公开(公告)号：US20240234988A1

公开(公告)日：2024-07-11

申请号：US18429654

申请日：2024-02-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Li LU ,  Nan ZHANG ,  Jian ZHOU ,  Hong WANG ,  Jiang LIU

IPC: H01M50/593 ,  H01M50/169

CPC classification number: H01M50/593 ,  H01M50/169 ,  H01M2220/20

Abstract: A battery cell may comprise a housing, an electrode assembly, an end cover and an isolator. The housing may be provided with an opening at an end along a first direction. The housing may comprise a first side plate with a first plate body and a second plate body arranged along a second direction, the first plate body and the second plate body may be welded to form a welding part extending to the opening, and the second direction is perpendicular to the first direction. The electrode assembly may be accommodated in the housing. The end cover may be used for covering the opening. The isolator may be arranged between the first side plate and the electrode assembly, and attached to the first side plate and cover at least part of the welding part to isolate the electrode assembly from the welding part.

公开(公告)号：US20240088447A1

公开(公告)日：2024-03-14

申请号：US18515260

申请日：2023-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hong WANG ,  Jia LIN ,  Jiang LIN ,  Jiang LIU

IPC: H01M10/0585 ,  H01M4/139 ,  H01M50/54

CPC classification number: H01M10/0585 ,  H01M4/139 ,  H01M50/54 ,  H01M2004/021

Abstract: An electrode assembly may include positive and negative electrode sheets, the positive and negative electrode sheets including positive and negative electrode current collectors and positive and negative electrode active material layers. The negative electrode sheet may be continuously bent and include a plurality of laminated segments and a plurality of bent segments for connecting the laminated segments; a plurality of the positive electrode sheets may be alternately laminated with the plurality of laminated segments in a first direction. An outermost positive electrode sheet may be a unilateral electrode having the positive electrode active material layer coated on an inner side rather than outer side of the positive electrode current collector thereof. The bent segment may be connected to an end of the laminated segment in a second direction; and the unilateral electrode may not extend beyond the adjacent bent segment.

公开(公告)号：US20230064607A1

公开(公告)日：2023-03-02

申请号：US17858862

申请日：2022-07-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiong ZHENG ,  Xianxi PAN ,  Zhimin DAN ,  Hong WANG

IPC: H02P27/08 ,  H02M7/5395

Abstract: This application provides an electric motor control method and device, a system, and an electric vehicle. The method includes: obtaining an input power and an output power of an electric motor; calculating a loss power based on the input power and the output power; determining a target d-axis current of the electric motor, where the target d-axis current is calculated by a calculation module based on the loss power, the calculation module includes a tracking differentiator, and the calculation module operates in a controller; and determining a duty ratio based on the target d-axis current and a preset q-axis current, and inputting the duty ratio into an inverter so that the inverter drives, based on the duty ratio, the electric motor to operate.

公开(公告)号：US20240213542A1

公开(公告)日：2024-06-27

申请号：US18596058

申请日：2024-03-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Nan ZHANG ,  Hong WANG ,  Jiang LIU ,  Wenwei CHEN

IPC: H01M10/0583 ,  H01M50/533 ,  H01M50/536 ,  H01M50/588

CPC classification number: H01M10/0583 ,  H01M50/533 ,  H01M50/536 ,  H01M50/588 ,  H01M2220/20

Abstract: An electrode assembly includes a first electrode plate, and separators provided on two sides of the first electrode plate in a thickness direction of the first electrode plate and stacked with the first electrode plate. In an unfolded state of the electrode assembly, a separator has a first edge portion exceeding an end of the first electrode plate in a length direction of the separator, and a second edge portion exceeding an end of the first electrode plate in a height direction of the separator. In the thickness direction of the first electrode plate, the corresponding first edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a first hot-melted segment, and the corresponding second edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a second hot-melted segment.

公开(公告)号：US20230207945A1

公开(公告)日：2023-06-29

申请号：US17972418

申请日：2022-10-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu TANG ,  Hong WANG ,  Peng WANG ,  Jiang LIU ,  Junrong LI

IPC: H01M50/258 ,  H01M50/46 ,  H01M50/204 ,  H01M50/547 ,  H01M10/04

CPC classification number: H01M50/258 ,  H01M50/46 ,  H01M50/204 ,  H01M50/547 ,  H01M10/0431

Abstract: The present application provides a battery, a manufacturing method and apparatus thereof, and an electric device. The battery includes: a box; a battery unit provided in the box and including multiple battery cells stacked in a first direction, each including two first walls provided oppositely in the first direction and two second walls provided in a second direction orthogonal to the first direction, and an electrode terminal being provided on the second wall; and an end plate provided between a box inner wall of the box and the battery unit and including a first surface facing the box inner wall and a second surface facing the first wall, the first surface including a first region corresponding to a central region of the first wall and a second region corresponding to an edge region of the first wall, and a part of the second surface being a flat surface.

公开(公告)号：US20230035703A1

公开(公告)日：2023-02-02

申请号：US17897412

申请日：2022-08-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu TANG ,  Peng WANG ,  Hong WANG ,  Junrong LI ,  Yudong QIU

IPC: H01M50/284 ,  H01M50/543

Abstract: A battery includes a battery pair and an information collector configured to collect parameters of the battery. The battery pair includes two battery cells. A surface of each of the two battery cells is provided with a pole. The poles of the two battery cells abut against each other face to face to form a pole assembly structure. The pole assembly structure includes an insertion slot. The information collector includes a main board and a sampling piece electrically connected to the main board. One end of the sampling piece extends into the insertion slot and is electrically connected to the pole assembly structure.

公开(公告)号：US20220407118A1

公开(公告)日：2022-12-22

申请号：US17893503

申请日：2022-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hong WANG ,  Jiang LIU ,  Xiaomei LIU

IPC: H01M10/0583

Abstract: An electrode assembly includes first and second electrode plate having opposite polarities, and a separator separating the first and second electrode plates. The first electrode plate includes two first stack sections and a bend section connecting the first stack sections and including a guide portion configured to guide the bend section to bend during production. The second electrode plate includes a second stack section disposed between the first stack sections. The separator includes two separation sections each disposed between the second stack section and one first stack section. Thickness Da of each first stack section, thickness Dc of the second stack section, and thickness Ds of each separation section in a stacking direction of the first stack sections, and a dimension w of the guide portion in a bending direction of the bend section satisfy: Dc+2Ds≤w≤2×(Dc+2Ds+Da).

公开(公告)号：US20230207823A1

公开(公告)日：2023-06-29

申请号：US18079008

申请日：2022-12-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hong WANG ,  Bin YAO ,  Ying HUANG ,  Jiang LIU

IPC: H01M4/62 ,  H01M4/583

CPC classification number: H01M4/624 ,  H01M4/583 ,  H01M2004/027

Abstract: This application provides a secondary battery, including a negative electrode plate, where the negative electrode plate may include: a negative electrode current collector; a first negative electrode film layer disposed on at least one surface of the negative electrode current collector, where the first negative electrode film layer may include a first negative electrode active material and a first conductive polymer, a mass percentage of the first conductive polymer in the first negative electrode film layer is recorded as A, and A≤6%; and a second negative electrode film layer disposed on a surface of the first negative electrode film layer, where the second negative electrode film layer may include a second negative electrode active material and a second conductive polymer, and a mass percentage of the second conductive polymer in the second negative electrode film layer is recorded as B; where the negative electrode plate may satisfy A>B.