公开(公告)号：US20200321591A1

公开(公告)日：2020-10-08

申请号：US16429914

申请日：2019-06-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Dongyang Shi ,  Yuanbao Chen ,  Haizu Jin ,  Zhenhua Li ,  Ning Chen ,  Fei Hu ,  Tian Wu

IPC: H01M2/24 ,  H01M2/26 ,  H01M2/04

Abstract: The present invention relates to a secondary battery and a battery module. The secondary battery includes: a casing including a receiving cavity having an opening; a top cover assembly, and an electrode assembly disposed in the receiving cavity, wherein the electrode assembly includes two end faces disposed opposite to each other in a first direction perpendicular to a depth direction of the receiving cavity, a lug extending from each end face; the lug is a layered structure and has a redundant section near the end face and a connecting section connected to the redundant section; the current collecting member includes a current collecting portion fixedly connected to the connecting section. The lug of the secondary battery of the embodiment of the present invention has the redundant section, which can effectively buffer the movement and reduce the possibility that the lug is torn or broken due to an excessive tensile stress.

公开(公告)号：US20200212412A1

公开(公告)日：2020-07-02

申请号：US16437932

申请日：2019-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Xingdi Chen ,  Ning Chen ,  Fei Hu

IPC: H01M2/26 ,  H01M10/0587 ,  H01M10/04 ,  H01M2/04 ,  H01M2/10

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module comprises two or more secondary batteries arranged side by side in a first direction, each of which includes a case, an electrode assembly and a closing portion, wherein the case has a receiving hole comprising an opening and extending in a second direction, and the first direction intersects with the second direction, wherein the closing portion is sealingly connected with the case to close the opening, the electrode assembly is disposed in the receiving hole and includes two or more electrode units, the electrode unit includes a first electrode plate, a second electrode plate and a separator, and the two or more electrode units are stacked in the second direction.

公开(公告)号：US20200212379A1

公开(公告)日：2020-07-02

申请号：US16817289

申请日：2020-03-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Yuanbao Chen ,  Ning Chen ,  Haizu Jin ,  Zhenhua Li ,  Fei Hu

IPC: H01M2/04 ,  H01M2/26 ,  H01M2/06 ,  H01M10/0525

Abstract: The present disclosure provides a secondary battery and a battery module. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly comprises electrode units stacked in an axial direction of the accommodating cavity. The cap assembly comprises a cap plate and a vent piece, the cap plate is connected with the case and positioned at a side of the electrode assembly in the axial direction. The cap plate is provided with a through-hole, and the vent piece covers the through-hole. The cap plate has a first inner surface, the vent piece has a second inner surface, and a distance between the first inner surface and the electrode assembly is larger than a distance between the second inner surface and the electrode assembly.

公开(公告)号：US20240120603A1

公开(公告)日：2024-04-11

申请号：US18536262

申请日：2023-12-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiayi Wu ,  Jingjing Yu ,  Wenzhong Liu ,  Yu Tang ,  Zhenhua Li ,  Xing Li

IPC: H01M50/289 ,  H01M50/209 ,  H01M50/262 ,  H01M50/271

CPC classification number: H01M50/289 ,  H01M50/209 ,  H01M50/262 ,  H01M50/271

Abstract: Provided are a battery, an electrical apparatus, and a method and an apparatus for making a battery. The battery comprises: a battery cell; a first component, wherein a first surface of the first component is connected to at least one of the battery cells through an adhesion member, the adhesion member comprises a first adhesion structure and a second adhesion structure, the first adhesion structure is located at the periphery of the second adhesion structure, and the first adhesion structure has an elongation at break greater than that of the second adhesion structure. The battery, the electrical apparatus, and the method and the apparatus for making the battery according to the embodiments of the present application can enhance the safety of the battery.

公开(公告)号：US20230170567A1

公开(公告)日：2023-06-01

申请号：US18048449

申请日：2022-10-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu Tang ,  Xiayi Wu ,  Zeliang Yang ,  Zhenhua Li ,  Peng Wang

IPC: H01M50/204 ,  H01M10/04 ,  H01M50/325 ,  H01M50/262 ,  H01M50/242

CPC classification number: H01M50/204 ,  H01M10/0413 ,  H01M10/0431 ,  H01M50/325 ,  H01M50/262 ,  H01M50/242 ,  H01M2220/20

Abstract: Various embodiments provide a battery and a method for manufacturing the battery, an apparatus of manufacturing the battery and an electricity-consuming device. In some embodiments, the battery includes a battery cell; a case assembly configured to accommodate the battery cell and including a first portion, in which the first portion is arranged at least one side of the battery cell in a first direction; and a first bonding member, in which at least part of the first bonding member is filled between the first portion and the battery cell and bonds the first portion and the battery cell. A first gap is formed between the first portion and the battery cell, and the first gap is configured to release an expansion stress when the battery cell expands. The solutions provided by the embodiments of the present disclosure can improve the energy density and safety of the battery, and prolong the service life of the battery.

