Entries |
Document | Title | Date |
20080272790 | METHOD FOR DETERMINING STATE OF CHARGE OF LEAD-ACID BATTERIES OF VARIOUS SPECIFIC GRAVITIES - In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity. | 11-06-2008 |
20090153143 | SENSOR ARRAY FOR DETECTING THE STATE OF A BATTERY - A sensor array for detecting the state of a battery which is situated in the proximity of the pole terminals of the battery for detecting the electrical state variables of the battery. In addition to a measuring path, an electronic circuit is also integrated into the sensor array whose supply voltage is taken directly from the battery, the supply voltage being connected to the electronic circuit via a cutout in such a way that the cutout is integrally joined into the lead of the supply voltage in the housing of the sensor array. | 06-18-2009 |
20090289635 | BATTERY TESTER - A battery tester determines a remaining level of charge of a battery mounted within a separate electronic device having an audio jack. The battery tester includes a plug and a circuit having a high impedance input amplifier. At least one electrical contact of the plug is electrically coupled to an input of the high impedance input amplifier. The plug is removably insertable within the audio jack such that the battery of the separate electronic device is electrically connected to the input of the high impedance input amplifier. When electrically coupled to the battery, an output of the high impedance input amplifier provides a signal proportional to the remaining level of charge of the battery, whereby the remaining level of charge of the battery is obtainable by the battery tester without having to remove the battery from the electronic device. | 11-26-2009 |
20100007350 | OVER VOLTAGE TRANSIENT CONTROLLER - An over voltage transient controller to protect a rechargeable battery from an over voltage transient condition. The over voltage transient controller may comprise a comparator to compare a first signal with a second signal representative of a reference voltage level and to provide an output signal representative of an over voltage transient condition to a switch if the first signal is greater than or equal to the second signal. The switch is responsive to the output signal to protect the rechargeable battery from the over voltage transient condition. The over voltage transient controller may further comprise a DAC, wherein the second signal is based, at least in part, on an output of the DAC. An apparatus comprising a charge switch and such an over voltage transient controller is also provided. | 01-14-2010 |
20100039116 | STATE OF HEALTH RECOGNISTION OF SECONDARY BATTERIES - An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. The battery electrical double layer capacity data is calculated from the battery response voltage data, and thereafter utilized to determine the state of health of the battery. | 02-18-2010 |
20100045298 | METHOD AND APPARATUS FOR DETERMINING DETERIORATION OF SECONDARY BATTERY, AND POWER SUPPLY SYSTEM THEREWITH - A method for detecting SOC and SOH of a storage battery includes: calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value; further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value; outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOH value as an SOC output value; and storing the SOH output value into a memory. | 02-25-2010 |
20100052692 | CAR BATTERY SYSTEM - The car battery system of the present invention is provided with battery blocks | 03-04-2010 |
20100066377 | METHOD FOR DETERMINING THE BATTERY CAPACITY WITH THE AID OF CAPACITY-DEPENDENT PARAMETERS - A method for determining a battery variable, in particular capacity of battery, with the aid of a state variable and parameter estimator, which calculates from operating variables of battery state variables and parameters of a mathematical energy storage model. Capacity of battery may be determined very accurately when the battery is in operation if it is calculated as a function of at least one capacity-dependent parameter. | 03-18-2010 |
20100073005 | CAR BATTERY SYSTEM - The car battery system of the present invention is provided with a battery block | 03-25-2010 |
20100085057 | DEVICE ESTIMATING A STATE OF A SECONDARY BATTERY - A diffusion estimation unit follows a diffusion equation in an active material that is represented by a polar coordinate to estimate a distribution in concentration of lithium in the active material. An open circuit voltage estimation unit obtains an open circuit voltage in accordance with a local SOC(θ) based on a concentration of lithium obtained at an interface of the active material as estimated by the diffusion estimation unit. A current estimation unit uses a battery's voltage measured by a voltage sensor, the estimated open circuit voltage, and a parameter value that is set for the battery by a battery parameter value setting unit, and follows a voltage-current relationship model expression simplified from an electrochemical reaction expression to estimate the battery's current density. A boundary condition setting unit sequentially sets a boundary condition for the diffusion equation of the diffusion estimation unit for the active material's interface, as based on the battery's estimated current density. Thus a battery model that allows an internal state to be estimated based on an electrochemical reaction dynamically and can also achieve an alleviated operating load can be used to estimate a state of a secondary battery. | 04-08-2010 |
20100117657 | Method For Determining Battery Capacity - An electrical device is powered by a battery. The device includes transition phase determining circuitry operatively connected to the battery to determine that the battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery. Battery capacity determining circuitry is operatively connected to the transition phase determining circuitry and configured to determine, in response the transition phase determining circuitry determining that the battery is in the transition phase, a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. The transition phase determining circuitry is further configured to determine an end of the transition phase based on the transition phase battery capacity model and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for a given measured voltage of the battery. | 05-13-2010 |
20100171502 | BATTERY STATE MONITORING CIRCUITRY WITH LOW POWER CONSUMPTION DURING A STAND-BY-STATE OF A BATTERY PACK - A battery pack including at least one battery cell, a switch, and battery state monitoring circuitry. The battery state monitoring circuitry may be configured to control an ON resistance of the switch to a first ON resistance when the switch is ON and the battery pack is in a stand-by-state and to control the ON resistance to a second ON resistance when the switch is ON and said battery pack is not in said stand-by-state, the first ON resistance greater than the second ON resistance. A cordless electrical device and method consistent with embodiments are also provided. | 07-08-2010 |
20100188092 | Voltage-detection component and a substrate having the same - A substrate includes a plurality of voltage-detection components, each of which includes (a) an upper connecting terminal that protrudes from one of a pair of first sides opposite each other of a body of a voltage-detection component and is connected to an adjacent voltage-detection component of an adjacent higher-ordered battery block of the battery pack, and (b) a lower connecting terminal that protrudes from the other of the pair of the first sides of the body and is connected to an adjacent voltage-detection component of an adjacent lower-ordered battery block of the battery pack. The plurality of voltage-detection components are aligned on the substrate in a direction substantially orthogonal to the pair of the first sides of the body of the component. | 07-29-2010 |
20100188093 | CELL VOLTAGE DETECTING SYSTEM AND DRIVE VOLTAGE MAINTAINING METHOD - In a cell voltage detecting system detecting cell voltages of a fuel cell connected in series, a voltage detector detects cell voltages. An auxiliary power supply generates a voltage equal to or greater than a minimum voltage for driving the voltage detector at positive and negative terminals thereof. First and second diodes are connected to a positive drive terminal of the voltage detector to supply the power to the drive terminal of the voltage detector from a high voltage side between the fuel cell or the auxiliary power supply. A negative terminal of the fuel cell, the negative drive terminal, and the negative terminal of the auxiliary power supply are connected to have a same potential. A method of maintaining a drive voltage for the voltage detector is also disclosed in which the drive voltage for the voltage detector is supplied from the high voltage side. | 07-29-2010 |
