Solar cell defective sheet control process

Silicon wafers are the carriers of solar cells. The quality of the wafers directly determines the conversion efficiency of solar cells. The advantages and disadvantages of solar cells need to be tested and classified. For poor solar cells, how are the production processes controlled? The following is the control process of poor solar cells:

1. Check the quantity, grade (efficiency or power) on the bill of materials when picking material is consistent with the actual object;

2. Before the unpacking, the sorting personnel check whether the outer box is damaged or deformed due to impact. If there is any deformation or damage, the quality control personnel shall confirm on the spot;

3. After the unpacking, the sorting staff confirms the number and grade (efficiency or grade) on the label of each package, and whether it is the same as the issuing list;

4, before unpacking sorting personnel to check the appearance of each package and the battery pack, if there is a problem to notify the quality control personnel on the spot to confirm, if there is no problem can continue unpacking sorting;

5, after the unpacking of the inventory of the number of battery packs, if there is a small phenomenon to notify the quality control of the signature (issued abnormalities), and then to the warehouse feeding;

6. At the time of sorting, sort the appearance of the battery according to the inspection standards of the company, and classify the defective pieces (fragments, chippings, missing corners, color dots, poor printing, etc.) before the end of production. A second judgment is made to confirm that if the company continues to put into production within the company's standards, if it is outside the company's standards, production will be returned to the warehouse according to the original material defect and the original material fragments;

7. Single-weld inspection, single-weld inspection of selected films before welding. If unfavorable films are found in the process of mutual inspection, it shall be confirmed by quality control. The company shall continue to put into production within the company's standards. The parties and quality controllers at the same time signed the name on the back of the battery and the conversion rate of the cell to the sorting replacement. Such films are marked as poor sorting of production;

8, in the single welding process appears bad film, also need quality control to determine the confirmation, the battery has not been welded at the same time the quality of the battery itself (color point, poor printing, perforation, etc.) quality control officer sign on the back of the battery, Replaced by the bad raw materials to the sorting; parties and quality control personnel who have not yet welded the fragments, edge collapses, and missing corners on the battery sheet at the same time signed the name on the back of the battery sheet and the conversion rate of the cell sheet to the sorting replacement. Such films are marked as production. Poor operation; The party and the quality control personnel who have appeared defective wafers that have been soldered at the same time sign the name on the back of the battery and the conversion rate of the cells to the sorting and replacement. Such films are recorded as poor in production operations.