Abstract: A power supply system includes: a power converter for converting electric power of any one of a plurality of batteries and supplying the converted electric power to one or more second loads; a switch capable of selectively connecting any one of the plurality of batteries to the power converter; and a controller for comparing remaining capacities of the respective batteries, and when the difference between the highest remaining capacity and the lowest remaining capacity exceeds a predetermined threshold, controlling the switch to connect the power converter to the battery having the highest remaining capacity.

Abstract: In an aircraft, a cooling target having a different amount of heat depending on a situation is sufficiently cooled. An aircraft (10) is provided with a cooling facility (40a) having a first cooling circuit (42a) and a second cooling circuit (42b) that are independent of each other. The first cooling circuit (42a) includes a first circulation flow path (44a) that allows a first cooling medium to sequentially and repeatedly pass through a cooling target (34a, 34b). Similarly, the second cooling circuit (42b) includes a second circulation flow path (44b) that allows a second cooling medium to sequentially and repeatedly pass through the cooling target. Here, the first circulation flow path (44a) and the second circulation flow path (44b) do not communicate with each other. Therefore, the first cooling medium and the second cooling medium do not merge or split.

Abstract: According to the disclosure, a battery module can be sufficiently cooled in both a steady operation and an emergency operation. A battery system 32 includes a battery module 30 having a plurality of unit cells 40. The battery module 30 is individually provided with a first cooling part 36 through which a first cooling medium 62 flows, by which heat of the unit cells 40 in the battery module 30 is transferred. The unit cells 40 in the battery module 30 are simultaneously cooled by the first cooling part. The battery system 32 includes a second cooling part 78 that discharges a second cooling medium 80 into a casing 34 that houses the battery module 30. The battery module 30 in the casing 34 is simultaneously cooled by the second cooling part.

Abstract: A battery module includes a plurality of battery sets in which first unit cells and second unit cells are adjacent to each other. In the first unit cell, a positive electrode terminal and a negative electrode terminal are oriented and extend in a first direction from a first end portion of a first main body. In the second unit cell, a positive electrode terminal and a negative electrode terminal are oriented and extend in a second direction opposite to the first direction from a first end portion of a second main body. Then, in the battery set, at least a part of the first main body and the second main body overlap and are in contact with each other. Further, a heat conductive material that conducts heat from the first unit cell or the second unit cell is in contact with the battery set.

Abstract: A power converter which can prevent an erroneous detection even when a flow rate of a refrigerant is low and a vehicle having the power converter mounted therein are provided. A first inverter circuit including: an element group constituted by six transistors; six diode temperature sensors at least one of which is provided for each transistor to detect a temperature of the transistor; and a high arm-side refrigerant flow passage and a low arm-side refrigerant flow passage in which a refrigerant for cooling the transistors flows is provided. In a failure detection device of the first inverter circuit, a failure determination member selects two diode temperature sensors among the plurality of diode temperature sensors, which detect temperatures of two adjacent transistors, as an adjacent sensor pair, and determines a failure of any one of the plurality of diode temperature sensors using detection values of the adjacent sensor pair.

Abstract: A power converter which can prevent an erroneous detection even when a flow rate of a refrigerant is low and a vehicle having the power converter mounted therein are provided. A first inverter circuit including: an element group constituted by six transistors; six diode temperature sensors at least one of which is provided for each transistor to detect a temperature of the transistor; and a high arm-side refrigerant flow passage and a low arm-side refrigerant flow passage in which a refrigerant for cooling the transistors flows is provided. In a failure detection device of the first inverter circuit, a failure determination member selects two diode temperature sensors among the plurality of diode temperature sensors, which detect temperatures of two adjacent transistors, as an adjacent sensor pair, and determines a failure of any one of the plurality of diode temperature sensors using detection values of the adjacent sensor pair.