TW202203469A - Glass block having power generating function - Google Patents

Abstract

To provide a glass block to which a power generating function is conferred without affecting the appearance of the glass block. A glass block (1) having a power generating function is provided with: a glass block body (2) having an inner space (4) formed by joining open ends of a pair of box-shaped, light-transmissive glass molded bodies (3); a solar cell module (6) having a plurality of spherical solar cells (5) and assembled in the inner space (4); and output extraction terminals (17, 18) connected to output terminals of the solar cell module (6) and extending to the outside of the glass block body (2). The open ends of the pair of glass molded bodies (3) are joined by means of elastic adhesive with the output extraction terminals (17, 18) sandwiched therebetween.

Description

Glass brick with power generation function

The present invention relates to a glass brick with a power generation function that incorporates a solar cell module into an inner space.

The glass bricks join the open ends of a pair of box-shaped light-transmitting glass forming bodies to each other, and form an inner space. Glass bricks are excellent in heat resistance, sound insulation, and light transmission, and are widely used in the outer and inner walls of buildings such as lighting wall materials, or building materials such as balconies and partition walls. On the other hand, building materials-integrated solar cells that integrate solar cell modules with glass windows or façades have been proposed so far. The inventor of this case also proposes building-material-integrated solar cells using spherical solar cells. However, a building-material-integrated solar cell in which spherical solar cells are incorporated into glass bricks has not been disclosed in the past.

According to the technical information disclosed on the Internet, the British company "Build Solar" has disclosed the concept of a glass brick, which is to disperse small-diameter lenses on the surface of the glass brick, and dispersely arrange the inside of the glass brick to receive small diameter lenses. A small solar power generation element (or a solar thermal power generation element) that condenses light with a diameter lens, and gives it a power generation function.

There is a known building material-integrated solar cell, which is in a multi-layer glass composed of two glass plates, and a solar cell film (dye-sensitized thin-film solar cell) with light penetration is formed on the inner surface of one side of the glass. ) to make it light penetrating. The inventors of the present application have proposed various devices incorporating solar cell devices or solar cell modules in which a large number of spherical solar cell elements are connected in series and in parallel.

In the semiconductor device of Patent Document 1, a substantially spherical pn junction is formed near the surface of a spherical semiconductor element, and a pair of electrodes connected to both ends of the pn junction is formed. In the semiconductor device of Patent Document 2, a flat surface is formed at one end of a spherical semiconductor element, a substantially spherical pn junction is formed near the surface of the spherical element, and a pair of electrodes are formed on the flat surface and the top of the spherical element.

The light-receiving or light-emitting panel of Patent Document 3 forms hexagonal holding holes in a multi-row and multi-row pattern on a synthetic resin panel, and mounts spherical semiconductor elements in these holding holes. The surface forms an electrical path connecting a plurality of spherical semiconductor elements in series and in parallel.

The light-receiving or light-emitting semiconductor module of Patent Document 4 is a panel-shaped split die formed from a synthetic resin material in a state in which spherical semiconductor elements arranged in multiple rows and multiple rows are connected in series and in parallel through metal wires. A plurality of split modules are detachably accommodated in the accommodating box and are electrically connected, so that the spherical semiconductor elements can be recovered and reused. [Previously known technical literature] [Patent Literature]

Patent Document 1: Japanese Patent No. 3262174 Patent Document 2: Japanese Patent No. 4113118 Patent Document 3: Japanese Patent No. 3902210 Patent Document 4: Japanese Patent No. 4948423

[Problems to be solved by the invention] Conventional general glass bricks do not have a power generation function, so they cannot be utilized as solar cells. Although glass bricks are often installed in places that can easily receive sunlight, glass bricks with power generation functions have not been put into practical use.

