JP2001152631A - Solar heat hybrid panel and building provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar heat hybrid panel which can be relaxed with respect to warping and residual stresses thereof, and to provide a building which is provided with the solar heat hybrid panel. SOLUTION: This solar heat hybrid panel M is comprised of a solar battery module 1 and a heat collection panel 2A having a heating medium channel R attached thereto, and constituted by superposing the heat collecting panel 2A on a rear side of the solar battery module 1. The heating medium channel R is formed of a single continuous channel having no bifurcation. Furthermore, the heat collecting panel 2A is constituted of small heat collection plates 4A which are formed by dividing the entire panel 2A with parting lines each which intersects with the heating medium channel R without cutting the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photothermal hybrid panel in which a heat collecting panel is laminated on the back of a solar cell module, and a building including the same.

[0002]

2. Description of the Related Art In recent years, as global environmental problems and energy depletion problems due to increased consumption of fossil fuels have become more serious, panel-shaped solar cell modules have been installed on roofs of houses and the like to provide clean solar cells. Residential solar power generation system that extracts electricity directly from energy and supplies it to the house, or a residential solar heating system that also installs a panel-shaped heat collecting plate on the roof to capture solar energy and use it as a heat source for heating, etc. And other solar energy utilization systems are drawing attention.

Conventionally, for example, as described in Japanese Utility Model Laid-Open No. 4-125163, by integrating a solar cell module and a heat collecting panel, the solar rays are effectively used from both light energy and heat energy. There is known a photothermal hybrid panel which can be used for a vehicle.
The photothermal hybrid panel described in the above publication is a solar cell module in which a transparent plate made of tempered glass or the like, a solar cell module provided with an adhesive layer also serving as an insulator on both sides of a solar cell connected by lead wires are provided from the solar surface side. The thermal panels are stacked in this order.

[0004]

In the light-heat hybrid panel described in the above publication, since a transparent plate made of tempered glass or the like, a solar cell module and a heat collecting panel are integrally formed, they are heated. Laminate under pressure, then cool the laminate to room temperature. that time,
Residual distortion occurs due to the difference in the coefficient of thermal expansion between a heat collecting panel provided with a heat collecting plate made of an aluminum plate or the like having excellent thermal conductivity and a transparent plate made of a tempered glass or the like. For this reason, the entire photothermal hybrid panel may be warped, or excessive residual stress may be generated between the heat collecting panel and the transparent plate, and the solar cell may be broken.

The present invention has been made in view of the above problems, and has as its object to provide a photothermal hybrid panel capable of reducing warpage and residual stress, and a building including the same.

[0006]

According to a first aspect of the present invention, there is provided a solar battery module comprising: a solar cell module; and a heat collecting panel provided with a heat medium passage. A photothermal hybrid panel laminated on the back side of the battery module, wherein the heat medium flow path is formed by a continuous flow path without branching, and the heat collection panel cuts the heat without cutting the heat medium flow path. It is characterized in that a small heat collecting plate divided by a dividing line intersecting with the medium flow path is provided.

According to a second aspect of the present invention, there is provided a solar cell module, and a heat collecting panel in which a plurality of parallel heating medium pipes are heat conductively attached to a heat collecting plate, wherein the heat collecting panel is a solar cell module. Wherein the heat collecting plate comprises a plurality of small heat collecting plates divided by a dividing line intersecting with a tube axis of the heat medium pipe. .

[0008] The invention described in claim 3 is claim 1 or 2.
The above-described light-heat hybrid panel is characterized in that the small heat collecting plate has a substantially rectangular shape in plan view, and is arranged with its long side directed in a direction substantially orthogonal to the tube axis direction of the heat medium pipe.

According to a fourth aspect of the present invention, in the photothermal hybrid panel according to any one of the first to third aspects,
The small heat collecting plate and the adjacent small heat collecting plate are connected by a low moisture permeable body attached across the solar cell module and attached to the opposite side, and the small heat collecting plate and the adjacent small heat collecting plate are connected to each other. It is characterized in that the gap is sealed.

According to a fifth aspect of the present invention, there is provided a building, wherein the photothermal hybrid panel according to any one of the first to fourth aspects is mounted on a roof.

