JP3887997B2 - Roof with power generation function and power cable device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roof with a power generation function and a power cable device suitable for a solar power generation system.
[0002]
[Prior art]
As a roof with a power generation function in a solar power generation system, for example, there is one in which a dedicated gantry is attached in advance on a roof base plate of a house or the like, and solar cell modules are sequentially attached on the gantry. An output unit for outputting the generated DC power is provided on the back side of each module, and the DC power is connected to the output unit of the end module among a plurality of modules in which the output units are connected in series with each other. The power cable is integrated into an indoor inverter, where it is converted into alternating current and then supplied to the indoor electrical wiring. The power cable extends between the module and the base plate along the arrangement of the modules, and the connection terminal at the tip of the power cable is connected to the output section on the back side of the module when a predetermined module is installed.
[0003]
[Problems to be solved by the invention]
By the way, in the state where the power cable is placed on the base plate, the wiring is disturbed and the work is hindered. Therefore, normally, an opening is formed in the side wall portion of the gantry, and the power cable is installed in the gantry. A wiring structure is adopted in which the modules are sequentially installed on the gantry and the modules are sequentially installed, and the connection terminal of the power cable is connected to a predetermined output unit.
However, the frame is originally provided with a structure for firmly supporting the solar cell module on the roof body while fully considering the rain, and further opening an opening for inserting the power cable. Considering waterproofing and dustproofing for power cables, the structure becomes very complicated, and there is a problem that cost increases are inevitable.
[0004]
On the other hand, in recent years, solar cell modules that can be installed on a base plate independently by omitting the above-mentioned mounts and individually providing a mounting base are becoming mainstream. When such a completely independent type solar cell module is used, the power cable is previously placed on the ground plate along a predetermined arrangement of the solar cell modules, and each solar cell module is sequentially placed so as to straddle it. It will be erected.
In this way, the power cable that is still placed on the ground plate is broken when the distorted cable is stepped on by the operator's feet when the solar cell module is installed. Inconveniences such as inability to take out between the already fixed solar cell module and the base plate are likely to occur, causing a reduction in work efficiency and a problem in terms of safety in construction.
[0005]
The present invention has been made in view of the present situation, and aims to provide a roof with a power generation function that can be safely and efficiently constructed, and a power cable device suitable for the roof.
[0006]
[Means for Solving the Problems]
As a result of diligent investigations to solve the above-mentioned problems, the present inventor has found that construction can be performed more safely and efficiently by devising the wiring structure of the power cable, and the present invention has been completed.
[0007]
That is, the present invention is provided on the back side of each solar cell module, a roof main body in which a base sheet is laid on a base plate, a plurality of solar cell modules arranged and installed along the outer surface of the base sheet of the roof main body. And a plurality of power cables interposed between the module and the roof body along the arrangement of the solar cell modules and connected to the predetermined output section, and temporarily fixing the power cables to the roof body Provided is a roof with a power generation function provided with temporary fixing means.
Here, the temporary fixing means refers to a means for restraining the power cable from being restrained on the roof body to prevent the posture from being disturbed on the roof, and includes the use of adhesive tape or staples.
In such a roof with a power generation function provided with a temporary fixing means, the power cable does not interfere with the work in installing the solar cell module, and the power cable is stepped on the operator's foot and the power cable is disconnected. In addition, it is possible to avoid the danger that the installer falls on the roof by stepping on the power cable in an unexpected position, and furthermore, the connection terminal at the end of the cable enters between the already fixed solar cell module and the ground plate and cannot be removed. It is avoided that the connection terminal is mistakenly connected to another.
[0008]
In particular, one or a plurality of thin projection pieces or a thin projection continuous over substantially the entire length is provided on the outer surface of the power cable along the longitudinal direction, and the temporary fixing means includes the projection pieces or the projections. If it is composed of nails, screws or staples that are fixed to the roof body, or a combination of these, it is possible to temporarily fix them with hand-held nails, screws, staples, etc. without using adhesive tape that is easy to roll on an inclined roof. Thus, work efficiency is improved.
The thin protrusion is preferably provided at a position at least 50 to 300 mm away from the tip of the connection terminal of the power cable. In this case, the connection terminal can be lifted when the power cable is connected, and the connection work can be performed. Easy and reliable. When the thin protrusion is provided at a position more than 300 mm away from the tip of the connection terminal, the connection terminal enters under the already installed solar cell module or mistakenly connects another connection terminal to the solar cell module. Such an inconvenience is likely to occur, and the effect of temporary fixing is reduced.
[0009]
As another aspect of the temporary fixing means, a temporary fixing material having a holding part that detachably holds a single or adjacent parallel power cables and a fixed part continuous to the holding part is configured. If the fixed part is fixed to the roof body by a nail, a screw or a stapler, or a combination thereof, it is not necessary to prepare a special power cable provided with a thin-walled protrusion as described above, This can be temporarily fixed on the roof efficiently using a normal power cable.
