公开(公告)号：US20140051005A1

公开(公告)日：2014-02-20

申请号：US14062729

申请日：2013-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yeh-Hung Lai ,  Pinkhas A. Rapaport ,  Po-Ya Abel Chuang ,  Wenbin Gu

IPC: H01M8/04

CPC classification number: H01M8/04201 ,  H01M8/023

Abstract: A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics. Also, the same diffusion media could be used in the end cells as the nominal cells, but the end cell diffusion media layers could be thinner than the nominal cell diffusion media layers. Further, a higher amount of pre-compression can be used for the diffusion media in the end cells.

Abstract translation: 一种燃料电池堆，其包括用于堆叠中的末端电池的气体扩散介质，其具有较少侵入到其他电池的端电池的流场通道，以便增加通过其中的流动通道的流速 相对于通过其他电池中的流动通道的流速来说，终端电池。 在末端电池中可以使用不同的扩散介质，而不是标称电池，其中末端电池扩散介质由于扩散介质特性而具有较少的通道入侵。 此外，相同的扩散介质可以在末端电池中用作标称电池，但是终端电池扩散介质层可以比标称电池扩散介质层更薄。 此外，更高量的预压缩可以用于端电池中的扩散介质。

公开(公告)号：US20240194923A1

公开(公告)日：2024-06-13

申请号：US18076829

申请日：2022-12-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ruichun Jiang ,  Wenbin Gu ,  Matthew J. Beutel

IPC: H01M8/242 ,  H01M8/1004 ,  H01M8/1044

CPC classification number: H01M8/242 ,  H01M8/1004 ,  H01M8/1044 ,  H01M2008/1095

Abstract: A system for a fuel-cell subgasket active area edge with through-plane proton conduction is provided. The system includes a fuel-cell membrane-subgasket assembly. The assembly includes an active area including a proton exchange membrane and a first portion of a transitional proton-conductive material attached to the proton exchange membrane. The assembly further includes a non-active subgasket boundary surrounding the active area, configured for preventing a flow of gaseous material and liquid material therethrough. The non-active subgasket boundary includes a non-conductive subgasket and a second portion of the transitional proton-conductive material attached to the subgasket.

公开(公告)号：US09831511B2

公开(公告)日：2017-11-28

申请号：US14062729

申请日：2013-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yeh-Hung Lai ,  Pinkhas A. Rapaport ,  Po-Ya Abel Chuang ,  Wenbin Gu

IPC: H01M8/04082 ,  H01M8/023

CPC classification number: H01M8/04201 ,  H01M8/023

Abstract: A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics. Also, the same diffusion media could be used in the end cells as the nominal cells, but the end cell diffusion media layers could be thinner than the nominal cell diffusion media layers. Further, a higher amount of pre-compression can be used for the diffusion media in the end cells.

公开(公告)号：US20250023071A1

公开(公告)日：2025-01-16

申请号：US18350126

申请日：2023-07-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anusorn Kongkanand ,  Paul T. Yu ,  Wenbin Gu

IPC: H01M8/04223 ,  H01M4/92 ,  H01M8/04119 ,  H01M8/04746 ,  H01M8/0668

Abstract: A fuel cell system and associated method of operation includes assembling a fuel cell stack including an exhaust valve, flowing a premixed gas containing carbon monoxide therethrough; and closing the exhaust valve, including prior to storage. Subsequently, the exhaust valve may be opened and a refresh operation may be executed to purge the carbon monoxide from the fuel cell stack.

公开(公告)号：US20190123364A1

公开(公告)日：2019-04-25

申请号：US15791798

申请日：2017-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mark F Mathias ,  Balasubramanian Lakshmanan ,  Wenbin Gu

IPC: H01M8/04119 ,  H01M8/1004 ,  H01M8/0202 ,  H01M8/04291

Abstract: The present disclosure provides an integrated fuel cell having a water vapor transfer region wherein the integrated fuel cell includes a first bipolar plate, a second bipolar plate, and a membrane electrode assembly (MEA) disposed between the first and second bipolar plates. The membrane electrode assembly further includes a water vapor transfer portion and at least one active area portion configured to generate electricity and provide a water byproduct upon facilitating a reaction involving an input stream containing hydrogen and an input stream containing oxygen.

公开(公告)号：US09853307B2

公开(公告)日：2017-12-26

申请号：US14062628

申请日：2013-10-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yeh-Hung Lai ,  Pinkhas A. Rapaport ,  Po-Ya Abel Chuang ,  Wenbin Gu

IPC: H01M8/04082 ,  H01M8/023

CPC classification number: H01M8/04201 ,  H01M8/023

Abstract: A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics. Also, the same diffusion media could be used in the end cells as the nominal cells, but the end cell diffusion media layers could be thinner than the nominal cell diffusion media layers. Further, a higher amount of pre-compression can be used for the diffusion media in the end cells.