20100194397 | MEASURING SYSTEM - There is provided a measuring system capable of rendering a power source voltage of an internal circuit higher than a drivable voltage of the internal circuit by removing or reducing a chloride film with greater certainty, thereby enabling operation, and initial activation of the internal circuit to be normally executed, or preventing the internal circuit from running away. The measuring system comprises a thionyl chloride based primary cell, a cell voltage measurement unit, and an internal circuit provided with state-transition controller wherein in the case of transition of the internal circuit to a state thereof, having a discharge current larger than the discharge current in the present state thereof, the transition is made according to results of comparison of a voltage measured by the cell voltage measurement unit with a threshold on the basis of a discharge current in a state before, or after the transition of the internal circuit. | 08-05-2010 |
20100201368 | Method And Arrangement For Determining A Power Supply State Variable In An Active Medical Implant - The invention relates to a method and arrangement for determining a power supply state variable, particularly of the maintenance state of a battery or rechargeable battery, in an active medical implant, wherein the power supply is subjected to a predetermined load, and the output voltage thereof is detected multiple times during at least one time segment of the load phase, and the measurement values are subjected to a comparison to a respective comparison value, or the chronological curve of the voltage obtained from the measurement values is subjected to a comparison to at least one comparison curve, wherein the comparison result is considered characteristic for the state variable. | 08-12-2010 |
20100213946 | METHOD OF ESTIMATION OF THE STATE OF CHARGE OF A LEAD-ACID BATTERY - The method of estimation of the state of charge of a lead acid battery comprises measuring the open circuit voltage difference between an integrated liquid junction reference electrode and a negative battery terminal during at least one cut-off period. It further comprises determination of the sign of the current though the battery prior to cut-off and estimation of the state of charge on the basis of the open circuit voltage difference and, according to the sign of the current, respectively of a charge or a discharge calibration curve, previously determined during a calibration procedure. The cut-off period has preferably a duration of at least 5 minutes. | 08-26-2010 |
20100225326 | DEVICE FOR MEASURING BATTERY VOLTAGE - A device is used for measuring an output voltage of a battery. The device includes a detecting circuit, an encoding circuit, a control circuit, and a processing circuit. The detecting circuit is configured for detecting the output voltage of the battery and generating a first signal, a second signal, and a third signal accordingly. The encoding circuit is configured for generating a first code and a second code according to the first signal and the second signal. The control unit is configured for modifying the second code when the third signal indicates that the output voltage is lower than a predetermined value. The processing unit is configured for generating and outputting display control signals according to the first and second codes. The display control signals are used to control a display panel to display information of the output voltage of the battery. | 09-09-2010 |
20100244845 | CURRENT INTEGRATING CIRCUIT DEVICE AND SECONDARY BATTERY PACKAGE USING THE SAME - A current integrating circuit device, including a current sensor to detect a current flowing through a current path, a first-order lag filter to filter an output of the current sensor, an A/D converter to convert an analog signal filtered by the first-order lag filter into a digital signal, and a proportional integrator to proportionally integrate the digital signal outputted from the A/D converter. | 09-30-2010 |
20100244846 | METHOD FOR DETERMINING THE STATE OF HEALTH OF A BATTERY - A method for determining the state of health (SOH) of a battery is provided in which cell impedance is determined continuously, and including determining one or more confidence coefficients that depend on one or several variables selected from cell current, temperature or state of charge or their derivatives or integrals with respect to time, and continuously determining the state of health of the battery at a given point in time, using the state of health of the battery at a preceding point in time corrected as a function of cell impedance determined at the given point in time and weighted by the confidence coefficient or coefficients. The method provides a reliable way of determining the state of health of the battery with greater stability and robustness than existing methods. | 09-30-2010 |
20100253357 | Battery System, Electric Vehicle, And Battery Control Apparatus - A battery system has: a voltage detection apparatus including a voltage detection portion which includes an AD converter which converts an analog voltage signal having a measurement target analog voltage into a digital voltage signal to output the digital voltage signal, a voltage level discrimination portion which is connected to a voltage detection line across which the analog voltage signal is delivered, and which discriminates the voltage level of the measurement target analog voltage to output a discrimination result, and a fault detection portion which detects, based on the output of the AD converter and the output of the voltage level discrimination portion, a fault in the voltage detection portion in a state in which the voltage value of the digital voltage signal is within a predetermined voltage range; a battery as a voltage source of the measurement target analog voltage; and a control portion which, when the fault detection portion detects the fault, limits the discharging of the battery, or limits the charging of the battery, or limits the discharging and charging of the battery. | 10-07-2010 |
20100271034 | Power system having a battery unit that calculates cumulative work volume value - A camera includes: a battery unit on which a battery is mounted, that can be detachably loaded into the camera and supplies power to the camera; and a function unit that executes camera functions, wherein: as a function of the camera is executed, the function unit transmits information related to the executed function to the battery pack; and the battery unit has a storage unit in which the information related to the camera function is stored. | 10-28-2010 |
20100283471 | Method for Measuring SOC of a Battery Management System and the Apparatus Thereof - This invention is related to a method and an apparatus for choosing SOCi (State Of Charge based on current) or SOCv (State Of Charge based on voltage) as the SOC (State Of Charge) of a battery depending on a condition in a battery management system by using an equivalent circuit model. In this invention, a method for measuring SOC of a battery in a battery management system is characterized by comprising the steps of: obtaining voltage data and temperature by measuring the current, voltage and temperature of a battery; calculating SOCi by accumulating the current data; calculating open circuit voltage by using an equivalent circuit model which simply presents the current data, the voltage data and the battery through an electric circuit; calculating SOCv by using the temperature data and the open circuit voltage; and choosing at least one of the SOCi and the SOCv as SOC of the battery by using the SOCi and the SOCv based on the judgment on the current state of a vehicle for a certain time interval. | 11-11-2010 |
20100301867 | REGENERATION CAPACITY CONTROL METHOD FOR A BATTERY - A method for controlling regeneration of a battery includes determining a scaled value for a state of charge of the battery, a scaled value for a battery temperature and a scaled value for a maximum charging power of the battery. An actual battery temperature is then compared with a predetermined operating temperature. When the actual battery temperature is less than the predetermined operating temperature, an actual regeneration amount is calculated based upon the scaled value for the state of charge of the battery and the scaled value for the battery temperature. When the actual battery temperature is greater than the predetermined operating temperature, the actual regeneration amount is based upon the scaled value for the state of charge of the battery, the scaled value for the battery temperature, and the scaled value for the maximum charging power of the battery. | 12-02-2010 |
20100321025 | Method for use With A Vehicle Battery Pack Having A Number of Individual Battery Cells - A system and method for use with a vehicle battery pack having a number of individual battery cells, such as a lithium-ion battery commonly used in hybrid electric vehicles. In one embodiment, the method evaluates individual battery cells within a vehicle battery pack in order to obtain accurate estimates regarding their average transient voltage effect, open circuit voltage (OCV | 12-23-2010 |
