公开(公告)号：US20240322165A1

公开(公告)日：2024-09-26

申请号：US18669469

申请日：2024-05-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang ZHOU ,  Yao Jiang ,  Jiang Liu ,  Baiqing Li

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/64 ,  H01M10/0525

CPC classification number: H01M4/5825 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/582 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028 ,  H01M4/64 ,  H01M10/0525

Abstract: A positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector and having a single-layer or multi-layer structure. When the positive electrode film layer is of the single-layer structure, at least one positive electrode film layer comprises both a first positive electrode active material and a second positive electrode active material with a chemical formula of LiaAxMn1-yRyP1-zCzO4-nDn; and/or, when the positive electrode film layer is of the multi-layer structure, at least one layer of the at least one positive electrode film layer includes both a first and second positive electrode active material. The secondary battery made of the positive electrode sheet has high energy density and high battery cell rate performance.

公开(公告)号：US11824167B2

公开(公告)日：2023-11-21

申请号：US17345077

申请日：2021-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qing Xia ,  Jiang Liu ,  Guobao Wang ,  Xiaomei Liu ,  Yongshou Lin

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/62 ,  H01M4/02

CPC classification number: H01M10/0587 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: The present application discloses a wound electrode assembly, wherein the negative electrode plate thereof includes a negative electrode current collector and a negative active material layer which includes a negative active material disposed on two opposite surfaces of the negative electrode current collector; and the two negative active material layers respectively include active an material layer in an unpaired region and an active material layer in a paired region distributed successively in the length direction of the negative electrode plate, and two active material layers in the unpaired regions are arranged at both ends in the length direction of the negative electrode plate, and a first metallic lithium layer is disposed on the surface of one or both of the active material layers in the unpaired regions, so that to form a first lithium pre-intercalation compound in either or both of the active material layers in the unpaired regions.

公开(公告)号：US20240290973A1

公开(公告)日：2024-08-29

申请号：US18658950

申请日：2024-05-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ying Huang ,  Bin Yao ,  Hong Wang ,  Jiang Liu ,  Zhen Liu

IPC: H01M4/583 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M4/5835 ,  H01M4/366 ,  H01M10/0525 ,  H01M10/0569

Abstract: Provided are an electrode plate, a lithium-ion battery, a battery module, a battery pack, and an electric device. The electrode plates provided in the present disclosure include a current collector and an active substance layer disposed on at least one surface of the current collector, wherein the active substance layer includes a surfactant lithium salt.

公开(公告)号：US20240204356A1

公开(公告)日：2024-06-20

申请号：US18589448

申请日：2024-02-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ze Wu ,  Jiang Liu ,  Jiao Cao ,  Bin Yao ,  Limei Yang ,  Heyang Liu

IPC: H01M50/451 ,  H01M10/052 ,  H01M10/0567 ,  H01M50/411 ,  H01M50/431

CPC classification number: H01M50/451 ,  H01M10/052 ,  H01M10/0567 ,  H01M50/411 ,  H01M50/431

Abstract: Provided is a composite separator for a secondary battery and a secondary battery including the composite separator. The composite separator is characterized by comprising a substrate and a solid organic additive layer provided on at least one surface of the substrate, the solid organic additive layer comprising an organic additive for an electrolyte solution. Additives can be added to the electrolyte solution through the composite separator for a secondary battery of the present application, which can improve the cycle life and safety performance of the battery.

公开(公告)号：US11791460B2

公开(公告)日：2023-10-17

申请号：US18197108

申请日：2023-05-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bin Yao ,  Ying Huang ,  Ruiying Shi ,  Jiang Liu ,  Xuefang Chen

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/66 ,  H01M4/583 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/583 ,  H01M4/5825 ,  H01M4/624 ,  H01M4/663 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20

Abstract: An electrode assembly may comprise a positive electrode plate and a negative electrode plate, wherein a positive electrode active material layer of the positive electrode plate may comprise a positive electrode active material and a quinone compound; and a negative electrode active material layer of the negative electrode plate may comprise a negative electrode active material and a conductive polymer material, wherein based on the mass of the positive electrode active material layer, the mass content of the quinone compound mc % may be 0.5% to 3%; the capacity per gram of the quinone compound may be Capc; the capacity per gram of the positive electrode active material may be Cap; and based on the mass of the negative electrode active material layer, the mass content of the conductive polymer material may be mA %, satisfying the relationship of:





0
.
2

≤




C
⁢
a
⁢

p
C


-
Cap

Cap

×


m
C

/

m
A



≤

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.