JPH10140747A - Method of manufacturing solar cell tile - Google Patents

Abstract

(57) [Summary] [Problem] A solar cell can be securely attached to a tile base material for a long period of time, the mounting work is simple, and the tile base material is hardly cracked, and has an excellent appearance for a long period of time. To provide a method for manufacturing a solar cell tile having the same. A roof mold having a protrusion for forming a solar cell mounting portion substantially at the center thereof in a mold frame, and a tip of a metal fitting for fixing the solar cell is inserted into a corner or an edge of the protrusion. Installing the projecting portion upward with the base end protruding by the dimension embedded in the tile base material, and pouring the tile substrate forming slurry into the mold frame. A step of forming a formation layer and embedding a base end of the metal fitting, and a tile having a solar cell mounting portion from which the tip of the metal fitting for fixing the solar cell is cured by removing the tile base material forming layer and fixing the solar cell. The method includes a step of forming a base material, and a step of placing a solar cell on a solar cell mounting portion of a tile base material and locking it with a metal fitting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for manufacturing a solar cell roof tile.

[0002]

2. Description of the Related Art The roof tiles of a sunny house are one of the advantageous places for installing solar cells. However, the roof tile of a house is usually laid on a sloping roof, so the surface is sloping. To install a solar cell thereon, fix it with a suitable fixing member so as not to fall. There is a need. Accordingly, there is a problem that a fixing member as a separate member is required and the fixing operation is complicated.

[0003] In view of this point, various proposals have conventionally been made in which a solar cell is directly attached to a roof tile. For example, Japanese Patent Application Laid-Open No. Hei 3-25146 proposes a glass slate tile in which a solar cell is integrally provided on the lower surface of the front part of the tile. However, the tile becomes expensive and is heavy and damaged. There is a drawback that it is easy to do.

Further, Japanese Utility Model Laid-Open No. 4-28524 proposes a solar cell element housed in a concave portion on the surface of a thick tile made of fiber reinforced cement or fired clay and fixed with an adhesive. In the official gazette of Japanese Utility Model Application Publication No.
There has been proposed a roof tile body in which a solar cell and a transparent protective plate are fitted in a storage section provided in the main body.

[0005] However, on a sunny roof,
Over time, the adhesive deteriorates, and the transparent protective plate is likely to be warped and come off, resulting in a poor appearance,
In severe cases, there is a problem that the solar cell element is dangerously dropped by the wind and rain.

Various methods have been proposed for electrically connecting roof tiles incorporating solar cells. For example, Japanese Patent Application Laid-Open No. 7-62802 discloses that a lead wire is drawn out from a solar cell (mounted on the back side) provided in a lower half of a transparent roof tile to the front side through an upper half and attached to the solar cell surface. However, there has been proposed a method of electrically connecting lead wires and electrodes when roofing the upper and lower tiles.

Japanese Patent Application Laid-Open No. 6-346557 proposes a method in which a wiring unit is provided on the upper surface side of a panel body, a plurality of connectors are provided in the wiring unit, and a solar cell roof tile is connected to the connector of the wiring unit. .

Japanese Patent Application Laid-Open No. 5-18051 discloses that a solar cell is sealed with resin on the back surface of a tile, its electrodes are connected to lead wires, and connection terminals and lead wires are preliminarily incorporated into a roof base frame. In addition, a method has been proposed in which an electrode from a battery is inserted into an electrode of a frame when the tiles are roofed, thereby electrically connecting the respective tiles.

Japanese Utility Model Laid-Open No. 6-44867 proposes a method of directly extracting a lead wire from a battery, fitting the lead wire into a tile frame, and connecting the lead wire through the back of the tile body.

However, according to these methods, the connection and sealing work between the electrodes of the tile base material and the lead wires are complicated, and the connection of the tiles is complicated due to the complicated arrangement of the lead wires on the back surface of the tile. However, there is a problem that it takes a long time, the number of wirings from one electrode to another increases, and the material cost increases.

On the other hand, as raw materials for building materials having excellent mechanical strength, curable inorganic compositions mainly composed of SiO ₂ ─Al ₂ O ₃ powder and alkali metal silicate are known. In Japanese Patent Publication No. 3-9060, there is proposed a hydrous inorganic molding material in which ash or calcined bauxite of electric dust is mixed with an alkali metal silicate aqueous solution.