20110012604 | SECONDARY BATTERY SYSTEM - Provided is a secondary battery system which can accurately detect a state of a secondary battery system (such as a secondary battery state and a secondary battery system failure). The secondary battery system ( | 01-20-2011 |
20110037475 | Battery Capacity Estimation by DCIR - A method of battery capacity measurement is actualized by battery internal resistance. This method establishes a controlled discharge path inside the battery module. The battery discharge current is a constant value despite of the variation of system loading current. The internal resistance measured by establishing this constant battery current can be used to obtain the battery capacity precisely. | 02-17-2011 |
20110043212 | METHOD OF ESTIMATION OF THE STATE OF CHARGE OF A BATTERY - The method includes the simultaneous measurement of the current I, of the positive plate potential V | 02-24-2011 |
20110089953 | SENSOR ARRANGEMENT AND METHOD OF USING THE SAME - A sensor arrangement and method that may be used with a variety of different energy storage devices, including battery packs found in hybrid vehicles, battery electric vehicles, and other types of vehicles. An exemplary sensor arrangement includes a number of sensor units, a controller, and several connections, wherein two or more sensor units are coupled to each node of the battery pack and are coupled to the controller over different connections. An exemplary method is divided into two aspects: an error detection aspect and an error resolution aspect. Because the sensor arrangement provides multiple sensor readings for each node being evaluated, the method can enable the sensor arrangement to continue operating accurately and with redundancy even if it experiences a loss of one or more sensor units. | 04-21-2011 |
20110128007 | PORTABLE DEVICE FOR DISPLAYING CHARGE INFORMATION AND CHARGE INFORMATION DISPLAY SYSTEM - A portable device for displaying charge information has a transmission unit for wirelessly transmitting a signal, requesting charge information on a battery, to a controller provided with a unit for detecting a remaining amount of a battery, a reception unit for wirelessly receiving the charge information from the controller, a storage unit for storing charge information received by the reception unit, a display unit for displaying charge information stored into the storage unit, and a charge prediction information calculating unit for calculating prediction information regarding a state-of-charge of the battery based upon charge information stored in the storage unit in the case of the reception unit being unable to receive charge information from the controller after transmitting a signal requesting charge information from the transmission unit. The prediction information calculated by the charge prediction information calculating unit is displayed in the display unit. | 06-02-2011 |
20110148424 | APPARATUS FOR ESTIMATING BATTERY STATE OF HEALTH - An apparatus for estimating state-of-health (SOH) of a battery is disclosed, which comprises: a measurement unit, for measuring a working current, a working voltage and a working temperature of the battery; an observer unit, for observing voltages at an output end and RC parallel circuits of the battery; an adaptive algorithm unit, for updating parameters of the battery; an internal voltage estimation unit, for estimating the internal voltages of the RC parallel circuits; an open-circuit voltage (OCV) estimation unit, for estimating static open-circuit voltage of the battery; a SOH estimation unit, for estimating an SOH of the battery; and a state-of-charge (SOC) estimation unit, for estimating a SOC of the battery. | 06-23-2011 |
20110187378 | STATE OF CHARGE DETERMINATION FOR AN ELECTRICAL ACCUMULATOR - In a method for determining the state of charge of an electrical accumulator, individual cell voltages are recorded, and the highest and/or the lowest individual cell voltage is ascertained. A present maximum charge and/or a present minimum charge of the appertaining accumulator cell is determined using a characteristic curve and the highest and/or the lowest individual cell voltage. | 08-04-2011 |
20110210746 | POWER SUPPLY DEVICE AND METHOD FOR DETECTING NON-CONTACT STATE OF LOAD CONNECTED TO POWER SUPPLY DEVICE - A power supply device includes a battery | 09-01-2011 |
20110241693 | BATTERY PACK, SEMICONDUCTOR INTEGRATED CIRCUIT, REMAINING CAPACITY CORRECTION METHOD, AND STORAGE MEDIUM - A battery pack includes a voltage detection part configured to detect the voltage of a battery unit including multiple chargeable and dischargeable secondary cells; a current detection part configured to detect a current flowing through the battery unit; a dischargeable capacity calculation part configured to calculate the dischargeable capacity of the battery unit based on the current detected by the current detection part; and a capacity correction part configured to correct the remaining capacity of the battery unit, the remaining capacity including the dischargeable capacity calculated by the dischargeable capacity calculation part, wherein the capacity correction part is configured to correct the remaining capacity based on an estimated dischargeable capacity calculated from the relationship between a preset predetermined voltage and the drop rate of the voltage of the battery unit, in response to the voltage of the battery unit becoming less than or equal to a predetermined threshold. | 10-06-2011 |
20110254559 | BATTERY ABNORMALITY DETECTION CIRCUIT AND POWER SUPPLY DEVICE - A battery abnormality detection circuit includes: a SOC detection unit that detects a SOC of a secondary battery; an internal resistance detection unit that detects an internal resistance value of the secondary battery; a first state acquisition unit that acquires a first SOC and a first resistance value at a predetermined first timing; a second state acquisition unit that acquires a second SOC and a second resistance value at a second timing a storage unit that stores in advance relationship information indicating a correspondence relationship between a SOC and an internal resistance value of the secondary battery; a reference variation value setting unit that sets a reference variation value indicating an amount of variation from an internal resistance value corresponding to the first SOC to an internal resistance value corresponding to the second SOC on the basis of the relationship information stored in the storage unit; and a determination unit that determines that an abnormality has occurred in the secondary battery when an amount of variation from the first resistance value to the second resistance value is different from an amount of variation indicated by the reference variation value that has been set by the reference variation value setting unit. | 10-20-2011 |
20110254560 | Electrical Systems and Battery Assemblies - Electrical systems, power supply apparatuses, and power supply operational methods are described. According to one aspect, an electrical system includes an electrical entity configured to utilize electrical energy, and wherein the electrical entity comprises a communications interface, and a power supply apparatus configured to provide the electrical energy for use by the electrical entity, and wherein the power supply apparatus comprises a support system, a plurality of battery assemblies configured to be removably coupled with and supported by the support system, wherein individual ones of the battery assemblies comprise at least one rechargeable electrochemical device configured to provide the electrical energy, at least one power terminal configured to couple with the electrical entity and to provide the electrical energy from the electrochemical device to the electrical entity, and a communications interface configured to implement communications with the communications interface of the electrical entity, and wherein the electrical entity and the power supply apparatus are configured to implement the communications comprising at least one of status information regarding the power supply apparatus from the power supply apparatus to the electrical entity and a command regarding an operation of the power supply apparatus from the electrical entity to the power supply apparatus. | 10-20-2011 |
20110267068 | ENERGY STORAGE LEVEL INDICATION CIRCUIT - An energy storage level indication circuit includes an energy storage device and a radio control module operable to transmit a wireless heartbeat signal at a rate indicating an amount of energy stored in the energy storage device. | 11-03-2011 |
