Abstract: A cooling device for a battery that is mounted in a vehicle includes: a cooling fan that is configured to suck air in a vehicle interior, and to blow the sucked air to the battery; an intake air temperature sensor that is configured to detect a temperature of the air sucked by the cooling fan; and an electronic control unit that is configured (i) to control the cooling fan, and (ii) to prohibit the cooling fan from being operated when a detected value of the intake air temperature sensor is lower than a first temperature.

Abstract: A battery includes at least an electrode group including a positive electrode, a separator, a negative electrode, and a protection layer. The separator is interposed between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector, a positive electrode mixture layer, and a positive electrode tab. The positive electrode mixture layer is disposed on a surface of the positive electrode current collector. The positive electrode tab is electrically connected to the positive electrode current collector. The protection layer covers a surface of the positive electrode tab. A volume resistivity of the protection layer is within a range of one to 100 times a volume resistivity of the positive electrode mixture layer.

Abstract: When a voltage value of an electrical storage device becomes higher than a predetermined voltage value for identifying an overcharged state of the electrical storage device, calculation of a heat generation amount of the electrical storage device based on a current value is started. When the calculated heat generation amount is larger than a predetermined amount, it is determined that the electrical storage device is in an abnormal state (abnormal state related to heating). Because the electrical storage device enters an easily heated state when the voltage value becomes higher than the predetermined voltage value, the heat generation amount may be monitored by starting calculation of the heat generation amount. Once the voltage value becomes higher than the predetermined voltage value, irrespective of a high/low relationship between the voltage value and the predetermined voltage value, the abnormal state may be determined by monitoring the heat generation amount.

Abstract: A power supply system includes a controller. The controller is configured to; a) control charging and discharging of an electrical storage device upon reception of an output of a current sensor and a voltage sensor, b) calculate a control current value by subtracting an offset value from a detected value of the current sensor, c) calculate a first determination result and a second determination result, respectively obtained by determining whether the electrical storage device is being charged or discharged based on the control current value, and based on a change in a remaining amount of charge of the electrical storage device, and d) when the first determination result and the second determination result differ from each other, change the offset value such that the first determination result coincides with the second determination result.

Abstract: A battery includes at least an electrode group including a positive electrode, a separator, a negative electrode and a protection layer. The separator is interposed between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector, a positive electrode mixture layer, and a positive electrode tab. The positive electrode mixture layer is disposed on a surface of the positive electrode current collector. The positive electrode tab is electrically connected to the positive electrode current collector. The protection layer covers a surface of the positive electrode tab. A volume resistivity of the protection layer is within a range of one to 100 times a volume resistivity of the positive electrode mixture layer.

Abstract: Power storage system includes battery containing an electrolytic solution, and ECU that controls permission and prohibition of charge/discharge of battery based on inside temperature of battery. ECU sets determination temperature equal to or higher than freezing point of the electrolytic solution and determination temperature higher than determination temperature. ECU prohibits charge/discharge of battery when inside temperature falls below determination temperature while the electrolytic solution is in a liquid state, and cancels the prohibition of charge/discharge of battery when the electrolytic solution turns into the liquid state from a state in which the electrolytic solution is at least partially solidified, and when the temperature of battery exceeds determination temperature.

Abstract: A cylindrical battery includes a battery case, a cap, an electric insulating ring, and an outer package label. The battery case houses an electrode body therein, and is connected to negative electrodes. The cap includes a first projecting portion sealing a housing opening of the battery case and serving as a positive electrode projection, and a flat portion connected to the first projecting portion, a peripheral edge portion of the flat portion being located adjacent to the battery case with an electric insulator interposed therebetween. The electric insulating ring covers the flat portion and an adjacent portion between the flat portion and the battery case, and is formed with an exposure hole corresponding to the first projecting portion. A second projecting portion is provided on a surface of the flat portion that faces the electric insulating ring.

Abstract: A control system for a battery includes a current sensor and an electronic control unit. The electronic control unit is configured to calculate a first error and a second offset error of the current sensor respectively based on outputs of the current sensor just before a stop of the electronic control unit and at startup of the electronic control unit. The electronic control unit is configured to correct an output of the current sensor by using a first error when a temperature of the current sensor at startup of the electronic control unit is higher than or equal to a threshold temperature, and correct the output of the current sensor by using a second error when the temperature of the current sensor at startup of the electronic control unit is lower than the threshold temperature.

Abstract: Power storage system includes battery containing an electrolytic solution, and ECU that controls permission and prohibition of charge/discharge of battery based on inside temperature of battery. ECU sets determination temperature equal to or higher than freezing point of the electrolytic solution and determination temperature higher than determination temperature. ECU prohibits charge/discharge of battery when inside temperature falls below determination temperature while the electrolytic solution is in a liquid state, and cancels the prohibition of charge/discharge of battery when the electrolytic solution turns into the liquid state from a state in which the electrolytic solution is at least partially solidified, and when the temperature of battery exceeds determination temperature.

Abstract: In the present invention, in a vehicle equipped with an engine, a dynamo-electric machine, and a secondary cell as a power storage device, when supplying of electric power from the engine to the power storage device is stopped, an indicator value indicating the degree to which the ion concentration in an electrolytic solution is biased by discharging of the power storage device is acquired, a shift position is acquired from a shift lever mechanism of the vehicle, the acquired shift position is the neutral position, and the acquired indicator value exceeds a threshold value at which cell degradation occurs, the charging/discharging control device for an onboard secondary cell according to the present invention causes a notification means to issue a notification as a warning to change from the neutral position to another shift position.

