Power generating film module

Abstract

To provide a power generating film module which can increase a power generation amount per unit surface area.SOLUTION: A power generating film module 1 has: a light-receiving surface film 2 for receiving light; an optical power generation layer 3, laminated on a rear surface of the light-receiving surface film 2, which has a photoelectric conversion material for generating power by transmission light that transmits through the light-receiving surface film 2; a pair of positive and negative optical power generation electrodes 7 which extracts generated power from the optical power generation layer 3; a heat conducting intermediate film 4 laminated on a rear surface of the optical power generation layer 3; a thermal power generation layer 5, laminated on a rear surface of the heat conducting intermediate film 4, which has a thermoelectric conversion material for generating power by conductive heat that transfers through the heat conducting intermediate film 4; a pair of positive and negative thermal power generation electrodes 8 which extracts generated power from the thermal power generation layer 5; and a base film 6 laminated on a rear surface of the thermal power generation layer 5.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a film module for power generation, and more particularly to a hybrid film module for power generation that generates power by combining a photovoltaic power generation method and a thermoelectric power generation method.

Background Art

[0002] In recent years, due to the trend of decarbonization, the demand for photovoltaic power generation has been increasing. As photovoltaic elements, not only those using silicon-based crystals that are commonly seen, but also flexible organic-based power generation films that can be arranged along curved roof shapes are known.

[0003] Patent Document 1 proposes a photovoltaic power generation sheet that generates power using sunlight. This photovoltaic power generation sheet includes a plastic backsheet, a plastic or vinyl barrier sheet provided on the opposite side of the backsheet, and a plurality of power generation units provided between the backsheet and the barrier sheet, and has flexibility.

[0004] On the other hand, research on power generation systems using heat has also been progressing, and flexible thermoelectric power generation films have also been proposed.

[0005] Patent Document 2 proposes a thermoelectric power generation film provided with a plurality of thermoelectric modules that convert a temperature difference into electric power. The thermoelectric modules used here include a plurality of p-type thermoelectric elements and a plurality of n-type thermoelectric elements arranged on a flexible base material, and are configured to generate power using the temperature difference between these thermoelectric elements, and have flexibility.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] Power generation film modules such as the photovoltaic sheet proposed in Patent Document 1 and the thermoelectric film proposed in Patent Document 2 are installed in a place having a predetermined area size, and the power generation amount depends on the area size of the place where it can be installed. For this reason, there is a demand for increasing the power generation amount per unit surface area in the power generation film module.

[0008] In view of such points, an object of the present invention is to provide a power generation film module capable of increasing the power generation amount per unit surface area.

Means for Solving the Problems

[0009] The power generation film module according to the present invention includes: a light-receiving surface film for receiving light; a photovoltaic layer laminated on the back surface of the light-receiving surface film and including a photoelectric conversion material that generates electricity by transmitted light transmitted through the light-receiving surface film; a pair of positive and negative photovoltaic electrodes for extracting generated power from the photovoltaic layer; a heat conduction intermediate film laminated on the back surface of the photovoltaic layer; a thermoelectric layer laminated on the back surface of the heat conduction intermediate film and including a thermoelectric conversion material that generates electricity by conduction heat transmitted through the heat conduction intermediate film; a pair of positive and negative thermoelectric electrodes for extracting generated power from the thermoelectric layer; a base film laminated on the back surface of the thermoelectric layer; and is characterized by having the above.

[0010] Further, in the power generation film module according to the present invention, the heat conduction intermediate film includes an intermediate film on the photovoltaic layer side laminated on the back surface of the photovoltaic layer, and an intermediate film on the thermoelectric layer side laminated on the surface of the thermoelectric layer. An adhesive layer that bonds the intermediate film on the photovoltaic layer side and the intermediate film on the thermoelectric layer side, may be configured to be provided.

[0011] At that time, the adhesive layer is preferably a layer of an epoxy-based adhesive having insulation and heat resistance.

