公开(公告)号：US20240222762A1

公开(公告)日：2024-07-04

申请号：US18604555

申请日：2024-03-14

申请人： BYD COMPANY LIMITED

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

IPC分类号： 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分类号： 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

摘要： 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：US20240145760A1

公开(公告)日：2024-05-02

申请号：US18398471

申请日：2023-12-28

申请人： BYD COMPANY LIMITED

发明人： Yi PAN ,  Yongjun MA ,  Zizhu GUO ,  Liangjun WANG ,  Huajun SUN

IPC分类号： H01M10/052 ,  H01M4/02 ,  H01M4/04 ,  H01M4/38 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/44 ,  H01M50/249

CPC分类号： H01M10/052 ,  H01M4/0416 ,  H01M4/0435 ,  H01M4/382 ,  H01M4/386 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/44 ,  H01M50/249 ,  H01M2004/027 ,  H01M2220/20

摘要： A lithium battery includes a positive electrode plate, a negative electrode plate, a separator located between the positive electrode plate and the negative electrode plate, and an electrolyte solution. The negative electrode material layer of the negative electrode plate includes a lithium-silicon composite negative electrode active material. The negative electrode material layer has a protective layer on the surface or the lithium-silicon composite negative electrode active material has a protective layer on the surface. The protective layer includes a polymer matrix and a lithium salt. When the lithium battery is fully charged, the lithium-silicon composite negative electrode active material includes elemental lithium and a lithium-silicon alloy Li4.4Si, and the elemental lithium accounts for 15%-95% by mole of the lithium-silicon composite negative electrode active material.

公开(公告)号：US20220393321A1

公开(公告)日：2022-12-08

申请号：US17892609

申请日：2022-08-22

申请人： BYD COMPANY LIMITED

发明人： Huajun SUN ,  Gaowu WANG ,  Guoxiong LIU ,  Yan ZHU

IPC分类号： H01M50/583 ,  H01M50/209 ,  H01M50/51 ,  H01M50/509 ,  H01M50/55 ,  H01M50/249 ,  B60L50/64

摘要： A battery pack includes at least one battery unit. The battery unit includes at least one battery string. The battery string includes one or at least two cells. A voltage difference across the battery string is less than or equal to 60 V. When the battery string includes at least two cells, the cells in the battery string are arranged sequentially along a first direction, and the first direction is parallel to a direction from the tail of the vehicle to the head of the vehicle.

公开(公告)号：US20220123404A1

公开(公告)日：2022-04-21

申请号：US17421883

申请日：2019-06-21

申请人： BYD COMPANY LIMITED

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

IPC分类号： H01M50/209 ,  B60K1/04 ,  B60L50/64 ,  B60L50/60 ,  H01M50/249 ,  H01M10/052

摘要： 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：US20220118840A1

公开(公告)日：2022-04-21

申请号：US17421875

申请日：2019-06-21

申请人： BYD COMPANY LIMITED

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

IPC分类号： B60K1/04 ,  B60L50/64 ,  B60L50/60 ,  H01M50/317 ,  H01M50/249 ,  H01M50/209 ,  H01M50/119

摘要： A power battery pack includes: a pack body; a plurality of cells, disposed in the pack body; the cell having a length L0, a width H0, and a thickness D0, where at least one cell meets: L0>H0≥D0, 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, the length L0 of the cell and a size W of the vehicle body of the electric vehicle in the width direction meet: 46%≤L0/W≤76%; or at least one cell meets: L0>H0≥D0, 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 length L0 of the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L0/W≤76%.

公开(公告)号：US20210126293A1

公开(公告)日：2021-04-29

申请号：US17017461

申请日：2020-09-10

申请人： BYD COMPANY LIMITED

发明人： Chuanfu WANG ,  Long HE ,  Huajun SUN ,  Zhipei LU ,  Jianhua ZHU ,  Yan ZHU ,  Shichao HU

IPC分类号： H01M10/42 ,  H01M2/10 ,  H01M2/36 ,  H01M10/0525 ,  H01M10/0585

摘要： The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

公开(公告)号：US20230198068A1

公开(公告)日：2023-06-22

申请号：US17972120

申请日：2022-10-24

申请人： BYD COMPANY LIMITED

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

IPC分类号： H01M50/24 ,  H01M50/30 ,  H01M50/505 ,  H01M50/211 ,  H01M50/509 ,  H01M50/569 ,  H01M50/291 ,  H01M50/249 ,  B60K1/04

CPC分类号： H01M50/24 ,  H01M50/394 ,  H01M50/505 ,  H01M50/211 ,  H01M50/509 ,  H01M50/569 ,  H01M50/291 ,  H01M50/249 ,  B60K1/04 ,  H01M2220/20

摘要： A 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, and 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.

公开(公告)号：US20230093575A1

公开(公告)日：2023-03-23

申请号：US18070850

申请日：2022-11-29

申请人： BYD COMPANY LIMITED

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

IPC分类号： H01M10/0587 ,  H01M10/0525 ,  H01M50/531 ,  H01M4/70 ,  H01M4/66 ,  H01M50/103

摘要： The present disclosure provides a lithium ion battery, 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

公开(公告)号：US20230079318A1

公开(公告)日：2023-03-16

申请号：US17991693

申请日：2022-11-21

申请人： BYD COMPANY LIMITED

发明人： Huajun SUN ,  Yan ZHU

IPC分类号： H01M50/289 ,  H01M50/249 ,  H01M50/271 ,  H01M50/51 ,  H01M50/512 ,  H01M50/211 ,  H01M50/121 ,  H01M50/124 ,  B60L50/64

摘要： This application provides a battery pack, a vehicle, and an energy storage device. The battery pack includes at least one battery sequence. The battery sequence includes a plurality of batteries. A thickness of each battery extends along a first direction. The plurality of batteries are successively arranged along the first direction to form the battery sequence. At least one of the batteries includes a casing and a core packaged in the casing. A gap exists between at least two neighboring batteries. A ratio of the gap to the thickness of the battery is c, and c satisfies the following relational expression: c/a=0.01-0.5, where a represents an expansion rate of the battery.

公开(公告)号：US20230040013A1

公开(公告)日：2023-02-09

申请号：US17792658

申请日：2021-01-04

申请人： BYD COMPANY LIMITED

发明人： Long HE ,  Huajun SUN ,  Shichao HU ,  Zhiyong AO ,  Yan ZHU

IPC分类号： H01M50/24 ,  H01M50/249 ,  H01M50/271 ,  H01M50/30 ,  H01M50/51 ,  H01M50/224

摘要： A battery pack and an electric vehicle are provided. The battery pack includes a battery sequence. The battery sequence includes multiple cells. A thickness of each cell extends along a first direction. The multiple cells are arranged in sequence along the first direction to form the battery sequence. At least one of the cells includes a metal shell and an electrode core packaged in the metal shell. An air pressure inside the metal shell is lower than an air pressure outside the metal shell. A gap is provided between at least two adjacent cells. A ratio of the gap to the thickness of the cell ranges from 0.001 to 0.15.