公开(公告)号：US20240363960A1

公开(公告)日：2024-10-31

申请号：US18764403

申请日：2024-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Pengcheng Yao ,  Mingguang Gu ,  Yao Li ,  Bingfeng Li ,  Zequan Lu

IPC: H01M50/342 ,  H01M10/04 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6554

CPC classification number: H01M50/3425 ,  H01M10/04 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6554 ,  H01M2200/10 ,  H01M2200/20

Abstract: Some embodiments of this application provide a battery, an electrical device, and a method and equipment for manufacturing a battery. The battery includes: a battery cell, including a pressure relief mechanism disposed on a first wall of the battery cell and configured to be actuated to relieve an internal pressure when the internal pressure or an internal temperature of the battery cell reaches a threshold; an attachment component, where a first surface of the attachment component is attached to the first wall, a first through-hole located corresponding to the pressure relief mechanism is created in the attachment component; and an insulation component, where at least a part of the insulation component abuts and covers an inner wall of the first through-hole to dielectrically protect the inner wall of the first through-hole.

公开(公告)号：US20240363918A1

公开(公告)日：2024-10-31

申请号：US18765330

申请日：2024-07-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang Li ,  Yuanmiao Zhao ,  Yu Yan ,  Zhimin Dan ,  Xiaojian Huang ,  Xinwei Chen

IPC: H01M10/637 ,  B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02J7/00 ,  H02P27/08 ,  H02P29/60

CPC classification number: H01M10/637 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02J7/0063 ,  H02P27/08 ,  H02P29/60 ,  B60L58/27 ,  H01M2220/20

Abstract: Disclosed is a control method of a heating system for a battery. The control method includes: alternately controlling a switch module to be in a first switch state within a first duration and in a second switch state within a second duration; discharging to a power supply module by an energy storage module through a first loop within the first half time T of the first duration, and charging the energy storage module by the power supply module through the first loop within the second half time T of the first duration; and discharging to the power supply module by the energy storage module through a second loop within the first half time T of the second duration, and charging the energy storage module by the power supply module through the second loop within the second half time T of the second duration.

公开(公告)号：US20240363829A1

公开(公告)日：2024-10-31

申请号：US18764795

申请日：2024-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Linzhen YU ,  Lei LU ,  Zheng WANG ,  Shisong LI ,  Shengwu ZHANG ,  Yalong QING

IPC: H01M4/04

CPC classification number: H01M4/0435

Abstract: A pole piece manufacturing device is described. The pole piece manufacturing device includes a membrane forming mechanism, a composite mechanism, a detection mechanism and an adjustment mechanism. The membrane forming mechanism is configured to form an active substance into a membrane. The composite mechanism is configured to composite the membrane and a substrate into a pole piece. The detection mechanism is is configured to detect a thickness or a weight per unit area of the membrane. The adjustment mechanism is configured to adjust the membrane forming mechanism according to detection results of the detection mechanism, so as to control the thickness or the weight per unit area of the membrane within a preset range. The membrane is detected by providing the detection mechanism. When the membrane does not meet the design requirements, the membrane forming mechanism is adjusted timely through the adjustment mechanism to make it meet the design requirements.

公开(公告)号：US20240361396A1

公开(公告)日：2024-10-31

申请号：US18764949

申请日：2024-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ming NI ,  Haili LI ,  Mingwei YAN

IPC: G01R31/389 ,  G01R31/374 ,  G01R31/3842 ,  H02J7/00

CPC classification number: G01R31/389 ,  G01R31/374 ,  G01R31/3842 ,  H02J7/0047

Abstract: Provided are a direct current resistance (DCR) detection method for batteries, a system, a device, and a storage medium. Multiple discharging current pulses are applied during the constant current charging process of a battery to form a negative pulse charging mode. The discharging current can be added during the charging process to quickly remove the polarization effect of a battery cell generated during the charging process, thereby improving the charging acceptance capacity of the battery cell, shortening the charging time and increasing the charging efficiency. At the same time, a first battery voltage is obtained during the discharging current pulse time period, and a second battery voltage is obtained during the constant current charging time period after the discharging current pulse, thereby obtaining a DCR value of the battery during actual charging and use. The DCR of the battery cell can be detected simultaneously in the negative pulse charging mode.

