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公开(公告)号：US20250011948A1
公开(公告)日：2025-01-09
申请号：US18347731
申请日：2023-07-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yeh-Hung Lai
Abstract: An electrolyzer stack, an electrolysis system, and a method for operating an electrolysis system are provided. In one example, the electrolyzer stack includes a cell block that includes a plurality of cells configured to receive and convert water to form a hydrogen product stream. A bladder is in fluid communication with the hydrogen product stream and is operatively disposed to apply a force to the cell block when pressurized by a portion of the hydrogen product stream.
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公开(公告)号：US20230291020A1
公开(公告)日：2023-09-14
申请号：US17691400
申请日：2022-03-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yun Cai , Xingcheng Xiao , Yeh-Hung Lai , Taylor R. Garrick , Leng Mao
IPC: H01M10/48 , H01M10/0525 , H01M4/70
CPC classification number: H01M10/486 , H01M10/0525 , H01M4/70
Abstract: A battery cell monitoring system provides a direct measurement of electrical and heat distributions in a battery cell, using segmented elements that are in direct contact with an electrode of the battery. The battery cell monitoring system provides distributed local through-plane current, temperature, and pressure measurements with power for operation of the battery being supplied via battery tabs. An embodiment of a battery cell monitoring system includes a two-dimensional current collector array, a two-dimensional temperature sensor array, a plurality of pressure sensors, and a plurality of reference electrodes interspersed within the current collector array. The current collector array, the temperature sensor array, the pressure sensors, and the reference electrodes are arranged on a printed circuit board. The current collector array is configured to have direct physical contact with an electrode of the battery cell. The current collector array is disposed within a container of the battery cell.
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公开(公告)号：US10388979B2
公开(公告)日：2019-08-20
申请号：US15586514
申请日：2017-05-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xi Yang , Liang Xi , Jeffrey A Rock , Siguang Xu , Yeh-Hung Lai
IPC: H01M8/2404 , H01M8/242 , H01M8/1018
Abstract: A method for assembling a fuel cell stack for a vehicle is provided wherein the method includes the steps of: (1) providing a batch of fuel cells having varying active area thicknesses among each fuel cell; (2) measuring an active area thickness for each fuel cell in the batch of fuel cells and sorting each fuel cell in the batch of fuel cells into one of a first group, a second group, and a third group based on the active area thickness for each fuel cell; (3) assembling a target number of fuel cells to a target height from at least one of the first, second and third groups onto a first end plate; and (4) affixing a second end plate to the target number of fuel cells and the first end plate thereby creating a fuel cell stack.
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公开(公告)号：US20180323464A1
公开(公告)日：2018-11-08
申请号：US15586522
申请日：2017-05-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xi Yang , Liang Xi , Jeffrey A. Rock , Siguang Xu , Yeh-Hung Lai
IPC: H01M8/2475
CPC classification number: H01M8/2475 , H01M8/242 , H01M2008/1095 , H01M2250/20
Abstract: 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.
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公开(公告)号：US20180323463A1
公开(公告)日：2018-11-08
申请号：US15586514
申请日：2017-05-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xi Yang , Liang Xi , Jeffrey A. Rock , Siguang Xu , Yeh-Hung Lai
IPC: H01M8/2404
CPC classification number: H01M8/2404 , H01M8/242 , H01M2008/1095
Abstract: A method for assembling a fuel cell stack for a vehicle is provided wherein the method includes the steps of: (1) providing a batch of fuel cells having varying active area thicknesses among each fuel cell; (2) measuring an active area thickness for each fuel cell in the batch of fuel cells and sorting each fuel cell in the batch of fuel cells into one of a first group, a second group, and a third group based on the active area thickness for each fuel cell; (3) assembling a target number of fuel cells to a target height from at least one of the first, second and third groups onto a first end plate; and (4) affixing a second end plate to the target number of fuel cells and the first end plate thereby creating a fuel cell stack.
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6.发明授权
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.
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公开(公告)号：US10218018B2
公开(公告)日：2019-02-26
申请号：US15144936
申请日：2016-05-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC , Honda Motor Co., Ltd.
