Abstract: (A) A used battery pack is prepared. (B) By disassembling the used battery pack, a cell etc. is collected from the used battery pack. The cell etc. are a nickel-metal hydride battery. (C) A state of charge of the collected cell etc. is adjusted to a state of charge within any of a first SOC range (0 to 3%), a second SOC range (3 to 20%), and a third SOC range (100 to 200%). (G) An amount of voltage lowering as a result of the cell etc. being left is calculated. (H) When the amount of voltage lowering is equal to or smaller than a reference value set in advance, the cell etc. is determined as a good product. (I) A battery pack including the cell etc. determined as the good product is manufactured.

Abstract: A cooling system for cooling a main battery 10 includes a cooling fan 40 and a temperature sensor 61 configured to detect a battery temperature TB. The cooling system performs constant control in which the cooling fan 40 is driven at a constant command value when the battery temperature TB reaches or exceeds a first temperature T0 after startup of the electrically powered vehicle. Additionally, the cooling system detects whether or not a malfunction occurs in the cooling fan 40, based on an actual rpm of the cooling fan 40 obtained during the constant control. The cooling system performs the constant control in a situation in which charging of the main battery 10 is continued for a predetermined period of time or longer after the startup of the vehicle, regardless of whether the battery temperature TB is below the first temperature T0.

Abstract: A secondary battery is installed on an electric vehicle and includes a cooling fan, a temperature sensor and a controller. The controller is configured to drive the cooling fan at a fixed command value for a predetermined period, when the temperature of the secondary battery becomes equal to or higher than a first predetermined temperature after the electric vehicle is started. The controller is configured to detect a presence or absence of an abnormality in the cooling fan based on an actual rotational speed of the cooling fan during the predetermined period. The controller is configured to inhibit driving of the cooling fan at the fixed command value when the temperature of the secondary battery is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature.

Abstract: A recovering device includes a charging chamber configured to overcharge a nickel-metal hydride battery. The charging chamber is provided with: a first water bath; a fixing device configured to fix the nickel-metal hydride battery with a portion of a container of the nickel-metal hydride battery being immersed in the water coolant in the first water bath; a pump; a dial gauge configured to detect a deformation amount of the container of the nickel-metal hydride battery; and a collection container configured to collect the gas exhausted from the exhaust valve of the nickel-metal hydride battery and exhaust the gas to outside the recovering device. The recovering device further includes a controller configured to perform the overcharging process for the nickel-metal hydride battery. The controller is configured to halt the overcharging process when the deformation amount of the container exceeds a threshold value.

Abstract: A method for manufacturing a nickel-metal hydride battery includes: a first step of preparing a first nickel-metal hydride battery having a positive electrode including nickel hydroxide (Ni(OH)2); and a second step of manufacturing the second nickel-metal hydride battery by performing 600% overcharging to the prepared first nickel-metal hydride battery. The 600% overcharging is a process for supplying the first nickel-metal hydride battery with an amount of electric power of 600% of the rated capacity of the first nickel-metal hydride battery.

Abstract: If the battery temperature TB of the main battery is equal to or higher than the first temperature T0 and a noise level within a vehicle interior is equal to or higher than a predetermined value Lo during inhibition of the first constant control under a predetermined condition, the cooling system performs second constant control for driving the cooling fan with a second command value D3 and also performs the problem detection processing based on an actual rotation rate of the cooling fan during the second constant control.

Abstract: A method for determining a state of a rechargeable battery includes obtaining a complex impedance measured by applying AC voltage or AC current to a rechargeable battery that is subject to determination and determining a state of the rechargeable battery based on the obtained complex impedance. The determining a state of the rechargeable battery includes determining whether or not a first capacity shift is occurring based on a comparison of a value of the complex impedance at a predetermined frequency with a first determination value used to determine a negative electrode capacity shift, and when determined that the first capacity shift is not occurring, determining whether or not a second capacity shift is occurring based on a comparison of a gradient of the complex impedance with respect to a real axis in a diffusion resistance region with a second determination value used to determine a positive electrode capacity shift.

Abstract: (A) A used battery pack is prepared. (B) By disassembling the used battery pack, a cell etc. is collected from the used battery pack. The cell etc. are a nickel-metal hydride battery. (C) A state of charge of the collected cell etc. is adjusted to a state of charge within any of a first SOC range (0 to 3%), a second SOC range (3 to 20%), and a third SOC range (100 to 200%). (G) An amount of voltage lowering as a result of the cell etc. being left is calculated. (H) When the amount of voltage lowering is equal to or smaller than a reference value set in advance, the cell etc. is determined as a good product. (I) A battery pack including the cell etc. determined as the good product is manufactured.

Abstract: A control system for a hybrid vehicle includes an internal combustion engine, a rotary electric machine, a battery, a cooling fan configured to cool the battery, and a controller. The controller is configured to determine an operation of the cooling fan based on charged-discharged electric power of the battery and presence or absence of a charging request that is based on an intention of a user. The controller is configured to control the operation of the cooling fan such that the battery is cooled more in a case where the charging request is present than in a case where the charging request is absent with the same charged-discharged electric power.

