公开(公告)号：US20250132452A1

公开(公告)日：2025-04-24

申请号：US18989718

申请日：2024-12-20

Applicant: Ningde Amperex Technology Limited

Inventor： Huimin GAO ,  Dongyang YAN

IPC: H01M50/342 ,  H01M50/109 ,  H01M50/533 ,  H01M50/536

Abstract: A button cell includes an electrode assembly, a first electrode tab, and a housing provided with an accommodating cavity. The housing includes a first wall, a first end of the first electrode tab is connected to the electrode assembly, and a second end of the first electrode tab is connected to the first wall. The housing is provided with a groove including at least two continuously connected curves. Viewed from a direction perpendicular to the first wall, a projection of the first electrode tab on the first wall is a first projection, at least a portion of the at least two continuously connected curves is located outside the first projection, and a quantity of intersection points between a contour of the first projection and the at least two continuously connected curves is less than or equal to 2.

公开(公告)号：US20250062385A1

公开(公告)日：2025-02-20

申请号：US18937292

申请日：2024-11-05

Applicant: Ningde Amperex Technology Limited

Inventor： Huimin GAO ,  Qiao ZENG

IPC: H01M10/04 ,  H01M50/109

Abstract: A button cell includes a winding body, a first metal plate and a first layer. The winding body includes a first current collector. The first metal plate is connected to the first current collector at a first portion. The first layer covers the first portion. In the winding direction, the first layer includes a first side edge and a second side edge, the first side edge intersects with the first current collector at a first end point, and the second side edge intersects with the first current collector at a second end point. A line connecting the first end point and a winding central axis is defined as a first virtual line, a line connecting the second end point and the winding central axis is defined as a second virtual line, and an included angle between the first virtual line and the second virtual line is 54° to 66°.

公开(公告)号：US20250023163A1

公开(公告)日：2025-01-16

申请号：US18901124

申请日：2024-09-30

Applicant: Ningde Amperex Technology Limited

Inventor： Dongyang YAN ,  Qiao ZENG ,  Huimin GAO

IPC: H01M50/171 ,  H01M50/109 ,  H01M50/186 ,  H01M50/193

Abstract: A battery includes an electrode assembly, a first housing, and a second housing. The first housing includes a first bottom wall and a first peripheral wall. The second housing includes a second bottom wall and a second peripheral wall. The first peripheral wall is arranged outside the second peripheral wall in a sleeving manner. Here, the second peripheral wall includes a first annular segment and a second annular segment, the second annular segment is located on one side of the first annular segment back away from the second bottom wall, the first annular segment is spaced apart from the first peripheral wall with a spacing of T1, the second annular segment is spaced apart from the first peripheral wall with a spacing of T2, and 30%≤T2/T1≤95%.

公开(公告)号：US20240372129A1

公开(公告)日：2024-11-07

申请号：US18778048

申请日：2024-07-19

Applicant: Ningde Amperex Technology Limited

Inventor： Huimin GAO

IPC: H01M10/04 ,  H01M4/66 ,  H01M50/105 ,  H01M50/533

Abstract: An electrode assembly includes a first conductive layer, a second conductive layer, and a first layer disposed between the first conductive layer and the second conductive layer, where the first layer contains an insulating material. The first conductive plate is connected to the first conductive layer and extends in a first direction from the first conductive layer. The housing encapsulates the electrode assembly and covers at least a part of the first conductive plate. The housing includes a first side surface opposite the electrode assembly in the first direction. The first conductive layer includes a plurality of sides opposite the first side surface in the first direction; the plurality of sides include a first side group formed by more than two first sides arranged consecutively and a second side group formed by more than two second sides arranged consecutively in a second direction.