Photovoltaic module structure

By setting a passivation layer on the sides and edge areas of the cell and cell string of the photovoltaic module, the problem of short circuit or leakage in high-density packaging of the photovoltaic module is solved, the stability of the module and the photoelectric conversion efficiency are improved, and the high-density component arrangement is achieved.

CN119698078APending Publication Date: 2025-03-25SHANGHAI & SOLAR TECH +1
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Patent Information

Application Number
CN202411777740.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

Existing photovoltaic module structures are prone to short circuit or leakage when packaged in high-density packaging, which may cause the component's electrical performance to fail in severe cases.

Method used

A passivation layer, such as an Al2O3 film or a SiO2 film, is provided on the sides and edge areas of the cell and cell string of the photovoltaic module, and an insulating adhesive layer is added to the passivation layer to reduce or avoid short circuits and leakage.

Benefits of technology

By setting up a passivation layer, the current short circuit phenomenon is effectively reduced, the stability and reliability of photovoltaic modules are improved, the recombination rate of the battery is reduced, the photoelectric conversion efficiency is improved, and the high-density photovoltaic module arrangement is achieved.

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Abstract

The invention relates to a photovoltaic module structure which comprises a plurality of battery strings located between a cover plate and a back plate, the battery strings are connected with a plurality of battery pieces in series, first side faces, second side faces, third side faces and fourth side faces of the battery pieces are opposite, and passivation layers are arranged on edge areas of the front faces and the back faces of the battery pieces. The passivation layer effectively reduces or avoids the current short circuit phenomenon, thereby facilitating the reduction of the spacing between the battery pieces and the spacing between the battery strings, improving the space utilization rate of the photovoltaic module, and further achieving the high-density arrangement of the module. And the passivation layer can also reduce or eliminate the phenomenon of electric leakage at the edge of the battery piece, the recombination rate of the battery is reduced, and the filling factor of the battery is improved, so that the photoelectric conversion efficiency of the battery is improved.
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