Abstract: An electricity storage system includes an electricity storage device, a positive electrode line, a negative electrode line, a capacitor, at least two diodes, and a first intermediate line. The electricity storage device is able to supply power to a load. The electricity storage device includes at least two electricity storage groups connected in series. The electricity storage group includes at least two electricity storage elements connected in series. Each electricity storage element includes a current breaker. The capacitor is connected to the positive and negative electrode lines. At least two diodes are connected in series between the positive electrode line and the negative electrode line and are respectively connected in parallel to the electricity storage groups. The first intermediate line is connected between a first connection point at which the electricity storage groups are connected together and a second connection point at which the diodes are connected together.

Abstract: A power I/F unit is for outputting at least one of electric power stored in a power storage device and electric power generated by a motor generator driven by an engine to outside of a vehicle. An ECU selectively executes a first power feeding operation in which external power feeding is performed with the engine actuated and a second power feeding operation in which external power feeding is performed with the engine stopped. The ECU executes the first power feeding operation for a predetermined period from the start of external power feeding.

Abstract: An ECU executes a program including the steps of: performing shipping electric charging control when an electric charging plug is connected and a condition is also established for performing the shipping electric charging control; and if the condition for performing the shipping electric charging control is not established, performing full electric charging control.

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: A secondary battery is installed on an electric vehicle and includes a cooling fan, a temperature sensor and a controller. The controller is configured to drive the cooling fan at a fixed command value for a predetermined period, when the temperature of the secondary battery becomes equal to or higher than a first predetermined temperature after the electric vehicle is started. The controller is configured to detect a presence or absence of an abnormality in the cooling fan based on an actual rotational speed of the cooling fan during the predetermined period. The controller is configured to inhibit driving of the cooling fan at the fixed command value when the temperature of the secondary battery is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature.

Abstract: If the battery temperature TB of the main battery is equal to or higher than the first temperature T0 and a noise level within a vehicle interior is equal to or higher than a predetermined value Lo during inhibition of the first constant control under a predetermined condition, the cooling system performs second constant control for driving the cooling fan with a second command value D3 and also performs the problem detection processing based on an actual rotation rate of the cooling fan during the second constant control.

Abstract: A cooling system includes a cooling fan that blows cooled air to a main battery and a temperature sensor. When the temperature of the main battery is equal to or higher than a first predetermined temperature after start up of an electric drive vehicle, the cooling fan is driven with a constant command value for a predetermined time period and detection process of abnormal condition is performed for detecting presence or absence of abnormal condition of the cooling fan based on an actual rotation speed of the cooling fan. When the start up of the electric drive vehicle is based on an external charging operation of the secondary battery, driving of the cooling fan with the constant command value is inhibited. This structure ensures sufficient opportunities for detecting presence or absence of abnormal condition of the cooling fan.

Abstract: A cooling system for cooling a main battery 10 includes a cooling fan 40 and a temperature sensor 61 configured to detect a battery temperature TB. The cooling system performs constant control in which the cooling fan 40 is driven at a constant command value when the battery temperature TB reaches or exceeds a first temperature T0 after startup of the electrically powered vehicle. Additionally, the cooling system detects whether or not a malfunction occurs in the cooling fan 40, based on an actual rpm of the cooling fan 40 obtained during the constant control. The cooling system performs the constant control in a situation in which charging of the main battery 10 is continued for a predetermined period of time or longer after the startup of the vehicle, regardless of whether the battery temperature TB is below the first temperature T0.

Abstract: An electrical storage system includes an electrical storage device, a motor, a system main relay, a first charging line, a charger, a first charging relay, a second charging line, an inlet, a second charging relay and a controller. The controller is configured to control a energizing state and a non-energizing state of the system main relay, the first charging relay and the second charging relay. The controller is configured to cause the first charging relay to the non-energizing state when the second charging relay in the energizing state is subjected to adhesion.

Abstract: A control system for a hybrid vehicle includes an internal combustion engine, a rotary electric machine, a battery, a cooling fan configured to cool the battery, and a controller. The controller is configured to determine an operation of the cooling fan based on charged-discharged electric power of the battery and presence or absence of a charging request that is based on an intention of a user. The controller is configured to control the operation of the cooling fan such that the battery is cooled more in a case where the charging request is present than in a case where the charging request is absent with the same charged-discharged electric power.

Abstract: A motor generates a kinetic energy for use in running of a vehicle. An electric storage apparatus is charged and discharged and outputs a driving electric power for the motor through the discharge. A display displays a cruising distance over which the vehicle can be run with the motor. A controller calculates the cruising distance based on a full charge capacity of the electric storage apparatus and displays the cruising distance on the display. When the full charge capacity at a present time is smaller than the full charge capacity at a past time and the electric storage apparatus is not discharged, or when the full charge capacity at the present time is larger than the full charge capacity at the past time and the electric storage apparatus is not charged, the controller displays the cruising distance based on the full charge capacity at the past time on the display.