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：EP4057440A1

公开(公告)日：2022-09-14

申请号：EP20890941.6

申请日：2020-11-19

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  ZHU, Yan ,  WANG, Xinyue

IPC: H01M50/636 ,  H01M10/04

Abstract: This application provides a battery (100), which comprises a housing (1) and a plurality of accommodating cavities (11) located in the housing (1), wherein two adjacent accommodating cavities (11) are isolated by a partition plate, an electrode core assembly (2) comprising at least one electrode core is arranged in the accommodating cavity (11), and a plurality of electrode core assemblies (2) are sequentially arranged along a first direction and connected in series. A liquid guide hole and a gas guide hole are provided on the partition plate, wherein the liquid guide hole and the gas guide hole are used to bring two adjacent accommodating cavities (11) at both sides of the partition plate into communication. The battery (100) also includes a blocking mechanism that enables the liquid guide hole to be in a settable state comprising an open state and a closed state.

公开(公告)号：EP3907775A1

公开(公告)日：2021-11-10

申请号：EP19908966.5

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: H01M2/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6568 ,  B60L50/64

Abstract: Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body; and a plurality of cells, directly arranged in the pack body. The cell extends from a first side of the pack body to a second side of the pack body, and the first side and the second side are disposed opposite to each other. The first side of the pack body is provided with a first side wall, the second side of the pack body is provided with a second side wall, an end of the cell is supported by the first side wall, and the other end of the cell is supported by the second side wall.

公开(公告)号：EP3770995A1

公开(公告)日：2021-01-27

申请号：EP19772632.6

申请日：2019-01-22

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  CHENG, Han ,  YANG, Keli ,  JIANG, Luxia ,  PENG, Lingyi

IPC: H01M2/26

Abstract: A cell, a battery module, a power battery, and an electric vehicle are provided. The cell according to an embodiment of the present disclosure includes: a housing; a cover plate located at an end of the housing; a pole core located in the housing and having an electrode tab; an inner spacer including a bottom plate, a connecting plate, and a support plate, where the bottom plate is disposed on a surface of the pole core facing the cover plate, one end of the connecting plate is connected to a side edge of the bottom plate and is formed in a bent shape with a side edge of the bottom plate, the other end of the connecting plate is connected to the support plate and is formed in a bent shape with the support plate, and the support plate extends toward a direction away from the bottom plate, a part of the electrode tab extending from a side surface of the support plate facing the pole core to a side surface away from the pole core; and a conductive terminal disposed on the cover plate and electrically connected to the electrode tab.

公开(公告)号：EP4329058A3

公开(公告)日：2025-05-21

申请号：EP23220825.6

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: H01M50/209 ,  H01M50/249

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 Lo, a width Ho, 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 D/V=0.0000065 mm -2 to 0.00002 mm -2 .

公开(公告)号：EP4525196A1

公开(公告)日：2025-03-19

申请号：EP23803015.9

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  YUAN, Wansong ,  LI, Kai ,  WANG, Cuicui

IPC: H01M50/543 ,  H01M50/172 ,  H01M50/188 ,  H01M50/184 ,  H01M50/531

Abstract: A battery, a battery pack, and a vehicle. The battery comprises: a battery casing; lead-out pieces and conductive pillars, the lead-out pieces being arranged in the battery casing, via holes allowing the conductive pillars to pass through being formed in the battery casing, the inner end of each conductive pillar being connected to a lead-out piece, and the outer end of each conductive pillar extending out of the battery casing; and sealing rings, the sealing rings being in sealed connection between the conductive pillars and the battery casing, the sealing rings being constructed to be elastic pieces, the initial size of each sealing ring in the axial direction thereof being d1, the size of each sealing ring compressed in the axial direction thereof being d2, and d1 and d2 meeting: 0.5≤d2/d1≤0.9.

