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    Method of manufacturing a fuel cell stack
    1.
    发明授权
    Method of manufacturing a fuel cell stack 有权

    公开(公告)号：US10601063B2

    公开(公告)日：2020-03-24

    申请号：US15475734

    申请日：2017-03-31

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Jeffrey A. Rock ,  Liang Xi ,  Yeh-Hung Lai ,  Xi Yang

    IPC分类号： H01M8/2404 ,  G06F17/50 ,  H01M8/0247 ,  H01M8/0276 ,  H01M8/0202 ,  H01M8/1018 ,  H01M8/242

    摘要： A method of manufacturing a fuel cell stack includes compressing a stack of bipolar plates with a variable applied load a feature non-deformed displacement distance, which is measured from an initial height of the stack of bipolar plates. A first applied load at a first displacement distance and a second applied load at a second displacement distance are sensed. The first displacement distance and the second displacement distance are each less than the feature non-deformed displacement distance. A best fit curve, passing through the first applied load at the first displacement distance and the second applied load at the second displacement distance, is then determined. A final displacement distance, measured from the initial height, is calculated from the best fit curve for a target applied load. The stack of bipolar plates is then compressed to the final displacement distance measured from the initial height.

    Fuel cell stack assembly
    3.
    发明授权
    Fuel cell stack assembly 有权

    公开(公告)号：US10468707B2

    公开(公告)日：2019-11-05

    申请号：US15586522

    申请日：2017-05-04

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xi Yang ,  Liang Xi ,  Jeffrey A Rock ,  Siguang Xu ,  Yeh-Hung Lai

    IPC分类号： H01M8/2475 ,  H01M8/242 ,  H01M8/1018

    摘要： A fuel cell stack assembly for a vehicle is provided which includes a first end plate, a second end plate; and a first plurality of fuel cells disposed between the first and second end plates. The first plurality of fuel cells may define a repeating pattern of a thick fuel cell adjacent to a thin fuel cell. Each fuel cell in the first plurality of fuel cells having an active area thickness. The fuel cell stack assembly of the present disclosure may further include a second plurality of nominal fuel cells.

    METAL BEAD SEAL TUNNEL ARRANGEMENT
    5.
    发明申请
    METAL BEAD SEAL TUNNEL ARRANGEMENT 审中-公开

    公开(公告)号：US20180131016A1

    公开(公告)日：2018-05-10

    申请号：US15344655

    申请日：2016-11-07

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xi Yang ,  Siguang Xu ,  Liang Xi

    IPC分类号： H01M8/0258 ,  H01M8/0282

    CPC分类号： H01M8/0258 ,  H01M8/0282 ,  H01M8/0297 ,  H01M8/2483 ,  H01M2008/1095

    摘要： A fuel cell includes a first bipolar plate, a second bipolar plate and a gas diffusion layer. The first bipolar plate defines a first metal bead seal and a first plate embossment in fluid communication with the first metal bead seal. The second bipolar plate defines a second metal bead seal and a second plate embossment in fluid communication with the second metal bead seal. The first plate embossment and the second plate embossment are offset from one another along the length of the first and second metal bead seals. The second metal bead seal is operatively configured to abut the first metal bead seal to form a joint between the first and second bipolar plate. The gas diffusion layer may be disposed between the first bipolar plate and the second bipolar plate.

    Reinforcement structure for bead seal in a plate assembly
    6.
    发明授权
    Reinforcement structure for bead seal in a plate assembly 有权

    公开(公告)号：US10522852B2

    公开(公告)日：2019-12-31

    申请号：US15425069

    申请日：2017-02-06

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  Honda Motor Co., Ltd.

    发明人： Xi Yang ,  Siguang Xu ,  Liang Xi ,  Richard D. Blakeley ,  Masaaki Sakano ,  Yu Tomana ,  Kentaro Ishida

    IPC分类号： H01M8/02 ,  H01M8/0276 ,  C25B9/00

    摘要： A plate assembly includes a first plate having a planar portion and a first bead seal formed therein. The first bead seal includes a first end surface spaced away from the planar portion. The first bead seal includes first and second opposing sides extending away from the first end surface and contiguous with the planar portion. The first bead seal includes a first reinforcement structure having a first plurality of walls each intersecting the first opposing side of the first bead seal. The first plate includes a second bead seal formed therein. The first bead seal and the second bead seal may be joined via the first reinforcement structure such that the first plurality of walls of the first reinforcement structure each intersect a third opposing side of the second bead seal.

    Bipolar plate for a fuel cell, and a method manufacturing the same
    7.
    发明授权
    Bipolar plate for a fuel cell, and a method manufacturing the same 有权

    公开(公告)号：US10388969B2

    公开(公告)日：2019-08-20

    申请号：US15298273

    申请日：2016-10-20

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Richard D. Blakeley ,  Xi Yang ,  Siguang Xu ,  Liang Xi

    IPC分类号： H01M8/0297 ,  H01M8/0206 ,  H01M8/0267

    摘要： A bipolar plate for a fuel cell includes a first plate having a first bead seal, and a second plate having a second bead seal. The first bead seal and the second bead seal are disposed opposite each other and extend along a centerline. An outer weld connects the first plate and the second plate together, and extends along an outer weld line. The outer weld line is laterally spaced an outer gap distance from an outer lateral edge of the first and second bead seals. The outer gap distance varies with a position along the centerline to control a stiffness of the bead seals. Positioning the weld line nearer the outer lateral edge increases the stiffness of the raised bead seals in low stiffness areas, whereas positioning the weld line farther from the lateral edge decreases the stiffness of the raised bead seals in high stiffness areas.

    Plate structure for a fuel cell
    8.
    发明授权
    Plate structure for a fuel cell 有权

    公开(公告)号：US10355289B2

    公开(公告)日：2019-07-16

    申请号：US15425074

    申请日：2017-02-06

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xi Yang ,  Richard D. Blakeley ,  Liang Xi ,  Siguang Xu

    IPC分类号： H01M8/0271 ,  H01M8/0286 ,  H01M8/0276 ,  H01M8/1018

    摘要： A plate structure includes a plate having a planar portion defining a datum plane. The plate includes a raised bead seal and a tunnel protruding away from the datum plane. The raised bead seal extends along a centerline laying on the datum plane. The tunnel extends along a path laying on the datum plane. The tunnel intersects the raised bead seal. The path and the centerline intersect to form a first intersection angle and an adjacent second intersection angle on the datum plane. The first intersection angle and the second intersection angle are supplementary angles. The first intersection angle is an acute angle, and the second intersection angle is an obtuse angle. The path and the centerline are arranged to form a specific value of the first intersection angle and the second intersection angle to control a stiffness of the raised bead seal.