In the case of glass bricks with power generation functions disclosed on the Internet, the solar power generation elements are arranged in the inner space of the glass bricks in a manner corresponding to each of a large number of small diameter lenses, which must be precisely positioned and fixed. Therefore, the structure It is complicated and the production cost becomes high. Furthermore, although glass bricks are building materials excellent in design, if a large number of small-diameter lenses are formed on the surfaces of the glass bricks, there is a possibility that the designability of the appearance of the glass bricks may be adversely affected.

The purpose of the present invention is to provide a glass brick, which can endow the power generation function without affecting the appearance of the glass brick.

[Technical means to solve the problem] The glass brick with power generation function of the present invention is characterized by comprising: a glass brick body, which is formed by joining the open ends of a pair of box-shaped light-transmitting glass forming bodies to each other to form an inner space; a solar cell module, It is a solar cell module formed by burying a plurality of spherical solar cells in a synthetic resin material with light permeability, and the solar cell module is sandwiched by the open ends of the pair of glass moldings. The outer peripheral part of the solar cell module is inserted into the inner space; and an output take-out terminal is connected with the output terminal of the solar cell module and extends to the outside of the glass brick body; the solar cell module has the plurality of spherical solar cells A mesh connection circuit module in which battery cells are connected in series and in parallel, and the mesh connection circuit module is embedded in the synthetic resin material to form a flat solar cell module; the flat solar cell module It is arrange|positioned so that the said internal space may be divided into two parts, and a ventilation hole is formed in the said solar cell module.

According to the above configuration, when sunlight enters the glass brick body of the glass brick having the power generation function and reaches the solar cell module, the spherical solar cell will generate electricity, and the electric power can be extracted from the positive and negative output terminals and the output extraction terminal to the solar cell module. external. The appearance and function of the glass brick body can be maintained and the power generation function can be imparted without changing the appearance of the glass brick body, so that a glass brick having the power generation function and applicable as a building material with excellent versatility can be provided. In addition, the glass brick body is effectively used as the packaging of the solar cell module, so the packaging cost can be reduced.

[Inventive effect] According to the present invention, the above-mentioned excellent effects and effects can be obtained.

Here, the present invention can adopt various preferred modes as follows. In the first aspect, the open ends of the pair of glass molded bodies are in a state of sandwiching the output extraction terminal, and the open ends of the pair of glass molded bodies are joined to each other using an elastic sealing material.

In the second aspect, the glass molded body has a light-transmitting wall portion that allows light to enter/exit with respect to the inner space, and the solar cell module is fixed to the light-transmitting wall portion of the glass molded body on one side. The inner surface.

Below, the form for implementing this invention is demonstrated based on an Example.

Example 1 As shown in FIGS. 1 to 3 , the glass brick 1 having a power generating function according to the first embodiment includes a glass brick body 2 that joins the open ends 3 a of a pair of box-shaped light-transmitting glass molded bodies 3 to each other , and form an inner space 4; a solar cell module 6, which is a solar cell module 6 having a plurality of spherical solar cell units 5, and is loaded into the aforementioned inner space 4; and output take-out terminals 17, 18, which are connected with The output terminals of the solar cell module 6 are connected and extend to the outside of the aforementioned glass tile body 2 .

First, the structure of the spherical solar cell 5 having a power generating function will be described. As shown in FIG. 7 , a flat surface 10 a is formed on one end side of a spherical p-type silicon crystal 10 (1.0 to 2.0 mm in diameter, and 1.8 mm in this embodiment). A substantially spherical n-type layer 11 having a thickness of about 1 μm in which n-type impurities are diffused is formed near the surface of the silicon crystal 10 , and a substantially spherical pn junction 12 is formed.

An antireflection film 13 composed of a silicon oxide film and a silicon nitride film is formed on the surface of the n-type layer 11 . On the flat surface 10a, the positive electrode 14 connected to the silicon crystal 10 is formed through the anti-reflection film 13, and on the side opposite to the positive electrode 14, the negative electrode 15 connected to the n-type layer 11 is formed through the anti-reflection film 13. . The positive electrode 14 is connected to the wire 16 (tin electroplated copper wire with a diameter of 0.15 mm) through the solder 14a, and the negative electrode 15 is connected to the wire 16 through the solder 15a. The circuit diagram symbols of this spherical solar cell 5 are shown in FIG. 8 . In addition, this spherical solar cell 5 can be manufactured by the manufacturing method similar to the manufacturing method disclosed in the patent document 1 of this inventor's patent.

