U-Jin: E-Mobility

U-Jin Tech Corp. is market leader for fully automated friction welding machines for making dissimilar material joints in the high-voltage circuits of electric vehicles


Friction Welded Battery Poles

Copper to aluminium welds made on friction welding machines of U-Jin Tech Corp.
Copper to aluminium welds made on friction welding machines of U-Jin Tech Corp.

U-Jin Tech Corp. manufactures friction welding machines for manufacturers of batteries in electric cars, electric buses and electric delivery vans. The batteries in these vehicles consist of several cells that have to be connected in series to obtain the desired high voltage. The task is to connect the minus pole made of copper with the plus pole made of aluminium. This requires special welding processes at the battery manufacturer because these materials cannot be welded with conventional fusion welding processes.

  


Friction Welded Battery Connection Tabs

Mit den Reibschweißmaschinen von U-Jin Tech Corp. können kostengünstig Aluminium-Kupfer-Mischverbindugen hergestellt werden
Mit den Reibschweißmaschinen von U-Jin Tech Corp. können kostengünstig Aluminium-Kupfer-Mischverbindugen hergestellt werden

Leading battery manufacturers in China are already using more than 15 friction welding machines from U-Jin Tech Corp. to produce copper-aluminum mixed material joints between cylindrical battery terminals and rectangular battery tabs.

Bimetal Cable Lugs for Aluminium Cables

Bimetal cable lugs are incrasingly used for aluminium cables. These consist of aluminium in the area surrounding the strands in order to prevent corrosion in the area of the crimped or soldered package of strands. However, since aluminium is not sufficiently creep-resistant under long-term stress, the eye in the area of the screw connection with other components is normally made of copper. U-Jin's friction welding machines offer a cost-optimized way of producing these mixed material joints in large quantities while meeting the highest quality requirements.

Further Information

AluStir has been nominated to act worldwide as sales representative of U-Jin Tech Corp. in South Korea. In close cooperation, we are able to respond to any enquiries regarding the feasibility of friction welded joints and help you with machine specifications. We will be pleased to provide you with a quotation for a friction welding machine tailored to your needs. Please contact us by e-mail (stephan.kallee@alustir.com) or telephone (+49 6024 636 0123) if you require further information or a quotation for a machine.