JP4141974B2 - Tile integrated solar cell module and terminal box - Google Patents

Description

  The present invention relates to a tile-integrated solar cell module installed on a roof or the like of a house, and more particularly to an arrangement method and structure of a terminal box.

  In the solar cell module, if it is a use for simply taking out the output, the output terminal may be extended from the side surface of the solar cell module, for example. However, when the solar cell module is placed on the roof and used as a solar power generation system, it is necessary to provide a terminal box on the solar cell module from the standpoint of reliability such as ensuring performance and safety.

  Normally, the terminal box consists of a housing, connection fittings, bypass diodes, and a lid, and wiring inside the module (output lead wire) for taking out the power to the outside and the outside for taking out the output from the output lead wire to the outside A distribution cable (output cable) is connected.

  And the terminal box is hot that occurs due to the relay between the output lead wire and the output cable, the strength that can withstand the tensile force between the output cable and the solar cell module, and the shade on the light receiving surface of the solar cell module. It plays the role and function as a place of installation of the bypass diode that serves as an avoidance circuit against the damage of the solar cell module due to the spot phenomenon or for some reason.

  FIG. 9 shows a state in which a terminal box is arranged in a conventional solar cell module.

  A solar cell module main body 80 shown in FIG. 9 is a laminate of a solar cell and a transparent substrate sandwiching the solar cell, a filler, and a back film 24. The back film 24 is provided with slits, and the slits are formed from the slits. An output lead wire (not shown) is sent out, and the output lead wire and the output cable 83 are connected inside a terminal box 82 attached to the back film 24. In addition, a solar cell module frame 81 is attached around the solar cell module main body 80 to constitute a solar cell module having sufficient strength as a whole.

  Thus, the solar cell module generates power when light strikes the solar cell light-receiving surface on the front surface, and the back side does not directly contribute to power generation, so the terminal box is fixed to the solar cell module body, and the fixing location thereof Is disposed on a weather-resistant sealing film on the back surface, which can provide sufficient adhesive strength. For this reason, the output lead wire of the solar cell module is sent from the solar cell to the back surface side of the solar cell module in a form that penetrates the filler and the back film on the back surface side of the solar cell module.

  Also, since the back side is usually not visible even when installed on a roof surface or with a building material integrated type, the position and routing of the terminal box and wiring member only need to satisfy its function electrically. Since the design property of is not questioned, it was installed on the back side of the module.

In recent years, a solar cell module integrated with a roof tile has been proposed as a building material having a power generation function that is excellent in economic efficiency, architectural functionality, and design and pursues design on the exterior (for example, , See Patent Document 1).
JP 2000-204717 A

  However, in a solar cell module (tile-integrated solar cell module) integrated with a roof tile having a form as shown in Patent Document 1, the shape of the solar cell module is matched with the shape of the roof tile. The area per module was small. Therefore, in order to obtain the required output, the number of solar cell modules inevitably increases, so the location and routing of terminal boxes and wiring members become complicated, and electrical work and equipment work on the roof is very There was a problem that it took time and effort.

  In addition, due to a shadow or some abnormality on the solar cell module, among the plurality of solar cell modules installed on the gradient roof, when some of the solar cell module output, or some of the output in the solar cell module decreases, A current flows through a bypass diode for bypassing the output incorporated in the solar cell module. In this case, there has been a problem that it is difficult to provide a small-sized terminal box with heat dissipation performance that can suppress the temperature rise due to heat generation of the bypass diode.

  Therefore, in addition to the reliability of the solar cell module, it has been strongly desired to solve the above problem from the viewpoint of safety of construction of the solar cell module and further from the viewpoint of disaster prevention.

  The present invention was devised to solve such problems, and an object thereof is to provide a roof tile-integrated solar cell module and a terminal box that can be easily constructed and have improved heat dissipation.

In order to solve the above problems, the roof tile-integrated solar battery module of the present invention is a solar battery module in which a solar battery module body composed of a plurality of solar battery cells arranged in a matrix is placed on a support substrate. In addition , a notch portion which is an opening is formed in a part of the support substrate, and a terminal box is attached to the notch portion.

