Power battery with high heat dissipation performance

The utility model discloses a power battery with high heat dissipation performance, which relates to the field of thermal management of power batteries and is simple in structure, a sealed cavity is formed by a bottom sealant, a battery, a top sealant and a box body, and cooling liquid is introduced into a circulating liquid flow channel from a circulating liquid inlet and outlet of the battery box body so as to be introduced into the sealed cavity, so that the heat dissipation performance of the power battery is improved. The temperature control module is used for controlling the temperature of battery cells; when the battery cell is used, the middle area generates the maximum heat, the upper part and the lower part of the battery cell of the battery pack are sealed by the sealant, the circulating liquid is arranged in the middle to directly cool the battery cell, and the heat generated by the upper part and the lower part of the battery cell can be transferred into the circulating liquid through the sealant