公开(公告)号：US11456512B2

公开(公告)日：2022-09-27

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: H01M50/531 ,  H01M50/116 ,  H01M50/342 ,  H01M50/147 ,  H01M50/578 ,  H01M50/572 ,  H01M50/545 ,  H01M50/30 ,  H01M50/204 ,  H01M50/574 ,  H01M50/583 ,  H01M50/16 ,  H01M50/383 ,  H01M50/20 ,  H01M50/543 ,  H01M50/317

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：US11824213B2

公开(公告)日：2023-11-21

申请号：US17425914

申请日：2020-01-21

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue Wang ,  Han Cheng ,  Yan Zhu

IPC: H01M50/176 ,  H01M50/15 ,  H01M50/531 ,  H01M50/50

CPC classification number: H01M50/176 ,  H01M50/15 ,  H01M50/50 ,  H01M50/531 ,  H01M2220/20

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.

公开(公告)号：US11728505B2

公开(公告)日：2023-08-15

申请号：US16956997

申请日：2018-12-19

Applicant: BYD COMPANY LIMITED

Inventor： Luxia Jiang ,  Han Cheng ,  Jiangtao Zhou ,  Keli Yang

IPC: H01M50/147 ,  H01M50/342 ,  H01M50/578 ,  H01M50/176 ,  H01M50/536 ,  H01M10/04 ,  H01M50/574 ,  H01M50/15

CPC classification number: H01M10/0413 ,  H01M50/147 ,  H01M50/15 ,  H01M50/176 ,  H01M50/3425 ,  H01M50/574 ,  H01M50/578 ,  H01M50/536 ,  H01M2220/20

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：US20250023207A1

公开(公告)日：2025-01-16

申请号：US18898747

申请日：2024-09-27

Applicant: BYD COMPANY LIMITED

Inventor： Wansong Yuan ,  Xinyue Wang ,  Han Cheng ,  Qiu Pan

IPC: H01M50/54 ,  H01M50/533

Abstract: A battery, a battery pack, and a vehicle. The battery comprises: a battery casing; a pole core, arranged in the battery casing; and a positive electrode lead-out piece and a negative electrode lead-out piece, the positive electrode lead-out piece comprising a positive-electrode first connecting sheet, the negative electrode lead-out piece comprising a negative-electrode first connecting sheet, and the positive-electrode first connecting sheet and the negative-electrode first connecting sheet being distributed at two opposite ends of the pole core in the length direction of the battery casing. The distance between the positive-electrode first connecting sheet and the negative-electrode first connecting sheet in the length direction of the battery casing is L1, the size of the battery in the length direction of the battery casing is L, and L1 and L meet: 0.95≤L1/L≤0.99.

公开(公告)号：US20250070369A1

公开(公告)日：2025-02-27

申请号：US18943542

申请日：2024-11-11

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue WANG ,  Wansong Yuan ,  Han Cheng ,  Qiu Pan ,  Kai Li

IPC: H01M50/325

Abstract: A vehicle has a battery pack. The battery pack includes batteries or a battery module. The battery module includes batteries. Each battery includes a battery casing and an explosion-proof valve. The explosion-proof valve is arranged on the battery casing. The explosion-proof valve is provided with a notch groove. The explosion-proof valve includes an opening area. In the depth direction of the notch groove, the shape of the orthographic projection of the opening area is non-circular. The outer edge of the orthographic projection of the opening area is a preset opening boundary, the area of the orthographic projection of the opening area being S1, the area of the orthographic projection of the explosion-proof valve being S, S1 and S meeting: S1/S≥3, and the units of S1 and S both being mm2.

公开(公告)号：US20250038349A1

公开(公告)日：2025-01-30

申请号：US18911746

申请日：2024-10-10

Applicant: BYD COMPANY LIMITED

Inventor： Xinyue Wang ,  Chong Chen ,  Han Cheng

IPC: H01M50/342 ,  B60R16/04 ,  H01M50/103 ,  H01M50/15 ,  H01M50/159 ,  H01M50/55

Abstract: A battery cell (e.g., in a battery pack, or in a vehicle) comprises: a housing having an inner cavity, a first side wall, and a second side wall; a terminal post; an explosion-proof valve; and an electrode core. A first recess and a plurality of second recesses are arranged on an inner wall surface of the second side wall and are concave in a direction facing away from the inner cavity. The first recess forms a main air passage in the inner cavity. The plurality of second recesses form a plurality of branch air passages, separately communicating with the main air passage, in the inner cavity. The second side wall comprises an explosion-proof hole corresponding to a position of the main air passage. The explosion-proof valve is mounted on the second side wall. The electrode core is arranged in the housing and spaced apart from the explosion-proof hole.