JP3305945B2 - Solar cell module, solar cell module unit, mounting method thereof, and roof mounting these - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic module, a photovoltaic module unit, a mounting method thereof, and a roof on which the photovoltaic module is mounted on a roof of a building such as a house.

[0002]

2. Description of the Related Art In recent years, along with the worsening of global environmental problems and energy depletion problems due to increased consumption of fossil fuels, etc., panel-shaped solar cell modules have been installed on roofs of houses and the like, and clean solar cells have been installed. 2. Description of the Related Art A residential photovoltaic power generation system that directly extracts power from energy and supplies the power to a home has attracted attention. By the way, when installing this type of solar cell module on the roof surface, simply fixing with normal bolts will cause rainwater to penetrate from the gap between the male screw and female screw, and the roof base material will decay, For example, actual fairness 7-34
There has been provided a method of mounting a plurality of solar cell modules side by side by using a connecting member as described in JP-A-0992 or the like. That is, as shown in FIG. 16, the connecting member 101 has lower wing plates 101 on the left and right sides, respectively.
a and the upper wing plate 101b constitute an insertion space, and the solar cell modules 102, 1 are inserted into the insertion spaces on both sides.
02 is fixed by inserting the support member 104 into the roof surface 103.
The rainwater 105 is prevented from leaking below the solar cell modules 102, 102 by being attached via the.

[0003]

However, in the method of mounting a solar cell module described in the above publication, as shown in the figure, the upper surface (rain spraying surface) of the solar cell module 102 on the upstream side of the connecting member 101, Since a depression is formed at the contact portion with the upper wing plate 101b, rainwater 105 sprayed on the upper surface of the solar cell module 102 during rainfall accumulates in the depression. For this reason, the rainwater 105
Penetrates through the gap between the solar cell module 102 and the connecting member 101, and the durability may be impaired.
Further, there is a disadvantage that the dirt carried by the rainwater 105 remains on the upper surface of the solar cell module 102 after the rainwater 105 evaporates, and the dirt caused by the sunlight passing through the transparent glass plate of the solar cell module 102 due to the dirt. Since the ratio is reduced, there is a disadvantage that the energy conversion efficiency of the solar cell module 102 is reduced.

The present invention has been made in view of the above circumstances, and when installing a solar cell module on a roof surface of a house or the like, rainwater sprayed on the solar cell module remains on the upper surface of the transparent glass plate as it is. Module suitable for installation on a roof of a building such as a house, which can prevent the transparent glass plate from being stained, and a solar cell module unit, a mounting method thereof, and a roof on which these are mounted It is intended to provide.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a substantially rectangular solar cell in which a solar cell is sandwiched between a transparent front cover material and a rear cover material. A solar cell module in which an end surface of a module main body is sealed by a sealing member over the entire circumference, wherein an end surface of the solar cell module main body is fitted over the entire inner circumference of the sealing member. A drain groove for discharging rainwater from the surface of the surface cover material that is a rain spray surface of the solar cell module body at a predetermined portion of the sealing member. It is characterized by having a drain hole.

According to a second aspect of the present invention, there is provided the solar cell module according to the first aspect, wherein the annular annular ridge protruding upward from an upper surface or downward from a bottom surface of the sealing member. It is characterized by being provided singly or multiplely, and the drainage groove is provided by cutting out the ridge at a predetermined portion of the sealing member.

According to a third aspect of the present invention, there is provided the solar cell module according to the first or second aspect, wherein the drain groove is provided when the solar cell module is installed on a roof surface.
At least on one side of the linear portion on the eaves side of the two linear portions of the sealing member that will be opposed to each other in a direction perpendicular to the tilt direction of the solar cell module, at least from the upper surface to the side surface. It is characterized by being provided.

According to a fourth aspect of the present invention, there is provided a roof mounted with a solar cell module, wherein the solar cell module according to the first, second, or third aspect is arranged such that the drain groove or the drain hole is located on the eaves side. It is characterized by being installed on a sloped roof surface.

[0009] The invention according to claim 5 is based on claim 1,
4. A method for mounting the solar cell module according to 2 or 3 on a sloped roof surface, comprising a long placement surface on which any one linear portion of the sealing member is placed, and a lower surface fixed to the sloped roof surface. Along with the mounting surface, and a pair of long receiving frame members provided with a rain gutter portion for flowing rainwater at a position lower than the mounting surface, In the state where the linear portion of the sealing member placed on the mounting surface of the receiving frame member is pressed down from above, the linear portion of the sealing member is pressed by the pressing surface. Prepare a pair of long holding frame members respectively fixed to the receiving frame member by a fixing tool, first, a pair of the receiving frame members in a direction perpendicular to the inclination direction of the sloped roof surface, and mutually predetermined The inclined house After arranging and fixing to the surface, the drainage passage of the solar cell module is arranged on the eaves side on each mounting surface of the pair of receiving frame members, and the corresponding linear portion of the sealing member of the solar cell module is mounted, Next, from above the linear portion of the sealing member placed on the mounting surface, cover the pair of the holding frame members, and these holding frame members, the holding member of the sealing member by the respective holding surface. The linear part is pressed and fixed to the pair of receiving frame members by a fixing tool, and the rainwater sprayed on the surface of the solar cell module main body passes through the drain groove or the drain hole. It is characterized in that it flows into the rain gutter.