According to the first aspect of the present invention, the heat medium flow path is formed by a continuous pipe line without branching, and the heat collecting panel is formed on the small heat collecting plate without cutting the heat medium flow path. Since the heat collection panel is divided, the residual strain generated at the time of lamination is dispersed by the division of the heat collecting panel, so that warpage and residual stress can be reduced.

In the invention according to claim 2, the heat collecting plate is
Since the heat collecting pipe is composed of a plurality of small heat collecting plates divided by a dividing line intersecting with the pipe axis of the heat medium pipe, residual strain generated at the time of lamination is dispersed by the division of the heat collecting plates, and warpage and residual stress are reduced. it can. That is, since the heat collecting plate is divided in the tube axis direction of the heat medium pipe, the flat plate portion becomes discontinuous, and the residual strain can be dispersed. In addition, since the heat collecting plate is provided with a concave groove for heat conductively attaching the heat medium pipe, the cross section of the heat collecting plate is formed by the concave groove in a direction orthogonal to the pipe axis of the heat medium pipe. However, an irregular cross section in which the flat plate portion is discontinuous can be obtained, and the residual strain can be dispersed.

According to the third aspect of the present invention, the small heat collecting plate has a substantially rectangular shape in a plan view, and the long side thereof is arranged in a direction substantially perpendicular to the tube axis direction of the heat medium pipe. Therefore, warpage and residual stress can be further reduced.

[0014] In the invention according to claim 4, the small heat collecting plate and the adjacent small heat collecting plate are further connected by a low moisture-permeable member which is attached across the side opposite to the solar cell module, Since the gap between the small heat collecting plate and the adjacent small heat collecting plate is sealed, the low moisture-permeable member prevents the adhesive from leaking from the gap. As a result, there is no possibility that the lead wire connecting the solar cells and the heat collection panel are short-circuited or short-circuited, and the power generation is not stopped. In addition, since the low moisture permeable body prevents moisture and heat medium from entering through the gap of this small heat collecting plate,
Deterioration of the adhesive such as discoloration and deterioration is eliminated, and lead wire corrosion is eliminated. The adhesive is used to seal the solar cell and simultaneously bond the solar cell module and the heat collecting panel at the time of lamination, and is a sheet-like adhesive such as ethylene-vinyl acetate copolymer (EVA). Is used.

According to the fifth aspect of the present invention, since the photothermal hybrid panel according to any one of the first to fourth aspects is mounted on a roof, the heat of the heat collecting panel can be efficiently extracted. It is a very ideal building with high efficiency of light-heat hybrid panel.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. (Example 1-Photothermal hybrid panel) Example 1 is an embodiment of the photothermal hybrid panel according to the present invention.
This will be described with reference to FIGS. 1 is an exploded perspective view of the photothermal hybrid panel, FIG. 2A is a perspective view of the heat collecting plate, FIG. 2B is a cross-sectional view taken along line XX of FIG. 3A is a cross-sectional view in the YY selection of FIG. 3A, FIG. 3A is a perspective view of the photothermal hybrid panel shown in FIG. 1 in an assembled state, and FIG. 3B is A of FIG.
It is sectional drawing in the -A line.

The photothermal hybrid panel M of this embodiment is
As shown in FIG. 1, a solar cell module 1 and a heat collecting panel 2 are laminated, and the periphery of this laminated body is integrally formed by RIM molding or the like as shown in FIG. The back side of the laminate is surrounded by a resin
Covered with. 8 in FIG. 3 is a cable,
One end of the cable 8 is connected to a terminal box 83 provided on the back side of the heat collection panel 2, and a connector (plus) 81 and a connector (minus) 82 are attached to the other end of the cable 8. Thereby, the electric energy generated by the solar cell module 1 can be taken out.

In the solar cell module 1, a plurality of solar cells 11, 11,...
(Ethylene-vinyl acetate copolymer), each solar cell 11 is connected by a lead wire (not shown), and is covered with a sheet adhesive 13 (ethylene-vinyl acetate copolymer). Then, the sheet adhesives 12 and 13 are melted to seal the solar cell 11 so that moisture or the like does not enter therein, and the tempered glass 14 is attached to the surface with the same sheet adhesive 12. The solar cell 11 is made of single-crystal silicon, polycrystalline silicon, amorphous silicon, a compound semiconductor, or the like.