Next, the glass brick 1 which has a power generation function is demonstrated based on FIGS. 1-6. The glass brick body 2 of the glass brick 1 having a power generation function is formed by joining the open ends 3a of a pair of glass molded bodies 3 to each other. The glass molded body 3 has: a square-shaped light-transmitting wall portion 3b;

Inside the glass tile body 2, a square-shaped inner space 4 is formed by the concave portion 4a and the concave portion 4a, and a square plate-shaped solar cell module 6 is placed in the inner space 4 in the dry air of about 0.6 atmosphere. The solar cell module 6 is sealed and joined with silicone rubber 7 in a state of being sandwiched between the open end 3a and the open end 3a of the pair of glass molded bodies 3 at a portion having a width of about 5 mm. As described above, since the inner space 4 in which the solar cell module 6 is housed is sealed in a pressurized environment, dew condensation at low temperature can be prevented.

A square groove 8 with a rectangular cross-section is formed on the outer peripheral part of the glass tile body 2, and a sealing material 9 made of epoxy resin with a thickness of about 2 or 3 mm is applied to the outer peripheral surface of the square groove 8, and then heat-hardened. The solar cell module 6 is arranged in a state in which the internal space 4 is divided into two parts, and the spaces on both sides of the solar cell module 6 are communicated by a pair of ventilation holes 6h formed in the solar cell module 6 . Therefore, no pressure difference is generated on both sides of the solar cell module 6 . In addition, the above-mentioned ventilation holes 6 h can be used for the positioning of the solar cell module 6 in the assembly step of the solar cell module 6 .

One side of the square-shaped glass molded body 3 is, for example, 145 mm, and the height is about 44.5 mm. The length of one side of the inner space 4 is, for example, about 120 mm. The depth of the recess 4a is about 34.5 mm. The thickness of 3c is, for example, 10 mm. However, it is not limited to the above-mentioned dimensions.

Next, the above-described solar cell module 6 will be described with reference to FIGS. 2 to 6 . FIG. 4 is a diagram showing a part of a connection circuit module 6 m that connects a plurality of solar cells 5 in series and in parallel. This connection circuit module 6m is provided, for example, in 48 rows in which 25 solar battery cells 5 are connected in parallel with the lead wires 16, and a total of 1200 solar battery cells 5 are incorporated.

A positive output terminal 17 a is provided at one end (lower side in FIG. 4 ) of the connection circuit module 6 m , and a negative output terminal 18 a is provided at the other end (upper side in FIG. 4 ). The positive electrodes 14 and the negative electrodes 15 of the solar cells 5 in each row are connected to the corresponding wires 16 by solders 14a and 15a, and every three rows of the solar cells 5 are connected in series through the wires 16.

With the three rows of solar cells 5 and the three adjacent rows of solar cells 5 arranged in opposite directions of conduction, the wires 16 on both sides of each of the six rows are connected to the positive output terminal 17a, and are offset from these wires 16 by three. The wires 16 on both sides of each of the six rows are connected to the negative output terminal 18a. One pair of output take-out positive terminals 17 is provided extending from both ends of the positive output terminal 17a to the outside of the glass tile body 2 . One pair of output take-out negative terminals 18 is provided extending from both ends of the negative output terminal 18a to the outside of the glass tile body 2 .

