公开(公告)号：EP4343942A2

公开(公告)日：2024-03-27

申请号：EP23220620.1

申请日：2019-06-21

Applicant: BYD Company Limited

Inventor： HE, Long ,  SUN, Huajun ,  JIANG, Wenfeng ,  LU, Zhipei ,  ZHENG, Weixin ,  TANG, Jianglong ,  ZHU, Yan ,  WANG, Xinyue ,  HE, Kefeng

IPC: H01M50/249

Abstract: Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body, where an accommodating space is defined in the pack body, the pack body is provided therein with at least one widthwise cross beam or lengthwise cross beam, the widthwise cross beam extends along a width direction of the power battery pack, the lengthwise cross beam extends along a length direction of the power battery pack, and the accommodating space is divided into a plurality of accommodating chambers by the at least one widthwise cross beam or lengthwise cross beam; and a plurality of cells, disposed in the pack body and directly arranged in the accommodating chambers, where at least one cell is arranged in each accommodating chamber to form a cell array. The power battery pack according to the embodiments of this application has advantages of high space utilization, large energy density, long battery life, high reliability, low costs, high quality, and the like.

公开(公告)号：EP4228052A1

公开(公告)日：2023-08-16

申请号：EP21908440.7

申请日：2021-05-08

Applicant: BYD Company Limited

Inventor： LU, Peng ,  PENG, Qingbo ,  ZHENG, Weixin

IPC: H01M10/42 ,  H01M10/48 ,  G01M3/16

Abstract: A battery pack, a method for controlling a battery pack, and a vehicle. The battery pack includes a control module (101), a battery core (102), a liquid leakage detection module (103), and a pre-charge switch module (104). The liquid leakage detection module (103) is connected with the control module (101), and the liquid leakage detection module (103) is configured to send a liquid leakage signal to the control module (101) when detecting that liquid leakage occurs in the battery core (102). The control module (101) is configured to prohibit sending a pre-charge on signal to the pre-charge switch module (104) upon receiving the liquid leakage signal while receiving a start signal for starting the battery core (102). The pre-charge switch module (104) is configured to prohibit connection of the pre-charge voltage end and the power output end when not receiving the pre-charge on signal, to prohibit the battery core (102) from outputting a pre-charge voltage through the power output end.

公开(公告)号：EP3907776A1

公开(公告)日：2021-11-10

申请号：EP19909472.3

申请日：2019-06-21

Applicant: BYD Company Limited

Inventor： HE, Long ,  SUN, Huajun ,  JIANG, Wenfeng ,  LU, Zhipei ,  ZHENG, Weixin ,  TANG, Jianglong ,  ZHU, Yan ,  WANG, Xinyue ,  HE, Kefeng

IPC: H01M2/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6568 ,  B60L50/64

Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a housing; and a plurality of cells, provided in the housing, wherein the sum V1 of the volumes of the plurality of cells and the volume V2 of the battery pack satisfy V1/V2≥55%. The battery pack has a first direction and a second direction perpendicular to each other. A length direction of the cell is arranged along the first direction of the battery pack, and the plurality of cells are arranged along the second direction of the battery pack. The cell comprises a cell body, and the length of the cell body is 400-2500 mm.

公开(公告)号：EP2783406B1

公开(公告)日：2019-03-06

申请号：EP12851772.9

申请日：2012-11-23

Applicant: Shenzhen BYD Auto R&D Company Limited ,  BYD Company Limited

Inventor： HE, Yuanyuan ,  ZHENG, Weixin

IPC: H01M2/24 ,  H01M2/26 ,  H01M2/30 ,  H01M10/058 ,  H01M10/052

公开(公告)号：EP3376556A1

公开(公告)日：2018-09-19

申请号：EP16874736.8

申请日：2016-11-30

Applicant: BYD Company Limited

Inventor： TAN, Jing ,  ZHENG, Weixin

IPC: H01M2/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6568 ,  H01M10/6556

CPC classification number: H01M2/1077 ,  B60L11/187 ,  B60L11/1879 ,  H01M2/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6556 ,  H01M10/6568 ,  H01M2220/20

Abstract: The present invention provides a tray, a power battery pack, and an electric vehicle. The power battery pack includes a tray, a single cell, and a seal cover. A mounting space is formed between the tray and the seal cover, and the single cell is mounted in the mounting space. A heat dissipation channel is formed on the tray. The power battery pack provided in the present invention has a simpler structure, lower costs, a simple and convenient mounting process, and higher space utilization. Heat can be directly dissipated through the tray and be dissipated through the heat dissipation channel.

