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：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：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.

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：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.