公开(公告)号：US20230313347A1

公开(公告)日：2023-10-05

申请号：US18330490

申请日：2023-06-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianwei PAN ,  Shitong CHEN ,  Bin XIE ,  Fenggang ZHAO

IPC: C22C24/00

CPC classification number: C22C24/00

Abstract: A lithium strip that can be used in lithium supplementation equipment is described. The lithium strip has a first surface, and a thinned area is formed at the edge of the first surface along the width direction of the lithium strip to form a space for accommodating a release agent at the thinned area. The thinned area is designed to enable the lithium strip to pick up more release agent when it is applied to a coating device, and the release agent can remain in the above thinned area. The presence of the thinned area in the lithium strip can reduce the lithium load per unit width, so that during the calendering process of the lithium strip, there will be no calendering exceeding the preset width, so that the lithium strip will not stick to the roller after calendering.

公开(公告)号：US20240243245A1

公开(公告)日：2024-07-18

申请号：US18435895

申请日：2024-02-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shitong CHEN ,  Bin XIE ,  Yi LU ,  Xinlu FEI ,  Keqiang LI ,  Fenggang ZHAO

IPC: H01M4/04

CPC classification number: H01M4/0435

Abstract: An electrode plate forming apparatus includes an unwinding device, a lithium replenishment device, a plurality of winding devices and a protection device. The lithium replenishment device is configured to clad a lithium strip to a surface of a master electrode plate body and form a master electrode plate. A slitting device is configured to slit the master electrode plate into a plurality of electrode plates. The winding devices are configured to pull the electrode plates to travel, each of the winding devices winding one corresponding electrode plate. The slitting device is disposed in an accommodating cavity of the protection device. The protection device is configured to at least partially separate particles from an external environment in a case that the slitting device slits the master electrode plate and generates the particles.

公开(公告)号：US20220158177A1

公开(公告)日：2022-05-19

申请号：US17587504

申请日：2022-01-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shitong CHEN ,  Bin XIE ,  Zhao HU ,  Zhijie GONG ,  Wen LI ,  Lin MA

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/134 ,  H01M4/133 ,  H01M4/587

Abstract: A negative electrode plate, a lithium-ion battery and an apparatus are disclosed. The negative electrode plate includes a negative electrode current collector, a negative electrode active material layer including a negative electrode active material and disposed on at least one surface of the negative electrode current collector, and a lithium-replenishing layer disposed on a surface of the negative electrode active material layer away from the negative current collector. The negative electrode plate can effectively ameliorate the problem of plate heating, and channels formed by the lithium-replenishing region and the gap region can enable the lithium-ion battery to be effectively impregnated with the electrolyte after electrolyte injection is performed to the lithium-ion battery, thereby improving the energy density of the battery while also improving the service life and kinetic performance of the battery.

公开(公告)号：US20220140311A1

公开(公告)日：2022-05-05

申请号：US17575164

申请日：2022-01-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shitong CHEN ,  Zhijie GONG ,  Bin XIE ,  Lin MA

IPC: H01M4/04 ,  H01M4/1395

Abstract: A device for supplementing an electrode sheet with lithium and a method for supplementing electrode sheet with the lithium. The device includes two first rolling wheels, a second rolling wheel, a lithium ribbon providing mechanism, a first transfer film conveying mechanism, a second transfer film conveying mechanism and an electrode sheet providing mechanism; the two first rolling wheels are opposite each other, and the second rolling wheel is adjacent to the first rolling wheel; the lithium ribbon providing mechanism is used for feeding a lithium ribbon between the second rolling wheel and the first rolling wheel; the first transfer film conveying mechanism is used for conveying a first transfer film carrying a first release agent and transferring the first release agent to the lithium ribbon; the electrode sheet providing mechanism is used for providing the electrode sheet.

公开(公告)号：US20230127246A1

公开(公告)日：2023-04-27

申请号：US18086431

申请日：2022-12-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yongqiang XU ,  Xinlu FEI ,  Bin XIE ,  Shitong CHEN ,  Keqiang LI ,  Tao FENG ,  Fenggang ZHAO

IPC: H01M4/04 ,  H01M10/0587 ,  G01B11/04

Abstract: This application discloses a lithiation device for applying a lithium film on an electrode plate. The lithiation device includes: a rolling mechanism including a first roller and a second roller, the two rollers configured to roll the electrode plate and the lithium film to apply the lithium film on the electrode plate; an adjustment mechanism connected to the rolling mechanism and configured to adjust a gap and/or a rolling force between the first roller and the second roller; a first monitoring mechanism configured to monitor a length of the electrode plate after the electrode plate passes through the rolling mechanism; and a controller configured to control the adjustment mechanism based on a comparison result of the length monitored by the first monitoring mechanism and a target length so that the length of the electrode plate after the electrode plate passes through the rolling mechanism approximates to the target length.

