High welding tensile force PERC solar front silver paste and preparation method thereof
CN116913574BActive Publication Date: 2025-02-28YUNNAN PRECIOUS METALS LAB CO LTD +2
Patent Information
- Application Number
- CN202310707629.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-15
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2043-06-15
AI Technical Summary
Technical Problem
The adhesion per unit area of the silver paste on the front of the existing solar cells is low, and the welding alloying rate is unreasonable, resulting in low adhesion and affecting the service life of solar modules.
Method used
The glass powder composed of Bi2O3, B2O3, SiO2, BaO, CaO, GeO2, V2O3 is used to improve the adhesion and welding performance of the silver paste through specific formulas and preparation methods.
Benefits of technology
The adhesion per unit area of silver paste is significantly improved, reaching more than 4N/mm2, improving welding performance, enhancing the conductivity and adhesion of the silver film, and extending the service life of solar modules.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116913574B_ABST
Abstract
The present application discloses a high welding tensile force PERC solar front silver paste and a preparation method thereof. The glass powder used in the silver paste is composed of 40% to 50% Bi2O3, 18% to 25% B2O, 9% to 25% SiO2, 1% to 5% BaO, 5% to 10% CaO, 1% to 3% GeO2, and 5% to 10% V2O3 by weight percentage, and inorganic additives are additionally added to the silver paste. The use of the glass powder and the addition of inorganic additives can improve the degree of silver-tin alloying of soldering, improve the firmness of soldering, and make the adhesion per unit area reach 4N / mm 2 .
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Citation Information
Patent Citations
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