20110267069 | METHOD FOR DETERMINING BATTERY CAPACITY - An electrical device is powered by a battery. The device includes transition phase determining circuitry operatively connected to the battery to determine that the battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery. Battery capacity determining circuitry is operatively connected to the transition phase determining circuitry and configured to determine, in response the transition phase determining circuitry determining that the battery is in the transition phase, a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. The transition phase determining circuitry is further configured to determine an end of the transition phase based on the transition phase battery capacity model and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for a given measured voltage of the battery. | 11-03-2011 |
20110273180 | BATTERY TESTING METHOD - The present invention allows batteries to be tested in conjunction with being re-charged, and identifies failed or failing batteries before they are put to further use. The present invention can simultaneously test and charge multiple batteries, and can simultaneously test and charge different types of batteries. A method according to various aspects of the present invention comprises: identifying, by a computer system comprising a user interface, a provided battery to be tested; receiving, through the user interface, a selection one or more tests to perform on the battery; and performing, using a battery testing system, the one or more tests on the battery. In this method, the battery testing system is in communication with the computer system, and the battery testing system comprises a battery interface for coupling with the battery. | 11-10-2011 |
20110279123 | Ambulatory Infusion Device With Variable Energy Storage Testing And Method For Testing An Energy Storage - Included are embodiments of an ambulatory infusion device. Some embodiments include an energy storage for storing electrical energy utilized for powering the ambulatory infusion device. The energy storage may serve as a primary power source of the ambulatory infusion device. Also included is a dosing unit with an electrically powered actuator and an electronic controller, where the electronic controller controls operation of the electrically powered actuator. Some embodiments also include a testing unit for testing the energy storage. The testing unit may be configured to repeatedly carry out a test during operation of the ambulatory infusion device. Additionally, the test may include determining a control variable, the control variable being indicative of a capability of the energy storage for further powering the ambulatory infusion device. | 11-17-2011 |
20110309838 | ADAPTIVE BATTERY PARAMETER EXTRACTION AND SOC ESTIMATION FOR LITHIUM-ION BATTERY - A system and method for estimating internal parameters of a lithium-ion battery to provide a reliable battery state-of-charge estimate. The method uses a two RC-pair equivalent battery circuit model to estimate the battery parameters, including a battery open circuit voltage, an ohmic resistance, a double layer capacitance, a charge transfer resistance, a diffusion resistance and a diffusion capacitance. The method further uses the equivalent circuit model to provide a difference equation from which the battery parameters are adapted, and calculates the battery parameters from the difference equation. | 12-22-2011 |
20110316547 | DETERMINING THE STATE OF-CHARGE OF BATTERIES VIA SELECTIVE SAMPLING OF EXTRAPOLATED OPEN CIRCUIT VOLTAGE - A method for estimating the state-of-charge of a battery. The method includes collecting a plurality of voltage measurements during operation of the system containing the battery and determining a time-constant of relaxation and an open-circuit voltage corresponding to the battery based, at least in part, on the voltage measurements. The method further includes estimating the state-of-charge of the battery based, at least in part, on the open-circuit voltage. | 12-29-2011 |
20110316548 | Method and Circuitry to Calculate the State of Charge of a Battery/Cell - The present inventions, in one aspect, are directed to techniques and/or circuitry to determine the state of charge of a battery/cell using data which is representative of a partial relaxation time of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to determine the state of charge of a battery/cell using data which is representative of an overpotential or full relaxation time of the battery/cell. In yet another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of charge of the battery/cell. | 12-29-2011 |
20120081125 | Integrated MOSFET Current Sensing for Fuel-Gauging - Integrated MOSFET current sensing for fuel-gauging. A | 04-05-2012 |
20120105067 | VEHICLE BATTERY TESTING - A method of estimating a state of charge of a battery in a vehicle undergoing a vehicle assembly process. The method may include the steps of: installing the battery in the vehicle; employing a sensor mounted in the vehicle to automatically sense battery net amp hours during at least a portion of the vehicle assembly process; storing the net amp hours in a control module mounted in the vehicle; mounting a data link connector in the vehicle to provide communication with the controller; temporarily connecting a tool connector of a battery test assembly to the data link connector and transmitting the stored net amp hours data to the battery test tool from the control module; and comparing the net amp hours to a predetermined maximum net amp hours to estimate if the state of charge of the battery is acceptable. | 05-03-2012 |
20120105068 | METHOD AND APPARATUS FOR ASSESSING BATTERY STATE OF HEALTH - A method for monitoring a lithium-ion battery cell includes monitoring a battery cell voltage and a corresponding state of charge of the battery cell during an electric power event which may include either an electric power charge event or an electric power discharge event. A measured potential-derivative is determined by differentiating the battery cell voltage in relation to the corresponding state of charge of the battery during the electric power event. The measured potential-derivative is compared with a preferred anode potential-derivative of an anode charge curve (for electric power discharge events) or an anode discharge curve (for electric power charge events), and with a preferred cathode potential-derivative of a cathode charge curve (for electric power charge events) or a cathode discharge charge curve (for electric power discharge events). A first state of health parameter of the battery cell corresponding to the comparison of the measured potential-derivative with the preferred anode potential-derivative of the anode curve is determined. And, a second state of health parameter of the battery cell corresponding to the comparison of the measured potential-derivative with the preferred cathode potential-derivative of the cathode curve is determined. | 05-03-2012 |
20120105069 | METHOD AND APPARATUS FOR ASSESSING BATTERY STATE OF HEALTH - A method for monitoring a lithium-ion battery cell includes monitoring a battery cell voltage and a corresponding charge capacity of the battery cell during an electric power event which may include either an electric power charge event or an electric power discharge event. A measured charge-capacity-derivative is determined by differentiating the charge capacity in relation to the corresponding battery cell voltage during the electric power event. The measured charge-capacity-derivative is compared with a preferred anode charge-capacity-derivative of an anode charge curve (for electric power discharge events) or an anode discharge curve (for electric power charge events), and with a preferred cathode charge-capacity-derivative of a cathode charge curve (for electric power charge events) or a cathode discharge charge curve (for electric power discharge events). A first state of health parameter of the battery cell corresponding to the comparison of the measured charge-capacity-derivative with the preferred anode charge-capacity-derivative of the anode curve is determined. And, a second state of health parameter of the battery cell corresponding to the comparison of the measured charge-capacity-derivative with the preferred cathode charge-capacity-derivative of the cathode curve is determined. | 05-03-2012 |
20120126819 | DETECTING DEVICE AND METHOD FOR DETECTING BATTERY STORAGE CAPACITY - A detecting device used to detect storage capacity of a battery is connected to a load by a first output terminal and a second output terminal. The detecting device includes a switch unit, a detecting unit, and a control unit. The switch unit is connected between the first and second output terminals. The detecting unit is connected to the first and second output terminals. The detecting unit detects output voltage and current of the battery when the switch is turned on and off and obtains an internal resistance of the battery according to the detected output voltage and current. The control unit controls the switch unit to turn on and off and compares the detected resistance with a reference resistance, and determines the storage capacity of the battery according to the comparison. | 05-24-2012 |
