公开(公告)号：US20240105939A1

公开(公告)日：2024-03-28

申请号：US18338690

申请日：2023-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Baozhen WU ,  Kai WU

IPC: H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/5825 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: A positive electrode plate includes a first active material and a second active material. The first active material is selected from a lithium iron phosphate-based material represented by a formula LiFe1-xMnxPO4, where x is between 0-0.8. The second active material includes one or more of lithium nickelate, lithium manganate, lithium cobaltate, lithium nickel cobalt manganate, lithium nickel cobalt aluminate, a lithium-rich manganese base, and lithium vanadium phosphate. An amount of the second active material used accounts for, by mass, 10-70%, on the basis of a total mass of the first active material and the second active material.

公开(公告)号：US20240322139A1

公开(公告)日：2024-09-26

申请号：US18679475

申请日：2024-05-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Yiyang WU ,  Wenlong BAI ,  Baozhen WU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/587 ,  H01M4/62 ,  H01M10/42

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/587 ,  H01M4/628 ,  H01M10/4235 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

Abstract: The present application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The negative electrode plate includes a negative electrode current collector and a first negative electrode film, a second negative electrode film, and a functional coating sequentially disposed on at least one surface of the negative electrode current collector, wherein the functional coating layer comprises a ferroelectric material; the second negative electrode film comprises a second negative electrode active material, and the second negative electrode active material comprises hard carbon; the first negative electrode film comprises a first negative electrode active material, and the first negative electrode active material comprises graphite. The negative electrode plate provided by the present application can enable the secondary battery to have high charging rate and long cycle life on the premise of high energy density.

公开(公告)号：US20240413495A1

公开(公告)日：2024-12-12

申请号：US18807273

申请日：2024-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Kai WU

IPC: H01M50/538 ,  H01M10/0587 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/249

Abstract: A battery cell includes a shell and two electrode assemblies located in the shell. Each electrode assembly includes a main body portion and a first tab and a second tab extending from the main body portion and having opposite polarities. The battery cell includes a first side and a second side oppositely arranged in a height direction of the battery cell. The main body portion of the first electrode assembly has the first tab and the second tab extending from the first side and the first tab extending from the second side. The main body portion of the second electrode assembly has the second tab extending from the first side and the first tab extending from the second side. The two second tabs located on the first side are electrically connected to each other, and the two first tabs located on the second side are electrically connected to each other.

公开(公告)号：US20230231134A1

公开(公告)日：2023-07-20

申请号：US18176265

申请日：2023-02-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Yiyang WU ,  Yuwen WANG ,  Chan LIAO ,  Baozhen WU

IPC: H01M4/587 ,  H01M4/38 ,  H01M4/133

CPC classification number: H01M4/587 ,  H01M4/386 ,  H01M4/133 ,  H01M2004/027

Abstract: A secondary battery includes a negative electrode plate including a negative electrode current collector, a first negative electrode material layer including a first negative electrode active material, and a second negative electrode material layer including a second negative electrode active material. The first negative electrode material layer is located between the negative electrode current collector and the second negative electrode material layer. The first negative electrode active material includes a first artificial graphite and a second artificial graphite. The first artificial graphite includes secondary particles. An amorphous carbon coating layer is provided on a surface of the first artificial graphite. The second artificial graphite includes primary particles. No amorphous carbon coating layer is provided on a surface of the second artificial graphite.

公开(公告)号：US20240154260A1

公开(公告)日：2024-05-09

申请号：US18411765

申请日：2024-01-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Yuwen WANG

IPC: H01M50/531 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/112 ,  H01M50/148 ,  H01M50/55

CPC classification number: H01M50/531 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/112 ,  H01M50/148 ,  H01M50/55 ,  H01M2220/20

Abstract: A cell includes a housing having an opening orientated towards a first direction, an end cover assembly configured to cover the opening and including an end cover body and two kinds of electrode terminals having opposite polarities, and at least two electrode assembly groups arranged in parallel in the housing in a second direction perpendicular to the first direction. Each electrode assembly group includes at least one electrode assembly each including a main part and two kinds of battery tabs having opposite polarities and led out from the main part. Two adjacent battery tabs in every two adjacent electrode assembly groups have a same polarity and are connected in common to an electrode terminal having the same polarity. Two battery tabs away from each other in every two adjacent electrode assembly groups have a same polarity and are connected to an electrode terminal having the same polarity.

公开(公告)号：US20230402708A1

公开(公告)日：2023-12-14

申请号：US18447429

申请日：2023-08-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Wanqiu MENG ,  Baozhen WU ,  Yiyang WU ,  Yuwen WANG ,  Chan LIAO ,  Yonghuang YE

IPC: H01M50/30 ,  H01M10/04 ,  H01M50/609

CPC classification number: H01M50/394 ,  H01M10/049 ,  H01M50/609 ,  H01M10/0404

Abstract: A battery cell, a battery, an electric apparatus, and a manufacturing method and manufacturing device of battery cell are described. The battery cell includes: an electrode assembly; a casing having an accommodating cavity for accommodating the electrode assembly; an exhaust mechanism provided on the casing, the exhaust mechanism including a connecting component and a breathable component, and the breathable component is configured to discharge gas to outside of the casing when gas pressure inside the casing reaches a threshold; and an electrolyte, filled in the casing; where gas permeability A of the breathable component, conductivity S of the electrolyte, and gas containment space V satisfy 20 mm2*ms/cm*ml

公开(公告)号：US20240347691A1

公开(公告)日：2024-10-17

申请号：US18752840

申请日：2024-06-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Yiyang WU ,  Wenlong BAI ,  Baozhen WU

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/36 ,  H01M4/587 ,  H01M50/429 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489

CPC classification number: H01M4/133 ,  H01M4/366 ,  H01M4/587 ,  H01M50/429 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

Abstract: An electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator located between the negative electrode plate and the positive electrode plate, where the negative electrode plate includes a negative electrode current collector, and a first negative electrode film layer and a second negative electrode film layer disposed on at least one surface of the negative electrode current collector; the first negative electrode film layer is located between the negative electrode current collector and the second negative electrode film layer and includes a first negative electrode active material, the first negative electrode active material includes graphite, the second negative electrode film layer includes a second negative electrode active material, and the second negative electrode active material includes hard carbon; and the separator includes a base film and a functional coating located at least on a side, against the negative electrode plate, of the base film.