公开(公告)号：US20230163367A1

公开(公告)日：2023-05-25

申请号：US18075841

申请日：2022-12-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hailin ZOU ,  Peipei CHEN ,  Chang PENG ,  Chengdu LIANG

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0567 ,  H01M4/13

CPC classification number: H01M10/0587 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/021

Abstract: A lithium-ion battery includes an electrode assembly and an electrolyte solution. The electrode assembly includes a negative electrode sheet, a separator and a positive electrode sheet, which are wound into a wound structure in a winding direction. The wound structure includes an arc bending portion. The arc bending portion includes a first bending portion and a second bending portion. A corner lithium plating coefficient β of the lithium-ion battery is set to satisfy 0.015≤ β=R/(R+L) ≤0.95, wherein R is a minimum curvature radius of a convex surface of a negative electrode current collector of the first bending portion, and L is a shortest distance between the convex surface of the negative electrode current collector of the first bending portion and a concave surface of a positive electrode current collector of the second bending portion.

公开(公告)号：US20230125949A1

公开(公告)日：2023-04-27

申请号：US18058760

申请日：2022-11-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peipei CHEN ,  Limei ZHANG ,  Chang PENG ,  Hailin ZOU

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0568 ,  H01M10/0567

Abstract: An electrochemical device includes a positive electrode plate and an electrolyte solution. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer provided on at least one surface of the positive electrode current collector. The positive electrode active material layer contains a positive electrode lithium supplement including one or more of Li2M1O2, Li2M2O3, Li3M3O4, Li5M4O4, and Li6M5O4. M1 includes one or more of Ni, Co, Fe, Mn, Zn, Mg, Ca, and Cu. M2 includes one or more of Mn, Sn, Mo, Ru, and Ir. M3 includes one or more of V, Nb, Cr, and Mo. M4 includes one or more of Fe, Cr, V, and Mo. M5 includes one or more of Co, V, Cr, and Mo. The electrolyte solution contains a lithium salt. A molarity A of the lithium salt satisfies 1.5 mol/L≤A≤4 mol/L.

公开(公告)号：US20240113287A1

公开(公告)日：2024-04-04

申请号：US18539282

申请日：2023-12-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Hailin ZOU ,  Liye LI

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M4/366 ,  H01M4/626 ,  H01M10/0525 ,  H01M10/0567

Abstract: This application provides a lithium-ion battery, including: an electrode assembly and an electrolytic solution. The electrolytic solution may comprise a first lithium salt LixR1(SO2N)xSO2R2, wherein R1 and R2 each independently represent an alkyl with 1 to 20 fluorine atoms or carbon atoms, or a fluoroalkyl with 1 to 20 carbon atoms, or a fluoroalkoxyl with 1 to 20 carbon atoms, and x is an integer of 1, 2, or 3, and a second lithium salt, wherein the second lithium is at least one selected from LiPF6, LiAsF6, or LiBF4, wherein a thickness of the metallic conductive layer, β1, is in a range of 0.52 μm to 2.4 μm, and a mass percentage of the first lithium salt, w, is 5% to 30% based on a total mass of the electrolytic solution.

公开(公告)号：US20240055663A1

公开(公告)日：2024-02-15

申请号：US18491292

申请日：2023-10-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Limei ZHANG ,  Degui WU

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07D327/04

CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07D327/04 ,  H01M2220/20 ,  H01M2300/004

Abstract: The present disclosure relates to an electrolytic solution for a lithium-ion secondary battery including a solvent, additive, and lithium salt. The solvent includes carboxylic ester, and the additive includes fluorosulfonic acid lactone of Formula I in the description. In the electrolytic solution, a content W of carboxylic ester and a content a of fluorosulfonic acid lactone of Formula I satisfy 430.1>1000*a/W>0.163, optionally 202.02>1000*a/w≥1.635, and further optionally 100.059≥1000*a/w≥4.915, where a and W are both in wt % based on a weight of the electrolytic solution. The secondary battery containing the electrolytic solution has excellent quick charging performance and a long cycle life.