  Accordingly, a tile-integrated solar cell module that can be easily installed on a tile roof, has improved heat dissipation, and has high reliability is provided.

  In other words, appropriate wiring is achieved by drawing the output lead wire for taking out the electric power from the solar cell module body to the terminal box installed in the solar cell module so that it fits in the notch provided on the support substrate. The roof tile-integrated solar cell module can be constructed safely and quickly. In addition, the support substrate has a structure in which the solar cell module body is fitted and fixed, so that the solar cell module body can be easily attached and detached while ensuring sufficient mechanical strength and reliability. it can. Therefore, the solar cell module main body can be easily replaced not only after construction but also after construction. In addition, since the terminal box is installed in a notch provided in the support substrate, the terminal box can have a large shape, and a bypass diode for bypassing the output can be arranged in the terminal box. Furthermore, since the area which a terminal box and a solar cell module main body contact by the said structure can be enlarged, it becomes possible to discharge | release the heat | fever which generate | occur | produces from a bypass diode efficiently outside.

  In the above configuration, the notch is preferably formed at the end of the support substrate, and the terminal box is attached so as to contact from the back surface to the end surface of the solar cell module body.

  This improves the workability of the routing of the wiring, and when the output cable for taking out the output from the output lead wire is extended to another adjacent solar cell module, the output cable is connected to the solar cell module. Since it does not enter the back side, it is easy to extend the output cable.

Further, in the roof tile-integrated solar cell module of the present invention, in order to increase the contact area between the terminal box and the solar cell module body, the casing of the terminal box has a substantially L shape in side view. And a second surface in contact with the end surface of the solar cell module main body, and an output lead wire is provided on the second surface of the housing that is substantially L-shaped in side view. It is also characterized in that a hole to be inserted is provided and a hole for inserting the output cable is provided on a surface facing the second surface.

In this case, the direction in which the output cable connected to the terminal box extends may be determined as appropriate. However, when the roof tile-integrated solar cell module is installed on the sloped roof, the output cable extends from the eaves side to the ridge side. When an eave with a sloped roof is seen as the front end of the roof, the structure in which the output cable extends in the rear direction of the tile-integrated solar cell module can be realized. In addition, the notch provided in the support substrate is preferably provided so as to be located on the ridge side of the roof.

  Accordingly, a tile-integrated solar cell module and an overlapping portion between the roof-integrated solar cell module and the roof tile or solar cell module installed on the ridge side in the roof flow direction (vertical direction), that is, the ridge side The notch and terminal box of the support substrate can be positioned on the back side of the roof tile or the tile-integrated solar cell module so that the notch and the terminal box are not exposed to the roof tile eaves side. it can. In addition, since the hole through which the output lead wire is inserted is provided on the second surface, the output lead wire can be more easily drawn into the terminal box.

  Further, in the roof tile-integrated solar battery module having the above-described configuration, a connection fitting for connecting an output lead wire, an output cable, and a bypass diode for bypassing the output is provided inside the casing of the terminal box. The connection fitting is composed of a first connection fitting and a second connection fitting, and one of the connection fittings is larger than the other connection fitting. Yes.

  Thereby, the heat generated from the terminal box can be radiated more efficiently. Further, since the amount of heat generated from the bypass diode is large, when the bypass diode is arranged inside the terminal box casing, the bypass diode is provided with a heat sink, and the heat sink is larger than the first or second connecting fitting. It is preferable to contact one of the connection fittings.

  The terminal box of the present invention is a terminal box attached to a solar cell module on which a solar cell module body composed of a plurality of solar cells arranged in a matrix is mounted, and the casing of the terminal box is viewed from the side. It is substantially L-shaped and has a first surface that adheres to the back surface of the solar cell module main body and a second surface that contacts the end surface of the solar cell module main body.

