公开(公告)号：US20230335807A1

公开(公告)日：2023-10-19

申请号：US18208913

申请日：2023-06-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei HUANG ,  Changlong HAN ,  Zeli WU ,  Bin JIANG

IPC: H01M10/42 ,  H01M10/0569 ,  H01M10/0567

CPC classification number: H01M10/4235 ,  H01M10/0569 ,  H01M10/0567 ,  H01M2300/0037

Abstract: The present application provides an electrolyte solution, a secondary battery and a power consuming device. The electrolyte solution may contain a solvent, an additive and a lithium salt. The solvent may include a first solvent and a second solvent, the first solvent being a cyclic ester solvent, and the second solvent being a linear carboxylic ester solvent. The additive may include a film forming additive. Based on the total mass of the electrolyte solution, the lithium salt may have a mass fraction of W1, the film forming additive may have a mass fraction of W2, and the second solvent may have a mass fraction of W3, which may satisfy the following relationship: 0.2≤(W1+W2)/W3≤0.4.

公开(公告)号：US20240372158A1

公开(公告)日：2024-11-07

申请号：US18773031

申请日：2024-07-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huiling CHEN ,  Changlong HAN ,  Zeli WU ,  Jie GUO ,  Bin JIANG ,  Lei HUANG ,  Cuiping ZHANG

IPC: H01M10/42 ,  H01M10/056

Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The secondary battery includes a positive electrode plate including a positive electrode film layer, a negative electrode plate including a negative electrode film layer, an electrolytic solution, and a solid electrolyte; the solid electrolyte is disposed on a surface of the positive and/or negative electrode film layer and includes a polymer matrix and a first additive, and the first additive is configured to form an interface film on the surface of the positive and/or negative electrode film layer, where a mass percentage of the polymer matrix relative to a total mass of the solid electrolyte is denoted as A %; and a mass percentage of the first additive relative to the total mass of the solid electrolyte is denoted as B %, and the secondary battery satisfies 0.1≤B/A≤19.

公开(公告)号：US20230361352A1

公开(公告)日：2023-11-09

申请号：US18347184

申请日：2023-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Cuiping ZHANG ,  Bin JIANG ,  Zhiyong AI ,  Lei HUANG

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/525 ,  H01M2004/028

Abstract: The present application discloses a lithium-ion battery, which has a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte solution comprising a lithium salt and a solvent, wherein based on the total weight of the electrolyte solution, the percentage by mass of the lithium salt in the electrolyte solution is a %, and the lithium ion battery satisfies 5≤a≤10; and the load on single side of the negative electrode sheet is W grams per 1540.25 mm2, and a and W satisfy 25≤a/W≤50; and the solvent comprises dimethyl carbonate. The lithium ion battery has good safety and high-temperature cycling performance, and also has good kinetic performance.

公开(公告)号：US20230327209A1

公开(公告)日：2023-10-12

申请号：US18208898

申请日：2023-06-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Bin JIANG ,  Changlong HAN ,  Chenghua FU ,  Rui SHEN ,  Yuanyuan LI

IPC: H01M10/0569 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567

CPC classification number: H01M10/0569 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567 ,  H01M2004/021

Abstract: The present application provides a secondary battery, an electrolyte, and an apparatus including the secondary battery. The secondary battery of the present application includes an electrolyte, characterized in that the electrolyte includes an organic solvent, and the organic solvent includes a cyclic carbonate and a chain carbonate; the mass ratio of the cyclic carbonate and the chain carbonate is from 25:75 to 32:68; the chain carbonate includes dimethyl carbonate; the mass percentage of the dimethyl carbonate in the chain carbonate is greater than or equal to 9 wt % and less than 50 wt %; wherein based on the total mass of the organic solvent, the mass percentage of a carboxylic acid ester is less than 5 wt %. The secondary battery of the present application can simultaneously obtain excellent low-temperature power, long service life and cycle performance.

公开(公告)号：US20230163357A1

公开(公告)日：2023-05-25

申请号：US18145541

申请日：2022-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jie GUO ,  Changlong HAN ,  Bin JIANG ,  Zeli WU

IPC: H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M2300/004

Abstract: An electrolyte for a secondary battery includes a solvent, a lithium salt, and a film-forming additive. A content of the film-forming additive is 0.1%-10% by mass of a total mass of the electrolyte, and the content of the film-forming additive satisfies:




0.1
 
∗
 


10


-
2


 
≤
 


A
 
∗
 
B


M
 
∗
 


C
 
+
 
N




 
≤
 
3
 
∗


10


-2






. A is a mass percentage of the film-forming additive in the total mass of the electrolyte. B is an electrolyte retention coefficient of the secondary battery, in g/Ah. M is a mass of a positive electrode active material required per unit capacity of the secondary battery, in g/Ah. N is a mass percentage of nickel in the positive electrode active material contained in the secondary battery. and C is a mass percentage of Co in the positive electrode active material contained in the secondary battery.

公开(公告)号：US20240178454A1

公开(公告)日：2024-05-30

申请号：US18408488

申请日：2024-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cuiping ZHANG ,  Changlong HAN ,  Bin JIANG ,  Zeli WU ,  Lei HUANG

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2300/0034 ,  H01M2300/004

Abstract: An electrolytic solution includes a solvent. The solvent includes a compound represented by Formula (1) below, in which R1 is a fluorinated C1 to C6 alkyl or a fluorinated C2 to C6 alkenyl, and R2 and R3 each independently are a hydrogen atom, a fluorine atom, or a fluorinated C1 to C6 alkyl. The solvent further includes ethylene carbonate. Based on a total weight of the solvent, a weight percent of the ethylene carbonate is less than or equal to 25 wt %.