Inventor： Manish Sinha , Pinkhas A. Rapaport , Hiromichi Yoshida , Shohei Toyota , Yeh-Hung Lai
IPC: H01M8/04992 , H01M8/04537 , H01M8/04746 , H01M8/04291 , H01M8/04858
Abstract: A fuel cell stack includes a plurality of cell groups and a controller wherein each cell group comprises a plurality of fuel cells and a group sensor which measures one or more electrical characteristics of the respective cell group. The controller comprises one or more processors and memory and is communicatively coupled to each group sensor. The one or more processors execute machine readable instructions to compare a measured electrical characteristic of each cell group to one or more thresholds stored in memory, and indicate the need for diagnostics of the fuel cell stack when the comparison indicates a non-systemic event.
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公开(公告)号：US20180123141A1
公开(公告)日：2018-05-03
申请号：US15337377
申请日：2016-10-28
Applicant: GM Global Technology Operations LLC
Inventor： Liang Xi , Richard D. Blakeley , Xi Yang , Siguang Xu , Ivan D. Chapman , Yeh-Hung Lai
IPC: H01M8/026 , H01M8/0254 , H01M8/24
CPC classification number: H01M8/026 , H01M8/0254
Abstract: A number of variations may include a product that may include a fuel cell stack assembly that may include at least one bipolar plate that may include at least one raised bead and at least one raised limiter.
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公开(公告)号：US20170324106A1
公开(公告)日：2017-11-09
申请号：US15144936
申请日：2016-05-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC , Honda Motor Co., Ltd.
Inventor： Manish Sinha , Pinkhas A. Rapaport , Hiromichi Yoshida , Shohei Toyota , Yeh-Hung Lai
IPC: H01M8/04992 , H01M8/04537 , H01M8/04746
CPC classification number: H01M8/04992 , H01M8/04291 , H01M8/04559 , H01M8/04649 , H01M8/04753 , H01M8/04952 , H01M2250/20 , Y02T90/32
Abstract: A fuel cell stack includes a plurality of cell groups and a controller wherein each cell group comprises a plurality of fuel cells and a group sensor which measures one or more electrical characteristics of the respective cell group. The controller comprises one or more processors and memory and is communicatively coupled to each group sensor. The one or more processors execute machine readable instructions to compare a measured electrical characteristic of each cell group to one or more thresholds stored in memory, and indicate the need for diagnostics of the fuel cell stack when the comparison indicates a non-systemic event.
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公开(公告)号：US20170229719A1
公开(公告)日：2017-08-10
申请号：US15019152
申请日：2016-02-09
Applicant: GM Global Technology Operations LLC
Inventor： Yeh-Hung Lai , Anita Luong
IPC: H01M8/0286 , H01M8/0247 , H01M8/241 , H01M8/2475 , H01M8/242 , H01M8/0284 , H01M8/1004 , H01M8/1007 , H01M8/2457 , H01M8/0258 , H01M8/2483
CPC classification number: H01M8/0286 , H01M8/0247 , H01M8/0258 , H01M8/0267 , H01M8/0284 , H01M8/0297 , H01M8/1004 , H01M8/1007 , H01M8/2404 , H01M8/241 , H01M8/242 , H01M8/2457 , H01M8/2475 , H01M8/2483 , H01M2008/1095 , H01M2250/20 , H01M2300/0082 , Y02E60/521 , Y02T90/32
Abstract: A fuel cell stack with a bipolar plate assembly and a method of assembling a fuel cell stack such that reactant or coolant leakage is reduced. Bipolar plates within the system include reactant channels and coolant channels that are fluidly coupled to inlet and outlet flowpaths, all of which are formed within a coolant-engaging or reactant-engaging surface of the plate. One or more thin or low aspect-ratio microseals are also formed on a metal bead that is integrally-formed on a surface of the plate and is used to help reduce leakage by maintaining fluid isolation of the reactants and coolant as they flow through their respective channels and flowpaths that are defined between adjacently-placed plates. By delaying the activation of the adhesive bond formed between the microseal and an adjacent surface within the fuel cell until after the aligned cell assemblies have been compressively supported in a stack housing, the ability of the microseal and its adjacent surface to avoid reactant or coolant leakage is enhanced.
