公开(公告)号：EP4328071A3

公开(公告)日：2024-05-01

申请号：EP23214636.5

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：EP4343943A1

公开(公告)日：2024-03-27

申请号：EP22848668.4

申请日：2022-07-29

Applicant: BYD Company Limited

Inventor： SHU, Yuanmao ,  WU, Yanfeng ,  ZHENG, Weixin ,  LU, Zhipei ,  SUN, Huajun

IPC: H01M50/289 ,  H01M50/503 ,  H01M50/204

Abstract: A battery assembly (100), a battery pack (200) and a vehicle (300) are provided. The battery assembly includes: multiple cells (110); a connecting member (40), where the cells is electrically connected to each other through the connecting member; and a thermally conductive member (30), where the cell has a housing (10), the thermally conductive member is provided between the connecting member and the housing, and the thermally conductive member is thermally conductively connected to the connecting member and the housing.

公开(公告)号：EP4333128A1

公开(公告)日：2024-03-06

申请号：EP22815219.5

申请日：2022-05-30

Applicant: BYD Company Limited

Inventor： PAN, Yi ,  XIE, Jing ,  GUO, Zizhu ,  SUN, Huajun

IPC: H01M4/64 ,  H01M4/134

Abstract: The present disclosure provides a current collector, a preparation method for a current collector, a negative electrode, and an electrochemical energy storage device. The current collector includes: a first polymer layer; a metal layer, the metal layer being disposed on a side of the first polymer layer; and a second polymer layer, the second polymer layer being disposed on a side of the metal layer facing away from the first polymer layer; and in a direction from the first polymer layer to the second polymer layer, the current collector having a number of through-holes that penetrate the current collector.

公开(公告)号：EP4329056A2

公开(公告)日：2024-02-28

申请号：EP23220823.1

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: H01M50/103

Abstract: The present invention basically relates to a power battery pack, configured to provide power for an electric vehicle and comprising: a pack body; a plurality of cells, disposed in the pack body, the cell having a length L 0 , a width H 0 , and a thickness D 0 , wherein L 0 >H 0 ≥D 0 ; when the power battery pack is placed on the electric vehicle, a length direction of the cell extends along a width direction or a length direction of the electric vehicle; when the length direction of the cell extends along the width direction of the electric vehicle, the length L 0 of the cell and a size W of a vehicle body of the electric vehicle in the width direction meet: 46%≤L 0 /W≤76%; or when the length direction of the cell extends along the length direction of the electric vehicle, the length L 0 of the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L 0 /X≤76%, at least one of the cells, comprising a battery body, the battery body having a length L, a width H, a thickness D, and a volume V, the length L of the battery body being greater than the width H, and the width H of the battery body being greater than the thickness D, wherein the battery body meets: 400mm≤L≤2500mm and L/V= 0.0005mm-2 to 0.002mm-2.

公开(公告)号：EP4311008A2

公开(公告)日：2024-01-24

申请号：EP23214631.6

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：EP4160766A1

公开(公告)日：2023-04-05

申请号：EP21812612.6

申请日：2021-05-24

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  WANG, Gaowu ,  LIN, Wensheng ,  ZHAO, Ling ,  ZHU, Yan

IPC: H01M10/0525

Abstract: The present disclosure provides a lithium ion battery, a power battery module, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer loaded on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets: 80 d 2 ρ C p × 1.12 nL n + 1 W + 1.35 L W + 0.337 n + 4.49 2000 .

公开(公告)号：EP4160752A1

公开(公告)日：2023-04-05

申请号：EP21811877.6

申请日：2021-05-24

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  WANG, Gaowu ,  LIN, Wensheng ,  ZHAO, Ling ,  ZHU, Yan

IPC: H01M4/66 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0587

Abstract: The present disclosure provides a lithium ion battery, a power battery module, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer loaded on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets: 3 ≤ A = d 2 ρ C p × 1.35 L W ≤ 850 .

公开(公告)号：EP4142027A1

公开(公告)日：2023-03-01

申请号：EP20932320.3

申请日：2020-10-29

Applicant: BYD Company Limited

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

IPC: H01M50/112

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：EP4087024A1

公开(公告)日：2022-11-09

申请号：EP20913488.1

申请日：2020-12-29

Applicant: BYD Company Limited

Inventor： HE, Long ,  SUN, Huajun ,  ZHU, Yan ,  HU, Shichao

IPC: H01M50/10 ,  H01M50/20

Abstract: A cell, a battery pack, and an electric vehicle are provided in the present disclosure. The cell includes a hermetical metal housing and at least two hermetical accommodating cavities, multiple electrode core assemblies, and an encapsulation film arranged in the metal housing. The electrode core assemblies are arranged along a first direction. The electrode core assemblies are connected in series. A length of each electrode core assembly extends along the first direction. The electrode core assembly includes an electrode core assembly body and a first electrode and a second electrode configured to lead out a current. The first electrode and the second electrode are respectively arranged on two sides of the electrode core assembly body along the first direction. At least one of the accommodating cavities is defined by the encapsulation film, and the electrode core assembly body is arranged in the accommodating cavity. A length of the cell extends along the first direction. The length of the cell ranges from 400 mm to 2500 mm. A thickness of the cell extends along a second direction perpendicular to the first direction. A ratio of the length to the thickness of the cell ranges from 5 to 250.

公开(公告)号：EP4050689A1

公开(公告)日：2022-08-31

申请号：EP20890373.2

申请日：2020-11-19

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  LU, Zhipei ,  ZHU, Yan ,  HU, Shichao

IPC: H01M10/04

Abstract: The present disclosure provides a battery, including: a housing (10); a plurality of accommodating cavities (60) arranged in the housing; a partition plate (20) for separating two adjacent accommodating cavities (60); an electrode core assembly (30), received in one of the accommodating cavities (60), the electrode core assembly (30) including at least one electrode core, and a plurality of electrode core assemblies (30) being sequentially arranged in a first direction and connected in series; a plurality of sampling wires, electrically connected to the plurality of electrode core assemblies (30) correspondingly; and a wire harness channel, receiving the plurality of sampling wires. A battery module, a battery pack, and an electric vehicle are further provided.