[0012] In addition, in the power generation film module according to the present invention, each of the light-receiving surface film, the heat-conducting intermediate film, and the base film has the same contour shape, and are laminated with their contour shapes aligned with each other, The photovoltaic layer and the thermoelectric layer are formed in a rectangular contour shape sized to fit inside the contour of the film, A pair of positive and negative photovoltaic electrodes has the positive photovoltaic electrode and the negative photovoltaic electrode drawn from separate opposing edges of the photovoltaic layer, A pair of positive and negative thermoelectric electrodes is preferably such that, at a position separated from the pair of positive and negative photovoltaic electrodes, the positive thermoelectric electrode and the negative thermoelectric electrode are drawn from separate opposing edges of the thermoelectric layer.

[0013] In addition, the power generation film module according to the present invention preferably has flexibility that allows it to bend in the out-of-plane direction.

[0014] In addition, in the power generation film module according to the present invention, the photovoltaic part composed of the light-receiving surface film, the photovoltaic layer, the photovoltaic electrodes, and the heat-conducting intermediate film is an organic thin-film solar cell or a perovskite solar cell, The thermoelectric part composed of the heat-conducting intermediate film, the thermoelectric layer, the thermoelectric electrodes, and the base film is preferably an n-type thermoelectric film.

Advantages of the Invention

[0015] According to the power generation film module of the present invention, the power generation amount per unit surface area can be increased.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0017] FIG. 1 is a plan view of a film module 1 for power generation according to an embodiment, and FIG. 2 is a schematic cross-sectional view obtained by expanding the cross-section (A-A cross-section of FIG. 1) in the thickness direction. Hereinafter, with reference to these figures, the film module 1 for power generation will be described.

[0018] (Overall Configuration) The film module 1 for power generation is a thin film module that receives light energy such as sunlight on a plane surface and converts the light energy into electrical energy for power generation.

[0019] As shown in FIGS. 1 and 2, this power generation film module 1 is a film-shaped (also referred to as sheet-shaped) module formed by laminating thin members or layers that spread out planarly. It has a light-receiving surface film 2, a photovoltaic layer 3, a heat-conducting intermediate film 4, a thermoelectric generation layer 5, and a base film 6 that are laminated in order in one direction with their surfaces joined together. Further, the power generation film module 1 is capable of generating electricity in the photovoltaic layer 3 and the thermoelectric generation layer 5. To extract the generated electric power, it has a pair of positive and negative photovoltaic electrodes 7 drawn from the photovoltaic layer 3 and a pair of positive and negative thermoelectric generation electrodes 8 drawn from the thermoelectric generation layer 5. Note that the light-receiving surface film 2, the heat-conducting intermediate film 4, and the base film 6 have the same size contour shape and define the contour shape of the power generation film module 1. In this specification, for each part, in a state where the base film 6 is placed downward in the horizontal plane, the upper surface is described as the front surface and the lower surface as the back surface.

[0020] (Component Configuration) The light-receiving surface film 2 is a thin resin film and has a rectangular contour shape. The light-receiving surface film 2 is arranged in the uppermost layer to receive light and is exposed to the outside during installation. The light-receiving surface film 2 has flexibility that allows it to bend in the out-of-plane direction. The material of the light-receiving surface film 2 has light-transmitting and insulating properties, and is also excellent in weather resistance, heat resistance, water resistance, flame retardancy, etc. As an example, polyester resins such as polyethylene terephthalate (PET) or fluoroplastics such as ethylene tetrafluoroethylene (ETFE) can be adopted.

[0021] The photovoltaic layer 3 is formed in a rectangular contour shape that is slightly smaller than the contour shape of the light-receiving surface film 2, and is laminated on the back surface of the light-receiving surface film 2 and inside the contour of the light-receiving surface film 2. The photovoltaic layer 3 includes a photoelectric conversion material that generates electricity by transmitted light passing through the light-receiving surface film 2. The photovoltaic layer 3 has flexibility that allows it to bend in the out-of-plane direction. As an example, this photoelectric conversion material is an organic substance processed as a thin-film semiconductor combined with a conductive polymer, fullerene, etc. Or, there is also a type that obtains a photovoltaic effect using an organic dye. As another example, a perovskite compound is adopted.

[0022] The intermediate film 4 for heat conduction is laminated on the back surface of the photovoltaic layer 3. The intermediate film 4 for heat conduction includes an intermediate film 41 on the photovoltaic layer side laminated on the back surface of the photovoltaic layer 3, an intermediate film 42 on the thermoelectric layer side laminated on the surface of the thermoelectric layer 5 described later, and an adhesive layer 43 that bonds the intermediate film 41 on the photovoltaic layer side and the intermediate film 42 on the thermoelectric layer side.

