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：US20230231287A1

公开(公告)日：2023-07-20

申请号：US18176179

申请日：2023-02-28

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Pingan DUAN ,  Han CHENG

IPC: H01M50/536 ,  H01M50/538

CPC classification number: H01M50/536 ,  H01M50/538

Abstract: The present disclosure discloses a battery core, a battery, and a battery pack. The battery core includes: at least one core, where each core has a plurality of tabs, the plurality of tabs successively form, after being converged, a tab end-portion staggered layer region, a tab soldering region, and a pre-soldered press-fit region, parts of the plurality of tabs exposed out of the core form a tab exposure region, and a length of the tab exposed out of the core in the tab exposure region is determined according to a width of the tab end-portion staggered layer region, a width of the tab soldering region, a width of the pre-soldered press-fit region, a thickness of the core, and a tab bending angle of the tab.

公开(公告)号：US20210066700A1

公开(公告)日：2021-03-04

申请号：US17040409

申请日：2019-01-22

Applicant: BYD COMPANY LIMITED

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

IPC: H01M2/34 ,  H01M2/24 ,  H01M10/38 ,  H01M2/04

Abstract: A battery cell 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 electrically connected to a conductive terminal disposed on the cover plate; an inner spacer including a bottom plate disposed on a surface of the pole core facing the cover plate, an end of a connecting plate connected to an edge of the bottom plate and formed in a bent shape with an edge of the bottom plate, and a support plate connected to another end of the connecting plate formed in a bent shape with the support plate and extending from the bottom plate. A part of the electrode tab extends from a surface of the support plate facing the pole core to a surface away from the pole core.

公开(公告)号：US20200343491A1

公开(公告)日：2020-10-29

申请号：US16956997

申请日：2018-12-19

Applicant: BYD COMPANY LIMITED

Inventor： Luxia JIANG ,  Han CHENG ,  Jiangtao ZHOU ,  Keli YANG

IPC: H01M2/04 ,  H01M2/34 ,  H01M10/04

Abstract: A battery cover plate assembly, a cell, a battery module, a power battery, and an electric vehicle are provided. The battery cover plate assembly includes a cover plate, an inner lead-out member, and an outer electrode terminal. The inner lead-out member and the outer electrode terminal are electrically connected by using a current interrupt apparatus. A flipping member of the current interrupt apparatus is electrically connected to the outer electrode terminal. A score member is electrically connected to the inner lead-out member. A score is formed on the score member and is electrically connected to the flipping member. The inner lead-out member is mounted on the cover plate through a cover plate insulator. The cover plate insulator has a first engagement portion engaged with the cover plate and a second engagement portion engaged with the inner lead-out member.

公开(公告)号：US20250070411A1

公开(公告)日：2025-02-27

申请号：US18941380

申请日：2024-11-08

Applicant: BYD COMPANY LIMITED

Inventor： Han CHENG ,  Xinyue WANG ,  Chong CHEN

IPC: H01M50/533 ,  B60R16/04 ,  H01M50/103 ,  H01M50/119 ,  H01M50/15 ,  H01M50/30 ,  H01M50/342 ,  H01M50/474 ,  H01M50/477 ,  H01M50/55

Abstract: A battery cell includes a housing having an inner cavity, a first side wall and a second side wall opposite to each other. The second side wall includes an explosion-proof hole. A first bottom support and a second bottom support are disposed in the inner cavity, support the electrode core, spaced apart from each other, and define a first gas channel. The second side wall support the first bottom support and the second bottom support. The explosion-proof hole communicates with the inner cavity through the first gas channel. A terminal post is disposed on a side wall of the housing other than the second side wall; An explosion-proof valve is mounted on the second side wall, and configured to cover the explosion-proof hole. An electrode core is disposed in the inner cavity, connected to the terminal post, and spaced apart from the explosion-proof hole.

公开(公告)号：US20200168884A1

公开(公告)日：2020-05-28

申请号：US16626829

申请日：2018-05-28

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Luxia JIANG ,  Shichao HU ,  Peng LU ,  Han CHENG ,  Keli YANG

IPC: H01M2/26 ,  H01M2/02 ,  H01M2/12 ,  H01M2/10

Abstract: A battery cover plate assembly includes a cover plate, an electrode terminal, a current interrupt structure, and an arc extinguishing portion. The electrode terminal is disposed on the cover plate and includes an electrode inner terminal and an electrode outer terminal. The electrode inner terminal and the electrode outer terminal are electrically connected through the current interrupt structure. The current interrupt structure is capable of disrupting the electrical connection between the electrode inner terminal and the electrode outer terminal under the action of a gas pressure. The arc extinguishing portion is configured to reduce an electric arc generated when the current interrupt structure disrupts the electrical connection between the electrode inner terminal and the electrode outer terminal. When the electrical connection between the electrode inner terminal and the electrode outer terminal is disrupted, an arcing effect is generated due to high voltages at positive and negative electrodes of the battery.

公开(公告)号：US20230076040A1

公开(公告)日：2023-03-09

申请号：US17988537

申请日：2022-11-16

Applicant: BYD COMPANY LIMITED

Inventor： Shichao HU ,  Han CHENG

IPC: H01M50/477 ,  H01M50/105 ,  H01M50/474 ,  H01M50/178 ,  H01M50/548 ,  H01M50/531 ,  H01M50/211

Abstract: An electrode core assembly includes an encapsulation film, and an electrode core and a spacer that are disposed in an accommodating cavity defined by the encapsulation film. The electrode core includes an electrode core body and two electrode lead-out members that are electrically connected to the electrode core body. The length of the electrode core body extends along a first direction. Each of two opposite ends of the electrode core body in the first direction includes a V-shaped end in a cross-sectional view with a tip protruding outward from the electrode core body. The two electrode lead-out members are connected to the electrode core body at the tips of the two V-shaped ends. The spacer includes an inclined portion disposed on one of the V-shaped ends and has an electrode lead-out hole penetrating through the spacer and being configured to allow the electrode lead-out member to pass through.

公开(公告)号：US20220173464A1

公开(公告)日：2022-06-02

申请号：US17425914

申请日：2020-01-21

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Han CHENG ,  Yan ZHU

IPC: H01M50/15 ,  H01M50/176

Abstract: The present application provides a battery unit, a battery module, and a vehicle. The battery unit includes a housing, a cover plate, a first battery post, a second battery post, and an electrode core. The housing is provided with an opening. The cover plate covers the opening. The electrode core is disposed inside the housing. The cover plate includes a cover plate body and a concave cavity portion that is concave inward relative to an outer surface of the cover plate body. The first battery post is accommodated in the concave cavity portion. A first electrode tab of the electrode core is electrically connected to the first battery post. The second battery post is electrically connected to the cover plate body. A second electrode tab of the electrode core is electrically connected to the cover plate body.