METHOD FOR FORMING FLOW CHANNEL ON METAL BIPOLAR PLATE OF FUEL CELL

    公开(公告)号:US20220077474A1

    公开(公告)日:2022-03-10

    申请号:US17530063

    申请日:2021-11-18

    IPC分类号: H01M8/026 H01M8/0206

    摘要: A method for forming a flow channel on a metal bipolar plate of a fuel cell includes: pre-treating a metal polar plate; subjecting the metal polar plate to low-temperature heating; forming a flow channel on the metal polar plate by rolling; cutting an inlet and outlet for gas and cooling liquid on the metal polar plate; performing surface treatment on the metal polar plate; bonding two metal polar plates to form a metal bipolar plate; and trimming the metal bipolar plate. The flow channel is formed by two pre-forming and one truing, and design parameters of punches and dies of the rollers used are determined by calculation models.

    SPECIAL ROLLER MACHINE FOR METAL POLAR PLATE

    公开(公告)号:US20220055084A1

    公开(公告)日:2022-02-24

    申请号:US17516908

    申请日:2021-11-02

    IPC分类号: B21B13/02

    摘要: A special roller machine for a metal polar plate. A box body is a square with a circular through hole in the middle part. Upper and lower pressing rollers are mounted in the circular through hole; the upper and lower pressing rollers are mounted in grooves formed in the lower sides of upper and lower sector rotating bodies through bearing seats and are connected with upper and lower rotating blocks respectively; the rotating blocks are symmetrically arranged and are connected with upper and lower servo electric cylinders through connecting rod mechanisms respectively, then the pressing rollers are finely adjusted; four identical arch-shaped plates are mounted on the inner surface of the circular through hole for locating the rotating blocks; and main transmission is implemented in such a way that a servo motor drives the lower pressing roller to move through a safety coupling, a reduction gearbox and a cross coupling.