However, when a roof tile in which a solar cell is embedded is formed by cast molding using this water-containing inorganic molding material, the roof tile is heavy, and the hardening shrinkage ratio of the roof substrate portion after molding is large. There is a problem of cracking.

[0013]

SUMMARY OF THE INVENTION According to the present invention, it is possible to secure the solar cell to the tile base material for a long period of time, and the installation work is simple, and the tile base material is hardly cracked. The purpose of the present invention is to provide a method for manufacturing a solar cell tile having an excellent appearance.

Further, the present invention provides a method of manufacturing a solar battery tile having an excellent appearance for a long period of time, in which the tiles are easily electrically connected to each other when the roof is roofed, and the tile base material is hardly cracked. The purpose of this is to provide.

[0015]

The present invention described in claim 1 of the present application (hereinafter referred to as the present invention 1 when referring only to the present invention) is a method of manufacturing a solar cell tile in which a solar cell is mounted on a tile base material. A method, in a mold, a roofing mold having a protrusion for forming a solar cell mounting portion at a substantially central portion, a tip of a metal fitting for fixing a solar cell at a corner or an edge of the protrusion. Piercing the base end of the tile base so as to be buried in the tile base material, and setting the protrusion upward, and forming a SiO ₂ ─Al ₂ O ₃ powder in the mold. Pouring a slurry for forming a tile base material comprising alkali metal silicate and water, forming a tile base material forming layer and embedding the base end of the metal fitting, and curing and removing the tile base material forming layer. A roof tile base having a concave-shaped solar cell mounting portion from which a tip portion of a bracket for fixing a solar cell protrudes is formed. A step of a method of manufacturing a solar cell roof tile comprising a step of engaging the mounting and fitting the solar cell in the recessed shape of the solar battery holder of Kawaramoto material.

The present invention described in claim 2 of the present application (hereinafter referred to as the present invention 2 when referring only to the present invention) is a method for manufacturing a solar cell tile in which a solar cell is mounted on a tile base material, In the frame, a roof mold having a protrusion for forming a solar cell mounting portion in a substantially central portion, a connector capable of being connected to a connector from an electrode terminal of the solar cell is fixed to a corner or an edge of the protrusion, A step of placing the protruding portion upward with the lead wire pulled out from the connector; and a tile made of SiO ₂ ─Al ₂ O ₃ -based powder, an alkali metal silicate and water in a mold. A step of pouring the slurry for forming the base material to form a tile base material forming layer, and curing and removing the tile base material forming layer,
A step of forming a tile base material having a recessed solar cell mounting portion from which a connector to a solar cell is led out, and from which a lead wire is drawn out of the connector; This is a method for manufacturing a solar battery tile, which comprises a step of connecting connectors to a battery mounting portion so as to connect them.

In the present invention, a slurry composed of SiO ₂ ─Al ₂ O ₃ powder, an alkali metal silicate and water is used as a tile base material forming slurry. SiO ₂ ─Al
_{As the 2} O ₃ -based powder, SiO ₂ / Al ₂ O ₃ = 1/9
９9/1 (weight ratio) is preferably used, and those containing 50 wt% or more of SiO ₂ and Al ₂ O ₃ as a whole are preferably used.

Examples of such SiO ₂ ─Al ₂ O ₃ based powders include fly ash containing 400% by weight or more containing 80% by weight or more having a particle size of 10 μm or less.
An inorganic powder obtained by melting fly ash, fly ash or clay containing 80% by weight having a particle size of 10 μm or less and having a particle size of 10 μm or less and spraying it into a gas, and 0.1 to 30 kWh / kg of mechanical powder, the inorganic powder obtained by further heating the inorganic powder at 100 to 750 ° C., and 0.1 to 30 kW to the metakaolin.
Examples include inorganic powders obtained by applying mechanical energy of h / kg, one or more kinds of powders selected from ash of an electrostatic precipitator when corundum or mullite is produced, pulverized calcined bauxite, and metakaolin.

Here, fly ash refers to JIS A
More than 40% of SiO ₂ of fine ash particles collected by a dust collector from a finely pulverized combustion boiler specified in 6201,
Moisture 1% or less, specific gravity 1.95 or more, specific surface area 2,700
It should pass at least 75% of a 44 μm standard sieve of not less than cm ² / g.

