Patent application number | Description | Published |
20120169281 | VEHICLE CHARGING SYSTEM AND ELECTRICALLY POWERED VEHICLE PROVIDED WITH THE SAME - An AC/DC converter is configured to perform voltage conversion on power supplied from an AC power supply and supply the power to an auxiliary load during external charging in which a main power storage device is charged by the AC power supply. An auxiliary power storage device stores power to be supplied to the auxiliary load. A diode permits discharging of the auxiliary power storage device while preventing charging of the auxiliary power storage device during the external charging. A current sensor detects discharging of the auxiliary power storage device. A controller adjusts an output voltage of the AC/DC converter while confirming whether or not the auxiliary power storage device discharges, based on a detection value of the current sensor. | 07-05-2012 |
20120300523 | POWER SUPPLY DEVICE - A power supply device includes: a magnetic-coupling-type multi-phase converter having first and second chopper circuits that respectively adjust respective currents flowing in first and second reactors magnetically coupled to each other, and performing voltage conversion between a DC power supply and a load; and a control circuit. The control circuit includes a determination unit and a current control unit. The determination unit determines whether the temperature of the power supply is lower than a reference temperature. In the case where the power supply temperature is lower than the reference temperature, the current control unit uses a value determined by adding an offset amount to a detected value of the reactor current to set a duty command value for the first chopper circuit and uses a detected value of the reactor current to set a duty command value for the second chopper circuit. | 11-29-2012 |
20120313584 | VEHICLE - A vehicle includes a PCU controlling electric power supplied to a motor, a first power storage device, a second power storage device, an ECU, a charger, system main relays SMR | 12-13-2012 |
20130020863 | POWER SUPPLY SYSTEM AND VEHICLE EQUIPPED WITH POWER SUPPLY SYSTEM - A power supply system or a vehicle includes: a first storage device; a charging device charging the first storage device with external power; a second storage device supplying an auxiliary load with a voltage lower than an output voltage of the first storage device; a first converter stepping down a voltage of power from the first storage device and supplying the auxiliary load and the second storage device with a voltage; a first controller controlling the charging device; a second converter smaller in capacity than the first converter, supplying the first controller with a voltage and charging the second storage device with the external power; and a second controller, when the external power is charged, controlling the first and second converters to selectively operate any one of the first and second converters based on a state of charge of the second storage device and a state of the auxiliary load. | 01-24-2013 |
20130093394 | CHARGING DEVICE FOR ELECTROMOTIVE VEHICLE - An AC-DC converter converts an alternating-current voltage, supplied from an external power supply, to a direct-current voltage higher than a peak voltage of the alternating-current voltage, and outputs the direct-current voltage to a first power supply line. In a normal control mode, a DC-DC converter steps down a voltage of the power supply line through on/off control over a switching element to charge a main battery. On the other hand, in an upper arm ON control mode, the DC-DC converter charge the main battery while the switching element is kept in an on state. On the basis of a state of external charging, a control device applies the upper arm ON control mode when a condition that upper arm ON control is applicable is satisfied, and applies the normal control mode when the condition is not satisfied. | 04-18-2013 |
20130134908 | POWER SUPPLY SYSTEM AND VEHICLE EQUIPPED WITH POWER SUPPLY SYSTEM - A power supply system includes: a first electrical storage device; a charging device charging the first electrical storage device with external power from an external power supply; a second electrical storage device supplying an auxiliary load with a voltage lower than an output voltage of the first electrical storage device; a first converter stepping down a voltage of power from the first electrical storage device and supplying the auxiliary load and the second electrical storage device with a voltage; a second converter having a capacity smaller than that of the first converter and charging the second electrical storage device with the external power; and a controller, when the external power is charged, controlling charging power from the charging device to the first electrical storage device and charging power from the second converter to the second electrical storage device based on a state of charge of the second electrical storage device. | 05-30-2013 |