The heat collecting panel 2 is composed of a heat collecting plate 3 and a plurality of parallel copper heating medium pipes 5, 5,... The solar cell module 1 is laminated on the back side via the sheet-like adhesive 13. The two ends of the heat medium pipes 5, 5,... Protruding from the heat collecting plate 3 are connected to through holes provided on the side surfaces of the copper header pipes 6, 6, respectively. Here, the solar cell module 1 and the heat collecting plate 3
The above-mentioned sheet adhesive 12 is melted, and the solar cell 1 is melted.
1 are integrated when sealing. The heat medium pipe 5 forms a heat medium passage.

In the photothermal hybrid panel M configured as described above, the heat collecting plate 3 is composed of a plurality of small heat collecting plates 4, 4, 4 and 4 divided by a dividing line orthogonal to the tube axis of the heat medium pipe 5.
The small heat collecting plate 4 is arranged on the substantially same plane as a whole. The small heat collecting plate 4 is made of aluminum, has a rectangular shape in plan view, and has a long side arranged in a direction orthogonal to the tube axis direction of the heat medium pipe 5. Also,
An appropriate gap S is provided between adjacent small heat collecting plates 4.

As shown in FIG. 2, the small heat collecting plate 4 to which the heat medium pipes 5, 5,... Are attached has a plurality of semicircular concave grooves 42, 42,.・ Is provided. That is, the small heat collecting plate 4 has the concave groove 42,
The flat plate portions 41 are formed alternately. The heat medium pipe 5 having a semicircular insertion portion is inserted into the concave groove 42, and as shown in FIG. 3B, the surface of the small heat collecting plate 4 on the solar cell module 1 side. Are made substantially flush. The concave grooves 42 and the heat medium pipes 5 are tightly fixed at their outer peripheral surfaces by caulking or the like, so that the heat medium pipes 5 are in contact with the small heat collecting plate 4 in heat transfer.

Further, the small heat collecting plate 4 and the adjacent small heat collecting plate 4 are connected by a low moisture permeable body 7 which is attached to the opposite side of the solar cell module 1 and attached thereto. The gap S between the plate 4 and the adjacent small heat collecting plate 4 is sealed. The low moisture permeable member 7 is an aluminum adhesive tape having an adhesive layer provided on the surface of an aluminum foil substrate.

The heat medium pipe 5 is made of copper having high heat conductivity, but may be made of aluminum or synthetic resin. The heat medium pipe 5 is used by passing a heat medium such as water or antifreeze.

(Operation of the Embodiment) In the first embodiment, the heat collecting plate 3
However, since it is composed of a plurality of small heat collecting plates 4, 4, 4 divided by a dividing line that intersects with the pipe axis of the heat medium pipe 5, specifically, is substantially orthogonal, residual strain generated during lamination is Heat collecting plate 3
And warp and residual stress can be reduced. That is, in the pipe axis direction of the heat medium pipe 5, FIG.
(B) As shown in the figure, the heat collecting plates 3 are small heat collecting plates 4, 4,.
Since it is divided into four, the flat plate portion 41 becomes discontinuous, and the distortion can be dispersed. In the direction perpendicular to the pipe axis of the heat medium pipe 5, as shown in FIG. 2C, the cross-sectional shape of the small heat collecting plate 4 is such that the flat plate portions 41 and the concave grooves 42 are provided alternately. It has an irregular cross-section and can disperse residual strain even if it is long.

In the first embodiment, the small heat collecting plate 4
Are formed in a rectangular shape in a plan view, and are disposed with their long sides directed in a direction orthogonal to the tube axis direction of the heat medium pipe 5, so that warpage and residual stress can be further reduced. Further, since the small heat collecting plate 4 straddles a plurality of heat medium pipes 5 in the long side direction and is fixed to the heat medium pipes 5 at each intersection, the heat medium pipes 5 support the residual stress in the long side direction. Therefore, warping in the long side direction does not occur. In the short side direction, warpage does not occur because little warpage occurs and the gap S can absorb the elongation in the short side direction.

