CN105576050A - Flexible solar cell module and preparation method thereof - Google Patents

Abstract

A flexible solar cell module and a preparation method thereof, wherein a layer of 2# encapsulation material is provided on the flexible backplane, and a layer of batteries formed by splicing teeth-shaped battery sheets with graphene materials on the surface is provided on the 2# encapsulation material The plate layer and the splicing joints of the toothed battery pieces are pasted and fixed with transparent high-temperature tape. The battery plate layer is provided with a layer of 1# packaging material, and the 1# packaging material is provided with a flexible front plate. This design does not require the use of bus bars that block surface light and does not require welding processes, and can also achieve maximum area utilization of the components, thereby improving the overall light conversion efficiency of the components.

Description

A kind of flexible solar cell module and preparation method thereof

technical field

The invention relates to a flexible solar battery module and a preparation method thereof.

Background technique

Flexible solar cell modules generally use metal bus bars to connect the cells in the module in series. Since the metal bus bars are generally made of opaque materials, this design will definitely cause the metal bus bars to block the sunlight shining on the cells, thus Affects the overall light conversion efficiency of the module.

Contents of the invention

The purpose of the present invention is to provide a flexible solar cell module and its preparation method, which does not require the use of bus bars for shielding the surface and does not require welding processes, and can also achieve the maximum area utilization of the module, thereby improving the overall light conversion of the module efficiency.

The technical solutions adopted to achieve the above objectives,

A flexible solar cell assembly, comprising a flexible backboard, a battery plate layer, and a flexible front plate, the flexible backplane is provided with a layer of 2# packaging material, and a layer of graphene material is attached to the surface of the 2# packaging material The battery plate layer formed by splicing toothed battery pieces, the splicing joints of the toothed battery pieces are pasted and fixed with transparent high-temperature tape, the battery plate layer is provided with a layer of 1# packaging material, and the 1# packaging material is provided with a flexible front plate .

A method for preparing a flexible solar cell module, comprising the steps of:

1) When making CIGS solar cells, a conductive layer of graphene material is made on the upper surface, and then the large CIGS solar cells are cut to obtain tooth-shaped battery sheets with tooth-shaped ends;

2) Unfold and place the flexible backplane on the solar cell module manufacturing platform, and stack 2# packaging materials on the flexible backplane;

3) Arrange the cut tooth-shaped battery pieces on the 2# packaging material in order according to the alveolar butt joint, and keep the ends of two adjacent tooth-shaped battery pieces connected to the upper and lower surfaces;

4) Use transparent high-temperature tape to paste and fix the joints of two adjacent toothed battery pieces, and then stack the 1# packaging material on the arranged battery board layer;

5) Stack the flexible front plate on the 1# packaging material, and then transfer the stacked multi-layer materials to the laminator for lamination;

6) Connect wires to the positive and negative poles of the module respectively and install a junction box to obtain a flexible solar cell module.

Beneficial effect

Compared with the prior art, the present invention has the following advantages.

It prevents the connection material between the cells from blocking the sunlight on the surface of the cells, and can reduce the manufacturing process of the module, thereby increasing the overall light conversion efficiency of the module by more than 3%.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a structural schematic diagram of a flexible solar cell module of the present invention;

Fig. 2 is a schematic diagram of the structure of a toothed cell used in a flexible solar cell module of the present invention when it is cut;

Fig. 3 is a schematic diagram of lamination of toothed cells of a flexible solar cell module according to the present invention.

detailed description

A flexible solar cell module, comprising a flexible backplane 1, a battery plate layer 4, and a flexible front plate 7, as shown in Figures 1, 2, and 3, the flexible backplane 1 is provided with a layer of 2# packaging material 3 2# packaging material 3 is provided with a battery plate layer 4 spliced by toothed battery sheets 6 with graphene material 8 on the surface. A layer of 1# packaging material 2 is provided on the battery plate layer 4, and a flexible front plate 7 is provided on the 1# packaging material 2.

A method for preparing a flexible solar cell module, comprising the steps of:

1) When making a CIGS solar cell, a layer of graphene material 8 conductive layer is made on the upper surface, and then the large CIGS solar cell is cut to obtain toothed battery sheets 6 with toothed ends;

2) Expand and place the flexible backplane 1 on the solar cell module manufacturing platform, and stack 2# packaging material 3 on the flexible backplane 1;

3) Arranging the cut tooth-shaped battery pieces 6 on the 2# packaging material 3 in order according to the alveolar butt joint, keeping the ends of two adjacent tooth-shaped battery pieces 6 connected to the upper and lower surfaces;

4) Paste and fix the joints of two adjacent toothed battery sheets 6 with transparent high-temperature adhesive tape 5, and then stack the 1# packaging material 2 on the arranged battery plate layer 4;

5) Stack the flexible front panel 7 on the 1# packaging material 2, and then transfer the stacked multi-layer materials to a laminator for lamination;

6) Connect wires to the positive and negative poles of the module respectively and install a junction box to obtain a flexible solar cell module.

The invention adopts the design of making the joints of the battery slices have a specific tooth shape when cutting the battery slices, and then lapping the battery slices together in a corresponding way, so that a battery assembly without bus bars can be realized, and no need to use The bus bar that shields the surface does not require welding process, and at the same time, it can realize the maximum area utilization of the module, thereby improving the overall light conversion efficiency of the module.

Claims (2)

1. a flexible solar battery pack, comprise flexible back plate (1), battery flaggy (4), flexible front plate (7), it is characterized in that, described flexible back plate (1) is provided with one deck 2# encapsulating material (3), 2# encapsulating material (3) is provided with the battery flaggy (4) that one deck is spliced with the dentation cell piece (6) of grapheme material (8) by surface, dentation cell piece (6) joints position is pasted fixing with transparent high-temperature adhesive tape (5), described battery flaggy (4) is provided with one deck 1# encapsulating material (2), 1# encapsulating material (2) is provided with flexible front plate (7).

2. the preparation method of a kind of flexible solar battery pack according to claim 1, is characterized in that, comprise the steps:

1) when making CIGS solar cell, upper surface makes one deck grapheme material (8) conductive layer, then the cutting of bulk CIGS solar cell is obtained the dentation cell piece (6) that two ends are dentation;

2) flexible back plate (1) is launched to be placed on solar module platform for making, and stack 2# encapsulating material (3) in flexible back plate (1);

3) the dentation cell piece (6) of well cutting is arranged on 2# encapsulating material (3) successively by teeth groove docking, keeps the end of adjacent two pieces of dentation cell pieces (6) to be coupled to each other upper and lower surface;

4) paste the joint area of fixing adjacent two pieces of dentation cell pieces (6) with transparent high-temperature adhesive tape (5), then 1# encapsulating material (2) is overlayed on the battery flaggy (4) of having arranged;

5) flexible front plate (7) is overlayed on 1# encapsulating material (2), then the above-mentioned multilayer material stacked is sent in laminating machine together and carries out lamination;

6) respectively wire connect to the both positive and negative polarity of assembly and terminal box is installed, namely obtaining flexible solar battery pack.