RU2297076C1 - Solar battery - Google Patents

Abstract

FIELD: electrical engineering; solar batteries for solar-to-electrical energy conversion.

SUBSTANCE: proposed solar battery has frame with uniformly disposed locations and tightened net sheet in the form of orthogonally disposed strings and modules stitched to them. Modules have solar cells interconnected by means of conducting buses to form electric circuit and assembled into cell blocks. Each cell block may have two or more cells protected by means of single transparent plate attached to their rear and face sides, respectively. Solar cells are physically integrated within module by means of perforated film substrate inserted between rear plates and solar cells and attached to frame by stitching them at intersection points of their orthogonally disposed strings; the latter are spaced apart on frame through distance which is a multiple of geometric dimensions of cell blocks.

EFFECT: enhanced specific power, reduced mass, and facilitated assembly of solar battery.

1 cl, 1 dwg

Description

The invention relates to electrical engineering, in particular to devices for generating electrical energy by direct conversion of light radiation, and is intended mainly for use in the construction of solar panels.

A known solar battery (RF patent for the invention No. 2156522 dated 03/29/1999). containing a frame and net for mounting solar cells making up the modules. As part of the modules, one glass protective plate is glued to each solar cell (photoconverter) on the front and back sides; Each solar cell has angled sections to provide space for attaching to the net sheet.

The features of the above patent, common with the proposed design of the solar battery, are as follows:

- panels;

- Elastically stretched mesh set fixed on the frame;

- fastening of solar cells and modules is carried out using threads.

The disadvantages of this battery are:

- significant mass of net-canvas;

- loss of usable area due to the large number of angular sections and large gaps between adjacent solar cells and, as a result, a shortage of power;

- high complexity of installation due to the large number of mounting points.

The closest adopted for the prototype is a solar battery (RF patent for the invention No. 2220477 dated 12/27/2003), made in the form of a tubular frame with a net-hollow in the form of strings stretched in orthogonal directions with a step equal to the solar element location step. One front and one back protective plates are pasted on each solar cell. Each solar cell has four corner cuts for places for attaching the module to the net sheet.

The features of the prototype, common with the proposed design of the solar battery, are as follows:

- a frame with an elastically tensioned net-cloth made of strings intersecting in orthogonal directions and modules sewn to them, consisting of conductive busbars connected to each other in the electric circuit of solar cells protected by transparent plates glued to the solar cells from the front and back sides, and structurally combined with a perforated film substrate glued between the back plates and solar cells;

- the substrate with solar cells glued onto it is fixed to the strings at their intersections.

The technical result achieved in the proposed solar battery is as follows:

- increase in the specific power of the solar battery;

- reduction in the mass of the solar battery;

- reducing the complexity of assembly operations in the manufacture of a solar battery.

The aforementioned technical result is achieved in that in a solar battery containing a frame with evenly spaced cells and a tensioned net-sheet in the form of orthogonally arranged strings and modules sewn thereto, consisting of conductive busbars connected to each other in an electric circuit of solar cells protected by transparent plates glued to solar cells from the front and back sides, and structurally united by a perforated film substrate glued between the back plates and with solar elements, which are thus fixed to the frame by sewing the substrate in places of orthogonally arranged strings of the net, the modules are presented in the form of block elements, each of which consists of two or more commutated solar cells, protected by one common transparent plate glued to the front of the solar elements and one common plate glued to the back of the solar cells, the strings on the frame are arranged in increments that are a multiple of the geometric dimensions of the block elements.

Combining solar cells into block cells allows you to:

- reduce the number of angular slices of solar cells to two or less;

- increase the pitch of the strings on the frame, reducing their mass and the mass of the fastening elements of the modules to them;

- reduce the gaps between solar cells inside the block elements to the minimum.

Distinctive features of the proposed solar battery, determining its compliance with the criterion of "novelty" are as follows:

- the solar cells of each module are combined into block cells;

- each block element consists of two or more commutated solar cells, protected by one common transparent plate glued to the front of the solar cells and one common plate glued to the back of the solar cells;

- the strings on the frame are arranged in steps that are a multiple of the geometric dimensions of the block elements.

To prove the conformity of the proposed solar battery with the criterion of "inventive step", the whole set of features and separately distinctive features were analyzed. It is established that the use of the above distinctive features, which, in combination with the known features, give the above technical result, is not found in literary sources. Thus, according to the authors, the proposed solar battery meets the criterion of "inventive step".

The proposed solar battery consists of a frame 1 with evenly spaced cells 2 and a tensioned net-sheet 3, consisting of strings 4, intersecting in orthogonal directions.

In each cell 2, modules 5 are installed, consisting of block elements 6, in which the solar cells 7 are connected together in series using switching buses 8 and the substrate 9. In each block element 6, one common transparent plate is glued from the front and back 10 and 11, respectively. The block elements 6 are connected in series using switching buses 12. The block elements 6 have four corner cuts 13 for forming free zones intended for fastening to strings 4, in which special non-metallic buttons 14 are placed, having holes through which the modules are sewn 5 to strings 4 at their intersections. Sewing is carried out by a thread.

An example of a specific implementation of the proposed solar battery.

A solar battery was made for the communications spacecraft, which includes eight panels. The frame 1 of each panel is made of carbon fiber pipes, and the panel is divided into sixteen cells 2. The overall dimensions of the panel are 1600 × 3200 mm, the outer diameter of the outer pipes of the panel of the frame 1 is 25 mm, and the inner ones forming cells 2 are 22 mm. On the frame 1 is setopolyno 3, consisting of strings 4, intersecting in orthogonal directions. In each cell 2 of the panel, modules 5 are installed, consisting of sixty-six block elements 6, two solar cells 7 in each block element 6. The solar cells 7 are connected in series using silver switching buses 12 and the substrate 9. String step 4 equal to the overall dimensions of the block element 6. In each block element 6, one common glass plate 10 and 11, respectively, is glued from the front and back sides. As the substrate 9, a perforated polyimide film with a thickness of 120 μm is used, which is glued between the solar cells 7 and the back plates. The gap between the solar cells 7 in the block element 6 is 0.3 + 0.1 mm, which is 3.3 times less than between adjacent block elements 6. The block elements 6 are made in a rectangular shape, have four corner cuts 13, two on each solar cell 7, for the formation of free zones for attachment to the strings 4, in which special non-metallic buttons 14 are placed, having holes through which the modules 5 are sewn (tied) to the strings 4 at their intersections. Sewing (binding) is carried out by a thread.

Claims (1)

A solar battery containing a frame with evenly spaced cells and a tensioned net-sheet in the form of orthogonally arranged strings and modules sewn to them, consisting of solar cells connected to each other by conductive busbars in the electrical circuit, protected by transparent plates glued to the solar cells from the front and back sides, and structurally combined perforated film substrate glued between the back plates and solar cells, mounted on the frame by sewing substrates at the intersection of orthogonally located strings, characterized in that the solar cells of each module are combined into block cells, each of which consists of two or more commutated solar cells, protected by one common transparent plate glued to the front of the solar cells, and one common a transparent plate glued to the back of the solar cells, while the strings on the frame are arranged in increments that are a multiple of the geometric dimensions of the block elements.

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