In the past two years, many people have known that the battery of an electric vehicle is like the heart of an automobile. As long as its heart is healthy, it will become better. Today, Xinde Laser, a manufacturer of lithium battery laser welding machines, comes to see the manufacturing technology of power batteries!
In the pack industry, a battery that is not assembled for direct use is called a battery cell, while a complete battery that is connected to the PCM board and has charging and discharging control functions is called a battery. In the pack assembly, the battery is a very critical component.
The most commonly used electric cores in PACK are polymer, aluminum shell lithium ion, steel shell lithium ion, and cylindrical electric cores.
With the development of pack technology, welding methods are also constantly improving, from the initial wire welding technology, to nickel sheet welding, to nickel sheet spot welding, to laser spot welding.
Battery pack process:
Laser spot welding process: the electric core and protective plate are connected by nickel sheet metal spot welding, and then the rubber shell is assembled.
Equipment used: laser welding machine
Disadvantages: Very high requirements for product design and process.
Advantages: the product is stable, reliable and consistent.
Lithium battery pack production line process:
Working position in charge area of electric core → code scanning test and gluing of single electric core → pole test → pole test → squeezing and binding → cleaning and welding of installation busbar → installation and welding of sampling line → UV glue, heat conduction glue, gluing of sampling end → communication test → offline of finished module
Overall solution of Xinde laser lithium battery PACK production line