公开(公告)号：US11881588B2

公开(公告)日：2024-01-23

申请号：US17352352

申请日：2021-06-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao Chen ,  Rui Yang ,  Haizu Jin ,  Dongyang Shi ,  Ning Chen ,  Quankun Li

IPC: H01M50/538 ,  H01M50/209 ,  H01M50/533 ,  H01M50/186

CPC classification number: H01M50/186 ,  H01M50/209 ,  H01M50/533 ,  H01M50/538

Abstract: The present application relates to a secondary battery and a battery module. The secondary battery comprises: a casing, which is provided with an accommodating hole with an opening; a top cover assembly, which is in sealed connection with the casing to close the opening; an electrode assembly, which is arranged in the accommodating hole, and comprises two end faces opposite to a first direction perpendicular to an axial direction of the accommodating hole, and tabs extending from the end faces, the electrode assembly comprises two or more electrode units, wherein two or more electrode units are stacked in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the size of the tabs is smaller than that of the end faces; and a current collector, which comprises a body portion.

公开(公告)号：US11177539B2

公开(公告)日：2021-11-16

申请号：US17356565

申请日：2021-06-24

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M2/20 ,  H01M50/502 ,  H01M50/147 ,  H01M50/533 ,  H01M50/54 ,  H01M50/543 ,  H01M10/04 ,  H01M10/058 ,  H01M50/50 ,  H01M50/531 ,  H01M10/0525 ,  H01M50/538

Abstract: The present application relates to a current collector and a secondary battery. The current collector is used to electrically connect a pole and tab of a secondary battery, and comprises: a first sheet; a second sheet that is disposed to intersect the first sheet, the second sheet being used to electrically connect to the pole; a current collection unit, the current collection unit and the second sheet being disposed at two opposite sides of the first sheet in a first thickness direction thereof, and the first thickness direction thereof intersecting with a second thickness direction of the second sheet; the current collection unit comprises a first current collection sheet, the first current collection sheet is used to electrically connect to the tab, and the first current collection sheet is provided with a first connection terminal that is connected to the first sheet.

公开(公告)号：US20210328293A1

公开(公告)日：2021-10-21

申请号：US17362960

申请日：2021-06-29

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M50/171 ,  H01M50/54 ,  H01M50/533 ,  H01M50/209

Abstract: The present disclosure relates to a secondary battery and a battery module. The secondary battery includes a case including a receiving space with an opening; a cap assembly connected to the case and close the opening; an electrode assembly disposed in the receiving space and including two end faces opposite to each other in a first direction perpendicular to an axial direction of the receiving space, and tabs extending from the end faces and two or more electrode units stacked in the axial direction; and a current collecting unit, including a first piece extending in the axial direction and a first current collecting piece connected to the first piece, the tab extends in the first direction and is connected to the first current collecting piece, and a portion of the tab connected to the first current collecting piece and the first current collecting piece are stacked in the axial direction.

公开(公告)号：US11139540B2

公开(公告)日：2021-10-05

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: H01M50/54 ,  H01M50/20 ,  H01M50/147 ,  H01M10/04 ,  H01M10/0587

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：US11289762B2

公开(公告)日：2022-03-29

申请号：US16570257

申请日：2019-09-13

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xingdi Chen ,  Kaijie You ,  Linggang Zhou ,  Peng Wang ,  Yanhuo Xiang ,  Ning Chen

IPC: H01M50/20

Abstract: The disclosure relates to a battery pack, which can include an enclosure including an upper cover and a lower case in sealed connection, a plurality of battery modules is arranged in the enclosure, and a first bonding member disposed on the upper surface of the battery modules and intended for connecting the battery modules with the upper cover. The present disclosure can strengthen the connection strength between the upper cover and the battery modules, and improve the overall stiffness of the battery modules.

公开(公告)号：US11245149B2

公开(公告)日：2022-02-08

申请号：US17138716

申请日：2020-12-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M2/04 ,  H01M2/26 ,  H01M2/06 ,  H01M10/0525 ,  H01M50/147 ,  H01M50/538 ,  H01M50/54 ,  H01M50/572 ,  H01M50/204 ,  H01M10/04 ,  H01M50/16 ,  H01M50/164 ,  H01M50/15 ,  H01M50/176

Abstract: Disclosed are a secondary battery, a battery module and an electric vehicle. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The electrode assembly is accommodated in an accommodating chamber of the housing. 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 and an insulating member arranged on an inner side of the top cover plate, the top cover plate being connected to the housing, the insulating member being located on a side of the electrode assembly in the axial direction. A first buffer gap is provided between the insulating member and the top cover plate.

公开(公告)号：US11069942B2

公开(公告)日：2021-07-20

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: H01M2/30 ,  H01M50/529 ,  H01M50/147 ,  H01M50/531

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：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.