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    Battery system, battery pack handling system and electrolyte evacuation and refill station
    13.
    发明授权
    Battery system, battery pack handling system and electrolyte evacuation and refill station 有权

    公开(公告)号：US11955666B2

    公开(公告)日：2024-04-09

    申请号：US17156782

    申请日：2021-01-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Ruchira Dharmasena ,  Meinan He ,  Mei Cai

    IPC: H01M50/609 ,  H01M50/103 ,  H01M50/204

    CPC classification number: H01M50/609 ,  H01M50/103 ,  H01M50/204

    Abstract: A battery system includes an enclosure having opposed first and second major walls, a perimetral wall connecting the first and second major walls along respective perimeters thereof, and an interior defined by the first and second major walls and the perimetral wall, wherein the enclosure is configured for containing an anode assembly, a cathode assembly and an electrolyte within the interior. A longitudinal embossment is formed in the perimetral wall extending outward from the interior and extending along opposed adjacent portions of the first and second perimeters. A wall port is defined in the perimetral wall in fluid communication with the interior, wherein the wall port is configured for permitting flow of the electrolyte therethrough into and out of the interior. First and second electrodes extend through the perimetral wall and are configured for electrical connection with the anode assembly and cathode assembly, respectively.

    BATTERY SYSTEM, BATTERY PACK HANDLING SYSTEM AND ELECTROLYTE EVACUATION AND REFILL STATION
    17.
    发明申请
    BATTERY SYSTEM, BATTERY PACK HANDLING SYSTEM AND ELECTROLYTE EVACUATION AND REFILL STATION 有权

    公开(公告)号：US20220238972A1

    公开(公告)日：2022-07-28

    申请号：US17156782

    申请日：2021-01-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Ruchira Dharmasena ,  Meinan He ,  Mei Cai

    IPC: H01M50/609 ,  H01M50/103 ,  H01M50/204

    Abstract: A battery system includes an enclosure having opposed first and second major walls, a perimetral wall connecting the first and second major walls along respective perimeters thereof, and an interior defined by the first and second major walls and the perimetral wall, wherein the enclosure is configured for containing an anode assembly, a cathode assembly and an electrolyte within the interior. A longitudinal embossment is formed in the perimetral wall extending outward from the interior and extending along opposed adjacent portions of the first and second perimeters. A wall port is defined in the perimetral wall in fluid communication with the interior, wherein the wall port is configured for permitting flow of the electrolyte therethrough into and out of the interior. First and second electrodes extend through the perimetral wall and are configured for electrical connection with the anode assembly and cathode assembly, respectively.

    Electrochemical cell and method of manufacturing
    18.
    发明授权
    Electrochemical cell and method of manufacturing 有权

    公开(公告)号：US11309539B2

    公开(公告)日：2022-04-19

    申请号：US16131875

    申请日：2018-09-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Fang Dai ,  Meinan He ,  Shuru Chen ,  Mei Cai

    IPC: H01M4/36 ,  H01M10/05 ,  H01M4/48 ,  H01M4/58 ,  H01M4/38 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/054 ,  H01M4/134 ,  H01M4/66 ,  H01M4/74 ,  H01M10/052 ,  H01M4/80

    Abstract: An electrochemical cell comprising an alkali metal negative electrode layer physically and chemically bonded to a surface of a negative electrode current collector via an intermediate metal chalcogenide layer. The intermediate metal chalcogenide layer may comprise a metal oxide, a metal sulfide, a metal selenide, or a combination thereof. The intermediate metal chalcogenide layer may be formed on the surface of the negative electrode current collector by exposing the surface to a chalcogen or a chalcogen donor compound. Then, the alkali metal negative electrode layer may be formed on the surface of the negative electrode current collector over the intermediate metal chalcogenide layer by contacting at least a portion of the metal chalcogenide layer with a source of sodium or potassium to form a layer of sodium or potassium on the surface of the negative electrode current collector over the metal chalcogenide layer.

    CONTROLLING INTERNAL BATTERY PRESSURE BUILDUP IN RECHARGABLE BATTERIES WITH A CRUSHABLE INSERT LAYER
    19.
    发明申请
    CONTROLLING INTERNAL BATTERY PRESSURE BUILDUP IN RECHARGABLE BATTERIES WITH A CRUSHABLE INSERT LAYER 有权

    公开(公告)号：US20250015412A1

    公开(公告)日：2025-01-09

    申请号：US18347091

    申请日：2023-07-05

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Meng Jiang ,  Yongjie Zhu ,  Louis G. Hector, JR. ,  Meinan He ,  Srikanth Arisetty ,  Mei Cai

    IPC: H01M50/242 ,  B60L50/64 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/231 ,  H01M50/249

    Abstract: Excessive expansion of rechargeable batteries during recharging is a significant concern since the uncontrolled buildup of high internal battery pressures from expansion inside a confined space can lead to separator membrane failure and/or thermal runaway of a battery cell. A crushable foam or honeycomb insert layer is placed inside of a rigid battery fixture to automatically limit the progressive buildup of internal battery pressure due to charging-induced expansion of the battery cell during recharging. The crushable insert layer is included as part of the rigid battery fixture. Aluminum honeycomb cores and porous aluminum metal foam materials have a significant amount of crushability over a very wide range of compressive strains. Alternatively, a porous metal foam or metal honeycomb material may be infused with a liquid polymer (e.g., silicone, rubber, EDPM, or polyurethane) to enhance the mechanical properties of the polymer-infused metal foam or honeycomb metal/polymer composite material.

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