US 7,405,017 B2
	Bipolar plate
Raimund Strobel, Ulm (Germany); Kurt Hohe, Langenau (Germany); Kai Lemke, Ulm (Germany); Dieter Grafl, Ulm (Germany); Dominique Tasch, Neu-Ulm (Germany); and Markus Lemm, Blaustein (Germany)
Assigned to REINZ-Dichtungs - GmbH, Neu-Ulm (Germany)
Appl. No. 10/502,039 PCT Filed Jan. 22, 2003, PCT No. PCT/EP03/00623 § 371(c)(1), (2), (4) Date Jan. 24, 2005, PCT Pub. No. WO03/063264, PCT Pub. Date Jul. 31, 2003.
Claims priority of application No. 102 03 612 (DE), filed on Jan. 23, 2002.
Prior Publication US 2005/0118486 A1, Jun. 02, 2005
Int. Cl. H01M 8/04 (2006.01); H01M 8/02 (2006.01)

U.S. Cl. 429—34  [429/38; 429/39]

12 Claims

1. A bipolar plate for fuel cell stacks which comprises two outer surfaces electrically connected to one another, for the electrical contacting as well as for the discharge and supply of gases and/or fluids to surfaces of fuel cells, said surfaces being adjacent to the outer surfaces, characterized in that the bipolar plate comprises a frame which is open in a central region as well as an inner pad arranged in the central region, wherein the frame and the inner part are elastically coupled to one another utilizing an elastomer.