The invention uses an electric pulse process to process the rolled pole pieces. After the pole pieces are rolled, the baseband will deform, causing dislocations in the internal crystal structure of the baseband, resulting in reduced baseband toughness, brittleness, and subtle cracks. Cracks are processed through electric pulses to eliminate dislocations inside the metal and improve the toughness of the baseband. Besides, electric pulses can also repair fine cracks inside the metal. At the same time, after electric pulse treatment, recrystallization will occur between particles. Originally, electron conduction between particles was through point contact. After treatment, electron conduction is through surface contact, thereby reducing resistance and improving conductivity.

There are broad application prospects for this patent, such as in the field of new energy vehicle power batteries. All companies in the lithium-ion battery industry will likely use this technology, especially power battery companies.