●New explosion-proof cover, nickel welding free aluminium cover plate
Step 1, pre punching hole on cover plate

Step 2, Clad aluminum foil on one side of cover plate according to explosion pressure;

 Clad nickel strip to aluminum strip first, then press it;
Advantages:
1. Can reduce cost by mass production and feedback to customer’
 2. Uniform blasting strength, improve battery product consistancy;
3. Free of nickel plating, reduce cost and increase product reliability;