[0010]
Here, as the holding portion, a holding wall having a semicircular cross-section having a check function or a loop-like fastening band can be appropriately adopted, and such holding portion can be used each time during temporary fixing work. Although it may be attached to the power cable, it is preferable in terms of workability to be attached in advance to an appropriate portion of the cable before the power cable is provided.
[0011]
Further, as other means for fixing the fixed portion to the roof body, an adhesive surface is formed on the roof main body side of the fixed portion, or a function of holding the base sheet edge on the fixed portion is added. It is also preferable. The base sheet laid on the base plate usually has a waterproof and fireproof function, and when the fastening means as described above is configured, it is avoided or reduced to pierce the base sheet with nails or the like. , Good waterproof / fireproof effect can be maintained.
[0012]
In the case where the fixed portion is connected to the holding portion via a connecting member, there is some flexibility regarding the temporary fixing position of the power cable with respect to the expected arrangement of the solar cell modules, and the pole of the connection terminal Even when the vicinity is temporarily fixed, the connection terminal can be lifted at least by the longitudinal dimension of the connecting member.
[0013]
Such a holding portion is preferably mounted at a position at least 50 to 300 mm away from the front end of the connection terminal of the power cable, as in the case of providing a thin protrusion on the cable jacket.
[0014]
The present invention provides a predetermined output provided as a power cable suitable for the roof with the power generation function, provided between the roof body and the solar cell module installed on the roof body and provided on the back side of the solar cell module. A power cable device connected to a power supply unit, a power cable main body, a connection terminal provided at a tip of the power cable main body and connected to a predetermined output unit, and an outer side along a longitudinal direction of the power cable main body An electric power comprising a single or plural thin protrusions or a thin protrusion continuous over substantially the entire length provided on the surface and fixed to the roof body by nails, screws or staples, or a combination thereof. Provide a cable device.
In such a power cable device, as described above, it is possible to temporarily fix it on the roof body with a hand-held nail, screw, stapler, etc. without using an adhesive tape that easily rolls on an inclined roof. Thus, the work efficiency is remarkably improved.
Similarly, the thin protrusion is preferably provided at least at a position 50 to 300 mm away from the tip of the connection terminal. In this case, the connection terminal is connected when the power cable device is connected to the back surface side of the solar cell module. It can be lifted, and the connection work can be easily and reliably performed.
[0015]
Furthermore, if a crack guide portion is provided at the base end portion of the thin-walled projecting piece to separate the thin-walled projecting piece from the power cable body by the action of a predetermined tensile force, an operator may inadvertently place the power cable on the roof. Even if a leg is caught, the cable is separated from the thin protruding piece along the crack guide portion, so that the temporarily fixed state to the roof body is released, and the danger that the operator falls is avoided.
[0016]
Further, the present invention is a power cable device that is interposed between a roof body and a solar cell module installed on the roof body and connected to a predetermined output unit provided on the back side of the solar cell module, A power cable main body, a connection terminal provided at a tip of the power cable main body and connected to a predetermined output unit, and detachably holding the power cable main body, and a nail, a screw, a stapler, an adhesive or the like A power cable device comprising: a temporary fixing material that is fixed to the roof main body by combination, or a temporary fixing material that detachably holds the power cable main body and sandwiches the edge of the base sheet of the roof main body. Also provide.
Even in such a power cable device, it is possible to efficiently temporarily fix the roof on the roof, as described above, and to hold the temporary fixing material formed with an adhesive surface or the edge of the base sheet In the case of adding a function, it is avoided or reduced that the base sheet is pierced by a nail or the like, so that a good waterproof / fireproof effect can be maintained.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of a roof 1 with a power generation function according to the present invention, FIGS. 1 to 7 are a first embodiment of the present invention, FIGS. 8 and 9 are a second embodiment, and FIG. 10 is a third embodiment. 11 is a fourth embodiment, FIG. 12 is a fifth embodiment, FIG. 13 is a sixth embodiment, FIG. 14 is a seventh embodiment, FIG. 15 is an eighth embodiment, FIG. 16 is a ninth embodiment, and FIG. Reference numeral 17 denotes the tenth embodiment, where reference numeral 10 denotes a roof body, 2 denotes a solar cell module, and 3 denotes a power cable.
[0018]
First, the roof 1 with a power generation function according to the first embodiment of the present invention will be described with reference to FIGS. The roof 1 with a power generation function of the present invention includes a roof body 10 in which a base sheet 12 is laid on a base plate 11, and a plurality of solar cell modules 2 arranged and arranged along the outer surface of the base sheet 12. A plurality of output units 5 provided on the back side of each solar cell module 2 and a plurality of units interposed between the modules and the roof body 10 along the arrangement of the solar cell modules 2 and connected to a predetermined output unit 5 , And temporary fixing means 4 for temporarily fixing the power cable 3 to the roof body 10, the power cable 3 being provided on the ridge top 14 of the roof body 10 (not shown). It is introduced into the cabin space through the gap and connected to the indoor inverter.
