ENERGY STORAGE DEVICE

Disclosed is an energy storage device. The energy storage device comprises: a box, multiple battery modules, a cooling assembly, and a heat insulation support. The multiple battery modules are accommodated in the box; the cooling assembly is arranged between the battery modules; the heat insulation support is fixedly connected to the box, and a fixing groove for fixing at least one cooling assembly is formed in the heat insulation support. According to the energy storage device in embodiments of the present application, by providing the heat insulation support, heat exchange between the cooling assembly and the box can be reduced while fixing the cooling assembly; the cooling effect and cooling efficiency of the cooling assembly can be improved, and moreover, the local area temperature of the box can be prevented from being too low so as to avoid a condensation phenomenon in the box, the safety is improved, and the local temperature of the battery modules can be prevented from being too low, thereby improving