20130193751 | VEHICULAR POWER SUPPLY APPARATUS, VEHICLE INCLUDING THE SAME, AND METHOD FOR CONTROLLING VEHICLE-MOUNTED CHARGER - A charger is configured to receive electric power from an external power supply and charge a main power storage device and a power storage device for auxiliary machinery. The charger includes a capacitor for smoothing charging power outputted to the main power storage device. A PM-ECU controls charging of the power storage device for auxiliary machinery by the charger such that the power storage device for auxiliary machinery can receive residual electric charge in the capacitor. The PM-ECU controls the charger, after the end of charging of the main power storage device by the charger, such that the residual electric charge in the capacitor is discharged into the power storage device for auxiliary machinery. | 08-01-2013 |
20130193917 | CHARGING DEVICE AND CHARGING METHOD FOR POWER STORAGE DEVICE - A charger includes a conversion unit for converting external electric power from a charging port into DC, a conversion unit for converting the output of the preceding conversion unit into high-frequency AC, and a conversion unit for converting the electric power generated by transforming the output of the preceding conversion unit by an insulated transformer into DC to output the DC to a power storage device. The charger further includes a switch unit that enables the circuit configuration of the charger to switch between a single-stage charging circuit and a dual-stage charging circuit. The switch unit is controlled by a control signal from an ECU. The ECU controls the switch unit in accordance with the SOC of the power storage device and switches the circuit configuration of the charger to one of the single-stage charging circuit and the dual-stage charging circuit. | 08-01-2013 |
20130207607 | POWER FEEDING DEVICE, VEHICLE EQUIPPED WITH THE SAME, AND POWER FEEDING METHOD - A switching relay is configured to switch between a first power feeding path for feeding power from a charge inlet to an outlet and a second power feeding path for feeding power from a power storage device to the outlet. A PM-ECU controls the switching relay to switch between the first power feeding path and the second power feeding path, based on a result of comparison between a power cost in a case where the power is fed to the outlet through the first power feeding path and a power cost in a case where the power is fed to the outlet through the second power feeding path. | 08-15-2013 |
20130221920 | CHARGING APPARATUS FOR VEHICLE - A vehicle is equipped with a main battery, an auxiliary machinery battery, a high-capacitance DC/DC converter which converts power on an electric path between the main battery and a motor-generator for traveling to supply the converted power to the auxiliary machinery battery, a low-capacitance sub power supply which converts power on an electric path between the main battery and an external power supply to supply the converted power to the auxiliary machinery battery, and a control device which controls the sub power supply. The control device determines whether or not the DC/DC converter has an abnormality, and operates the sub power supply to perform precharging when it is determined that the DC/DC converter is abnormal. An auxiliary machinery battery voltage V | 08-29-2013 |
20130257375 | POWER SUPPLY APPARATUS FOR ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - An electrically powered vehicle has a main battery and an auxiliary battery mounted therein. In external charging, a charging device performs AC/DC power conversion converting power received from an external power supply into power charged to main battery. A sub charging relay is connected between a predetermined node on an electric conduction path of the charging device in the AC/DC power conversion and the auxiliary battery. The sub charging relay is turned off in the external charging. The charging device is configured such that when the external charging is not performed and the sub charging relay is turned on the charging device performs DC/DC power conversion to convert power of the main battery via at least a portion of the electric conduction path in the AC/DC power conversion into power to be charged to the auxiliary battery and outputs the converted power on the predetermined node. | 10-03-2013 |
20130297129 | HYBRID VEHICLE - An outlet is provided to output power stored in a power storage device as commercial power, and the outlet receives power supply from the power storage device via a voltage converter. A car navigation device is configured to store information about traveling of a vehicle to a destination. An ECU obtains the information about traveling to the destination from the car navigation device, and controls a state of charge of the power storage device based on the information up to the destination and a usage status of the outlet up to the destination. | 11-07-2013 |