As a method for obtaining fly ash from the fly ash, any conventionally known method can be adopted, for example, a classifier generally used for wet sedimentation classification, air classification, separation by specific gravity, or a jet mill It is possible by using a fine pulverizer such as a roll mill, a ball mill and the like and a continuous system of a classifier and a pulverizer. When the amount of fly ash having a particle size of 10 μm or less is less than 80% by weight, the reactivity with an aqueous alkali metal silicate solution is reduced, and there is a possibility that strength may be reduced or poor curing may occur.

Fly ash is generally black, but if it needs to be colored, it is decolorized by firing. 400 ° C
Decoloring is possible by baking at the above temperature, but 1,000 ° C
If the firing is performed at a temperature exceeding the above range, the reactivity with the aqueous solution of the alkali metal silicate decreases, so that the above-mentioned temperature range is preferable for fly ash.

As a method of spraying fly ash or a melt of clay into a gas in order to obtain the inorganic powder, a thermal spraying technique used for ceramic coating is applied. In this thermal spraying technique, the fly ash and the clay are preferably melted at a temperature of 2,000 to 16,000 ° C. and sprayed at a speed of 30 to 80 m / s. , A high energy gas spraying method, an arc spraying method and the like are employed. The specific surface area of the reactive inorganic powder obtained by the spraying technique is generally controlled to 0.1 to 60 m ² / g.

As the clay, clay containing 5 to 85% by weight of SiO _{2 and} 90 to 10% by weight of Al ₂ O ₃ as a chemical composition is used.
Mineral clay minerals such as kaolin minerals such as dickite, nacrite, and hallocite, muscovite, illite, fenjanite, chlorite, celadonite, paragonite, blamanite, montmorillonite, beidellite, nontronite, sabonite, sauconite, etc. Smectite, chlorite, pyphyllite, talc, sand shale can be used.

The mechanical energy at the time of obtaining the above-mentioned inorganic powder refers to a compressive force, a shearing force, and an impact force, which may be used alone or in combination of two or more. . Examples of the equipment for making these work include a ball mill, a vibration mill, a planetary mill, a medium stirring type mill, a roller mill, a mortar, a jet crusher, and the like.

Clay or metakaolin as a raw material for obtaining the above-mentioned inorganic powder is not particularly limited.
The thickness is preferably from 01 to 500 μm, and more preferably from 0.1 to 100 μm.

If the mechanical energy acting on the clay or metakaolin as a raw material for obtaining the inorganic powder is too small, the reactivity with the aqueous alkali metal silicate solution is reduced, and if it is too large, the load on the pulverizer is large. In this case, wear and damage to the apparatus increase, and a problem of mixing impurities occurs. Therefore, the amount is limited to 0.1 to 30 kwh / kg, and preferably 1.0 to 26 kwh / kg.

When applying mechanical energy to clay or metakaolin, a grinding aid may be added as necessary. Grinding aids prevent the powder of clay or metakaolin from adhering or agglomerating inside the apparatus when mechanical energy is applied, and include, for example, alcohols such as methyl alcohol and ethyl alcohol; Examples thereof include alcohol amines such as ethanolamine, metal soaps such as sodium stearate and calcium stearate, and acetone vapor. These may be used alone or in combination of two or more.

The inorganic powder is obtained by heating the inorganic powder to 100 to 750 ° C., preferably 200 to 600 ° C. It is because improvement is recognized. When the heating temperature is lower than 100 ° C., the mechanical strength of the obtained cured product is little improved. At 750 ° C., the inorganic powder is crystallized, and the reactivity to the aqueous alkali metal silicate solution is reduced. The heating time is preferably from 1 minute to 5 hours, since the shorter the heating time, the smaller the improvement in mechanical strength of the obtained cured product, and the longer the heating time, the higher the energy cost.

[0029] Or, as the inorganic powder,
Those described in Japanese Patent No. 9060 and Japanese Patent Publication No. 4-45471 are used. As the inorganic powder, commercially available metakaolin is used.

As the alkali metal silicate, the following formula (1)
The compound represented by is preferably used. M ₂ O · nSiO ₂ (1) In the formula (1), M represents at least one metal selected from K, Na, and Li, and n represents a rational number. When the value of n is small, a cured product having a good appearance cannot be obtained, and when the value is large, gelation tends to occur. Therefore, the value of n is preferably 0.05 to 8, and more preferably 0.5 to 2.5.

