With the enhancement of the whole human society's awareness of environmental protection and the improvement of scientific and technological level, the automotive industry is booming in the Chinese market. Especially in recent years, the development momentum of new energy vehicles with lithium battery as power unit is rapid.

At present, the production process of lithium battery is becoming more and more mature, and the application scope is becoming wider and wider. Therefore, the packaging requirements for lithium battery modules are different under different application conditions, Some of them include lithium batteries packed with polymer shell, breathable and waterproof devices of batteries, and metal polymer plastic welding structure.

At present, polymers mainly use materials such as PPA + GF30%, PA66 + GF30%, PBT + GF30%, PP + GF30%.

There are many electronic components inside the lithium battery. The conventional sealing includes gluing or vibration welding and hot plate welding, while the use of vibration friction or ultrasonic welding and hot plate welding has a direct or indirect impact or damage on the internal components.

However, the gluing method has high environmental protection requirements at present, and the glue has an aging cycle. In addition, from the perspective of cost, the cost of gluing is much higher than the welding cost.

Since the sealing requirements of electronic components are also relatively high, no air leakage or leakage is allowed, and the basic requirements for sealing are IP67 or even ip69. Therefore, the overall sealing requirements are still relatively high.

Considering the technical requirements of welding products, welding quality, automation requirements and mass production, laser plastic welding is very ideal and meets the process requirements.

The welding process can realize real-time closed-loop control, which can also meet the requirements of the current automatic production line. It can be integrated into the automatic production line and realize unmanned automatic welding.

In addition, the real-time closed-loop control of the welding process can be analyzed according to the set technical parameters to judge whether the welding of the product is OK / ng, or upload MES data to realize automatic traceability production.

At present, the lithium battery industry, from soft package to square battery and even the internal heat dissipation system of pack box, involves plastic welding and plastic metal link technology. At present, our company is also cooperating in depth with customers' needs to develop applications in this field, and has also reserved a lot of relevant welding materials and detailed schemes. At the same time, we welcome you to communicate with us.