BATTERY PACK

The present application relates to a technical filed of energy storage devices, and particularly relates to a battery pack. The battery pack includes: a plurality of battery modules, in which each battery module includes a plurality of unit batteries electrically connected to each other, and output electrodes are arranged at joints of each of the battery modules in a height direction (Z) and in a length direction (X); a flexible electrical connection member, electrically connected to the output electrode, and arranged at an end of the battery module in the length direction (X); a fixing member, arranged on an outside of the flexible electrical connection member to fix the flexible electrical connection member on the battery module. In the present application, the fixing member can fix the flexible electrical connection member on the battery module by means of arranging the fixing member on the outside of the flexible electrical connection member. Thus, the reliable fixing of the flexible electrical connection member can be realized, and the deformation of the flexible electrical connection member can be limited, so that the problem of easy deformation of the current flexible electrical connection member can be solved.