Further, the small heat collecting plate 4 and the adjacent small heat collecting plate 4
Are connected by a low moisture permeable body 7 attached to the opposite side of the solar cell module 1 and attached thereto.
And the gap S between the adjacent small heat collecting plate 4 is sealed,
The low moisture-permeable member 7 prevents the adhesive 13 from leaking from the gap S. As a result, there is no possibility that the lead wire connecting between the solar cells 11 and the heat collection panel 2 is short-circuited or short-circuited, and the power generation is stopped due to short circuit. Further, since the low moisture permeable member 7 prevents moisture or heat medium from entering the gap S of the small heat collecting plate 4, deterioration of the adhesive 13 such as discoloration and deterioration is eliminated, and corrosion of the lead wire is eliminated.

(Embodiment 2-Building) Embodiment 2 is an embodiment of a building to which the photothermal hybrid panel M shown in Embodiment 1 is attached. This will be described with reference to FIG. FIG. 4A is an explanatory view of the building, and FIG. 4B is an enlarged perspective view of a portion B in FIG. In FIG. 4, T is a building, Y is a roof, and H is a heat storage tank.

FIG. 4 shows the roof Y of the building T of this embodiment.
As shown in FIGS. 2A and 2B, a plurality of photothermal hybrid panels M, M,... Shown in the first embodiment are provided in two stages vertically and four in a horizontal direction. ing. Each of the photothermal hybrid panels M is attached to the roof Y with the header tubes 6 on both sides up and down.

The lower header pipes 6 of the photothermal hybrid panel M arranged at the lower stage are connected to each other by a connection joint, and one end thereof is connected to the lower side of the heat storage tank H by an outgoing pipe 61, The header pipe 6 is connected to the lower header pipe 6 of the photothermal hybrid panel M arranged on the upper stage by a U-shaped pipe joint. In addition, the upper header tube 6 of the photothermal hybrid panel M disposed in the upper stage
Are connected to each other by a connection joint, and one end of the
2 is connected to the upper side of the heat storage tank H. Thus, a circulation piping path is formed between the plurality of photothermal hybrid panels M, M,... And the heat storage tank H. The heat storage tank H is provided with a pipe that draws out hot water stored therein and leads it to a bath, a washroom, a kitchen, and the like in the building T, and a pipe that introduces tap water and the like.

(Operation of Embodiment) In the building T of this embodiment,
Since the photothermal hybrid panel M of the first embodiment is attached to the roof Y with the header tubes 6 on both sides up and down, the heat collection panel can be extremely efficiently obtained only by taking out the heat medium of the upper header tube 6. 2 can be taken out, and the efficiency of the photothermal hybrid panel M is high and it is a very ideal building T.

(Embodiment 3) Photothermal Hybrid Panel Embodiment 3 is another embodiment of the photothermal hybrid panel according to the present invention, which will be described with reference to FIGS. 5 and 6. FIG. 5 and 6 are exploded perspective views showing the photothermal hybrid panel. In this embodiment, the same components as those in the above embodiment are denoted by the same reference numerals and description thereof is omitted, and only different components are denoted by different reference numerals.

The photothermal hybrid panel M shown in FIG.
The solar cell module 1 includes a heat collecting panel 2A provided with a heat medium flow path R, and the heat collecting panel 2A is stacked on the back surface of the solar cell module 1. The heat medium flow path R is formed by a single continuous heat medium pipe 5A having no branch, and the heat collecting panel 2A is formed by a dividing line intersecting the heat medium flow path R without cutting the heat medium flow path R. Are divided into five small rectangular heat collecting plates 4A, 4A, and so on.

The heat medium pipe 5A is made of a flexible material, is bent in a zigzag manner, and is arranged so that the direction of the tube axis in the straight portion is the same as the dividing line of the small heat collecting plate 4A. . Note that the heat medium pipe 5A is heat conductively attached to the small heat collecting plate 4A by being closely attached thereto. Of course, the heat medium pipe 5A may be a non-flexible material such as metal. Further, the heat medium passage R may be provided with a through-hole in the small heat collecting plate 4A, and connecting adjacent through-holes with a U-shaped pipe joint or the like to form a continuous pipe line without branching. Good.