20120133369 | ALGORITHM FOR DETERMINING THE CAPACITY OF A BATTERY WHILE IN SERVICE - A method for estimating the capacity of a vehicle battery while in service. The method includes providing a previous battery state-of-charge, battery temperature and integrated battery current amp-hours, and determining that battery contactors have been closed after they have been opened and disconnected from a load. The method determines if the battery has been at rest for a long enough period of time while the contactors were open, where the battery rest time is based on battery temperature, and determines an initial battery voltage from a last time step when the battery contactors were closed prior to the contactors being open during the battery rest time. The method determines a present battery state-of-charge from the initial battery voltage and the battery temperature and calculates the battery capacity based on the battery integrated current amp-hours divided by the difference between the present battery state-of-charge and the previous battery state-of-charge. | 05-31-2012 |
20120139546 | State Based Full and Empty Control for Rechargeable Batteries - State based full and empty control for rechargeable batteries that will assure a uniform battery empty condition, even in the presence of a load on the battery. A fuel gauge provides a prediction of the open circuit voltage of the battery, and when the predicted open circuit voltage of the battery reaches the predetermined open circuit voltage of an empty battery, the load is terminated, after which the battery will relax back to the predetermined open circuit voltage of an empty battery. A similar technique is disclosed for battery charging, allowing faster battery charging without overcharging. Preferably an RC battery model is used as the fuel gauge to provide the prediction, but as an alternative, a coulomb counter may be used to provide the prediction, with error correction between successive charge discharge cycles. | 06-07-2012 |
20120200298 | Automotive Battery SOC Estimation Based on Voltage Decay - A method is provided for determining a state-of-charge of a battery for a vehicle. The vehicle is in a charging state when the engine is operating and a non-charging state when the engine is not operating. A first battery voltage is measured at a first predetermined time period after battery charging is discontinued in the non-charging state. A first temperature of the battery is measured that coincides with the first battery voltage. A second battery voltage is measured at a second predetermined time. The second predetermined time is greater than the first predetermined time. A second temperature of the battery is measured that coincides with the second battery voltage. An average temperature is calculated based on the first temperature measurement and the second temperature measurement. A fixed time constant is determined based on the average temperature. An open circuit voltage is estimated as a function of the first voltage measurement, the second voltage measurement, and the fixed time constant. A state-of-charge of the battery is determined based on the estimated open circuit voltage. | 08-09-2012 |
20120217972 | METHOD FOR SETTING THE PERIOD FOR MEASURING VOLTAGE LEVEL OF A BATTERY IN A MOBILE DEVICE AND MOBILE DEVICE ADAPTED THERETO - A method and apparatus for setting a period for measuring voltage level of a battery are provided. The method includes determining whether the period for measuring the battery voltage level has elapsed, measuring battery voltage level when the period for measuring voltage level has elapsed, extracting and displaying a remaining battery capacity based on the measured battery voltage level, and setting the period for measuring battery voltage level based on the measured battery voltage level. | 08-30-2012 |
20120274332 | ALGORITHM FOR IN-SITU QUANTIFICATION OF PEMFC MEMBRANE HEALTH OVER ITS LIFE - A method for determining the health of the membranes in a fuel cell stack. The total parasitic current of the fuel cells in the stack is determined. From the total parasitic current, the shorting resistance and the cross-over parasitic current are determined. The health of the membranes is then determined from the cross-over parasitic current and the shorting resistance. | 11-01-2012 |
20120319694 | Circuit System and Method of Controlling Power Management - A circuit system is disclosed. The system comprises a master circuitry, at least one slave circuitry which has a battery sensor for checking battery status of a power supply battery and a shut down mechanism for controlled shut down upon detection of low battery by the battery sensor, and a battery sensor manipulation circuit controlled by the master circuitry. The battery sensor manipulation circuit is arranged to manipulate sensed battery status for the battery sensor of at least one of the at least one slave circuitry to force the controlled shut down of the at least one of the at least one slave circuitry upon provision of a shut down control signal from the master circuitry. A method of controlling power management of such a circuit system is also disclosed. | 12-20-2012 |
20120319695 | CAR BATTERY SYSTEM - The car battery system of the present invention is provided with a battery block | 12-20-2012 |
20130021037 | WIRELESS PORTABLE BATTERY CAPACITY TEST SYSTEM - A battery capacity test system includes one or more wireless battery capacity test (“BCT”) sense modules, a continuous load unit, and a wireless data collection unit. The wireless data collection unit interfaces with a computer. During a battery capacity test, the wireless BCT sense module (or modules) continuously monitors the voltage of the battery cell (or cells) to which it is connected. In an aspect, it also continuously monitors the temperature of the battery cell (or cells) and intercell voltage (or voltages) across an intercell connector (or connectors). Each wireless BCT sense module wirelessly transmits the voltage and temperature data it collects to the wireless data collection unit. | 01-24-2013 |
20130027048 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE BATTERY - A method and system for manipulating, adjusting or otherwise controlling a state-of-charge (SOC) operating range for a high voltage vehicle battery, such as the type used for hybrid or electric vehicle propulsion. By providing a dynamic SOC operating range that changes in response to changing battery conditions, the battery performance may be improved so that the battery life is extended. Depending on the particular embodiment, the dynamic SOC operating range may have different combinations of hard and/or soft boundaries or limits. | 01-31-2013 |
20130057290 | BATTERY PACK AND METHOD OF CONTROLLING THE SAME - A battery pack and a method of controlling the battery pack are disclosed. In one embodiment, the battery pack includes a battery, a monitoring unit configured to monitor a voltage of the battery and provide a monitoring result, a memory storing a full-charge capacity (FCC) of the battery, and a controller configured to update the stored FCC when the monitoring result satisfies predetermined conditions during a falling period of the voltage. | 03-07-2013 |
20130057291 | DEVICE AND METHOD FOR CALCULATING VALUE OF RECHARGEABLE BATTERY - A rechargeable battery is used with a plurality of battery cells restrained by a restraint member. After the rechargeable battery has the restraint member removed therefrom and is thus disassembled when the rechargeable battery is subsequently re-restrained by the restraint member and thus reused an internal resistance measurement unit measures the rechargeable battery's internal resistance based on battery data detected after the rechargeable battery is re-restrained. At least for the internal voltage, from a value thereof as measured after the battery is re-restrained an evaluation unit evaluates a value of the rechargeable battery that is reused. | 03-07-2013 |
20130076363 | SYSTEM AND METHOD FOR DETERMINING DEGRADATION OF RECHARGEABLE LITHIUM ION BATTERY - An MPU performs a degradation diagnosis based on an open circuit voltage characteristic of a rechargeable lithium ion battery indicating how the battery varies in open circuit voltage as the battery varies in capacity to obtain a capacity ratio of a positive electrode, a capacity ratio of a negative electrode, and a deviated capacity of the battery. The MPU applies the capacity ratio of the positive electrode and the capacity ratio of the negative electrode to a predetermined map for degradation attributed to wear to estimate a deviated capacity resulting from degradation attributed to wear and separates the deviated capacity into the deviated capacity resulting from degradation attributed to wear and a deviated capacity resulting from deposition of lithium. The MPU uses at least the deviated capacity resulting from deposition of lithium to determine whether a rechargeable lithium ion battery subject to determination of degradation is reusable and/or recyclable. | 03-28-2013 |