  Thereby, since the adhesion area between a solar cell module main body and a terminal box can be enlarged, a terminal box can be simply and stably attached to a solar cell module, and heat dissipation improves. Moreover, the output lead wire of the solar cell module extending from the side end portion of the solar cell module body can be easily drawn into the terminal box.

  In the terminal box configured as described above, a hole through which the output lead wire is inserted is provided in the second surface of the housing, and a hole through which the output cable is inserted is provided in a surface opposite to the second surface. It is preferable that As a result, for example, in a general construction method in which the roof tile and the solar cell module are spread from the eave side to the ridge side of the sloped roof, the output cable of the solar cell module enters the back surface of the solar cell module or the roof tile. The output cables of adjacent solar cell modules can be easily connected.

  Further, in the terminal box having the above-described configuration, a connection fitting for connecting the output lead wire, the output cable, and the bypass diode is provided in the terminal box so as to be substantially parallel to the first surface of the terminal box. It consists of one connection fitting and a second connection fitting, and either one of the connection fittings is larger than the other connection fitting.

  According to this, the output lead wire and the output cable can be connected by an appropriate method through the connection fitting, and the heat generated when the bypass diode is energized can be efficiently passed through the connection fitting. It can be released from the body to the outside. At this time, the 1st connection metal fitting can be shape | molded in one plate shape as large as possible within the specification of a terminal box, and can improve the heat dissipation of a terminal box.

  In this case, the large connecting metal can serve as the main heat sink and the other connecting metal can serve as the auxiliary heat sink, and the bypass diode having a large calorific value is the heat sink provided in the bypass diode. It is preferable that the larger one of the first and second connection fittings is in contact with the connector.

  At this time, the fixing method of the bypass diode may be determined as appropriate, but it is not performed using an adhesive from the viewpoint that heat dissipation and electrical characteristics are not impaired between the bypass diode and the connection fitting. It is desirable to fix using a holding member such as a screw. Alternatively, a high thermal conductivity resin or the like may be applied in advance to the contact surface between the bypass diode and the connection fitting, and then both may be fixed. As a result, the airtightness of the part is ensured, and even if the terminal box is filled with a resin having low thermal conductivity for the purpose of improving the insulation, the resin is interposed between the bypass diode and the connection fitting. There is no worry of getting in, thereby preventing a decrease in heat dissipation performance.

  Further, in order to more reliably and appropriately fill the resin into the terminal box, the inside of the terminal box is divided into two storage portions by a partition plate, and the first and second storage portions are provided in one of the storage portions. The majority of the connection fitting and the bypass diode are accommodated, and the other accommodation portion accommodates the mounting portions of the first and second connection fittings, that is, the remaining portion of the connection fitting extending from the other accommodation portion. It is preferable to configure.

  If comprised in this way, after attaching a terminal box to a solar cell module main body, according to the structure of the terminal box of this invention, resin will be filled with the 1st accommodating part which resin is difficult to wrap around in the whole, and in this state After the terminal box is attached to the solar cell module, the output lead wire of the solar cell module and the output cable for connecting to the adjacent solar cell module are drawn into the second storage part of the terminal box, and these are connected. The storage portion can be filled with resin.

  According to the roof tile-integrated solar battery module of the present invention, not only has the design, but also its structure is simple and can be easily applied to the roof. Moreover, heat dissipation is improved, and high performance and safety are ensured. Furthermore, according to this structure, the process of inserting the output lead wire from the back surface of the solar cell module, which was included in the conventional manufacturing process of the solar cell module body, is not required, and the manufacturing process of the solar cell module body is simplified. It becomes.

  Also, in the construction, by drawing the output lead wire into the terminal box installed in the notch provided on the support substrate, the appropriate wiring can be easily routed, and the roof tile integrated type can be safely and quickly. A solar cell module can be installed. For this reason, in the construction method in which the roof tile and the tile-integrated solar cell module of the present invention are spread from the eave side of the sloped roof to the ridge side, the output cable of the tile-integrated solar cell module is connected to the tile-integrated solar cell module or The output cables of adjacent tile-integrated solar cell modules can be easily connected without entering the back surface of the roof tile. In addition, since the support substrate or the auxiliary member attached to the support substrate has a structure for fitting and fixing the solar cell module main body, the solar cell module main body is attached after ensuring sufficient mechanical strength and reliability. , Can be removed easily. Therefore, the solar cell module main body can be easily replaced not only after construction but also after construction.

