Battery module, battery pack and energy storage device

Abstract

The utility model provides a battery module, a battery pack and an energy storage device. The battery module comprises a plurality of battery cells, end plates arranged at the two ends of the arrangement direction of the plurality of battery cells, and a binding belt used for binding the plurality of battery cells and the end plates; the end plate comprises a base plate and a plurality of flanging structures; the substrate and the plurality of battery cells are stacked in the arrangement direction of the plurality of battery cells, the plurality of flanging structures are arranged around the edge of the substrate and cover the periphery of the substrate in an annular structure, and the plurality of flanging structures are bent from the edge of the substrate and protrude out of the surface, deviating from the battery cells, of the substrate. The die-casting aluminum end plate can solve the problems that an existing die-casting aluminum end plate is high in raw material cost and complex in process; the problems that an existing metal plate end plate is low in structural strength and poor in restrained expansion effect are solved. The problems of uneven stress, short creepage distance, poor insulation capability and the like are solved by adding foam, a plastic part and a ceramic composite belt and reasonably designing the position and the size, so that the service life of the battery is prolonged, and the safety of the battery is improved.

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