ENERGY STORAGE DEVICE

An energy storage device is provided in the disclosure. The energy storage device includes a case, multiple battery modules, at least one cooling assembly, and at least one heat insulation support. The multiple battery modules are accommodated in the case. The at least one cooling assembly is arranged between the multiple battery modules. The at least one heat insulation support is fixedly connected to the case. The at least one heat insulation support each defines a fixing groove configured to fix one of the at least one cooling assembly. According to the energy storage device in embodiments of the disclosure, by arranging the heat insulation support, heat exchange between the cooling assembly and the case may be reduced while the cooling assembly is fixed. On one hand, cooling effect and cooling efficiency of the cooling assembly may be improved. On the other hand, temperature in certain areas of the case will not be too low, and condensation on the case may be avoided. Therefore, the safety is improved, temperature in certain areas of battery modules will be prevented from getting too low, and temperature in multiple battery cells in a single battery module and temperature in multiple battery modules may be more even.