公开(公告)号：EP4525167A1

公开(公告)日：2025-03-19

申请号：EP23802600.9

申请日：2023-04-19

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  YUAN, Wansong ,  CHENG, Han ,  PAN, Qiu ,  LI, Kai

IPC: H01M50/342 ,  H01M50/249 ,  H01M50/258

Abstract: A vehicle has a battery pack. The battery pack includes batteries or a battery module. The battery module includes batteries. Each battery includes a battery casing and an explosion-proof valve. The explosion-proof valve is arranged on the battery casing. The explosion-proof valve is provided with a notch groove. The explosion-proof valve includes an opening area. In the depth direction of the notch groove, the shape of the orthographic projection of the opening area is non-circular. An outer edge of the orthographic projection of the opening area is a preset opening boundary, an area of the orthographic projection of the opening area being S 1 , the area of the orthographic projection of the explosion-proof valve being S , S 1 and S meeting: S 1 / S ≥ 0.3, and the units of S 1 and S both are mm 2 .

公开(公告)号：EP4525165A1

公开(公告)日：2025-03-19

申请号：EP23802995.3

申请日：2023-05-11

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  CHEN, Chong ,  CHENG, Han

IPC: H01M50/317 ,  H01M50/35

Abstract: A battery cell (1), a battery pack (2) and a vehicle (4). The battery cell (1) comprises: a first recess (140) and a plurality of second recesses (150) that are constructed on the inner wall surface of a second side wall (130) and are concave in the direction facing away from an inner cavity (110) the first recess (140) forms an inner main air passage (141) in the inner cavity (110), the plurality of second recesses (150) form a plurality of branch air passages (151) in the inner cavity (110), the plurality of branch air passages (151) are separately communicated with the main air passage (141), the second side wall (130) is provided with an explosion-proof hole (160) corresponding to the position of the main air passage (141); an explosion-proof valve (300) mounted on the second side wall (130); and an electrode core (400) provided in a housing (100) and spaced apart from the explosion-proof hole (160).

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：EP4343953A1

公开(公告)日：2024-03-27

申请号：EP22845195.1

申请日：2022-07-13

Applicant: BYD Company Limited

Inventor： RONG, Liangbin ,  PAN, Qiu ,  WANG, Xinyue ,  CHENG, Han ,  YUAN, Wansong

IPC: H01M50/528 ,  H01M50/533 ,  H01M50/536 ,  H01M50/538 ,  H01M10/04

Abstract: The present disclosure discloses a cylindrical battery, which includes a casing, having an accommodating space; and a negative electrode sheet, a first separator, a positive electrode sheet and a second separator that are wound multiple turns to define an electrode core. The casing is co-axial with the electrode core. The electrode core is at least partially received in the accommodating space. The positive electrode sheet includes a positive electrode material layer and a positive electrode foil layer. The negative electrode sheet includes a negative electrode material layer and a negative electrode foil layer. At least some of the wound turns of the electrode foil layer extends toward one end of the casing to form a positive electrode tab. At least some of the wound turns of the negative electrode foil layer extends toward the other end of the casing to form the negative electrode tab. As a result, a portion of the positive electrode end surface of the electrode core that is not covered by the positive electrode tab is located at at least a side of the positive electrode tab, and a portion of the negative electrode end surface of the electrode core that is not covered by the negative electrode tab is located at at least a side of the negative electrode tab.

公开(公告)号：EP3961800A1

公开(公告)日：2022-03-02

申请号：EP21193317.1

申请日：2021-08-26

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  ZHANG, Da ,  LUO, Wen

IPC: H01M50/538 ,  H01M50/54 ,  H01M50/536 ,  H01M10/0585 ,  H01M10/0587

Abstract: The present invention provides a battery and a battery pack. The battery includes a cell. The cell has at least one pole core. Each pole core has a plurality of tabs. The plurality of tabs are converged and then soldered to a cover plate of the battery to form a solder joint. When the pole core is parallel to the cover plate before convergence or after the pole core is unfolded, a spacing between the pole core and the solder joint is determined by a thickness of the pole core, a tab bending angle of the tab, and a width of a tab protection plate at the solder joint.

公开(公告)号：EP3961798A1

公开(公告)日：2022-03-02

申请号：EP21193350.2

申请日：2021-08-26

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  DUAN, Pingan ,  CHENG, Han

IPC: H01M50/531 ,  H01M50/536 ,  H01M50/538 ,  H01M10/058

Abstract: The present invention provides a battery core, a battery, and a battery pack. The battery core includes: at least one core, where each core has a plurality of tabs, the plurality of tabs successively form, after being converged, a tab end-portion staggered layer region, a tab soldering region, and a pre-soldered press-fit region, parts of the plurality of tabs exposed out of the core form a tab exposure region, and a length of the tab exposed out of the core in the tab exposure region is determined according to a width of the tab end-portion staggered layer region, a width of the tab soldering region, a width of the pre-soldered press-fit region, a thickness of the core, and a tab bending angle of the tab. Such a setting can make the length of the tab exposed out of the core in the tab exposure region more appropriate, and can prevent the tab after bending prevented from being pulled and torn, so as to avoid a capacity loss of the battery core. Moreover, the movable length of the tab can be made appropriate, the bending space can be made appropriate, and therefore, the capacity loss of the battery core can be avoided. In addition, the tab can be prevented from being compressed, so as to improve the safety of the battery core in use.

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：EP3916831A1

公开(公告)日：2021-12-01

申请号：EP20746030.4

申请日：2020-01-21

Applicant: BYD Company Limited

Inventor： WANG, Xinyue ,  CHENG, Han ,  ZHU, Yan

IPC: H01M2/04 ,  H01M10/0525

Abstract: The present invention provides a battery unit, a battery module, and a vehicle. The battery unit includes a housing (1), a cover plate (2), a first battery post (31), a second battery post (32), and an electrode core (4). The housing (1) is provided with an opening. The cover plate (2) covers the opening. The electrode core (4) is disposed inside the housing (1). The cover plate (2) includes a cover plate body (21) and a concave cavity portion (22) that is concave inward relative to an outer surface of the cover plate body (21). The first battery post (31) is accommodated in the concave cavity portion (22). A first electrode tab of the electrode core (4) is electrically connected to the first battery post (31). The second battery post (32) is electrically connected to the cover plate body (21). A second electrode tab of the electrode core (4) is electrically connected to the cover plate body (21).