Patent ID: 7901823
Filing Date: 2011-03-08
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a cell in which an anode and a cathode are provided on either side of a solid polymer electrolyte membrane, and a reaction gas passage is formed on a first surface of a separator disposed at each outer side of the pair of the anode and the cathode, and a first cooling liquid passage, separated from the reaction gas passage, is formed on a second surface of the separator, wherein: the cell has a generation plane for outputting power; a second cooling liquid passage, independent of the first cooling liquid passage, is formed on a part of the generation plane; and cooling liquid, heated by an external heating device which is provided outside the cell, is suppliable to the second cooling liquid passage, wherein the first cooling liquid passage comprises first and second parallel passages formed on first and second portions of the second surface of the separator, respectively, and the second cooling liquid passage is provided between the first and second parallel passages, an inlet of the first parallel passage is separate from an inlet of the second parallel passage and an outlet of the first parallel passage is separate from an outlet of the second parallel passage; and a controller determining whether the cooling liquid heated by the external heating device is supplied to the second cooling liquid passage and controlling the heating device to generate a quantity of heat by which refreezing of generated water in the fuel cell is avoided.