Method and device for capacity degradation prediction of lithium-ion battery

    公开(公告)号:US11959970B2

    公开(公告)日:2024-04-16

    申请号:US18300116

    申请日:2023-04-13

    IPC分类号: G01R31/387 G01R31/367

    CPC分类号: G01R31/387 G01R31/367

    摘要: One or more embodiments of the present specification provide a method and device for capacity degradation prediction of a lithium-ion battery. The method comprises the following steps: acquiring an original battery discharge capacity; decomposing the original battery discharge capacity through a predetermined mode decomposition method to obtain battery discharge capacities composed of a plurality of different frequency signals; inputting the respective frequency signals into a pre-constructed capacity prediction model to obtain capacity prediction results corresponding to the respective frequency signals; selecting capacity prediction result that satisfies a predetermined relevance condition corresponding to the respective frequency signals; and reconstructing the finally predicted battery discharge capacity according to the capacity prediction result that satisfies the predetermined relevance condition.

    Temperature-sensitive automatic rapid gas generation fire extinguishing device

    公开(公告)号:US11951343B1

    公开(公告)日:2024-04-09

    申请号:US18520483

    申请日:2023-11-27

    IPC分类号: A62C35/02 A62C35/10

    CPC分类号: A62C35/023 A62C35/10

    摘要: A temperature-sensitive automatic rapid gas generation fire extinguishing device is provided, including a box body; a plurality of heat absorption fire extinguishing units are placed on an inner side wall of the box body, and a first trigger unit is arranged between one of the heat absorption fire extinguishing units close to the first baffle and the inner side wall of the box body; the one of the heat absorption fire extinguishing units triggers the first baffle to move down through the first trigger unit, and a relatively closed space is formed in the box body; a plurality of gas generation fire extinguishing units are placed on an inner side wall of the box body, and a second trigger unit is arranged between one of the gas generation fire extinguishing units close to the second baffle and the inner side wall of the box body.