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：US20210050617A1

公开(公告)日：2021-02-18

申请号：US16976633

申请日：2018-10-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Guobao WANG ,  Jiang LIU ,  Xiaomei LIU ,  Bin XIE

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/04 ,  H01M10/42 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/054

Abstract: A lithium-ion secondary battery and a manufacturing method thereof. A negative electrode plate of the lithium-ion secondary battery is a prelithiated negative electrode plate, a negative electrode active substance is a carbon-based negative electrode material, and the carbon-based negative electrode material and a pre-intercalated lithium metal in the negative electrode plate are lithiated to form a prelithiated compound LiCx, where x=12˜150. A capacity of a unit area of the negative electrode active substance/a capacity of a unit area of a positive electrode active substance=1.2˜2.1. The capacity of a unit area of the negative electrode active substance/(the capacity of a unit area of the positive electrode active substance+an amount of active lithium deintercalatable from the pre-lithiated compound LiCx in a unit area of a negative electrode film)≥1.10.

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：US20240356044A1

公开(公告)日：2024-10-24

申请号：US18534760

申请日：2023-12-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiyang WU ,  Mingjian LIU ,  Keqiang LI ,  Bin XIE

IPC: H01M4/66 ,  H01M4/80 ,  H01M10/04

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M4/80 ,  H01M10/0431

Abstract: The present application provides a composite current collector, including: an organic support layer having an air permeability greater than or equal to 50 s/100 mL; and an electrically conductive layer arranged on one surface of the organic support layer. In this way, the organic support layer can also be used as a separator, thereby increasing the volumetric energy density of a secondary battery using the composite current collector.

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.

公开(公告)号：US20220131127A1

公开(公告)日：2022-04-28

申请号：US17568852

申请日：2022-01-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bin XIE ,  Shitong CHEN ,  Zhijie GONG

IPC: H01M4/04 ,  H01M4/1395

Abstract: The present application provides a device and method for supplementing electrode sheet with lithium. The device for supplementing electrode sheet with lithium includes a rolling mechanism, an electrode sheet providing mechanism, a lithium film providing mechanism and a strip providing mechanism; the rolling mechanism includes two compression rollers; the electrode sheet providing mechanism is used for providing the electrode sheet; the lithium film providing mechanism is used for providing a lithium film, and the lithium film includes a transfer film and a lithium foil, and the lithium foil continuously adheres to the transfer film; the strip providing mechanism is used for providing a strip, and the strip includes a substrate and an adhesion layer, and the adhesion layer can correspond to the active substance layer of the electrode sheet; the rolling mechanism makes the lithium foil adhere to the active substance layer.