公开(公告)号：US20230041144A1

公开(公告)日：2023-02-09

申请号：US17792657

申请日：2021-01-12

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/211 ,  H01M50/119 ,  H01M50/103 ,  H01M50/105 ,  H01M50/121 ,  H01M50/124 ,  H01M50/133 ,  H01M50/209 ,  H01M50/249

Abstract: A cell (100) is provided, which includes a metal housing (11) and multiple electrode core strings encapsulated in the metal housing (11). The multiple electrode core strings are arranged in a second direction and sequentially connected in series. Each of the electrode core strings includes an encapsulation film (13) and multiple electrode core assemblies (12) arranged in a first direction and sequentially connected in series. The electrode core assemblies (12) are encapsulated in the encapsulation film (13). An air pressure between the metal housing (11) and the encapsulation film (13) is lower than an air pressure outside the metal housing (11).

公开(公告)号：US20220416336A1

公开(公告)日：2022-12-29

申请号：US17781306

申请日：2020-10-23

Applicant: BYD COMPANY LIMITED

Inventor： Peng LU ,  Zhipei LU ,  Xinyue WANG ,  Dongjun DENG ,  Yan ZHU

IPC: H01M50/164 ,  H01M50/159 ,  H01M50/543 ,  H01M50/148 ,  H01M50/593

Abstract: A cover plate assembly, a battery, a battery module, a power battery pack, and an electric vehicle are disclosed. The cover plate assembly includes a cover plate body (1), a first electrode terminal (2), a second electrode terminal, and a resistive coating (3). The second electrode terminal is insulatively connected with the cover plate body (1). The first electrode terminal (2) is electrically connected with the cover plate body (1) by the resistive coating (3). The resistive coating (3) includes a weak portion (331). When a current flowing through the resistive coating (3) is greater than a predetermined threshold, the weak portion (331) is melted to disconnect the cover plate body (1) from the first electrode terminal (2).

公开(公告)号：US20220118841A1

公开(公告)日：2022-04-21

申请号：US17421895

申请日：2019-06-21

Applicant: BYD COMPANY LIMITED

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

IPC: B60K1/04 ,  B60L50/64 ,  B60L50/60 ,  H01M10/6554 ,  H01M50/209 ,  H01M50/244 ,  H01M50/35 ,  H01M50/342

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.

公开(公告)号：US20220102787A1

公开(公告)日：2022-03-31

申请号：US17422084

申请日：2019-06-21

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/103 ,  H01M50/342 ,  H01M50/119 ,  H01M50/531

Abstract: A cell, a power battery pack, and an electric vehicle are provided. The cell includes a cell body, and the cell body has a length L, a width H and a thickness D. The length L of the cell body is greater than the width H, the width H of the cell body is greater than the thickness D, the length L of the cell body is greater than 600 mm, and the length L and the width H of the cell body satisfy L/H=4-21.

公开(公告)号：US20250015414A1

公开(公告)日：2025-01-09

申请号：US18891522

申请日：2024-09-20

Applicant: BYD COMPANY LIMITED

Inventor： Long WAN ,  Zhipei LU ,  Qingbo PENG ,  Zhijia TAN ,  Jianqiang LI

IPC: H01M50/242 ,  B32B5/12 ,  B32B15/14 ,  B32B15/18 ,  B60L50/64 ,  H01M50/224 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  H01M50/249

Abstract: A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle. The battery protection bottom plate comprises an upper fiber reinforced resin layer, a metal plate, a fiber reinforced resin frame, and a lower fiber reinforced resin layer; the metal plate and the fiber reinforced resin frame are located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer; the metal plate is located inside the fiber reinforced resin frame; the top surface of the fiber reinforced resin frame is integrally connected to the upper fiber reinforced resin layer; the bottom surface of the fiber reinforced resin frame is integrally connected to the lower fiber reinforced resin layer.

公开(公告)号：US20250007066A1

公开(公告)日：2025-01-02

申请号：US18886350

申请日：2024-09-16

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/224 ,  H01M50/229 ,  H01M50/231

Abstract: The battery pack composite includes a battery pack and a battery protection bottom plate. The battery protection bottom plate includes a metal plate and is disposed below the battery pack. A buffer zone is disposed between the battery pack and the battery protection bottom plate, and the buffer zone and the metal plate satisfying: 0.018 ≤ ( d - 0.4 ) ⁢ h σ * ε ≤ 0 . 0 ⁢ 8 ⁢ 5 , where d is a thickness in mm of the metal plate, σ is a tensile strength in MPa of the metal plate, ε is an elongation at break of the metal plate, and h is a height in mm of the buffer zone.

公开(公告)号：US20250007065A1

公开(公告)日：2025-01-02

申请号：US18886098

申请日：2024-09-16

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/224 ,  H01M50/229 ,  H01M50/231 ,  H01M50/291

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：US20240372198A1

公开(公告)日：2024-11-07

申请号：US18777729

申请日：2024-07-19

Applicant: BYD COMPANY LIMITED

Inventor： Long WAN ,  Zhipei LU ,  Qingbo PENG ,  Zhijia TAN ,  Zenan SUN

IPC: H01M50/242 ,  B60R16/033 ,  H01M50/224 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  H01M50/249

Abstract: The present disclosure discloses a protective plate for a battery pack, a battery pack and a vehicle. The protective plate includes a first fiber-resin composite layer, a metal layer and a buffering layer laminated in sequence.

公开(公告)号：US20240243382A1

公开(公告)日：2024-07-18

申请号：US18622478

申请日：2024-03-29

Applicant: BYD COMPANY LIMITED

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

IPC: H01M10/625 ,  B60L50/60 ,  H01M10/615 ,  H01M10/6571 ,  H01M10/658 ,  H01M50/209 ,  H01M50/224

CPC classification number: H01M10/625 ,  B60L50/60 ,  H01M10/615 ,  H01M10/6571 ,  H01M10/658 ,  H01M50/209 ,  H01M50/224

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：US20240222762A1

公开(公告)日：2024-07-04

申请号：US18604555

申请日：2024-03-14

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/209 ,  B60K1/04 ,  B60L50/60 ,  B60L50/64 ,  B60L58/26 ,  H01M10/052 ,  H01M10/42 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/119 ,  H01M50/244 ,  H01M50/249 ,  H01M50/271 ,  H01M50/317 ,  H01M50/342 ,  H01M50/35 ,  H01M50/383 ,  H01M50/531 ,  H01M50/543

CPC classification number: H01M50/209 ,  B60K1/04 ,  B60L50/64 ,  B60L50/66 ,  H01M10/052 ,  H01M10/425 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/119 ,  H01M50/244 ,  H01M50/249 ,  H01M50/271 ,  H01M50/317 ,  H01M50/342 ,  H01M50/3425 ,  H01M50/35 ,  H01M50/383 ,  H01M50/531 ,  H01M50/543 ,  B60K2001/0405 ,  B60K2001/0438 ,  B60L58/26 ,  H01M2010/4271 ,  H01M2220/20

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.