Patent ID: 9614240
Date: 2017-04-04
CPC Classifications: B60L,H01M,Y02E

Claim:
1. A cooling system for a fuel cell comprising a main circuit and a secondary circuit for a heat-conveying fluid; the main circuit comprising a main circulation pump, a heat exchanger with the outside, an upstream conduit in fluid communication with cells of the fuel cell on one side of the fuel cell, and a downstream conduit in communication with the cells of the fuel cell on a second side of the fuel cell in order to return the heat conveying fluid from the fuel cell to the main pump; said secondary circuit comprising a secondary circulation device and said upstream and downstream conduits, said secondary circulation device bringing about an alternating circulation of the fluid and being connected in parallel to the main circuit on the upstream and downstream conduits, said cooling system further including one or more controlled valves operable to permit establishment of an independent operation of the main circuit or of the secondary circuit; wherein the secondary circulation device is a pump comprising a cylinder arranged in series in a conduit, the cylinder comprising a piston delimiting two chambers, activated by an alternating motion in order to displace the heat-conveying fluid of the secondary circuit with an alternating movement.