公开(公告)号：US20230335799A1

公开(公告)日：2023-10-19

申请号：US18331665

申请日：2023-06-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Liye LI ,  Limei ZHANG

IPC: H01M10/0568 ,  H01M10/0567 ,  H01M10/058 ,  H01M10/0525 ,  H01M50/209

CPC classification number: H01M10/0568 ,  H01M10/0567 ,  H01M10/058 ,  H01M10/0525 ,  H01M50/209 ,  H01M2220/20

Abstract: An electrolyte includes an electrolytic salt having a molar concentration greater than or equal to 1.4 mol/L and an additive including MSO3F (fluorosulfonate salt), where M is one or more metal ions selected from Li+, Na+, K+, Rb+, and Cs+.

公开(公告)号：US20240274877A1

公开(公告)日：2024-08-15

申请号：US18419337

申请日：2024-01-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Degui WU ,  Hailin ZOU

IPC: H01M10/0567 ,  C07D327/04 ,  C07D327/10 ,  C07F7/08 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  C07D327/04 ,  C07D327/10 ,  C07F7/0805 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2300/0025

Abstract: An electrolyte includes a solvent, an additive composition, and a lithium salt. The additive composition includes a compound of formula I and at least one of compounds of formula LI and formula III.




In the formulas, the symbols are as defined in the specification.

公开(公告)号：US20230420751A1

公开(公告)日：2023-12-28

申请号：US18466815

申请日：2023-09-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhenguo ZHANG ,  Chang PENG ,  Sihui WANG ,  Na LIU ,  Jingpeng FAN ,  Dong ZHAO ,  Zhijie YAO

IPC: H01M10/42 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M10/0568

CPC classification number: H01M10/4235 ,  H01M4/366 ,  H01M4/525 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/0568 ,  H01M2004/021

Abstract: A secondary battery includes a positive electrode sheet having a positive electrode active material and a non-aqueous electrolyte. The positive electrode active material includes a central core material and a modification layer disposed on a surface of the central core material. The modification layer including an orthophosphate with a molecular formula Aa+x[PO4]3−y, where A denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, Ba, Ni, Fe, Co, Ti, Al, Cr, V, Nb, and W, 1≤a≤6, and ax=3y. The non-aqueous electrolyte includes a fluorinated phosphate with a molecular formula Bb+m[PO1+cF3-c]c−n, where B denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, and Ba, 1≤b≤2, c denotes 1 or 2, and bm=cn.

公开(公告)号：US20230387463A1

公开(公告)日：2023-11-30

申请号：US18229715

申请日：2023-08-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Hailin ZOU ,  Degui WU

IPC: H01M10/0567 ,  H01M50/204

CPC classification number: H01M10/0567 ,  H01M2220/20 ,  H01M50/204

Abstract: This application relates to a secondary battery including an electrolyte and a positive electrode plate, where the electrolyte may include a compound represented by formula (I):




The positive electrode plate may include a positive electrode active material, where a surface residual lithium content of the positive electrode active material may be 20 ppm to 2,000 ppm.

公开(公告)号：US20230128934A1

公开(公告)日：2023-04-27

申请号：US18086217

申请日：2022-12-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hailin ZOU ,  Peipei CHEN ,  Chang PENG ,  Chengdu LIANG

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

Abstract: The present application provides a lithium ion battery, comprising an electrode assembly and an electrolyte comprising a fluorosulfonate and/or difluorophosphate substance. The lithium ion battery has a gas generation area coefficient during formation, defined as α, with α=M×S/200; wherein M is in the range of 5 mg/cm2-100 mg/cm2; S is the specific surface area of the negative electrode material on the negative electrode current collector and is in the range of 0.1 m2/g-10 m2/g; the lithium ion battery has a gas venting path coefficient defined as β, with β=100/L, wherein L is in the range of L≥50 mm; the mass percentage content w % of the fluorosulfonate and/or difluorophosphate substance in the electrolyte and α and β meet the equation 0.01≤w×β/α≤20.

公开(公告)号：US20230094322A1

公开(公告)日：2023-03-30

申请号：US17981325

申请日：2022-11-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang PENG ,  Peipei CHEN ,  Hailin ZOU

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

Abstract: The present application provides an electrolyte, the electrolyte including a fluorinated metal salt with S═O or P═O; and a titanate with a structural formula Ti—(O—R1)4, where the R1 is selected from one or more of C1-C6 alkyl, C1-C6 halogenated alkyl, C2-C6 alkenyl, C2-C6 alkynyl or C1-C6 silyl, and a secondary battery including the electrolyte, a battery module, a battery pack and a power consumption apparatus.