JPS5827378A - Solar battery module - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforced photovoltaic solar cell module (hereinafter simply referred to as a solar cell module) in which at least one solar cell element is embedded in a synthetic resin and rests on a support. .

As is known, solar cells can be placed in solar modules in such a way that, on the one hand, the individual solar cells are protected and, on the other hand, large surfaces are covered, without the need for individual wiring of the solar cells. There are various variations of solar modules that are conventionally rigid over all sides and therefore require a rigid and flat frame.

Such rigid solar modules are not compatible with curved surfaces, which severely limits their application surface.

However, it is unavoidable to make the solar cell module rigid because otherwise the individual solar cell elements would be destroyed by bending.

It is therefore an object of the present invention to provide a solar cell module which protects the solar cell elements from bending stresses, but which is still flexible enough to be able to rest on curved surfaces.

This object is achieved according to the invention in that the solar cell element is reinforced by a planar rigid element and the support is of flexible design. The support can consist of a flexible material, for example in the form of a fabric, a mesh or a foil.

That is, in the present invention, it is important that the entire solar cell module is not rigid. Rather, only those areas that are particularly dangerous to damage are made rigid. That is, in principle, a flat, rigid element body is provided only in that area or surface, and a solar cell element is provided within this element body. That is, the planar, rigid element body occupies approximately the same area as the solar cell element, and partially fills the solar cell module together with the solar cell element.

Because the solar cell element is backed by a rigid material, tensile, compressive, or bending stresses applied to the flexible support do not transfer forces to the solar cell element that could damage it. On the other hand, solar modules can accommodate curvatures due to the flexible support.

By partially stiffening in this solar cell element region, the entire surface of the solar cell module can be made substantially flexible and "soft". The overall strength requirements for the materials used are also lower, so that the solar cell module can be realized at substantially reduced costs.

Another advantage of the solar module according to the invention lies in the fact that it allows construction of module surfaces of virtually any size with little increase in specific area weight; It can be reinforced with a rigid body. Such areas are
For example, it is a connection site between individual solar cell elements. In the area outside the rigid body, the bonding of the solar module can be carried out using a particularly zinc-coated metal fabric or mesh, protected against corrosion, e.g. by a facing layer, or else e.g. glass fibres, carbon fibres, synthetic resin fibres, etc. This is ensured by a flexible support element which can be a flexible composite material, such as a synthetic resin fabric reinforced with a synthetic resin fabric, a synthetic resin fabric or a foil reinforced in this way.

According to the invention, significant savings in materials and low manufacturing costs are achieved, for example on uneven bottom surfaces, car roofs, etc.
It is possible to produce solar modules with which even curved surfaces, such as stone walls, the front of houses, etc., can be covered.

□-4 It becomes. This correlation between area and cost disappears with the present invention. Thus, the solar cell module according to the invention allows large areas to be covered with less material and manufacturing effort. That is, only, for example, a three-minute reduction in material or weight is required compared to conventional modules.

Solar cell modules can be manufactured continuously from prefabricated foils, strips, synthetic resin-reinforced fibers, and the like.

In principle, according to the invention, the flexible material is formed from a synthetic resin foil or a flexible composite material and is placed around a partially rigid solar cell element in order to meet various objectives. The desired solar cell module is then produced in an endless manufacturing process. The synthetic resin foil can consist, for example, of a synthetic resin that can be welded thermally or ultrasonically, if appropriate under pressure, or of an adhesive foil or a laminate. As the synthetic resin, a thermosetting molding material, an epoxy resin molding material, a polyurethane resin molding material, a silicone resin molding material, a polyester resin molding material, an acrylic resin molding material, or a thermoplastic resin can be used. In this case, the thermosetting synthetic resin can be produced by a casting method, a percolation method, a lamination method or a coating method.

The present invention will be explained below with reference to the drawings.

In FIG. 1, a solar cell element 7 is embedded in a synthetic resin 2 reinforced by a glass fabric 8. In FIG. The glass fabric 8 here consists of two layers, one layer provided above the solar cell element 7 and one layer below the solar cell element 7Q.

The upper side of the synthetic resin 2 is coated with a transparent, scratch-proof, weather-resistant and cleanable synthetic resin layer 1 (for example, tetra-polyvinyl evaporate). In addition, an electrical intermediate connection body 3 is also embedded in the synthetic resin 2, via which the individual solar cell elements 7 forming the solar cell module are interconnected. A multilayer foil or composite foil 4 is used as a vapor diffusion barrier. Beneath this multilayer foil 4 there is still a flexible support 5 .

Underneath the solar cell element 7 is a flat, hard element body, such as a metal or synthetic resin plate 6. This rigid body 6 reinforces the solar module in the area of the solar cell elements 7 and together with the flexible support 5 forms a connecting structure for the module. The flexible support 5 is glued with the multilayer foil 4 and projects in the right part of the figure, ie in the area without solar cell elements 7.

