A battery box, comprising: a heat exchange plate; and a lower frame body located on the heat exchange plate, wherein the lower frame body comprises edge beams and internal beams, the edge beams form a circumferential closure opened in an up-down direction, the edge beams and the heat exchange plate together form an accommodating space with an upward opening, and the internal beams are located inside the accommodating space and divide the accommodating space into sub-accommodating spaces for placing battery modules; the heat exchange plate is configured to support the battery modules and exchanges heat with batteries of the battery modules, and a bottom plane of the internal beam is partly in contact with a top plane of the heat exchange plate in the up-down direction; and wherein the bottom plane of the internal beam further comprises: a first plane, which is in contact with the top plane of the heat exchange plate; and a second plane, which is recessed upwardly with respect to the first plane from a side of the first plane in a direction that intersects with the up-down direction, so that the second plane is spaced apart from the top plane of the heat exchange plate in the up-down direction; wherein the battery box further comprises heat insulation glue, the heat insulation glue being filled between the second plane of the bottom plane of the internal beam and the top plane of the heat exchange plate; and wherein the internal beam has an accommodating cavity located above a location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate; and the battery box further comprises a fastener, wherein the fastener passes through the heat exchange plate and the internal beam at the location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate and extends into the accommodating cavity, and a part of the fastener extending into the accommodating cavity is spaced apart from a wall of the accommodating cavity. a heat exchange plate; and a lower frame body located on the heat exchange plate, wherein the lower frame body comprises edge beams and internal beams, the edge beams form a circumferential closure opened in an up-down direction, the edge beams and the heat exchange plate together form an accommodating space with an upward opening, and the internal beams are located inside the accommodating space and divide the accommodating space into sub-accommodating spaces for placing battery modules; the heat exchange plate is configured to support the battery modules and exchanges heat with batteries of the battery modules, and a bottom plane of the internal beam is partly in contact with a top plane of the heat exchange plate in the up-down direction; and wherein the bottom plane of the internal beam further comprises: a first plane, which is in contact with the top plane of the heat exchange plate; and a second plane, which is recessed upwardly with respect to the first plane from a side of the first plane in a direction that intersects with the up-down direction, so that the second plane is spaced apart from the top plane of the heat exchange plate in the up-down direction; wherein the battery box further comprises heat insulation glue, the heat insulation glue being filled between the second plane of the bottom plane of the internal beam and the top plane of the heat exchange plate; and wherein the internal beam has an accommodating cavity located above a location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate; and the battery box further comprises a fastener, wherein the fastener passes through the heat exchange plate and the internal beam at the location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate and extends into the accommodating cavity, and a part of the fastener extending into the accommodating cavity is spaced apart from a wall of the accommodating cavity. a first plane, which is in contact with the top plane of the heat exchange plate; and a second plane, which is recessed upwardly with respect to the first plane from a side of the first plane in a direction that intersects with the up-down direction, so that the second plane is spaced apart from the top plane of the heat exchange plate in the up-down direction; wherein the battery box further comprises heat insulation glue, the heat insulation glue being filled between the second plane of the bottom plane of the internal beam and the top plane of the heat exchange plate; and wherein the internal beam has an accommodating cavity located above a location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate; and the battery box further comprises a fastener, wherein the fastener passes through the heat exchange plate and the internal beam at the location where the bottom plane of the internal beam contacts the top plane of the heat exchange plate and extends into the accommodating cavity, and a part of the fastener extending into the accommodating cavity is spaced apart from a wall of the accommodating cavity.