  According to the terminal box of the present invention, since the adhesion area between the solar cell module body and the terminal box can be increased, the terminal box can be easily and stably attached to the solar cell module, and can be bypassed. It is possible to provide a highly reliable terminal box with improved performance and safety due to improved heat dissipation of the diode against heat generation. Furthermore, this terminal box can easily draw the output lead wire of the solar cell module extending from the side end of the solar cell module body into the terminal box.

  In addition, when filling the resin into the terminal box, the resin can be filled more reliably and appropriately by dividing the inside of the terminal box into two storage portions by the partition plate.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic configuration of a roof tile-integrated solar cell module according to the present embodiment, FIG. 2 is an assembled structure of side components of the roof tile-integrated solar cell module 1 shown in FIG. 1, and FIG. FIG. 4 shows a schematic configuration of the solar cell module body 20 shown in FIG. 1.

  A roof tile-integrated solar cell module (hereinafter also referred to as a “solar cell module”) 1 shown in FIG. 1 has a flat solar cell module body 20 mounted and fixed on the surface of a substantially roof tile-shaped support substrate 10. ing. At this time, the output lead wire 25 is pulled out from the end face 20a of the solar cell module body 20. A terminal box 30 is arranged at substantially the center of the end face 20 a from which the output lead wire 25 is drawn, and two output cables 70 are extended from the terminal box 30.

  Below, the main members which comprise the solar cell module 1 are demonstrated.

As shown in FIG. 3, the support substrate 10 that supports the solar cell module main body 20 is formed in substantially the same outer shape as a roof tile that is wound around the solar cell module 1 in a sloped roof. A notch 11 that is a rectangular opening for accommodating the terminal box 30 is provided at one end 10 a of the support substrate 10. Further, the other end portion 10b of the support substrate 10 is covered so that one side portion of the solar cell module main body 20 is not exposed, and a cover 60 for fixing the solar cell module main body to the support substrate is attached. (See FIG. 1). The support substrate 10 is made of a non-combustible material. For example, the support substrate 10 may be formed by processing a metal such as iron or aluminum, or an alloy thereof, or in addition to ceramics such as ordinary roof tiles, cement, or fibers. You may shape | mold using resin with sufficient intensity | strength, such as a reinforced plastic.

  Moreover, the solar cell module main body 20 arrange | positions the photovoltaic cell group 21 which connected the some photovoltaic cell arrange | positioned at matrix form electrically in series or in parallel, as shown in FIG. Here, a transparent substrate 23 made of a glass plate is laminated on the surface side of the solar cell group 21, that is, on the light-receiving surface side, with a filler 22 configured in a thin flat plate shape with a transparent resin. Here, a glass plate is used as the transparent substrate 23, but the present invention is not limited to this, and any flat plate material having excellent translucency and weather resistance may be used. Moreover, the back film 24 is laminated | stacked also on the back surface side of the photovoltaic cell group 21 via the filler 22 comprised by the thin flat plate shape by transparent resin, and the flat plate solar cell module main body 20 is comprised as a whole. Yes.

  In addition, each photovoltaic cell is connected by the cell interconnector etc. by the conventional method.

  Thus, since the solar cell module 1 has a structure in which the solar cell module main body 20 is fitted and fixed to the support substrate 10, the solar cell module main body is secured with sufficient mechanical strength and reliability. 20 can be easily attached and detached. Therefore, the solar cell module body 20 can be easily replaced not only during the construction but also after the construction.

  Further, the terminal box 30 has a substantially L shape in side view, and is accommodated in a notch 11 provided in the support substrate 10 so as to be arranged from the end surface 20a to the back surface 20b of the solar cell module body 20. (See FIG. 1).

