公开(公告)号：US20240405207A1

公开(公告)日：2024-12-05

申请号：US18789709

申请日：2024-07-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Limei Zhang ,  Peipei Chen ,  Hailin Zou ,  Jiao Liu

IPC: H01M4/36 ,  C07F5/02 ,  C07F5/04 ,  H01M4/02 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42

Abstract: This application provides a secondary battery, and providing a battery module, a battery pack, and a powder device comprising the same. The secondary battery includes a positive electrode plate and a non-aqueous electrolytic solution, in which the positive electrode plate includes a positive electrode active material having a core-shell structure, said positive electrode active material includes an inner core and a shell covering the core, said core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, said shell includes a first coating layer covering said core, a second coating layer covering said first coating layer, and a third coating layer covering said second coating layer. The secondary battery of the present application can have a relatively high energy density, and also a good rate performance, cycling performance, storage performance and safety performance.

公开(公告)号：US20240332622A1

公开(公告)日：2024-10-03

申请号：US18648384

申请日：2024-04-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ningbo Xu ,  Hailin Zou ,  Peipei Chen

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

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0028

Abstract: This application relates to a secondary battery including a silicate ester and/or a derivative thereof, where the silicate ester and/or the derivative thereof includes a




structure in a cyclic or non-cyclic structure or a




structure in a cyclic structure. This application further relates to a battery pack including the secondary battery and an electric apparatus including the secondary battery or the battery pack.

公开(公告)号：US20240283027A1

公开(公告)日：2024-08-22

申请号：US18638759

申请日：2024-04-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peipei Chen ,  Limei Zhang ,  Yao Jiang ,  Jiao Liu

IPC: H01M10/0567 ,  H01M4/36 ,  H01M4/505 ,  H01M4/58

CPC classification number: H01M10/0567 ,  H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M2300/0025

Abstract: The present application provides a secondary battery and a battery module, battery pack and electrical device containing the same. The secondary battery comprises a positive electrode plate and an non-aqueous electrolytic solution, wherein the positive electrode plate comprises a positive electrode active material with a core-shell structure, said positive electrode active material comprising an core and a shell covering said core, said core has a chemical formula of Li1+xMn1-yAyP1-zRzO4; said shell comprises a first cladding layer covering said core, a second cladding layer covering said first cladding layer and a third cladding layer covering said second cladding layer, said non-aqueous electrolytic solution comprises a first additive, said first additive comprises one or more of compounds as shown by Formula 1, Formula 2 and Formula 3.

公开(公告)号：US11961969B2

公开(公告)日：2024-04-16

申请号：US17196943

申请日：2021-03-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Chenghua Fu ,  Peipei Chen ,  Junmin Feng

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

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2220/20 ,  H01M2300/0037

Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive. The nonaqueous solvent is a high oxidation potential solvent, and the additive includes cyclic sulfate. The high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the cyclic sulfate may be selected from one or more of compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.

公开(公告)号：US20220123368A1

公开(公告)日：2022-04-21

申请号：US17566699

申请日：2021-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Peipei Chen ,  Chenghua Fu ,  Chang Peng

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M4/60

Abstract: The present application relates to a secondary battery, comprising: a positive electrode plate, a negative electrode plate, a separator disposed between the positive electrode plate and the negative electrode plate, and an electrolyte solution, the negative electrode plate including a negative electrode current collector and a negative electrode active material layer provided on at least one side of the negative electrode current collector, and the electrolyte solution including an organic solvent and a lithium salt, wherein the negative electrode active material comprises a core structure and a polymer network coating layer coated on at least a part of the surface of the core structure.

公开(公告)号：US20240413400A1

公开(公告)日：2024-12-12

申请号：US18811812

申请日：2024-08-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Limei Zhang ,  Peipei Chen ,  Jiao Liu

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/36 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525

Abstract: The present application provides a secondary battery, a battery module, a battery pack and an electrical device containing the same. The secondary battery comprises a positive electrode plate, and a non-aqueous electrolytic solution, wherein the positive electrode plate comprises a positive electrode active material with a core-shell structure, and the positive electrode active material comprises a core and a shell covering the core, the core comprises Li1+xMn1−yAyP1−zRzO4, the shell comprises a first cladding layer covering the core and a second cladding layer covering the first cladding layer, and the non-aqueous electrolytic solution comprises a first additive comprising one or more of the compounds shown in Formula 1. The present application enables the secondary battery to simultaneously have high energy density with good rate performance, cycling performance, storage performance and safety performance. O═C═N—R1—N═C═O  Formula 1