[0010] The invention according to claim 6 is based on claim 1,
A solar cell module unit in which a plurality of the solar cell modules according to 2 or 3 are arranged and assembled with a frame member to form an integrated unit, wherein the plurality of solar cell modules are arranged at both ends of the solar cell module unit. It has a long mounting surface on which the linear portion of the sealing member is mounted, and along the mounting surface, a rain gutter portion for flowing rainwater at a position lower than the mounting surface is provided. A long pair of receiving frame members, and a long pressing surface for pressing the linear portion of the sealing member placed on the mounting surface above the receiving frame member from above, and the pressing surface A pair of long holding frame members fixed to the receiving frame member by the fixing tool in a state where the linear portion of the sealing member is pressed, and opposing opposing sealing members of the solar cell modules on both sides adjacent to each other. The linear part The first and second mounting surfaces extending in parallel at a predetermined distance from each other, along the first and second mounting surfaces, and along the first and second mounting surfaces. 2
A single or a plurality of long joint receiving frame members provided with a rain gutter for flowing rainwater at a position lower than the mounting surface of the first and second joint receiving frame members; 2 having a long first and second pressing surfaces for pressing the linear portion of each of the sealing members mounted on the mounting surface 2 from above,
In a state where the linear portions of the respective sealing members are pressed by these pressing surfaces, a fixing tool inserted into a fixing tool insertion hole provided between the first pressing surface and the second pressing surface is used. It is characterized by being assembled at least with a long joint holding frame member fixed to the joint receiving frame member.

According to a seventh aspect of the present invention, there is provided a method of mounting the solar cell module unit according to the sixth aspect on an inclined roof surface, wherein each of the receiving frame members, the joint receiving frame member, the holding frame member, The solar cell module unit is tilted so that the long direction of the joint holding frame member is parallel to the tilt direction of the inclined roof surface, and the drainage channels of the plurality of solar cell modules are arranged on the eaves side. The rain gutter of the pair of receiving frame members and the joint receiving frame members is attached and fixed to the roof surface by a fixing tool, and the rainwater sprayed on the surface of the solar cell module body passes through the drain grooves or drain holes. It is characterized in that it flows into the part.

Further, the roof on which the solar cell module unit according to the invention of claim 8 is mounted is characterized in that the solar cell module unit according to claim 6 is installed on an inclined roof surface.

[0013]

According to the structure of the present invention, when the solar cell module is installed on the roof surface, at least one of the two linear portions of the sealing member that face each other in a direction perpendicular to the inclination direction. A drainage groove or drainage hole for discharging rainwater to be blown is provided at the eaves-side part of the side linear part, so that rainwater is sealed by the eaves-side sealing member on the upper surface of the solar cell module body. The water is drained quickly without being hindered by the steps. Therefore, rainwater hardly stays for a long time in the portion sealed by the eave-side sealing member on the upper surface of the solar cell module main body. Also, after the rainwater evaporates,
Since the dirt carried by the rainwater does not remain on the upper surface of the solar cell module, the appearance is excellent, and the transmittance of sunlight incident from the surface cover material of the solar cell module is maintained without lowering. It is possible to prevent the energy conversion efficiency of the battery module from being lowered. The above-described effects become more remarkable as the inclination angle of the roof surface becomes gentler.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. FIG. 1 is a plan view of a solar cell module according to one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB of FIG. FIG. 4 is a cross-sectional view of the solar cell module body of this example, and FIG.
Is a perspective view of a mold used for manufacturing the solar cell module, FIG. 6 is a cross-sectional view taken along line CC of FIG. 5, and FIG.
5 is a cross-sectional view taken along line DD, FIG. 8 is a cross-sectional view taken along line EE in FIG. 5, and FIG. 9 is a cross-sectional view illustrating a schematic configuration of an injection molding apparatus used for manufacturing the solar cell module. Figure, Figure 1
0 is a process explanatory view for explaining a method for manufacturing the solar cell module, FIG. 11 is an exploded perspective view showing an exploded mounting structure of the solar cell module, and FIG. FIG. 13 is an enlarged sectional view taken along line FF in FIG. 12, and FIG.
FIG. 15 is an enlarged sectional view taken along line GG of FIG.
FIG. 13 is an enlarged sectional view taken along line HH of FIG. 12. As shown in FIGS. 1 to 3, the solar cell module 1 of this example has a rectangular annular sealing member made of an elastic body such as urethane resin over the entire periphery of an end surface of a substantially rectangular solar cell module main body 11. 12 seals. As shown in FIG. 4, the solar cell module body 11 includes a large number of single-crystal silicon solar cells (pn junction elements) 111, 111,
Are connected in series and parallel, and a transparent glass plate 112 such as a white plate reinforced glass having excellent light transmittance and impact resistance and an EV having excellent moisture resistance so as to withstand long-term outdoor exposure.
A filler 113 such as A (ethylene vinyl acetate);
It is formed by packaging (encapsulating) a layered structure with a metal sheet 114 or the like coated on both sides with PVF (vinyl fluoride resin) having excellent insulating properties. As shown in FIGS. 2 and 3, a concave groove is formed on the inner peripheral surface of the sealing member 12 to seal the end surface of the solar cell module body 11 in a fitted state over the entire circumference, and the sealing member is sealed. On the upper surface of the member 12, angular annular upper ridges 121, 121 bulging upward over the entire circumference,
On the lower surface of the sealing member 12, there are double doubly provided angular lower protruding portions 122, 122 protruding downward over the entire circumference. Then, as shown in FIGS. 1 to 3, when the solar cell module 1 is installed on the roof surface, two sides of the sealing member 12 that face each other in a direction orthogonal to the flow direction (inclination direction). The rainwater blown to the upper surface (rain spray surface) of the solar cell module body 11 installed on the roof surface is drained to the downstream (eave side) portion of the linear portion of the above, and is guided to the rain gutter I described later. Notches 12a, 12 for
a is cut out in such a manner that the outer peripheral portion of the above-mentioned portion of the sealing member 12 goes from the upper surface to the lower surface side via the side surface while maintaining a sufficient thickness to seal the solar cell module body 11. Is provided.

