CN209747529U

CN209747529U - Back contact type efficient double-glass assembly and solar cell panel

Info

Publication number: CN209747529U
Application number: CN201920253890.5U
Authority: CN
Inventors: 张彩霞; 吴仕梁; 路忠林; 张凤鸣
Original assignee: Jiangsu Sunport Power Corp Ltd
Current assignee: Jiangsu Sunport Power Corp Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-06
Anticipated expiration: 2029-02-28

Abstract

The utility model discloses a back contact type efficient double-glass assembly and a solar cell panel, wherein the double-glass assembly comprises a layer body made of different materials which are laminated in sequence, the double-glass assembly comprises a first packaging material layer and a second packaging material layer, a back contact battery layer is arranged between the first packaging material layer and the second packaging material layer, and an intermediate layer formed by conductive circuits, insulating materials and conductive adhesives is arranged between the back contact battery layer and the first packaging material layer; the first packaging material layer is made of a wavelength conversion EVA material, the double-glass assembly is of an upper and lower double-glass structure, the first packaging material layer is provided with a flat float tempered glass layer, and the second packaging material layer is provided with a high-light-transmission embossed tempered glass layer. The panel adopts a plurality of above-mentioned dual glass assembly to constitute, not only can provide the battery light absorption, obtains higher power, and the partial conversion of ultraviolet band makes the packaging material in battery clearance reduce the ultraviolet injury simultaneously, has improved the subassembly reliability.

Description

Back contact type efficient double-glass assembly and solar cell panel

Technical Field

The utility model relates to a back of body contact double-glass solar cell photovoltaic module also belongs to solar cell photovoltaic field.

Background

At present, new technologies in the photovoltaic field of solar cells are endless, various technologies present different technical advantages, at this moment, the mutual superposition of different new technologies is important, the dual-glass packaging technology has become mature day by day in the photovoltaic industry, the superposition of new technologies taking dual-glass as a theme also continuously emerges, a strong hand has been brought to the market with stronger technical advantages, the dual-glass reliability is considered to have better advantages traditionally, the power is slightly weaker than that of a conventional component, along with the development of the industry, the requirement of a customer on a product is higher and higher, the power of the dual-glass also has to keep up with the development of the industry technology, and therefore, the high-power dual-glass component is generated according to the development requirement of the industry.

SUMMERY OF THE UTILITY MODEL

For solving the drawback that prior art scheme exists, the utility model discloses the intention is creating a new technical solution, and back of the body contact high-efficient dual glass assembly promptly has higher power than mainstream welding formula dual glass assembly, better quality, advantage such as more pleasing to the eye, integrated ordinary MWT dual glass assembly high reliability again.

The technical scheme is as follows:

In order to solve the problems, the utility model provides a back contact type efficient dual-glass assembly, which comprises a layer body made of different materials and formed by laminating in sequence, wherein the layer body comprises a first packaging material layer and a second packaging material layer, a back contact battery layer is arranged between the first packaging material layer and the second packaging material layer, and an intermediate layer formed by a conductive circuit, an insulating material and a conductive adhesive is arranged between the back contact battery layer and the first packaging material layer; the first packaging material layer is made of a wavelength conversion EVA material, the double-glass assembly is of an upper and lower double-glass structure, the first packaging material layer is provided with a flat float tempered glass layer, and the second packaging material layer is provided with a high-light-transmission embossed tempered glass layer.

Further, the middle layer comprises a conductive circuit layer, an insulating material layer and conductive adhesive which are sequentially laminated together; wherein the insulating material is a white insulating isolation material.

Preferably, the back contact cell layer is a high-efficiency perc back contact type single crystal cell or a black silicon polycrystalline cell.

Preferably, the flat float tempered glass layer is coated with a white surface film layer.

The utility model discloses still disclose a solar cell panel that adopts the high-efficient dual glass assembly of above-mentioned back of body contact to constitute, a plurality of dual glass assembly of even installation on the panel, link to each other the conducting wire layer through welding the area between the dual glass assembly, whole dual glass assembly passes through on the silica gel bonding terminal box.

Preferably, the battery plate comprises 60 or 72 serial double-glass assemblies.

Compared with the prior art, the utility model has the advantages that:

1. The utility model discloses wavelength conversion EVA's use not only can provide battery light absorption, obtains higher power, and the partial conversion of ultraviolet band makes the packaging material in battery clearance reduce the ultraviolet injury simultaneously, has improved the subassembly reliability.

2. The utility model discloses white glass's in back use traditional industry white EVA reliability is high, and the coating film of physical method is more firm.

3. The utility model discloses the subassembly power of making is high, but the reduction system degree cost of electricity has great significance to promoting the flat price of photovoltaic trade and surfing the net.

4. The utility model discloses the power that photovoltaic module made than mainstream welded transparent dual glass assembly exceeds 10-15W, has better quality simultaneously, advantages such as more beautiful outward appearance.