  Below, the structure of a terminal box is demonstrated in detail.

  5 is a perspective view of the casing 31 of the terminal box, FIG. 6 is a sectional view showing the internal structure of the terminal box 30, and FIG. 7 is an exploded perspective view showing the entire structure of the terminal box 30.

  The terminal box 30 includes a hollow housing 31 that is substantially L-shaped when viewed from the side, and connection fittings 72 and 73 provided with a resin mold type bypass diode 71 housed in the housing 31.

  The housing 31 is formed in a substantially L shape in a side view, and includes a main body portion 32 having a shape in which the entire bottom surface and a part of the upper surface are opened, and an upper opening portion 321 formed on the upper side of the main body portion 32. The upper lid 33 is closed, and the lower lid 41 is closed on the lower opening 322 formed on the lower side of the main body 32. The lower lid 41 further includes a first lid 41a and a second lid 41a. It consists of a lid 41b.

  The main body 32 includes a front side plate 32a, a rear side plate 32b formed to be higher than the front side plate 32a, left and right side plates 32c and 32d formed in a substantially L shape in side view, and L shapes of left and right side plates 32c and 32d. Formed by a horizontal plate (first surface) 32e and a vertical plate (second surface) 32f formed along the upper edge of the shape. The upper end of the vertical plate 32f, the upper end of the rear plate 32b, and the left and right side plates A portion surrounded by the upper ends of the L-shaped portions 32c and 32d is an upper opening 321.

  The vertical plate 32f is provided with a pair of holes 34 and 34 for drawing the output lead wires 25 (see FIG. 1) of the solar cell module 1 into the terminal box 30, and faces the vertical plate 32f. The rear plate 32b is provided with a pair of holes 35, 35 for drawing the output cable 70 (see FIG. 1) into the terminal box 30.

  When the casing 31 is in the above-described form, the output lead wire 25 can be appropriately and easily drawn into the terminal box 30. Moreover, the output cable 70 extended from the terminal box 30 can be easily accommodated between the support substrate of the other solar cell module arrange | positioned adjacent to the flow direction of a roof, and a roof surface. And by being able to perform such wiring, the process of inserting the output lead wire included in the manufacturing process of the conventional solar cell module body 80 (see FIG. 9) from the back surface of the solar cell module becomes unnecessary. The manufacturing process of the battery module main body can be simplified.

  Further, since the terminal box 30 can be bonded to the solar cell module main body 20 by two surfaces of the horizontal plate 32e and the vertical plate 32f that are orthogonal to each other, the terminal box 30 can be reliably and easily attached.

  The pair of holes 34 and 34 may be formed in an appropriate size that allows the output lead wire 25 to be smoothly drawn into the terminal box 30. Specifically, as a result of a trial production in which a slit-shaped hole having a width 5 mm wider than the width of the output lead wire is provided on the side surface of the terminal box and drawing the output lead wire, the lead of the output lead wire is good. I confirmed that I can do it. In addition, as long as it has this function, the shape of one hole 34 and 34 may be a slit shape similar to the cross-sectional shape of the output lead wire 25, or may be a notch shape having an opening at the upper end of the water straight plate 32f. .

  Further, the inside of the terminal box 30 is partitioned into two storage portions 37 and 38 by an upper partition plate 36 extending downward from the lower end portion of the vertical plate 32f, and the lower opening of the first storage portion 37 is opened. The first lid body 41a closes the opening, and the lower opening of the second storage section 38 is closed by the second lid body 41b. In addition, a lower partition plate 44 is formed in the second lid body 41b at a position facing the upper partition plate 36 when the opening is closed, and the first storage portion 37, the second storage portion 38, and the like. The upper partition plate 36 and the lower partition plate 44 are partitioned so as to leave a gap through which connection fittings 72 and 73 described later can be inserted.

  Furthermore, bosses 42, 42, 42, 42 for fixing the connection fittings 72, 73 are formed on the second lid body 41 b. 42 is fixed with screws or the like (not shown).

