A battery box, comprising: a lower frame body closed in a circumferential direction and opened in an up-down direction; and a heat exchange assembly fixed below the lower frame body at a circumferential edge of the heat exchange assembly, the heat exchange assembly and the lower frame body forming an accommodating space which is opened upwardly and used to accommodate a battery, the heat exchange assembly comprising a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate; the heat exchange plate is provided with a flow passage therein for a heat exchange medium to flow, a portion of the heat exchange plate provided with the flow passage is used to support the battery and exchange heat with the battery; the heat insulating pad comprises a first part, the first part has a ring shape, the first part surrounds an entire circumferential edge of the heat exchange plate outside the flow passage and is provided above an upper surface of the circumferential edge of the heat exchange plate, the first part of the heat insulating pad and the circumferential edge of the heat exchange plate are stacked in the up-down direction, the first part of the heat insulating pad is sandwiched between a lower surface of the lower frame body and the upper surface of the circumferential edge of the heat exchange plate; at least a portion of the temperature preserving pad is provided below the heat exchange plate, and the temperature preserving pad at least covers the portion of the heat exchange plate in which the flow passage is provided; the protective plate supports the temperature preserving pad and the heat exchange plate from below; characterized in that the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; the first part of the heat insulating pad, the circumferential edge of the heat exchange plate and the peripheral portion of the protective plate are stacked in the up-down direction; an outer side surface of the first part of the heat insulating pad, an outer side surface of the circumferential edge of the heat exchange plate and an outer side surface of the peripheral portion of the protective plate are flush with each other. a lower frame body closed in a circumferential direction and opened in an up-down direction; and a heat exchange assembly fixed below the lower frame body at a circumferential edge of the heat exchange assembly, the heat exchange assembly and the lower frame body forming an accommodating space which is opened upwardly and used to accommodate a battery, the heat exchange assembly comprising a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate; the heat exchange plate is provided with a flow passage therein for a heat exchange medium to flow, a portion of the heat exchange plate provided with the flow passage is used to support the battery and exchange heat with the battery; the heat insulating pad comprises a first part, the first part has a ring shape, the first part surrounds an entire circumferential edge of the heat exchange plate outside the flow passage and is provided above an upper surface of the circumferential edge of the heat exchange plate, the first part of the heat insulating pad and the circumferential edge of the heat exchange plate are stacked in the up-down direction, the first part of the heat insulating pad is sandwiched between a lower surface of the lower frame body and the upper surface of the circumferential edge of the heat exchange plate; at least a portion of the temperature preserving pad is provided below the heat exchange plate, and the temperature preserving pad at least covers the portion of the heat exchange plate in which the flow passage is provided; the protective plate supports the temperature preserving pad and the heat exchange plate from below; characterized in that the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; the first part of the heat insulating pad, the circumferential edge of the heat exchange plate and the peripheral portion of the protective plate are stacked in the up-down direction; an outer side surface of the first part of the heat insulating pad, an outer side surface of the circumferential edge of the heat exchange plate and an outer side surface of the peripheral portion of the protective plate are flush with each other.