CN204834650U

CN204834650U - Photovoltaic assembly

Info

Publication number: CN204834650U
Application number: CN201520668343.5U
Authority: CN
Inventors: 刘亚锋; 胡国波; 金浩
Original assignee: Zhejiang Jinko Solar Co Ltd; Jinko Solar Co Ltd
Current assignee: Zhejiang Jinko Solar Co Ltd; Jinko Solar Co Ltd
Priority date: 2015-08-31
Filing date: 2015-08-31
Publication date: 2015-12-02
Anticipated expiration: 2025-08-31

Abstract

The utility model discloses a photovoltaic assembly, the glass cover plate, a OCA layer and the battery piece that stack in proper order including from the top down, glass cover plate with the battery piece passes through a OCA layer glass ization bonding. Photovoltaic assembly encapsulates the glued membrane through borrowed light solidification encapsulating material OCA, can carry out UV light under the lower temperature solidifies, the crystal silicon battery piece of more favourable protection packaging, required curing time is shorter, can effective lift assembly production productivity, and can not produce the yellow stain, reduce the power consumption in the subassembly production process from this, promote the total generated energy of photovoltaic power plant, further reduce photovoltaic power plant's cost, and more has high permeability than EVA, the high power of adhereing, the low rate of permeating water, and long -term use can not produce the yellow stain, peel off and change and ageing scheduling problem, can further reduce photovoltaic assembly manufacturing cost, the lift assembly generated energy, further reduce photovoltaic power plant's cost.

Description

A kind of photovoltaic module

Technical field

The utility model relates to photovoltaic module and manufactures field, particularly relates to a kind of photovoltaic module.

Background technology

Solar cell is owing to having the advantages such as abundant raw material, pollution-free, noiselessness, structure are simple, easily manufactured, reliability is high, the life-span is long, and using the sun as the energy, inexhaustible, during the life being widely used in the mankind is produced.

Utilize photovoltaic effect by light energy conversion for electric energy is the general principle of solar cell, the solar cell through series connection is protected by cover plate, backboard and glued membrane, finally adopts the encapsulation of aluminium frame and silica gel sealing to form large area photovoltaic module.

Existing photovoltaic module adopts EVA adhesive film to encapsulate substantially, and it is a kind of ethene-vinyl acetate material, and inner also have various cross-linking ion and anti-aging ion.Carry out vacuumizing at usual needs 145 DEG C and high-pressure curing.But under high temperature curing conditions, the curing time of EVA is long, and owing to easily producing bubble under high temperature, so need accurately to control to the laminating temperature of EVA, and temperature is higher, and during lamination, required power consumption is higher.In addition in the long-term power generation process of photovoltaic module, due to the change of EVA internal structure, EVA easily produces xanthochromia, peels off change and problem of aging in addition, affects its light transmittance, reduces the generating efficiency of photovoltaic module.

Utility model content

The purpose of this utility model is to provide a kind of photovoltaic module, can be cured at low temperatures, and can not produce xanthochromia, reduces the power consumption in module production process thus, promotes the energy output that photovoltaic plant is total, reduce the cost of photovoltaic plant further.

For solving the problems of the technologies described above, the utility model embodiment provides a kind of photovoltaic module, comprises the cover-plate glass, OCA layer and the cell piece that stack successively from top to bottom, and described cover-plate glass and described cell piece are by a described OCA layer vitrified bond.

Preferably, the 2nd OCA layer be arranged under described cell piece is also comprised.

Preferably, also comprise the backboard be arranged under described 2nd OCA layer, described cell piece and described backboard are by described 2nd OCA layer bonding.

Preferably, also comprise the base plate glass be arranged under described 2nd OCA plate, described cell piece and described base plate glass are by described 2nd OCA layer bonding.

Preferably, described cell piece is double-side cell sheet.

The photovoltaic module that the utility model embodiment provides, compared with prior art, has the following advantages:

The photovoltaic module that the utility model embodiment provides, comprises the cover-plate glass, OCA layer and the cell piece that stack successively from top to bottom, and described cover-plate glass and described cell piece are by a described OCA layer vitrified bond.

