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.

公开(公告)号：US20210313585A1

公开(公告)日：2021-10-07

申请号：US17345134

申请日：2021-06-11

Applicant: Contemporary Amperex Technology Co, Limited

Inventor： Bin XIE ,  Shitong CHEN ,  Zhijie GONG

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

Abstract: The present application provide a spliced lithium strip, preparation method thereof, and related negative electrode plate, battery core, lithium ion battery, battery module, battery pack and apparatus. The spliced lithium strip is formed by splicing two or more base lithium strips, wherein the base lithium strip has a thickness fluctuation of less than 5%; the spliced lithium strip has a spliced area and a non-spliced area alternately distributed along the splicing direction, and the spliced area has a maximum thickness H and the non-spliced area has a minimum thickness L, satisfying  H - L  L × 1 ⁢ 0 ⁢ 0 ⁢ % ≤ 6 ⁢ % .