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：US11522214B2

公开(公告)日：2022-12-06

申请号：US17320258

申请日：2021-05-14

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Cuiping Zhang ,  Changlong Han ,  Ming Zhang ,  Peipei Chen ,  Hailin Zou

IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/0568 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/131 ,  H01M4/02

Abstract: This application relates to lithium-ion batteries and related battery modules, battery packs and devices. Specifically, the lithium-ion battery includes a positive electrode plate, a negative electrode plate, an electrolyte, and a separator, wherein the positive electrode plate includes aluminum foil as a positive electrode current collector, and a content of element copper atom as an impurity per unit area of the aluminum foil is from 0.009 g/m2 to 0.021 g/m2, and the electrolyte contains first lithium salt and additive A, and the first lithium salt is a fluorine-containing sulfonimide lithium salt, and relative to total molar amount of lithium salt in the electrolyte, the fluorine-containing sulfonimide lithium salt has a molar amount of 30 mol % or higher; and the additive A is at least one of a phosphate compound containing an unsaturated bond, a cyclic compound containing a —SO2— bond and a silicon-oxygen compound containing an unsaturated bond.

公开(公告)号：US11196086B2

公开(公告)日：2021-12-07

申请号：US17131803

申请日：2020-12-23

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Cuiping Zhang ,  Ming Zhang ,  Peipei Chen ,  Hailin Zou ,  Liye Li

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  C07C311/48 ,  C07D327/00 ,  H01M4/02

Abstract: The present application relates to a lithium ion 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 electrolytic solution, the positive electrode plate including a positive electrode current collector and a positive electrode active material layer provided on at least one side of the positive electrode current collector, and the electrolytic solution including an organic solvent, a lithium salt and an additive, wherein the lithium salt comprises a primary lithium salt, the primary lithium salt is a first compound in an amount of 30% or more relative to the total molar amount of the lithium salt, and the first compound has a structure represented by the following formula I, and wherein the additive comprises a second compound represented by the following formula II.

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：US20230091618A1

公开(公告)日：2023-03-23

申请号：US17930420

申请日：2022-09-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Peipei Chen ,  Chang Peng ,  Hailin Zou

IPC: H01M10/0567 ,  H01M50/534 ,  H01M10/0568 ,  H01M10/0525

Abstract: The present disclosure provides a fast charge long lifetime secondary battery, a battery module, a battery pack, and a power consumption device. Particularly, the present disclosure provides a secondary battery, comprising an electrode assembly and an electrolytic solution, the electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator, the positive electrode plate comprises a positive electrode tab, and the negative electrode plate comprises a negative electrode tab, wherein the positive electrode tab has the following temperature rise coefficient: α = C 1 ⁢ 0 ⁢ S ⁢ 1 where S1 is a total cross-sectional area of the positive electrode tab, in unit of mm2; C is capacity of the electrode assembly, in unit of A·h; the electrolytic solution contains a heat stable salt and an additive that inhibits decomposition of the lithium salt.

公开(公告)号：US20220407115A1

公开(公告)日：2022-12-22

申请号：US17820944

申请日：2022-08-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

Abstract: A lithium-ion secondary battery is provided, where an electrolyte solution of the lithium-ion secondary battery comprises a highly heat-stable salt (My+)x/yR1(SO2N−)xSO2R2, where the My+ is a metal ion, R1 and R2 are each independently a fluorine atom, an alkyl with 1-20 carbon atoms, a fluoroalkyl with 1-20 carbon atoms, or a fluoroalkoxy with 1-20 carton atoms, x is 1, 2, or 3, and y is 1, 2, or 3. A mass percent of the salt in the electrolyte solution is set as k2%; a temperature rise coefficient k1 of the positive electrode sheet satisfies 2.5≤k1≤32, where k1=Cw/Mc, Cw is a positive electrode material load per unit area (mg/cm2) on the surface of any side of the positive electrode current collector on which a positive electrode material layer is loaded, and Mc is a carbon content (%) of the positive electrode material layer; and the lithium-ion secondary battery satisfies 0.34≤k2/k1≤8.

公开(公告)号：US11909000B2

公开(公告)日：2024-02-20

申请号：US17820944

申请日：2022-08-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang Peng ,  Peipei Chen ,  Hailin Zou ,  Chengdu Liang

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/02

CPC classification number: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0025

Abstract: A lithium-ion secondary battery is provided, where an electrolyte solution of the lithium-ion secondary battery comprises a highly heat-stable salt (My+)x/yR1(SO2N−)xSO2R2, where the My+ is a metal ion, R1 and R2 are each independently a fluorine atom, an alkyl with 1-20 carbon atoms, a fluoroalkyl with 1-20 carbon atoms, or a fluoroalkoxy with 1-20 carton atoms, x is 1, 2, or 3, and y is 1, 2, or 3. A mass percent of the salt in the electrolyte solution is set as k2%; a temperature rise coefficient k1 of the positive electrode sheet satisfies 2.5≤k1≤32, where k1=Cw/Mc, Cw is a positive electrode material load per unit area (mg/cm2) on the surface of any side of the positive electrode current collector on which a positive electrode material layer is loaded, and Mc is a carbon content (%) of the positive electrode material layer; and the lithium-ion secondary battery satisfies 0.34≤k2/k1≤8.

公开(公告)号：US11888116B2

公开(公告)日：2024-01-30

申请号：US17930420

申请日：2022-09-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Peipei Chen ,  Chang Peng ,  Hailin Zou

IPC: H01M10/0525 ,  H01M10/0567 ,  H01M50/534 ,  H01M10/0568

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M50/534 ,  H01M2220/20

Abstract: The present disclosure provides a fast charge long lifetime secondary battery, a battery module, a battery pack, and a power consumption device. In some embodiments, a secondary battery, comprising an electrode assembly and an electrolytic solution, the electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator, the positive electrode plate comprises a positive electrode tab, and the negative electrode plate comprises a negative electrode tab are provided. In those embodiments, the positive electrode tab has the following temperature rise coefficient:




α
=

C

1
⁢
0
⁢


S
⁢
1








where S1 is a total cross-sectional area of the positive electrode tab, in unit of mm2; C is capacity of the electrode assembly, in unit of A·h; the electrolytic solution contains a heat stable salt and an additive that inhibits decomposition of the lithium salt.