Next, a method for attaching the sealing member 12 to the solar cell module body 11 will be described. The injection molding apparatus 2 used for manufacturing the solar cell module of this example includes a mold 21 for integrally molding the sealing member 12 with the solar cell module main body 11 as shown in FIGS. As shown in FIG. 9, a mixing head 22 for mixing two kinds of liquid agents and sending them to a mold 21 is connected to a predetermined portion of the mixing head. A liquid material pressure feeding unit 23 for injecting each liquid material is provided.
The mold 21 includes, for example, a surface mold 211 made of, for example, structural carbon steel for molding the substantially upper half of the sealing member 12, and a surface mold 211.
And a back mold 212 for molding a substantially lower half of the sealing member 12.
The opening surfaces of the back mold 11 and the back mold 212 are used so as to be in contact with each other at their peripheral ends. As shown in the figure, the mold 21 combined with the solar cell module body 11 housed therein has a cavity 213 for molding the sealing member 12 formed therein, A pair of sandwiching surfaces 214, 214 sandwiching the battery module body 11 from above and below is provided.
A gate 21a is provided at a predetermined portion of the front mold 211 to which the mixing head 22 is connected.
Further, the front mold 211 and the back mold 212 corresponding to the cavity 213 are provided with convex portions 213a, 213a and annular concave grooves 213b, 213b, respectively.

The mixing head 22 is supplied with, for example, a base material 12a, which is an isocyanate compound, and a curing agent 12b, such as a polyol, which are raw materials of a urethane resin which is a material of the sealing member 12, respectively, from a liquid material pumping unit 23. The liquid is mixed in the mixing head 22 and supplied as a liquid urethane resin composition from the gate 21 a to the cavity 213. The urethane resin (polyurethane) of this example is a two-component mixed-curing type thermosetting resin, and can be cured at room temperature by blending the main agent 12a and the curing agent 12b. In addition, as an isocyanate compound, MDI (diphenylmethane-4,4'-
Diisocyanate) and TDI (tolylene diisocyanate), and polyols such as polyester and polyether.

The liquid agent pumping unit 23 is a device for pumping the main agent 12a and the hardener 12b to the mixing head 22, respectively. As shown in FIG. 9, a main agent storage tank 231 for storing the main agent 12a and a hardener A hardener storage tank 232 for storing 12b, a main agent pressure feed pipe 233 serving as a path for sending the main agent 12a to the mixing head 22, a hardener pressure feed pipe 234 serving as a path for sending the hardener 12b to the mixing head 22; And a main agent pump 235 for pumping the main agent 12a, and a hardener pump 236 for pumping the hardener 12b.

