公开(公告)号：EP4328073A2

公开(公告)日：2024-02-28

申请号：EP23214639.9

申请日：2020-10-29

Applicant: BYD Company Limited

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

IPC: B60L50/64

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：EP4328072A2

公开(公告)日：2024-02-28

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: B60L50/64

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：EP4328071A2

公开(公告)日：2024-02-28

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: B60L50/64

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：EP4156390A1

公开(公告)日：2023-03-29

申请号：EP20936324.1

申请日：2020-10-29

Applicant: BYD Company Limited

Inventor： SUN, Huajun ,  WANG, Xiaopeng ,  PENG, Qingbo ,  LU, Zhipei ,  ZHU, Yan

IPC: H01M50/204 ,  H01M50/105

Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a housing and multiple electrode core strings electrically connected to each other and arranged in the housing. The housing includes a housing body. The housing body includes multiple sub-housings connected to each other. At least one sub-housing is provided internally with at least one reinforcing plate. Each of the sub-housings includes a top plate and a bottom plate oppositely arranged in a first direction. The reinforcing plate is arranged between the top plate and the bottom plate. The at least one reinforcing plate is connected to the top plate and the bottom plate, and divides an interior of the corresponding sub-housing into multiple accommodating cavities. At least one accommodating cavity is provided internally with at least one electrode core string. Each of the electrode core strings includes multiple electrode core assemblies sequentially arranged in a second direction and connected in series. The electrode core assemblies are packaged in a packaging film. A length of the electrode core string extends in the second direction. The housing is provided with a mounting component, and the mounting component is configured to be connected and fixed to an external load.

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：EP3905377A1

公开(公告)日：2021-11-03

申请号：EP19904418.1

申请日：2019-07-25

Applicant: BYD Company Limited

Inventor： REN, Zhenghua ,  LU, Zhipei ,  GUO, Kun ,  PENG, Qingbo ,  ZHU, Yan

IPC: H01M2/12 ,  H01M2/10

Abstract: The present invention relates to a power battery pack (400) and a vehicle. The power battery pack (400) includes a battery tray (100) and several battery cells (200) disposed on the battery tray (100). Each of the battery cells (200) has a cell anti-explosion valve (201). The battery tray (100) includes a tray body. At least a part of the tray body is formed therein with an air passage. The tray body is provided with several inlet vents (31) and at least one exhaust vent. At least part of the inlet vents (31) and the cell anti-explosion valves (201) are disposed opposite to each other and correspond one-to-one to each other.

公开(公告)号：EP4535530A1

公开(公告)日：2025-04-09

申请号：EP23815130.2

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 protective bottom plate, a battery pack composite protective structure and a vehicle. The battery protective bottom plate comprises an upper fiber reinforced resin layer, a metal plate and a lower fiber reinforced resin layer, wherein the metal plate is located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer, and the following condition is satisfied: (I) 1 ≤ ρ 2 ∗ d 1 + d 2 + d 3 / d 2 ρ 2 + ρ 1 ∗ d 1 + ρ 3 ∗ d 3 / d 1 + d 3 ∗ σ 1 ∗ d 1 + σ 3 ∗ d 3 / d 1 + d 3 σ 2 ≤ 2 .

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.

公开(公告)号：EP4369497A2

公开(公告)日：2024-05-15

申请号：EP24167375.5

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

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; anda plurality of cells, provided in the housing, each cell comprises a cell body having a length L, a width H, a thickness D and a volume V, and the thickness D of the cell body and the volume V of the cell body satisfy D/V= 0.0000065 mm-2-0.00002 mm-2; 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 only one cell along the first direction; and the cell comprises a cell body, and the length of the cell body is 600-2500 mm.

公开(公告)号：EP4369494A2

公开(公告)日：2024-05-15

申请号：EP24167371.4

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

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 of the cell body is 400-1500 mm; and wherein the surface area S of the cell body (110) and the volume V of the cell body (110) satisfy: S/V= 0.1 mm-1-0.35 mm-1, and the length L of the cell body (110) and the surface area S of the cell body (110) satisfy: L/S= 0.002 mm-1-0.005 mm-1.