公开(公告)号：US20240322260A1

公开(公告)日：2024-09-26

申请号：US18731354

申请日：2024-06-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hailin Zou ,  Peipei Chen

IPC: H01M10/42 ,  C07D213/79 ,  C07F9/50 ,  H01M10/0525 ,  H01M10/054 ,  H01M50/417 ,  H01M50/426 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489

CPC classification number: H01M10/4235 ,  C07D213/79 ,  C07F9/5004 ,  C07F9/5022 ,  H01M10/0525 ,  H01M10/054 ,  H01M50/417 ,  H01M50/426 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489 ,  H01M2220/20

Abstract: The present application provides a secondary battery and an electrical apparatus containing the same. The secondary battery includes a positive electrode sheet, a negative electrode sheet, a separator disposed between the positive electrode sheet and the negative electrode sheet, and an electrolyte solution, wherein the separator includes a substrate and an inorganic and/or organic particle layer disposed on at least one surface of the substrate, and the separator further includes an acid scavenging additive located among the inorganic and/or organic particles of the inorganic and/or organic particle layer or located in a form of a separate layer between the substrate and the inorganic and/or organic particle layer, wherein the maximum dissolution amount of the acid scavenging additive in the electrolyte solution at 25° C. is less than 1% by mass relative to the mass of the electrolyte solution.

公开(公告)号：US20240283026A1

公开(公告)日：2024-08-22

申请号：US18622884

申请日：2024-03-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ningbo Xu ,  Hailin Zou ,  Peipei Chen

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/4235

Abstract: A secondary battery includes an additive. The structure of the additive is R1—X—R0, where X is one of carbon, nitrogen, silicon, phosphorus, and sulfur; R0 includes one or two non-polar groups; and R1 is a polar chain group or a polar cyclic group, where the chain group includes one or more of double bond, triple bond, and silicon-oxygen bond, and the cyclic group includes one or more of three-membered heterocycle, four-membered heterocycle, five-membered heterocycle, and six-membered heterocycle.

公开(公告)号：US20240282948A1

公开(公告)日：2024-08-22

申请号：US18638703

申请日：2024-04-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Limei Zhang ,  Peipei Chen ,  Jiao Liu

IPC: H01M4/505 ,  H01M4/02 ,  H01M4/36 ,  H01M4/58 ,  H01M4/583 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M4/505 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/583 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application provides a secondary battery, a battery module, a battery pack, and an electric apparatus. The secondary battery includes a positive electrode plate and a non-aqueous electrolyte. The positive electrode plate includes a positive electrode active material having a core-shell structure, the positive electrode active material including a core and a shell enveloping the core. A chemical formula of the core is Li1+xMn1−yAyP1-zRzO4. A is one or more elements selected from Zn, Al, Na, K, Mg, Mo, W, Ti, V, Zr, Fe, Ni, Co, Ga, Sn, Sb, Nb and Ge. R is one or more elements selected from B, Si, N, and S. The first coating layer includes a crystalline pyrophosphate LiaMP2O7 and/or Mb(P2O7)c. The second coating layer includes a crystalline phosphate XPO4. The third coating layer is carbon. The non-aqueous electrolyte includes a first solvent, the first solvent including one or more of the compounds represented by formula 1.

公开(公告)号：US20240274810A1

公开(公告)日：2024-08-15

申请号：US18608952

申请日：2024-03-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Limei Zhang ,  Peipei Chen ,  Chang Peng ,  Jiao Liu

IPC: H01M4/505 ,  C01B25/45 ,  H01M4/02 ,  H01M4/1315 ,  H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M4/505 ,  C01B25/45 ,  H01M4/1315 ,  H01M4/133 ,  H01M4/366 ,  H01M4/587 ,  H01M10/0567 ,  H01M10/0568 ,  C01P2006/40 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A secondary battery, a battery module, a battery pack, and an electric device. The secondary battery includes a cathode piece and a non-aqueous electrolyte, in which, the cathode piece includes a cathode active material, and the cathode active material has a chemical formula represented by LiaAxMn1-yByP1-zCzO4-nDn; the non-aqueous electrolyte includes a first lithium salt and a first additive, optionally, the first lithium salt is one or more selected from the group consisting of LiN(CmF2m+1SO2)(CnF2n+1SO2) and Li(FSO2)2N, m and n represent positive integers; the first additive includes one or more of a compound represented by Formula 1. Using the cathode active material and/or a combination of the cathode active material and the non-aqueous electrolyte improves the rate performance, cycle performance, and high temperature stability of the lithium manganese phosphate secondary battery.