In order to manufacture the solar cell module 1 using the injection molding apparatus 2 having the above-described structure, first, as shown in FIG. The mold 21 is fixed so that it contacts the lower surface of the front mold 211 and the upper surface of the back mold 212. At this time, the lower surface of the front mold 211 and the upper surface of the back mold 212 are combined in a state where they are in contact at their respective peripheral ends.
The mold 21 is clamped by a mold clamping mechanism (not shown) so as not to come off or shift due to the pressure at the time of injection. Next, the main agent 12a and the hardener 1 are stored in the main agent storage tank 231 and the hardener storage tank 232 of the liquid agent pumping unit 23, respectively.
Input 2b. Then, as shown in FIG. 2B, the main agent pump 235 and the hardener pump 236 are simultaneously started via a control device (not shown), and the main agent 12a and the hardener 12b are simultaneously pressed at a predetermined pressure. To feed the mixture to the mixing head 22. The main agent 12a and the curing agent 12b sent to the mixing head 22 are mixed in the mixing head 22 and cause a chemical reaction to become a urethane resin composition, which is a material of the sealing member 12, from the gate 21a. It is injected into the cavity 213. When the urethane resin composition enters all the fine parts of the cavity 213 and completely fills the cavity 213, as shown in FIG. Hardener pumping tube 23
The valve (not shown) attached to 4 is closed, and the main agent pump 235 and the hardener pump 236 are stopped. Since the urethane resin composition cures at room temperature as it is, the mold clamping mechanism is released and the mold 21 is disassembled without heat treatment, and the sealing member 12 is cut off by the notches 12a, 1
2a, upper ridges 121, 121 and lower ridges 12
The solar cell module 1 that is provided integrally with the solar cell module main body 11 and includes the solar cell module main body 11 can be taken out.

Next, a method for installing the solar cell modules 1, 1,... Thus manufactured on a roof surface will be described. As shown in FIGS. 11, 14 and 15, the roof surface to which the solar cell modules 1, 1,... Are mounted is covered with a base plate 32 such as a structural plywood or a particle board on the upper surfaces of the rafters 31, 31,. This field board 32
Is covered with a waterproof sheet 33 such as asphalt roofing. The area of the roof surface where the solar cell modules 1, 1, ... are not mounted is covered with a folded plate 34 made of a vinyl chloride steel plate.

As shown in FIGS. 11 and 12, for example, a solar cell module 1 is placed on a roof unit 3 having a relatively gentle sloped roof surface of a unit building, in a direction parallel to the flow direction of a sealing member 12. Mounting members 41, 41 and a joining member 42 for being fixedly mounted on the roof surface of the roof unit 3 by being sandwiched in a press-contact state by the linear portion;
It is installed using end frames 43 and 44 and a joint plate 45 which are arranged in a state orthogonal to 41 and the joining member 42. In this example, four solar cell modules 1, 1,... Are arranged side by side in two rows and two columns, and attached to the roof surface. Each of the mounting members 41 arranges the solar cell modules 1 and 1 on one side, and sandwiches the solar cell modules 1 and 1 in a press-contact state at a linear portion parallel to the flow direction of each sealing member 12. A long receiving frame 41a which is a member for mounting and fixing to the roof surface, and is arranged in parallel to the flow direction of the roof surface for mounting and fixing the solar cell modules 1, 1;
The other end of the solar cell module 1, 1 not facing the other solar cell module 1, 1 is pressed from above, and the side end of the receiving frame 41a on which the solar cell module 1, 1 is not mounted is pressed. A holding frame 41b, which is a long frame to cover, is provided. As shown in FIGS. 11, 13 and 14, each receiving frame 41a has a mounting table S1 for mounting the solar cell modules 1, 1 at a predetermined distance from the roof surface.
Screws 4a, 4a, which fix the receiving frame 41a to the roof surface at predetermined portions on both sides of the lower surface portion abutting on the roof surface.
, And an insertion hole for inserting
b or screws 4 attached from above the end frames 43, 44
, 4b,... for internal threading M1, M1,.
have. In addition, each receiving frame 41a is provided with a vertically upward direction for suppressing a deviation in a direction orthogonal to a flow direction of the solar cell module 1 within a predetermined length when the solar cell module 1 is mounted on the mounting table S1. And a long positioning erecting piece S2 that is erect, and flows down through the notches 12a, 12a into the insertion holes for inserting the screws 4a, 4a,. Rain gutters I, I for flowing incoming rainwater are provided. Each holding frame 41
b, as shown in the figure, the sealing member 1 on the side of each solar cell module 1 not facing the other solar cell module 1.
2 has a pressing surface S3 for covering and pressing, and an insertion hole M for inserting screws 4b, 4b,... Screwed into female screw portions M1, M1,.
, M2,... Are provided. Further, a cover plate S4 bent and extended vertically downward from the edge of the upper surface on the side opposite to the solar cell module 1 to a substantially roof surface covers and covers the receiving frame 41a, and further, at the leading edge of the cover plate S4, A fixing plate S5 slightly bent outwardly at a substantially right angle is closely attached to the roof surface.

