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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).
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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.
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公开(公告)号：US20210119292A1
公开(公告)日：2021-04-22
申请号：US17137172
申请日：2020-12-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Haizu JIN , Fei HU , Zhenhua LI , Dongyang SHI , Rui YANG , Yuqun ZENG , Yongshou LIN
IPC: H01M50/20 , H01M50/15 , H01M50/147
Abstract: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10−5 mm−1≤D/S1≤500×10−5 mm−1.
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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.
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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.
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Patent Agency Ranking
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).
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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
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.
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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
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.
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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.
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公开(公告)号：US20210320337A1
公开(公告)日：2021-10-14
申请号：US17357057
申请日：2021-06-24
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xingdi CHEN , Kaijie YOU , Ziyuan LI , Yanhuo XIANG , Dongyang SHI , Fei HU
Abstract: The application provides a battery module, which includes a plurality of batteries, an upper cover, and a pressing strip. The pressing strip covers an explosion-proof valve of a battery, and includes a main body portion and a bottom plate portion. The bottom plate portion is connected to the main body portion and forms an accommodating cavity together with the main body portion. A fire extinguishing agent is sealed in the accommodating cavity. The bottom plate portion of the pressing strip is configured to be melted. The fire extinguishing agent is constantly stored in the accommodating cavity of the pressing strip, so as to avoid wasteful use of the fire extinguishing agent caused by the same flowing in all directions, so that the amount of the fire extinguishing agent can be maintained at a constant level at all times.
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