The alkali metal silicate is preferably added in the form of an aqueous solution. If the concentration of the aqueous solution in this case is too low, the reactivity with the SiO ₂ ─Al ₂ O ₃ powder tends to decrease, and if the concentration is too high, an alkali metal salt is likely to be generated. % Is preferable. The alkali metal silicate may be dissolved in water as it is under pressure and heat, but the alkali metal silicate aqueous solution is heated under pressure and heat so that SiO ₂ components such as silica sand and silica stone have a predetermined value of n. May be dissolved while being added.

If the amount of the alkali metal silicate is too small, the reactivity with the SiO ₂ ─Al ₂ O ₃ powder tends to decrease. If the amount is too large, the water resistance of the obtained cured product tends to decrease. It is preferably 10 to 80 parts by weight, more preferably 20 parts by weight, based on 100 parts by weight of the SiO ₂ ─Al ₂ O ₃ powder.
７０70 parts by weight.

The water may be added in a total amount as an aqueous solution of an alkali metal silicate, or may be added in the form of both an aqueous solution of an alkali metal silicate and independent water. If the amount of water added is too small, it is difficult to cure sufficiently,
If the amount is too large, the strength of the obtained cured product tends to decrease.
10 to 100 parts by weight of iO ₂ ─Al ₂ O ₃ powder
It is preferably 1,000, more preferably 10 to 750 parts by weight, particularly preferably 50 to 500 parts by weight.

[0034] In each of the above-mentioned compositions, an inorganic filler, a reinforcing fiber, a pigment, a foaming aid and the like can be added as required.

In the present invention, the slurry is, for example, 5
By performing the heat treatment in an atmosphere of 0 to 100 ° C,
It can be cured to form a tile substrate. The heat treatment is
Although not particularly limited, for example, it can be performed by an oven or the like.

[0036]

According to the method of manufacturing a solar cell tile of the present invention, a roof mold having a protrusion for forming a solar cell mounting portion at a substantially central portion is formed in a mold frame at a corner or an edge of the protrusion. A step of piercing the tip of the metal fitting for fixing the solar cell and projecting the projecting portion upward with the base end projecting by a size embedded in the tile base material, and SiO ₂
(4) a step of pouring a tile base material forming slurry comprising an Al ₂ O ₃ powder, an alkali metal silicate and water to form a tile base material forming layer and embedding a base end of the metal fitting; Curing the layer, removing the mold, and forming a tile base having a concave-shaped solar cell mounting portion from which the tip of a metal fixture for fixing the solar cell projects, The step of mounting the solar cell on the solar cell mounting part and locking it with a metal fitting allows the solar cell to be mounted on the concave solar cell mounting part when mounting the solar cell on the tile base material, Since the part is fixed by the metal fittings embedded in the tile base material, the state where the solar cell is fixed to the tile base material for a long period of time can be secured, and the mounting work is simple because only the tip of the metal fitting needs to be bent. Can manufacture solar cell tiles with excellent appearance over a long period of time Kill.

According to the method for manufacturing a solar cell tile of the second aspect of the present invention, a tile mold having a projection for forming a solar cell mounting portion at a substantially central portion in a mold frame is provided at a corner or an edge of the projection. is a connector fixed to be connected with the connector from the electrode terminals of the solar cell, SiO ₂ ─Al from its connector in a state where the lead wire is drawn out, a step of installing toward the protruding portion upwards, in the mold A step of pouring a slurry for forming a tile base material comprising a ₂ O ₃ powder, an alkali metal silicate and water to form a tile base material forming layer, and curing and removing the tile base material forming layer;
A step of forming a tile base material having a recessed solar cell mounting portion from which a connector to a solar cell is led out, and from which a lead wire is drawn out of the connector; The process of connecting the connectors to the battery mounting portion and mounting the solar battery on the roof tile substrate by connecting the connectors from the electrode terminals of the solar cell to the solar battery mounting portion by mounting the solar cell on the tile base material And the solar cell is simply placed on the recessed solar cell mounting part, so that mounting work is easy, and when roofing solar cells on the roof, connect the connectors of adjacent tiles. Therefore, it is possible to manufacture a solar cell tile in which electrical connection between the tiles is easy.

