Patent application number | Description | Published |
20090033292 | Battery status detecting method and battery status detecting apparatus - A battery status detecting method for detecting a battery status of a secondary battery is disclosed. The method includes: an open circuit voltage correcting step of obtaining a temperature-corrected value of the open circuit voltage of the secondary battery according to the temperature of the secondary battery, based on first open circuit voltage characteristics indicating the relationship between the open circuit voltage and the temperature of the secondary battery; and a charge rate correcting step of obtaining a temperature-corrected value of the charge rate of the secondary battery according to the temperature-corrected value of the open circuit voltage obtained in the open circuit voltage correcting step, based on second open circuit voltage characteristics indicating the relationship between the open circuit voltage and the charge rate of the secondary battery. | 02-05-2009 |
20090037124 | Battery status detecting method, battery status detecting apparatus, and expression deriving method - A battery status detecting method for detecting a battery status of a secondary battery that supplies power to an electrical load is disclosed. This method includes measuring a discharge current value of the secondary battery, and estimating the dischargeable capacity or the dischargeable time of the secondary battery with the measured discharge current value based on discharge characteristics of the secondary battery indicating the discharge status of the secondary battery when the voltage of the secondary battery drops to a predetermined voltage specified by the electrical load. | 02-05-2009 |
20090155674 | Battery Pack, Portable Device, Internal Short Detecting Method, and Internal Short Detecting Program - In a battery pack including a battery unit containing a plurality of secondary batteries, an occurrence of an internal short-circuit in the battery unit is detected based on a difference between a first voltage of the battery unit detected at a time a current flowing in the battery unit is below a predetermined current value and a second voltage of the battery unit detected at a time after a predetermined period has elapsed while the current flowing in the battery unit is below the predetermined current value. | 06-18-2009 |
20110112782 | BATTERY STATUS DETECTION DEVICE - A battery status detection device for detecting the status of a secondary battery | 05-12-2011 |
20110119005 | BATTERY-STATE MONITORING APPARATUS - A battery-state monitoring apparatus includes: a secondary battery | 05-19-2011 |
20110187329 | BATTERY CONDITION DETECTOR, BATTERY PACK INCLUDING SAME, AND BATTERY CONDITION DETECTING METHOD - A battery condition detector configured to detect a micro short circuit of a rechargeable battery is disclosed. The battery condition detector includes a processing part configured to calculate the remaining capacity and the full-charge capacity of a rechargeable battery | 08-04-2011 |
20110267726 | PROTECTION MONITORING CIRCUIT, BATTERY PACK, SECONDARY BATTERY MONITORING CIRCUIT, AND PROTECTION CIRCUIT - A protection monitoring circuit | 11-03-2011 |
20110273804 | PROTECTION MONITORING CIRCUIT AND BATTERY PACK - A protection monitoring circuit | 11-10-2011 |
20120121952 | BATTERY STATUS DETECTING DEVICE AND BATTERY PACK WHERE THE BATTERY STATUS DETECTING DEVICE IS PROVIDED - A battery status detecting device, the battery status detecting device being configured to detect a status of a rechargeable battery which powers an electronic device, the battery status detecting device includes a capacity degradation rate calculating part configured to calculate a capacity degradation rate of the rechargeable battery; an internal resistance value calculating part configured to calculate an internal resistance value of the rechargeable battery; a determining part configured to determine necessity of exchange of the rechargeable battery based on the capacity degradation rate calculated by the capacity degradation rate calculating part and the internal resistance value calculated by the internal resistance value calculating part; and an outputting part configured to output a signal corresponding to a determination result of the determining part, wherein the determining part determines that the exchange of the rechargeable battery is necessary in a case where one of or both of the capacity degradation rate calculated by the capacity degradation rate calculating part and the internal resistance value calculated by the internal resistance value calculating part reach a value requiring the exchange of the rechargeable battery. | 05-17-2012 |
20120137053 | MICROPROCESSOR - A microprocessor to be connected with an external device is disclosed. The microprocessor includes a non-rewritable memory including a first interrupt vector table storing addresses of plural programs that allow plural types of interrupts, and an area storing a processing program in an address indicated by each of vectors in the first interrupt vector table; a rewritable non-volatile memory including a second interrupt vector table that includes contents identical to contents of the first interrupt vector table; an address changing section that conducts address change from an address for accessing the first interrupt vector table to another address for accessing the second interrupt vector table; a writing section that writes an address of an arbitrary vector of the second interrupt vector table and a processing program stored in the address indicated by the arbitrary vector in the rewritable non-volatile memory upon instruction supplied from the external device. | 05-31-2012 |
20120290236 | BATTERY CONDITION DETECTING APPARATUS - There is provided a battery condition detecting apparatus including a voltage detecting unit configured to detect an open voltage of a secondary battery, and a charging rate calculating unit configured to calculate a charging rate by applying a charged open voltage obtained by charging the secondary battery and detected by the voltage detecting unit to a first battery property indicative of a relationship between the charged open voltage and the first battery property, and for calculating the charging rate by applying a discharged open voltage obtained by discharging the secondary battery and detected by the voltage detecting unit to a second battery property indicative of a relationship between the discharged open voltage and the second battery property. | 11-15-2012 |
20120290237 | BATTERY CONDITION DETECTING APPARATUS AND BATTERY CONDITION DETECTING METHOD - There is provided a battery condition detecting apparatus including a unit for detecting a secondary battery temperature, a unit for calculating a capacity holding rate of the secondary battery, a unit for detecting a secondary battery voltage, a unit for calculating a waiting time between a time point when a current becomes a predetermined current value or smaller and a time point when a voltage variation per a unit time based on a battery property indicative of a relationship among a temperature of the secondary battery, a capacity holding rate, and the waiting time in response to the temperature detected by the unit and a capacity holding rate calculated by the unit, and a unit for estimating a condition of a residual quantity of the secondary battery based on the voltage detected by the unit after the waiting time calculated by the unit elapses. | 11-15-2012 |
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 |