CN207265071U

CN207265071U - A kind of solar photovoltaic assembly

Info

Publication number: CN207265071U
Application number: CN201721056484.7U
Authority: CN
Inventors: 张军; 柯坡; 张发; 陈波; 赵杰
Original assignee: SHANGHAI JA SOLAR PV TECHNOLOGY Co Ltd
Current assignee: SHANGHAI JA SOLAR PV TECHNOLOGY Co Ltd
Priority date: 2017-08-23
Filing date: 2017-08-23
Publication date: 2018-04-20
Anticipated expiration: 2027-08-23

Abstract

The utility model discloses a kind of solar photovoltaic assembly, includes photovoltaic glass, front packaging film, cell piece and integrated backboard successively from top to bottom, and the integration backboard includes the back side packaging film that backboard and integration are arranged on the backboard.The solar photovoltaic assembly is reduced production process, improves production efficiency, reduce production cost, improve component generated output, reduced encapsulating material warehousing pressure using integrated backboard.

Description

A kind of solar photovoltaic assembly

Technical field

The utility model belongs to technical field of solar batteries, and in particular to a kind of solar photovoltaic assembly.

Background technology

With the aggravation of photovoltaic industry competition, the decline of subsidy, it would be highly desirable to which new product component carrys out cost efficiency.

In photovoltaic module, wherein back side encapsulating material such as EVA plays protection packaging after heat cross-linking to cell piece, Cell piece is set to be not easy to be aoxidized and corroded；Its dorsulum plays protection and supporting role to cell piece, have high insulation, high water resistant, Ultraviolet aging resistance and corrosive nature.

Existing photovoltaic module back side envelope material (EVA or POE, PVB) is to separate with backboard, and such a component has following lack Point：

(1) increase photovoltaic module back side envelope material (EVA or POE, PVB) and be laid with process, reduce production efficiency；

(2) one layer of back side envelope material (EVA or POE, PVB) more, increase manufacture cost；

(3) cell piece heat needs to first pass through envelope material (EVA or POE, PVB), then is distributed by backboard, heat radiation energy Power is weak, reduces component generated output；

(4) Normal back plate internal layer thinner thickness, is not susceptible to diffusing reflection, is not easy lifting assembly unit area irradiation, drop Low component generated output；

(5) photovoltaic module back side envelope material (the EVA or POE, PVB) shelf-life is shorter, is usually 6 months, EVA warehousing pressures Greatly.

Utility model content

The purpose of this utility model is to provide a kind of solar photovoltaic assembly, and the solar photovoltaic assembly is using integration Backboard, reduces production process, improves production efficiency, reduces production cost, improves component generated output, reduces envelope Package material warehousing pressure.

The purpose of this utility model is achieved through the following technical solutions：A kind of solar photovoltaic assembly, from upper and Under include photovoltaic glass, front packaging film, cell piece and integrated backboard successively, the integration backboard includes backboard and one Bodyization is arranged on the back side packaging film on the backboard.

Solar photovoltaic assembly in the utility model, reduces the laying of back side packaging film (such as EVA, POE or PVB) Process, after cell piece and isolating bar have been folded, directly covers integrated backboard.

In the solar photovoltaic assembly：

Back side packaging film on the integration backboard is in contact with the cell piece.

The surface that the back side packaging film is in contact with the cell piece is equipped with concaveconvex structure, has preferable diffusing reflection Performance.

Integrated backboard is under the conditions of ensureing that component facade is without exception, its thickness, structure and material are unrestricted, and structure can For application type, compound etc..

But preferably, the thickness of the back side packaging film is preferably 0.4~1mm, the material of the back side packaging film Preferably polyolefin POE, ethylene-vinyl acetate EVA or polyvinyl butyral PVB.

The size of the integration backboard and the size of the photovoltaic glass and the positive encapsulation material film are big It is small to be adapted.It is that packaging film and backboard size are too short in order to prevent that this, which is adapted, and makes photovoltaic module edge starved, delamination etc. Bad order phenomenon.

The principle of the utility model is：The single back side encapsulation material film of photovoltaic module is replaced using integrated backboard (such as EVA, POE or PVB) and single backboard, and use appropriate laminating technology, it is ensured that in the utility model too Phenomena such as positive energy photovoltaic module, component facade requires up to standard after lamination, no delamination, bulge, protrusion, pit.

