Zinc-air secondary battery
    2.
    发明授权

    公开(公告)号:US10938072B2

    公开(公告)日:2021-03-02

    申请号:US16077585

    申请日:2017-02-08

    摘要: A zinc-air secondary battery includes an air positive electrode part, a separator, and a zinc gel negative electrode part in a case, provided with an electrolyte flow part for inducing electrolyte to flow inside the zinc gel negative electrode part. The oxygen discharging efficiency that remains in the zinc gel negative electrode part and is not smoothly discharged to the outside can be improved, and thus charging performance of the zinc-air secondary battery can be improved.

    Method and system for replacing electrolyte solution of secondary battery

    公开(公告)号:US10833309B2

    公开(公告)日:2020-11-10

    申请号:US15806755

    申请日:2017-11-08

    IPC分类号: H01M2/18 H01M2/38 H01M2/40

    摘要: A secondary battery in which convection in an electrolyte solution occurs easily is provided. A secondary battery whose electrolyte solution can be replaced is provided. A nonaqueous secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte solution, and the separator includes grooves capable of making convection in the electrolyte solution occur easily. The nonaqueous secondary battery has at least one expected installation direction, and the grooves in the separator are preferably formed so as to be perpendicular to an expected installation surface. The exterior body includes a first opening for injection of an inert gas into the exterior body and a second opening for expelling or injection of an electrolyte solution from or into the exterior body. An electrolyte solution replacement apparatus has a function of injecting the inert gas through the first opening and expelling or injecting the electrolyte solution through the second opening.

    Rechargeable battery having a wall element and wall element therefor

    公开(公告)号:US10290836B2

    公开(公告)日:2019-05-14

    申请号:US13879595

    申请日:2011-10-14

    IPC分类号: H01M2/02 H01M2/38 H01M10/42

    摘要: The invention relates to a rechargeable battery comprising a battery housing which has a cell cavity, or several cell cavities separated by dividing walls. One or more of the cell cavities have at least one respective positive and negative electrode, separated from each other by at least one separator and a liquid electrolyte. One or more of the cell cavities have a respective wall element, which partitions the respective cell cavity into at least two volume chambers which communicate with one another. At least in the lower regions of the volume chambers, a communicating connection between the volume chambers for the liquid electrolytes is provided and in the upper region of the volume chambers, a pressure compensation connection between the volume chambers for assuring equal air pressure in the volume chambers communicating chambers is provided. Also disclosed is a wall element for such a rechargeable battery, and a battery housing.

    Redox flow battery with anisotropic electrode layer

    公开(公告)号:US09761890B2

    公开(公告)日:2017-09-12

    申请号:US15113376

    申请日:2014-12-09

    摘要: A redox flow battery having reduced internal resistance is provided. The redox flow battery includes a membrane, a bipolar plate, an electrode disposed between the membrane and the bipolar plate, an inlet port for supplying an electrolyte to the electrode, and an outlet port for discharging the electrolyte from the electrode, and performs a charge-discharge reaction by allowing the electrolyte to flow in the electrode. The electrode includes an anisotropic electrode layer having different permeabilities between a direction A1 on a plane of the electrode and a direction A2 orthogonal to the direction A1 on the plane of the electrode. In the anisotropic electrode layer, a permeability K1 in the direction A1 is larger than a permeability K2 in the direction A2. The electrode is disposed such that the direction A1 is substantially parallel to a main flow direction of the electrolyte in the electrode, the main flow direction being determined on the basis of a positional relationship between the inlet port and the outlet port and a shape of a surface of the bipolar plate on the electrode side.