As shown in FIGS. 11 and 15, the joining member 42 has the solar cell modules 1, 1,... Arranged on both sides, and is pressed at a linear portion parallel to the flow direction of each sealing member 12. Sandwiched in the state, the solar cell module 1,
Are members for attaching and fixing 1, 2,... To the roof surface, and a joint receiving frame 42a having substantially the same configuration as the receiving frame 41a;
It has a long joint pressing frame 42b for pressing down and fixing the boundary between the solar cell modules 1, 1 adjacent to each other in the direction perpendicular to the flow direction. As shown in FIG. 15, the joint receiving frame 42a includes mounting tables S1 and S1 for mounting the solar cell modules 1, 1,... At a predetermined distance from the roof surface.
Screws 4a, 4a,... For fixing the joint receiving frame 42a to the roof surface at predetermined portions on both sides of the lower surface portion abutting on the roof surface.
And a female screw portion M1 for screwing with a screw 4b, 4b,... Attached from above the joint holding frame 42b or the end frames 43, 44.
M1,... Also, the joint receiving frame 42a
Is a vertically elongate vertical member for suppressing a deviation in a direction orthogonal to the flow direction of the solar cell module 1 within a predetermined length when each solar cell module 1 is mounted on the mounting table S1. , And for flowing rainwater flowing down from the notches 12a into the inside of the insertion holes for inserting the screws 4a on both sides along the longitudinal direction. Rain gutters I, I are provided. The joint holding frame 42b has two holding surfaces S6, S6 for covering and holding the respective sealing members 12, 12 of the adjacent solar cell modules 1, 1, and has a receiving frame 42a at a predetermined position. Inserting holes M2 for inserting screws 4b, 4b, ... screwed into female screw portions M1, M1, ...
M2,... Are provided.

The end frames 43 and 44 are members that cover side ends orthogonal to the flow direction of the four solar cell modules 1, 1,... 1. Pressing plates 43a and 44a for covering and pressing the sealing member 12 on the side not opposed to 1. The receiving frames 41a and the connecting receiving frames 42 are provided at predetermined positions.
screws 4b, 4 screwed into female screw portions M1, M1,.
are provided for inserting b,..., the end frame 43 is installed on the upstream side, and the end frame 44 is installed on the downstream side. In addition, cover plates 43b and 44b, which are bent and extended vertically from the edge of the upper surface on the side opposite to the solar cell module 1 to substantially the roof surface, are provided with each receiving frame 41a, the connecting receiving frame 42a, and each holding member. Frame 41b and joint holding frame 4
2b and a side end orthogonal to the flow direction of the sealing member 12 are covered and fixed, and furthermore, at the leading edges of the covering plates 43b and 44b, the fixing members are slightly bent and extended outward at substantially right angles. The boards 43c and 44c adhere to the roof surface. The end frames 43 and 44 have, on the side facing the solar cell module 1, fitting portions separated by partition plates for fitting the ends of the holding frames 41 b and the joint holding frames 42 b. are doing. Further, the covering plate 44b of the end frame 44 is
1 and each connecting frame 42,
1a, the outlets 44d, 44d, and 44d are provided at portions corresponding to the ends of the gutter portions I, I,... Of the joint receiving frame 42a.
…have. As shown in FIGS. 11 to 13, the joint material 45 is a long and flat member for closing a gap between two sets of solar cell modules 1 and 1 adjacent in the flow direction from above. Each of the holding frames 41b and the joint holding frame 42b is provided with a cutout at the center in the lower longitudinal direction for fitting a predetermined portion of the joint material 45 from above. Each of the mounting members 41, the joining members 42, the end frames 43 and 44, and the joint plate 45 are made of, for example, a member made of aluminum or the like.

The solar cell modules 1, 1,...
To install on the roof, first, as shown in FIG.
Each of the receiving frames 41a and the joint receiving frames 42a are placed at equal intervals on the waterproof sheet 33 of the roof unit 3 in parallel with the flow direction, and are fixed at predetermined locations by screws 4a, 4a,. As shown in FIGS. 14 and 15, the screws 4a, 4a,... Are screwed down to the tree 31 that penetrates the base plate 32, and firmly fixes the respective receiving frames 41a and the joint receiving frames 42a. Next, each receiving frame 41a and the joint receiving frame 4
The solar cell modules 1, 1, 1 are mounted on the mounting tables S1, S1 of 2a.
Are placed, and the joint material 45 is placed next to the joint material 45 in the flow direction.
It is placed at the boundary between the set of solar cell modules 1 and 1. Further, on these, the joint holding frame 42b is arranged such that the holding surface S6 abuts on each sealing member 12 at the boundary between the two sets of solar cell modules 1 and 1 adjacent to each other in a direction orthogonal to the flow direction. To each holding frame 41 such that the holding surface S3 abuts on each sealing member 12 at the end of each solar cell module 1.
b, the ends of the holding frames 41b and the joint holding frames 42b are fitted into the fitting portions, and the holding plate 4
The end frames 43 and 44 are arranged so that predetermined portions 3a and 44a abut on the upper surfaces of the ends of the respective holding frames 41b and the joining holding frames 42b. Then, as shown in the figure, screws 4b, 4b,... Are inserted through insertion holes M2, M2,... Provided at predetermined positions of each holding frame 41b, joint holding frame 42b, and end frames 43, 44. Insert each receiving frame 41a
And the insertion holes M2, M2,... Of the joint receiving frame 42a.
Female thread portions M1, M1, provided at locations corresponding to
.. Are screwed until the fixing plates S5, 43c, and 44c are completely in contact with the roof surface to fix the holding frames 41b, the joining holding frames 42b, and the end frames 43, 44, respectively, and to fix each solar cell module. 1 is placed and fixed from above and below in a pressure contact state. After that, the solar cell modules 1, 1,... Are electrically connected in series and parallel to each other, and an inverter for converting DC to AC is installed at a predetermined location. Complete.

