Energy storage device

Abstract

To provide an energy storage device that can suppress the promotion of heat generation within the case. [Solution] The energy storage device 1 comprises a plurality of energy storage modules 101, a case, a pressure relief valve 600, and a breathing membrane 700. Each of the plurality of energy storage modules 101 has an exhaust port h for discharging gas. The distance D1 between the breathing membrane 700 and the pressure relief valve 600 is smaller than the distance D2 between the exhaust port h and the pressure relief valve 600.

Claims

[Claim 1] Multiple energy storage modules arranged in a line along the first direction, A case for housing the aforementioned multiple energy storage modules, A pressure relief valve is provided in the aforementioned case for releasing the pressure inside the case, The case is provided with a breathing membrane that adjusts the pressure inside the case by allowing the passage of gas between the inside and outside of the case, The pressure relief valve and the breathing membrane are provided in the case at locations that are spaced apart from each other in the first direction. At least one of the plurality of energy storage modules has a plurality of energy storage cells, At least one of the plurality of energy storage cells has a safety valve for discharging gas. An energy storage device in which the distance between the breathing membrane and the pressure relief valve is smaller than the distance between the safety valve and the pressure relief valve.

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