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1.发明公开公开(公告)号：US20230187654A1
公开(公告)日：2023-06-15
申请号：US17548848
申请日：2021-12-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Teresa J. Rinker , Erik D. Huemiller , Vijay P. Saharan , Jesse M. Roy , Thomas J. Chapaton , Jeffrey A. Abell
IPC: H01M4/66
Abstract: The concepts described herein provide a hybrid metal/polymer current collector for a battery cell electrode that includes a collector body joined to a tab portion and encased in an electrically conductive overlay, and an associated method of manufacture. The tab portion is fabricated from a homogeneous electrically conductive material, the collector body is fabricated from a polymer, and the collector body is joined to the tab portion at a junction.
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公开(公告)号：US11688843B2
公开(公告)日：2023-06-27
申请号：US17007102
申请日：2020-08-31
Applicant: GM Global Technology Operations LLC
Inventor： Erik D. Huemiller , Nicholas P. Irish , Ryan C. Sekol , Dmitriy Bruder , Shaomao Xu , Jin Liu
IPC: H01M4/04 , H01M4/66 , H01M10/058 , H01M4/02
CPC classification number: H01M4/0435 , H01M4/0471 , H01M4/66 , H01M10/058 , H01M2004/021
Abstract: A method of making a calendered electrode for a battery cell comprises introducing a coated electrode having a first surface extending thereover. The coated electrode has a predetermined density of active materials for ion transport. The method further comprises selectively modifying the coated electrode by patterning the first surface to define a patterned electrode having a first portion and a second portion. After the step of selectively modifying, the method further comprises compressing the patterned electrode by calendering the first surface to provide the first portion having a first density of active materials and the second portion having a second density of active materials. The second density is greater than the first density to define the calendered electrode having a spatial variation of active material density.
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Patent Agency Ranking
公开(公告)号：US20220069273A1
公开(公告)日：2022-03-03
申请号：US17007102
申请日：2020-08-31
Applicant: GM Global Technology Operations LLC
Inventor： Erik D. Huemiller , Nicholas P. Irish , Ryan C. Sekol , Dmitrity Bruder , Shaomao Xu , Jin Liu
IPC: H01M4/04 , H01M4/66 , H01M10/058
Abstract: A method of making a calendered electrode for a battery cell comprises introducing a coated electrode having a first surface extending thereover. The coated electrode has a predetermined density of active materials for ion transport. The method further comprises selectively modifying the coated electrode by patterning the first surface to define a patterned electrode having a first portion and a second portion. After the step of selectively modifying, the method further comprises compressing the patterned electrode by calendering the first surface to provide the first portion having a first density of active materials and the second portion having a second density of active materials. The second density is greater than the first density to define the calendered electrode having a spatial variation of active material density.
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4.发明授权公开(公告)号：US12104258B2
公开(公告)日：2024-10-01
申请号：US17179547
申请日：2021-02-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael P. Balogh , Jin Liu , Ryan C. Sekol , Shaomao Xu , Erik D. Huemiller
IPC: B22D11/06 , C23C6/00 , H01M4/04 , H01M4/38 , H01M4/66 , H01M10/0525 , H01M10/44 , H01M4/1395
CPC classification number: C23C6/00 , H01M4/0404 , H01M4/0435 , H01M4/0485 , H01M4/382 , H01M4/667 , H01M10/0525 , H01M10/44 , H01M4/1395 , H01M2220/20
Abstract: Presented are lithium-metal electrodes for electrochemical devices, systems and methods for manufacturing lithium-metal foils, and vehicle battery packs containing battery cells with lithium-metal anodes. A method of melt spinning lithium-metal foils includes melting lithium (Li) metal stock in an actively heated vessel to form molten Li metal. Using pressurized gas, the molten Li metal is ejected through a slotted nozzle at the base of the vessel. The ejected molten Li metal is directly impinged onto an actively cooled and spinning quench wheel or a carrier sheet that is fed across a support roller underneath the vessel. The molten Li metal is cooled and solidified on the spinning wheel/carrier sheet to form a Li-metal foil. The carrier sheet may be a polymeric carrier film or a copper current collector foil. An optional protective film may be applied onto an exposed surface of the Li-metal foil opposite the carrier sheet.
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5.发明申请公开(公告)号：US20220267886A1
公开(公告)日：2022-08-25
申请号：US17179547
申请日：2021-02-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael P. Balogh , Jin Liu , Ryan C. Sekol , Shaomao Xu , Erik D. Huemiller
Abstract: Presented are lithium-metal electrodes for electrochemical devices, systems and methods for manufacturing lithium-metal foils, and vehicle battery packs containing battery cells with lithium-metal anodes. A method of melt spinning lithium-metal foils includes melting lithium (Li) metal stock in an actively heated vessel to form molten Li metal. Using pressurized gas, the molten Li metal is ejected through a slotted nozzle at the base of the vessel. The ejected molten Li metal is directly impinged onto an actively cooled and spinning quench wheel or a carrier sheet that is fed across a support roller underneath the vessel. The molten Li metal is cooled and solidified on the spinning wheel/carrier sheet to form a Li-metal foil. The carrier sheet may be a polymeric carrier film or a copper current collector foil. An optional protective film may be applied onto an exposed surface of the Li-metal foil opposite the carrier sheet.
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公开(公告)号：US11552284B2
公开(公告)日：2023-01-10
申请号：US17084037
申请日：2020-10-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Erik D. Huemiller
Abstract: A battery electrode includes an electrically conductive sheet and two or more coating layers of an ion transport medium stacked thereon. Each coating layer has a respective two-dimensional array of low porosity regions formed therein, with a remainder of each coating layer that is not the two-dimensional array of low porosity regions defining a respective network of interconnected high porosity regions. Each of the high porosity regions has a feature size D, and an intralayer pitch P is defined between adjacent ones of the high porosity regions of each coating layer, with each pair of adjacent two-dimensional arrays having a respective alignment error E therebetween. A respective first electrically conductive path is formed thereacross via the networks of high porosity regions when D≤E≤P, with a second electrically conductive path being formed across all of the coating layers via the networks of high porosity regions.
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公开(公告)号：US20220140353A1
公开(公告)日：2022-05-05
申请号：US17084037
申请日：2020-10-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Erik D. Huemiller
Abstract: A battery electrode includes an electrically conductive sheet and two or more coating layers of an ion transport medium stacked thereon. Each coating layer has a respective two-dimensional array of low porosity regions formed therein, with a remainder of each coating layer that is not the two-dimensional array of low porosity regions defining a respective network of interconnected high porosity regions. Each of the high porosity regions has a feature size D, and an intralayer pitch P is defined between adjacent ones of the high porosity regions of each coating layer, with each pair of adjacent two-dimensional arrays having a respective alignment error E therebetween. A respective first electrically conductive path is formed thereacross via the networks of high porosity regions when D≤E≤P, with a second electrically conductive path being formed across all of the coating layers via the networks of high porosity regions.
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