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Power gain type black photovoltaic backboard

A photovoltaic backplane, gain-type technology, applied in the field of solar cells, can solve the problems of power increase and difficulty, and achieve the effect of increasing the utilization rate, improving the reflection function, and increasing the heat dissipation effect.

Pending Publication Date: 2022-05-27
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2% gap area For the current high-efficiency batteries, if the light can be fully utilized, there will be more than 2% power increase
[0006] CN208655667U has reported a kind of high heat dissipation type solar photovoltaic backboard, but has adopted inner layer white reflection layer and outer layer black heat dissipation layer structure design, is difficult to be used in BIPV
However, there is no relevant report on the comprehensive consideration of appearance, light utilization, and heat dissipation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A power-gaining black photovoltaic backplane is composed of a grid-shaped black layer, an inner coating, a support layer and an outer layer in turn from the inside to the outside. The black layer is located in the cell gap.

[0031] Wherein, the black layer has a thickness of 2-60 µm, and is composed of 70% of resin A, 5% of filler A, 24% of filler B, 0.5% by weight of curing agent A, and 0.5% of auxiliary agent.

[0032] The resin A is selected from acrylic resins.

[0033] The filler A is selected from iron-chromium black with an average particle size of 0.05-20 μm.

[0034] The filler B is selected from glass microbeads with an average particle size of 0.1-100 μm.

[0035] The curing agent A consists of a hexamethylene diisocyanate trimer with a mass fraction of 70% and a diazepine compound with a mass fraction of 30%.

[0036] The inner coating has a thickness of 2-30 µm, and is composed of 95% of resin A, 1% of filler C, 3% of curing agent B, and 1% of auxiliary...

Embodiment 2

[0047] A power-gaining black photovoltaic backplane is composed of a grid-shaped black layer, an inner coating, a supporting layer and an outer layer in turn from the inside to the outside. The grid-like black layer is located in the cell gap.

[0048] Wherein, the grid-like black layer has a thickness of 2-60 µm, and is composed of 60% resin A, 5.5% filler A, 22% filler B, 12wt% curing agent A, and 0.5% auxiliary agent. .

[0049] The resin A is selected from epoxy resins.

[0050] The filler A is selected from copper-chromium black with an average particle size of 0.05-20 μm.

[0051] The filler B is selected from ceramic microbeads with an average particle size of 0.1-100 μm.

[0052] The curing agent A consists of a hexamethylene diisocyanate trimer with a mass fraction of 80% and a fused-ring aromatic amine compound with a mass fraction of 20%.

[0053] The inner coating has a thickness of 2-30 µm, and is composed of 80% resin A, 10% filler C, 9wt% curing agent B, and...

Embodiment 3

[0064] A power-gaining black photovoltaic backplane is composed of a grid-shaped black layer, an inner coating, a supporting layer and an outer layer in turn from the inside to the outside. The grid-like black layer is located in the cell gap.

[0065] Wherein, the thickness of the grid-like black layer is 2-60 µm, and is composed of 90% resin A, 4% filler A, 5% filler B, 0.5% curing agent A, and 0.5% auxiliary agent.

[0066] The resin A is selected from fluorocarbon resin chlorotrifluoroethylene-vinyl ether.

[0067] The filler A is selected from perovskite manganese black with an average particle size of 0.05-20 μm.

[0068] The filler B is selected from ceramic microbeads and pearlescent powders with an average particle size of 0.1-100 μm.

[0069] The curing agent A consists of isophorone diisocyanate trimer with a mass fraction of 75% and an azabenzene compound with a mass fraction of 25%.

[0070] The inner coating has a thickness of 2-30 µm, and is composed of 71% r...

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Abstract

The invention belongs to the technical field of solar cells, and particularly relates to a power gain type black photovoltaic backboard which comprises a black layer, an inner coating, a supporting layer and an outer layer which are sequentially arranged from inside to outside, and the position of the black layer corresponds to gaps of photovoltaic module cells; the supporting layer contains a filler, and the filler comprises 75-95% of one or more of spherical aluminum oxide, silica powder, aluminum nitride, boron nitride, zinc oxide and magnesium oxide with the average particle size of 0.01-20 m and 5-25% of rutile titanium dioxide with the average particle size of 0.2-0.8 m. The photovoltaic backboard provided by the invention meets the color matching problem of a packaging material and a battery piece in BIPV application, achieves an attractive effect, also has a power gain effect, and has long-term stable weather resistance.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a power gain type black photovoltaic backplane. Background technique [0002] In recent years, the development and innovation of photovoltaic industry chain technology has become faster and faster, and new types of cells have continuously developed towards high-efficiency. High-efficiency cells such as PERC, Topcon, HJT, double-sided power generation cells, and multi-busbars have appeared. The application scenarios are constantly expanding from The initial ground power station has developed into a BIPV distributed power station, and the cost of electricity is getting lower and lower, and it is only one step away from the grid parity. [0003] In terms of application scenarios, after years of development, there are fewer and fewer ground-based power stations available, while industrial and commercial roofs, civil roofs, curtain walls, and color steel plate factory ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/20B32B27/28B32B27/36B32B33/00H01L31/048H01L31/049H01L31/052H01L31/056
CPCB32B27/08B32B27/36B32B27/285B32B27/20B32B33/00H01L31/049H01L31/0481H01L31/056H01L31/052B32B2307/41B32B2457/12B32B2307/302Y02E10/50
Inventor 林维红江昊李楠楠王林周光大
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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