RU2332750C1 - Solar battery panel - Google Patents

Abstract

FIELD: physics; illumination.

SUBSTANCE: solar battery (SB) panel consists of frame, net to mount and fix photoconverters (PC), PC and substrates designed as modules. Net consists of strings crossed in orthogonal directions and elastically stretched fixed on frame. Modules are mounted over strings and attached to strings in knots of their crossing by fasteners. String pitch dimension provides arrangement of knots of string crossing under PC. Fastener (holder) is designed as integral disk furnished with string cavities on the side adjoining to the back side of modules. Fasteners (holders) are connected (pasted together) with strings on cavity surfaces, and, from the back side of modules, on flat surfaces between cavities.

EFFECT: increased specific solar battery power; reduced laboriousness and simplified solar battery panel manufacturing techniques.

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Description

The invention relates to devices that generate electricity by directly converting solar energy into electrical energy using semiconductor photoconverters (FP), and used primarily in space technology as primary sources of electric current.

Known solar battery (SB) according to the patent of the Russian Federation No. 2156522, class. H01L 31/042, publ. 09/20/2000, BI No. 26. The SB consists of flat panels made in the form of a frame with a net-sheet stretched over it, divided into cells. Modules are installed in the cells, consisting of FPs connected by molybdenum busbars, protective glass plates on the front and back sides of the FP, and a film substrate installed between the back of the FP and the glass plate and glued to the FP through perforation in it. The film substrate is sewn to the net sheet through power non-metallic fastening elements that are located at the points of convergence of the phase transition in the zone of angular slices on them. Molybdenum switching buses run along the entire length of the FP on their front and back sides, while the fastening points of the tires by soldering (welding) are mutually offset on the front and back sides of the FP. Molybdenum tires in the areas of angular cuts on the FP have platforms and thermal compensation bends in the switching circuits of the FP.

The described construction has several disadvantages:

- angular slices on AF necessary for placing fastening elements of the film substrate to setepolotnu and platforms tires and thermo-compensation bends in them, lead to a decrease photoactive surface AF and accordingly to reduce Sa capacity (including specific power - W / m ²⁾ ;

- the presence in the design of the SB of two substrates, the main one from a net-sheet (perceiving overload) and a film, creates an excess mass of SB and increases its specific gravity - kg / m ² .

Also known is the SB panel (prototype) according to the patent of the Russian Federation No. 2220477, class. H01L 31/042, publ. 12/27/2003, BI No. 36. The SB panel consists of a frame, a mesh for placing and attaching an FP. Setoplotno in an elastically stretched state is fixed on the frame and made of strings intersecting in orthogonal directions. On top of the strings, at the nodes of their intersection, a substrate is attached with FP glued to it, and the pitch of the strings in each direction is not less than the actual size of the FP. The substrate is attached to the strings through perforations using fasteners of two parts, one on the other, providing contact between the strings and the substrate, for example, so that one of the parts of the fastener is made in the form of a washer, and the other, which is inside the hole of the washer, is made in the form a button having in the leg orthogonally intersecting slots equal to the width of the string in which the strings are located. The strings fit the rods of the frame perimeter over the bosses adjacent to the rods of the frame and raise the level of the net canvas above the frame in order to increase the area of the FP installation on the panel.

In this design of the SB panel, by raising the level of the strings above the frame, the area of the FP placement is increased and the possibility of increasing the power of the SB is created. But the installation of strings and fasteners in the spaces between the FIs leads to a decrease in the size of the FIs, which is why not only the advantage of increasing the area of the FPs is neutralized, but the SB power also decreases.

For the installation and installation of fasteners, the exact alignment of the centers of perforation with the crosshairs of the strings, as well as the exact location of the perforation relative to the edges of the FI. These requirements complicate the manufacturing technology of the SB panel.

The technical result achieved in the proposed design of the SB panel is:

- an increase in the power of the SB panel (also specific power - W / m ² ), proportional to the increase in the area of the FP;

- simplification of the manufacturing technology of the SB panel, due to the possibility of independent arrangement of strings and fasteners relative to the edges of the FP, as well as the substrate.

