System and method for operating a rechargeable electrochemical cell or battery

    公开(公告)号:US11990589B2

    公开(公告)日:2024-05-21

    申请号:US17849814

    申请日:2022-06-27

    CPC classification number: H01M10/441 H01M10/425 H02J7/0019 H01M2010/4271

    Abstract: An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to control the cell such that, for at least a portion of a charge cycle, the cell is charged at a charging rate or current that is lower than a discharging rate or current of at least a portion of a previous discharge cycle. An electrochemical cell management method. An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to induce a discharge of the cell before and/or after a charging step of the cell. An electrochemical cell management method. An electrochemical cell management system comprising an electrochemical cell and at least one controller configured to: monitor at least one characteristic of the cell and, based on the at least one characteristic of the cell, induce a discharge and/or control a charging rate or current of the cell.

    Compression systems for batteries

    公开(公告)号:US11824228B2

    公开(公告)日:2023-11-21

    申请号:US16952187

    申请日:2020-11-19

    Abstract: Batteries including electrochemical cells, associated components, and arrangements thereof are generally described. In some aspects, batteries with housings that undergo relatively little expansion and contraction even in cases where electrochemical cells in the battery undergo a relatively high degree of expansion and contraction during charging and discharging are provided. Batteries configured to apply relatively high magnitudes and uniform force to electrochemical cells in the battery, while in some cases having high energy densities and a relatively low pack burden, are also provided. In certain aspects, arrangements of electrochemical cells and associated components are generally described. In some aspects, thermally conductive solid articles that can be used for aligning components of the battery are described. In some aspects, thermally insulating and compressible components for battery packs are generally described.

    ELECTROCHEMICAL CELL CLAMPS AND RELATED METHODS

    公开(公告)号:US20230275256A1

    公开(公告)日:2023-08-31

    申请号:US18017493

    申请日:2021-08-02

    CPC classification number: H01M10/0481 H01M10/0566 H01M50/183 H01M2220/20

    Abstract: Clamps for electrochemical cells and related systems and methods are generally described. In some embodiments, a clamp system can apply a compressive clamp force to reinforce a contact between first and second portions of a container of an electrochemical cell (e.g., to reinforce a seal of an electrochemical cell pouch). In some embodiments, a clamp system can apply a compressive clamp force to reinforce electronic communication between an electrode tab and an electrode tab extension. Application of such compressive clamp forces via a clamp may assist with maintaining integrity of contacts (e.g., seals, electrode tab connections) under challenging conditions such as during testing of the electrochemical cell (e.g., at elevated temperatures) and/or during shipping.

    Additives for electrochemical cells

    公开(公告)号:US11569531B2

    公开(公告)日:2023-01-31

    申请号:US17366539

    申请日:2021-07-02

    Abstract: Articles and methods including additives in electrochemical cells, are generally provided. As described herein, such electrochemical cells may comprise an anode, a cathode, an electrolyte, and optionally a separator. In some embodiments, at least one of the anode, the cathode, the electrolyte, and/or the optional separator may comprise an additive and/or additive precursor. For instance, in some cases, the electrochemical cell comprises an electrolyte and an additive and/or additive precursor that is soluble with and/or is present in the electrolyte. In some embodiments, the additive precursor comprises a disulfide bond. In certain embodiments, the additive is a carbon disulfide salt. In some cases, the electrolyte may comprise a nitrate.

    INTEGRATED BATTERY ELECTRODE AND SEPARATOR

    公开(公告)号:US20220352521A1

    公开(公告)日:2022-11-03

    申请号:US17730792

    申请日:2022-04-27

    Abstract: Some aspects of the disclosure are related to lithium batteries, and more specifically, to integrated battery electrode and separator. In some embodiments, an electrochemical cell comprises a single integrated unit comprising insulating layer, current collectors, electroactive material layers, separators, and the like. Methods of manufacturing of the integrated battery unit are disclosed herein. Some embodiments of the disclosure are also directed to an integrated anode-free electrochemical cell that lacks an anode or anode electroactive material layer. In some such embodiments, methods directed to electrical storage and use of such an anode-free electrochemical cell are disclosed herein.

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