公开(公告)号：EP4525171A1

公开(公告)日：2025-03-19

申请号：EP23803011.8

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  CHEN, Chong ,  CHEN, Guangan ,  LIU, Xufeng ,  WANG, Cuicui

IPC: H01M50/342

Abstract: Provided is a vehicle (600), having a battery pack (500). The battery pack (500) comprises a battery (300) or a battery module (400). The battery module (400) comprises the battery (300). The battery (300) comprises an explosion-proof valve (200). The explosion-proof valve (200) comprises an explosion-proof valve body (100). The explosion-proof valve body (100) is provided with score grooves (11), and the score grooves (11) comprise two first score grooves (111), two second score grooves (112), and one third score groove (113). One end of each of the two first score grooves (111) and one end of each of the two second score grooves (112) are respectively connected to two ends of the third score groove (113). The other ends of the two first score grooves (111) extend in a direction away from each other, and the other ends of the second score grooves (112) extend in a direction away from each other. The explosion-proof valve body (100) comprises an opening area (10). In the depth direction of the score grooves, the outer edge of the orthographic projection of the opening area (10) is a predetermined opening boundary (131), and the area of the orthographic projection of the opening area (10) is (I), wherein S≥80 mm 2 , c≥4 mm, and α≥30°.

公开(公告)号：EP4546532A1

公开(公告)日：2025-04-30

申请号：EP23826567.2

申请日：2023-06-21

Applicant: BYD Company Limited

Inventor： LIAO, Zhengyuan ,  WANG, Xiaolong ,  LU, Zhipei ,  LIU, Xufeng ,  SUN, Zenan

IPC: H01M50/258 ,  H01M50/30 ,  H01M50/358 ,  H01M50/204 ,  H01M50/244 ,  H01M50/249 ,  B60L50/64

Abstract: A battery pack and a vehicle. The battery pack comprises a sealing cover, a tray, a plurality of battery cells, insulating layers, and at least one connecting sheet, wherein the tray is connected to the sealing cover to define an accommodating cavity; the plurality of battery cells are arranged in the accommodating cavity; the side of each battery cell facing away from the sealing cover is provided with a first explosion-proof valve; each insulating layer is arranged on the side of the battery cell facing away from the sealing cover; the connecting sheet is arranged on the insulating layer; the battery cells are electrically connected by means of the connecting sheet; and each insulating layer is provided with a gas emission portion configured to make the outside be in communication with the first explosion-proof valve.

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 )