公开(公告)号：US11855304B2

公开(公告)日：2023-12-26

申请号：US17488352

申请日：2021-09-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mianyu Xie ,  Guangjun Wang

IPC: H01M50/536 ,  H01M50/105 ,  H01M10/04

CPC classification number: H01M50/536 ,  H01M10/045 ,  H01M50/105

Abstract: Provided is a secondary battery, comprising an electrode assembly, a packaging bag, and electrode leads. The electrode assembly is accommodated in the packaging bag and comprises a first electrode member, a second electrode member and a separator. The separator separates the first electrode member from the second electrode member. The first electrode member comprises an insulating substrate, a conductive layer, an active material layer and a conductive structure. The conductive layer is provided on the surface of the insulating substrate, and the conductive layer is provided with a first portion and a second portion. The first portion is coated with the active material layer. The second portion is not coated with the active material layer. The conductive structure is welded to the second portion to form a first welding area. The electrode leads are connected to the conductive structure and extend to the outside of the packaging bag.

公开(公告)号：US20220021085A1

公开(公告)日：2022-01-20

申请号：US17488352

申请日：2021-09-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mianyu Xie ,  Guangjun Wang

IPC: H01M50/536 ,  H01M50/105 ,  H01M10/04

Abstract: Provided is a secondary battery, comprising an electrode assembly, a packaging bag, and electrode leads. The electrode assembly is accommodated in the packaging bag and comprises a first electrode member, a second electrode member and a separator. The separator separates the first electrode member from the second electrode member. The first electrode member comprises an insulating substrate, a conductive layer, an active material layer and a conductive structure. The conductive layer is provided on the surface of the insulating substrate, and the conductive layer is provided with a first portion and a second portion. The first portion is coated with the active material layer. The second portion is not coated with the active material layer. The conductive structure is welded to the second portion to form a first welding area. The electrode leads are connected to the conductive structure and extend to the outside of the packaging bag.

公开(公告)号：US20220123301A1

公开(公告)日：2022-04-21

申请号：US17565438

申请日：2021-12-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Guangjun Wang

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/583

Abstract: This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: 7.5 ≤ 3460 ED - ( D ⁢ ⁢ 50 - D C ⁢ 50 × 0.75 - T 18 ) ≤ 11.5 , where ED≥270 Wh/Kg, 11 μm≤D50≤18.5 μm, 11 μm≤DC50≤20 μm. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.

公开(公告)号：US12051818B2

公开(公告)日：2024-07-30

申请号：US17139811

申请日：2020-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangjun Wang ,  Yonghuang Ye ,  Jiawel Zheng ,  Shaojun Niu

IPC: H01M50/242 ,  H01M50/209 ,  H01M50/211 ,  H01M50/291

CPC classification number: H01M50/242 ,  H01M50/209 ,  H01M50/211 ,  H01M50/291

Abstract: This application discloses a battery cushion and a forming method thereof, and a battery module and a forming method thereof. The battery cushion includes a body and breakable bubbles. The breakable bubbles are disposed in the body. The breakable bubbles include at least a first bubble and a second bubble. A breaking pressure of the first bubble is less than a breaking pressure of the second bubble, so that the battery cushion can release a space occupied by the battery cushion in a progressive manner under different external forces. The battery cushion disclosed in this application can not only achieve a pre-tightening force required during assembly of the battery module but also effectively relieve an expansive force generated during working of the battery module.

公开(公告)号：US20230369556A1

公开(公告)日：2023-11-16

申请号：US18346794

申请日：2023-07-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiao Chen ,  Guangjun Wang ,  Yonghuang Ye

IPC: H01M4/04 ,  H01M4/66 ,  H01M4/02

CPC classification number: H01M4/0404 ,  H01M4/661 ,  H01M2004/021

Abstract: Provided are a secondary battery which includes a positive electrode sheet, a negative electrode sheet, and a separator placed between the positive electrode sheet and the negative electrode sheet. In some embodiments, the positive electrode sheet includes a positive electrode current collector and positive film layers A1 and B1 respectively provided on two surfaces of the positive electrode current collector, and the negative electrode sheet includes a negative electrode current collector and negative film layers respectively provided on two surfaces of the negative electrode current collector, where capacities per unit area Cap A1 and Cap B1 of the positive film layers A1 and B1 satisfy Cap A1

公开(公告)号：US11626589B2

公开(公告)日：2023-04-11

申请号：US17565438

申请日：2021-12-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Guangjun Wang

IPC: H01M4/525 ,  H01M50/489 ,  H01M50/491 ,  H01M50/449 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/583 ,  H01M4/587 ,  H01M4/02

Abstract: This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: 7.5 ≤ 3460 ED - ( D ⁢ 50 - D C ⁢ 50 × 0.75 - T 18 ) ≤ 11.5 , where ED≥270 Wh/Kg, 11 μm≤D50≤18.5 μm, 11 μm≤DC50≤20 μm. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.

公开(公告)号：US20210126317A1

公开(公告)日：2021-04-29

申请号：US17139811

申请日：2020-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangjun Wang ,  Yonghuang Ye ,  Jiawei Zheng ,  Shaojun Niu

IPC: H01M50/242 ,  H01M50/291 ,  H01M50/209

Abstract: This application discloses a battery cushion and a forming method thereof, and a battery module and a forming method thereof. The battery cushion includes a body and breakable bubbles. The breakable bubbles are disposed in the body. The breakable bubbles include at least a first bubble and a second bubble. A breaking pressure of the first bubble is less than a breaking pressure of the second bubble, so that the battery cushion can release a space occupied by the battery cushion in a progressive manner under different external forces. The battery cushion disclosed in this application can not only achieve a pre-tightening force required during assembly of the battery module but also effectively relieve an expansive force generated during working of the battery module.