公开(公告)号：US11942600B2

公开(公告)日：2024-03-26

申请号：US17565474

申请日：2021-12-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yongkun Li ,  Kai Wu ,  Bo Cheng ,  Feng Ju

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/42

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/4235 ,  H01M2300/0025

Abstract: In the embodiments of the present application, an electrolyte, a lithium-ion battery comprising the electrolyte, a battery module, a battery pack, and a device are provided. The electrolyte in the embodiments of the present application comprises an organic solvent, an electrolyte lithium salt dissolved in the organic solvent, and an additive comprising a first additive and a second additive. The first additive is selected from one or more of the compounds represented by formula I, and the second additive is selected from one or more of the compounds represented by formula II. After applying the electrolyte of the present application to a lithium-ion battery, the lithium ion battery has a better cycle performance and storage performance at a high temperature, and lower direct-current impedance at a low temperature, such that the lithium ion battery has both a better high-temperature performance and a better low-temperature performance.

公开(公告)号：US10826121B2

公开(公告)日：2020-11-03

申请号：US15891197

申请日：2018-02-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Feng Ju ,  Shaowei Feng ,  Changlong Han ,  Xiaochong Zhou ,  Ming Zhang

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

Abstract: The present disclosure provides an electrolyte and a secondary battery. The electrolyte comprises: a non-aqueous organic solvent; an electrolyte salt dissolved in the non-aqueous organic solvent; and an additive dissolved in the non-aqueous organic solvent. The additive comprises a first additive, the first additive is selected from boron phosphate represented by formula 1. When the electrolyte of the present disclosure is applied in the secondary battery, the performances of the secondary battery under high temperature environment can be effectively improved.

公开(公告)号：US20190006704A1

公开(公告)日：2019-01-03

申请号：US16000775

申请日：2018-06-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Feng Ju ,  Changlong Han ,  Shaojie Tian ,  Cui Zhang ,  Chenghua Fu

IPC: H01M10/0525 ,  H01M4/525 ,  H01M4/1391 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2/14

Abstract: The present disclosure provides an electrolyte and a lithium-ion battery, the electrolyte comprises an electrolyte salt, an organic solvent and an additive. The organic solvent comprises ethylene carbonate, dimethyl carbonate and ethyl methyl carbonate. The additive comprises a boron-based or phosphorus-based lithium oxalate, a fluorinated lithium phosphate and one or two selected from a group consisting of vinylene carbonate and fluoroethylene carbonate. The electrolyte of the present disclosure can improve the cycle performances under both room temperature fast charging and high temperature fast charging, the power performances under both room temperature and low temperature and the storage performance under high temperature of the lithium-ion battery at the same time.

公开(公告)号：US20220216517A1

公开(公告)日：2022-07-07

申请号：US17702645

申请日：2022-03-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yongkun LI ,  Kai Wu ,  Bo Cheng ,  Feng Ju

IPC: H01M10/0567 ,  H01M10/0525

Abstract: This application provides an electrolyte for lithium-ion battery, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The electrolyte includes an organic solvent, an electrolytic lithium salt dissolved in the organic solvent, and additives, where the additives include a first additive and a second additive. The first additive includes an alkenyl dioxaborolane compound represented by formula I or formula II, and the second additive includes phosphoric acid cyclic anhydride represented by formula III. After the electrolyte of this application is applied to a lithium-ion battery, the lithium-ion battery can, at high voltage, have a good high-temperature cycling performance and high-temperature storage performance, a low direct current resistance, as well as good high-voltage characteristics.