公开(公告)号：US20230118034A1

公开(公告)日：2023-04-20

申请号：US18084055

申请日：2022-12-19

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/474 ,  H01M50/477 ,  H01M50/483 ,  H01M50/486

Abstract: A battery core and a battery are provided. The battery core includes a plate, a separator, a tab, and an insulating support portion. The tab is connected with the plate. The insulating support portion is arranged on an end of the plate and supports the tab. The tab extends through the insulating support portion and extends outward.

公开(公告)号：US20230070599A1

公开(公告)日：2023-03-09

申请号：US17800664

申请日：2021-02-07

Applicant: BYD COMPANY LIMITED

Inventor： Wansong YUAN ,  Haipeng YAN ,  Xi JIANG ,  Xiangda ZOU ,  Yan ZHU

IPC: H01M10/04 ,  H01M10/658 ,  H01M10/44

Abstract: A cell array, including a plurality of cells arranged in sequence is provided. Each of the plurality of cells includes a housing and an electrode core. The electrode core includes an electrode plate. The electrode plate includes a current collector and a coating layer arranged on the current collector. The cell array satisfies the following formula 1: (1−JRw)+(SRw−1)=10%−15%. JRw is an expansion space for the electrode core inside each of the plurality of cells in a first direction, SRw is an expansion space outside the plurality of cells in the first direction, and a thickness direction of each of the plurality of cells is defined as the first direction. JRw=Pw/(Cellw−Kw−Cw). SRw=(Mw−MNw)/(Celln×Cellw).

公开(公告)号：US20230059574A1

公开(公告)日：2023-02-23

申请号：US17792318

申请日：2021-01-04

Applicant: BYD COMPANY LIMITED

Inventor： Long HE ,  Huajun SUN ,  Shichao HU ,  Wansong YUAN ,  Yan ZHU

IPC: H01M50/119 ,  H01M10/04 ,  H01M50/186 ,  H01M50/103 ,  H01M50/451 ,  H01M50/317 ,  H01M50/51 ,  H01M50/529

Abstract: A battery, a battery module, a battery pack, and an electric vehicle are provided. The battery includes a metal shell and a plurality of electrode core assemblies sealed in the metal shell and arranged in sequence. The electrode core assemblies are connected in series. Each of the electrode core assemblies includes at least one electrode core. The electrode core assemblies are sealed in a packaging film. An air pressure between the metal shell and the packaging film is lower than an air pressure outside the metal shell. An air pressure inside the packaging film is lower than the air pressure between the metal shell and the packaging film.