Abstract: A control apparatus for a hybrid vehicle including an engine and a motor, includes a controller to update an allowable input current value in accordance with the battery state and to control an input to the battery, the allowable input current value being the maximum current value to which the battery input is permitted. The controller performs control such that limitation of the battery input in accordance with the allowable input current value is not performed if a deterioration degree of a catalyst for purifying an exhaust gas from the engine is larger than a predetermined value when an engine braking force and a regenerative motor braking force are applied during deceleration.

Abstract: An electric vehicle includes: a vehicle drive apparatus configured to receive electricity to generate vehicle drive power and to generate electricity; a secondary battery that selectively receives and outputs electricity from/to the vehicle drive apparatus; a current sensor that selectively detects (a) an electric current to be input into the secondary battery and (b) an electric current output from the secondary battery; and an electronic control unit configured to control charging and discharging of the secondary battery, and configured to calculate, using a detected value from the current sensor, an evaluation value indicating a degree of deterioration of the secondary battery due to non-uniformity in salt concentration in the secondary battery caused by charging and discharging of the secondary battery. The electronic control unit is configured to execute a capacity-raising control in which a remaining capacity of the secondary battery is raised when the evaluation value reaches a prescribed threshold.

Abstract: A cooling device for a battery that is mounted in a vehicle includes: a cooling fan that is configured to suck air in a vehicle interior, and to blow the sucked air to the battery; an intake air temperature sensor that is configured to detect a temperature of the air sucked by the cooling fan; and an electronic control unit that is configured (i) to control the cooling fan, and (ii) to prohibit the cooling fan from being operated when a detected value of the intake air temperature sensor is lower than a first temperature.

Abstract: In a hybrid vehicle, an ECU executes a forced charging control for forcibly charging a battery by using an engine and a vehicle driving device in a case where a remaining capacity of the battery is equal to or less than a predetermined value. In a case where an evaluation value shows a degree of deterioration of the battery attributable to excessive charging, the ECU uses a first electric power as an electric charging power for charging the battery when an absolute value of the evaluation value is equal to or lower than a first threshold, and uses a second electric power falling short of the first electric power as the electric charging power for charging the battery when the absolute value of the evaluation value is higher than the first threshold in a case where the forced charging control is executed while the hybrid vehicle is stopped.

Abstract: A power supply system includes a controller. The controller is configured to; a) control charging and discharging of an electrical storage device upon reception of an output of a current sensor and a voltage sensor, b) calculate a control current value by subtracting an offset value from a detected value of the current sensor, c) calculate a first determination result and a second determination result, respectively obtained by determining whether the electrical storage device is being charged or discharged based on the control current value, and based on a change in a remaining amount of charge of the electrical storage device, and d) when the first determination result and the second determination result differ from each other, change the offset value such that the first determination result coincides with the second determination result.

Abstract: A control system for a battery includes a current sensor and an electronic control unit. The electronic control unit is configured to calculate a first error and a second offset error of the current sensor respectively based on outputs of the current sensor just before a stop of the electronic control unit and at startup of the electronic control unit. The electronic control unit is configured to correct an output of the current sensor by using a first error when a temperature of the current sensor at startup of the electronic control unit is higher than or equal to a threshold temperature, and correct the output of the current sensor by using a second error when the temperature of the current sensor at startup of the electronic control unit is lower than the threshold temperature.

Abstract: When a voltage value of an electrical storage device becomes higher than a predetermined voltage value for identifying an overcharged state of the electrical storage device, calculation of a heat generation amount of the electrical storage device based on a current value is started. When the calculated heat generation amount is larger than a predetermined amount, it is determined that the electrical storage device is in an abnormal state (abnormal state related to heating). Because the electrical storage device enters an easily heated state when the voltage value becomes higher than the predetermined voltage value, the heat generation amount may be monitored by starting calculation of the heat generation amount. Once the voltage value becomes higher than the predetermined voltage value, irrespective of a high/low relationship between the voltage value and the predetermined voltage value, the abnormal state may be determined by monitoring the heat generation amount.

Abstract: In a hybrid vehicle, an ECU executes a forced charging control for forcibly charging a battery by using an engine and a vehicle driving device in a case where a remaining capacity of the battery is equal to or less than a predetermined value. In a case where an evaluation value shows a degree of deterioration of the battery attributable to excessive charging, the ECU uses a first electric power as an electric charging power for charging the battery when an absolute value of the evaluation value is equal to or lower than a first threshold, and uses a second electric power falling short of the first electric power as the electric charging power for charging the battery when the absolute value of the evaluation value is higher than the first threshold in a case where the forced charging control is executed while the hybrid vehicle is stopped.

Abstract: A battery charge/discharge control device (20) includes an input-enabled power adjustment unit (40) having an input-enabled current value calculation unit (42) and an input power limit value calculation unit (44). The input-enabled current value calculation unit (42) uses a battery current value, a battery temperature value, and an estimated charge capacity value at the time “t” upon execution of detection, so as to obtain an input-enabled current value reduction amount per unit time during charge and an enabled current amount recovery amount per unit time when being left uncontrolled.

Abstract: An electric vehicle includes: a vehicle drive apparatus configured to receive electricity to generate vehicle drive power and to generate electricity; a secondary battery that selectively receives and outputs electricity from/to the vehicle drive apparatus; a current sensor that selectively detects (a) an electric current to be input into the secondary battery and (b) an electric current output from the secondary battery; and an electronic control unit configured to control charging and discharging of the secondary battery, and configured to calculate, using a detected value from the current sensor, an evaluation value indicating a degree of deterioration of the secondary battery due to non-uniformity in salt concentration in the secondary battery caused by charging and discharging of the secondary battery. The electronic control unit is configured to execute a capacity-raising control in which a remaining capacity of the secondary battery is raised when the evaluation value reaches a prescribed threshold.