[0038]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 to FIG. 4 are explanatory diagrams for sequentially explaining manufacturing steps of an example of a method for manufacturing a solar cell tile according to the present invention. First, in a first step, as shown in FIG. 1, a projecting portion 5 for forming a solar cell mounting portion
The rubber roofing mold 5 having the number 1 is set so that the protrusion 51 faces upward.

At the four corners of the protruding portion 51 of the roof mold 5, a front end 61 of a metal fitting 6 for fixing a solar cell is inserted, and a base end 62 bent in a key shape is attached to the roof substrate. Is projected only by the size embedded in the base.

Next, in the second step, as shown in FIG. 2, a slurry for forming a tile base material comprising SiO ₂ ─Al ₂ O ₃ powder, alkali metal silicate and water is placed in a mold 3. To form a tile base material forming layer 12 ′, and bury the base end 62 of the metal fitting 6.

In a third step, the mold 3 is placed in an oven (not shown) while the upper mold 4 is placed on the mold 3, and is heated,
The tile base material forming layer 12 ′ is cured and removed from the mold, and as shown in FIG. 3, a solar cell mounting portion in which the base end portion 62 of the metal fitting 6 for fixing the solar cell is embedded in the four corners and the tip end portion 61 projects. A tile substrate 12 having 121 is formed.

In the final step, the solar cell 11 is
Placed on the solar cell mounting portion 121 formed in a concave shape of
The solar cell 11 is fixed by bending the tip 61 of the metal fitting 6, and the connector 13 drawn out from the electrode terminal of the solar cell 11 by a lead wire is exposed on the tile base 12, and the solar cell as shown in FIG. Obtain the roof tile 1.

FIGS. 5 to 9 are explanatory views for sequentially explaining the manufacturing steps of another example of the method for manufacturing a solar cell tile according to the present invention.
First, in the first step, as shown in FIG. 5, a rubber roof mold 5 having a protrusion 51 for forming a solar cell mounting portion in a substantially central portion is placed in a mold 3 and the protrusion 51 is placed upward. Set up so that it faces.

In the second step, as shown in FIG.
The connector 7 that can be connected to the connector from the electrode terminal of the solar cell is fixed to the protrusion 51 of the tile mold 5 with clay. The lead wire 8 is pulled out from the connector 7 and is pulled out of the mold 3 so as to pass through the rubber plug 9 fitted in the through hole 31 provided in the mold 3.

In the third step, as shown in FIG. 7, a slurry for forming a tile base material composed of SiO ₂ ─Al ₂ O ₃ powder, alkali metal silicate and water is poured into the mold 3. A tile base material forming layer 22 'is formed.

In the fourth step, the mold 3 is placed in an oven (not shown) while the upper mold 4 is being placed on the mold 3 and is subjected to a heat treatment.
The tile base material forming layer 22 ′ is cured and demolded, and the clay is removed.
As shown in FIG. 8, a solar cell mounting portion 221 formed in a concave shape from which a connector 7 for a solar cell is led out is obtained, and a tile base material 22 from which a lead wire is drawn out from the connector is obtained.

In the final step, the solar cell 21 is
The solar cell roof tile 2 as shown in FIG. 9 is obtained by connecting the connectors to the concave solar cell mounting portion 221 in such a manner that the connectors are connected to each other. As shown in FIG. 10, the obtained solar cell tile 2 is connected to a connector between adjacent tiles while being laid on a roof.

[0048]

The present invention will be described below with reference to examples. Example 1 (1) Preparation of SiO ₂ ─Al ₂ O ₃ based powder Fly ash (manufactured by Kanden Kako Co., average particle size 20 μm: J
ISA 6201) by a spherometer (Model: TC15, manufactured by Nisshin Engineering Co., Ltd.) to give a particle size of 1.
SiO ₂ ─A containing 100% by weight of powder of 0 μm or less
l ₂ O ₃ powder was prepared.

(2) Preparation of an aqueous solution of an alkali metal silicate An aqueous solution of an alkali metal silicate shown in Table 1 was prepared using a 1K aqueous solution of potassium silicate (manufactured by Nippon Chemical Industry Co., Ltd.) and water.

(3) Preparation of Slurry for Roof Substrate Formation Table 2 was prepared using an omni mixer (manufactured by Chiyoda Giken Kogyo).
After adding the SiO ₂ ─Al ₂ O ₃ -based powder, the aqueous solution of an alkali metal silicate and water in the amounts shown in
A tile base material forming slurry was prepared. (4) Fabrication of solar cell roof tile A solar cell roof tile as shown in FIG. 4 was obtained through the steps described in the first step to the final step described with reference to FIGS.