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

(1) solar photovoltaic assembly in the utility model reduces photovoltaic module back side envelope material (such as EVA, POE or PVB) Laying process, improve production efficiency；

(2) solar photovoltaic assembly in the utility model reduce one layer of back side packaging film (such as EVA, POE or PVB), general components structure, glass+EVA+ cell piece+EVA+ backboards, the utility model integral component structure, glass+EVA+ Cell piece+integration backboard, reduces manufacture cost；

(3) the solar photovoltaic assembly heat in the utility model need not first pass through back side packaging film (such as EVA, POE or PVB), then by backboard distribute, but directly distributed by backboard, general components heat dissipation path：Cell piece-EVA- Backboard, the utility model integral component heat dissipation path：Cell piece-integration backboard, heat-sinking capability is strong, the utility model one It is more conventional thin to change component thickness, for heat transfer apart from short, i.e., heat-sinking capability is strong, can improve component generated output；

(4) thicker (thickness is about 300 to the integrated backboard internal layer thickness of the solar photovoltaic assembly in the utility model μm or so, and Normal back plate, 75 μm or so of internal layer thickness), diffusing reflection easily occurs, so that lifting assembly unit area irradiation, Improve component generated output；

(5) the integrated backboard shelf-life in the utility model solar photovoltaic assembly is longer, is usually 12 months, easily subtracts Few EVA warehousing pressures, make assembly reliability higher.

Brief description of the drawings

Fig. 1 is the structure diagram of the solar photovoltaic assembly in the utility model；

Fig. 2 is the back side encapsulation material film on the integrated backboard in the solar photovoltaic assembly in the present invention；

Fig. 3 is the micro-structure diagram of the concaveconvex structure on the back side packaging film in Fig. 2 circles.

Embodiment

As shown in Figs. 1-3, a kind of solar photovoltaic assembly, includes photovoltaic glass 1, front packaging film successively from top to bottom (such as EVA, POE or PVB) 2, cell piece 3 and integrated backboard 4, integrated backboard 4 includes backboard and integration is arranged on backboard On back side encapsulation material film 5.

Back side packaging film 5 on wherein integrated backboard is in contact with cell piece 3.

The surface that back side packaging film 5 is in contact with cell piece 3 is equipped with concaveconvex structure 6.

The thickness of back side packaging film 5 is 0.4~1mm, and the material of back side packaging film 5 is polyolefin, ethyl vinyl acetate second Enester or polyvinyl butyral etc..

The backboard that the thickness of back side packaging film 5 is more conventional is thick, can be easier to realize certain concaveconvex structure 6 above, Comparatively ideal diffusing reflection performance is made it have, component unit area is received more irradiations, improves component generated output.

The size of integrated backboard 4 is adapted with the size of photovoltaic glass 1 and front packaging film 2.

This, which is adapted, can prevent that envelope material and backboard size are too short, and make the appearances such as photovoltaic module edge starved, delamination not Good phenomenon.

The solar photovoltaic assembly is provided with integral photovoltaic backboard, instead of module backside packaging film (such as EVA, POE or PVB etc.) and backboard, component has been lacked one layer of back side packaging film (such as EVA, POE or PVB), improve manually or mechanically layer Folded efficiency and reduction component manufacture cost, can be very in power generation process since integrated backboard is directly with cell piece rear-face contact Heat is directly distributed by backboard well, heat-sinking capability is good, so that component generated energy is improved, due to integrated backboard Inner membrance is thicker to be better achieved optics diffusing reflection, component unit area is received more irradiations, improve component generated output, Integrated backboard has a longer shelf-life (1 year) at the same time, and conventional back surface packaging film (such as EVA, POE or PVB) (6 Month), so as to reduce back side packaging film (such as EVA, POE or PVB) warehousing pressure, improve assembly reliability.

The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide scope consistent with features of novelty.

Claims

1. a kind of solar photovoltaic assembly, it is characterized in that：Include photovoltaic glass, front packaging film, battery successively from top to bottom Piece and integrated backboard, the integration backboard include the back side packaging film that backboard and integration are arranged on the backboard.

2. solar photovoltaic assembly according to claim 1, it is characterized in that：Back side thinner package on the integration backboard Film is in contact with the cell piece.

3. solar photovoltaic assembly according to claim 1, it is characterized in that：The back side packaging film and the cell piece The surface being in contact is equipped with concaveconvex structure.

4. according to the solar photovoltaic assembly described in claim 1,2 or 3, it is characterized in that：The thickness of the back side packaging film For 0.4~1mm, the material of the back side packaging film is polyolefin or ethylene-vinyl acetate, polyvinyl butyral.

5. solar photovoltaic assembly according to claim 4, it is characterized in that：The size of the integration backboard and institute The size for stating photovoltaic glass and the positive encapsulation material film is adapted.