Here, the rainwater sprayed on the upper surface of each solar cell module main body 11 flows down and collects on the downstream side as shown by an arrow J in FIG. 14, for example, to form two notches 12a, 12a. And the upper surface of the sealing member 12 in the notches 12a, 12a and the pressing surface S3 of the pressing frame 41b.
Alternatively, the gap flows between the pressing surface S6 of the joint holding frame 42b and the gap between the side end surface of the sealing member 12 and the positioning piece S2 of the receiving frame 41a or the receiving frame 42a. Through the lower surface of the sealing member 12 and the receiving frame 41a
Alternatively, it flows through the gap between the joint receiving frame 42a and the upper surface of the mounting table S1, falls below the solar cell module 1, and is guided to the rain gutter portions I, I. And the spout 4 of the end frame 44
4d, it is discharged into the valley of the folded plate 34, collected at the side end of the roof, and discharged. Further, in each solar cell module 1, the upper ridges 121, 121 on the upper surface side are pressed against the pressing surface S3 of the pressing frame 41b and the pressing surface S6 of the connecting pressing frame 42b by the tightening force of the screw. ,
On the other hand, each of the lower protrusions 122 on the lower surface side is
1a and the mounting table S1 of the joint receiving frame 42a are pressed against each other to undergo elastic deformation, so that
1b, the joining holding frame 42b, the receiving frame 41a, and the joining receiving frame 42a are in close contact with each other. For example, when rainwater is blown at the time of rain at the joining portion between the sealing member 12 and each receiving frame 41 or the joint holding frame 42b, the rainwater is formed inside at locations other than the notches 12a and 12a. It is rebounded at the joint between the upper protruding portion 121 and each holding frame 41b or the joint holding frame 42b. Also, the fixing plate S5 of each holding frame 41b is in close contact with the roof surface,
Even if rainwater blows in from the side where the solar cell module 1 is not installed, it is prevented from leaking inside. The fixing plate 43c of the end frame 43 is also in close contact with the roof surface, and for example, even if rainwater is blown in from the flow direction, it is prevented from leaking into the inside. Further, the joint material 45 is pressed by each of the holding frames 41b and the joint holding frame 42b to close the gap between the two sets of solar cell modules 1 and 1 adjacent to each other in the flow direction from the upper side. From rainwater infiltration.

According to the above configuration, the sealing member 12 is opposed to the sealing member 12 in a direction orthogonal to the flow direction of the sealing member 12.
A notch 12 for discharging rainwater flowing down in the direction of the flow surface (inclined surface) at the downstream side of the two-side linear portion
Since a and 12a are provided so as to wrap around from the upper surface of the sealing member 12 to the bottom surface side via the side surfaces, the rainwater is caused by the step of the joining portion on the downstream side between the upper surface of the solar cell module body 11 and the sealing member 12. It is drained quickly without any hindrance. Therefore, the solar cell module body 11
The portion sealed by the sealing member 12 on the downstream side of the upper surface is not immersed in the retained rainwater for a long time. Also,
Since the dirt carried by the rainwater does not remain on the upper surface of the solar cell module 1 after the evaporation of the rainwater, the appearance is excellent and the transparent supporting substrate 112 of the solar cell module 1 is excellent.
The solar cell module 1 is maintained without a decrease in the transmittance of sunlight incident from the solar cell module, and it is possible to prevent the energy conversion efficiency of the solar cell module 1 from decreasing. In addition, receiving frame 41a
Since the solar cell module 1 is pressed and sandwiched between the (joint receiving frame 42a) and the holding frame 41b (joint holding frame 42b) and installed on the roof surface, for example, a fixture is attached to the solar cell module 1. It is not necessary to provide an insertion hole or the like, so that labor required for processing can be saved, and construction can be performed easily and quickly.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there may be changes in the design without departing from the gist of the present invention. Is also included in the present invention. For example, in the above-described embodiment, the cutout portion is provided by being cut out in such a manner that the outer peripheral portion of the portion on the downstream side of the sealing member wraps around from the upper surface to the lower surface side via the side surface, but in addition or alone In the above-mentioned portion of the sealing member, a drain hole for guiding rainwater sprayed on the upper surface of the solar cell module main body to the rain gutter portion may be provided in the sealing member. Also,
In the above embodiment, the notch is provided on the downstream side of two opposing sides in a direction parallel to the flow direction of the roof surface of the sealing member. However, in addition or alone, the cutout portion is orthogonal to the flow direction of the sealing member. Singular or plural may be provided on one side on the downstream side. Also,
In order to provide a notch in the sealing member, in advance, a mold corresponding to the notch was provided in the mold, and the sealing member was integrally formed with the solar cell module body to obtain a solar cell module. After the molding, the cutout may be provided by processing the sealing member. In addition, the upper ridge and the lower ridge are provided on both upper and lower sides of the sealing member, but can be increased or decreased as needed. That is, it is not limited to double, but may be single,
Triple or more may be used. In addition, the protrusion may be provided on only one of the upper and lower surfaces, or the protrusion may be omitted altogether. Further, although a two-component mixed-curing type urethane resin is used as a material of the sealing member, an epoxy resin may be used. In addition, it is not necessary to use a two-component mixed curing type. For example, injection molding may be performed from a polyolefin-based resin composition such as polyethylene or polypropylene. In addition, for example, polycarbonate, polyamide, polyacetal, polyethylene terephthalate, chlorinated polyethylene, polystyrene, polyesteramide, polyphenylene sulfide, polyether ester, polyvinyl chloride, polymethacrylate, polyacrylate, polymethyl methacrylate, fluorine Resin, sulfone resin, ethylene-vinyl acetate copolymer,
Thermoplastics such as vinyl chloride-vinylidene chloride copolymer, polyvinyl butyral, polyvinylidene fluoride, and styrene-acryl copolymer may be used. Also,
Thermosetting plastics such as urea resin, melia resin, and melamine / phenol resin may be used, metal-containing plastics, and reinforced plastics compounded with glass fiber may be used. Further, synthetic rubber such as EPDM (ethylene-propylene-diene-terpolymer) may be used. The mounting frame member is not limited to aluminum, but may be steel, engineering plastic, or the like. The roof finishing material is not limited to a folded plate, and may be a slate or a tile. Further, the fixing tool for fixing the receiving frame to the roof surface is not limited to the screw, but may be a nail or the like. Furthermore, the solar cell incorporated in the solar cell module is not limited to a single crystal silicon solar cell, but may be a polycrystalline silicon solar cell or an amorphous silicon solar cell.

