公开(公告)号：US20240375217A1

公开(公告)日：2024-11-14

申请号：US18779113

申请日：2024-07-22

Applicant: TRUMPF (China) Co., Ltd.

Inventor： Yuan Liu ,  Zekai Hou ,  Franz Lehleuter

IPC: B23K26/12 ,  B23K26/21

Abstract: A gas assistance device for laser welding includes an assistance gas unit configured to apply an assistance gas to a site to be welded, and a fume suction unit configured to suck fumes generated during laser welding. The assistance gas unit is provided with an assistance gas nozzle. The fume suction unit is provided with a fume suction port. The assistance gas nozzle includes a first slit-shaped opening. The fume suction port includes a second slit-shaped opening. The fume suction unit is at least partially attached to the assistance gas unit. In an operating state of the gas assistance device, the second slit-shaped opening is at least partially located above the first slit-shaped opening.

公开(公告)号：US20230364711A1

公开(公告)日：2023-11-16

申请号：US18356248

申请日：2023-07-21

Applicant: TRUMPF (China) Co., LTD.

Inventor： Franz Lehleuter ,  Yuan Liu ,  Zekai Hou

IPC: B23K26/082 ,  B23K31/12 ,  B23K26/20 ,  B23K26/03

CPC classification number: B23K26/082 ,  B23K31/125 ,  B23K26/206 ,  B23K26/032

Abstract: A laser welding system for sealing welding a cell top cover includes a laser emitting device for generating a scanning welding laser beam to be irradiated to a portion of the cell top cover to be welded, and a control device for controlling the laser emitting device to perform continuous scanning sealing welding on the cell top cover. The laser welding system is configured to complete the sealing welding of the cell top cover at only one work station.

公开(公告)号：US20240326170A1

公开(公告)日：2024-10-03

申请号：US18661765

申请日：2024-05-13

Applicant: TRUMPF (China) Co., LTD.

Inventor： Weiyu Wang ,  Zekai Hou ,  Franz Lehleuter ,  Yuan Liu ,  Lu Zhang

IPC: B23K26/26 ,  B23K26/32 ,  B23K101/36 ,  H01M4/04 ,  H01M4/139 ,  H01M4/66 ,  H01M10/0525

CPC classification number: B23K26/26 ,  B23K26/32 ,  H01M4/0471 ,  H01M4/139 ,  H01M4/661 ,  H01M4/667 ,  H01M10/0525 ,  B23K2101/36

Abstract: A welding seam is formed by welding a multi-layer aluminum foil stack of a current collector of a battery and a part by a remelting step, in which a welding seam edge of the welding seam is remelted by a laser beam with a heat input that is lower than the heat input for forming the welding scam.