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Solar module for double-curved-surface vehicle roof and preparation method thereof

A solar cell stack, hyperboloid technology, applied in the direction of final product manufacturing, renewable energy integration, sustainable manufacturing/processing, etc., can solve the problem of reducing the reliability and safety of solar cells, affecting the visual effect of the roof appearance, air bubbles, etc. problem, to prevent hot spot effect, reduce battery rupture, reduce stress effect

Inactive Publication Date: 2017-08-18
NINGBO SANDI SOLARTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this problem is serious, it will easily cause air bubbles or hollowing, which not only affects the appearance and visual effect of the roof, but also reduces the reliability and safety of solar cells due to the existence of local large stress.

Method used

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  • Solar module for double-curved-surface vehicle roof and preparation method thereof
  • Solar module for double-curved-surface vehicle roof and preparation method thereof
  • Solar module for double-curved-surface vehicle roof and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0074] The present invention also provides a method for preparing a solar module for a hyperboloid roof, referring to Figure 17 , which includes the following steps:

[0075] S1. Make the upper encapsulation layer and the lower encapsulation layer according to the shape of the hyperboloid roof, so that the upper encapsulation layer and the lower encapsulation layer have a curved surface adapted to the shape of the hyperboloid roof, and the curved surface is along a hyperboloid curved in a first direction and a second direction;

[0076] S2. Divide thin-film solar panels or crystalline silicon solar cells into several smaller sub-cells by laser cutting according to the shape and size of the hyperboloid roof;

[0077] S3. Arranging the sub-batteries along the first direction into several sub-battery strings, the number of sub-batteries in the sub-battery strings is ≥ 1;

[0078] S4. Lay the plurality of sub-battery strings in parallel along the second direction, and connect t...

Embodiment 1

[0084] refer to Figure 1 to Figure 3 shown. image 3 is a schematic plan view of the arrangement of solar battery packs 130 along the hyperboloid roof, figure 1 is a cross-sectional view of the solar cell group 130 along a first direction, figure 2 is a cross-sectional view of the solar cell group 130 along the second direction. The solar cell group 130 is encapsulated between the upper encapsulation layer 110 and the lower encapsulation layer 140 by the adhesive film layer 120 . The solar battery pack 130 includes a sub-battery 131 , positive and negative lead wires 132 , a bus strip 133 and a junction box 134 .

[0085] In a preferred embodiment of the present invention, the upper encapsulation layer 110 is made of ultra-clear high-transparency semi-tempered glass with a thickness of 2.1 mm, and the visible light transmittance is above 90%, and the lower encapsulation layer 140 is made of glass with a thickness of 2.1 mm. Common semi-tempered glass has visible light tr...

Embodiment 2

[0101] The difference between the embodiment of the present invention and embodiment 1 is that in order to meet the lighting requirements of the glass roof, such as Figure 4 As shown, the embodiment of the present invention uses narrower thin-film sub-cell strips to widen the distance between the sub-cells 231 in the solar cell group 230. The area is a high transmittance area, and the high and low transmittance intervals are followed to achieve the effect of light transmission. In a preferred embodiment of the present invention, the width of the sub-battery 231 is preferably 35 mm, and the distance between the sub-batteries is preferably 9 mm, forming alternating light-transmitting regions in sequence. The above-mentioned structure can provide about 60W of power, and It can meet the requirement of 30% visible light transmittance.

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Abstract

The invention relates to a solar module for double-curved-surface vehicle roof and a preparation method thereof. The solar module comprises an upper packaging layer, an adhesive film layer, a solar cell set and a lower packaging layer. The upper packaging layer and the lower packaging layer are set to curved surfaces which are adapted with the shape of the double-curved-surface vehicle roof. The curved surfaces are composed of double curved surfaces which are bent in a first direction and a second direction. The solar cell set comprises a plurality of sub-cell strings. The number of the sub-cells in the sub-cell string is larger than or equal with one. The sub-cells are obtained through dividing a thin-film solar cell panel or a crystalline silicon solar cell plate. The sub-cells are arranged in the first direction for obtaining the sub-cell strings. The sub-cell strings are parallelly laid in the second direction. The sub-cell strings are connected in at least one manner selected from parallel connection, serial connection and combination of parallel combination and serial connection. The solar module and the preparation method thereof have advantages of reducing a problem of cell damage in a combination process of the double-curved-surface vehicle roof and furthermore improve reliability of the solar cells.

Description

technical field [0001] The invention relates to the field of solar photovoltaic application products, in particular to a solar module used for a hyperboloid roof and a preparation method thereof. Background technique [0002] Arrange the solar battery pack on the roof of the car, as long as the sun shines on it, it can provide a steady stream of electric energy to the motor vehicle, which can not only help the car reduce the consumption of gasoline, diesel, natural gas, reduce carbon dioxide emissions, and improve air quality, but also The cruising range of the rechargeable electric vehicle can be extended, and the convenience and flexibility of using the electric vehicle can be improved. [0003] For passenger motor vehicles, considering the beauty of the body and the requirements of drag coefficient, the roof is usually not a plane, but a complex hyperboloid, that is, there is a certain arc in the first direction and the second direction perpendicular to each other. The s...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/05H01L31/18H01L31/0445
CPCH01L31/0445H01L31/048H01L31/0512H01L31/188Y02B10/10Y02E10/50Y02P70/50
Inventor 汪浩蒋前哨杨立友潘胜浆
Owner NINGBO SANDI SOLARTECH CO LTD
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