Energy storage device and power supply system

Abstract

The application discloses an energy storage device and a power supply system. The energy storage device comprises a battery module and a wire harness sampling assembly. The battery module comprises a first battery pack, a second battery pack and a bearing disc. The bearing disc is provided with a mounting position. The first circuit board and the second circuit board are arranged in the mounting position. The area of the mounting position which is not covered by the first circuit board is an exposed area. The second circuit board covers part of the first circuit board and at least part of the exposed area. The first battery pack and the second battery pack each comprise a plurality of single batteries. The first battery pack and the second battery pack are arranged along the arrangement direction of the plurality of single batteries. The wire harness sampling assembly is arranged on one side of the battery module in the height direction. The wire harness sampling assembly comprises the first circuit board and the second circuit board. The first circuit board is electrically connected with the single batteries of the first battery pack. The second circuit board is electrically connected with the single batteries of the second battery pack.

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