公开(公告)号：US20240014434A1

公开(公告)日：2024-01-11

申请号：US18372230

申请日：2023-09-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Suogang GUO ,  Chenghua FU ,  Yonghuang YE ,  Chenchen ZHANG

IPC: H01M10/04 ,  H01M50/46 ,  H01M10/0587

CPC classification number: H01M10/0431 ,  H01M50/46 ,  H01M10/0587

Abstract: The present application discloses an electrode assembly and a related battery cell, battery, apparatus and manufacturing method therefor. The electrode assembly may include: a first electrode sheet and a second electrode sheet having opposite polarities; and a separator configured to separate the first electrode sheet and the second electrode sheet, the separator including at least two layers, where the first electrode sheet, the second electrode sheet and the separator may be wound to form the electrode assembly.

公开(公告)号：US20230402580A1

公开(公告)日：2023-12-14

申请号：US18449555

申请日：2023-08-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chenhui LIN ,  Jianfu HE ,  Qian LIU ,  Yonghuang YE ,  Haizu JIN

IPC: H01M4/13 ,  H01M10/0587 ,  H01M10/0525

CPC classification number: H01M4/13 ,  H01M10/0587 ,  H01M10/0525 ,  H01M2220/20

Abstract: An electrode assembly includes a current collector. The current collector includes a first coating region and a second coating region. The first coating region is coated with an active substance material and the second coating region is coated with a lithiation material. In an extension direction of the current collector, a gap is disposed between the first coating region and the second coating region.

公开(公告)号：US20230378546A1

公开(公告)日：2023-11-23

申请号：US18366342

申请日：2023-08-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Qian LIU ,  Jianfu HE ,  Fajun HUANG ,  Chenhui LIN

IPC: H01M10/0585 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/583

CPC classification number: H01M10/0585 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/625 ,  H01M4/623 ,  H01M4/583 ,  H01M2004/028

Abstract: A secondary battery includes a positive electrode plate. that includes a positive current collector, a first positive active material layer distributed on one side of the positive current collector, and a second positive active material layer distributed on an other side of the positive current collector and a negative electrode plate that includes a negative current collector, a first negative active material layer distributed on one side of the negative current collector and opposite to the second positive active material layer, and a second negative active material layer distributed on an other side of the negative current collector. A resistance of the first positive active material layer is R1, a resistance of the second positive active material layer is R2, a resistance of the first negative active material layer is R3, a resistance of the second negative active material layer is R4.

公开(公告)号：US20230231249A1

公开(公告)日：2023-07-20

申请号：US17970603

申请日：2022-10-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Quanguo LI ,  Yonghuang YE ,  Qian LIU ,  Haizu JIN ,  Wei LI

IPC: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04

CPC classification number: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0404 ,  H01M2004/027

Abstract: The present application discloses a battery module, a battery pack, an apparatus, and a method and device for manufacturing a battery module. The battery module includes n first-type battery cells and m second-type battery cells, n≥1, m≥1, and the n first-type battery cells and them second-type battery cells are arranged and satisfy: VED1>VED2, ΔF1>ΔF2, and (ΔF1×n+ΔF2×m)/(n+m)≤0.8×ΔF1, where VED1, VED2, ΔF1 and ΔF2 are respectively defined in the description.

公开(公告)号：US20230086688A1

公开(公告)日：2023-03-23

申请号：US17818407

申请日：2022-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Qian LIU ,  Yonghuang YE ,  Fajun HUANG ,  Haizu JIN

IPC: H01M50/209 ,  H01M50/267

Abstract: The present application provides a battery pack and a power consuming device powered by the battery pack. The battery pack includes a battery pack cavity and a plurality of battery cells received in the battery pack cavity. An interior space of the battery pack cavity can be divided into a first region with a temperature change rate of K1 and a second region with a temperature change rate of K2, where 0.066≤K1≤0.131 and 0.034≤K2≤0.066, K1 and K2 being expressed in ° C./min. The plurality of battery cells include at least one first battery cell arranged in the first region, and at least one second battery cell arranged in the second region. The battery pack of the present application can reduce or avoid the cask effect at low temperature and improve the energy retention rate at low temperature.