[0027]

As described above, according to the structure of the present invention, when the solar cell module is installed on the roof surface,
A drainage groove or drainage hole for discharging rainwater to be sprayed, at least on the eaves side of the linear part on at least one of the two linear parts of the sealing member facing each other in a direction perpendicular to the inclination direction. Is provided, the rainwater is quickly drained without being hindered by a step at a portion sealed by a sealing member on the eaves side on the upper surface of the solar cell module main body. Therefore, rainwater hardly stays for a long time in the portion sealed by the eave-side sealing member on the upper surface of the solar cell module main body. Also, since the dirt carried by the rainwater does not remain on the upper surface of the solar cell module after the evaporation of the rainwater, the appearance is excellent and the transmittance of sunlight incident from the surface cover material of the solar cell module is improved. It is maintained without lowering, and it is possible to prevent the energy conversion efficiency of the solar cell module from lowering. The above-described effects become more remarkable as the inclination angle of the roof surface becomes gentler.

[Brief description of the drawings]

FIG. 1 is a plan view of a solar cell module according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a cross-sectional view of the solar cell module main body of this example.

FIG. 5 is a perspective view of a mold used for manufacturing the solar cell module.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a sectional view taken along the line EE in FIG. 5;

FIG. 9 is a cross-sectional view showing a schematic configuration of an injection molding device used for manufacturing the solar cell module.

FIG. 10 is a process explanatory view for describing the method for manufacturing the solar cell module.

FIG. 11 is an exploded perspective view showing the mounting structure of the solar cell module in an exploded manner.

FIG. 12 is a plan view showing a state where the solar cell module is mounted on a roof surface.

13 is an enlarged sectional view taken along line FF of FIG.

FIG. 14 is an enlarged sectional view taken along line GG of FIG. 12;

FIG. 15 is an enlarged sectional view taken along line HH in FIG.

FIG. 16 is an explanatory diagram for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell module 11 Solar cell module main body 111 Single crystal silicon solar cell (solar cell) 112 Transparent glass plate (front cover material) 114 Metal sheet (back cover material) 12 Sealing member 12a Notch (drainage groove) 121 Upper part Ridge 122 Lower ridge 41a Receiving frame (receiving frame member) 41b Holding frame (holding frame member) I Rain gutter S1 Mounting table S3, S6 Holding surface

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masafumi Kano 32 Wadai, Tsukuba, Ibaraki Prefecture Within Sekisui Chemical Co., Ltd. (72) Inventor Shota 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Sharp Corporation (72) Inventor Shigeru Sugita 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (72) Inventor Satoshi Fujii 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Sharp Corporation (56) References Special JP-A-7-202239 (JP, A) JP-A-7-122769 (JP, A) JP-A-2-20625 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04D 13 / 18 E04D 3/40 E04D 13/00

Claims (8)