A metal or synthetic resin plate 6 can also be bonded to the glass fabric 8.

FIG. 2 shows how the individual solar cell elements 7, 7', 7'' and the intermediate connector 3 are arranged with respect to each other. FIGS. 3 to 5 show the mutually corresponding structural parts. The same reference numerals as in FIG. 1 are given.

In the embodiment of FIG. 3, the glass fabric 8 is not required.

The solar cell element 7 is lined with a plate 6 before being incorporated into the synthetic resin 2. The flexible support 5 is incorporated into the synthetic resin 2 in this example.

In the embodiment shown in FIG. 4, in addition to the embodiment shown in FIG.
There are layers of glass fabric 8, one above the solar cell element 7 and one below the solar cell element 7.

In the embodiment of FIG. 5, there is additionally a thin glass layer 10, which facilitates the reinforcing effect, so that the plate 6 can be made much thinner or can be dispensed with altogether. Optionally, a thin glass layer 10 can also be incorporated into the synthetic resin layer 1, resulting in a rough surface.

[Brief explanation of drawings]

1, 3 to 5 are sectional views of different embodiments of the present invention, and FIG. 2 is a plan view of FIG. 1. 1...Synthetic resin layer, 2...Reinforced synthetic resin,
3... Electrical intermediate connector, 4... Multilayer foil, 5...
...Flexible support body, 6...Hard synthetic resin plate, 7.
7', 7"...Solar cell element, 8...Glass fabric, 10...Thin glass layer. Continuation of page 1 Priority claim 01981/10/23 ■West Germany (D
E) [Yes] P3142129.6 @Inventor Rainer Havritsch Heimstuten Leyerbeek, Federal Republic of Germany 14

Claims (1)

[Claims] l) At least one solar cell element is embedded in a synthetic resin and placed on a support, in which the solar cell element is reinforced by a flat, rigid element body, and the support is A solar cell module characterized by being formed in a flexible manner. 2) The solar cell module according to claim 1, wherein the planar, rigid element body occupies approximately the same area as the solar cell element, and partially fills the solar cell module together with the solar cell element. 3) A solar cell module according to claim 1 or 2, characterized in that a planar, hard element body is bonded to a synthetic resin that encases a solar cell element. 4) The solar cell module according to any one of claims 1 to 3, wherein the support is a zinc-coated iron wire fabric or a zinc-coated iron wire net. 5) The solar cell module according to any one of claims 1 to 3, characterized in that a support made of iron wire fabric or net is covered with a face layer. 6) The solar cell module according to any one of claims 1 to 5, characterized in that a multilayer foil serving as a vapor diffusion barrier is provided between the synthetic resin and the support. 7) The solar cell module according to any one of claims 1 to 6, characterized in that a glass fabric is embedded in a synthetic resin. 8) A solar cell module according to claim 7, characterized in that the glass fabric runs in a single layer above and below the solar cell elements, respectively. 9) The solar cell module according to any one of claims 1 to 8, wherein the electrical connector of the solar cell element is embedded in a synthetic resin. 10) The solar cell module according to any one of claims 1 to 9, characterized in that a transparent synthetic resin layer is placed on top of the synthetic resin. 11) The solar cell module according to any one of claims 1 to 10, wherein the planar, hard element body is made of metal, synthetic resin, or composite material. 12) The solar cell module according to claim 1, wherein the solar cell element is lined with a flat, rigid element body. 13) Claims 1 to 1, characterized in that a thin glass layer is provided in the area above the solar cell element.
The solar cell module according to any one of Item 2. 14) The solar cell module according to any one of claims 1 to 13, wherein the synthetic resin is a thermosetting molding material. 15) The solar cell module according to any one of claims 1 to 14, wherein the synthetic resin is an epoxy resin molding material. 16) The solar cell module according to any one of claims 1 to 14, wherein the synthetic resin is a polyurethane resin molding material. 17) The solar cell module according to any one of claims 1 to 14, wherein the synthetic resin is a silicone resin molding material. 18) The solar cell module according to any one of claims 1 to 14, wherein the synthetic resin is a polyester resin molding material. 19) The solar cell module according to any one of claims 1 to 14, characterized in that the synthetic resin is an acrylic resin molding material. 20) Claim 1, characterized in that the thermosetting resin is produced by a casting method, a permeation method, a lamination method, or a coating method.
15. The solar cell module according to any one of items 1 to 14. 21) The solar cell module according to any one of claims 1 to 13, wherein the synthetic resin is a thermoplastic resin. 22) The solar cell module according to any one of claims 1 to 13, characterized in that the synthetic resin is made of thermally weldable foil.