  The flat connection fittings 72 and 73 are for connecting the output lead wire 25, the output cable 70, and the bypass diode 71 of the solar cell module, and are provided substantially parallel to the horizontal plate 32e of the housing 31. . Further, as shown in FIG. 7, one connection fitting (first connection fitting) 72 is larger than the other connection fitting (second connection fitting) 73 and is formed in an L shape in plan view. By these connection fittings 72 and 73, a surface corresponding to the back side of the horizontal plate 32 e is substantially covered inside the housing 31.

  As described above, the first connection fitting 72 is made larger than the second connection fitting 73, and a larger amount of heat is transmitted to the first connection fitting 72 than the second connection fitting 73. The connection fitting 72 can serve as a main heat sink, and the second connection fitting 73 can serve as an auxiliary heat sink.

  The bypass diode 71 has a heat radiating plate 75. When the bypass diode 71 is assembled into the housing 31, the bypass diode 71 is in close contact with the first connection fitting 72 through the heat radiating plate 75 of the bypass diode 71. It is fixed. Although this fixing method may be determined as appropriate, an adhesive is used from the viewpoint that heat dissipation and electrical characteristics are not impaired between the bypass diode 71 and the first connection fitting 72 and the second connection fitting 73. Instead, it is desirable to fix using a holding member such as a screw.

  Since the bypass diode 71 is attached in this manner, heat generated when the bypass diode 71 is energized is easily radiated from the housing 31 of the terminal box 30 to the outside through the connection fittings 72 and 73.

  At this time, a high thermal conductivity resin or the like may be applied in advance to the contact surface between the bypass diode 71 and the connection fitting 72 and then both may be fixed. Thereby, even when the resin having low thermal conductivity is filled in the terminal box 30 in order to improve water resistance and insulation, there is no fear that the resin enters between the bypass diode 71 and the connection fitting 72, and the heat dissipation performance is improved. Decline can be prevented.

  Further, for the purpose of improving the water resistance and insulation of the terminal box 30, the terminal box 30 may be filled with a resin having an appropriate viscosity.

  As described above, the terminal box 30 (more precisely, “housing 31”) includes the upper opening 321, the lower opening 322, and three lids (first lid 41a, second lid 41b, upper lid). By having the body 33) and being divided into the two storage portions 37, 38, the resin filling into the terminal box 30 can be performed more reliably and appropriately.

  That is, when filling the resin in the terminal box, the method of filling the resin from the upper opening 321 after attaching the terminal box 30 to the solar cell module body 20 makes it difficult to fill the resin due to the structure of the housing 31. First, the first storage portion 37 is filled with resin, and in this state, the terminal box 30 is attached to the solar cell module body 20 and is adjacent to the output lead wire 25 of the solar cell module in the second storage portion 38 of the terminal box. After pulling in the output cable 70 for connecting to the solar cell module and connecting them, the second storage portion 38 can be filled with resin.

  The first storage portion 37 and the second storage portion 38 are partitioned by the upper and lower partition plates 36 and 44 leaving a gap through which the connection fittings 72 and 73 can be inserted. It becomes possible to reliably fill the resin only in the case.

  Here, an operation procedure for assembling the terminal box 30 and attaching it to the solar cell module body will be described.

  First, the lower opening 322 of the second storage part 38 is first closed by the second lid 41b, and then the lower opening 322 of the first storage part 37 is closed. Next, the output cable 70 and the output lead wire 25 are connected via the attachment portions 74 of the connection fittings 72 and 73 using the upper opening 321 of the second storage portion 38, and finally the upper lid 33 The terminal box 30 is closed and the assembly work of the terminal box 30 is completed. However, after connecting the output cable 70 and the output lead wire 25, the second storage portion may be filled with resin. In this case, since the pair of holes 34 are not excessively large as described above, the resin filled in the terminal box 30 does not flow out of the hole 34 excessively. However, a sealing member that fills the opening of the hole 34 after the output lead wire 25 is drawn in may be attached to ensure that the filling resin does not flow out of the hole 34 as necessary.

