公开(公告)号：EP4525174A1

公开(公告)日：2025-03-19

申请号：EP23802992.0

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： YUAN, Wansong ,  WANG, Xinyue ,  CHEN, Chong ,  DUAN, Pingan ,  ZHANG, Da

IPC: H01M50/367 ,  H01M50/342

Abstract: A battery cell (1), a battery pack (2) and a vehicle (4). The battery cell (1) comprises: a housing (100), which is provided with an inner cavity (110), and a first side wall (120) and a second side wall (130), which are opposite each other, wherein an inner wall surface of the second side wall (130) is configured to have a recess (140), which is recessed in a direction facing away from the inner cavity (110), the recess (140) forms an air exhaust passage (150) in the inner cavity (110), and the second side wall (130) is provided with an explosion-proof hole (160), which corresponds to the air exhaust passage (150) in terms of position; a terminal (200), which is arranged on a side wall of the housing (100) other than the second side wall (130); an explosion-proof valve (300), which is mounted on the second side wall (130) and is used for covering the explosion-proof hole (160); and an electrode core (400), which is arranged inside the housing (100) and is spaced apart from the explosion-proof hole (160).

公开(公告)号：EP4525197A1

公开(公告)日：2025-03-19

申请号：EP23802426.9

申请日：2023-01-30

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  YUAN, Wansong ,  ZHANG, Da ,  DUAN, Pingan

IPC: H01M50/552

Abstract: A vehicle, which is provided with a battery pack, wherein the battery pack comprises a battery. The battery comprises a battery shell, an electrode core, and a conductive column, wherein the electrode core is arranged in the battery shell; and the conductive column passes through the battery shell so as to connect to the electrode core, and the relationship between a cross-sectional area s of the conductive column and a battery capacity C is: C/s ≤ 8.

公开(公告)号：EP3961800A1

公开(公告)日：2022-03-02

申请号：EP21193317.1

申请日：2021-08-26

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  ZHANG, Da ,  LUO, Wen

IPC: H01M50/538 ,  H01M50/54 ,  H01M50/536 ,  H01M10/0585 ,  H01M10/0587

Abstract: The present invention provides a battery and a battery pack. The battery includes a cell. The cell has at least one pole core. Each pole core has a plurality of tabs. The plurality of tabs are converged and then soldered to a cover plate of the battery to form a solder joint. When the pole core is parallel to the cover plate before convergence or after the pole core is unfolded, a spacing between the pole core and the solder joint is determined by a thickness of the pole core, a tab bending angle of the tab, and a width of a tab protection plate at the solder joint.