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    DIRECT CURRENT FAST CHARGE METHOD FOR CHARGING BATTERY CELLS INCLUDING LITHIUM SILICON OXIDE (LSO)
    41.
    发明公开
    DIRECT CURRENT FAST CHARGE METHOD FOR CHARGING BATTERY CELLS INCLUDING LITHIUM SILICON OXIDE (LSO) 审中-公开

    公开(公告)号：US20240305122A1

    公开(公告)日：2024-09-12

    申请号：US18361253

    申请日：2023-07-28

    Applicant: GM Global Technology Operations LLC

    Inventor： Dewen KONG ,  Si Chen ,  Haijing Liu ,  Mark W. Verbrugge

    IPC: H02J7/00

    CPC classification number: H02J7/007182 ,  H02J7/0048 ,  H02J7/007194

    Abstract: A method includes determining a state of charge (SOC) of the battery and charging the battery using a plurality of charging steps. If the SOC of the battery is less than a predetermined SOC, the battery is charged at a first charge rate (C-rate) in a range from 3 C to 4 C in a first step until the SOC of the battery increases by a first ΔSOC. After the first ΔSOC, the battery is charged in the constant current mode at a second C-rate of 3−(1/n) C in a second step to (2+n−1)th step until the SOC of the battery increases by a second ΔSOC, where n is an integer greater than zero. After the second ΔSOC, the battery is charged in the constant current mode at a third C- rate of 2+ (1/n) C in a (2+n)th step until the SOC of the battery increases by a third ΔSOC.

    CAPACITOR-ASSISTED BATTERY CELL
    46.
    发明公开
    CAPACITOR-ASSISTED BATTERY CELL 审中-公开

    公开(公告)号：US20230291037A1

    公开(公告)日：2023-09-14

    申请号：US17732618

    申请日：2022-04-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen KONG ,  Dave G. Rich ,  Xiaochao Que ,  Haijing Liu

    IPC: H01M16/00 ,  H01M4/133 ,  H01M4/62 ,  H01M10/056 ,  H01M4/587 ,  H01M10/0525

    CPC classification number: H01M16/00 ,  H01M4/133 ,  H01M4/623 ,  H01M4/625 ,  H01M10/056 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021

    Abstract: A pouch-type, capacitor-assisted battery cell includes: N negative electrodes, where N is an integer greater than one, each of the N negative electrodes includes a first current collector, first particulate electrode material, and a first tab; P positive electrodes, where: P-M ones of the P positive electrodes include a second current collector, second particulate electrode material, and a second tab, M ones of the P positive electrodes include a third current collector, third particulate electrode material including activated carbon (AC) arranged on opposite sides of the third current collector, and a third tab, and P=N−1 and M=2; separators arranged between the N negative electrodes and the P positive electrodes; and a pouch enclosure surrounding the N negative electrodes, the P positive electrodes and the separators; where the M ones of the P positive electrodes are located approximately equidistant from a center of the P positive electrodes.

    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION
    47.
    发明申请
    ANODE-FREE SOLID-STATE BATTERY AND METHOD OF BATTERY FABRICATION 有权

    公开(公告)号：US20230063684A1

    公开(公告)日：2023-03-02

    申请号：US17458903

    申请日：2021-08-27

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Yong Lu ,  Haijing Liu ,  Qili Su ,  Xiaochao Que ,  Mark W. Verbrugge

    IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

    Abstract: An anode-free solid-state battery includes a cathode layer having transient anode elements and a bare current collector devoid of non-transitory anode material and configured to accept thereon the transient anode elements. The battery also includes a solid-state electrolyte layer defining voids and arranged between the current collector and the cathode layer. The battery additionally includes a gel situated within the solid-state electrolyte and cathode layers, to permeate the electrolyte voids and form a gelled solid-state electrolyte layer, coat the cathode layer, and facilitate ionic conduction of the anode elements between the cathode layer, the solid-state electrolyte layer, and the current collector. Charging the battery diffuses the anode elements from the cathode layer, via the gelled solid-state electrolyte layer, onto the current collector. Discharging the battery returns the anode elements, via the gelled solid-state electrolyte layer, to the cathode layer. A particular method is used to fabricate the anode-free solid-state battery.

    Self-heating battery
    49.
    发明授权
    Self-heating battery 有权

    公开(公告)号：US11411261B2

    公开(公告)日：2022-08-09

    申请号：US16487914

    申请日：2017-03-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhiqiang Yu ,  Haijing Liu ,  Xiaochao Que ,  Dave G. Rich ,  Saad Hasan ,  Meiyuan Wu

    IPC: H01M10/615 ,  H01M4/04 ,  H01M4/66 ,  H01M4/75 ,  H01M4/80 ,  H01M10/0587 ,  H01G11/06 ,  H01M10/0525

    Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

    ASYMMETRIC HYBRID ELECTRODE FOR CAPACITOR-ASSISTED BATTERY
    50.
    发明申请
    ASYMMETRIC HYBRID ELECTRODE FOR CAPACITOR-ASSISTED BATTERY 有权

    公开(公告)号：US20220181635A1

    公开(公告)日：2022-06-09

    申请号：US17542169

    申请日：2021-12-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Haijing Liu

    IPC: H01M4/62 ,  H01M4/04

    Abstract: An asymmetric hybrid electrode for a capacitor-assisted battery includes a current and first and second electroactive portions. The first electroactive portion is on a first surface of the current collector. The first electroactive portion includes a first battery layer. The first battery layer includes a first battery electroactive material and a first binder. The second electroactive portion is on a second surface of the current collector opposite the first surface. The second electroactive portion includes a second battery layer and a capacitive layer. The second battery layer includes a second battery electroactive material and a second binder. The capacitive layer includes a capacitive electroactive material and a third binder. The first and second electroactive portions are asymmetric. The first and second battery electroactive materials are both positive electroactive materials or both negative electroactive materials. The asymmetric hybrid electrode has a capacitor hybridization ratio of 0.01-1%.

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