Detailed Description

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

In the figure, 1, a flat float tempered glass layer, 2, a first packaging material layer, 3, a conducting circuit layer, 4, an insulating material layer, 5, conducting glue, 6, a back contact battery sheet layer, 7, a second packaging material layer and 8, a high-light-transmission embossed tempered glass layer.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

The utility model provides a back contact type efficient dual-glass assembly, which comprises a layer body made of different materials, wherein the layer body is formed by laminating the layers in sequence and comprises a first packaging material layer and a second packaging material layer, a back contact battery layer is arranged between the first packaging material layer and the second packaging material layer, and an intermediate layer formed by conductive circuits, insulating materials and conductive adhesives is arranged between the back contact battery layer and the first packaging material layer; the first packaging material layer is made of a wavelength conversion EVA material, the double-glass assembly is of an upper and lower double-glass structure, the first packaging material layer is provided with a flat float tempered glass layer, and the second packaging material layer is provided with a high-light-transmission embossed tempered glass layer.

Example 1

The middle layer comprises a conductive circuit layer, an insulating material layer and conductive adhesive which are sequentially laminated together; wherein the insulating material is a white insulating isolation material.

The utility model discloses a dull and stereotyped float process toughened glass layer, first packaging material layer, conducting wire layer, insulating material layer, conducting resin, back of the body contact battery lamella, second packaging material layer, high printing opacity knurling toughened glass layer. The back contact cell sheets in this example are MWT back contact high efficiency perc single crystal cells and black silicon multicrystalline cells.

In this embodiment, the second encapsulant is a wavelength conversion EVA adhesive film material, the transmittance of the adhesive film is 92%, and the adhesive film has a wavelength conversion function, so that the sunlight conversion at a wavelength of 320-.

The white EPE insulating layer material is adopted, the PET material is arranged in the middle, the white PE film or the white coating is arranged on the surface, the white EPE insulating layer material enables the gaps of the photovoltaic module battery pieces to have more reflected light, the light absorption of the battery is increased, and therefore the power of the module is improved. The insulating material isolating layer is used for insulating and isolating the back of the battery from the conductive core board, and the conductive core board is used for connecting the battery pieces in series, so that the anode and the cathode of each battery are not short-circuited.

The whole structure is double-glass packaging, the front surface adopts coated low-iron ultra-white embossed toughened or semi-toughened glass, and the light transmittance is more than or equal to 94 percent. The back surface of the glass is made of white float plate tempered or semi-tempered glass, the surface of the glass is coated with a film layer on the basis of common transparent plate glass, titanium dioxide is doped into body fluid of the film layer, and the glass presents a white surface after being coated on the surface of the glass, so that the light splitting reflectivity of the peripheral edge part of the component can be improved, and the power of the component is increased.

Example 2

The utility model discloses during the realization, scribble the float process toughened glass layer (1 in the picture) level of white surface film layer with first layer and place, place first layer packaging material wavelength conversion EVA (2 in the picture), place electrically conductive core (3 in the picture) again, scribble conducting resin (5 in the picture) again, cover white insulating barrier material (4 in the picture), place high-efficient perc back contact formula single crystal cell piece (6 in the picture) again, the battery piece can not contact each other, laying second floor packaging material (7 in the picture), place second floor high printing opacity knurling toughened glass layer (8 in the picture) at last, after the lamination, link to each other electrically conductive core with the solder strip, use the silica gel to connect the terminal box, because the terminal box is not the utility model discloses the key of protection, consequently do not mark in the picture.

In the embodiment, the battery back electrode is connected with the specially-made conductive circuit core board by using the conductive adhesive, and the adjacent battery pieces are connected in series by the conductive circuit core board to form a battery string of 60 or 72 batteries.

The utility model discloses a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, do not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as with moist decorations the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. a back contact type efficient double-glass assembly is characterized by comprising a first packaging material layer and a second packaging material layer, wherein the first packaging material layer and the second packaging material layer are sequentially laminated, a back contact battery layer is arranged between the first packaging material layer and the second packaging material layer, and an intermediate layer formed by a conductive circuit, an insulating material and conductive adhesive is arranged between the back contact battery layer and the first packaging material layer;

The first packaging material layer is made of a wavelength conversion EVA material, the double-glass assembly is of an upper and lower double-glass structure, the first packaging material layer is provided with a flat float tempered glass layer, and the second packaging material layer is provided with a high-light-transmission embossed tempered glass layer.

2. The back-contact high efficiency dual glass assembly according to claim 1, wherein the intermediate layer comprises a conductive circuit layer, an insulating material layer, and a conductive adhesive laminated in sequence; wherein the insulating material is a white insulating isolation material.

3. The back-contact high-efficiency dual glass assembly according to claim 1, wherein the back-contact battery layer is a high-efficiency perc back-contact single crystal battery piece or a black silicon polycrystalline battery.

4. The back-contact high efficiency dual glass assembly according to any one of claims 1 to 3, wherein a white surface film layer is coated on the flat float tempered glass layer.

5. The solar cell panel is characterized in that a plurality of double-glass assemblies are uniformly arranged on the cell panel, the double-glass assemblies are connected with each other through a welding belt to form a conducting circuit layer, and the whole double-glass assembly is bonded on a junction box through silica gel.

6. Solar panel as claimed in claim 5, characterised in that it comprises 60 or 72 double glass assemblies in series.