[0023] The intermediate film 41 on the photovoltaic layer side is a thin resin film and has the same contour shape as the light-receiving surface film 2. The intermediate film 41 on the photovoltaic layer side aligns with the light-receiving surface film 2 in terms of their contour shapes, sandwiches the photovoltaic layer 3, and is laminated, and is in close contact with the light-receiving surface film 2 in the region outside the photovoltaic layer 3. The intermediate film 41 on the photovoltaic layer side has flexibility that allows it to bend in the out-of-plane direction. The material of the intermediate film 41 on the photovoltaic layer side has heat conductivity and insulation properties, and is also excellent in weather resistance, heat resistance, water resistance, flame retardancy, etc. As an example, polyester resins such as polyethylene terephthalate (PET) can be adopted.

[0024] The intermediate film 42 on the thermoelectric layer side is a thin resin film and has the same contour shape as the intermediate film 41 on the photovoltaic layer side. The intermediate film 42 on the thermoelectric layer side aligns its contour shape with that of the intermediate film 41 on the photovoltaic layer side and is adhesively fixed to the intermediate film 41 on the photovoltaic layer side via the adhesive layer 43 described later. The intermediate film 42 on the thermoelectric layer side has flexibility that allows it to bend in the out-of-plane direction. The material of the intermediate film 42 on the thermoelectric layer side has thermal conductivity and insulation properties, and is also excellent in weather resistance, heat resistance, water resistance, flame retardancy, etc. As an example, polyester resins such as polyimide (PI) resin and polyethylene terephthalate (PET) can be adopted.

[0025] The adhesive layer 43 is a layer formed by applying and curing an adhesive capable of strongly adhering the intermediate film 41 on the photovoltaic layer side and the intermediate film 42 on the thermoelectric layer side between the intermediate film 41 on the photovoltaic layer side and the intermediate film 42 on the thermoelectric layer side. The adhesive layer 43 is preferably a layer of an epoxy-based adhesive for film adhesion having thermal conductivity, flexibility, insulation properties, and heat resistance.

[0026] The thermoelectric layer 5 is formed in a rectangular contour shape that is slightly smaller than the contour shape of the intermediate film 4 for heat conduction and is laminated on the back surface of the intermediate film 4 for heat conduction and inside the contour of the intermediate film 4 for heat conduction. The thermoelectric layer 5 is provided with a thermoelectric conversion material that generates electricity by the conductive heat transmitted through the intermediate film 4 for heat conduction. The thermoelectric layer 5 has flexibility that allows it to bend in the out-of-plane direction. As this thermoelectric conversion material, for example, a fluid in which metal nanoparticles such as platinum are dispersed in an n-type semiconductor material is adopted.

[0027] The base film 6 is laminated on the back surface of the thermoelectric generation layer 5. The base film 6 is a thin resin film and has the same contour shape as the intermediate film 4 for heat conduction. The base film 6 aligns its contour shape with the intermediate film 42 on the thermoelectric generation layer side of the intermediate film 4 for heat conduction, sandwiches the thermoelectric generation layer 5, and is in close contact with the intermediate film 42 in the region outside the thermoelectric generation layer 5. The base film 6 is arranged in the lowermost layer for placement at the installation location and is in close contact with the installation location during installation. The material of the base film 6 has insulation properties and is also excellent in weather resistance, heat resistance, water resistance, flame retardancy, etc. As an example, polyester resins such as polyimide (PI) resin and polyethylene terephthalate (PET) can be adopted.

[0028] A pair of positive and negative photovoltaic electrodes 7 are defined as a positive photovoltaic electrode 7a on one side and a negative photovoltaic electrode 7b on the other side. They are connected to the photovoltaic layer 3 and are electrodes for extracting generated electric power from the photovoltaic layer 3 to the outside of the film. As shown in FIG. 1, for the pair of positive and negative photovoltaic electrodes 7, the positive photovoltaic electrode 7a is drawn out from one of the opposing edges of the photovoltaic layer 3 (the upper side of the right edge in FIG. 1), and the negative photovoltaic electrode 7b is drawn out from the other opposing edge of the photovoltaic layer 3 (the upper side of the left edge in FIG. 1), and the electrodes are configured to be difficult to short-circuit.

