公开(公告)号：US20230216049A1

公开(公告)日：2023-07-06

申请号：US17928554

申请日：2021-05-24

Applicant: BYD COMPANY LIMITED

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

IPC: H01M4/58 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/04 ,  H01M4/66 ,  H01M50/103 ,  H01M50/136 ,  H01M50/553

CPC classification number: H01M4/5825 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/0404 ,  H01M4/661 ,  H01M50/103 ,  H01M50/136 ,  H01M50/553 ,  H01M2004/028

Abstract: The present disclosure provides a lithium ion battery, a power battery module, 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:





3
≤
A

=



d
2

⁢
ρ
⁢

C
p

×

(


1.35
L

W

)


≤
850.

公开(公告)号：US20230054089A1

公开(公告)日：2023-02-23

申请号：US17792305

申请日：2020-12-29

Applicant: BYD COMPANY LIMITED

Inventor： Long HE ,  Huajun SUN ,  Yan ZHU ,  Shichao HU

IPC: H01M50/186 ,  H01M50/46 ,  H01M50/358 ,  H01M50/446 ,  H01M50/489 ,  H01M50/531

Abstract: A cell, a battery pack, and an electric vehicle are provided in the present disclosure. The cell includes a hermetical metal housing and at least two hermetical accommodating cavities, multiple electrode core assemblies, and an encapsulation film arranged in the metal housing. The electrode core assemblies are arranged along a first direction. The electrode core assemblies are connected in series. A length of each electrode core assembly extends along the first direction. The electrode core assembly includes an electrode core assembly body and a first electrode and a second electrode configured to lead out a current. The first electrode and the second electrode are respectively arranged on two sides of the electrode core assembly body along the first direction. At least one of the accommodating cavities is defined by the encapsulation film, and the electrode core assembly body is arranged in the accommodating cavity. A length of the cell extends along the first direction. The length of the cell ranges from 400 mm to 2500 mm. A thickness of the cell extends along a second direction perpendicular to the first direction. A ratio of the length to the thickness of the cell ranges from 5 to 250.

公开(公告)号：US20230023909A1

公开(公告)日：2023-01-26

申请号：US17780892

申请日：2020-10-22

Applicant: BYD COMPANY LIMITED

Inventor： Long HE ,  Huajun SUN ,  Zhipei LU ,  Long WAN ,  Yan ZHU

IPC: H01M50/209 ,  H01M50/236 ,  H01M50/244 ,  H01M50/249 ,  H01M50/26

Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a cell array and two first reinforcing plates. The cell array includes a number of cells. Each of the cells is defined with a length L, a thickness D, and a height H between the length L and the thickness D. The number of cells are arranged along a thickness direction, and the cells are adhered to each other by a structural adhesive. The two first reinforcing plates are arranged opposite to each other and are respectively adhered to two surfaces of the cell array along the arrangement direction of the cells, and are configured to constrain relative positions between the cells.

公开(公告)号：US20220181730A1

公开(公告)日：2022-06-09

申请号：US17437348

申请日：2019-07-25

Applicant: BYD COMPANY LIMITED

Inventor： Huajun SUN ,  Zhipei LU ,  Jianglong TANG ,  Wenfeng JIANG ,  Yan ZHU

IPC: H01M50/209 ,  H01M50/249

Abstract: The present disclosure relates to a power battery pack, an energy storage device, an electric vehicle. The power battery pack includes an accommodating device and a plurality of cells, the accommodating device includes a plurality of accommodating regions, and each accommodating region has a first side edge and a second side edge and cells disposed between the first side edge and the second side edge. A distance between the first side edge and the second side edge along a first direction varies with different accommodating regions, each cell includes a first end and a second end, and a distance between the first end and the second end matches a distance between a corresponding first side edge and a corresponding second side edge.

公开(公告)号：US20220126666A1

公开(公告)日：2022-04-28

申请号：US17422130

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 ,  B60L50/60 ,  B60L50/64 ,  H01M50/209 ,  H01M50/249 ,  H01M50/342

Abstract: Provided are a power battery pack and an electric vehicle. The power battery pack includes: a pack body; and a plurality of cells, directly arranged in the pack body. The cell extends from a first side of the pack body to a second side of the pack body, and the first side and the second side are disposed opposite to each other. The first side of the pack body is provided with a first side wall, the second side of the pack body is provided with a second side wall, an end of the cell is supported by the first side wall, and the other end of the cell is supported by the second side wall.

公开(公告)号：US20220077539A1

公开(公告)日：2022-03-10

申请号：US17419443

申请日：2019-07-30

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/383 ,  H01M50/249 ,  H01M50/209 ,  H01M50/30 ,  H01M50/317 ,  H01M10/48 ,  A62C3/07 ,  A62C3/16

Abstract: The present disclosure relates to a battery tray and a power battery pack. The battery tray includes a tray body. The tray body includes a base plate and a side beam, and the side beam is disposed around the base plate and defines, together with the base plate, an accommodating space for battery cells. The base plate is formed therein with an air passage, and the base plate is provided with several inlet vents and at least one exhaust vent. The inlet vent is configured to introduce a flame, smoke or gas discharged from the battery cell into the air passage, and the exhaust vent is configured to discharge the flame, smoke or gas inside the air passage.