Described photovoltaic module carries out packaging adhesive film by adopting photocuring encapsulating material OCA, UV light can be carried out at a lower temperature to be cured, the crystal-silicon battery slice of more favourable protection packaging, required curing time is shorter, can effective lifting subassembly production production capacity, and can not xanthochromia be produced, reduce the power consumption in module production process thus, promote the energy output that photovoltaic plant is total, the cost of further reduction photovoltaic plant, and have more high permeability than EVA, high adhesion, low permeability rate, and Long-Time Service can not produce xanthochromia, peel off change and the problem such as aging, photovoltaic module production cost can be reduced further, lifting subassembly energy output, the cost of further reduction photovoltaic plant.

In sum, the photovoltaic module that the utility model embodiment provides, adopts OCA to carry out packaging adhesive film, can be cured at low temperatures, and can not xanthochromia be produced, reduce the power consumption in module production process thus, promote the energy output that photovoltaic plant is total, reduce the cost of photovoltaic plant further.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

The structural representation of the photovoltaic module that Fig. 1 provides for the utility model embodiment.

Embodiment

Just as described in the background section, existing photovoltaic module adopts EVA adhesive film to encapsulate substantially, carry out vacuumizing at usual needs 145 DEG C and high-pressure curing, and under high temperature curing conditions, the curing time of EVA is long, and owing to easily producing bubble under high temperature, so need accurately to control to the laminating temperature of EVA, and temperature is higher, during lamination, required power consumption is higher.In addition in the long-term power generation process of photovoltaic module, due to the change of EVA internal structure, EVA easily produces xanthochromia, peels off change and problem of aging in addition, affect its light transmittance, mostly the generating efficiency vibration absorber reducing photovoltaic module is mechanicalness device, and cost is high, and efficiency is low, manufacturing process.

OCA (OpticallyClearAdhesive) is the extraordinary adhesive for cementing transparent optical element (as camera lens etc.), have water white transparency, light transmission rate more than 90%, cementing strength is good, can solidify under room temperature or middle temperature, and have the features such as cure shrinkage is little.

Based on this, the photovoltaic module that the utility model embodiment provides, comprises the cover-plate glass, OCA layer and the cell piece that stack successively from top to bottom, and described cover-plate glass and described cell piece are by a described OCA layer vitrified bond.

In sum, described photovoltaic module carries out packaging adhesive film by adopting photocuring encapsulating material OCA, UV light can be carried out at a lower temperature to be cured, lamination problem and the EVA yellowing problems of existing assembly can be solved, the crystal-silicon battery slice of more favourable protection packaging, required curing time is shorter, can effective lifting subassembly production production capacity, and can not xanthochromia be produced, reduce the power consumption in module production process thus, promote the energy output that photovoltaic plant is total, the cost of further reduction photovoltaic plant, and have more high permeability than EVA, high adhesion, low permeability rate, and Long-Time Service can not produce xanthochromia, peel off change and the problem such as aging, photovoltaic module production cost can be reduced further, lifting subassembly energy output, the cost of further reduction photovoltaic plant.

For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.

Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here to implement with multiple, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension.Therefore the utility model is not by the restriction of following public concrete enforcement.

Please refer to Fig. 1, the structural representation of photovoltaic module of Fig. 1 for providing by new embodiment.

In a kind of embodiment, described photovoltaic module, comprises the cover-plate glass 1, an OCA layer 2 and the cell piece 3 that stack successively from top to bottom, and described cover-plate glass 1 and described cell piece 3 are by described OCA layer 2 vitrified bond.

Because OCA has water white transparency, light transmission rate is more than 90%, cementing strength is good, can solidify under room temperature or middle temperature, and have the features such as cure shrinkage is little, photovoltaic module in the utility model embodiment adopts OCA layer to replace the EVA layer of conventional photovoltaic assembly, UV light can be carried out at a lower temperature to be cured, the crystal-silicon battery slice 3 of more favourable protection packaging, required curing time is shorter, can effective lifting subassembly production production capacity, and can not xanthochromia be produced, reduce the power consumption in module production process thus, promote the energy output that photovoltaic plant is total, the cost of further reduction photovoltaic plant, and have more high permeability than EVA, high adhesion, low permeability rate, and Long-Time Service can not produce xanthochromia, peel off change and the problem such as aging, photovoltaic module production cost can be reduced further, lifting subassembly energy output, the cost of further reduction photovoltaic plant.