[0029] A pair of positive and negative thermoelectric generation electrodes 8 are defined as a positive thermoelectric generation electrode 8a on one side and a negative thermoelectric generation electrode 8b on the other side. They are connected to the thermoelectric generation layer 5 and are electrodes for extracting generated electric power from the thermoelectric generation layer 5 to the outside of the film. As shown in FIG. 1, for the pair of positive and negative thermoelectric generation electrodes 8, at a position away from the pair of positive and negative photovoltaic electrodes 7, the positive thermoelectric generation electrode 8a is drawn out from one of the opposing edges of the thermoelectric generation layer 5 (the lower side of the left edge in FIG. 1), and the negative thermoelectric generation electrode 8b is drawn out from the other opposing edge of the thermoelectric generation layer 5 (the lower side of the right edge in FIG. 1), and the electrodes are configured to be difficult to short-circuit.

[0030] In the power generation film module 1 configured as described above, as shown in FIG. 2, it is composed of a light-receiving surface film 2, a photovoltaic layer 3, a pair of positive and negative photovoltaic electrodes 7 for extracting photovoltaic power, and an intermediate film 41 on the photovoltaic layer side of the intermediate film 4 for heat conduction. It includes a photovoltaic section 1A that converts light energy into electrical energy, and an intermediate film 42 on the thermoelectric layer side of the intermediate film 4 for heat conduction, a thermoelectric layer 5, a thermoelectric electrode 8, and a base film 6. It is configured to convert the heat energy generated by light energy into electrical energy, and a thermoelectric section 1B. In the power generation film module 1, the photovoltaic section 1A is an organic thin-film solar cell or a perovskite solar cell, and the thermoelectric section 1B is an n-type thermoelectric film. In this power generation film module 1, the upper photovoltaic section 1A receives sunlight and converts part of its light energy into electrical energy in the photovoltaic layer 3, and the light energy received in excess of that converted into electrical energy causes it to become hot. Then, in this power generation film module 1, the lower thermoelectric section 1B converts part of the heat energy in the photovoltaic section 1A that has become hot and is transmitted through the intermediate film 4 for heat conduction into electrical energy in the thermoelectric layer 5. That is, in this power generation film module 1, photovoltaic power generation in the photovoltaic layer 3 and thermoelectric power generation in the thermoelectric layer 5 are performed from the sunlight received on the surface area of the light-receiving surface film 2. Also, this power generation film module 1 has flexibility such that the light-receiving surface film 2, the photovoltaic layer 3, the intermediate film 4 for heat conduction, the thermoelectric layer 5, and the base film 6 can be bent in the out-of-plane direction, and thus it also has flexibility to be bent in the out-of-plane direction.

[0031] (Manufacturing Method) FIG. 3 is a flowchart showing the manufacturing method of the power generation film module 1. Subsequently, with reference to FIG. 3 as well, the manufacturing method of the power generation film module 1 will be described.

[0032] As shown in FIG. 3, the power generation film module 1 is manufactured by performing the photovoltaic section manufacturing process ST1 and the thermoelectric section manufacturing process ST2 in any order and then performing the pasting process ST3.

[0033] In the photovoltaic cell manufacturing process ST1, first, a photovoltaic conversion material is applied or disposed within a range slightly inside the contour of the intermediate film 41 on the photovoltaic cell layer side on the surface of the intermediate film 41 on the photovoltaic cell layer side, and the photovoltaic cell layer 3 is laminated. Subsequently, a surface fastener or an adhesive for bonding is disposed at least in the range around the photovoltaic cell layer 3 on the surface of the intermediate film 41 on the photovoltaic cell layer side, and the light-receiving surface film 2 is disposed in close contact with the surface of the photovoltaic cell layer 3 so as to align the contour positions with the intermediate film 41 on the photovoltaic cell layer side. Thereby, the intermediate film 41 on the photovoltaic cell layer side and the light-receiving surface film 2 sandwich the photovoltaic cell layer 3 therebetween, and at least the edges are in close contact and integrated, and the photovoltaic cell unit 1A is manufactured. Incidentally, conversely, the photovoltaic cell unit 1A may be manufactured by laminating based on the light-receiving surface film 2.