The photothermal hybrid panel M shown in FIG.
5 is a modified example of the photothermal hybrid panel M shown in FIG. 5, and differs from the photothermal hybrid panel M in that the heat collecting panel 2 </ b> B has six dividing lines intersecting the heat medium flow path R without cutting the heat medium flow path R. Divided into small rectangular heat collecting plates 4B, 4B,.
This is a point that the tube axis direction in the linear portion of the heat medium pipe 5A bent in a zigzag direction is oriented in a direction orthogonal to the dividing line of the small heat collecting plate 4B.

(Operation of the Embodiment) In this embodiment, the heat medium flow path R is formed by a continuous pipe having no branch made of the heat medium pipe 5A, and the heat collecting panel 2A or 2B Since the path R is divided into the small heat collecting plates 4A or 4B without cutting, the residual strain generated at the time of lamination is dispersed by the division of the heat collecting panels 2A or 2B, so that warpage and residual stress can be reduced.

[0036]

According to the first to third aspects of the present invention, since warpage and residual stress can be reduced, a photothermal hybrid panel having a stable shape can be obtained, and at the same time, destruction of solar cells can be prevented. For this reason, long-term reliability can be ensured.

According to the fourth aspect of the present invention, the low moisture permeable body prevents the adhesive from leaking from the gap between the small heat collecting plates, and the lead wire connecting the solar cells and the heat collecting panel are short-circuited. There is no possibility that power generation will not stop due to power leakage. In addition, since the low moisture permeable member prevents moisture and heat medium from entering through the gaps of the small heat collecting plate, deterioration of the adhesive such as discoloration and deterioration of the adhesive is eliminated, and corrosion of the lead wire is eliminated.

According to the fifth aspect of the present invention, since the photothermal hybrid panel according to any one of the first to fourth aspects is mounted on a roof, the heat of the heat collecting panel can be efficiently extracted. It is a very ideal building with high efficiency of light-heat hybrid panel.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a photothermal hybrid panel according to an embodiment of the present invention.

FIG. 2A is a perspective view of a heat collecting plate, and FIG.
The cross-sectional view taken along the line XX in FIG.
It is sectional drawing in -Y selection.

3A is a perspective view of the photothermal hybrid panel shown in FIG. 1 in an assembled state, and FIG. 3B is a view A of FIG.
It is sectional drawing in the -A line.

FIG. 4 is an embodiment of a building. FIG. 4A is an explanatory view of the building, and FIG. 4B is an enlarged perspective view of a portion B in FIG.

FIG. 5 is an exploded perspective view showing a photothermal hybrid panel according to another embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a photothermal hybrid panel according to another embodiment of the present invention.

[Explanation of symbols]

 M Photothermal hybrid panel 1 Solar cell module 11 Solar cell 12, 13 Adhesive 2, 2A, 2B Heat collecting panel 3 Heat collecting plate 4, 4A, 4B Small heat collecting plate 5, 5A Heat medium pipe 6 Header tube 7 Low permeability Wet body T Building Y Roof R Heat medium flow path

Claims (5)

[Claims] 1. A photothermal hybrid panel comprising: a solar cell module; and a heat collecting panel provided with a heat medium flow path, wherein the heat collecting panel is laminated on a back surface side of the solar cell module. The flow path is formed by a continuous flow path without branching, and the heat collecting panel includes a small heat collecting plate divided by a dividing line crossing the heat medium flow path without cutting the heat medium flow path. It is characterized by a light-heat hybrid panel. 2. A solar cell module comprising: a solar cell module; and a heat collecting panel in which a plurality of parallel heat medium pipes are heat conductively attached to a heat collecting plate, wherein the heat collecting panel is laminated on the back side of the solar cell module. A light-heat hybrid panel, comprising: a plurality of small heat collectors divided by a dividing line intersecting with a tube axis of the heat medium pipe. 3. The heat collecting plate according to claim 1, wherein the small heat collecting plate has a substantially rectangular shape in a plan view, and has a long side thereof oriented in a direction substantially perpendicular to a tube axis direction of the heat medium pipe. Or the photothermal hybrid panel according to 2. 4. The small heat collecting plate and an adjacent small heat collecting plate,
The small heat collecting plate is connected by a low moisture permeable member that is attached to the opposite side of the solar cell module so as to seal the gap between the small heat collecting plate and an adjacent small heat collecting plate. 4. The photothermal hybrid panel according to any one of items 3 to 3. 5. A building, wherein the photothermal hybrid panel according to claim 1 is attached to a roof.