公开(公告)号：US20240360259A1

公开(公告)日：2024-10-31

申请号：US18765315

申请日：2024-07-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei Li ,  Haiyang Kang ,  Chengdong Sun ,  Yi Zheng ,  Shaohua Ai

IPC: C08F220/18 ,  C08K7/26 ,  C08K9/08 ,  H01M50/42 ,  H01M50/437 ,  H01M50/446 ,  H01M50/451

CPC classification number: C08F220/18 ,  C08K7/26 ,  C08K9/08 ,  H01M50/42 ,  H01M50/437 ,  H01M50/446 ,  H01M50/451 ,  C08K2201/005

Abstract: A binder composition includes a polymer and ceramic particles, the polymer including structural units derived from a first-type monomer, a second-type monomer, and a third-type monomer, and a molar ratio of the first-type monomer, second-type monomer, and third-type monomer being (50 to 58):(40 to 44):(2 to 6); where the first-type monomer is selected from one or more compounds of formula I, the second-type monomer is selected from one or more compounds of formula II, and the third-type monomer is selected from one or more compounds of formula III. The binder improves the porosity of the separator, increases the ionic conductivity, and reduces the internal resistance, thereby enhancing the cycling performance of the secondary battery.

公开(公告)号：US12132217B2

公开(公告)日：2024-10-29

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 ,  H01M4/02 ,  H01M4/525 ,  H01M4/58 ,  H01M4/583 ,  H01M10/04

CPC classification number: H01M50/204 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/583 ,  H01M10/0404 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

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：US20240356155A1

公开(公告)日：2024-10-24

申请号：US18592528

申请日：2024-03-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei Li ,  Meihuang Chen ,  Yi Zheng ,  Haiyang Kang ,  Runhao Lai ,  Chengdong Sun

IPC: H01M50/42 ,  H01M50/449

CPC classification number: H01M50/42 ,  H01M50/449

Abstract: The present application relates to the technical field of secondary batteries, and more particularly relates to a binder for secondary batteries, a separator, a secondary battery and an electrical apparatus. The binder for secondary batteries is in a ring shape, and includes an acrylate copolymer. The acrylate copolymer has good adhesion, and a contact point of the binder with the ring-shaped structure is a circle line of the ring-shaped binder. The ring-shaped binder has bonding points with larger areas than a spherical binder, such that good bonding performance can be achieved when the usage amount of the binder with the ring-shaped structure is reduced.

公开(公告)号：US20240356013A1

公开(公告)日：2024-10-24

申请号：US18760050

申请日：2024-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chen Zeng ,  Meng Kang ,  Baida Deng ,  Libing He

IPC: H01M4/36 ,  C01B32/21 ,  H01M4/02 ,  H01M4/48 ,  H01M4/587

CPC classification number: H01M4/366 ,  C01B32/21 ,  H01M4/48 ,  H01M4/587 ,  C01P2004/80 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/027

Abstract: Provided are a negative active material, a method for preparing same, a secondary battery containing same, and an electrical device. The negative active material includes a natural graphite substrate of a porous structure and a functional material distributed in pores of the natural graphite substrate, and the functional material includes amorphous carbon and a titanium-containing compound. The negative active material provided in this application exhibits excellent kinetic performance, and the secondary battery provided herein exhibits excellent fast-charging performance and cycle performance.

公开(公告)号：US12126054B2

公开(公告)日：2024-10-22

申请号：US18307338

申请日：2023-04-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yulian Zheng ,  Xiaoping Zhang ,  Peng Wang ,  Zhanyu Sun

IPC: H01M50/593 ,  H01M50/15 ,  H01M50/172 ,  H01M50/474 ,  H01M50/477 ,  H01M50/531 ,  H01M50/533 ,  H01M50/547 ,  H01M50/586

CPC classification number: H01M50/593 ,  H01M50/15 ,  H01M50/172 ,  H01M50/474 ,  H01M50/477 ,  H01M50/533 ,  H01M50/547 ,  H01M50/586 ,  H01M50/531

Abstract: The present disclosure relates to a battery cell to alleviate the problem of impurities falling into an electrode assembly. Wherein, the battery cell includes: an electrode assembly including a tab and a cell body, wherein the tab is connected to the cell body; a cover plate assembly including an electrode terminal and a cover plate, wherein the electrode terminal is disposed on the cover plate; a connecting sheet connected between the tab and the electrode terminal, the connecting sheet includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the tab, and the second connecting portion is connected to the electrode terminal; an insulating pallet disposed between the cell body and the connecting sheet; and an insulation member disposed between the insulating pallet and the second connecting portion.

公开(公告)号：US12123917B2

公开(公告)日：2024-10-22

申请号：US18058008

申请日：2022-11-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haijiang Wang ,  Shuting Sun ,  Xu Liang

IPC: G01R31/3842 ,  H02J7/00

CPC classification number: G01R31/3842 ,  H02J7/0047

Abstract: A method for determining a remaining charging time of a battery. The method includes obtaining a first charging current and a second charging current. The first charging current is a present charging current of the battery, and the second charging current is a charging current of the battery when the battery is fully charged. The method further includes determining an average charging current value based on the first charging current and the second charging current, and determining the remaining charging time based on the average charging current value.