Energy storage device

The utility model provides an energy storage device, and relates to the technical field of energy storage. The energy storage device comprises a battery cluster and an inflation device. The battery cluster is provided with a plurality of battery packs; and the box body of the battery pack is provided with an anti-explosion valve for air flow to pass through. The inflation device comprises an air source and a pipeline assembly, and the pipeline assembly is connected to the air source and connected into the box body. And the gas source is used for filling incombustible gas into the box body through the pipeline assembly. The energy storage device provided by the utility model can improve the technical problem that thermal runaway and thermal spread of the battery cannot be fundamentally prevented in the prior art. 本实用新型提供了一种储能装置，涉及储能技术领域。该储能装置包括电池簇和充气装置。电池簇具有多个电池包；电池包的箱体上具有用于供气流通过的防爆阀。充气装置包括气源和管路组件，管路组件连接于气源，且管路组件接入箱体；气源用于通过管路组件向箱体中充入不可燃性气体。本实用新型提供的储能装置可以改善现有技术中不能从根本上阻止电池发生热失控和热蔓延的技术问题。