公开(公告)号：EP4329056A3

公开(公告)日：2025-05-21

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: H01M50/209 ,  H01M50/249

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：EP4369496A2

公开(公告)日：2024-05-15

申请号：EP24167374.8

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 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, and satisfy: L/H=4−21,S/V=0.1mm−1−0.35mm−1,D/V=0.0000065mm−2−0.00002mm−2.

公开(公告)号：EP4369491A2

公开(公告)日：2024-05-15

申请号：EP24167368.0

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 battery pack and an electric vehicle are provided. The battery pack includes a housing (200) comprising a vehicle tray (210) that is fitted and connected to a vehicle body; or a housing being formed on a vehicle body; 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 housing accommodates only one cell along the first direction; and the cell comprises a cell body, and the length of the cell body is 400-2500 mm.

公开(公告)号：EP4350864A2

公开(公告)日：2024-04-10

申请号：EP24159357.3

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: 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, a height H and a volume V; 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 0.0005mm-2≤L/V≤0.002mm-2 and 4≤L/H≤21 and 23≤L/D≤208.

公开(公告)号：EP4345952A1

公开(公告)日：2024-04-03

申请号：EP22848593.4

申请日：2022-07-27

Applicant: BYD Company Limited

Inventor： YUAN, Xiaotao ,  XU, Zhan ,  BAO, Chunxiao ,  GE, Liping ,  HE, Kefeng

IPC: H01M4/62

Abstract: A positive electrode and a battery are provided. The positive electrode includes a current collector layer and an active component layer. The active component layer covers at least one surface of the current collector layer. The active component layer includes an active material and a conductive component. The conductive component includes at least one of a one-dimensional conductive material, a zero-dimensional conductive material, and a two-dimensional conductive material.

公开(公告)号：EP4345933A1

公开(公告)日：2024-04-03

申请号：EP22872071.0

申请日：2022-09-22

Applicant: BYD Company Limited

Inventor： YUAN, Xiaotao ,  XU, Zhan ,  WU, Xuanwei ,  YE, Tao ,  HE, Kefeng

IPC: H01M4/13 ,  H01M4/62

Abstract: A lithium-ion battery electrode, a preparation method thereof, and a lithium-ion battery are disclosed. The electrode includes a current collector and n electrode plate layers laminated on the current collector, n being an integer greater than or equal to 2. The electrode plate layer contains a pore-forming agent. A content of the pore-forming agent in the electrode plate layers gradually increases along a direction gradually away from the current collector. The pore-forming agent is selected from an electrolyte solution additive which is solid at normal temperature.

公开(公告)号：EP3958346A1

公开(公告)日：2022-02-23

申请号：EP19934188.4

申请日：2019-06-25

Applicant: BYD Company Limited

Inventor： HE, Kefeng ,  JIANG, Wenfeng ,  WANG, Xinyue ,  ZHANG, Hui ,  ZHU, Yan

IPC: H01M2/26

Abstract: A battery module, a power battery pack and a vehicle are provided. The battery module comprises n cells. At least two surfaces of the cell are respectively provided with a first positive terminal and a first negative terminal, and a second positive terminal and a second negative terminal. The n cells are arranged side by side in series. The cell (100) has a length L and a width H, where L meets 600 mm

公开(公告)号：EP3907846A1

公开(公告)日：2021-11-10

申请号：EP19908498.9

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: H02J7/00

Abstract: Provided are a power battery pack and an electric vehicle. The power battery pack is fixed on the electric vehicle, and is configured to provide power for the electric vehicle. The power battery pack includes: a pack body; a plurality of cells, disposed in the pack body and disposed in the pack body; the cell having a length Lo, a width Ho, and a thickness Do, where at least one cell meets: L 0 >H 0 ≥D 0 , a length direction of the cell is arranged along a width direction of a vehicle body of the electric vehicle, and in the width direction of the electric vehicle, a sum of the length Lo of the cell and a size W of the vehicle body of the electric vehicle in the width direction meet: 46%≤L/W≤76%; or at least one cell meets: L 0 >H 0 ≥D 0 , a length direction of the cell is arranged along a length direction of a vehicle body of the electric vehicle, and in the length direction of the electric vehicle, the sum of the length Lo of the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L/W≤76%.

公开(公告)号：EP3907778A1

公开(公告)日：2021-11-10

申请号：EP19909561.3

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

Abstract: A battery pack, a vehicle, and an energy storage device are provided. The battery pack includes a cell array and a support member, where the cell array includes a plurality of cells, each of the plurality of cells has a first size, and the first size is a maximum value of spacings between pairs of imaginary parallel planes that clamp the cell; at least one cell satisfies 600 mm≤first size≤2500 mm, and is supported by the support member; and a normal direction of two parallel planes corresponding to the first size is a direction Q, a battery placement area is defined in the battery pack, the cell array is located in the battery placement area, and each of the plurality of cells extends from one side of the battery placement area to another side of the battery placement area along the direction Q.

公开(公告)号：EP3907777A1

公开(公告)日：2021-11-10

申请号：EP19909474.9

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

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.