公开(公告)号：EP2425471B1

公开(公告)日：2015-04-15

申请号：EP10769251.9

申请日：2010-04-18

Applicant: BYD Company Limited

Inventor： ZHENG, Weixin

IPC: H01M2/10 ,  H01M2/20 ,  H01M2/26 ,  H01M10/04 ,  H01M2/02

CPC classification number: H01M2/024 ,  H01M2/1077 ,  H01M2/206 ,  H01M2/266 ,  H01M10/0413

公开(公告)号：EP2409312B1

公开(公告)日：2014-10-01

申请号：EP10777379.8

申请日：2010-05-20

Applicant: BYD Company Limited

Inventor： TONG, Zhiwei ,  ZHU, Jianhua ,  ZHENG, Weixin ,  HU, Hao

IPC: H01H85/04 ,  H01H85/055 ,  H01H85/36 ,  H01H85/18 ,  H01M10/00 ,  H01M2/34

CPC classification number: H01M2/206 ,  H01H85/36 ,  H01H2085/025 ,  H01M2/34 ,  H01M2200/103 ,  Y10T29/49107

公开(公告)号：EP2425471A1

公开(公告)日：2012-03-07

申请号：EP10769251.9

申请日：2010-04-18

Applicant: BYD Company Limited

Inventor： ZHENG, Weixin

IPC: H01M2/00

CPC classification number: H01M2/024 ,  H01M2/1077 ,  H01M2/206 ,  H01M2/266 ,  H01M10/0413

Abstract: A single cell (1) comprises a shell, a cover board (2) and an electric core (5). The cover board (2) is connected with the shell in a sealed manner. The electric core (5) is accommodated in the shell, at least two electrode terminals having the same polarity penetrate through the cover board (2) respectively. A power battery pack comprises a plurality of single cells as described above. The single cell and battery pack have improved rate discharging characteristics, especially welding problems may be solved and the manufacturing process may be simplified.

公开(公告)号：EP2409312A1

公开(公告)日：2012-01-25

申请号：EP10777379.8

申请日：2010-05-20

Applicant: BYD Company Limited

Inventor： TONG, Zhiwei ,  ZHU, Jianhua ,  ZHENG, Weixin ,  HU, Hao

IPC: H01H85/04 ,  H01H85/055 ,  H01H85/36 ,  H01H85/18 ,  H01M10/00 ,  H01M2/34

CPC classification number: H01M2/206 ,  H01H85/36 ,  H01H2085/025 ,  H01M2/34 ,  H01M2200/103 ,  Y10T29/49107

Abstract: A current fuse device and a battery assembly comprising the same. The current fuse device (100, 200) comprises an insulating box(1) having a cavity(10), a first conductor(21) with a first inner end(211), a second conductor(22) with a second inner end(221) and at least one elastic member(31,32) provided on at least one of the first conductor(21) and the second conductor(22) inside the cavity(10). The elastic member(31,32) forms electrical connection with the first and second inner ends(211, 221) simultaneously. The elastic member(31,32) may have elastic potential energy to break the electrical connection during short-circuiting.

公开(公告)号：EP4395007A1

公开(公告)日：2024-07-03

申请号：EP22900022.9

申请日：2022-09-08

Applicant: BYD Company Limited

Inventor： WANG, Xiao ,  YOU, Yueqiu ,  SHU, Yuanmao ,  ZHENG, Weixin ,  LU, Zhipei

IPC: H01M10/615 ,  H01M50/244 ,  H01M50/249

CPC classification number: Y02E60/10 ,  H01M50/204 ,  H01M50/249 ,  H01M10/6571 ,  H01M50/244 ,  H01M10/6554 ,  H01M10/625 ,  H01M10/615

Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a tray and a heating component. The heating component is arranged within the tray, and the heating component includes multiple heating sections. In the heating component of the battery pack, heating powers of the multiple heating sections are different, and the multiple heating sections are respectively configured to heat multiple regions within the tray to balance an ambient temperature within the tray.