[0034] In the thermoelectric power generation unit manufacturing process ST2, first, a thermoelectric conversion material is applied or disposed within a range slightly inside the contour of the base film 6 on the surface of the base film 6, and the thermoelectric power generation layer 5 is laminated. Subsequently, a surface fastener or an adhesive for bonding is disposed at least in the range around the thermoelectric power generation layer 5 on the surface of the base film 6, and the intermediate film 42 on the thermoelectric power generation layer side is disposed in close contact with the surface of the thermoelectric power generation layer 5 so as to align the contour positions with the base film 6. Thereby, the base film 6 and the intermediate film 42 on the thermoelectric power generation layer side sandwich the thermoelectric power generation layer 5 therebetween, and at least the edges are in close contact and integrated, and the thermoelectric power generation unit 1B is manufactured. Incidentally, conversely, the thermoelectric power generation unit 1B may be manufactured by laminating based on the intermediate film 42 on the thermoelectric power generation layer side.

[0035] In the pasting process ST3, first, an epoxy-based adhesive for film bonding for forming the adhesive layer 43 is applied to the entire surface (the surface of the intermediate film 42 on the thermoelectric power generation layer side) of the thermoelectric power generation unit 1B manufactured in the thermoelectric power generation unit manufacturing process ST2. Subsequently, the photovoltaic cell unit 1A manufactured in the photovoltaic cell manufacturing process ST1 is disposed in close contact with the surface of the thermoelectric power generation unit 1B so as to align the contour positions with the thermoelectric power generation unit 1B. Thereby, the thermoelectric power generation unit 1B and the photovoltaic cell unit 1A are integrated via the adhesive layer 43, and the power generation film module 1 is manufactured. Incidentally, conversely, the power generation film module 1 may be manufactured by laminating based on the photovoltaic cell unit 1A.

[0036] (Function and Effect) The power generation film module 1 includes a light-receiving surface film 2, a photoelectric conversion layer 3 provided with a photoelectric conversion material that generates electricity by transmitted light passing through the light-receiving surface film 2, a heat conduction intermediate film 4 laminated on the back surface of the photoelectric conversion layer 3, and a thermoelectric conversion layer 5 laminated on the back surface of the heat conduction intermediate film 4 and provided with a thermoelectric conversion material that generates electricity by the conduction heat transmitted through the heat conduction intermediate film 4, and a base film 6 laminated on the back surface of the thermoelectric conversion layer 5. According to the power generation film module 1, since it has such a laminated structure, as described above, by the light energy received by the light-receiving surface film 2, a part of the light energy can be used for photoelectric power generation in the photoelectric conversion layer 3, and the heat generated by being heated by the light energy is transmitted to the thermoelectric conversion layer 5 through the heat conduction intermediate film 4, and thermoelectric power generation can be performed. That is, according to the power generation film module 1, not only photoelectric power generation but also thermoelectric power generation can be performed from the light energy received in the predetermined area range of the light-receiving surface film 2, and the power generation amount can be increased. And, according to the power generation film module 1, since it has a pair of positive and negative photoelectric power generation electrodes 7 for extracting the generated power from the photoelectric conversion layer 3 and a pair of positive and negative thermoelectric power generation electrodes 8 for extracting the generated power from the thermoelectric conversion layer 5, the power obtained by photoelectric power generation and the power obtained by thermoelectric power generation can be respectively extracted from the photoelectric power generation electrodes 7 and the thermoelectric power generation electrodes 8.

[0037] Therefore, the power generation film module 1 is a power generation film module capable of increasing the power generation amount per unit surface area.

[0038] Further, in the power generation film module 1, the heat conduction intermediate film 4 includes a photovoltaic layer side intermediate film 41 laminated on the back surface of the photovoltaic layer 3, a thermoelectric generation layer side intermediate film 42 laminated on the surface of the thermoelectric generation layer 5, and an adhesive layer 43 which is a layer of an epoxy-based adhesive having insulation and heat resistance and bonding the photovoltaic layer side intermediate film 41 and the thermoelectric generation layer side intermediate film 42. By dividing the heat conduction intermediate film 4 into the photovoltaic layer side intermediate film 41 and the thermoelectric generation layer side intermediate film 42, the photovoltaic part 1A composed of the light-receiving surface film 2, the photovoltaic layer 3, the photovoltaic electrode 7, and the heat conduction intermediate film 4 can be manufactured using the photovoltaic layer side intermediate film 41 as the heat conduction intermediate film 4, and the thermoelectric generation part 1B composed of the heat conduction intermediate film 4, the thermoelectric generation layer 5, the thermoelectric generation electrode 8, and the base film 6 can be manufactured using the thermoelectric generation layer side intermediate film 42 as the heat conduction intermediate film 4. Therefore, if configured like the power generation film module 1, the photovoltaic part 1A and the thermoelectric generation part 1B can be manufactured in parallel, and can be manufactured efficiently.

