Double-sided double-glass assembly for back contact solar cell, and manufacturing method of double-sided double-glass assembly

Abstract

The invention discloses a double-sided double-glass assembly for a back contact solar cell, and a manufacturing method of the double-sided double-glass assembly. The manufactured assembly comprises afirst glass layer, a transparent conductive circuit layer, a first packaging material layer, a back contact cell layer, a second packaging material layer, a second glass layer and a junction box, which are sequentially laminated together from bottom to top. A conductive adhesive medium connecting point layer is arranged on the transparent conductive circuit layer; and the transparent conductive circuit layer is a conductive circuit formed on the first glass layer by a nano-silver conductive material. According to the invention, the double-sided power generation of the back contact battery canbe realized, the back light transmittance is high, and the higher double-sided rate can be realized. Meanwhile, the back contact technology and the double-sided power generation technology are superposed, and the transparent conductive thin film is adopted, so that the double-sided assembly achieves a high double-sided rate, welding stress caused by using a welding strip is avoided, hidden crack of the assembly is reduced, and assembly attenuation is small.

Description

technical field [0001] The invention relates to a double-sided double-glass component of a back-contact solar cell and a manufacturing method thereof, belonging to the technical field of solar photovoltaic cell component manufacturing. Background technique [0002] At present, new technologies in the photovoltaic field of solar cells are emerging in an endless stream, and various technologies present different technical advantages. At this time, it is particularly important for different new technologies to overlap each other. Among them, double-sided battery components have unique application advantages. Traditional grid-wire batteries are made of double-sided battery components. It has gradually become the mainstream of the market. Only the back-contact metal winding technology has no main grid on the front and back, so that it is impossible to copy the welding and packaging technology of grid-wire battery components to make double-sided modules, which obviously limits the ...

AI Technical Summary

Problems solved by technology

[0002] At present, new technologies in the photovoltaic field of solar cells are emerging in an endless stream, and various technologies present different technical advantages. At this time, it is particularly important for different new technologies to overlap each other. Among them, double-sided battery components have unique application advantages. Traditional grid-wire batteries are made of double-sided battery components. It has gradually become the mainstream of the market. Only the back-contact metal winding technology has no main grid on the front and back, so that it is impossible to copy the welding and packaging technology of grid-wire battery components to make double-sided modules, which obviously limits the application and development of back-contact technology. develop

[0003] The mainstream double-sided modules in the existing market are all based on H-type welding packaging technology, using front and rear grid structure cells. This technology has a large front shading area and welding stress, which makes the module power low, prone to cracks, and large attenuation For thin and fragile double-sided batteries, the use of H-type welding technology will inevitably lead to cracks, low yield, and weak reliability.

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