公开(公告)号：US11335978B2

公开(公告)日：2022-05-17

申请号：US16424058

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao Chen ,  Rui Yang ,  Dongyang Shi ,  Ning Chen ,  Fei Hu ,  Zhenhua Li

IPC: H01M10/04 ,  H01M50/531 ,  H01M50/20

Abstract: The disclosure relates to a secondary battery and a battery module. The secondary battery comprises: a case comprising a receiving hole having an opening; a cap assembly sealingly connected with the case to close the opening; an electrode assembly disposed in the receiving hole, wherein the electrode assembly comprises two end surfaces opposite to each other in a first direction perpendicular to an axial direction of the receiving hole and tabs extending from respective end surfaces, and the electrode assembly comprises two or more electrode units which are stacked in the axial direction; and a current collecting unit comprising a first sheet and a first current collecting sheet connected to the first sheet, wherein both the first sheet and the first current collecting sheet extend in the axial direction, and the tab is bent with respect to the first direction and is electrically connected to the first current collecting sheet.

公开(公告)号：US11196044B2

公开(公告)日：2021-12-07

申请号：US17057527

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yaohui Wang ,  Xing Li ,  Zhenhua Li

IPC: H01M4/36 ,  H01M50/581 ,  H01G11/28 ,  H01G11/32 ,  H01M4/06 ,  H01M4/13 ,  H01M4/62 ,  H01M6/50 ,  H01M10/42 ,  H01M4/02

Abstract: The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, the safety coating including a polymer matrix and a conductive material, wherein the polymer matrix is fluorinated polyolefin and/or chlorinated polyolefin, and when the safety coating and the positive active material layer are collectively referred to as a positive film layer, the positive film layer includes Na ions and/or K ions at a content of 100 ppm or more, and has an absorption peak at 1646 cm−1 in infrared absorption spectrum. The positive electrode plate may improve safety performance at elevated temperature of the electrochemical device by quickly disconnecting the circuit at high temperature conditions or when an internal short circuit occurs.

公开(公告)号：US11095008B2

公开(公告)日：2021-08-17

申请号：US17043711

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xing Li ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/62 ,  H01M50/581 ,  H01M4/66 ,  H01M4/02

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：US20200295317A1

公开(公告)日：2020-09-17

申请号：US16890457

申请日：2020-06-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fei HU ,  Dongyang Shi ,  Haizu Jin ,  Zhenhua Li ,  Ning Chen ,  Yuanbao Chen ,  Rui Yang

IPC: H01M2/04 ,  H01M10/04 ,  H01M2/26 ,  H01M2/30

Abstract: The present disclosure provides a secondary battery, a battery module and a vehicle. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly includes electrode units, and the electrode units are stacked in an axial direction of the accommodating cavity. The cap assembly includes a cap plate and an insulating member provided at an inner side of the cap plate, the cap plate is connected with the case, and the insulating member is positioned at a side of the electrode assembly in the axial direction. The insulating member is provided with a first surface at a side close to the electrode assembly, and the first surface is a flat surface.

公开(公告)号：US20200212411A1

公开(公告)日：2020-07-02

申请号：US16424048

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fei Hu ,  Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Ning Chen ,  Yuanbao Chen

IPC: H01M2/26 ,  H01M10/0587 ,  H01M10/04 ,  H01M2/04 ,  H01M2/10

Abstract: The present disclosure relates to a secondary battery and a battery module. The secondary battery comprises a case, comprising a base plate and a side plate connected with the base plate, wherein the base plate and the side plate form a receiving hole and an opening in communication with the receiving hole, the opening is arranged opposite to the base plate in an axial direction of the receiving hole, and the base plate has a thickness larger than that of the side plate; a cap assembly, sealingly connected with the side plate to close the opening; and an electrode assembly, disposed in the receiving hole and comprising two or more electrode units, which are stacked in the axial direction, and each electrode unit is arranged with a wide side opposite to the base plate and a narrow side toward the side plate.