SOLAR CELL MODULE AND MANUFACTURING METHOD OF SAME

A solar cell module sequentially includes a protecting plate, a cell structure and a supporting structure. A manufacturing method of the solar cell module includes only one step of hot pressing the protecting plate, the cell structure, and the supporting structure together. This manufacturing method saves time and improves efficiency. Moreover, hot pressing does not cause serious deformation of the supporting structure even though the thermal expansion coefficients of materials are different.

FIELD

The subject matter herein generally relates to solar cell modules and manufacturing method of the same.

BACKGROUND

Solar cell modules are designed to absorb the sun's rays for generating electricity or heating.FIG. 1is a side view of a conventional solar cell module100. The solar cell module100sequentially includes a protecting plate101, a cell structure102, a back sheet103, and a supporting structure104. The back sheet103is made of plastic materials. The supporting structure104is made of metal. The protecting plate101, the cell structure102, and the back sheet103are bonded together by hot pressing. The back sheet103and the supporting structure104are bonded together by adhesive.

DETAILED DESCRIPTION

The present disclosure, including the accompanying drawings, is illustrated by way of examples and not by way of limitation. Several definitions that apply throughout this disclosure will now be presented. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.”

FIG. 2shows a solar cell module200of an embodiment of the present disclosure. The solar cell module200sequentially comprises a protecting plate201, a cell structure202, and a supporting structure203. The protecting plate201, the cell structure202, and the supporting structure203are bonded together by hot pressing. The protecting plate201is a silicone plate, which is a plate with light weight and protecting function and can be well used as a protecting plate. Preferably, the protecting plate201is a polymeric organosilicon compound plate such as a polydimethylsiloxane (PDMS) plate. The cell structure202has two ethylene-vinyl acetate (EVA) layers2021and a cell2022between the two EVA layers2021. The EVA layers2021are in the form of sheets.

The protecting plate201has an outward surface and an inward surface. The outward surface can be coated with an ultraviolet (UV)-resistant film to extend the lifetime of the protecting plate201. The inward surface can be coated with a cross linking agent or have microstructures formed thereon to improve the adhesion between the EVA layer2021and the protecting plate201. The microstructures can assist in a vacuum suction procedure.

FIG. 3shows the supporting structure203of the solar cell module200ofFIG. 2. The supporting structure203sequentially has a top plate2031, a top EVA layer2032, a honeycomb core2033, a bottom EVA layer2034, and a bottom plate2035. The top plate2031is a plastic plate. The top and bottom EVA layers2032,2034are in the form of sheets. The honeycomb core2033is made of metal such as aluminum. The bottom plate2035can be a plastic plate, a metal plate, or a plate having an upper layer of metal and a lower layer of plastic.

A manufacturing method of a conventional solar cell module must include two steps, the steps of hot pressing and of adhesion. The two step method is time consuming. Moreover, deformation of a back sheet and of a supporting structure can occur due to different thermal expansion coefficients of the back sheet and of the supporting structure and adhesion between the back sheet and the supporting structure. A manufacturing method of the solar cell module200of the present disclosure comprises only one step of hot pressing together the protecting plate201, the cell structure202, and the supporting structure203. This manufacturing method saves time and improves efficiency. Moreover, hot pressing does not cause serious deformation of the supporting structure203even though the thermal expansion coefficients of materials are different.

FIG. 4shows a supporting structure203A of a solar cell module200A of another embodiment of the present disclosure. The bottom plate2035A of the supporting structure203A is a metal plate or a plate having an upper layer of metal and a lower layer of plastic.FIG. 5is a side view of the solar cell module200A ofFIG. 4. The bottom plate2035A is folded to form a frame.