Abstract: An ECU executes a process including: acquiring a result of detection; determining whether a vehicle is being stopped; determining, when the vehicle is being stopped, whether an output value of a hydrogen sulfide sensor is a first threshold value or more; turning on a warning light when the output value is the first threshold value or more; determining, when the vehicle is not being stopped, whether the output value of the hydrogen sulfide sensor is a second threshold value or more; and turning on a warning light when the output value is the second threshold value or more.

Abstract: A cell is a sulfide-based all-solid-state cell. The bus bar of the battery module composed of cells electrically connected in series is connected to the voltage detecting circuit via a printed circuit board including a first conductive trace, a second conductive trace, and a third conductive trace. A portion of the third conductive trace is exposed from the insulating coating film by a cutout portion (missing portion) of the insulating coating film. When the difference between the cell voltage between the first conductive trace and the second conductive trace and the cell voltage between the first conductive trace and the third conductive trace is equal to or larger than a predetermined value, it is determined that the exposed portion of the third conductive trace has been corroded by gas generated from the cell and that gas has been generated from the cell.

Abstract: The unit cell is composed of a sulfide-based all-solid-state battery. The battery pack includes a battery module in which a plurality of unit cells is stacked between a pair of end plates. The battery module is housed in a battery case. A duct is attached to the opening formed in the ceiling surface of the upper case. A desulfurization agent is disposed inside the duct, and is configured as a desulfurization unit. A hydrogen sulfide sensor is disposed inside the duct. By detecting the hydrogen sulfide by the hydrogen sulfide sensor, it is possible to sense that the adsorption amount of the hydrogen sulfide of the desulfurization agent is saturated or that there is a possibility of saturation.

Abstract: An energy storage device includes a plurality of energy storage cells, a case, and a desulfurization unit. The case includes a top wall, and the top wall includes a discharge portion that discharges gas from inside the case to outside the case. The desulfurization unit includes a desulfurization agent and a communication path that contains the desulfurization agent and that allows the inside of the case to communicate with the discharge portion. The communication path includes a discharge-side vertical path extending downward from the discharge portion, a support path extending horizontally from a lower end of the discharge-side vertical path and supporting the desulfurization agent, and a suction-side vertical path extending upward from an end of the support path and opening into the case.

Abstract: In a laminated all-solid-state battery, a negative electrode terminal and a positive electrode terminal around which a resin sheet is wound are sandwiched between exterior members (laminate films), and the exterior members are joined by heat welding. The laminated all-solid-state battery is in contact with the heat exchanger via a heat conductive sheet. When the terminal temperature detected by the temperature sensor provided at the negative electrode terminal and the positive electrode terminal is equal to or higher than a predetermined value, the flow rate control valve is fully closed and the flow rate control valve is fully opened. The cooling amount of the joint portion in which the negative electrode terminal and the positive electrode terminal extend increases, the temperature of the joint portion decreases, the deformation of the resin sheet is suppressed, and the unsealing of the seal is suppressed.

Abstract: When an ECU determines that a gas concentration within a battery pack is increasing, the ECU performs processing including: obtaining positional information; obtaining an amount of insolation; and performing gas exhaust processing when the ECU determines that a vehicle is traveling, determines that the position of the vehicle is a position where there is no cover above the vehicle, and determines that the position of the vehicle is a position where exhaust has no influence.

Abstract: A power storage device is a power storage device including: a battery cell having a sulfide solid electrolyte; a case that accommodates the battery cell; and at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide, wherein a protruding portion is formed in a bottom surface of an inner surface of the case, and the gas collection unit is disposed in the protruding portion.

Abstract: Each cell forming a battery stack has a discharge valve configured to discharge gas in the inside to the outside when an internal pressure increases. A case houses the battery stack. A plate member is provided between each discharge valve and an upper case. The plate member is arranged to overlap with each discharge valve when the battery stack and the plate member are planarly viewed from above.

Abstract: Each cell forming a battery stack has a discharge valve configured to discharge gas in the inside to the outside when an internal pressure increases. A case houses the battery stack. A plate member is provided between each discharge valve and an upper case. The plate member is arranged to overlap with each discharge valve when the battery stack and the plate member are planarly viewed from above.

Abstract: A battery module includes: a plurality of secondary batteries arranged side by side in one direction; a bus bar via which secondary batteries adjacent to each other in the one direction from among the secondary batteries are electrically connected to each other; and a voltage detecting terminal connected to the bus bar. Each of the secondary batteries includes a pair of external terminals. The bus bar includes connecting portions connected to corresponding external terminals, and a protrusion portion protruding upward from the connecting portions. The voltage detection terminal is connected to the protrusion portion.

