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    RADIAL MIXING MANIFOLD
    41.
    发明公开
    RADIAL MIXING MANIFOLD 审中-公开

    公开(公告)号：US20240170696A1

    公开(公告)日：2024-05-23

    申请号：US18496627

    申请日：2023-10-27

    Applicant: ESS TECH, INC.

    Inventor： Joseph M. Cooley

    IPC: H01M8/04276 ,  H01M8/18

    CPC classification number: H01M8/04276 ,  H01M8/188

    Abstract: Systems and methods are provided for a redox flow batter system comprising a cylindrical electrolyte chamber fluidly coupled to a redox flow battery cell and at least one radial mixing manifold fluidly coupled to the cylindrical electrolyte chamber. The radial mixing manifold includes a flange configured to receive electrolyte from the redox flow battery cell and a manifold configured to mix and distribute the electrolyte within the cylindrical electrolyte chamber. The manifold includes a plurality of openings, at least one of which is a bottom opening, and extends from a first inner edge of the cylindrical electrolyte chamber to a second inner edge, lower than the first inner edge, of the cylindrical electrolyte chamber.

    Alternative low cost electrodes for hybrid flow batteries
    44.
    发明授权
    Alternative low cost electrodes for hybrid flow batteries 有权

    公开(公告)号：US11855312B2

    公开(公告)日：2023-12-26

    申请号：US17653620

    申请日：2022-03-04

    Applicant: ESS TECH, INC.

    Inventor： Craig E. Evans ,  Sean Casey ,  Yang Song

    IPC: H01M8/0258 ,  H01M8/18 ,  H01M8/0239 ,  H01M4/88 ,  H01M8/20 ,  H01M8/0245

    CPC classification number: H01M8/0258 ,  H01M4/8803 ,  H01M4/8817 ,  H01M4/8828 ,  H01M8/0239 ,  H01M8/0245 ,  H01M8/188 ,  H01M8/20 ,  Y02E60/50

    Abstract: A redox flow battery may include: a membrane interposed between a first electrode positioned at a first side of the membrane and a second electrode positioned at a second side of the membrane opposite to the first side; a first flow field plate comprising a plurality of positive flow field ribs, each of the plurality of positive flow field ribs contacting the first electrode at first supporting regions on the first side; and the second electrode, including an electrode spacer positioned between the membrane and a second flow field plate, the electrode spacer comprising a plurality of main ribs, each of the plurality of main ribs contacting the second flow field plate at second supporting regions on the second side, each of the second supporting regions aligned opposite to one of the plurality of first supporting regions. As such, a current density distribution at a plating surface may be reduced.

    Systems and methods for electrode assembly for redox flow battery system
    45.
    发明授权
    Systems and methods for electrode assembly for redox flow battery system 有权

    公开(公告)号：US11817609B2

    公开(公告)日：2023-11-14

    申请号：US17655492

    申请日：2022-03-18

    Applicant: ESS Tech, Inc.

    Inventor： Thiago Groberg

    IPC: H01M8/18 ,  H01M8/2483 ,  H01M8/0438 ,  H01M8/1004

    CPC classification number: H01M8/188 ,  H01M8/0438 ,  H01M8/1004 ,  H01M8/2483

    Abstract: Systems and methods are provided for assembling and operating an electrode assembly for a redox flow battery system. In one example, the electrode assembly may include an inflatable housing in which a negative electrode spacer and a positive electrode may be positioned, wherein the inflatable housing may inflate responsive to applied internal pressure during operation of the redox flow battery system. In some examples, the electrode assembly may be assembled via roll-to-roll processing and may be mechanically and fluidically coupled to electrode assemblies of like configuration. In this way, tolerance stacking may be decreased, processing may be simplified, and costs may be reduced relative to molding-based processes for electrode assembly manufacturing.

    HYBRID REDOX FUEL CELL SYSTEM
    50.
    发明申请
    HYBRID REDOX FUEL CELL SYSTEM 有权

    公开(公告)号：US20230089941A1

    公开(公告)日：2023-03-23

    申请号：US17929623

    申请日：2022-09-02

    Applicant: ESS TECH, INC.

    Inventor： Yang Song ,  Craig Evans

    IPC: H01M8/18 ,  H01M8/22 ,  H01M8/06

    Abstract: A hybrid redox fuel cell system includes a hybrid redox fuel cell including an anode side through which a reductant is flowed and a cathode side through which liquid electrolyte is flowed, and a trickle bed reactor including a catalyst bed fluidly connected to the cathode side of the hybrid redox fuel cell. Furthermore, the liquid electrolyte includes a metal ion at a higher oxidation state and the metal ion at a lower oxidation state, and power is generated at the hybrid redox fuel cell by way of reducing the metal ion at the higher oxidation state to the lower oxidation state at the cathode side while oxidizing the reductant at the anode side.

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