  The second lid body 41b and the main body portion 32 are not separated, and the resin can be filled in the same manner even in an integrally molded structure.

  Below, the condition which installs the solar cell module 1 of the structure demonstrated above on a roof is demonstrated.

  FIG. 8 is a perspective view showing a state in which the solar cell module 1 and the roof tile are installed on a sloped roof.

  When the solar cell module 1 is installed on the sloped roof 90, the solar cell module 1 is rearward when viewed from the eave side of the sloped roof to the ridge side, that is, when the eaves of the sloped roof 90 are viewed as the front end of the roof. Since the output cable 70 extends so that the output cable 70 of the solar cell module does not enter the back surface of the solar cell module 1 or the roof tile 90, the output cables 70 of adjacent solar cell modules 1 are connected to each other. Can be easily performed.

  Moreover, when constructing the solar cell module 1 on the roof 90, as can be seen from FIG. 8, the solar cell module 1 is installed on the ridge side in the flow direction (vertical direction) of the roof 90 with respect to the solar cell module 1A and the solar cell module 1A. The notch portion 11 and the terminal box 30 of the support substrate 10 are positioned on the overlapping portion S with the roof tile 91A or the other solar cell module 1B, that is, on the back side of the roof tile 91A or the other solar cell module 1B on the ridge side. It is possible to prevent the notch 11 and the terminal box 30 from being exposed to the eaves side 90a of the roof tile 91A.

  In this case, the notch 11 is not enlarged unnecessarily, and the outer dimension of the notch 11 is slightly larger than the outer dimension of the terminal box 30, so that the end 11 a of the notch 11 (see FIG. 3). ) And the terminal box 30 can be provided with an appropriate clearance.

  Due to this clearance, the displacement of the attachment position of the terminal box 30 that occurs in the manufacturing process of the solar cell module body 20, the adhesion that occurs around the terminal box 30 when the terminal box 30 is adhered and fixed to the back surface 20 b of the solar cell module body 20. It is possible to cope with the protrusion of the agent, the shift of the position of the notch portion 11 in the support substrate 10, and the like. Therefore, the nonflammability of the roof 90 on which the solar cell module 1 is rolled is not harmed.

  Specifically, the terminal box 30 is attached to the support substrate 10 of the solar cell module main body 20 by performing a prototype in which the cutout portion 11 having a size obtained by adding a clearance of 3 mm to the end portion 11a of the cutout portion 11 is performed. As a result of the work, it was confirmed that the mounting state was very good.

  Moreover, when the solar cell module main body 20 is damaged for some reason after installation, the solar cell module main body 20 must be replaced. At that time, it is very difficult and troublesome to remove the roof tile 91 and the solar cell module 1 in order in the reverse order of the construction, so only the solar cell module main body 20 in which a problem has occurred is obtained. It is desirable that it can be replaced as a single unit. If it is said structure, the solar cell module main body 20 can be replaced | exchanged with the support substrate 10 being fixed to the roof 90, and even in that case, just pulling out the solar cell module main body 20 toward the eaves side of the gradient roof 90. The output cable 70 can be smoothly pulled out from the cutout portion 11 of the support substrate 10, and the solar cell module body 20 can be easily replaced.

1 is a perspective view schematically showing an overall configuration of a roof tile-integrated solar battery module according to an embodiment of the present invention. It is a side view which shows the assembly | attachment structure of the structural member of the roof tile-integrated solar cell module which concerns on embodiment of this invention. It is a perspective view of the support substrate of the roof tile-integrated solar cell module according to the embodiment of the present invention. It is a disassembled perspective view of the solar cell module main body of the roof tile-integrated solar cell module according to the embodiment of the present invention. It is a perspective view of the housing | casing of the terminal box which concerns on embodiment of this invention. It is sectional drawing which looked at the terminal box containing the connection metal fitting concerning an embodiment of the invention from the side. It is a disassembled perspective view of the terminal box which concerns on embodiment of this invention. It is a perspective view which shows a mode that the tile-integrated solar cell module and roof tile which concern on embodiment of this invention were installed in the gradient roof. It is a perspective view which shows schematic structure of the conventional solar cell module.

