公开(公告)号：US20240421299A1

公开(公告)日：2024-12-19

申请号：US18813066

申请日：2024-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

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 comprises Li1+xMn1−yAyP1−zRzO4; said shell comprises a first cladding layer covering said core and a second cladding layer covering said first 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. The present application enables the secondary battery to have higher energy density while having good rate performance, cycle performance, storage performance and safety performance.

公开(公告)号：US20240322141A1

公开(公告)日：2024-09-26

申请号：US18736548

申请日：2024-06-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M4/583 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025

Abstract: Provided are a secondary battery, a battery module, a battery pack, and an electrical apparatus. The secondary battery comprises a positive electrode plate and a non-aqueous electrolyte solution, where the positive electrode plate comprises a positive electrode active material having a core-shell structure and comprising an inner core and a shell cladding the inner core, where the inner core has a chemical formula of Li1+xMn1−yAyP1−zRzO4, a first cladding layer comprises crystalline pyrophosphates LiaMP2O7 and/or Mb(P2O7)c, a second cladding layer comprises a crystalline phosphate XPO4, and a third cladding layer is carbon; and the non-aqueous electrolyte solution comprises a first additive comprising one or more compounds in the group consisting of a compound represented by formula 1, a compound represented by formula 2, and a compound represented by formula 3, thereby improving rate performance, cycling performance, and high-temperature stability of a lithium manganese phosphate secondary battery.

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：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：US20240322142A1

公开(公告)日：2024-09-26

申请号：US18736563

申请日：2024-06-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/42

CPC classification number: H01M4/366 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/4235 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0037

Abstract: Provided are a secondary battery, a battery module, a battery pack and an electrical apparatus. The secondary battery includes a positive electrode plate and a non-aqueous electrolyte solution. A positive electrode active material includes an inner core and a shell cladding the inner core. The inner core includes Li1+xMn1−yAyP1−zRzO4. The shell includes a first cladding layer cladding the inner core and a second cladding layer cladding the first cladding layer. The first cladding layer includes pyrophosphate MP2O7 and phosphate XPO4. The second cladding layer includes carbon. The non-aqueous electrolyte solution includes a first additive. The first additive includes one or more compounds in a group consisting of a compound shown in Formula 1, a compound shown in Formula 2 and a compound shown in Formula 3. The rate performance, cycling performance and high temperature stability of a lithium manganese phosphate secondary battery are increased.

公开(公告)号：US20240234709A1

公开(公告)日：2024-07-11

申请号：US18608943

申请日：2024-03-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peipei Chen ,  Limei Zhang ,  Jiao Liu

IPC: H01M4/505 ,  H01M4/02 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M4/505 ,  H01M4/366 ,  H01M4/5825 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/0028

Abstract: Provided are a secondary battery, a battery module, a battery pack, and an electric device. The secondary battery includes: a positive electrode sheet and a non-aqueous electrolyte, where the positive electrode sheet includes a cathode active material with a core-shell structure, and the cathode active material includes a core and a shell covering the core; the core has a chemical formula of Li1+xMn1-yAyP1-zRzO4; where the first coating layer includes a crystalline pyrophosphate LiaMP2O7 and/or a crystalline pyrophosphate Mb(P2O7)c, the second coating layer includes a crystalline phosphate XPO4, and the third coating layer is carbon; and the non-aqueous electrolyte includes a first lithium salt and a first additive, where the first lithium salt includes one or more selected from the group consisting of LiN(CmF2m+1SO2)(CnF2n+1SO2) and Li(FSO2)2N, where m and n each are a positive integer.

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：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.

公开(公告)号：US12100810B2

公开(公告)日：2024-09-24

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.