Example 2 (1) to (3) are the same as in Example 1. (4) Fabrication of Solar Cell Roof A solar cell roof as shown in FIG. 9 was obtained through the steps as described in the first step to the final step described with reference to FIGS.

[0052]

According to the method for manufacturing a solar cell tile of the present invention 1 as described above, the solar cell is fixed to the tile base material for a long time, and the mounting operation is simple.
In addition, it is possible to manufacture a solar cell tile that is lightweight, hardly cracks in the tile base material, and has an excellent appearance over a long period of time.

Since the method for manufacturing a solar cell tile according to the second aspect of the present invention is as described above, it is easy to mount the solar cell on the tile base and to make electrical connection between the tiles, and the tile base is made It is possible to manufacture a solar battery tile that is lightweight, hardly cracks, and has an excellent appearance over a long period of time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a first step of an example of a method for manufacturing a solar cell tile according to the present invention.

FIG. 2 is a cross-sectional view illustrating a second step of the example of the method for manufacturing a solar cell tile according to the present invention.

FIG. 3 is a cross-sectional view showing a tile base material obtained by one example of a method for manufacturing a solar cell tile according to the present invention.

FIG. 4 is a cross-sectional view showing a solar cell tile obtained by one example of a method for manufacturing a solar cell tile of the present invention.

FIG. 5 shows a first example of another example of the method for manufacturing a solar cell tile according to the present invention.
It is sectional drawing explaining a process.

FIG. 6 shows a second example of another example of the method for manufacturing a solar cell tile according to the present invention.
It is sectional drawing explaining a process.

FIG. 7 shows a third example of another example of the method for manufacturing a solar cell tile according to the present invention.
It is sectional drawing explaining a process.

FIG. 8 is a cross-sectional view showing a tile base material obtained by another example of the method for manufacturing a solar cell tile of the present invention.

FIG. 9 is a cross-sectional view showing a solar cell tile obtained by another example of the method for manufacturing a solar cell tile of the present invention.

FIG. 10 is a perspective view illustrating a use state of the solar cell tile shown in FIG.

[Explanation of symbols]

 1, 2 solar cell roof tile 3 mold 4 upper mold 5 roof tile mold 11, 21 solar cell 12, 22 tile base 12 ', 22' tile base forming layer 51 projecting part 121, 221 solar cell mounting part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H01L 31/042 H01L 31/04 R

Claims (2)

[Claims] 1. A method of manufacturing a solar cell tile in which a solar cell is mounted on a tile base material, comprising: a tile forming mold having a protrusion for forming a solar cell mounting portion at a substantially central portion in a mold frame; With the tip of the metal fitting for fixing the solar cell pierced into the corner or edge of the protrusion, and with the base end protruded by the size embedded in the tile base material, the protrusion is turned upward. And forming a tile base material forming layer by pouring a slurry for forming a tile base material composed of SiO ₂ ─Al ₂ O ₃ -based powder, an alkali metal silicate and water into a mold to form a tile base forming layer. A step of embedding the end portion and a step of curing and removing the tile base material forming layer and forming a tile base material having a concave-shaped solar cell mounting portion from which a tip portion of a bracket for fixing the solar cell projects. , The step of mounting the solar cell on the concave solar cell mounting portion of the tile base material and locking it with a metal fitting Method of manufacturing a solar cell roof tile according to claim. 2. A method for manufacturing a solar cell tile in which a solar cell is mounted on a tile base material, comprising: forming a tile forming mold having a protrusion for forming a solar cell mounting portion in a substantially central portion in a mold frame; A step of fixing a connector that can be connected to a connector from an electrode terminal of a solar cell to a corner or an edge of the protrusion, and placing the protrusion upward in a state where a lead wire is drawn out from the connector. Pouring a slurry for forming a tile base material comprising a SiO ₂ ─Al ₂ O ₃ -based powder, an alkali metal silicate and water into a mold to form a tile base material forming layer; Curing and demolding, forming a roof tile base material having a concave-shaped solar cell mounting portion from which a connector for a solar cell is led out, and a lead wire drawn out from the connector; Connect the connectors to each other in the concave solar cell mounting part of the material. Method of manufacturing a solar cell roof tile, characterized by comprising the step of mounting.