公开(公告)号：US11973218B2

公开(公告)日：2024-04-30

申请号：US18487266

申请日：2023-10-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Baiqing Li ,  Jiang Liu ,  Yao Jiang ,  Xiaomei Liu

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028 ,  H01M2220/20

Abstract: A novel positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer with a single-layer structure or a multi-layer structure. When the positive electrode film layer is a single-layer structure, at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active material; and/or, when the positive electrode film layer is a multi-layer structure, at least one layer of at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active materials. The first positive electrode active material includes an inner core, a first cladding layer comprising crystalline pyrophosphates, a second cladding layer comprising crystalline phosphate, and a third cladding layer.

公开(公告)号：US11239501B2

公开(公告)日：2022-02-01

申请号：US16562114

申请日：2019-09-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Xiaomei Liu ,  Shipeng Li ,  Jiang Liu ,  Guobao Wang

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/136 ,  H01M4/58 ,  H01M4/587 ,  H01M10/42

Abstract: The present disclosure provides a lithium-ion battery comprising an electrode assembly, an electrolyte and a case. The electrolyte comprises a lithium salt and an organic solvent which comprises a cyclic ester, a mass of the cyclic ester is equal to or less than 10% of a total mass of the organic solvent. A negative electrode active material at least comprises a carbon-based negative electrode material which in the negative electrode film exists in a form of a pre-lithium-intercalation compound LiCx formed by lithiation with a lithium metal, 12≤x≤150; a capacity of the negative electrode active material per unit area/(a capacity of the positive electrode active material per unit area+a capacity of active lithium ions of the pre-lithium-intercalation compound LiCx which can be intercalated and deintercalated in the negative electrode film per unit area)≥1.10.

公开(公告)号：US20210305633A1

公开(公告)日：2021-09-30

申请号：US17345077

申请日：2021-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qing XIA ,  Jiang Liu ,  Guobao Wang ,  Xiaomei Liu ,  Yongshou Lin

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/62

Abstract: The present application discloses a wound electrode assembly, wherein the negative electrode plate thereof includes a negative electrode current collector and a negative active material layer which includes a negative active material disposed on two opposite surfaces of the negative electrode current collector; and the two negative active material layers respectively include active an material layer in an unpaired region and an active material layer in a paired region distributed successively in the length direction of the negative electrode plate, and two active material layers in the unpaired regions are arranged at both ends in the length direction of the negative electrode plate, and a first metallic lithium layer is disposed on the surface of one or both of the active material layers in the unpaired regions, so that to form a first lithium pre-intercalation compound in either or both of the active material layers in the unpaired regions.

公开(公告)号：US20200091519A1

公开(公告)日：2020-03-19

申请号：US16560729

申请日：2019-09-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Jiang Liu ,  Guobao Wang ,  Xiaomei Liu ,  Xianfeng Zheng

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/0525

Abstract: The present disclosure provides a lithium-rich negative electrode plate, an electrode assembly and a lithium-ion battery, the lithium-rich negative electrode plate comprises a negative electrode collector and a negative electrode film, the negative electrode film is provided on a surface of the negative electrode collector and comprises a negative electrode active material, the lithium-rich negative electrode plate further comprises a layer of lithium metal provided on a surface of the negative electrode film. The negative electrode film further comprises a cyclic ester which is capable of forming a film on the negative electrode plate, a dielectric constant of the cyclic ester is larger than or equal to 10, and a reduction potential of the cyclic ester relative to Li/Li+ is lower than or equal to 1.5V.

公开(公告)号：US11996545B2

公开(公告)日：2024-05-28

申请号：US17416026

申请日：2019-02-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Longfei Yang ,  Guobao Wang ,  Xiaomei Liu ,  Jiang Liu ,  Yongshou Lin ,  Fenggang Zhao

IPC: H01M4/134 ,  H01M4/02 ,  H01M4/133 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M4/134 ,  H01M4/133 ,  H01M4/366 ,  H01M4/382 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027 ,  H01M4/136 ,  H01M4/5825 ,  H01M2010/4292

Abstract: An electrode assembly and a lithium-ion battery are described. The electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer, the negative electrode plate further includes a lithium metal layer, the lithium metal layer is formed by a plurality of regular or irregular strip-shaped lithium-rich regions, and the plurality of lithium-rich regions present a discontinuous pattern of spaced distribution in a length direction of the negative electrode plate. The electrode assembly further satisfies that: negative electrode capacity per unit area/positive electrode capacity per unit area=1.2 to 2.1 and negative electrode capacity per unit area/(positive electrode capacity per unit area+capacity of the lithium metal layer on the surface of the negative electrode active substance layer per unit area× 80%)≥ 1.10.

