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    POWER BATTERY PACK AND VEHICLE
    12.
    发明公开
    POWER BATTERY PACK AND VEHICLE 审中-公开

    公开(公告)号：EP3905377A1

    公开(公告)日：2021-11-03

    申请号：EP19904418.1

    申请日：2019-07-25

    Applicant: BYD Company Limited

    Inventor： REN, Zhenghua ,  LU, Zhipei ,  GUO, Kun ,  PENG, Qingbo ,  ZHU, Yan

    IPC: H01M2/12 ,  H01M2/10

    Abstract: The present invention relates to a power battery pack (400) and a vehicle. The power battery pack (400) includes a battery tray (100) and several battery cells (200) disposed on the battery tray (100). Each of the battery cells (200) has a cell anti-explosion valve (201). The battery tray (100) includes a tray body. At least a part of the tray body is formed therein with an air passage. The tray body is provided with several inlet vents (31) and at least one exhaust vent. At least part of the inlet vents (31) and the cell anti-explosion valves (201) are disposed opposite to each other and correspond one-to-one to each other.

    HEATING SYSTEM FOR POWER BATTERY, AND ELECTRIC VEHICLE
    14.
    发明公开
    HEATING SYSTEM FOR POWER BATTERY, AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4517934A1

    公开(公告)日：2025-03-05

    申请号：EP23795558.8

    申请日：2023-04-27

    Applicant: BYD Company Limited

    Inventor： ZHANG, Ke ,  GUO, Zizhu ,  PAN, Yi ,  ZHU, Yan ,  SUN, Huajun

    IPC: H01M10/615 ,  H01M10/625 ,  H01M10/637 ,  B60L58/27

    Abstract: The present disclosure provides a heating system for a power battery, and an electric vehicle. The power battery comprises a first cell group and a second cell group connected in series. The heating system comprises an inverter, an AC motor, a first controller, and a plurality of connection lines. The midpoints of three bridge arms of the inverter are connected to the head ends of three-phase coils of the AC motor in a one-to-one correspondence. The tail ends of the AC motor are connected together to form a neutral point. First ends of the connection lines are connected to the neutral point of the AC motor. Second ends of the connection lines are connected to a connection point between the first cell group and the second cell group. The first controller is configured to input a drive signal to the inverter. The first cell group, the second cell group, the inverter, the AC motor, and the connection lines form an AC self-heating loop.

    POWER BATTERY PACK AND ELECTRIC VEHICLE
    19.
    发明公开
    POWER BATTERY PACK AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4329057A2

    公开(公告)日：2024-02-28

    申请号：EP23220824.9

    申请日：2019-06-21

    Applicant: BYD Company Limited

    Inventor： HE, Long ,  SUN, Huajun ,  JIANG, Wenfeng ,  LU, Zhipei ,  ZHENG, Weixin ,  TANG, Jianglong ,  ZHU, Yan ,  WANG, Xinyue ,  HE, Kefeng

    IPC: H01M50/103

    Abstract: The present invention basically relates to a power battery pack, configured to provide power for an electric vehicle and comprising: a pack body; a plurality of cells, disposed in the pack body, the cell having a length L 0 , a width H 0 , and a thickness D 0 , wherein L 0 >H 0 ≥D 0 ; when the power battery pack is placed on the electric vehicle, a length direction of the cell extends along a width direction or a length direction of the electric vehicle; when the length direction of the cell extends along the width direction of the electric vehicle, the length L 0 of the cell and a size W of a vehicle body of the electric vehicle in the width direction meet: 46%≤L 0 /W≤76%; or when the length direction of the cell extends along the length direction of the electric vehicle, the length L 0 of the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L 0 /X≤76%, at least one of the cells, comprising a battery body, the battery body having a length L, a width H, a thickness D, and a volume V, the length L of the battery body being greater than the width H, and the width H of the battery body being greater than the thickness D, wherein the battery body meets: 400mm≤L≤2500mm and H/V=0.0001 mm -2 to 0.00015 mm -2 .

    LITHIUM ION BATTERY, POWER BATTERY MODULE, BATTERY PACK, ELECTRIC VEHICLE, AND ENERGY STORAGE APPARATUS
    20.
    发明公开
    LITHIUM ION BATTERY, POWER BATTERY MODULE, BATTERY PACK, ELECTRIC VEHICLE, AND ENERGY STORAGE APPARATUS 审中-公开

    公开(公告)号：EP4160753A1

    公开(公告)日：2023-04-05

    申请号：EP21814514.2

    申请日：2021-05-24

    Applicant: BYD Company Limited

    Inventor： SUN, Huajun ,  WANG, Gaowu ,  LIN, Wensheng ,  ZHAO, Ling ,  ZHU, Yan

    IPC: H01M4/66 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0587

    Abstract: The present disclosure provides a lithium ion battery, a power battery module, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer loaded on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets: 1 ≤ d 2 ρ C p × 1.12 nL n + 1 W ≤ 500 .

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