[0039] Further, according to the power generation film module 1, for a pair of positive and negative photovoltaic electrodes 7, the positive photovoltaic electrode 7a and the negative photovoltaic electrode 7b are drawn out from separate opposing edges of the photovoltaic layer 3, and for a pair of positive and negative thermoelectric generation electrodes 8, at positions separated from the pair of positive and negative photovoltaic electrodes 7, the positive thermoelectric generation electrode 8a and the negative thermoelectric generation electrode 8b are drawn out from separate opposing edges of the thermoelectric generation layer 5. Therefore, the risk of short circuit between the electrodes can be reduced.

[0040] In addition, the power generation film module 1 has flexibility that allows it to bend in the out-of-plane direction. Specifically, the photoelectric generation unit 1A is configured as an organic thin-film solar cell or a perovskite solar cell, and the thermoelectric generation unit 1B is configured as an n-type thermoelectric film. Since an organic thin-film solar cell or a perovskite solar cell can efficiently perform photoelectric generation, and an n-type thermoelectric film can generate electricity using thermal energy even without a temperature difference, a cooling structure such as cooling the installation location is unnecessary. The organic thin-film solar cell, the perovskite solar cell, and the n-type thermoelectric film can be configured as very lightweight and flexible films. Therefore, according to the power generation film module 1, not only can the power generation efficiency be increased, but the construction can also be easily carried out. The power generation film module 1 is, for example, suitable for use in a solar power generation system as it can be easily installed on the roof of a building.

[0041] [Other forms] As described above, the present invention has been described based on the above embodiments, but the present invention is not limited to the above embodiments. It can be implemented in various aspects without departing from the gist thereof. For example, the following modifications are possible.

[0042] (1) The number, material, shape, position, size, etc. of the components described in the above embodiments are examples, and can be changed without impairing the effects of the present invention.

[0043] (2) In the above-described embodiments, the contour shapes of the respective films 2, 4, 6 and the respective power generation layers 3, 5 have been described as being rectangular, but the present invention is not limited thereto. The contour shapes of the respective films and the respective power generation layers may be set as appropriate, and may be, for example, circular.

[0044] (3) In the above-described embodiments, the intermediate film 4 for heat conduction was described as having a structure in which the intermediate film 41 on the photovoltaic layer side and the intermediate film 42 on the thermoelectric generation layer side are pasted together. However, the present invention is not limited to this. The intermediate film for heat conduction may be a single-layer structure that also serves as the lowermost layer of the photovoltaic section 1A and the uppermost layer of the thermoelectric generation section 1B.

[0045] (4) In the above-described embodiments, the pair of positive and negative photovoltaic electrodes 7 and the pair of positive and negative thermoelectric generation electrodes 8 were described such that the positive and negative electrodes are drawn out in different directions. However, the present invention is not limited to this. For example, the pair of positive and negative photovoltaic electrodes and the pair of positive and negative thermoelectric generation electrodes may be drawn out in the same direction. In this case, in order to reduce the risk of short circuit between the electrodes, it is preferable that each electrode is drawn out with a sufficient interval.

[0046] (5) In the above-described embodiments, the power generation film module 1 was described as having one thermoelectric generation section 1B laminated on one photovoltaic section 1A. However, the present invention is not limited to this. The power generation film module may have a plurality of thermoelectric generation sections laminated thereon. For example, a thermoelectric generation section may be laminated under the photovoltaic section, and still another thermoelectric generation section may be laminated further under that. In that case, the thermoelectric generation sections may be adhesively fixed to each other using an epoxy-based adhesive for film adhesion, similar to the adhesive fixation between the photovoltaic section and the thermoelectric generation section.

