公开(公告)号：US20250167310A1

公开(公告)日：2025-05-22

申请号：US19033274

申请日：2025-01-21

Applicant: Google LLC

Inventor： Jianmin Zhang ,  Mingfeng Xue ,  Chi Kin Benjamin Leung ,  Ramesh C. Bhardwaj ,  Sheba Devan

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/497 ,  H01M50/531

Abstract: The present document describes a low-emission cylindrical-winding battery design. The battery design is a rolled and stacked battery, with two or more winding rolls of cathode and anode layers separated by insulation layers, the winding rolls also being separated by a distance with the distance, in some embodiments, filled with a dielectric material. A first winding roll of first stacked anode and cathode layers and a second winding roll of second stacked anode and cathode layers are wound in a direction around a central axis of the battery. The first winding roll of first stacked anode and cathode layers follows a first stacking order with the anode and cathode layers alternating. The second winding roll of second stacked anode and cathode layers follows a second stacking order with the anode and cathode layers alternating opposite to the first stacking order. The alternating stacking orders cause the battery to produce a reduced H-field when compared with a battery having non-alternating stacking orders.

公开(公告)号：US20240266692A1

公开(公告)日：2024-08-08

申请号：US18164316

申请日：2023-02-03

Applicant: Google LLC

Inventor： Shengyin Ding ,  Sheba Devan

IPC: H01M50/55 ,  H01M50/109 ,  H01M50/531 ,  H01M50/559 ,  H01M50/566

CPC classification number: H01M50/55 ,  H01M50/109 ,  H01M50/531 ,  H01M50/559 ,  H01M50/566 ,  H01M2220/30

Abstract: The present document describes a battery configuration for reducing electromagnetic interference (EMI). The battery configuration includes a coin cell (e.g., stacking battery cell, button cell) with predefined external-tab configurations and a predefined internal-tab angle for reducing electromagnetic (EM) coupling. In particular, internal tabs are positioned to be separated by an angle (e.g., a predefined internal-tab angle) of approximately 90 degrees. External tabs include (i) a first external tab connected to a side of the coin cell and extending to overlap a top surface of the coin cell and (ii) a second external tab connected to the top surface of the coin cell. Both external tabs are positioned relative to the internal tabs to reduce an H-field and/or an E-field created by current running through the coin cell.

公开(公告)号：US20240204239A1

公开(公告)日：2024-06-20

申请号：US18593008

申请日：2024-03-01

Applicant: Google LLC

Inventor： Jianmin Zhang ,  Mingfeng Xue ,  Chi Kin Benjamin Leung ,  Ramesh C. Bhardwaj ,  Sheba Devan

IPC: H01M10/04 ,  H01M50/497

CPC classification number: H01M10/0431 ,  H01M50/497

Abstract: The present document describes a low-emission cylindrical-winding battery design. The battery design is a rolled and stacked battery, with two or more winding rolls of cathode and anode layers separated by insulation layers, the winding rolls also being separated by a distance with the distance, in some embodiments, filled with a dielectric material. A first winding roll of first stacked anode and cathode layers and a second winding roll of second stacked anode and cathode layers are wound in a direction around a central axis of the battery. The first winding roll of first stacked anode and cathode layers follows a first stacking order with the anode and cathode layers alternating. The second winding roll of second stacked anode and cathode layers follows a second stacking order with the anode and cathode layers alternating opposite to the first stacking order. The alternating stacking orders cause the battery to produce a reduced H-field when compared with a battery having non-alternating stacking orders.