公开(公告)号：US12074327B2

公开(公告)日：2024-08-27

申请号：US18052430

申请日：2022-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jiazheng Wang ,  Binyi Chen ,  Xuan Li ,  Na Liu ,  Chuying Ouyang

IPC: H01M4/62 ,  C01B32/205

CPC classification number: H01M4/625 ,  C01B32/205 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40

Abstract: An artificial graphite satisfies: PD5t/PD0.5t≤1.35, where PD5t is a compacted density of the artificial graphite measured under a pressure of 5 ton, and PD0.5t is a compacted density of the artificial graphite measured under a pressure of 0.5 ton.

公开(公告)号：US20230369728A1

公开(公告)日：2023-11-16

申请号：US18337027

申请日：2023-06-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lili Wu ,  Xingbu Chen ,  Xuan Li ,  Jianren Wei ,  Huisen Su ,  Xin Sun

IPC: H01M50/538 ,  H01M10/04

CPC classification number: H01M50/538 ,  H01M10/0409 ,  H01M10/0431

Abstract: Provided are an electrode assembly, a method and system for manufacturing the same, a battery cell, a battery, and an electric apparatus. The electrode assembly includes an electrode member wound along a winding direction, the electrode member includes an electrode body, and the electrode body includes an insulating matrix and a conductive layer disposed on the insulating matrix; and the conductive layer includes a first part coated with an active substance layer and a second part coated with no active substance layer; the second part is provided in a quantity of N, and the N second parts are spaced apart in the winding direction; and in the winding direction, distance between the Mth and (M-1)th second parts is L1., and distance between the Mth and (M+1)th second parts is L2, where both N and M are positive integers, 2 ≤ M ≤ N-1, and 0.95

公开(公告)号：US20230369562A1

公开(公告)日：2023-11-16

申请号：US18359082

申请日：2023-07-26

Applicant: Contemporary Amperex Technology CO., Limited

Inventor： Lili WU ,  Miaomiao Dong ,  Xin Sun ,  Xingbu Chen ,  Xuan Li ,  Liang Yun ,  Peidong Song

IPC: H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/36 ,  H01M4/04

CPC classification number: H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/366 ,  H01M4/0404 ,  H01M2004/021

Abstract: An electrode plate and a method for preparing the electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus are described. The electrode plate includes a current collector and an active substance layer provided on at least one surface of the current collector. The active substance layer includes an active main material and a porous material. The active substance layer has pores, where the pore runs through or not through the active substance layer. Thickness of the active substance layer is x, and distance between two end openings of the pore in a direction perpendicular to the active substance layer is y, where x and y satisfy the following condition: 0.1≤x≤y≤x.

公开(公告)号：US20240186531A1

公开(公告)日：2024-06-06

申请号：US18407439

申请日：2024-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lili Wu ,  Xuan Li ,  Xin Sun ,  Peidong Song ,  Liang Yun ,  Xingbu Chen ,  Miaomiao Dong

IPC: H01M4/80 ,  H01M4/02 ,  H01M4/133 ,  H01M4/88

CPC classification number: H01M4/80 ,  H01M4/133 ,  H01M4/8828 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a positive electrode plate for secondary battery, a manufacturing method thereof, and a secondary battery, battery module, battery pack, and electric apparatus using such positive electrode plate for secondary battery. The positive electrode plate for secondary battery includes a current collector and a positive electrode active substance layer and further includes a porous layer containing a porous carbon material between the current collector and the positive electrode active substance layer.

公开(公告)号：US20230352692A1

公开(公告)日：2023-11-02

申请号：US18324992

申请日：2023-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xuan Li ,  Xin Sun ,  Lili Wu ,  Huisen Su ,  Jianren Wei ,  Xingbu Chen

IPC: H01M4/62 ,  H01M4/587 ,  H01M4/133

CPC classification number: H01M4/628 ,  H01M4/625 ,  H01M4/587 ,  H01M4/133

Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are provided. The secondary battery includes a negative electrode plate, a positive electrode plate, and a separator located between the negative electrode plate and the positive electrode plate. The negative electrode plate or the separator includes a safety coating. A negative electrode charge capacity Nc and a positive electrode charge capacity Pc of the secondary battery satisfy: 0.45≤Nc/Pc