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Photovoltaic plasma equipment Application of photovoltaic cell to produce plasma

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09 Mar,2021

Photovoltaic plasma equipment Application of photovoltaic cell to produce plasma:
Plasma equipment used in photovoltaic batteries can be ion cleaning, etching, plasma plating, plasma coating, plasma ash, surface activation, modification and other occasions, the material processing, can improve the wetting ability of the material, enhance the bonding force, bonding force, while removing organic matter, oil or grease. In order to ensure the product quality and meet the technical requirements in the production process of photovoltaic cell modules, plasma treatment is carried out on the backboard materials and junction boxes required by photovoltaic cell modules to ensure that the bonding force meets the specification requirements.
At present, the manufacturing of photovoltaic module plasma processing is mainly manually operated, which is time-consuming and laborious. Moreover, the distance between the plasma gun head and the back panel cannot be accurately controlled, which is easy to cause damage to the back panel.

CRF plasma equipment
Photovoltaic back-shelf plasma automation reconstruction refers to the current edge scanning device is installed above the workbench converted into superposed assembly line, the control mode from artificial start to automatic control, and docking with the assembly line implementation component in place after the plasma processor automatically start to plasma processing component adhesive junction box area, drive plasma processor spear in reciprocating feed component junction box area scanning process, after the completion of the automatic stack storage.


The specific process is as follows: the flow direction of the line body is from left to right; The product flows from the connection with the upper station and is sent to the lower part of the robot along with the conveying drag chain line. After the product is blocked, the conveying drag chain line stops conveying; The positioning cylinder jacks and positions the product; The transmission line PLC outputs the completed positioning signal to the robot. After the robot receives the positioning signal, it runs to carry out the elliptical plane trajectory of the product and complete the processing of the product surface. After the robot outputs the signal of the completed track to the conveying line PLC, the conveying line runs again and sends the finished surface products to the next station.


The bottom plate automatic plasma scanning is carried out by stepping motor of Siemens PLC200 controlling X axis and Y axis, which drives the bottom plate gun in the junction box area of the bottom plate of the plasma processor (the area is 150*150MM) to carry out reciprocating feed scanning. Feed 40MM each time, feed 3 times, reciprocating 4 times, scanning length 150MM. Return to the origin and prepare for the next scan.


The main function of the junction box is to connect the electricity generated by the photovoltaic cell to the outside line. The leading wire inside the component is connected with the inner wire in the junction box, and the inner wire is connected with the external cable, so that the component is communicated with the external cable. The connecting box is bonded to the bottom plate of the assembly by silica gel. In order to increase the bonding force between the assembly and the bottom plate, plasma treatment is usually required at the bonding area.


The high frequency plasma generator is connected with the plasma generator through a flexible conduit. The high frequency plasma generator is mounted on a smooth rail bar arranged above the worktable, and a longitudinal strip-shaped work piece rail is arranged in the central position of the upper part of the worktable. The PC controller is connected with the hand-controlled switch, the high-frequency plasma generator and the workbench. Based on the single chip microcomputer, the trajectory of X axis and Y axis is set, and the working parts track of the plasma generator and the workbench is synchronously controlled to realize the plasma automatic scanning of the wire box.


The results of plasma scanning were effectively improved through automation: the improved plasma treatment was about 59 dynes, compared with about 38 dynes for manual scanning (the dyne value varies with different products). The surface tension of the junction box is increased, so as to improve the binding strength of the junction box and the back plate, so that the bearing tension of the junction box is increased from 110N to 158N. Dry and wet insulation test, protection grade test, freezing test and humidity and heat test were carried out on the modified components, all of which met the test standards. Increase the precision of plasma treatment by mechanical positioning, and reduce the backplate scald. Before the transformation, the number of backboard scald defective products was reduced from the original 5 to 0, which realized the zero manufacturing of backboard scald defective products.


After the transformation of plasma automatic scanning, the automation degree of production line is increased, the tedious working procedure is reduced, the production cycle is shortened, and the mechanical operation of plasma processing of components is realized, and the effect of plasma scanning is effectively improved. After the implementation, the quality of backboard scald products was reduced from 5 months/month to 0 months/piece, and zero manufacturing of backboard scald products was realized. At the same time, the daily increase of 85 production, reduce the staff of 2 people, worthy of photovoltaic industry promotion.

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