公开(公告)号：EP4525173A1

公开(公告)日：2025-03-19

申请号：EP23803014.2

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  YUAN, Wansong ,  WANG, Xinyue ,  ZHU, Yan ,  DENG, Dongjun

IPC: H01M50/342 ,  H01M50/30

Abstract: A vehicle, which has a battery pack. The battery pack comprises a battery or a battery module. The battery pack comprises a battery shell and an anti-explosion valve. The anti-explosion valve is arranged on the battery shell, is provided with a notch groove, and has an opening area. In the depth direction of the notch groove, the outer edge of the orthographic projection of the opening area is a predetermined opening boundary; the area of the orthographic projection of the opening area is S 1 , the unit of S 1 being mm 2 ; and the battery capacity is A, the unit of A being Ah. When the positive electrode material of the battery is a compound having an olivine-type structure, S 1 and A satisfy: S 1 >0.5 A. When the positive electrode material of the battery contains a layered compound, S 1 and A satisfy: Si>1.2 A.

公开(公告)号：EP4102622A1

公开(公告)日：2022-12-14

申请号：EP21757504.2

申请日：2021-02-07

Applicant: BYD Company Limited

Inventor： YUAN, Wansong ,  ZOU, Xiangda ,  DENG, Dongjun ,  CHEN, Wenhui ,  ZHU, Yan

IPC: H01M50/107 ,  H01M10/625

Abstract: A battery case (100) is provided, including a plurality of side plates. A first side plate (110) has the largest area among the plurality of side plates, and at least one first side plate (110) includes a first portion (111) and a second portion (112). The first portion (111) is a curved surface concave toward inside of the battery case (100). A three-dimensional coordinate system is established in a first direction, a second direction, and a third direction, and the second direction is perpendicular to the first side plate. A curvature of the first portion is less than a curvature of an ellipsoid, the curvature of the ellipsoid is obtained from an ellipsoid function, and the ellipsoid function is: ((x-a)/i) 2 +((y-b)/j) 2 +((z-c)/k) 2 =1, where, a, b, c, i, j, and k are determined according to coordinates of at least four points that are different from each other, and x, y, and z are coordinates of the three directions of the ellipsoid function.

公开(公告)号：EP4068496A1

公开(公告)日：2022-10-05

申请号：EP20907650.4

申请日：2020-10-23

Applicant: BYD Company Limited

Inventor： LU, Peng ,  LU, Zhipei ,  WANG, Xinyue ,  DENG, Dongjun ,  ZHU, Yan

IPC: H01M50/572

Abstract: A cover plate assembly, a battery, a battery module, a power battery pack, and an electric vehicle are disclosed. The cover plate assembly includes a cover plate body (1), a first electrode terminal (2), a second electrode terminal, and a resistive coating (3). The second electrode terminal is insulatively connected with the cover plate body (1). The first electrode terminal (2) is electrically connected with the cover plate body (1) by the resistive coating (3). The resistive coating (3) includes a weak portion (331). When a current flowing through the resistive coating (3) is greater than a predetermined threshold, the weak portion (331) is melted to disconnect the cover plate body (1) from the first electrode terminal (2).

公开(公告)号：EP4485642A1

公开(公告)日：2025-01-01

申请号：EP23803020.9

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： YUAN, Wansong ,  WANG, Xinyue ,  DENG, Dongjun ,  CHEN, Chong

IPC: H01M50/172 ,  H01M50/184 ,  H01M50/533 ,  H01M50/552 ,  H01M50/562 ,  H01M50/593

Abstract: A battery (100), a battery pack (1000), and a vehicle (10000). The battery (100) comprises: a battery housing (110); an electrode core (120), lead-out sheets (141, 142) and conductive posts (131, 132). The electrode core (120) and the lead-out sheets (141, 142) are all arranged in the battery housing (110); the lead-out sheets (141, 142) are connnected to the electrode core (120); the conductive posts (131, 132) pass through the battery housing (110) so that the conductive posts (131, 132) are connected to the lead-out sheets (141, 142), wherein the relationship between the cross-sectional area s lead of the lead-out sheets (141, 142) and the capability C of the battery (100) is C/S lead ≤15, the unit of s lead is mm 2 , and the unit of C is Ah.

公开(公告)号：EP4175052A1

公开(公告)日：2023-05-03

申请号：EP21831990.3

申请日：2021-06-30

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  YUAN, Wansong ,  DENG, Dongjun ,  HE, Kefeng

IPC: H01M50/572 ,  H01M50/531

Abstract: A cell (10) and a battery are provided. The cell (10) includes a plate (1), a separator (2), a tab (3), and an insulating support portion (4). The tab (3) is connected with the plate (1). The insulating support portion (4) is arranged on an end of the plate (1) and supports the tab (3). The tab (3) extends through the insulating support portion (4) and extends outward.

公开(公告)号：EP4050709A1

公开(公告)日：2022-08-31

申请号：EP20890023.3

申请日：2020-11-18

Applicant: BYD Company Limited

Inventor： ZHU, Jianhua ,  ZHU, Yan ,  DENG, Dongjun

IPC: H01M50/112 ,  H01M50/10

Abstract: A battery, a battery module, a battery pack, and an electric vehicle. The battery includes a housing, end covers, partition plates, and a number of electrode core assemblies. The end covers are arranged on two opposite ends of the housing for sealing an internal space of the housing. The partition plates are spaced apart from each other in the housing for separating the internal space of the housing into a number of accommodating cavities successively arranged along a first direction. Each electrode core assembly is arranged in each accommodating cavity. The electrode core assembly includes at least one electrode core. The number of electrode core assemblies are successively arranged along the first direction and connected in series. The partition plate is provided with an electrolyte solution filling channel. The electrolyte solution filling channel is in communication with the accommodating cavity on at least one side of the partition plate, and is configured for electrolyte solution to be injected into the accommodating cavity from an outside of the battery. The electrolyte solution filling channel is in a closed state upon completion of the electrolyte solution filling, to prevent communication between the accommodating cavity and the outside of the battery. A through hole is provided at a position of the housing corresponding to the electrolyte solution filling channel on the partition plate.