公开(公告)号：US20230017049A1

公开(公告)日：2023-01-19

申请号：US17940913

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Jianrui YANG ,  Cong CHENG ,  Yuanyuan LAN ,  Na LIU ,  Haizu JIN

IPC: H01M50/446 ,  H01M50/449 ,  H01M10/0525 ,  H01M50/417 ,  H01M50/489 ,  H01M50/403

Abstract: The present application relates to a separator, comprising a substrate and a coating formed on at least one surface of the substrate; wherein the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles both embedded in the inorganic particles and forming protrusions on the surface of the coating, the first organic particles have a number-average particle size of ≥8 μm; the second organic particles have a number-average particle size of ≥2 μm, and at least part of the second organic particles comprise a core structure and a shell structure. The present application also relates to a secondary battery comprising the separator, a device comprising the secondary battery and a method for preparing the separator.

公开(公告)号：US20220384916A1

公开(公告)日：2022-12-01

申请号：US17564598

申请日：2021-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Yulian ZHENG ,  Xinxiang CHEN ,  Liangfan XU ,  Peng WANG ,  Haizu JIN

IPC: H01M50/536 ,  H01M50/147

Abstract: The embodiments of this application provide a battery cell, a battery, an electrical device, and a battery cell manufacturing method and device, which pertains to the technical field of batteries. The battery cell includes an electrode assembly, a housing, an end cover assembly, and a support piece. The electrode assembly includes a main body and tabs. The housing has an opening and is used to accommodate the electrode assembly. The end cover assembly is used to cover the opening. The support piece is located between the main body and the end cover assembly, the tabs are bent around the support piece, and the support piece is configured to prevent the main body from moving along a direction facing the end cover assembly.

公开(公告)号：US20220352599A1

公开(公告)日：2022-11-03

申请号：US17864297

申请日：2022-07-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuanyuan LAN ,  Cong CHENG ,  Jianrui YANG ,  Haiyi HONG ,  Na LIU ,  Haizu JIN

IPC: H01M50/446 ,  H01M50/403

Abstract: This application relates to a separator, including: a substrate; and a coating layer provided on at least one surface of the substrate; where the coating layer includes inorganic particles and organic particles, the organic particles include first organic particles, the first organic particles are embedded into the inorganic particles and form bulges on a surface of the coating layer, and a number-based median particle size of the first organic particles is ≥12 μm. This application further relates to a method for preparing the separator, a secondary battery containing the separator, a battery module including the secondary battery, a battery pack, and an apparatus.

公开(公告)号：US20220077521A1

公开(公告)日：2022-03-10

申请号：US17418762

申请日：2019-03-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Kaijie YOU ,  Yuepan HOU ,  Fei HU ,  Peng WANG ,  Zhenhua LI

IPC: H01M10/6554 ,  H01M10/613 ,  H01M10/04 ,  H01M50/289 ,  H01M10/653 ,  H01M50/209

Abstract: The present disclosure provides a battery pack, including: a battery box (1), a plurality of battery modules (2), a cooling plate (3), and a buffering member (4). Each battery module (2) includes a plurality of battery cells (21) and a plurality of busbars (22). Each battery cell (21) includes an electrode assembly (211) and a battery housing (212). The battery cells (21) are laid flat. When the electrode assembly (211) is of a wound structure and is flat, and outer surfaces of the electrode assembly (211) include two flat surfaces (2110). The two flat surfaces (2110) are opposite to each other in a vertical direction. Alternatively, when the electrode assembly (211) is of a laminated structure, a first electrode plate (2111), a separator (2113), and a second electrode plate (2112) are stacked in a vertical direction. Therefore, the electrode assembly (211) of the battery cells (21) applies a greatest expansion force in the vertical direction during charge and discharge. The cooling plate (3) is disposed at a side of the battery module (2) in the vertical direction, and the buffering member (4) is disposed between the cooling plate (3) and the battery box (1). Therefore, the greatest expansion force applied by the battery cells (21) on the buffering member (4) enables the buffering member (4) to fit closely with both the cooling plate (3) and the battery box (1) concurrently, thereby increasing a heat dissipation area to improve heat dissipation effects of the cooling plate (3).

公开(公告)号：US20210135238A1

公开(公告)日：2021-05-06

申请号：US17057968

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Zhenhua LI ,  Xing LI

IPC: H01M4/66 ,  H01M4/62 ,  H01M4/13 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/24 ,  H01G11/68 ,  H01G11/70

Abstract: This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive electrode active material layer and a safety coating disposed between the current collector and the positive electrode active material layer; wherein the safety coating includes a polymer matrix, a conductive material and an inorganic filler; and wherein the polymer matrix is fluorinated polyolefin and/or chlorinated polyolefin having a crosslinked structure. When the electrochemical device (such as a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, the positive electrode plate can quickly disconnect the circuit, thereby improving the high temperature safety of the electrochemical device.

