公开(公告)号：US20230246272A1

公开(公告)日：2023-08-03

申请号：US18179575

申请日：2023-03-07

Applicant: Ningde Amperex Technology Limited

Inventor： Nan ZHANG ,  Yibo ZHANG ,  Kun YAN ,  Qiaoshu HU

IPC: H01M50/186 ,  H01M50/54 ,  H01M50/119 ,  H01M50/121

CPC classification number: H01M50/186 ,  H01M50/54 ,  H01M50/119 ,  H01M50/121

Abstract: An electrochemical apparatus, including two electrode assemblies and a packaging shell, where the two electrode assemblies are respectively disposed in independent cavities in the packaging shell; each electrode assembly includes two tabs with opposite polarities, where at least one tab of one electrode assembly is connected to one of two tabs of the other electrode assembly, and orthographic projections of the two connected tabs along a seal thickness direction Z overlap to form a tab overlapping region; and a ratio α of an overlapping width of the two connected tabs along a seal length direction X at an outer edge of a seal of the packaging shell viewed along the seal thickness direction Z to a width of either of the two connected tabs satisfies 40%

公开(公告)号：US20240243391A1

公开(公告)日：2024-07-18

申请号：US18622128

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Ning LIU ,  Kun YAN ,  Wei ZHAO ,  Ping HE

IPC: H01M50/103 ,  H01M50/119 ,  H01M50/133

CPC classification number: H01M50/103 ,  H01M50/119 ,  H01M50/133

Abstract: A battery shell includes a first housing. The first housing is configured to be formed by winding a sheet around a first axis. The sheet includes a first end portion and a second end portion. The first housing includes a first sidewall. The first sidewall includes a first flat portion, a first bent portion, and the first end portion. The first sidewall further includes a second flat portion and the second end portion. A wall face of the first flat portion facing away from the first axis is a first wall face. A wall face of the second flat portion facing away from the first axis is a second wall face. As viewed along a thickness direction perpendicular to the second flat portion, a distance between the first wall face and the second wall face is less than a thickness of the second flat portion.

公开(公告)号：US20240047789A1

公开(公告)日：2024-02-08

申请号：US18465236

申请日：2023-09-12

Applicant: Ningde Amperex Technology Limited

Inventor： Kun YAN ,  Zhonghuang XU

IPC: H01M50/105 ,  H01M50/474 ,  H01M10/04 ,  H01M50/538 ,  H01M50/54

CPC classification number: H01M50/105 ,  H01M50/474 ,  H01M10/0431 ,  H01M50/538 ,  H01M50/54 ,  H01M10/0463

Abstract: A flexible battery includes a plurality of electrode assemblies, an electrical connector, elastic insulation members, and a package bag. The electrical connector is electrically connected to two adjacent electrode assemblies. The elastic insulation members are disposed at two end terminals of the electrical connector and have a gap with the electrode assemblies. The package bag is provided with a first dent accommodating the electrode assembly and the elastic insulation member, and a second dent accommodating the electrical connector. In the flexible battery, stress concentration caused by bending after packaging can be effectively reduced, so the package bag and electrical connector of the flexible battery are not prone to fracture, providing effective protection for the electrode assemblies, improving service life of the flexible battery, and ensuring stable performance and safety of the flexible battery.

公开(公告)号：US20240006690A1

公开(公告)日：2024-01-04

申请号：US18470529

申请日：2023-09-20

Applicant: Ningde Amperex Technology Limited

Inventor： Kun YAN ,  Weidong ZHANG ,  Yu DING ,  Daolin LIU

IPC: H01M50/112 ,  H01M50/148 ,  H01M50/531 ,  H01M50/186 ,  H01M10/613 ,  H01M50/519 ,  H01M50/51 ,  H01M50/512 ,  H01M50/503 ,  H01M50/505 ,  H01M50/516

CPC classification number: H01M50/112 ,  H01M50/148 ,  H01M50/531 ,  H01M50/186 ,  H01M10/613 ,  H01M50/519 ,  H01M50/51 ,  H01M50/512 ,  H01M50/503 ,  H01M50/505 ,  H01M50/516 ,  H01M2220/20

Abstract: A battery pack, including a housing, a circuit board, and a plurality of electrode assemblies. The housing includes a first surface and a second surface opposite to each other. The first surface is provided with a plurality of first slots. The battery pack further includes a plurality of first caps, and the plurality of first caps respectively cover the plurality of first slots to form a plurality of mutually separated accommodation spaces. The electrode assemblies each includes an electrode plate assembly, a first electrode tab, and a second electrode tab. The electrode plate assembly is accommodated in the accommodating space. The first tab and the second tab extend out of the accommodating space. At least one first electrode tab and at least one second electrode tab are electrically connected to the circuit board. The structure and the manufacturing process of the battery pack can be simplified.

公开(公告)号：US20230420723A1

公开(公告)日：2023-12-28

申请号：US18466948

申请日：2023-09-14

Applicant: Ningde Amperex Technology Limited

Inventor： Kun YAN ,  Zhonghuang XU

IPC: H01M10/04 ,  H01M4/75 ,  H01M50/124 ,  H01M50/119 ,  H01M50/121 ,  H01M50/105

CPC classification number: H01M10/0431 ,  H01M4/75 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/124

Abstract: An electrode assembly includes a first electrode plate, a separator, and a second electrode plate that are disposed in a stack. The first electrode plate and the second electrode plate respectively have coating areas and empty foil areas arranged at intervals. Centers of the coating areas overlap each other to form a coating portion of the electrode assembly, and centers of the empty foil areas overlap each other to form a flexible portion of the electrode assembly. The first packaging layer coats the coating portion and the flexible portion of the electrode assembly, and the second packaging layer at least coats the first packaging layer on the flexible portion.

公开(公告)号：US20220223982A1

公开(公告)日：2022-07-14

申请号：US17710131

申请日：2022-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Nan ZHANG ,  Yibo ZHANG ,  Kun YAN ,  Qiaoshu HU

IPC: H01M50/529 ,  H01M50/533 ,  H01M50/172 ,  H01M50/112 ,  H01M50/483 ,  H01M50/486 ,  H01M50/193 ,  H01M50/186 ,  H01M50/538 ,  H01M50/54

Abstract: An electrochemical device includes a first electrode assembly, a second electrode assembly, and a packaging shell. The first electrode assembly and the second electrode assembly B are each located in a separate cavity in the packaging shell. Two opposite-polarity tabs of the first electrode assembly and the second electrode assembly are connected in the packaging shell. The connected two opposite-polarity tabs comprise a first tab extending out of the packaging shell. Such design of extending the tabs and the design of ion insulation between the hermetic cavities improve the charge and discharge performance and the product quality of the electrochemical device.