20130099794 | DEGRADATION DETERMINATION DEVICE AND DEGRADATION DETERMINATION METHOD FOR LITHIUM ION SECONDARY BATTERY - A degradation determination device includes: a measuring unit measuring an open-circuit voltage characteristic indicating an open-circuit voltage variation with respect to a lithium ion secondary battery capacity variation; and a determining unit determining a degradation state due to wear and precipitation of lithium using a parameter for identifying the open-circuit voltage characteristic that substantially coincides with the measured open-circuit voltage characteristic. The parameter includes single electrode capacity retention rates expressed by the expressions (I) positive electrode capacity retention rate=degraded positive electrode capacity/initial positive electrode capacity and (II) negative electrode capacity retention rate=degraded negative electrode capacity/initial negative electrode capacity, and a battery capacity variation expressed by the expression (III) battery capacity variation=degraded negative electrode capacity×shift of a negative electrode composition axis with respect to a positive electrode composition axis. | 04-25-2013 |
20130119998 | APPARATUS AND METHOD FOR DETERMINING BATTERY CURRENT CONSUMPTION IN A PORTABLE TERMINAL - According to one embodiment, an apparatus for selecting a battery voltage table including current consumption information of applications, and applying an offset to a battery output voltage according to current consumption of applications. The apparatus for determining a battery status in a portable terminal includes a memory unit configured to store a battery voltage table defined according to current consumption, a control unit configured to determine an executed application, and a power estimation unit configured to estimate a battery level using the battery voltage table defined for each current consumption of applications and a battery output voltage. | 05-16-2013 |
20130162258 | METHOD FOR DETERMINING A STATE VARIABLE OF AN ELECTROCHEMICAL CELL USING COMPLEX IMPEDANCE AT RADIOELECTRIC FREQUENCIES - A method is provided for determining a state variable such as aging of an electrochemical cell comprising an electrode plate group, that includes analyzing at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of the state variable. | 06-27-2013 |
20130187657 | DISCHARGE CURVE CALIBRATION SYSTEM AND CALIBRATION METHOD FOR INITIAL DISCHARGING CURVE OF BATTERY - An embodiment of the invention provides a calibration method for an initial discharging curve of a battery. The method includes: acquiring an initial discharging curve of a battery; measuring a first open circuit voltage at a first time point and a second open circuit voltage at a second time point; according to the initial discharging curve, acquiring a first discharge capacity corresponding to the first open circuit voltage and a second discharge capacity corresponding to the second open circuit voltage according to the initial discharging curve; calculating an ideal discharge capacity according to the first discharge capacity and the second discharge capacity; measuring an real discharge capacity between the first time point and the second time point; determining a total discharge capacity difference according to the ideal discharge capacity and the real discharge capacity to calibrate the initial discharging curve to generate a current discharging curve. | 07-25-2013 |
20130193976 | LABEL WITH ON-BATTERY VOLTAGE INDICATOR - The present invention is a shrink label with a die cut voltage indicator device integrated therewith. | 08-01-2013 |
20130320989 | BATTERY STATE ESTIMATION METHOD AND BATTERY CONTROL SYSTEM - A battery states estimation method includes the steps of: measuring an electric current value of a battery B at an electric current value detection section and a terminal voltage value of the battery B at voltage detection section at a time of charge/discharge of the battery; and calculating at least one of such states of the battery as a state of charge (SOC), a state of health (SOH) and a full charge capacity based on the electric current value and the terminal voltage value as measured. When a change in the measured electric current value per second is at a predetermined value or higher, at least one of the SOC, the SOH and the full charge capacity of the battery is calculated based on the electric current values and the terminal voltage values measured during a battery charge/discharge period other than the lapsed period. | 12-05-2013 |
20140028321 | OPEN CIRCUIT VOLTAGE CHECKING FOR A BATTERY SYSTEM - Systems and methods for managing open circuit voltage checks of energy storage modules in an energy storage system. Embodiments of the present invention provide a controller of an energy storage system configured to schedule open circuit voltage checks for the energy storage modules, determine if conditions of an energy storage module, and of the overall energy storage system, are favorable for performing an open circuit voltage check, and defer an open circuit voltage check if at least one condition is not favorable. The controller is further configured to abandon an open circuit voltage check in progress if one or more conditions of the overall energy storage system changes in a manner that is unfavorable for continuing with the open circuit voltage check. | 01-30-2014 |
20140103933 | METHOD AND SYSTEM FOR ESTIMATING BATTERY CAPACITY IN A VEHICLE - A system and method is provided for estimating the capacity of a battery element in a vehicle, such as a hybrid electric vehicle. In one embodiment, the method determines if one or more threshold conditions have been met (e.g., conditions pertaining to battery temperature or battery state-of-charge (SOC)) and calculates the internal resistance of the battery element. When the threshold conditions have been met, the method uses the calculated internal resistance to estimate the capacity of the battery element. A corresponding battery system is also provided that includes a battery element, one or more battery sensors, and a control module configured to perform the method described above. | 04-17-2014 |
20140103934 | BATTERY DIAGNOSIS DEVICE AND METHOD - An apparatus is disclosed that includes a resistance measuring unit operable to determine a solution resistance Rsol and a charge transfer resistance Rct of a battery; and at least one computer-readable non-transitory storage medium comprising code, that, when executed by at least one processor, is operable to provide an estimate of the present value of the battery by: comparing Rsol and Rct to historical deterioration transition information; estimating the number of remaining charge cycles before a discharge capacity lower limit is reached by the battery using the comparison; and estimating the number of remaining charge cycles before a discharge time lower limit is reached by the battery using the comparison. The estimate of the present value of the battery includes the smaller of the number of remaining charge cycles before a discharge capacity lower limit is reached or the number of remaining charge cycles before a discharge time lower limit is reached. | 04-17-2014 |
20140184235 | CIRCUIT AND METHOD FOR DETERMINING INTERNAL SHORT-CIRCUIT, BATTERY PACK, AND PORTABLE DEVICE - An internal short-circuit determination circuit includes a current detecting unit, a voltage detecting unit, a short detecting unit, and first and second acquiring units. The first acquiring unit acquires first and second capacity values based on first and second voltage values. The second acquiring unit acquires a third capacity value based on a current flowing in a battery unit during a predetermined period. The short detecting unit computes a fourth capacity value by subtracting at least the second and third capacity values from the first capacity value. The short detecting unit determines whether an internal short-circuit has occurred in the battery unit based on the fourth capacity value. | 07-03-2014 |
20140218041 | METHOD AND APPARATUS FOR ESTIMATING MAXIMUM POWER OF BATTERY BY USING INTERNAL RESISTANCE OF THE BATTERY - Disclosed is a method for estimating the maximum power of a battery, which can inexpensively perform an estimation of the maximum power of a battery in a relatively simple manner of using the internal resistance of the battery, which has a correlation with and a largest effect on the maximum power of the battery. The method includes the steps of: measuring an internal resistance and a temperature of the battery and estimating a state of charge, if an estimation of the maximum power of the battery is requested; and reading a value of the maximum power of the battery, which corresponds to the measured temperature, the estimated state of charge, and the measured internal resistance, from a table in which the internal resistances and the maximum powers of the battery are mapped according to the temperatures and states of charge. | 08-07-2014 |
