Power battery and electric vehicle

The utility model belongs to the technical field of electric vehicles, and discloses a power battery and an electric vehicle. The power battery comprises a box body and a tray, the tray is used for mounting a battery cell, the tray is arranged in the box body, the bottom surface of the tray and the box body define a pressure relief cavity, and a through hole communicated with the pressure relief cavity is formed in the tray; an exhaust channel is arranged around the periphery of the box body, one end of the exhaust channel is provided with an inlet communicated with the pressure relief cavity, and the other end of the exhaust channel is provided with an outlet capable of being communicated with the outside of the box body. By means of the exhaust channel surrounding the periphery of the box body, the exhaust path of gas generated after thermal runaway of the battery cell can be prolonged, the heat exchange area of the gas and the box body is increased, the heat exchange time of the gas and the box body is pro