公开(公告)号：US20230231401A1

公开(公告)日：2023-07-20

申请号：US18087707

申请日：2022-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Jiang Liu

IPC: H02J7/00 ,  B60L58/18 ,  B60L50/60 ,  H01M10/46

CPC classification number: H02J7/00711 ,  H02J7/007188 ,  B60L58/18 ,  B60L50/60 ,  H01M10/46 ,  H02J7/0013 ,  H02J7/0063 ,  B60L2240/12 ,  H01M2010/4271

Abstract: This application relates to the field of battery technologies and discloses a method and an apparatus for battery energy recovery, a battery management system, and a battery. The method includes: sending a charge/discharge instruction to a battery pack, so that the battery pack alternately outputs a charge signal and a discharge signal according to the charge signal when a vehicle is traveling; and performing battery energy recovery for the vehicle according to the charge signal. In the method and the apparatus for battery energy recovery, the battery management system, and the battery in this application, the charge signal and the discharge signal are alternately output so as to perform battery energy recovery under a condition corresponding to the charge instruction. In this way, endurance mileage of the vehicle is effectively increased and degradation speed of the battery is reduced.

公开(公告)号：US20240421402A1

公开(公告)日：2024-12-19

申请号：US18814208

申请日：2024-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qi CHENG ,  Hong Wang ,  Quankun Li ,  Jiang Liu ,  Daichun Tang

IPC: H01M50/244 ,  H01M50/105 ,  H01M50/242 ,  H01M50/249

Abstract: A battery, a power consumption apparatus, and a method for producing a battery are provided. The battery includes: a battery module including a first battery cell and a second battery cell that are disposed in a stacked manner along a first direction, where the first battery cell and the second battery cell are located at a first end of the battery module in a second direction, a first electrode output part of the first battery cell is connected to a second electrode output part of the second battery cell, the first direction is a thickness direction of the battery, and the second direction is a length direction of the battery; and a supporting member disposed in a first accommodating space enclosed by a first electrode output part and a second electrode output part, and configured to support the first electrode output part and the second electrode output part.

公开(公告)号：US11888154B2

公开(公告)日：2024-01-30

申请号：US18211591

申请日：2023-06-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Jiang Liu ,  Baiqing Li ,  Yao Jiang ,  Xiaomei Liu

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M4/525 ,  H01M4/583 ,  H01M4/02 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M4/5825 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/20

Abstract: A positive electrode sheet may comprise a positive electrode current collector and a positive electrode film layer having a single-layer structure or a multi-layer structure provided on at least one surface thereof; when the positive electrode film layer is of a single-layer structure, at least one positive electrode film layer may comprise both a first positive electrode active material and a second positive electrode active material; and/or, when the positive electrode film layer is of a multi-layer structure, at least one layer of the at least one positive electrode film layer may comprise both a first positive electrode active material and a second positive electrode active material; the first positive electrode active material may comprises an inner core containing Li1+xMn1-yAyP1-zRzO4, a first coating layer containing pyrophosphate MP2O7 and phosphate XPO4 and covering the inner core, and a second coating layer containing carbon element and covering the first coating layer.

公开(公告)号：US20220344718A1

公开(公告)日：2022-10-27

申请号：US17857426

申请日：2022-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu Jin ,  Xiaona Wang ,  Xiaomei Liu ,  Jiang Liu ,  Wenwei Chen

IPC: H01M10/0583

Abstract: The present application discloses an electrode assembly including: a first electrode sheet including an insulating substrate, an electricity-conducting layer arranged on a surface of the insulating substrate, and an active material layer coating on a surface of the electricity-conducting layer, in which the first electrode sheet is bent to form a multi-layer structure and includes a plurality of bending segments and a plurality of first layer-stacking segments arranged to be stacked, and each of the bending segments is configured to connect two adjacent first layer-stacking segments; a second electrode sheet, in which a polarity of the second electrode sheet is opposite to a polarity of the first electrode sheet, and the second electrode sheet includes a plurality of second layer-stacking segments, the plurality of second layer-stacking segments and the plurality of first layer-stacking segments are alternately arranged in a layer-stacking direction of the first layer-stacking segments.

公开(公告)号：US11482705B2

公开(公告)日：2022-10-25

申请号：US16560729

申请日：2019-09-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang Zhou ,  Jiang Liu ,  Guobao Wang ,  Xiaomei Liu ,  Xianfeng Zheng

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/02 ,  H01M4/1393 ,  H01G11/64 ,  H01M10/0567 ,  H01M4/04 ,  H01M4/583

Abstract: The present disclosure provides a lithium-rich negative electrode plate, an electrode assembly and a lithium-ion battery, the lithium-rich negative electrode plate comprises a negative electrode collector and a negative electrode film, the negative electrode film is provided on a surface of the negative electrode collector and comprises a negative electrode active material, the lithium-rich negative electrode plate further comprises a layer of lithium metal provided on a surface of the negative electrode film. The negative electrode film further comprises a cyclic ester which is capable of forming a film on the negative electrode plate, a dielectric constant of the cyclic ester is larger than or equal to 10, and a reduction potential of the cyclic ester relative to Li/Li+ is lower than or equal to 1.5V.