公开(公告)号：US20230378539A1

公开(公告)日：2023-11-23

申请号：US18228335

申请日：2023-07-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN

IPC: H01M10/0568 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0585

CPC classification number: H01M10/0568 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0585 ,  H01M2004/028

Abstract: A secondary battery includes an electrolyte solution and a positive electrode plate. The positive electrode plate includes a layered material with a molecular formula of LiaNibCocM1dM2eOfAg, where M1, M2, A, a, b, c, d, e, f, and g are defined herein. The electrolyte solution includes a compound including a phosphorus-oxygen double bond that includes one or more of lithium difluorophosphate, diethyl (2-cyanoethyl)phosphonate, tripropyl phosphoric anhydride, diethyl acetyl phosphate, and triphenyl phosphate. Based on a total mass of the electrolyte solution, a percentage mass content x % of the compound including a phosphorus-oxygen double bond satisfies 0

公开(公告)号：US20230117520A1

公开(公告)日：2023-04-20

申请号：US18072720

申请日：2022-12-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/0568 ,  H01M4/58

Abstract: The present application provides an electrolytic solution, a secondary battery, and a power consumption apparatus. The electrolytic solution may include a solvent and an additive; the solvent may include a compound of formula I, and a mass percentage of the compound of formula I in the solvent may be 35% or more; in formula I, R1 and R2 are each independently selected from any one of a hydrogen atom, a C1-C3 chain alkyl group, and a C2-C3 alkenyl group; and the additive may include a compound of formula II, and in formula II, R3, R4, and R5 are each independently selected from any one of a hydrogen atom, a fluorine atom, a phenyl group, a cyano group, a C1-C6 chain alkyl group, a C3-C6 cyclic alkyl group, and a C2-C6 alkenyl group.

公开(公告)号：US20240356079A1

公开(公告)日：2024-10-24

申请号：US18760768

申请日：2024-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jie GUO ,  Changlong HAN ,  Zeli WU ,  Guan WANG

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/491

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/491 ,  H01M2300/004

Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are described. The secondary battery includes a positive electrode plate comprising a positive electrode active material, a negative electrode plate comprising a negative electrode active material, a separator being disposed between the positive electrode plate the negative electrode plate and an electrolytic solution, comprising a first organic solvent and a film-forming additive and the film-forming additive being configured to form an interface film on the surface of the positive electrode active material and/or negative electrode active material, wherein a porosity of the separator is denoted as 8%; a mass percentage of the film-forming additive relative to a total mass of the electrolytic solution is denoted as b %; and a viscosity of the electrolytic solution at 25° C. is denoted as c in mPa·s, and the secondary battery satisfies: 4≤ (b*ε)/c≤240.

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.

公开(公告)号：US20230378538A1

公开(公告)日：2023-11-23

申请号：US18228223

申请日：2023-07-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN

IPC: H01M10/0568 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M10/0568 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  H01M4/505 ,  H01M2300/004 ,  H01M2004/028

Abstract: A non-aqueous electrolyte includes an electrolyte salt and a non-aqueous solvent. The electrolyte salt includes a first lithium salt, a second lithium salt, and a third lithium salt, and the content A1 of the first lithium salt, the content A2 of the second lithium salt, and the content A3 of the third lithium salt, based on a total mass of the non-aqueous electrolyte, satisfy that: A1+A2+A3 is below 1%, A1/A2 is from 0.016 to 40, and A1/(A2+A3) is from 0.006 to 13.5.

公开(公告)号：US20220255123A1

公开(公告)日：2022-08-11

申请号：US17730247

申请日：2022-04-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changlong HAN ,  Zeli WU ,  Chenghua FU

IPC: H01M10/0525 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0567 ,  H01M4/525 ,  H01M4/583

Abstract: The present application provides a secondary battery and an apparatus containing the same. The secondary battery includes: a negative electrode plate including a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector, the negative electrode film including a negative active material; and an electrolyte including an electrolyte salt, an organic solvent, and an additive; wherein the negative active material includes a silicon-based material; the additive includes an additive A and an additive B; the additive A is selected from one or more of the compounds shown in Formula 1; the additive B is selected from one or more in the compound shown in Formula 2; the additive B has melting point of below or equal to 5° C.

公开(公告)号：US20220181696A1

公开(公告)日：2022-06-09

申请号：US17598149

申请日：2019-12-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli WU ,  Changlong HAN

IPC: H01M10/0569 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/134 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M10/0525

Abstract: The application provides a secondary battery and an apparatus including the same. The secondary battery includes a negative electrode plate and an electrolyte; the negative electrode plate includes a negative current collector and a negative electrode film disposed on at least one surface of the negative current collector and including a negative active material; and the electrolyte includes electrolyte salt and an organic solvent, where the negative active material includes a silicon-based material; and the organic solvent contains ethylene carbonate (EC) and ethyl methyl carbonate (EMC), a weight ratio of the ethylene carbonate (EC) in the organic solvent is less than or equal to 10%, and a weight ratio of the ethyl methyl carbonate (EMC) in the organic solvent is 70% to 95%. The secondary battery and the apparatus including the same can simultaneously have good high-temperature storage performance and high-temperature cycle performance.

公开(公告)号：US20220059867A1

公开(公告)日：2022-02-24

申请号：US17516504

申请日：2021-11-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Liye LI ,  Zeli WU ,  Changlong HAN ,  Chenghua FU

IPC: H01M10/0525 ,  H01M4/38 ,  H01M4/583 ,  H01M4/04 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505

Abstract: The application provides a secondary battery and a device including the same. The second battery includes: a negative electrode plate, the negative electrode plate including a negative active material; a separation film, the separation film including a base material and a coating arranged on at least one surface of the base material; and an electrolyte, the electrolyte including an organic solvent, where the negative active material includes a silicon-based material and a carbon material; thickness of the base material of the separation film is 7 μm˜12 μm; and the organic solvent includes ethylene carbonate, and a weight ratio of the ethylene carbonate in the organic solvent is ≤20%. The secondary battery and the device including the same, which are provided by the application, in the premise of having high energy density, can also have good high-temperature cycle performance, good high-temperature storage performance, and low low-temperature direct current resistance.