公开(公告)号：US20220320638A1

公开(公告)日：2022-10-06

申请号：US17709907

申请日：2022-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Yuyang Dong ,  Dongyang Yan ,  Qiao Zeng

IPC: H01M50/129

Abstract: A battery includes a first electrode, a second electrode, a first layer, and a housing. The first electrode includes a first conductor having a first face and a second face, and a first metal plate connected to the first face. The second electrode includes a second conductor having a third face and a fourth face, and a second metal plate connected to the third face of the second conductor. The first layer includes an insulating material and is connected to a first surface of the first metal plate and a third surface of the second metal plate. The housing includes a first part and a second part, and covers the first electrode, the second electrode, and at least part of the first layer through the first part and the second part, where at least part of the first part is connected to the first layer.

公开(公告)号：US20250125455A1

公开(公告)日：2025-04-17

申请号：US18991852

申请日：2024-12-23

Applicant: Ningde Amperex Technology Limited

Inventor： Hongzhan Yang ,  Qiao Zeng ,  Dongyang Yan

IPC: H01M50/109 ,  H01M10/04 ,  H01M10/0587 ,  H01M50/503

Abstract: A button cell includes an electrode assembly, a first housing, and a second housing, where the first housing and the second housing are connected and mated to form an accommodating space. The electrode assembly is disposed in the accommodating space. The first housing includes a first bottom wall and a first side wall connected to the first bottom wall. The first bottom wall is provided with a groove. A size of the first bottom wall in a first direction is T μm, and a size of the groove in the first direction is H μm, where 0.1T≤H≤0.7T and the first direction is perpendicular to the first bottom wall.

公开(公告)号：US20220223918A1

公开(公告)日：2022-07-14

申请号：US17710188

申请日：2022-03-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Dongyang Yan ,  Shenzhao Qiu ,  Fei Wu

IPC: H01M10/0583 ,  H01M10/0525

Abstract: A secondary battery includes a first electrode sheet including a plurality of first conductive layers and a plurality of first bending portions and a second electrode sheet including a plurality of second conductive layers and a plurality of second bending portions. Two adjacent first conductive layers are connected through one of the first bending portions, and two adjacent second conductive layers are connected through one of the second bending portions. The plurality of first conductive layers and the plurality of second conductive layers are alternately stacked. Viewed along the first direction perpendicular to a surface of the first conductive layer, each first bending portion includes a first edge extending along a second direction perpendicular to the first direction; and each second bending portion includes a second edge extending along a third direction perpendicular to the first direction. The second direction is different from the third direction.

公开(公告)号：US20220384885A1

公开(公告)日：2022-12-01

申请号：US17708325

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Dongyang Yan ,  Fei Wu ,  Qiao Zeng

IPC: H01M50/186 ,  H01M50/191 ,  H01M50/586 ,  H01M50/184

Abstract: A battery includes a conductive piece, an electrode assembly, and a housing including a first wall provided with an opening, a second wall disposed opposite to the first wall along a first direction, and a sidewall. An accommodation cavity accommodating the electrode assembly is formed between the first wall, the second wall, and the sidewall. In the first direction, a projection of the conductive piece is at least partly located in a region of a projection of the opening. The battery further includes a sealing structure disposed at an end of the first wall towards the conductive piece and connected to the first wall and an insulation piece disposed between the sealing structure and the conductive piece. A thermal expansion coefficient of at least one of the sealing structure or the conductive piece is greater than a thermal expansion coefficient of the insulation piece.

公开(公告)号：US20220252498A1

公开(公告)日：2022-08-11

申请号：US17702097

申请日：2022-03-23

Applicant: Ningde Amperex Technology Limited ,  Dongguan Amperex Technology Limited

Inventor： Dongyang Yan ,  Weidong Wang ,  Xinhui Zhou

IPC: G01N15/08 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

Abstract: A method for determining injection mass of electrolyte for a battery includes: determining a total volume V1 of pores in a positive electrode active material layer, a negative electrode active material layer, and a separator of the battery; determining a volume V2 of electrolyte required by the negative electrode active material layer to ensure battery cycles; determining a volume V3 of electrolyte consumed by the battery in a formation process; determining a volume V4 of electrolyte consumed by the battery in an injection process; and determining the injection mass of electrolyte for the battery: MEl=(V1+V2+V3+V4)×ρEl. The injection mass of electrolyte for the battery is closer to actual optimal injection mass, which improves the accuracy of the electrolyte injection process, provides better electrochemical performance of the battery, and lowers the research and development costs of the battery.

公开(公告)号：US20230238664A1

公开(公告)日：2023-07-27

申请号：US18128605

申请日：2023-03-30

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED ,  DONGGUAN AMPEREX TECHNOLOGY LIMITED

Inventor： Yuyang Dong ,  Dongyang Yan ,  Qiao Zeng

IPC: H01M50/538

CPC classification number: H01M50/538

Abstract: An electrode assembly comprises: a first electrode plate, a second electrode plate and a first layer containing an insulating material, the first layer is sandwiched between the first electrode plate and the second electrode plate, and the first electrode plate, the second electrode plate and the first layer are stacked and then partially folded back to form the electrode assembly; the first electrode plate includes a first surface and a second surface that are opposite to and connected with each other, the first surface and the second surface are formed by the folding-back and separated by an inflection point of the folding-back; a first distance is provided between the first surface and the second surface in a first direction; the first distance is different along a second direction perpendicular to the first direction.

公开(公告)号：US11444331B2

公开(公告)日：2022-09-13

申请号：US16652521

申请日：2020-01-21

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Dongyang Yan ,  Liangzhen Xiao

IPC: H01M10/00 ,  H01M10/058 ,  H01M50/183 ,  H01M50/463 ,  H01M10/04

Abstract: The present application relates to a battery cell and an electronic device. The battery cell according to an embodiment comprises: an electrode assembly, including an electrode plate; and a shell, receiving the electrode assembly and including a first edge seal, a second edge seal and a circular edge seal connecting the first edge seal and the second edge seal, wherein the circular edge seal defines a virtual circular arc region with a radius R and a radian angle Ø, wherein the electrode plate has a first edge, a second edge, and a third edge connecting the first edge and the second edge, and a virtual extension line of the first edge and a virtual extension line of the second edge intersect to form a virtual intersection point A; a point on the third edge has a minimum distance L relative to the virtual intersection point A; and the virtual extension lines of the first edge and the second edge form a corner at the virtual intersection point A toward the third edge, and an angle of the corner is greater than 0 degrees and less than 180 degrees. The battery cell and the electronic device provided by the present application have higher safety performance, a higher space utilization ratio and a higher energy density.