Explanation of symbols

1 roof tile integrated solar cell module 10 support substrate 10a one end portion 10b of support substrate other end portion 11 of support substrate notch 20 solar cell module main body 20a end surface 20b of solar cell module main body back surface 21 of solar cell module main body solar cell Group 22 Filler 23 Transparent substrate 24 Back surface film 25 Output lead wire 30 Terminal box 31 Housing 32 Main body 32a Front side plate 32b Rear side plate 32c, 32d Left right side plate 32e Horizontal flat plate (first surface)
32f Vertical plate (second surface)
321 Upper opening 322 Lower opening 33 Upper lid 34, 35 Hole 36 Upper partition plate 37 First storage portion 38 Second storage portion 41 (41a, 41b) Lower lid body 42 Boss 44 Lower partition plate 60 Cover 70 Output Cable 71 Bypass Diode 72 First Connection Fitting 73 Second Connection Fitting 74 Connection Fitting Attachment 75 Heat Dissipator 80 Conventional Solar Cell Module Body 81 Conventional Solar Cell Module Frame 82 Conventional Terminal Box 83 Conventional Output cable 90 sloped roof 91 roof tile

Claims (9)

A solar cell module in which a solar cell module body composed of a plurality of solar cells arranged in a matrix is placed on the surface of a support substrate,
The notches an opening in a portion of the supporting substrate is formed, and the terminal box attached to the notch, the housing of the terminal box, the contact with the back surface of the solar cell module body 1 and a second surface in contact with a side end surface of the solar cell module main body, and an output lead wire for taking out electric power from the solar cell module main body to the outside on the second surface of the casing. A roof tile provided with a hole through which an output cable for taking out an output from the output lead wire is provided on a surface facing the second surface. Integrated solar cell module.   The said notch part is formed in the edge part of the said support substrate, and the said terminal box is attached so that it may contact from the back surface of the said solar cell module main body to a side end surface. Tile integrated solar cell module. A connection fitting for connecting each of the output lead wire, the output cable, and a bypass diode for bypassing the output is provided in the housing of the terminal box substantially parallel to the first surface. 2. The roof tile-integrated solar cell module according to claim 1, comprising a first connection fitting and a second connection fitting, wherein one of the connection fittings is larger than the other connection fitting . 4. The roof tile according to claim 3 , wherein the bypass diode is provided with a heat radiating plate, and the heat radiating plate is in contact with a larger one of the first and second connection fittings. Body type solar cell module. A terminal box attached to a solar cell module on which a solar cell module body composed of a plurality of solar cells arranged in a matrix is placed,
It has a substantially L-shaped housing in side view, and has a first surface that adheres to the back surface of the solar cell module body and a second surface that contacts the end surface of the solar cell module body. And terminal box. The second surface of the housing is provided with a hole through which an output lead wire for taking out electric power from the solar cell module main body is inserted, and the surface opposite to the second surface is provided with the hole 6. The terminal box according to claim 5, wherein a hole through which an output cable for taking out an output from the output lead wire is inserted is provided. A connection fitting for connecting the output lead wire, the output cable, and a bypass diode for bypassing the output is provided in the casing so as to be substantially parallel to the first surface. The terminal box according to claim 5, wherein the terminal box includes a connection fitting and a second connection fitting, and any one of the connection fittings is larger than the other connection fitting . A bypass diode is disposed inside the housing, and the bypass diode is provided with a heat radiating plate, and the heat radiating plate is in contact with the larger one of the first and second connection fittings. The terminal box according to claim 7 . The inside of the housing is divided into two storage parts by a partition plate, and most of the first and second connection fittings and the bypass diode are arranged in one of the storage parts, The terminal box according to claim 8 , wherein mounting portions for the first and second connection fittings are disposed in the storage portion .

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