The technical result is realized in the design of the SB panel containing the frame, mesh for placing and attaching the FP made of strings intersecting in orthogonal directions and fixed in an elastically stretched state on the frame, the FP and the substrate in the form of modules mounted on top of the strings and attached to the strings in nodes intersecting them with fasteners.

Distinctive features that meet the criterion of “novelty” are as follows: the size of the pitch of the strings provides the location of the intersection nodes of the strings under the FP and the fastener (holder) is made in the form of a solid disk with recesses for the strings on the side adjacent to the back of the modules, while the fasteners (holders ) are connected (glued) with strings on the surface of the recesses, and with the back of the modules - on the flat surfaces between the recesses.

As an example of the use of the invention, the design of the SB panel shown in Figs. 1-4 is proposed.

Figure 1 shows a fragment of the SB panel, its structure includes a frame (1), a net-canvas (2), modules (3), fastener-holders (4).

The frame (1) contains tubular rods (5), connecting fittings (6), which together form a supporting structure that perceives the tension of the strings (8, 9) and inertial loads during the flight stage of the launch vehicle. The bosses (7) on the rods (5) provide raising the level of the strings (8, 9) above the frame (1) to expand the installation area of the modules (3). The net canvas (2), which is the supporting surface for the modules (3), consists of longitudinal (8) and transverse (9) strings glued in a stretched state with bosses (7) and tubular rods (5). The step size between strings depends on the dimensions L, B (1) modules (3) and is received from the condition of having not less than 3 ^x 4 ^x crossing under individual strings FP nodes, e.g., with dimensions of 80x80 mm, or under multiple unit FP with general protection by a glass plate, for example, with dimensions of 76.2 × 50.4 mm.

The design of the module (3) is shown in Fig. 4 and includes a rectangular FP (10) without bevels (slices) in the corners, protective glass plates (12, 13) on the front and rear sides of the FP, a substrate (11) installed in places flexible sections of tires. A translucent adhesive (14), for example, based on the composition of SKTNF, is used for adhesive bonding of FP (10), plates (12, 13), and plates (11) with each other. The module (3) also has electrical switching between the FIs, not shown in FIG. 4.

The fastening of the modules (3) to the net cloth (2) is shown in FIGS. 2 and 3. The clasp-holder (4) is made in the form of a solid disk, for example, by pressing from AG-4 polymer. On the side of the holder (4) adjacent to the back of the module (3), recesses (15, 16) are made. The location of the recesses in direction and height is identical to the strings (8, 9) at their intersection.

The adhesive joints (17) of the holders (4), for example, with RTV thermoplastic sealant, are made with strings (8, 9) along the surfaces of the recesses (15, 16), and with the back of the modules (3) along the surfaces of the sectors (18). The sealant cures in the temperature range of the workshop conditions.

The location of the intersection nodes of the strings under the FP, and the fasteners (holders) on the back of the modules allows you to:

- minimize the gap between the AF and increase the photoactive surface of the AF, while the proportional increase in the specific power of the SB will be approximately 2%;

- reduce the complexity and simplify the manufacturing technology of the SB panel by eliminating perforation in the substrate and, accordingly, the requirement of combining its centers and string intersection nodes, relevant for large panels (for example, 2 × 3 m).

A set of mechanical and thermal vacuum tests was carried out on a prototype SB panel. Test results confirm the required uptime and repair capabilities.

Claims (1)

A solar panel containing a frame is mesh-mounted for accommodating and fastening photoconverters made of strings intersecting in orthogonal directions and fixed in an elastically stretched state on the frame, photoconverters and a substrate in the form of modules mounted on top of strings and attached to strings at the nodes of their intersection with using fasteners, characterized in that the step size of the arrangement of strings provides the location of the nodes of the intersection of the strings under the photoconverters and the fastener (holder) is made in the form of intact a disk with recesses for strings on the side adjacent to the rear side of the modules, while fasteners (holders) are connected (glued) with strings on the surfaces of the recesses, and with the back of the modules on flat surfaces between the recesses.

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