公开(公告)号：EP4525172A1

公开(公告)日：2025-03-19

申请号：EP23803013.4

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  WANG, Xinyue ,  YUAN, Wansong ,  ZHU, Yan ,  DUAN, Pingan

IPC: H01M50/342 ,  H01M50/249

Abstract: A vehicle, having a battery pack. The battery pack comprises a battery or a battery module. The battery comprises a battery shell and an explosion-proof valve. The explosion-proof valve is arranged on the battery shell. The volume of the battery is V, and the unit of V is mm 3 . The explosion-proof valve is provided with a notch groove, and the explosion-proof valve has an opening region. In a depth direction of the notch groove, an outer edge of the orthographic projection of the opening region is a predetermined opening boundary, the area of the orthographic projection of the opening region is S, and the unit of S is mm 2 . S and V satisfy 0.3mm -1 ≤(5000 X S)/V≤6mm -1 .

公开(公告)号：EP4525170A1

公开(公告)日：2025-03-19

申请号：EP23802997.9

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： ZHU, Yan ,  SUN, Zenan ,  LIU, Xufeng ,  WANG, Xinyue

IPC: H01M50/342

Abstract: A vehicle provided with a battery pack, the battery pack comprising a battery or a battery module, the battery comprising an explosion-proof valve, the explosion-proof valve comprising an explosion-proof valve body, an edge of the explosion-proof valve body being provided with a connection segment, the explosion-proof valve body being provided with a notched groove, the explosion-proof valve body being provided with an opening area, and the opening area being located on the radial inner side of the connection segment. In the depth direction of the notched groove, the shape of the orthographic projection of the explosion-proof valve body and the shape of the orthographic projection of the opening area are both non-circular, 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 opening , the area of the orthographic projection of the connection segment is S connection , the area of the orthographic projection of the explosion-proof valve body is S total , and S opening , S connection and S total meet: 10% connection /(S total -S opening )

公开(公告)号：EP4525169A1

公开(公告)日：2025-03-19

申请号：EP23802994.6

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  CHEN, Guangan ,  GAO, Xin ,  WANG, Cuicui ,  SUN, Zenan

IPC: H01M50/342 ,  H01M50/258 ,  H01M50/249

Abstract: A vehicle, comprising a battery pack. The battery pack comprises a battery or a battery module. The battery comprises an explosion-proof valve. The explosion-proof valve comprises an explosion-proof valve body. The explosion-proof valve body has an opening region, and the opening region is provided with an explosion-proof notched groove at the edge thereof. The explosion-proof notched groove comprises a first straight line section, two arc sections and at least one second straight line section. Two ends of the first straight line section are connected to the two arc sections, respectively; at least one of the ends of the second straight line section is connected to the arc section; and the first straight line section is arranged parallel to the second straight line section. In a depth direction of the explosion-proof notched groove, an orthographic projection of the opening region is in an oblong shape. An outer edge of the orthographic projection of the opening region is a predetermined opening boundary, and the area of the orthographic projection of the opening region is S, where S=a×b+π×b 2 /4, S≥80mm 2 , and b≥6mm.

公开(公告)号：EP4525168A1

公开(公告)日：2025-03-19

申请号：EP23802981.3

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： CHENG, Han ,  WANG, Xinyue ,  CHEN, Chong

IPC: H01M50/342 ,  H01M50/367 ,  H01M50/249 ,  H01M50/588 ,  H01M50/593

Abstract: A battery cell (1), a battery pack (2) and a vehicle (4). The battery cell (1) comprises: a shell (100), which is provided with an inner cavity (110), a first side wall (120) and a second side wall (130), wherein the second side wall (130) is provided with an explosion-proof hole (131); the second side wall (130) supports a first bottom support (500) and a second bottom support (600), the first bottom support (500) and the second bottom support (600) are arranged in a spaced manner and define a first air channel (510), and the explosion-proof hole (131) is in communication with the inner cavity (110) by means of the first air channel (510); a terminal post (200), which is arranged on a side wall of the shell (100) other than the second side wall (130); and an explosion-proof valve (300), which is used for covering the explosion-proof hole (131). The first bottom support (500) and the second bottom support (600) jointly support a pole core (400), such that the pole core (400) is arranged spaced apart from the explosion-proof hole (131).