20140028256 | POWER SUPPLY APPARATUS FOR ELECTRICALLY POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - If an external power supply is not connected to an electrically powered vehicle by a charging cable and there is a request to output electric power from an AC receptacle, a power generation mode is selected and a charger receives electric power from a main battery, converts it into alternating current electric power, and outputs it to a power line. In the power generation mode when an auxiliary machinery system is fed with electric power one of a first mode (a normal mode) and a second mode (a high-output mode) is selected depending on electric power used at the AC receptacle. In the normal mode, a main DC/DC converter is stopped, while an AC/DC converter is operated to generate auxiliary electric power. In the high-output mode, the main DC/DC converter is operated to generate auxiliary electric power, while the AC/DC converter is stopped. | 01-30-2014 |
20140084818 | POWER SOURCE SYSTEM, VEHICLE INCLUDING SAME, AND METHOD FOR CONTROLLING POWER SOURCE SYSTEM - A first opening/closing device is connected between a power storage device and a first pair of power lines. A second opening/closing device is connected between the power storage device and a second pair of power lines. A third opening/closing device opens and closes an electric conduction path between the power storage device and each of the first opening/closing device and the second opening/closing device. When starting to externally supply electric power, a control device charges a first capacitor connected between the first pair of power lines by closing the first opening/closing device and the third opening/closing device, and thereafter charges a second capacitor connected between the second pair of power lines by closing the second opening/closing device and opening the third opening/closing device. | 03-27-2014 |
20140145502 | VEHICLE POWER-SUPPLY SYSTEM AND CONTROL METHOD THEREOF - A vehicle power-supply system includes a main power storage device that supplies power to a load circuit; a sub power storage device that outputs a voltage different from a voltage of the main power storage device and supplies power to an auxiliary device load circuit of the vehicle; a charging circuit that is connected between the main power storage device and the sub power storage device and charges the sub power storage device using power supplied from the main power storage device; and a control device that controls the charging circuit. The control device charges the sub power storage device via the charging circuit when a predetermined time elapses after a stop command for the vehicle power-supply system is entered, and stops the charging of the sub power storage device when a starting preparation for the vehicle power-supply system is detected. | 05-29-2014 |
20140183942 | POWER SUPPLY SYSTEM, VEHICLE EQUIPPED WITH THE SAME, AND CONTROL METHOD FOR POWER SUPPLY SYSTEM - A power conversion unit including a bidirectional converter, a sub DC-DC converter, and a main DC-DC converter selectively performs first power conversion converting power supplied from outside of a vehicle into charging power for a power storage unit, and second power conversion converting power stored in the power storage unit into output power to the outside of the vehicle. When charging of the power storage unit from the outside of the vehicle is performed in an emergency where power or a power amount to be output to the outside of the vehicle when the second power conversion is performed is requested to be greater than usual, the power conversion unit performs the first power conversion such that a state quantity indicating a state of charge of the power storage unit becomes greater than usual. | 07-03-2014 |
20140191720 | CHARGING SYSTEM AND CHARGING CONTROL METHOD OF ELECTRIC POWERED VEHICLE - A power storage device mounted on an electric powered vehicle is configured to include a plurality of battery units. A charger outputs onto power lines the charging power for charging the power storage device by a power supply external to the vehicle. A plurality of relays switch the electrical connection between the power lines and the plurality of battery units. A control device controls the plurality of relays to reduce the number of battery units that are the subject of charging when the current leakage value during overall charging of the plurality of battery units is high. | 07-10-2014 |
20140203634 | POWER SOURCE APPARATUS FOR ELECTRICALLY POWERED VEHICLE AND CONTROL METHOD THEREFOR - During external charging, a charger converts AC electric power from an external power supply into electric power for charging a main battery. An AC/DC converter converts the AC electric power on the power line into auxiliary electric power. The charger is further capable of executing power conversion for converting output electric power of the main battery into AC electric power for output to the power line. While a vehicle is running, normally, the charger and the AC/DC converter are stopped, and the auxiliary electric power obtained by converting the output electric power of the main battery by a main DC/DC converter is output. At the time of regenerative braking of the vehicle, where charging of the main battery is prohibited or restricted, the charger and the AC/DC converter are further operated to intentionally increase loss power, thereby generating auxiliary electric power. | 07-24-2014 |