20140266226 | METHODS AND SYSTEMS FOR WARNING USERS OF A DEGRADED BACKUP CAPACITY IN BATTERY PLANTS - A method of warning a user when a reserve time of a battery plant in a system is substantially degraded is disclosed. The method includes determining a baseline capacity for the battery plant by estimating the reserve time of the battery plant while the battery plant is installed in the system, subsequently determining a present capacity of the battery plant by estimating the reserve time of the battery plant while the battery plant is installed in the system, comparing the present capacity with the baseline capacity, and generating a warning when the baseline capacity exceeds the present capacity by more than a defined amount. Example embodiments of systems and control circuits configured to perform the methods are also disclosed herein. | 09-18-2014 |
20140266227 | FRACTIONAL DEPLETION ESTIMATION FOR BATTERY CONDITION METRICS - Evaluation of a battery state comprises transforming a time based history of the load on the battery into a spectral representation of that history in a load domain, e.g., the current domain. The method also comprises comparing the spectral representation to an expected battery capability for the load represented by each line in the spectra and calculating the fraction of the expected capability used at each spectral line. The method still further comprises aggregating the calculated fractions into a total fraction that represents the estimated fraction of the expected battery capability associated with that particular time history. | 09-18-2014 |
20140300365 | DIAGNOSIS METHOD AND DIAGNOSIS APPARATUS FOR DETERMINING A CURRENT CAPACITY OF A BATTERY CELL IN A HANDHELD MACHINE TOOL - A method for determining the momentary capacity of a battery cell of a handheld power tool, including the following steps: measuring a first open-circuit voltage of the battery cell; determining the state of charge of the battery cell at the measured first open-circuit voltage as a function of a predetermined ratio of the open-circuit voltage to the state of charge of the battery cell; changing the charge stored in the battery cell in order to provide a changed state of charge; measuring a second open-circuit voltage at an actual value of the changed state of charge, and calculating the momentary capacity of the battery cell as a function of a nominal capacity of the battery cell, as a function of a target value of the changed state of charge, and as a function of the measured second open-circuit voltage. | 10-09-2014 |
20140312914 | System and Method for Measuring Battery Voltage - An apparatus and method for measuring battery voltage includes a first capacitor configured to receive a charge from a battery. A first switch may be configured to selectively couple the first capacitor to the battery. A second capacitor may be coupled to a reference potential. A second switch may be configured to selectively couple the second capacitor to the first capacitor to transfer at least a portion of the charge on the first capacitor to the second capacitor. | 10-23-2014 |
20140320143 | BATTERY MANAGEMENT SYSTEM AND METHOD FOR DETERMINING THE CHARGE STATE BATTERY CELLS, BATTERY AND MOTOR VEHICLE COMPRISING A BATTERY MANAGEMENT SYSTEM - A method for determining the charge state of battery cells or battery modules of a battery includes monitoring several battery cells or at least one battery module using a plurality of cell monitoring units. The respective electric current of the battery cells or battery modules is measured by the cell monitoring units, the battery current is measured, and the measured current value is transmitted to the plurality of cell monitoring units. A charge state is calculated in each of the cell monitoring units for the respective monitored battery cells, or respectively, the at least one battery module. A battery management system is configured to carry out the method for determining the charge state of the battery cells or battery modules of the battery. A battery and a motor vehicle include the battery management. | 10-30-2014 |
20140368207 | POWER SUPPLY USAGE DETERMINATION - The remaining capacity of a power source, such as a battery, may be monitored with a microprocessor, such as by counting electrons flowing through the power source. The microprocessor may measure electrons passing through the battery and sleep for predetermined periods, waking up to determine an updated capacity of the battery. The remaining capacity may be communicated to remote users through a network and displayed in an executive dashboard. In one example, the updates regarding remaining capacity may be pushed to users through a graphical user interface or a web page. | 12-18-2014 |
20150028879 | BATTERY MANAGEMENT SYSTEM, BATTERY, MOTOR VEHICLE HAVING A BATTERY MANAGEMENT SYSTEM, AND METHOD FOR MONITORING A BATTERY - A battery management system includes a control unit having a first micro controller arranged on the low-voltage side of the control unit, and a second micro controller arranged on the high-voltage side of the control unit. The system further includes a plurality of first voltage measuring units respectively assigned to a battery module of the battery, and a first communication connection for transmitting voltage values from the first voltage measuring units to the first micro controller. The system also has a plurality of second voltage measuring units and a second communication connection for transmitting voltage values from the second voltage measuring units to the second micro controller. The first or the second voltage measuring units are configured as min/max measuring units such that they detect a minimum and a maximum voltage value of the battery cells in the battery modules, and dismiss voltage measurement values in between. | 01-29-2015 |
20150048836 | BATTERY STATUS DETECTION AND STORAGE METHOD AND SYSTEM IN MEDICAL MONITORING - Described herein are systems and methods to determine when a new or fresh battery has been replaced in a medical monitoring device and store a record of such battery replacement so that the battery records of the medical monitoring device can be reliably kept over the life of the monitoring device. | 02-19-2015 |
20150048837 | METHOD OF MANAGING STATE OF CHARGE AND ELECTRONIC DEVICE THEREOF - A method of managing a State of Charge (SoC) of a battery and an electronic device therefor are provided. The method includes verifying the charging remaining capacity of a first battery which is installed in the electronic device and comparing the verified charging remaining capacity of the first battery with a charging level of a second battery, which is received from a charging device through a local-area communication method, the second battery being charged in the charging device and the charging level of the second battery is verified by the charging device. | 02-19-2015 |
20150077125 | SETTING DEVICE, BATTERY ASSEMBLY DEVICE AND SETTING METHOD - Provided are a setting device, a battery assembly device and a setting method that prevent SOC errors from accumulating. The setting device for determining the SOC of a target storage battery unit for setting among a plurality of storage battery units includes: a state setting means for setting the storage battery unit into one of two predetermined states, either a fully charged state or a fully discharged state; a plurality of first switches, corresponding to the plural storage battery units respectively, and that are each interposed between the corresponding storage battery unit and the state setting means; a plurality of second switches, corresponding to the plural storage battery units respectively, and that are each interposed between the corresponding storage battery unit and the power line; and, a control means that turns on the first switch, among the plural first switches, corresponding to the target storage battery unit to be set into a predetermined state, turns on the second switches among the plural second switches, other than the second switch, corresponding to the target storage battery unit to be set into a predetermined state, and determines the SOC of the target storage battery unit that is to be set to the value corresponding to the predetermined state when the state setting means sets the target storage battery unit that is to be set into the predetermined state. | 03-19-2015 |
20150102818 | METHOD AND DEVICE FOR DETERMINING A BATTERY STATUS OF A VEHICLE BATTERY IN A VEHICLE - A method and a device for determining a battery status of a vehicle battery in a vehicle. In this context, complete discharging (S | 04-16-2015 |
20150115970 | METHOD FOR DETERMINING AN OVERALL LOSS OF CAPACITANCE OF A SECONDARY CELL - A method for determining an overall loss of capacitance of a secondary cell, for example of an accumulator, which is brought about by ageing processes is provided. The overall loss of capacitance is determined additively from partial losses of capacitance which are determined by means of various parameters from various functions. A partial loss of capacitance is determined under constant peripheral conditions. If the peripheral conditions change, the partial losses of capacitance follow one another directly, i.e. with respect to the same loss of capacitance. The interval of the respective charge throughput rate is shifted here. The overall loss of capacitance of a secondary cell can be extended to the overall loss of capacitance of a package composed of a plurality of secondary cells. | 04-30-2015 |
