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：US20240282937A1

公开(公告)日：2024-08-22

申请号：US18648369

申请日：2024-04-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Liang Yun ,  Xin Sun ,  Lili Wu ,  Peidong Song ,  Miaomiao Dong

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/587 ,  H01M4/60

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M4/606 ,  H01M2004/021 ,  H01M2004/027

Abstract: Provided is a pore-forming agent for secondary battery and a preparation method thereof, a negative electrode plate, an electrode assembly, and a secondary battery. The pore-forming agent for secondary battery includes a one-dimensional conductive material and stable-state lithium metal particles, where the stable-state lithium metal particles are loaded on the one-dimensional conductive material.

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