And for traditional photovoltaic module, generally there are five layers.If single glass photovoltaic module, be namely followed successively by cover-plate glass 1, an EVA layer, cell piece 3, the 2nd EVA layer and backboard 5 from top to bottom.An EVA layer wherein can be replaced with OCA layer, also just OCA layer can be replaced with by the 2nd EVA layer, also a described EVA layer can be replaced with an OCA layer 2 simultaneously, described 2nd EVA layer is replaced with the 2nd OCA layer 4, and described cell piece 3 and described backboard 5 are by described 2nd OCA layer 4 vitrified bond

Same for two glass photovoltaic module, be followed successively by cover-plate glass 1, an EVA layer, cell piece 3, the 2nd EVA layer and base plate glass from top to bottom.Also can be still that an EVA layer wherein and any one deck of the 2nd EVA layer are replaced with OCA layer, an EVA layer wherein and the 2nd EVA layer all can be replaced with OCA layer too, described cell piece 3 and described base plate glass are by described 2nd OCA layer 4 vitrified bond.

And for described cell piece 3, described cell piece 3 can be one side cell piece, described cell piece 3 also can be double-side cell sheet.Double-side cell sheet is all spread by the front and back at silicon chip, the light conversion efficiency of solar battery sheet 3 is promoted further, when at right angle setting, double-side cell sheet due to the generating efficiency on two sides consistent, energy output is not by the restriction of installation direction, therefore seldom or cell piece 3 and the angle problem of sunlight need not be considered, cell piece 3 pairs of sunlights need not be rotated and continue to follow the tracks of, be conducive to improving energy output.

Owing to using OCA as the photovoltaic module of encapsulant, bubble in lamination process can be avoided to produce, consume energy lower, the finished product yield of photovoltaic module can be promoted further, reduce assembly production cost.Comprehensively promote the total energy output of photovoltaic plant thus, reduce the cost of photovoltaic plant further.

Because described photovoltaic module adopts OCA as encapsulant, use UV to be cured, lamination problem and the EVA xanthochromia problem of existing crystal silicon component can be solved.

In sum, described photovoltaic module carries out packaging adhesive film by adopting photocuring encapsulating material OCA, UV light can be carried out at a lower temperature to be cured, lamination problem and the EVA xanthochromia problem of existing crystal silicon component can be solved, the crystal-silicon battery slice of more favourable protection packaging, required curing time is shorter, can effective lifting subassembly production production capacity, and can not xanthochromia be produced, reduce the power consumption in module production process thus, promote the energy output that photovoltaic plant is total, the cost of further reduction photovoltaic plant, and have more high permeability than EVA, high adhesion, low permeability rate, and Long-Time Service can not produce xanthochromia, peel off change and the problem such as aging, photovoltaic module production cost can be reduced further, lifting subassembly energy output, the cost of further reduction photovoltaic plant.

Above photovoltaic module provided by the utility model is described in detail.Apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection range of the utility model claim.

Claims

1. a photovoltaic module, is characterized in that, comprises the cover-plate glass, OCA layer and the cell piece that stack successively from top to bottom, and described cover-plate glass and described cell piece are by a described OCA layer vitrified bond.

2. photovoltaic module as claimed in claim 1, is characterized in that, also comprises the 2nd OCA layer be arranged under described cell piece.

3. photovoltaic module as claimed in claim 2, is characterized in that, also comprise the backboard be arranged under described 2nd OCA layer, described cell piece and described backboard are by described 2nd OCA layer vitrified bond.

4. photovoltaic module as claimed in claim 2, is characterized in that, also comprise the base plate glass be arranged under described 2nd OCA plate, described cell piece and described base plate glass are by described 2nd OCA layer vitrified bond.

5. the photovoltaic module as described in claim 1-4 any one, is characterized in that, described cell piece is double-side cell sheet.