公开(公告)号：US20220059901A1

公开(公告)日：2022-02-24

申请号：US17419433

申请日：2019-07-24

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/358 ,  H01M10/48 ,  H01M50/249 ,  A62C3/16 ,  A62C3/08

Abstract: Provided are a battery tray and a power battery pack. The battery tray includes a tray body. The tray body includes a base plate, a side beam, and several partition plates, the side beam is disposed around the base plate and defines, together with the base plate, an accommodating space for battery cells. The partition plates are disposed on the base plate and divide the base plate into several regions for placing the battery cells. The partition plates and the side beam are each formed therein with an air passage and are in communication with each other. The partition plates are provided with several inlet vents, and the side beam is provided with at least one exhaust vent. The inlet vent is configured to introduce a flame, smoke or gas discharged from the battery cell into the air passage.

公开(公告)号：US20210159576A1

公开(公告)日：2021-05-27

申请号：US16627652

申请日：2018-06-25

Applicant: BYD COMPANY LIMITED

Inventor： Xi SHEN ,  Zhipei LU ,  Weixin ZHENG ,  Jia LU ,  Jing TAN ,  Yan ZHU ,  Jianhua ZHU

IPC: H01M50/593 ,  H01M50/209

Abstract: A battery unit includes a battery and an insulation film, the battery includes a battery housing, a battery core disposed inside the battery housing, and a battery cover plate disposed on an end portion of the battery housing; the insulation film is coated on at least one side face of the battery housing, the insulation films on two adjacent battery units are bonded to each other in the preset direction to connect the plurality of battery units together; and the insulation film includes an extension portion, where the extension portion is formed by a top portion of the insulation film which protrudes from the battery cover plate and extends upward, the top plate is disposed on an upper side of the battery unit, a groove is provided on a lower side of the top panel, and at least part of the extension portion is accommodated in the groove.

公开(公告)号：US20200373542A1

公开(公告)日：2020-11-26

申请号：US16968700

申请日：2019-01-29

Applicant: BYD COMPANY LIMITED

Inventor： Mingming ZHANG ,  Qingbo PENG ,  Jia LIU ,  Muqing HUANG ,  Yan ZHU ,  Jianhua ZHU

IPC: H01M2/20 ,  H01M2/10 ,  H01M2/26 ,  B60K1/04

Abstract: An integrated structure for exporting battery power (100), a battery pack (200), and a vehicle (300) are disclosed herein. The integrated structure for exporting battery power (100) includes an end plate (21) as a part of a battery pack housing and a copper bar for leading out two electrodes of a battery (10) to outside of the battery pack housing, where the end plate (21) is made of an insulating material, and the copper bar is encapsulated in the end plate (21) by injection molding, electrical connection portions of the copper bar being exposed.

公开(公告)号：US20190198951A1

公开(公告)日：2019-06-27

申请号：US16327851

申请日：2017-08-14

Applicant: BYD COMPANY LIMITED

Inventor： Zhiwei TONG ,  Qing LAI ,  Jianhua ZHU ,  Yan ZHU

IPC: H01M10/6551 ,  B60L58/24 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6556 ,  H01M2/10 ,  H01M10/658 ,  H01M10/6563 ,  H01M10/625

CPC classification number: H01M10/6551 ,  B60L50/50 ,  B60L58/24 ,  H01M2/10 ,  H01M2/1077 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6563 ,  H01M10/658 ,  H01M2220/20 ,  Y02T10/7005

Abstract: The disclosure relates to a battery module, a power battery pack, and a vehicle. The battery module includes a plurality of intermediate separators stacked in a left and right direction on the battery module, a plurality of cells, a mounting plate provided on a front side of the battery module, and a ventilator fixed on the mounting plate. The intermediate separator is provided with an intermediate heat-dissipation air plate, and an intermediate heat-dissipation air passage passing through a front and rear direction is formed inside the intermediate heat-dissipation air plate. Heat is exchanged between a left side face of the intermediate heat-dissipation air plate and a right side face of a cell on a left side of the intermediate heat-dissipation air plate, and is exchanged between a right side face of the intermediate heat-dissipation air plate and a left side face of a cell on a right side of the intermediate heat-dissipation air plate. The intermediate heat-dissipation air passage has a first tuyere and a second tuyere, a cavity is provided between the mounting plate and a front end face of the cell, the first tuyere leads to the cavity, and the second tuyere is provided on a rear side of the battery module and leads to outside of the battery module. The battery module in the disclosure has high heat dissipation efficiency, and can solve a heat dissipation problem during rapid charge/discharge (charge/discharge in a high rate of 3 to 6C).