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：US20240372147A1

公开(公告)日：2024-11-07

申请号：US18770229

申请日：2024-07-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huiling CHEN ,  Zeli WU ,  Changlong HAN ,  Jie GUO ,  Cuiping ZHANG ,  Lei HUANG ,  Wenhao LIU

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

Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The secondary battery includes a positive electrode plate, a negative electrode plate and an electrolytic solution, the negative electrode plate including a negative electrode film layer containing a negative electrode active material; and the electrolytic solution including a boron-containing lithium salt, the boron-containing lithium salt being configured to form a solid electrolyte interface film on the surface of the negative electrode active material, wherein a discharge capacity of the secondary battery is denoted as A in Ah, a mass of the electrolytic solution is denoted as B in g, a mass percentage of the boron-containing lithium salt relative to a total mass of the electrolytic solution is denoted as C %; and the secondary battery satisfies: 1≤B/A≤5, 5×10−6≤B×C %/A≤0.25.

公开(公告)号：US20230411693A1

公开(公告)日：2023-12-21

申请号：US18459033

申请日：2023-08-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Huiling CHEN ,  Jie GUO ,  Lei HUANG ,  Wenhao LIU

IPC: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/66

CPC classification number: H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/661 ,  H01M2004/028

Abstract: A secondary battery includes a positive electrode plate and a non-aqueous electrolyte. The non-aqueous electrolyte includes a compound shown in Formula 1. Based on a total mass of the non-aqueous electrolyte, the compound shown in Formula 1 is present in an amount of A1% by mass. The positive electrode collector has a thickness of H μm. The positive active material layer has an elongation at break of Q %. the positive active material layer has a compaction density of P g/cm3. The secondary battery satisfies: H is from 4 to 14, A1/H is from 0.0015 to 0.20, Q+/A1 is from 1 to 4, and P/A1 is from 2 to 340.

公开(公告)号：US20240274878A1

公开(公告)日：2024-08-15

申请号：US18512056

申请日：2023-11-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Huiling CHEN ,  Jie GUO ,  Lei HUANG ,  Cuiping ZHANG ,  Wenhao LIU

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2010/4292 ,  H01M2300/004

Abstract: The present application refers to a secondary battery, a battery module, a battery pack and an electrical device. The secondary battery includes a battery housing, an electrode assembly contained in the battery housing and a non-aqueous electrolyte, wherein the non-aqueous electrolyte includes a compound represented by Formula I and based on the total mass of the non-aqueous electrolyte, the compound represented by Formula I is present in an amount of A1 by mass; the secondary battery has a group margin B and the secondary battery satisfies: B is from 0.88 to 0.99, B/A1 is from 0.5 to 45. This application can provide a secondary battery having both high group margin design and high safety performance, and meanwhile having good cycle performance and kinetic performance.

公开(公告)号：US20240266617A1

公开(公告)日：2024-08-08

申请号：US18622252

申请日：2024-03-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Jie GUO ,  Huiling CHEN ,  Lei HUANG

IPC: H01M10/42 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/4235 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0025

Abstract: A secondary battery comprises an electrolyte solution and a positive electrode plate, wherein the positive electrode plate comprises a layered material with a molecular formula of LiaNibCocM1aM2eOfAg, wherein 0.8≤a≤1.2, 0 0 and 0.05≤c+x/10≤0.15.

公开(公告)号：US20240014445A1

公开(公告)日：2024-01-11

申请号：US18468906

申请日：2023-09-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN ,  Huiling CHEN ,  Jie GUO ,  Lei HUANG ,  Cuiping ZHANG ,  Wenhao LIU

IPC: H01M10/0568 ,  H01M4/36 ,  H01M4/66 ,  H01M10/0567

CPC classification number: H01M10/0568 ,  H01M4/366 ,  H01M4/661 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0051 ,  H01M2004/027

Abstract: A secondary battery, a battery module, a battery pack and an electrical device containing the same are described. The secondary battery comprises a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte comprises a compound shown in Formula 1, based on the total mass of the non-aqueous electrolyte, the compound shown in Formula 1 is present in an amount of A1% by mass; the negative electrode collector has a thickness of H1 μm, the negative active material layer has a compaction density of P1 g/cm3, and the secondary battery satisfies: H1 is from 3 to 7, A1/H1 is from 0.003 to 0.40 and P1/A1 is from 1 to 90. The secondary battery with a thinned negative electrode collector has low cost, high energy density, high power performance and high safety performance at the same time.