公开(公告)号：US20250023206A1

公开(公告)日：2025-01-16

申请号：US18898079

申请日：2024-09-26

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/54 ,  H01M50/103 ,  H01M50/533 ,  H01M50/534 ,  H01M50/553 ,  H01M50/562 ,  H01M50/586 ,  H01M50/593

Abstract: A battery includes a battery housing, an electrode core, lead-out plates, and conductive posts. The electrode core and the lead-out plates are connected to each other and disposed in the battery housing, and the conductive posts pass through the battery housing to connect to the lead-out plates. A relationship between a cross-sectional area slead in mm2 of the lead-out plates and a capacity C in Ah of the battery is 0

公开(公告)号：US20210210823A1

公开(公告)日：2021-07-08

申请号：US17059459

申请日：2019-05-17

Applicant: BYD COMPANY LIMITED

Inventor： Wansong YUAN ,  Yi PAN ,  Guihai LIANG ,  Fulan TANG

IPC: H01M50/536 ,  H01M10/0525 ,  H01M50/586 ,  H01M50/59

Abstract: An electrode assembly for a lithium-ion secondary battery and a preparation method thereof, and a lithium-ion secondary battery are disclosed. The electrode assembly comprises an electrode and an electrode post, where an electrode tab is extended from the electrode; a welding connection portion is formed by welding between the electrode tab and the electrode post; the welding connection portion has a bulge welding defect; the surface of the welding connection portion is covered with a polymer protective layer, and the thickness of the polymer protective layer is greater than or equal to the thickness of the bulge welding defect; and the bulge welding defect is embedded in the polymer protective layer.

公开(公告)号：US20250038350A1

公开(公告)日：2025-01-30

申请号：US18912109

申请日：2024-10-10

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/342 ,  B60R16/04 ,  H01M50/103

Abstract: A battery includes a battery shell and an anti-explosion valve disposed on the battery shell. A notch groove is disposed on the anti-explosion valve. The anti-explosion valve comprises an opening region. In a depth direction of the notch groove, an outer edge of an orthographic projection of the opening region is an opening boundary, an area S1 of the orthographic projection of the opening region in mm2 and a capacity A of the battery in Ah meet: S1>0.5 A.

公开(公告)号：US20240266696A1

公开(公告)日：2024-08-08

申请号：US18639314

申请日：2024-04-18

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Wansong YUAN ,  Pingan DUAN ,  Aipeng WEN

IPC: H01M50/571 ,  H01M50/103 ,  H01M50/249 ,  H01M50/533 ,  H01M50/586

CPC classification number: H01M50/571 ,  H01M50/103 ,  H01M50/533 ,  H01M50/249 ,  H01M50/586

Abstract: A battery unit, a battery module, and a vehicle are provided. The battery unit includes a housing, an electrode core, a first electrode terminal, and a second electrode terminal. A chamber is defined in the housing. The electrode core is arranged in the chamber, the electrode core includes a first electrode tab and a second electrode tab, one of the first electrode tab and the second electrode tab is a positive electrode tab, the other one of the first electrode tab and the second electrode tab is a negative electrode tab, and the positive electrode tab is physically and electrically connected to the housing. The first electrode terminal is electrically connected to the first electrode tab. The second electrode terminal is electrically connected to the second electrode tab.

公开(公告)号：US20250023210A1

公开(公告)日：2025-01-16

申请号：US18897873

申请日：2024-09-26

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/553 ,  H01M50/103 ,  H01M50/548 ,  H01M50/586 ,  H01M50/593

Abstract: A battery includes a battery shell, an electrode core, and a conductive column. The electrode core is disposed within the battery shell, and the conductive column extends through the battery shell and is connected to the electrode core, where a cross-sectional area s in mm2 of the conductive column and a battery capacity C in Ah of the battery meet: C/s≤8.