The above-mentioned connection circuit module 6m will be as shown in FIG. 9 if the circuit diagram symbol 5A shown in FIG. 8 is used as an electrical path. For example, if the output voltage of one solar cell 5 is set to e and the output current is set to i, then when the connection circuit module 6m is directly exposed to sunlight and the incident light quantity is sufficient, the output voltage of the connection circuit module 6m is For example, it is 3e, and the output current becomes 1200i. However, the number of serial connections is not limited to three, and the total number of solar battery cells 5 is not limited to 1200, and can be appropriately set according to the application.

Next, the above-mentioned connection circuit module 6m is installed in a predetermined mold of a molding machine, and is molded with a transparent acrylic resin 6a, thereby forming the plate-shaped solar cell module 6 as shown in FIG. 5 . The dimensions of the solar cell module 6 are, for example, 91.2 mm in length, 89.3 mm in width, and 3 mm in thickness. According to the actual measurement value of the output of the solar cell module 6, the open voltage was 1.45 V, and the power generation amount was about 800 mW.

As shown in FIG. 3 , the solar cell module 6 is horizontally arranged in the inner space 4 of the glass tile body 2, and the outer peripheral portion of the solar cell module 6 is sandwiched between a pair of glass molded bodies 3 arranged in an opposite manner. Between the open end 3a and the open end 3a, the silicone rubber 7 is sealed and joined. Next, a sealing material 9 made of epoxy resin is formed on the outer peripheral surface of the square groove 8 on the outer periphery of the glass tile body 2 . A pair of output extraction positive terminals 17 and a pair of output extraction negative terminals 18 penetrate through the silicone rubber 7 and the sealing material 9 and extend to the outside of the glass tile body 2 . In addition, the output extraction positive terminal 17 and the output extraction negative terminal 18 may also be wired along the inside of the square slot 8 .

The action and effect of the above-mentioned glass brick 1 having a power generating function will be described. Prepare a plurality of these glass bricks 1 with power generation function, arrange these glass bricks 1 in multiple rows and rows, and join them with adhesive materials to form a wall or vertical wall-shaped structure. The output extraction positive terminal 17 and the output extraction negative terminal 18 extended from the glass brick 1 are connected to electrical equipment or electronic equipment through a predetermined wiring system, and are used in this state.

As shown in FIG. 10 , if sunlight enters the glass brick body 2 of the glass brick 1 with power generation function and reaches the solar cell module 6, the spherical solar cell unit 5 will generate electricity, and the power can be taken out from the positive terminal 17 and the output. The output take-out negative terminal 18 is taken out to the outside.

The appearance and function of the glass block body 2 as a building material can be maintained without changing the appearance of the glass block body 2 and a power generation function can be imparted, so the glass block 1 with a power generation function as a building material with excellent versatility can be provided. There are no reflection and appearance problems inherent in solar cells, and the inherent design properties of the glass brick 1 can be exerted.

Since the spherical solar cells 5 are used, the directivity with respect to the incident light is reduced, and the power generation capability is high. In addition, in the connection circuit module 6m, since the plurality of solar cells 5 are connected in series and in parallel, the degree of output reduction caused by partial shade is small. The glass brick 1 is excellent in versatility because it can generate electricity by light incident from both sides. The solar cell module 6 is accommodated inside the glass tile body 2, so the packaging cost can be reduced. Furthermore, the solar cell module 6 is protected by the glass tile body 2, so that the mechanical strength is increased and the durability is improved.

Since the interior space 4 of the glass tile body 2 is partitioned by the solar cell module 6 , it is expected to improve the mechanical strength, heat resistance, and sound insulation of the glass tile body 2 . Moreover, since the outer peripheral surface of the glass tile body 2 is sealed with the epoxy resin 9, reinforcement of the adhesive strength and surface protection of the open ends 3a of the glass molded body 3 to each other can be achieved.

The outer peripheral portion of the solar cell module 6 forms a light-penetrating space with a width of about 15 mm without the solar cell unit 5 , and the gap between the space and the solar cell unit 5 is an area capable of lighting. In the above embodiment, the area that can contribute to lighting is equivalent to about 73% of the entire area of the glass tile 1 , and the remaining area is the area that can contribute to solar power generation. However, this distribution can be adjusted by changing the occupied area of the solar cell 5 .

