EPS emergency power supply with composite rapid cooling structure and cooling method

The invention discloses an EPS emergency power supply with a composite rapid cooling structure. The EPS emergency power supply comprises a shell, vent holes are formed in the bottom of the front surface of the shell in a penetrating manner, the rear side of the inner cavity of the shell is fixedly connected with a heat conducting plate, and the rear side of the heat conducting plate is fixedly connected with cooling fins. Through cooperative use of the water tank, the tank door, the controller, the water box, the fixed shell, an air inlet hole, an air outlet hole, cooling fins, a cooling fan, a first semiconductor chilling plate, a vertical pipe, a mist outlet pipe, an electromagnetic valve, a second semiconductor chilling plate, a heat conduction plate, a heat exchange pipe, a temperature sensor, an air guide hole and a submersible pump, the power supply has the advantage of combined type rapid cooling; the EPS emergency power supply solves the problems that an existing EPS emergency power supply generally o