公开(公告)号：US20220069275A1

公开(公告)日：2022-03-03

申请号：US17523463

申请日：2021-11-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shitong CHEN ,  Bin XIE ,  Xinlu FEI ,  Yongqiang XU ,  Yuzhe ZHANG ,  Lin MA

IPC: H01M4/04 ,  H01M4/134 ,  H01M4/1395

Abstract: A device for supplementing an electrode plate with lithium and a method for supplementing an electrode plate with lithium. The device for supplementing an electrode plate with lithium includes a first lithium strip unwinding mechanism, an electrode plate unwinding mechanism, a roller pressing mechanism, a first traction mechanism, an electrode plate winding mechanism, and a first coating mechanism. The first lithium strip unwinding mechanism is configured to dispose a lithium strip, and the electrode plate unwinding mechanism is configured to dispose an electrode plate. The roller pressing mechanism includes a first calendering roller, a first laminating roller, and a second laminating roller. In a traveling direction of the lithium strip, the first coating mechanism precedes the roller pressing mechanism, and the first coating mechanism is configured to apply a coating layer on a surface of the lithium strip.

公开(公告)号：US20230411670A1

公开(公告)日：2023-12-21

申请号：US18239127

申请日：2023-08-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bin XIE ,  Shitong CHEN ,  Yi LU ,  Yuanyuan SHEN ,  Keqiang LI ,  Fenggang ZHAO

IPC: H01M10/04

CPC classification number: H01M10/0409

Abstract: The present application provides a pole piece forming apparatus, which may include an incoming structure, a slitter, a plurality of winders and a wrinkle remover. The incoming structure may provide a master pole piece. The slitter may slit the master pole piece into a plurality of pole pieces. The winders may pull the transport of the pole pieces, respective winding devices may wind one corresponding pole piece, and the slitter may be disposed between the incoming structure and the winders. The wrinkle remover may be arranged between the slitter and the winders. The wrinkle remover may include a first roller and a second roller that may be provided opposite to each other, the first roller may include a first rolling part, and the first rolling part and the second roller may be used for rolling an edge of a slitting edge of the pole piece.

公开(公告)号：US20230352648A1

公开(公告)日：2023-11-02

申请号：US18220301

申请日：2023-07-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinlu FEI ,  Bin XIE ,  Fenggang ZHAO ,  Shitong CHEN ,  Yongqiang XU ,  Tao FENG ,  Keqiang LI

IPC: H01M4/38 ,  H01M4/04

CPC classification number: H01M4/0435 ,  H01M4/382

Abstract: A prelithiation device may comprise: a bonding structure comprising a first roller, a second roller and a third roller, which may be sequentially disposed adjacent to each other, the first roller and the second roller being used to roll the lithium ribbon, the rolled lithium ribbon adhering to the second roller, and the second roller and the third roller being used to bond the lithium ribbon adhering to the second roller to the substrate, the lithium ribbon comprising two first surfaces opposite each other in a width direction of the lithium ribbon and a second surface facing the second roller; and a coater disposed upstream of the bonding structure in a running direction of the lithium ribbon and configured to simultaneously coat the second surface and at least one of the first surfaces with a release agent.

公开(公告)号：US20210210750A1

公开(公告)日：2021-07-08

申请号：US17057290

申请日：2020-04-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shitong CHEN ,  Bin XIE ,  Zhijie GONG ,  Zhao HU ,  Lin MA

IPC: H01M4/36 ,  H01M10/0525

Abstract: The application relates to the field of lithium ion battery technology and, more particularly, relates to a lithium-supplement layer and its negative electrode sheet, a lithium ion battery and a device. The lithium-supplement layer is formed by connecting a transition layer, an oxide layer and a surface layer in sequence, the surface layer contains an appropriate amount of an organic material and a filling substance, which can reduce a winding temperature of the negative electrode sheet, the oxide layer substance in the lithium-supplement layer is used to provide an additional lithium source, after injection, the lithium source can be continuously supplemented during the cycle process to improve the activity of a lithium layer, at the same time, the filling substance contained in the surface layer can effectively play a role of restraining the expansion of an active substance, and improve the battery cycle performance.

公开(公告)号：US20220199964A1

公开(公告)日：2022-06-23

申请号：US17568344

申请日：2022-01-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bin XIE ,  Shitong CHEN ,  Zhijie GONG

IPC: H01M4/04 ,  H01M4/139 ,  H01M10/0585

Abstract: The lithium film forming mechanism includes a first separator providing mechanism, a second separator providing mechanism, a lubricating substance applying mechanism, a lithium ribbon providing mechanism and two rollers; the first separator providing mechanism provides a first separator for the two rollers; the second separator providing mechanism provides a second separator for the two rollers; the lithium ribbon providing mechanism locates a lithium ribbon between the first separator and the second separator and provides the lithium ribbon for the two rollers; the lubricating substance applying mechanism applies lubricating substances to surfaces, facing the lithium ribbon, of the first separator and/or the second separator before entering the space between the two rollers; and the two rollers roll the first separator, the lithium ribbon and the second separator, to roll the lithium ribbon into lithium foil and make the lithium foil adhere to the second separator to form the lithium film.