A modification of Embodiment 1 will be described. (1) Instead of the acrylic resin 6a for molding the solar cell module 6, a polycarbonate resin, a thermosetting silicone resin, a polyethylene naphthalate resin, or the like can also be used. (2) Instead of the silicone rubber 7 , hot-melt butyl rubber, chloroprene rubber, or urethane rubber may be used as the material for bonding the open ends 3 a of the glass molded body 2 to each other.

(3) Instead of the aforementioned epoxy resin 9, silicone resin, acrylic resin, vinyl acetate resin, polyethylene resin, polyvinyl butyral resin, melamine resin, hot-melt butyl rubber, etc. can also be used as protection The material of the outer peripheral surface of the glass brick body 2.

Example 2 As shown in FIG. 11 , in the glass tile 1A with power generation function of this Example 2, instead of molding the solar cell module 6A with acrylic resin, an EVA resin sheet 6b (ethylene/vinyl acetate polymer) was used for molding, Its surface is covered with a pair of thin glass plates 20 . The other structures are the same as those of the first embodiment, and therefore the same reference numerals are attached to the same constituent members, and the description thereof will be omitted.

The same connection circuit module 6m as in the previous embodiment was produced, sandwiched by thin glass 20 (thickness 0.3mm) on both sides of the EVA resin sheet 6b, heated, softened and melted at a temperature of about 100°C. About 150 ℃ polymerization curing (crosslinking). In the same manner as in Example 1, the solar cell module 6A thus produced (about 130 mm in length and width, and 3 mm in thickness) was inserted so as to be sandwiched between the open end 3 a and the open end 3 a of the pair of glass molded bodies 3 . The state of the glass brick 1A with power generation function is obtained. This glass brick 1A with power generation function can also exert the same function and effect as the glass brick 1 with power generation function of Example 1.

Modifications of the above-described second embodiment will be described. Instead of the sheet glass 20, a sheet or film made of polyester resin, acrylic resin, or polycarbonate resin may also be used. Furthermore, instead of the EVA resin 6b, PVB resin (polyvinyl butyral), ionomer resin, and silicone resin may also be used. In addition, a sheet made of thermosetting silicone resin and polyethylene naphthalate can also be used according to these combinations.

Example 3 The glass brick 1B with the power generation function of Example 3 will be described based on FIGS. 12 and 13 . In addition, the same code|symbol is attached|subjected to the same structural member as Example 1, and description is abbreviate|omitted. In particular, a pair of glass molded bodies 3, a silicone rubber 7 for joining these, a glass brick body 2, and a sealing material 9 made of epoxy resin that hermetically seals and reinforces the outer peripheral surface of the glass brick body 2 are the same as in Example 1. same.

The solar cell module 6B is formed in a state of being joined to the bottom surface of the concave portion 4a of the glass molded body 3 on one side. At this time, the EVA resin sheet 6b, the connection circuit module 6m, the EVA resin sheet 6b, and the sheet glass 20 (for example, the vertical and horizontal dimensions are 115 mm, and the thickness is 0.3 mm) are layered on the bottom area of the concave portion 4a, and they are placed in an environment of 0.6 atmospheric pressure. The EVA resin sheet 6b was melted by heating and pressure, and the solar cell module 6B in the state in which the connection circuit module 6m was embedded in the EVA resin sheet 6b was produced.

Next, as in Example 1, the pair of output extraction positive terminals 17 and the pair of output extraction negative terminals 18 were brought out to the outside, and the open ends 3a of the pair of glass molded bodies 3 were separated from each other in an environment of 0.6 atmosphere. It is hermetically sealed with silicone rubber 7 to become a glass brick body 2 . Then, the epoxy resin 9 is applied to the outer peripheral surface of the square groove 8 of the glass tile body 2, and heat-hardened, and the bonding strength and airtightness of the glass molded bodies 3 are strengthened.