[0047] (6) In the above-described embodiments, the thermoelectric generation section 1B was described as being configured as an n-type thermoelectric film. However, the present invention is not limited to this. If it is possible to lower the temperature at the installation location on the base film side, the thermoelectric generation section may be a thermoelectric element capable of generating electricity using the Seebeck effect due to the temperature difference between the front and back surfaces by using a material in which a p-type semiconductor and an n-type semiconductor are combined in the thermoelectric conversion material.

[0048] In the above-described embodiment, the photoelectric power generation part 1A and the thermoelectric power generation part 1B are described as being one film (one layer) each above and below with the photoelectric power generation layer 3 or the thermoelectric power generation layer 5 interposed therebetween. However, the present invention is not limited thereto. The photoelectric power generation part and the thermoelectric power generation part may each have a plurality of layers formed above and below the photoelectric power generation layer or the thermoelectric power generation layer.

Explanation of Reference Numerals

[0049] 1... Power generation film module, 1A... Photoelectric power generation part, 1B... Thermoelectric power generation part, 2... Light-receiving surface film, 3... Photoelectric power generation layer, 4... Heat conduction intermediate film, 5... Thermoelectric power generation layer, 6... Base film, 7... Pair of positive and negative photoelectric power generation electrodes, 7a... Positive photoelectric power generation electrode, 7b... Negative photoelectric power generation electrode, 8... Pair of positive and negative thermoelectric power generation electrodes, 8a... Positive thermoelectric power generation electrode, 8b... Negative thermoelectric power generation electrode, 41... Intermediate film on the photoelectric power generation layer side, 42... Intermediate film on the thermoelectric power generation layer side, 43... Adhesive layer, ST1... Photoelectric power generation part manufacturing process, ST2... Thermoelectric power generation part manufacturing process, ST3... Laminating process

Claims

1. A light-receiving surface film for receiving light, a photoelectric conversion layer laminated on the back surface of the light-receiving surface film and generating electricity by transmitted light that passes through the light-receiving surface film, a pair of positive and negative photovoltaic electrodes for extracting generated electric power from the photovoltaic layer, a heat conduction intermediate film laminated on the back surface of the photovoltaic layer, a thermoelectric conversion layer laminated on the back surface of the heat conduction intermediate film and generating electricity by conduction heat transmitted through the heat conduction intermediate film, a pair of positive and negative thermoelectric electrodes for extracting generated electric power from the thermoelectric layer, a base film laminated on the back surface of the thermoelectric layer, A power generation film module characterized by having the above.

2. In the power generation film module according to Claim 1, the heat conduction intermediate film an intermediate film on the photovoltaic layer side laminated on the back surface of the photovoltaic layer, an intermediate film on the thermoelectric layer side laminated on the front surface of the thermoelectric layer, and an adhesive layer bonding the intermediate film on the photovoltaic layer side and the intermediate film on the thermoelectric layer side, A power generation film module comprising the above.

3. In the power generation film module according to Claim 2, the adhesive layer is a layer of an epoxy-based adhesive having insulation and heat resistance. A power generation film module.

4. In the power generation film module according to Claim 1, each of the light-receiving surface film, the heat conduction intermediate film, and the base film has the same contour shape and is laminated with their contour shapes aligned with each other, the photovoltaic layer and the thermoelectric layer are formed in a rectangular contour shape with a size that fits inside the contour of the film, for the pair of positive and negative photovoltaic electrodes, the positive photovoltaic electrode and the negative photovoltaic electrode are drawn out from separate opposing edges of the photovoltaic layer, for the pair of positive and negative thermoelectric electrodes, at a position separated from the pair of positive and negative photovoltaic electrodes, the positive thermoelectric electrode and the negative thermoelectric electrode are drawn out from separate opposing edges of the thermoelectric layer. A power generation film module.

5. In the power generation film module according to Claim 1, A power generation film module having flexibility that can be bent in the out-of-plane direction.

6. In the power generation film module according to Claim 1, The photoelectric part composed of the light-receiving surface film, the photoelectric conversion layer, the photoelectric conversion electrode, and the heat conduction intermediate film is an organic thin-film solar cell or a perovskite solar cell, The thermoelectric part composed of the heat conduction intermediate film, the thermoelectric conversion layer, the thermoelectric conversion electrode, and the base film is a power generation film module with an n-type thermoelectric film.

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