公开(公告)号：EP2783441A1

公开(公告)日：2014-10-01

申请号：EP12852188.7

申请日：2012-11-26

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

Inventor： HE, Long ,  ZHU, Jianhua ,  LAI, Qing ,  TONG, Zhiwei ,  LU, Zhipei

IPC: H02H7/18 ,  H02H3/08 ,  H02H3/06

CPC classification number: H02H3/093 ,  G01R15/207 ,  G01R19/0092 ,  H02H3/0935 ,  H02H7/18 ,  H02J7/0026

Abstract: A power battery assembly (1) comprises a battery circuit and a circuit protecting unit (100). The circuit protecting unit (100) is connected in series with the battery unit. The circuit protecting unit (100) comprises a relay (2) and a current sensing unit (3) connected in series with the battery circuit, a switching unit (5) connected with the relay (2) for controlling the switching of the relay (2), and a controller (4) connected with the switching unit (5) and the current sensing unit (3)to control the switching on or switching off the switching unit (5) based on comparison of the current value detected by the current sensing unit (3) and sent to the controller (4) with a first predetermined current value. An electric vehicle is also provided.

公开(公告)号：EP4546548A1

公开(公告)日：2025-04-30

申请号：EP23825789.3

申请日：2023-02-17

Applicant: BYD Company Limited

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

IPC: H01M50/503 ,  H01M50/209 ,  H01M10/613

Abstract: Provided in the present disclosure is a battery pack, comprising: a plurality of battery cells, each of which comprises a shell, a battery core, and a plurality of terminal posts, wherein an accommodating space is defined inside the shell, the cell is arranged in the accommodating space, the shell is at least provided with a first surface and a second surface, and the terminal posts are arranged on the cell and extend out of the shell from the first surface; an electrical connecting member, which is arranged opposite each of two adjacent first surfaces and is electrically connected to each of two adjacent terminal posts, so as to conduct two adjacent battery cells; and a heat transfer member, which can transfer heat from the electrical connecting member to the second surface.

公开(公告)号：EP4535531A1

公开(公告)日：2025-04-09

申请号：EP23815139.3

申请日：2023-05-29

Applicant: BYD Company Limited

Inventor： WAN, Long ,  LU, Zhipei ,  PENG, Qingbo ,  ZHU, Yan ,  TAN, Zhijia

IPC: H01M50/231 ,  H01M50/224 ,  H01M50/233 ,  H01M50/242 ,  H01M50/249

Abstract: A battery pack composite protection structure and a vehicle. The battery pack composite protection structure comprises a battery pack and a battery protection bottom plate, the battery protection bottom plate comprising a metal plate; the battery protection bottom plate is located below the battery pack, a buffer zone being formed between the battery pack and the battery protection bottom plate; the buffer zone and the metal plate satisfy the following conditions: (I), d is the thickness of the metal plate in mm; σ is the tensile strength of the metal plate in MPa; ε is the elongation at break of the metal plate; and h is the height of the buffer zone, in mm.

公开(公告)号：EP4369495A2

公开(公告)日：2024-05-15

申请号：EP24167373.0

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

CPC classification number: B60K1/04 ,  B60K2001/043820130101 ,  H01M50/249 ,  H01M2220/2020130101 ,  H01M50/131 ,  H01M50/209 ,  H01M50/103 ,  H01M50/367 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6567 ,  H01M10/6568 ,  H01M10/6569 ,  H01M10/625 ,  H01M50/119 ,  Y02E60/10

Abstract: A cell for a battery pack, a battery pack and an electric vehicle are provided. The cell for a battery pack comprising: a cell body (110) having a length L, a width H, a thickness D, a surface area S and a volume V, the length L of the cell body being greater than the width H, and the width H of the cell body being greater than the thickness D, wherein the length L and the width H satisfy: L/H=4-21; and wherein the surface area S of the cell body (110) and the energy E of the cell body (110) satisfy: S/E≤1000 mm2 Wh-1, and the volume V of the cell body (110) and the energy E of the cell body (110) satisfy: V/E≤2000 mm3·Wh-1.

公开(公告)号：EP4369493A2

公开(公告)日：2024-05-15

申请号：EP24167370.6

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

CPC classification number: B60K1/04 ,  B60K2001/043820130101 ,  H01M50/249 ,  H01M2220/2020130101 ,  H01M50/131 ,  H01M50/209 ,  H01M50/103 ,  H01M50/367 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6567 ,  H01M10/6568 ,  H01M10/6569 ,  H01M10/625 ,  H01M50/119 ,  Y02E60/10

Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a housing (200); 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%; and 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; wherein the housing defines a plurality of accommodating spaces, the plurality of accommodating spaces comprise at least one accommodating space along the first direction, and each accommodating space of the housing accommodates only one cell along the first direction; and the cell comprises a cell body, and the length of the cell body is 400-1500 mm.

