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公开(公告)号：US20230187760A1
公开(公告)日：2023-06-15
申请号：US18105703
申请日：2023-02-03
Inventor： Hui CAO , Kai CAO , Yingqi CHEN , Wei LIU , Dandan CHEN , Xiaofeng YANG , Min HOU , Xianfeng YU , Chan LIU , Zhaoyu YU
IPC: H01M50/264 , H01M50/209 , H01M50/289
CPC classification number: H01M50/264 , H01M50/209 , H01M50/289 , H01M2220/20
Abstract: A battery module comprises a fixing component including a plurality of insertion posts, the insertion posts being sandwiched between a plurality of the cells. Further, the cell is provided with a fillet structure on the edges and the insertion post is connected to the fillet structure. According to the battery module, a plurality of removable reinforcement points are provided by a plurality of insertion posts, which do not affect the stacking density of the cells in the battery pack, and increasing the mechanical connection strength of the battery module. The removable design of the battery module and insertion posts solves the maintenance problem of the integrated battery pack and improves the safety of the battery module, featuring high structural strength, integrity and stability. A battery pack can include the battery module and an electric vehicle can include the battery pack.
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公开(公告)号：US20240178461A1
公开(公告)日：2024-05-30
申请号：US18521935
申请日：2023-11-28
Inventor： Hui CAO , Dandan CHEN , Min HOU , Xuxiang WANG , Wei LIU
IPC: H01M10/0587 , H01M4/58 , H01M10/42
CPC classification number: H01M10/0587 , H01M4/5825 , H01M10/42 , H01M10/0525
Abstract: A battery cell, a battery, and an electric device relating to the field of battery. The battery cell comprises a positive electrode plate, wherein the positive electrode plate comprises a positive electrode inner ring, a positive electrode current collector, and a positive electrode outer ring arranged sequentially from inside to outside; a negative electrode plate, wherein the negative electrode plate comprises a negative electrode inner ring, a negative electrode current collector, and a negative electrode outer ring arranged sequentially from inside to outside; and a separator, wherein the separator is located between the positive electrode plate and the negative electrode plate, and the positive electrode plate, the separator, and the negative electrode plate together form the battery cell; wherein, a surface density of the positive electrode inner ring is less than that of the positive electrode outer ring, and/or a surface density of the negative electrode inner ring is less than that of the negative electrode outer ring. This can reduce the expansion rate of the negative electrode plate, making it difficult for the negative electrode inner ring to fracture and fail at the position with large curvature, thereby improving the service life of the wound battery during the (high rate) charging and discharging process.
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公开(公告)号：US20240105933A1
公开(公告)日：2024-03-28
申请号：US18199157
申请日：2023-05-18
Inventor： Hui CAO , Yi YAO , Min HOU , Chan LIU , Yingying GUO , Dandan CHEN
IPC: H01M4/525 , C01G53/00 , H01M4/131 , H01M4/505 , H01M10/0525
CPC classification number: H01M4/525 , C01G53/50 , H01M4/131 , H01M4/505 , H01M10/0525 , H01M2004/028
Abstract: The present disclosure discloses a high-safety ternary positive electrode material and a method for preparing the same; wherein the ternary positive electrode material has a chemical composition of Lia(NixCoyMn1-x-y)1-bMbO2-cAc, wherein 0.75≤a≤1.2, 0.75≤x 0, 0≤b≤0.01, 0≤c≤0.2, M is one or more selected from the group consisting of Al, Zr, Ti, Y, Sr, W and Mg, and A is one or more selected from the group consisting of S, F and N; and CMn−(1−x−y)≥0.07; CCo−y≥0.05; 0≤[CMn−(1−x−y)]/(CCo−y)≤2.0. The ternary positive electrode material of the present disclosure is a high-nickel single crystal material with gradient concentration; it has the advantages of high capacity and high thermal stability, and the preparation method is simple, and is suitable for large-scale production.
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