20150123669 | BATTERY IDENTIFICATION SYSTEM AND METHOD FOR ELECTRONIC DEVICE, AND ELECTRONIC DEVICE - A battery identification system and method for an electronic device, and an electronic device are disclosed. A Hall sensor is set in the electronic device, and a magnetic induction component is set in a first-capacity battery, wherein, when the first-capacity battery is in an installation position, the magnetic induction component is in a sensing area of the Hall sensor; and when the first-capacity battery is installed in the electronic device, the Hall sensor senses approach of the magnetic induction component, and outputs a control signal used for identifying the first-capacity battery. With a Hall sensor switch and a magnetic component in the battery, batteries with different capacities used in the electronic device can be identified. | 05-07-2015 |
20150130471 | ELECTRIC VEHICLE BATTERY PACK VOLTAGE MONITORING - Total voltage output by a multi-cell battery pack in an electric vehicle is monitored. A main microcontroller having a chassis ground is digitally isolated from positive and negative busses of the battery pack. A battery monitoring IC having a plurality of auxiliary/thermistor A/D inputs measures respective voltages of the battery cells. A voltage divider is selectably coupled to the positive bus by an evaluation switch under control of the main microprocessor with an auxiliary output terminal of the IC. A divided voltage is coupled to one of the auxiliary/thermistor A/D inputs. The battery monitoring IC transmits a digital value representative of the divided voltage output to the main microprocessor via the serial data link, and the main microprocessor determines the main battery voltage in response to the digital value. | 05-14-2015 |
20150331057 | BATTERY REMAINING POWER PREDICTING DEVICE AND BATTERY PACK - A battery remaining power predicting device is provided which is equipped with a first voltage detection portion which detects the voltage of a battery, a second voltage detection portion which detects a voltage across a current sense resistor for detecting a load current, a controller which predicts the remaining power of the battery, based on the values of the voltages detected by the first and second voltage detection portions, and a constant current source which allows a constant current to flow through the current sense resistor. The controller is configured to calculate a resistance value of the current sense resistor, based on the detected voltage of the second voltage detection portion when the load current flows, and the detected voltage of the second voltage detection portion when the load current and the constant current flow. | 11-19-2015 |
20150338469 | METHOD FOR MANAGING BATTERY OF ELECTRONIC DEVICE AND ELECTRONIC DEVICE PERFORMING THE SAME - A method for displaying battery information of an electronic device is provided. The method includes obtaining an operating history about one or more operations performed by the electronic device; determining a power use ratio about each of the one or more operations, based on the operating history; and determining an available time period for which a battery supplying power to the electronic device is capable to supply power to the electronic device, based on the power use ratio and a remaining capacity of the battery. | 11-26-2015 |
20150369869 | METHOD AND DEVICE FOR ESTIMATING REMAINING CAPACITY OF BATTERY - A method and a device are provided for estimating a remaining capacity of a battery. Transient characteristics are generated that represent a correlation between the remaining capacity and a closed circuit voltage, the correlation transitioning from one of a charging-side and a discharging-side characteristic to the other when the charging/discharging of the battery has been switched, on the basis of map data of a charging-side characteristic that is only conducted from a fully-discharged to a fully-charged state and a discharging-side characteristic that is only conducted from the fully-charged to the fully-discharged state, the characteristics representing a correlation between the remaining capacity and the Closed Circuit Voltage of the battery. When charging and discharging of the battery have been switched, the remaining capacity of the battery is estimated from the Closed Circuit Voltage of the battery by using the transient characteristics until polarization of the battery enters a saturated state. | 12-24-2015 |
20160003911 | BATTERY CELL CHARACTERISTIC IDENTIFICATION - Devices, systems, and methods for battery monitoring are disclosed. An example method performs a first measurement on a battery cell installed in a location to determine a first charging capacity and determines a set of values for a permitted charging capacity trace region based on the first charging capacity and a number of charge/discharge cycles subsequent to performing the first measurement. The example method performs a second measurement on a battery cell installed in the location to determine a second charging capacity and compares the second charging capacity to the permitted charging capacity trace region and determines that the battery cell installed in the location at a time of the second measurement is not the same battery cell installed in the location at the time of the first measurement when the second charging capacity is not a value within the set of permitted values of the charging capacity trace region. | 01-07-2016 |
20160033582 | METHOD AND APPARATUS FOR ESTIMATING STATE OF BATTERY - A battery state estimation apparatus includes a sensing data acquirer configured to acquire sensing data of a battery. The apparatus further includes a state of health (SOH) information estimator configured to divide the sensing data based on a predetermined time interval, extract a segment comprising a predetermined number of items of the divided sensing data, and estimate SOH information of the battery based on the segments. | 02-04-2016 |
20160116544 | BATTERY CAPACITY MONITOR - A method for dynamically monitoring a capacity of a battery includes estimating a first voltage threshold of the battery that is being discharged, wherein the first voltage threshold corresponds to a low capacity of the battery, and measuring a present voltage and a present current of the discharging battery. The method further includes re-scaling the present current based on the estimated first voltage threshold and the measured present voltage of the discharging battery, and calculating, based on re-scaling the measured present current, the battery's capacity before the present voltage level decreases below the first voltage threshold. | 04-28-2016 |
20160146892 | TECHNIQUES TO PROVIDE A LOW CAPACITY NOTIFICATION FOR AN ENERGY STORE DEVICE - Disclosed are various systems and methods related to forecasting a low capacity state in an energy storage device of a node. A voltage is measured for the energy storage device of the node based upon measurement criteria. A counter for the node is adjusted based on the measured voltage, where the counter represents a history of instances of previous measurements of the voltage with respect to a voltage limit. The counter is adjusted in one direction if the measured voltage is below the voltage limit, and the counter is adjusted in the opposite direction if the measured voltage meets the voltage limit. If the counter meets a low capacity threshold, a low capacity condition is activated for the node. If the counter fails to meet the low capacity threshold, the value of the counter is stored for subsequent use during the next evaluation of the energy storage device. | 05-26-2016 |
20220137150 | BATTERY DEFECT SCREENING DEVICE AND METHOD - A battery defect screening device including a battery fixer for fixing a battery, a discharger, a charger, a voltmeter for measuring an initial voltage value, a first voltage value, and a second voltage value, and a defect screener for determining the battery to be normal when a first voltage change value, which is obtained by subtracting the first voltage value from the initial voltage value, is less than a first reference value, to have a hard short due to the foreign material when the first voltage change value is greater than the first reference value, to be normal when a second voltage change value, which is obtained by subtracting the second voltage value from the initial voltage value, is less than a second reference value, and to have a soft short due to the foreign material when the second voltage change value is greater than the second reference value. | 05-05-2022 |