Air tightness detection equipment for lower box body of power battery

The invention belongs to the technical field of power battery testing, and particularly relates to air tightness detection equipment for a lower box body of a power battery, the air tightness detection equipment comprises a main body, supporting legs are mounted on the lower surface of the main body, a bottom plate is mounted on the supporting legs, and a controller is mounted on the bottom plate; a mounting frame is mounted on the upper surface of the main body, an electric push rod is mounted on the mounting frame, a sensor is mounted on the electric push rod, and the sensor is a common infrared sensor; a detection cavity is formed in the upper surface of the main body, a to-be-detected box body is placed in the detection cavity, and the lower end of the electric push rod tightly presses the to-be-detected box body on the detection cavity; a hot-air blower is mounted on the bottom plate, and the hot-air blower is communicated with the detection cavity through a pipeline; the device is simple in structure, c