In the glass brick 1B with power generation function of this Example 3, since the solar cell module 6B is attached to the bottom surface of the glass molded body 3, the inner space of the glass brick body 2 is one, and the structure is suitable for cost reduction. This glass brick 1B with power generation function also exhibits the same functions and effects as the glass brick 1 with power generation function of Example 1.

Industrial availability A glass brick with power generation function is provided, and a solar cell module is incorporated into a general glass brick.

1, 1A, 1B: Glass bricks with power generation function 2: glass brick body 3: Glass molding 4: Internal space 4a: Recess 5: Spherical solar cell unit 6, 6A, 6B: Solar cell module 6m: Connect the circuit module 6a: Acrylic resin 6b: EVA resin 6h: Air vent 7: Silicone rubber 9: epoxy resin 17: Output take out positive terminal 18: The output takes out the negative terminal 20: sheet glass

FIG. 1 is a perspective view of a glass brick with power generation function according to Example 1 of the present invention. FIG. 2 is a cross-sectional view of a glass brick with power generation function. Fig. 3 is a longitudinal sectional view of a glass brick with power generation function. 4 is a partial top view of a connection circuit module for connecting a plurality of spherical solar cells in series and in parallel. FIG. 5 is a partial top view of a solar cell module formed by molding the aforementioned connection circuit module with acrylic resin. FIG. 6 is an enlarged view of part A of FIG. 5 . Fig. 7 is an enlarged cross-sectional view of a spherical solar cell. FIG. 8 is an explanatory diagram showing symbols of a circuit diagram of a spherical solar cell. Figure 9 is a portion of a circuit diagram of a solar cell module. FIG. 10 is an explanatory diagram illustrating an example of incident light to a glass tile having a power generating function. 11 is a longitudinal cross-sectional view of the glass brick with power generation function of Example 2. FIG. 12 is a cross-sectional view of the glass brick with power generation function of Example 3. FIG. FIG. 13 is a longitudinal cross-sectional view of the glass brick with power generation function of FIG. 12 .

1: Glass brick with power generation function

2: glass brick body

3: Glass molding

3a: open end

3b: Light penetrates the wall

3c: Peripheral wall portion

4: Internal space

4a: Recess

5: Spherical solar cell unit

6: Solar cell module

6a: Acrylic resin

6m: Connect the circuit module

7: Silicone rubber

8: Square slot

9: Sealing material

17: Output take out positive terminal

18: The output takes out the negative terminal

Claims (3)

A glass brick with power generation function is characterized in that it has: A glass brick body, which joins the open ends of a pair of box-shaped light-transmitting glass forming bodies to each other and forms an inner space; A solar cell module, which is a solar cell module formed by burying a plurality of spherical solar cell units in a synthetic resin material with light permeability, and is sandwiched by the open ends of the pair of glass moldings. The outer peripheral portion of the solar cell module is inserted into the inner space; and an output take-out terminal, which is connected to the output terminal of the solar cell module and extends to the outside of the glass brick body; The solar cell module has a mesh-shaped connection circuit module in which the plurality of spherical solar cells are connected in series and in parallel, and the mesh-shaped connection circuit module is embedded in the synthetic resin material to form a flat plate-shaped connection circuit module. solar cell module; The flat-plate-shaped solar cell module is arranged so that the inner space is divided into two parts, and a ventilation hole is formed in the solar cell module. The glass brick having a power generating function according to claim 1, wherein the open ends of the pair of glass molded bodies are in a state of sandwiching the output extraction terminal, and the open ends of the pair of glass molded bodies are joined to each other using an elastic sealing material . The glass brick with power generation function according to claim 1, wherein the glass forming body has a light penetrating wall portion with light energy entering/exiting from the inner space, The solar cell module is fixed to the inner surface of the light-transmitting wall portion of the glass forming body on one side.

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