High-efficiency multi-main-grid half-piece double-sided photovoltaic module

Abstract

The invention discloses a high-efficiency multi-main-grid half-piece double-sided photovoltaic module, which comprises an aluminum frame, which comprises the components from top to bottom in sequence:anti-reflection coated glass, a front hot melt adhesive film, battery pieces, a back hot melt adhesive film and a transparent back plate; the aluminum frame sleeves the outer side surface of the photovoltaic module; the battery pieces are connected through ultra-soft welding strips to form a seamless welding battery string, and longitudinal reflective films are arranged in gaps of the battery string; a plurality of open holes are formed in the longitudinal middle of the transparent back plate; confluence strips are connected with the ultra-soft solder strips connected with the battery piecesto enable the battery pieces to form a complete circuit loop; and meanwhile, the confluence strips are led out of the open holes of the transparent back plate to be connected with a junction box. According to the invention, the blank between components can be reduced, the light absorption area is increased, and the packaging density is improved, so that the photoelectric conversion efficiency is improved, the material cost is reduced, and the power and reliability of the component are improved; the angle of the aluminum frame can be adjusted, so that the light absorption efficiency is improved; and the collision of the aluminum frame can be buffered and protected.

Description

technical field [0001] The invention relates to the technical field of photovoltaic modules, in particular to a high-efficiency multi-busbar half-chip double-sided photovoltaic module. Background technique [0002] With the emergence of the "Top-Runner" and "Super-Top-Runner" programs, my country's photovoltaic industry has entered an active period of technological innovation. The conversion efficiency and production cost of photovoltaic modules have always been two major issues restricting the development of the photovoltaic industry. Therefore, the development of high-efficiency and high-reliability modules is an eternal theme of photovoltaic development. [0003] Photovoltaic modules are usually mainly composed of front cover plate, cell array, encapsulation film, back cover plate, frame, etc. During the formation of battery strings, the cells need to undergo instant cooling when they are interconnected and welded, and the rapid temperature change will cause the cells to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there is a large blank area in the area of ​​conventional photovoltaic modules in the prior art and reduce the light absorption area, and proposes a high-efficiency multi-busbar half-chip double-sided photovoltaic module

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