H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 2/16 (2006.01) H01M 8/00 (2006.01)
Patent
CA 2645535
The present invention provides a bipolar plate for a fuel cell having a novel configuration in which the draining function is improved, the operation is simplified, the resin contained therein is prevented from being decomposed and eluted, and the method for producing the same. The method for producing a bipolar plate for a fuel cell comprised of a composite material of carbon powders and a thermosetting resin, in which the method comprises the steps of compressing said composite material of the carbon powders and the thermosetting resin to provide a molded body by compression molding having a gas flow field groove for flowing a reactive gas formed on at least one of the surfaces thereof, wherein a punching die and a molding die opposed to each other being used and said composite material of the carbon powders and the thermosetting resin being received in a material receiving part of said molding die, wherein said punching die being approached relatively to said molding die; and irradiating an infrared laser beam toward the internal surface of said gas flow field groove while relatively moving the optical axis of said infrared laser beam to said molded body along said gas flow field groove, thereby applying infrared laser process to said internal surface of said gas flow field groove after the completion of said compressing step.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Seikoh Giken Co. Ltd.
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