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：US20200235370A1

公开(公告)日：2020-07-23

申请号：US16455751

申请日：2019-06-28

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M2/26 ,  H01M2/10 ,  H01M2/04 ,  H01M10/0585

Abstract: The disclosure relates to a secondary battery and a battery module. The secondary battery comprises a casing, which includes a receiving hole having an opening; a top cover assembly, which includes a top cover plate connected to the casing to close the opening; an electrode assembly disposed within the receiving hole, the electrode assembly has an dimension of 0.01 mm to 1000 mm in an axial direction of the receiving hole, the electrode assembly includes two end faces opposed to each other in a first direction perpendicular to the axial direction and tabs extending from the end faces, the electrode assembly includes two or more electrode units laminated in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the dimension of the tab is smaller than the dimension of the end face; and a current collecting member electrically connected to the tab.

公开(公告)号：US20210320383A1

公开(公告)日：2021-10-14

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: H01M50/502 ,  H01M50/147 ,  H01M50/543 ,  H01M50/54 ,  H01M50/533

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：US20210119287A1

公开(公告)日：2021-04-22

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: H01M50/147 ,  H01M50/572 ,  H01M50/204 ,  H01M50/538 ,  H01M50/54 ,  H01M10/04

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：US20210104795A1

公开(公告)日：2021-04-08

申请号：US17125331

申请日：2020-12-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/148 ,  H01M10/0587 ,  H01M50/155 ,  H01M50/171

Abstract: A secondary battery and a battery unit is provided. The secondary battery includes: a housing including an accommodating hole with an opening; a top cover assembly connected to the housing in a sealed manner to cover and close the opening; an electrode assembly arranged in the accommodating hole, wherein the top cover assembly is spaced apart from the electrode assembly to form a first buffer gap for buffering the amount of expansion deformation of the electrode assembly in the axial direction. When the secondary battery expands, the first buffer gap can absorb the amount of expansion deformation to prevent the top cover assembly from being disconnected from the housing due to excessive stress, so as to reduce the possibility of failure of the secondary battery due to damage of the overall structure, thereby ensuring the structural integrity and the safety of the secondary battery.

公开(公告)号：US20200212406A1

公开(公告)日：2020-07-02

申请号：US16424026

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Dongyang SHI ,  Ning CHEN ,  Zhenhua LI

IPC: H01M2/26

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 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 and tabs extending from respective end surfaces, and there are two or more electrode assemblies stacked in the axial direction; and a current collector comprising an extending portion and a current collecting portion connected to the tab, wherein the extending portion extends in the axial direction, the current collecting portion comprises a connecting end extending in a second direction perpendicular to both the axial direction and the first direction, and is connected to an end of the extending portion away from the cap assembly through the connecting end.

公开(公告)号：US20210328304A1

公开(公告)日：2021-10-21

申请号：US17360307

申请日：2021-06-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaijie YOU ,  Peng WANG ,  Haizu JIN ,  Dongyang SHI ,  Zhenhua LI ,  Ning CHEN ,  Fei HU

IPC: H01M50/383 ,  H01M50/342 ,  H01M50/209

Abstract: The disclosure provides a battery pack, which includes a plurality of batteries and a box, the plurality of batteries accommodated in the box; each battery including an explosion-proof valve; the box including a lower box for supporting the batteries and an upper box matching the lower box, wherein the upper box includes an upper plate and a lower plate, the upper plate covers the lower plate to form an accommodating space for accommodating a fire extinguishing agent; the explosion-proof valve of each battery faces the lower plate of the upper box, and the lower plate is set to be able to discharge the fire extinguishing agent from the accommodating space after being melted. When the battery occurs a thermal runaway, the fire extinguishing agent in the lower plate flows rapidly to the runaway area, thus inhibiting the thermal runaway of the battery.

公开(公告)号：US20230117186A1

公开(公告)日：2023-04-20

申请号：US17939983

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Ning CHEN ,  Shuangshuang LIU ,  Sitong LIU

IPC: H01M4/48 ,  H01M4/04 ,  H01M4/583 ,  H01M10/0525

Abstract: Provided in the present application is a negative electrode plate comprising a current collector and a coating applied to at least one surface of the current collector, the coating comprising a negative electrode active material and a metal powder, wherein the electrode potential of the metal powder in the coating relative to lithium may be between 1.6 and 3.5 V, the negative electrode active material may be a silicon-based material, and relative to the total weight of the silicon-based material and the metal powder, the proportion by weight of the metal powder may be 5 to 20% and the proportion by weight of the silicon-based material may be 80 to 95%.

公开(公告)号：US20220085448A1

公开(公告)日：2022-03-17

申请号：US17419697

申请日：2019-03-25

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M50/213 ,  H01M50/545 ,  B60L50/64 ,  H01M10/04 ,  H01M10/625

Abstract: The present disclosure relates to the technical field of energy storage devices, and provides a battery cell assembly (10), a battery module (100), and a battery pack (200). The battery cell assembly (10) includes: at least two battery cells (1) and an insulation film (2). The at least two battery cells (1) are stacked. Each battery cell (1) includes an electrode assembly (11) and a battery housing (12). The electrode assembly (11) is accommodated in the battery housing (12). The electrode assembly (11) includes a first electrode plate (111), a second electrode plate (112), and a separator (113) disposed between the first electrode plate (111) and the second electrode plate (112). The insulation film (2) surrounds a periphery of the at least two battery cells (1) to wrap the at least two battery cells (1) together. A gap between adjacent battery cells (1) is reduced, which is advantageous not only in increasing an energy density of the battery module (100) and the battery pack (200), but also in reducing the amount of consumption of the insulation film (2).

公开(公告)号：US20200212407A1

公开(公告)日：2020-07-02

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: H01M2/26 ,  H01M2/10 ,  H01M10/04

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.