Abstract: A battery pack includes: a cell stack; a first duct and a second duct configured to feed cooling air toward the cell stack; and a housing case. The first duct and the second duct extend in a first direction and are spaced apart from each other in a second direction, the first direction being parallel to a front-back direction of a vehicle in a mounted state in which the battery pack is mounted on the vehicle, the second direction being parallel to a width direction of the vehicle in the mounted state. The first duct is arranged on an outer side of the cell stack on one side in the second direction, and the second duct is arranged on an outer side of the cell stack on the other side in the second direction.

Abstract: Each cell forming a battery stack has a discharge valve configured to discharge gas in the inside to the outside when an internal pressure increases. A case houses the battery stack. A plate member is provided between each discharge valve and an upper case. The plate member is arranged to overlap with each discharge valve when the battery stack and the plate member are planarly viewed from above.

Abstract: A battery pack includes: a cell stack; a first duct and a second duct configured to feed cooling air toward the cell stack; and a housing case. The first duct and the second duct extend in a first direction and are spaced apart from each other in a second direction, the first direction being parallel to a front-back direction of a vehicle in a mounted state in which the battery pack is mounted on the vehicle, the second direction being parallel to a width direction of the vehicle in the mounted state. The first duct is arranged on an outer side of the cell stack on one side in the second direction, and the second duct is arranged on an outer side of the cell stack on the other side in the second direction.

Abstract: A short circuit of a terminal provided on an end plate is suppressed. A terminal for electrically connecting adjacent battery modules is provided on an end plate. The end plate has a plate main body and a projection. The projection is formed of an upper surface of the end plate which projects from the plate main body to be away from cells in a width direction which is the stack direction of the cells. In plan view of the battery module, the terminal is disposed in a range in which the projection is provided in the front-rear direction orthogonal to the width direction.

Abstract: In a case where an external charging start time is set in an external charging timer when a charging plug is connected to a charging connector, a charging controller is configured to perform standby setting of external charging before the external charging start time and transits to a pause state. The charging controller is intermittently activated during a timer charging setting period from a pause period start time when transition is made to the pause state to the external charging start time, and when a battery temperature at the time of activation of the charging controller is equal to or lower than a predetermined temperature, execute a temperature increase mode in which a heater is operated to increase the temperature of a main battery.

Abstract: A battery system includes: a power detector that detects output power from an external power source; a charging mechanism that charges a main battery by external power; a temperature raising mechanism that raises a temperature of the main battery to a temperature not lower than a reference temperature; and a controller that controls the charging mechanism and the temperature raising mechanism, wherein when the detected output power is lower than a reference power, the controller prohibits a temperature raising process with an SOC of the main battery lower than a charge reference value and performs a charging process.

Abstract: A vehicle includes an electrical storage device, an auxiliary load, a charger configured to charge the electrical storage device with power supplied from a power supply outside the vehicle, and an electronic control unit. The electronic control unit is configured to create an actuation schedule of the auxiliary load during charging of the electrical storage device, before initiation of the charging. The electronic control unit is configured to learn charging power of the electrical storage device for each actuation pattern of the auxiliary load during the charging. The electronic control unit is configured to estimate a required time period for the charging based on a learned value of the charging power, an execution time period of each of the actuation patterns, and a total charging power amount of the electrical storage device. The electronic control unit sets initiation time of the charging in accordance with the estimated required time period.

Abstract: In a case where an external charging start time is set in an external charging timer when a charging plug is connected to a charging connector, a charging controller is configured to perform standby setting of external charging before the external charging start time and transits to a pause state. The charging controller is intermittently activated during a timer charging setting period from a pause period start time when transition is made to the pause state to the external charging start time, and when a battery temperature at the time of activation of the charging controller is equal to or lower than a predetermined temperature, execute a temperature increase mode in which a heater is operated to increase the temperature of a main battery.

Abstract: A battery system includes: a power detector that detects output power from an external power source; a charging mechanism that charges a main battery by external power; a temperature raising mechanism that raises a temperature of the main battery to a temperature not lower than a reference temperature; and a controller that controls the charging mechanism and the temperature raising mechanism, wherein when the detected output power is lower than a reference power, the controller prohibits a temperature raising process with an SOC of the main battery lower than a charge reference value and performs a charging process.

Abstract: A temperature-raising device for an in-car battery includes: a battery temperature acquisition unit configured to acquire a temperature of a battery mounted in a vehicle; an environmental temperature acquisition unit configured to acquire an environmental temperature; a heater configured to raise the temperature of the battery; and a controller configured to i) turn ON or OFF the heater based on a result of a comparison between the battery temperature acquired by the battery temperature acquisition unit and a predetermined threshold, and ii) reduce the threshold in accordance with a reduction in the environmental temperature acquired by the environmental temperature acquisition unit.