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：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.