20140203637 | POWER SUPPLY SYSTEM FOR ELECTRIC POWERED VEHICLE AND METHOD FOR CONTROLLING THE SAME - First and second system main relays are connected between a first power storage device and a second power storage device, respectively, and a first power line. First and second relays for charging are connected between first and second power storage devices, respectively, and a second power line. A control device selectively forms any of a first power feed path formed by connecting each of the first and second power storage devices to the first power line, and a second power feed path formed by connecting, to the first power line, one of the first and second power storage devices connected in parallel when the first and second relays are turned ON, thereby ensuring a power feed path to the load. | 07-24-2014 |
20140203735 | ELECTRIC STORAGE SYSTEM AND CONTROL METHOD OF ELECTRIC STORAGE SYSTEM - An electric storage system includes a charger which supplies power from an external power source to an electric storage apparatus and supplies power of the electric storage apparatus to an external device. A first and a second system main relay allow connection between a positive electrode terminal and a negative electrode terminal of the electric storage apparatus and a load, respectively. A third system main relay is connected in series with a current limiting resistor and, together with the current limiting resistor, is connected in parallel with the first system main relay. A first and a second charge relay allow connection between the positive electrode terminal and the negative electrode terminal of the electric storage apparatus and the charger, respectively. A third charge relay is connected in series with the abovementioned current limiting resistor and, together with the current limiting resistor, is connected in parallel with the first charge relay. | 07-24-2014 |
20140203759 | POWER SUPPLY SYSTEM OF VEHICLE AND VEHICLE INCLUDING SAME - A power supply system of a vehicle includes: a first power storage device that stores power for travel; a second power storage device that stores power for auxiliary equipment; a voltage conversion device that is provided between the first power storage device and the second power storage device, and that charges the second power storage device through voltage conversion of power that is outputted by the first power storage device; and a control device that executes charging control of charging the second power storage device by way of the voltage conversion device, while the vehicle is parked. The control device determines an abnormality in the second power storage device on the basis of information relating to dark current in the second power storage device during parking, and, upon determination of abnormality in the second power storage device, sets the charging control to non-execution. | 07-24-2014 |
20140214251 | POWER SOURCE SYSTEM FOR VEHICLE, VEHICLE, AND VEHICLE CONTROL METHOD - A power source system for a vehicle includes a first power storage device, a second power storage device, a voltage converter, and a controller. The controller is configured to (a) execute a charging control in which the second power storage device is charged by the voltage converter when a parking time of the vehicle exceeds a predetermined period of time, (b) estimate a decrease amount in a state of charge of the first power storage device in a time period from after elapse of the predetermined period of time until a start of the vehicle, (c) set a lower limit of the state of charge based on the decrease amount, and (d) not execute the charging control when the state of charge is lower than the lower limit. | 07-31-2014 |
20140217812 | ELECTRIC VEHICLE AND METHOD OF CONTROLLING ELECTRIC VEHICLE - An electric vehicle includes: a storage device configured to store power used for traveling; an auxiliary battery configured to store power supplied to an auxiliary load; a converter configured to charge the auxiliary battery by using power supplied from the storage device; and a shut-off device configured to switch between a supply condition in which power is supplied to the auxiliary load from the auxiliary battery and a shut-off condition in which power is not supplied to the auxiliary load from the auxiliary battery. During control of the electric vehicle, the converter is controlled such that an output voltage of the converter is higher when the shut-off device is in the shut-off condition than when the shut-off device is in the supply condition. | 08-07-2014 |
20140343776 | POWER SUPPLY SYSTEM FOR VEHICLE - A power supply system for a vehicle includes: first and second power lines connected to a PCU; first and second power storage devices each configured to be rechargeable; a capacitor connected between the first power line and the second power line; a switching unit configured to be able to switch between a first state in which one of the first and second power storage devices is connected between the first power line and the second power line, and a second state in which the first and second power storage devices are connected in series between the first power line and the second power line; and a control device for setting the switching unit in the first state to charge the capacitor, and thereafter setting the switching unit in the second state to charge the capacitor. | 11-20-2014 |