Patent ID: 7823277
Filing Date: 2010-11-02
Classification: B23K,B25B,H01M,Y02E,Y10S,Y10T

Abstract:
1. A method for preparing a bipolar plate assembly for a fuel cell stack, comprising the steps of: providing a first unipolar plate having a first active area with a plurality of channels formed on a first inner surface thereof and a first perimeter flange; providing a second unipolar plate having a second active area with a plurality of lands formed on a second inner surface thereof and a second perimeter flange; aligning the first unipolar plate and the second unipolar plate to dispose the first active area adjacent the second active area; applying a first pressure directly to the first and second active areas to pre-nest the first unipolar plate and the second unipolar plate; and joining the first perimeter flange of the first unipolar plate to the second perimeter flange of the second unipolar plate.