公开(公告)号：US10910652B2

公开(公告)日：2021-02-02

申请号：US16209459

申请日：2018-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Xin Liu ,  Zuyu Wu ,  Qisen Huang

IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/02 ,  H01M4/75

Abstract: A current collector, an electrode plate, and an electrochemical device are provided in the present disclosure. The current collector includes an insulation layer and at least one conductive layer. The insulation layer is used to support the conductive layer. The at least one conductive layer is used to support an electrode active material layer and is located above at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. A metal protective layer is arranged on at least one surface of each of the at least one conductive layer.

公开(公告)号：US10954589B2

公开(公告)日：2021-03-23

申请号：US16249983

申请日：2019-01-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zuyu Wu ,  Zhen Liu ,  Keqiang Li ,  Long Zhou ,  Guodong Li ,  Taosheng Zhu

IPC: C23C8/12 ,  H01M4/66 ,  H01M10/0525

Abstract: The present disclosure relates to a current collector production apparatus for producing a current collector. The current collector includes a current collector substrate, a conductive layer disposed on at least one surface of the current collector substrate. The current collector production apparatus includes an oven having a space where the current collector is to be heated, and a passivation ozone knife having a current collector injection port. The current collector injection port is configured to release ozone in such a manner that the ozone reacts with a surface material of the conductive layer, so as to form a passivation layer. The passivation ozone knife is disposed inside the oven. The current collector produced in the present disclosure can prevent HF in electrolyte from reacting with Al, so as to solve a problem of detachment of active material from the current collector and maintain the performance of lithium-ion battery.

公开(公告)号：US10714757B2

公开(公告)日：2020-07-14

申请号：US16209377

申请日：2018-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Huafeng Huang ,  Zuyu Wu ,  Qisen Huang

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02 ,  H01M10/052

Abstract: The present disclosure provides a current collector, an electrode plate and a battery. The current collector includes an insulation layer and at least one conductive layer located on at least one surface of the insulation layer. The insulation layer is used to support the conductive layer, and the conductive layer is used to support an electrode active material layer. The conductive layer has a thickness of D2, and 300 nmD22 μm. The current collector further includes a protective layer provided on a surface of the conductive layer facing towards the insulation layer. The current collector according to the present disclosure can increase a short-circuit resistance in case of short circuit caused by the battery being abnormal, thereby resulting in protective effect on the conductive layer, and can also increase the bonding force between the insulation layer and the conductive layer, thereby increasing mechanical strength of the current collector.

公开(公告)号：US11135673B2

公开(公告)日：2021-10-05

申请号：US16282898

申请日：2019-02-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Congmiao Wu ,  Zhiqiang Guo ,  Zuyu Wu ,  Jianfeng Li ,  Guodong Li ,  Taosheng Zhu

IPC: B23K20/10 ,  H01M4/66 ,  H01M4/64 ,  B23K101/38

Abstract: The present disclosure relates to a welding device and a processing apparatus for a secondary battery current collector. The welding device includes: a welding head; and an anvil block. A welding station is disposed between the welding head and the anvil block. The welding device is configured to weld a foil to a portion of a composite current collector at the welding station. According to this solution, the foil can be used as a tab of the composite current collector by using the foil to connect with the composite current collector so as to output the current in the battery cell.

公开(公告)号：US20190218654A1

公开(公告)日：2019-07-18

申请号：US16249983

申请日：2019-01-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zuyu Wu ,  Zhen Liu ,  Keqiang LI ,  Long Zhou ,  Guodong Li ,  Taosheng Zhu

IPC: C23C8/12 ,  H01M4/66 ,  H01M10/0525

CPC classification number: C23C8/12 ,  H01M4/661 ,  H01M4/664 ,  H01M4/667 ,  H01M10/0525

Abstract: The present disclosure relates to a current collector production apparatus for producing a current collector. The current collector includes a current collector substrate, a conductive layer disposed on at least one surface of the current collector substrate. The current collector production apparatus includes an oven having a space where the current collector is to be heated, and a passivation ozone knife having a current collector injection port. The current collector injection port is configured to release ozone in such a manner that the ozone reacts with a surface material of the conductive layer, so as to form a passivation layer. The passivation ozone knife is disposed inside the oven. The current collector produced in the present disclosure can prevent HF in electrolyte from reacting with Al, so as to solve a problem of detachment of active material from the current collector and maintain the performance of lithium-ion battery.

公开(公告)号：US10826072B2

公开(公告)日：2020-11-03

申请号：US16370974

申请日：2019-03-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jinwei Lin ,  Zuyu Wu ,  Keqiang Li ,  Congmiao Wu ,  Taosheng Zhu

IPC: H01M4/66 ,  H01M10/0525

Abstract: The present application discloses a current collector, an electrode plate, and an electrochemical device. The current collector comprises: a support layer comprising opposite two surfaces along the thickness direction thereof; a conductive layer disposed on at least one of the two surfaces of the support layer; wherein the support layer comprises a support material selected from one or more of a polymer material and a polymer matrix composite material, and wherein the light transmittance T of the support layer is 0≤T≤98%. The current collector, electrode plate and electrochemical device provided by the present application have good processability.

公开(公告)号：US10403878B2

公开(公告)日：2019-09-03

申请号：US15255772

申请日：2016-09-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Keqiang Li ,  Zuyu Wu ,  Wutang Zhang

IPC: H01M4/04 ,  H01M4/134 ,  H01M4/38 ,  H01M4/1395 ,  H01M10/0525

Abstract: The present invention provides a method and a system for supplying lithium to an electrode plate. The method includes: compositing a first substrate and a first lithium strip to form a first composite lithium strip, and forming an obstruction using a second substrate between the first lithium strip and a compositing device, compositing the first composite lithium strip and an electrode plate to be supplied with lithium to form a lithium supplied composite electrode plate, during the compositing process, the first substrate in the first composite lithium strip is located at a side away from the electrode plate to be supplied with lithium, peeling and reeling the first substrate from the lithium supplied composite electrode plate, to form a lithium supplied electrode plate.