公开(公告)号：US11961969B2

公开(公告)日：2024-04-16

申请号：US17196943

申请日：2021-03-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Chenghua Fu ,  Peipei Chen ,  Junmin Feng

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0037

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive. The nonaqueous solvent is a high oxidation potential solvent, and the additive includes cyclic sulfate. The high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the cyclic sulfate may be selected from one or more of compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

公开(公告)号：US12068457B2

公开(公告)日：2024-08-20

申请号：US17199256

申请日：2021-03-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Junmin Feng ,  Peipei Chen ,  Chenghua Fu ,  Chengdu Liang

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/1391 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/1391 ,  H01M10/0568 ,  H01M2220/20 ,  H01M2300/0022 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: This application provides a lithium-ion battery, a battery module, a battery pack, and an apparatus. The lithium-ion battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes Li1+xNiaCobMe(1−a−b)O2−cYc, where −0.1≤x≤0.2, 0.8≤a

公开(公告)号：US12107227B2

公开(公告)日：2024-10-01

申请号：US17196797

申请日：2021-03-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Chenghua Fu ,  Peipei Chen ,  Junmin Feng

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/4235 ,  H01M2004/028 ,  H01M4/505 ,  H01M4/525 ,  H01M2300/0037 ,  H01M2300/004

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive. The nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the additive is a fluorinated cyclic carbonate. The carbonate solvent is a linear carbonate, or a mixture of linear carbonate and cyclic carbonate, the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the fluorinated cyclic carbonate is selected from compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

公开(公告)号：US11949073B2

公开(公告)日：2024-04-02

申请号：US17132591

申请日：2020-12-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peipei Chen ,  Chenghua Fu ,  Junmin Feng ,  Chengdu Liang

IPC: H01M10/00 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/40 ,  H01M4/02

CPC classification number: H01M10/0569 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M50/40 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/004

Abstract: This application provides a nonaqueous electrolytic solution, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolytic solution includes a nonaqueous solvent and a lithium salt. The nonaqueous solvent includes a carbonate solvent and a high-oxidation-potential solvent. The carbonate solvent is a mixture of a cyclic carbonate and a chain carbonate, and the high-oxidation-potential solvent is selected from one or more of compounds denoted by Formula I and Formula II. This application improves electrochemical performance of the lithium-ion battery under a high temperature and a high voltage as well as safety performance such as overcharge safety and hot-oven safety of the lithium-ion battery, and also ensures kinetic performance of the lithium-ion battery to some extent.

公开(公告)号：US11901511B2

公开(公告)日：2024-02-13

申请号：US17189084

申请日：2021-03-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peipei Chen ,  Chengdu Liang ,  Chenghua Fu ,  Junmin Feng

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0037

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive, where the nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the additive includes cyclic sulfate. The high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the cyclic sulfate may be selected from one or more of compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.