Abstract: A heat exchange plate includes a coolant layer, a refrigerant layer, a first end portion, and a second end portion opposite to the first end portion. The refrigerant layer includes a refrigerant input portion disposed at the first end portion, a refrigerant output portion disposed at the first end portion, a first refrigerant flow path connected to the refrigerant input portion, a second refrigerant flow path connected to the refrigerant output portion, and a connection portion connecting the first and second refrigerant flow paths. The first refrigerant flow path includes a first branch portion, a first converging portion, and a plurality of first branch flow paths connecting the first branch portion and the first converging portion, and the second refrigerant flow path includes a second branch portion, a second converging portion, and a plurality of second branch flow paths connecting the second branch portion and the second converging portion.

Abstract: A battery pack includes a battery module group including a plurality of battery modules, a coolant layer configured to allow a coolant to circulate, and a refrigerant layer configured to allow a refrigerant to circulate. The coolant layer includes a first surface and a second surface opposite to the first surface. The refrigerant layer includes a third surface and a fourth surface opposite to the third surface. The first surface of the coolant layer is closer to the battery module group than the second surface of the coolant layer. The third surface of the refrigerant layer is closer to the battery module group than the fourth surface of the refrigerant layer. The battery module group is arranged along the first surface of the coolant layer. At least part of the coolant layer is arranged between the refrigerant layer and the battery module group in a plan view.

Abstract: A vehicle includes a first heat exchanger plate and a second heat exchanger plate. The first heat exchanger plate includes a first coolant layer in which a coolant flows and a refrigerant layer in which a refrigerant flows, and the second heat exchanger plate includes a second coolant layer in which the coolant flows. The first coolant layer and the second coolant layer are connected to each other via a coolant layer connection passage.

Abstract: The condenser of the heat-exchanging device is provided with a flow passage through which a high-pressure refrigerant flows. The flow passage is structured by openings formed in the plurality of plates. Inside the flow passage, an inner pipe having an outer diameter smaller than the diameter of the openings is disposed. The part inside the flow passage but outside the inner pipe serves as a passage in which the refrigerant that has flown into the condenser flows, and the part inside the inner pipe serves as a passage in which the refrigerant that has passed through the component section flows.