公开(公告)号：US20240347822A1

公开(公告)日：2024-10-17

申请号：US18750879

申请日：2024-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xianglong DU ,  Yikuang JIN ,  Hu XU ,  Shaojun NIU

IPC: H01M50/147 ,  H01M50/342 ,  H01M50/474

CPC classification number: H01M50/147 ,  H01M50/342 ,  H01M50/474 ,  H01M2200/10 ,  H01M2200/20

Abstract: An end cover assembly includes an end cover and a current collecting member, and the end cover is provided with a pressure relief structure. The current collecting member is located on one side of the end cover facing the interior of the battery cell and including a current collecting portion and an assembling portion. The assembling portion is located between the end cover and the current collecting portion and is configured to be connected to the end cover and the current collecting portion. The current collecting portion is provided with a pressure relief hole for allowing fluid to pass. First supporting members and a second supporting member are separately arranged on two side surfaces, facing each other, of the end cover and the current collecting portion. Projections of the first supporting members and a projection of the second supporting member are intersected in a thickness direction of the end cover.

公开(公告)号：US20180287158A1

公开(公告)日：2018-10-04

申请号：US15917612

申请日：2018-03-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/62

Abstract: Provided is a negative electrode plate. A negative electrode plate includes a negative current collector and a first coating layer arranged on a surface of the negative current collector. The negative electrode plate further includes a second coating layer arranged on a surface of the first coating layer. The first coating layer contains a negative electrode active material. The second coating layer contains a heat-resistant insulating material. The heat-resistant insulating material is selected from an oxide or a hydroxide containing at least one of elements selected from a group consisting of Mg, Si, Zr and Y. In the present application, the second coating layer containing the heat-resistant insulating material is coated on a surface of the conventional negative electrode active material layer, so an instantaneous high power discharge in a short circuit of the secondary battery can be avoided, and a safety performance of the battery can be improved.

公开(公告)号：US20240313309A1

公开(公告)日：2024-09-19

申请号：US18673876

申请日：2024-05-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yikuang JIN ,  Hu XU ,  Weirong ZHUO ,  Mianyu XIE ,  Zhihao XU

IPC: H01M50/152 ,  H01M50/186 ,  H01M50/244 ,  H01M50/249 ,  H01M50/593

CPC classification number: H01M50/152 ,  H01M50/186 ,  H01M50/244 ,  H01M50/249 ,  H01M50/593

Abstract: A battery top cover assembly includes a cover; a connecting member; and an insulating member connected between the cover and the connecting member. The insulating member has a first outer surface exposed outside the cover and the connecting member; and a first seam is present between the first outer surface and the cover, and a second seam is present between the first outer surface and the connecting member. A first sealing portion is disposed at the first seam and configured to cover the first seam, and/or a second sealing portion is disposed at the second seam and configured to cover the second seam.

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.