In the structure of a lithium battery, the diaphragm is one of the key inner-layer components. The performance of the diaphragm determines the interface structure, internal resistance, etc. of the battery, directly affects the characteristics of the battery, cycle, and safety performance, and excellent performance of the diaphragm is important to improve the overall performance of the battery. The main function of the diaphragm is to separate the positive and negative electrodes of the battery to prevent both poles from being short-circuited, and therefore also have functions that enable electrolyte ions. The diaphragm material is not electrically conductive, and its physical chemical properties have a great influence on the performance of the battery. The type of battery is different, and the separator employed is also different. For the lithium battery series, since the electrolyte is an organic solvent system, a diaphragm material having an organic solvent is generally used, and a high-strength film-made polyolefin porous film is generally employed.
The PET film is also called high temperature polyester film, which has excellent heat resistance, cold resistance, oil resistance, and chemical resistance. According to its function, it can be divided into PET high-shining film, chemical coating film, PET antistatic film, PET thermal sealing film, PET heat shrinkable film, aluminized PET film, and the like.
Most of the traditional processing is desirantn, but for manufacturers with high batches, multi-varieties and processing precision, the opening cost is high and the accuracy does not meet the standard. Therefore, the new technology laser cut is adopted by the advantages of its unique operation, automation operation, and fine processing, has become more and more machined by various PET film. Cutting on some films, using red light lasers, there will be yellowed phenomenon. Therefore, the mechanical equipment uses the purple light "cold processing", "heat small", and the ultraviolet laser cutting the PET film is used to make up for the lack of red light processing.
Lithium battery cell and PET film; various electronic equipment inner heat-insulating block films adopt laser shaped cutting advantage characteristics:
1, good effect: the purple cutting is "cold processing", and the film material is cut, and the incision is flat.
2, high efficiency: use the precision interactive workbench, configure the automatic / manual working mode to meet the multi-station production automation needs, and improve production efficiency.
3, good performance: use US imported famous brand Violet lasers, the beam quality is high, can achieve superfine marking.
4, high yield: Violet does not generate thermal effects, avoid deformation of the processing materials, saving materials.
5, environmental safety: full enclosed safety rack, protect the security of the operator.
6, low operating costs: simple machine operation, no consumables, low power consumption.
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