Copper-Aluminum bimetal negative terminal for EV battery

الوصف

Why CATL and BYD adopt the negative terminal for battery pack made by our Cu-Al bimetal materials instead of previous negative terminal made by traditional friction welding? 

Production Advantages of our new negative terminal: 
1. Prepare Cu-Al bimetal materials our company produced.  
2. Direct Stamping on Cu-Al bimetal materials.  
3. Single machine can produce 20000pcs per day.
4. Normal stamping machine can produce and no limit of production capacity.

Production limit of negative terminal made by traditional friction welding:
1. Buy Copper and Aluminum materials Separetely.
2. Welding Copper and Aluminum together and more steps of processing.
3. Single machine can produce 7000pcs per day.
4. Only friction welding machine can produce with limit of production capacity.







Our Copper-Aluminum Bimetal Composites material is a plating of copper on aluminum. The two metals are combined together through our patented technology which we called Oxygen-free Semi-molten rolling compound technology. This technology solves the technical problems of oxidation and eutectic of copper-aluminum composite. 


Copper-Aluminum Bimetal Composites strips Features
 
1. Dimensions and allowable tolerances of copper-aluminum composite materials
       
Sheet1: Strip thickness and width and allowable tolerances  (Unit：mm )