公开(公告)号：US11133559B2

公开(公告)日：2021-09-28

申请号：US16474992

申请日：2017-12-01

Applicant: BYD COMPANY LIMITED

Inventor： Jialing Hu ,  Jun Shan ,  Long He

IPC: H01M50/44 ,  B01D69/14 ,  B01D71/34 ,  B01D71/40 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/403

Abstract: A polymer composite membrane, a method for fabricating same, and a lithium-ion battery including same are provided. The polymer composite membrane includes a porous base membrane and a heat-resistant layer covering at least one side surface of the porous base membrane, the heat-resistant layer includes a plurality of heat-resistant sub-layers sequentially stacked, and pore-blocking temperatures of the heat-resistant sub-layers are sequentially increased from inside to outside; each of the heat-resistant sub-layers includes at least one of a first heat-resistant polymer material and a second heat-resistant polymer material, and each of the heat-resistant sub-layers is separately configured as a fiber network structure; the melting point of the first heat-resistant polymer material is not less than 200° C.; and the melting point of the second heat-resistant polymer material is not less than 100° C.

公开(公告)号：US11264674B2

公开(公告)日：2022-03-01

申请号：US16328601

申请日：2017-08-14

Applicant: BYD Company Limited

Inventor： Jialing Hu ,  Jun Shan ,  Jinxiang Wu ,  Long He

IPC: H01M50/417 ,  H01M50/454 ,  H01M50/426 ,  H01M50/491 ,  H01M50/434 ,  H01M50/42

Abstract: The disclosure relates to the field of lithium-ion batteries, and discloses a polymer composite membrane and a method for preparing same. The disclosure further includes a lithium-ion battery for which the foregoing polymer composite membrane is used. The polymer composite membrane includes a porous base membrane and a heat-resistant fiber layer covering at least one side surface of the porous base membrane, where materials of the heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

公开(公告)号：US11258129B2

公开(公告)日：2022-02-22

申请号：US17019852

申请日：2020-09-14

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

IPC: H01M2/10 ,  H01M2/36 ,  B60L50/64 ,  H01M50/20 ,  H01M50/60

Abstract: A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups , and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.

公开(公告)号：US10790544B1

公开(公告)日：2020-09-29

申请号：US16707831

申请日：2019-12-09

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

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

Abstract: 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：US10115939B2

公开(公告)日：2018-10-30

申请号：US15013831

申请日：2016-02-02

Applicant: BYD COMPANY LIMITED

Inventor： Long He ,  Haiquan Wang ,  Hong Xiao ,  Deding Gou

IPC: H01M2/04 ,  H01M2/06 ,  H01M2/30 ,  H01M2/22

Abstract: A battery cover plate assembly and a battery having the same are provided. The battery cover plate includes: a cover plate (1); an insulation sheet (3) comprising an insulation sheet body (30) defining first and second ends (301, 302) and a limitation portion (31) disposed at the second end (302) of the insulation sheet body (30) and defining a limitation space (32) with a lower surface of the insulation sheet body (30); and a negative connection sheet (2) comprising a riveting portion (21) and a negative tab connection portion (22) defining a limitation end (221), in which the riveting portion (21) is connected to the insulation sheet (3) and the cover plate (1) via a rivet (4), and the limitation end (221) is inserted into the limitation space (32).

公开(公告)号：US20240222763A1

公开(公告)日：2024-07-04

申请号：US18604560

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 ,  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 ,  B60L58/26

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.

公开(公告)号：US11223090B2

公开(公告)日：2022-01-11

申请号：US16328993

申请日：2017-08-14

Applicant: BYD COMPANY LIMITED

Inventor： Jialing Hu ,  Jun Shan ,  Gang Hu ,  Long He

IPC: H01M50/449 ,  B32B27/12 ,  B32B9/00 ,  B32B7/12 ,  B32B7/00 ,  H01M50/44 ,  H01M50/411 ,  H01M50/431 ,  H01M50/46 ,  B32B27/00 ,  H01M10/052 ,  H01M50/403 ,  H01M10/0525

Abstract: The disclosure provides a polymer composite membrane, a method for preparing same, and a lithium-ion battery including same. The polymer composite membrane includes a polymer base membrane, where the polymer base membrane includes a first surface and a second surface disposed opposite to each other, and the polymer composite membrane further includes a first ceramic layer, a first heat-resistant fiber layer, and a first bonding layer disposed sequentially from inside out on the first surface of the polymer base membrane, where materials of the first heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

公开(公告)号：US11183729B2

公开(公告)日：2021-11-23

申请号：US17048947

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: H01M50/209 ,  H01M50/249 ,  H01M50/383 ,  B60K1/04

Abstract: A battery pack, a vehicle, and an energy storage device. The battery pack includes a housing with a first direction and a second direction perpendicular to the first direction. The battery pack housing includes at least one rectangular cell accommodating unit is formed therein. The battery pack also includes a plurality of rectangular cells, and has a dimension greater than or equal to 600 mm along the first direction. The plurality of rectangular cells are arranged in the rectangular cell accommodating unit along the second direction. The rectangular cell has a thickness of D, length of L, and height of H. A length direction of at least one rectangular cell extends from one side of the rectangular cell accommodating unit to its other side along the first direction, and meets: L>H, L>D, 600 mm≤L≤2500 mm, 23≤L/D≤208.

公开(公告)号：US10777791B1

公开(公告)日：2020-09-15

申请号：US16707837

申请日：2019-12-09

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

IPC: H01M2/10 ,  H01M2/36 ,  B60L50/64

Abstract: A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups, and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.

公开(公告)号：US10529868B2

公开(公告)日：2020-01-07

申请号：US14738409

申请日：2015-06-12

Applicant: BYD COMPANY LIMITED

Inventor： Zhiqiang Zhao ,  Zhanfeng Jiang ,  Long He

IPC: H02N6/00 ,  H01L31/042 ,  H01L31/02 ,  H01L31/048 ,  H01L31/05 ,  H01L31/0224 ,  H01L31/18 ,  H01L31/049

Abstract: A solar cell array comprises a plurality of cells, adjacent cells connected by a metal wire. At least one metal wire extends reciprocally between a surface of a first cell and a surface of a second cell adjacent to the first cell to form a plurality of conductive wires. The number of the conductive wires is n, y−y×20%≤n≤y+y×20%, in which n is an integer and y=4.0533X−1.28/1562*A*B, in which X is a diameter value of the metal wire with mm as a unit, 0.1≤X≤0.5, A and B representing length and width of the cell with mm as the unit. The cells comprise secondary grid lines disposed on front surfaces thereof. The conductive wires are welded with the secondary grid lines by a welding layer.