公开(公告)号：US20220416330A1

公开(公告)日：2022-12-29

申请号：US17892621

申请日：2022-08-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Chengdu LIANG ,  Haizu JIN ,  Qian LIU ,  Xiaofu Xu

IPC: H01M16/00 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M50/209 ,  H01M50/489

Abstract: The application relates to a battery module, a manufacturing method and a manufacturing device thereof, a battery pack and a power consumption apparatus. The battery module includes a first-type battery cell and a second-type battery cell having different chemical systems and being electrically connected at least in series, where under the conditions of 25° C. and 100% state of charge (SOC), specific power density P2 of the second-type battery cell is higher than specific power density P1 of the first-type battery cell. Satisfying: 0.04≤(r1/m)/(r2/n)≤14, where, r1 and r2 are resistances per unit area of a positive electrode plate of the first-type battery cell and a positive electrode plate of the second-type battery cell respectively, and m and n are numbers of laminations of the positive electrode plate of the first-type battery cell and the positive electrode plate of the second-type battery cell.

公开(公告)号：US20220123375A1

公开(公告)日：2022-04-21

申请号：US17563080

申请日：2021-12-28

Applicant: Contemporary Amperex Technology CO., Limited

Inventor： Chengdu LIANG ,  Qian LIU ,  Quanguo LI ,  Yonghuang YE ,  Wei LI

IPC: H01M10/42 ,  H01M50/258 ,  H01M50/509 ,  H01M10/625

Abstract: The present application provides a battery module, an apparatus, a battery pack, and a method and device for manufacturing the battery module. The battery module includes: a first-type battery cell and a second-type battery cell, which are connected in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical system, and the volume energy density of the first-type battery cell is less than the volume energy density of the second-type battery cell; and the capacity Cap1 of the first-type battery cell is greater than the capacity Cap2 of the second-type battery cell. While ensuring the safety performance of the battery module, the service life and the energy throughput of the battery module are effectively improved.

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：US20240379988A1

公开(公告)日：2024-11-14

申请号：US18782953

申请日：2024-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Suogang GUO ,  Yonghuang YE ,  Guozhong YANG ,  Chenghua FU ,  Chenchen ZHANG

IPC: H01M10/04

Abstract: This application relates to a winding device and a winding method, and pertains to the field of battery manufacturing technology. This application proposes a winding device including: a winding component; and a drawing mechanism, where the drawing mechanism is configured to draw a protruding section of a separator after the separator is led out of the winding component, so that length of the protruding section reaches a preset value. The winding component is configured to start winding after the length of the protruding section reaches the preset value, to form an electrode assembly. This application further proposes a winding method for forming an electrode assembly through winding. The winding device and the winding method are used for forming an electrode assembly with high safety performance through winding, so as to implement industrial production of the electrode assembly and improve manufacturing efficiency of the electrode assembly.

公开(公告)号：US20240372076A1

公开(公告)日：2024-11-07

申请号：US18776053

申请日：2024-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu XU ,  Yao JIANG ,  Qian LIU ,  Yonghuang YE

IPC: H01M4/36 ,  C01B25/45 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M4/58

Abstract: This application provides a mixed positive electrode active material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a first positive electrode active material and a second positive electrode active material, where the first positive electrode active material includes a compound LiNibCodMneMfO2, and the second positive electrode active material includes a compound LiaAxMn1-yByP1-zC2O4-nDn. In this application, with the first positive electrode active material and the second positive electrode active material mixed, the cycling capacity retention rate of the secondary battery is improved, the cycle life of the secondary battery is extended, and the safety of the secondary battery is improved.