公开(公告)号：EP4369492A2

公开(公告)日：2024-05-15

申请号：EP24167369.8

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

CPC classification number: B60K1/04 ,  B60K2001/043820130101 ,  H01M50/249 ,  H01M2220/2020130101 ,  H01M50/131 ,  H01M50/209 ,  H01M50/103 ,  H01M50/367 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6567 ,  H01M10/6568 ,  H01M10/6569 ,  H01M10/625 ,  H01M50/119 ,  Y02E60/10

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 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 housing accommodates two cells along the first direction; and the cell comprises a cell body, and the length of the cell body is 400-1500 mm.

公开(公告)号：EP4328072A3

公开(公告)日：2024-05-01

申请号：EP23214637.3

申请日：2020-10-29

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  LU, Zhipei ,  PENG, Qingbo ,  WAN, Long ,  ZHU, Yan

IPC: H01M50/112 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6557 ,  H01M50/10 ,  H01M50/204 ,  H01M50/207 ,  H01M50/209 ,  H01M50/211 ,  H01M50/224 ,  H01M50/242 ,  H01M50/249 ,  H01M50/291 ,  H01M50/358 ,  H01M50/367 ,  B60L50/64

CPC classification number: Y02E60/10 ,  Y02T10/70 ,  B60L50/64 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M50/10 ,  H01M50/204 ,  H01M50/211 ,  H01M50/224 ,  H01M50/242 ,  H01M50/249 ,  H01M50/291 ,  H01M50/358 ,  H01M10/6557 ,  H01M50/207 ,  H01M50/209 ,  H01M50/367

Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a housing, at least one structural beam located in the housing, and multiple electrode core strings electrically connected to one another located in the housing. The housing includes a housing body including a top plate and a bottom plate arranged opposite to each other in a first direction. The at least one structural beam is located between the top plate and the bottom plate, the at least one structural beam is connected to the top plate and the bottom plate, the at least one structural beam divides the interior of the housing into multiple accommodating cavities, and at least one electrode core string is provided in at least one accommodating cavity. A mounting portion is provided on the housing, and the mounting portion is configured to be connected and fixed to an external load. The electrode core string includes multiple electrode core assemblies sequentially disposed in a second direction and connected in series. The multiple electrode core assemblies are encapsulated in an encapsulation film. A length direction of the electrode core string extends in the second direction.

公开(公告)号：EP4343941A2

公开(公告)日：2024-03-27

申请号：EP23220492.5

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：EP4329081A2

公开(公告)日：2024-02-28

申请号：EP23214628.2

申请日：2020-10-29

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  LU, Zhipei ,  PENG, Qingbo ,  WAN, Long ,  ZHU, Yan

IPC: H01M50/502

Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a sealed housing, and at least one housing structural beam and multiple electrode core strings electrically connected to one another located in the housing. The housing includes a housing body, including a top plate and a bottom plate arranged opposite to each other in a first direction. The structural beam is located between the top plate and the bottom plate, the at least one structural beam divides the interior of the housing into multiple accommodating cavities, the at least one structural beam is connected to the top plate and the bottom plate, and at least one electrode core string is provided in at least one accommodating cavity. An atmospheric pressure in the accommodating cavity is lower than an atmospheric pressure outside the housing. A mounting portion is provided on the housing, and the mounting portion is configured to be connected and fixed to an external load. The electrode core string includes multiple electrode core assemblies sequentially disposed in a second direction and connected in series. The electrode core assembly is encapsulated in an encapsulation film. A length direction of the electrode core string extends in the second direction.

公开(公告)号：EP4329067A2

公开(公告)日：2024-02-28

申请号：EP23220826.4

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: The invention basically relates to a battery pack, comprising a cell array and a support member, wherein the cell array comprises a plurality of cells, at least one of the cells comprises a cell body and electrode terminals extending out of the cell body and configured to output a current inside the cell body, the at least one cell comprises a casing and a core located inside the casing, a supporting region is formed on the casing, and the cell is connected to the support member through the supporting region and is supported by the support member the cell body being substantially a cuboid with a length L, 600 mm≤L≤2500 mm, a thickness D, and a height H; the length L of the cell body being greater than or equal to the height H of the cell body and the height H of the cell body being greater than or equal to the thickness D of the cell body, wherein the cell meets 4≤L/H≤21 and 23≤L/D≤208.