(57) [Claims] 1. A solar cell comprising a transparent surface cover material,
A solar cell module obtained by sealing an end surface of a substantially rectangular solar cell module body sandwiched between a back cover material and a sealing member over the entire circumference, wherein an inner peripheral surface of the sealing member has A concave groove for sealing an end face of the solar cell module body over the entire circumference in a fitted state is formed, and a predetermined portion of the sealing member is a surface serving as a rain spray surface of the solar cell module body. A solar cell module comprising a drain groove or a drain hole for discharging rainwater from a surface of a cover material. 2. A single or multiple angular annular ridge protruding upward from an upper surface or downward from a bottom surface of the sealing member, and is provided at a predetermined portion of the sealing member. 2. The drainage groove is provided by notching the protrusion.
The solar cell module as described. 3. The drain groove, when the solar cell module is installed on a roof surface, is disposed on two sides of the sealing member that faces each other in a direction perpendicular to the direction of inclination of the solar cell module. The solar cell module according to claim 1, wherein the solar cell module is provided at least from the upper surface to the side surface at a portion on the eaves side of at least one of the linear portions. 4. The solar cell module according to claim 1, wherein the solar cell module is installed on a sloped roof surface such that the drainage groove or drainage hole is located on the eaves side. Equipped roof. 5. A method for mounting the solar cell module according to claim 1, 2, or 3 on an inclined roof surface, comprising a long mounting surface on which any one linear portion of the sealing member is mounted. A long surface, the lower surface of which is fixed to the inclined roof surface by a fixing tool, and a rain gutter portion for flowing rainwater is provided along the mounting surface and at a position lower than the mounting surface. A pair of receiving frame members, and a long pressing surface that presses the linear portion of the sealing member placed on the mounting surface of the receiving frame member from above, and the sealing member is formed by the pressing surface. Prepare a pair of long holding frame members that are respectively fixed to the receiving frame member by a fixture in a state where the linear portion is pressed, first, the pair of the receiving frame members are inclined in the direction of inclination of the sloped roof surface. At right angles to each other and at a certain distance from each other After being arranged and fixed on the inclined roof surface in an opposed state, the drainage passage of the solar cell module is arranged on the mounting surface of each of the pair of receiving frame members on the eaves side, and the sealing member of the solar cell module is Next, a pair of the holding frame members are covered from above the linear portion of the sealing member placed on the mounting surface, and these holding frame members are respectively held down. In a state where the linear portion of the sealing member is pressed by a surface, the linear member is fixed to the pair of receiving frame members by a fixing tool, and rainwater sprayed on the surface of the solar cell module main body passes through the drain groove or the drain hole. A method of attaching a solar cell module to a roof, wherein the pair of receiving frame members flow into the rain gutter. 6. A solar cell module unit, wherein a plurality of the solar cell modules according to claim 1, 2, or 3 are arranged and assembled with a frame member to form an integrated unit, wherein the plurality of solar cell modules are the solar cells. A long mounting surface for mounting the linear portion of the sealing member disposed at both ends of the module unit, along the mounting surface,
A pair of elongated receiving frame members provided with rain gutters for flowing rainwater at a position lower than the mounting surface; and the sealing mounted on the mounting surface of the receiving frame member. A long pressing surface which presses the linear portion of the member from above, and which is fixed to the receiving frame member by a fixture while the linear portion of the sealing member is pressed by the pressing surface. Elongated first and second mounting plates extending in parallel at a predetermined distance from each other for mounting opposing linear portions of a pair of holding frame members and sealing members of adjacent solar cell modules on both sides. Has a mounting surface,
A single or a plurality of elongate portions provided with rain gutters for flowing rainwater along the first and second mounting surfaces and at positions lower than the first and second mounting surfaces. A joint receiving frame member, and a first and a second elongated members for pressing the linear portions of the sealing members placed on the first and second mounting surfaces of the joint receiving frame member from above. A fixture provided between the first pressing surface and the second pressing surface in a state having a second pressing surface and pressing the linear portions of the respective sealing members by these pressing surfaces; A solar cell module unit, which is at least assembled with a long joint holding frame member fixed to the joint receiving frame member by a fixing tool inserted into the insertion hole. 7. A method for mounting the solar cell module unit according to claim 6, on a sloped roof surface, wherein the length of each of the receiving frame members, the joining receiving frame members, the holding frame members, and the joining holding frame members. The solar cell module unit is attached and fixed to the inclined roof surface by a fixing device so that the length direction is parallel to the inclination direction of the inclined roof surface, and the drainage channels of the plurality of solar cell modules are arranged on the eaves side. The rainwater sprayed on the surface of the solar cell module body flows into the rain gutter portion of the pair of receiving frame members and the joint receiving frame members via the drain grooves or drain holes. Characteristic method of mounting the solar cell module unit on the roof. 8. A roof mounted with a solar cell module unit, wherein the solar cell module unit according to claim 6 is installed on an inclined roof surface.