公开(公告)号：US20240250394A1

公开(公告)日：2024-07-25

申请号：US18624041

申请日：2024-04-01

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Wansong YUAN ,  Pingan DUAN ,  Aipeng WEN

IPC: H01M50/571 ,  H01M50/103 ,  H01M50/159 ,  H01M50/533

CPC classification number: H01M50/571 ,  H01M50/103 ,  H01M50/159 ,  H01M50/533 ,  H01M2220/20

Abstract: A battery unit includes a housing, an electrode core, a first electrode terminal, and a second electrode terminal. A chamber is defined in the housing. The electrode core is arranged in the chamber, the electrode core includes a first electrode tab and a second electrode tab, one of the first electrode tab and the second electrode tab is a positive electrode tab, the other one of the first electrode tab and the second electrode tab is a negative electrode tab, the positive electrode tab is physically and electrically connected to the housing, and each of an end of the first electrode tab and/or an end of the second electrode tab away from the electrode core includes multiple connection pieces spaced apart. The first electrode terminal is electrically connected to the first electrode tab. The second electrode terminal is electrically connected to the second electrode tab.

公开(公告)号：US20240106074A1

公开(公告)日：2024-03-28

申请号：US18526259

申请日：2023-12-01

Applicant: BYD COMPANY LIMITED

Inventor： Liangbin RONG ,  Qiu PAN ,  Xinyue WANG ,  Han CHENG ,  Wansong YUAN

IPC: H01M50/46 ,  H01M4/70 ,  H01M50/107

CPC classification number: H01M50/46 ,  H01M4/70 ,  H01M50/107 ,  H01M2220/20

Abstract: A cylindrical battery includes a housing having an accommodating space; and a negative electrode sheet, a first separator, a positive electrode sheet, and a second separator that are wound multiple turns forming an electrode core. The housing is co-axial with the electrode core that is disposed in the accommodating space. The positive electrode sheet includes a positive electrode material layer and a positive electrode foil layer. The negative electrode sheet includes a negative electrode material layer and a negative electrode foil layer. Some of the wound turns of the positive electrode foil layer extends toward an end of the housing to form a positive electrode tab. Some of the wound turns of the negative electrode foil layer extends toward another end of the housing to form the negative electrode tab.

公开(公告)号：US20230099141A1

公开(公告)日：2023-03-30

申请号：US17801024

申请日：2021-02-07

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/618 ,  H01M50/103 ,  H01M50/133 ,  H01M10/658

Abstract: A battery case is provided, including a plurality of side plates. A first side plate has the largest area among the plurality of side plates, and at least one first side plate includes a first portion and a second portion. The first portion is a curved surface concave toward inside of the battery case. 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：US20250030094A1

公开(公告)日：2025-01-23

申请号：US18905208

申请日：2024-10-03

Applicant: BYD Company Limited

Inventor： Wansong YUAN ,  Xinyue Wang ,  Chong Chen ,  Pingan Duan ,  Da Zhang

IPC: H01M50/143 ,  H01M50/103 ,  H01M50/119 ,  H01M50/249 ,  H01M50/392 ,  H01M50/553

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

公开(公告)号：US20240356115A1

公开(公告)日：2024-10-24

申请号：US18758684

申请日：2024-06-28

Applicant: BYD COMPANY LIMITED

Inventor： Jiancheng LUO ,  Wansong YUAN ,  Xinyue WANG ,  Yukai ZHAO ,  Pingan DUAN

IPC: H01M50/129 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/133

CPC classification number: H01M50/129 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/133 ,  H01M2220/20

Abstract: An aluminum plastic film of a battery, includes a pit and a flanging. The pit is used for placing a battery core and has a bottom surface that is connected to a first side elevation and a second side elevation. The first side elevation and the second side elevation are connected to each other. A first lower arc chamfer is formed at the joint of the bottom surface and the first side elevation, and a second lower arc chamfer is formed at the joint of the bottom surface and the second side elevation. The flanging is located at the upper periphery rim of the pit and connected to the upper end of the side elevation. A first upper arc chamfer and a second upper arc chamfer are formed at the joints of the first side elevation and the flanging and of the second side elevation and the flanging.