公开(公告)号：US20210119297A1

公开(公告)日：2021-04-22

申请号：US17135918

申请日：2020-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Zhenhua LI ,  Haizu JIN ,  Ning CHEN ,  Fei HU ,  Yuanbao CHEN ,  Rui YANG

IPC: H01M50/271 ,  H01M50/296 ,  H01M50/593 ,  H01M50/204 ,  H01M50/249 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/342 ,  B60L50/64

Abstract: Disclosed are a secondary battery, a battery module and an electric vehicle. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The housing has an accommodating chamber, the accommodating chamber having an opening, and the electrode assembly being accommodated in the accommodating chamber. The electrode assembly includes a plurality of electrode units, the plurality of electrode units being stacked in an axial direction of the accommodating chamber. The top cover assembly includes a top cover plate, a first electrode terminal and a second electrode terminal, the top cover plate being connected to the housing and located on a side of the electrode assembly in the axial direction, and the first electrode terminal and the second electrode terminal both protruding from the top cover plate and being electrically connected to the electrode assembly.

公开(公告)号：US20210050583A1

公开(公告)日：2021-02-18

申请号：US17043711

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xing LI ,  Zhenhua LI ,  Haizu JIN

IPC: H01M2/34 ,  H01M4/66 ,  H01M4/62

Abstract: This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a safety coating, a difficultly soluble layer and a positive active material layer, wherein the safety coating, the difficultly soluble layer and the positive active material layer are successively disposed on the current collector; wherein the safety coating includes a polymer matrix, a conductive material and an inorganic filler; wherein the difficultly soluble layer includes a binder and a conductive agent, and wherein the binder of the difficultly soluble layer has a solubility in an oil solvent smaller than the solubility of the polymer matrix of the safety coating in such oil solvent.

公开(公告)号：US20190109314A1

公开(公告)日：2019-04-11

申请号：US16212446

申请日：2018-12-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu JIN ,  Hu XU

IPC: H01M2/26 ,  H01M10/0587

CPC classification number: H01M2/263 ,  H01M2/26 ,  H01M4/70 ,  H01M10/0587

Abstract: The present disclosure discloses a cell and a battery using the same. The cell comprises a positive electrode plate and a negative electrode plate which each are provided with an uncoated current collector, the uncoated current collector of the positive electrode plate and the uncoated current collector of the negative electrode plate each are respectively welded with an electrical conductive piece used to connect with an external circuit. The uncoated current collector of the positive electrode plate is punched to form an electrolyte transmission channel and/or the uncoated current collector of the negative electrode plate is punched to form an electrolyte transmission channel; a punching manner of the electrolyte transmission channel comprises following one manner or two manners: one manner is that an edge region of the uncoated current collector which is not aligned with the electrical conductive piece is punched to form an semi-closed channel, the other manner is that the uncoated current collector is punched to form a hole-like all-closed channel. In comparison with the technology in background, by that the uncoated current collector is punched to form the electrolyte transmission channel, electrolyte infiltration speed is improved, at the same time the rate performance and the cycle performance of the battery are promoted.

公开(公告)号：US20180198123A1

公开(公告)日：2018-07-12

申请号：US15686067

申请日：2017-08-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yunjian MA ,  Wei LI ,  Haizu JIN ,  Yikuang JIN

IPC: H01M4/583 ,  H01M10/0525 ,  H01M4/04

CPC classification number: H01M4/583 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/362 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present application relates to a negative electrode material for a secondary battery. The negative electrode material includes an expanded graphite and an organic phase change material intercalated into the expanded graphite. The present application further relates to a method for preparing the negative electrode material and a secondary battery using the negative electrode material. Since the organic phase change material is intercalated into the expanded graphite, when an internal temperature of the secondary battery increases, the organic phase change material absorbs heat by phase change, which can improve the heat storage and energy storage capacity and the safety performance of the secondary battery. In addition, since the organic phase change material has certain viscosity and flexibility, the adhesion performance of the negative electrode material on the current collector can also be improved.

公开(公告)号：US20240372187A1

公开(公告)日：2024-11-07

申请号：US18773695

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Shaojun NIU ,  Haizu JIN ,  Jipeng GUO ,  Yikuang JIN

IPC: H01M50/184 ,  H01M50/169

Abstract: A battery cell, a battery and an electric device are provided. The battery cell includes a casing, which is provided with an opening; an electrode assembly, which is accommodated inside the casing; and a cover body, which closes the opening and forms a sealing structure with the casing. One of the casing and the cover body is provided with a first flange portion; the first flange portion is connected to the other one of the casing and the cover body by means of a connection portion; the connection portion includes a first region and a second region; and the strength of the second region is lower than the strength of the first region.