The means for fixing the solar cell module 2 to the roof main body 10 is an appropriate fixing means such as one using a pedestal previously installed on the roof main body 10 or one provided with an individual support base for each solar cell module, as in the prior art. Can be adopted. In addition, a wide variety of photoelectric conversion elements such as single crystal silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells, compound semiconductor solar cells, and organic semiconductor solar cells can be used for the solar cell module.
[0019]
The base sheet 12 includes a waterproof layer in which a plurality of waterproof sheets such as asphalt roofing having a width of about 80 to 120 cm are partially laid on the surface of a field plate 11 such as a structural plywood, and a width on the waterproof layer. The solar cell module 2 and the power cable 3 are provided on two layers composed of a fireproof layer in which a plurality of rows of polyvinyl chloride covering sheets of about 80 to 120 cm are laid.
[0020]
The outline of the construction process of the solar cell module 2 will be described. First, on the base sheet 12 laid on the surface of the base plate 11, the roof body 10 is built in the gradient direction along the planned arrangement of the solar cell modules 2. A plurality of power cables 3 are extended from the side toward the eaves side, and each power cable 3 is restrained to the roof body 10 by using a temporary fixing means 4 so as not to be disturbed on the roof body 10.
Next, the solar cell module 2 is installed so as to straddle the power cable 3 in order from the ridge side of the roof body 10, and the power cable 3 is connected to each predetermined solar cell module 2 located at the start and end of series connection. By connecting each of the leading connection terminals, a series of solar cell modules is formed.
Similarly, after each system is sequentially formed, a wrapping or the like is covered along the ridge top portion 14 through which each power cable 3 is inserted indoors.
[0021]
The configuration of each part will be described in more detail below.
As shown in FIGS. 2 and 3, each solar cell module 2 installed on the roof body 10 is made of a metal such as a galvanium steel plate on a substantially entire surface except a portion where a terminal box 50 described later is installed on the back surface of the solar cell 20. The output unit 5 is configured by covering the plate plate 24 and providing a terminal box 50 in which two output cables having different polarities are extended from each other at substantially the center on the back surface side of the solar cell 20. A heat insulating backing material 28 made of foam or the like is fixed to each side of the metal plate plate 24 on both sides of the terminal box 50 with an adhesive, and exhibits an annealing effect as well as a buffering effect as a spacer. ing. Similarly, a support base 21 having an insertion groove 23 through which the output cable 51 and the power cable 3 are inserted is formed at the center of the eaves side end on the back surface of the metal plate 24. The solar cell module 2 that can be installed on the top is configured.
[0022]
As the solar cell 20, a transparent electrode layer such as tin oxide, an optical semiconductor layer, and a back electrode layer such as a metal are sequentially formed on the back surface of a horizontally long rectangular glass substrate of about 450 mm × 900 mm positioned on the surface, After each layer is patterned by laser processing, etc., a solar cell element in which a power generation part and a wiring part are formed is formed, and then the element is formed with a filler such as EVA (ethylene vinyl acetate copolymer) or a Tedlar film. The surface side is sealed and protected to form a thin-film solar cell. The optical semiconductor layer includes amorphous silicon a-Si, hydrogenated amorphous silicon a-Si: H, hydrogenated amorphous silicon carbide a-SiC: H, amorphous silicon nitride, etc. In addition, amorphous or microcrystalline amorphous silicon semiconductors made of alloys of silicon and other elements such as carbon, germanium, tin, etc. can be used for pin-type, nip-type, ni-type, pn-type, MIS-type, heterogeneous. A semiconductor layer synthesized into a junction type, a homojunction type, a Schottky barrier type, or a combination of these is used.
[0023]
The support base 21 is made of aluminum, and an inward flange 26 that abuts against the back surface of the metal plate plate 24 is formed to protrude along the width direction, that is, the longitudinal direction of the solar cell module 2. The metal plate plate 24 opens outward corresponding to a through hole (not shown) for the mounting screw 29 formed in a bent portion 24a formed by bending the eaves side end portion downward. Screw holes are provided. In the middle of the upper stage, there is a mounting groove 25 that opens outward along the longitudinal direction and receives and engages the ridge side end of the adjacent solar cell module 2 together with the metal plate plate 24 and the waterproof gasket 22. Is formed. That is, each solar cell module 2 is supported at the ridge side end by the mounting groove 25 of the support base 21 which is already adjacently fixed above the roof, and supports the eave side end by its own support base 21 fixed to the back side. In this state, they are sequentially arranged toward the bottom of the roof. On the bottom of the support base 21, an outward flange 27 that is fixed to the roof main body by mounting screws, nails or the like is also formed so as to protrude along the longitudinal direction.
[0024]
As shown in FIGS. 4 and 5, each of the solar cell modules 2 </ b> A, 2 </ b> B, 2 </ b> C connects the output cable 51 b and the output cable 51 c, and the output cable 51 d and the output cable 51 e through the waterproof connector 53. A power cable (not shown) separately connected from the eave side is connected to the output cable 51a of the solar cell module 2A connected in series and installed at the start end, and the output cable 51f of the solar cell module 2C installed at the end is connected. In this case, the power cable 3 disposed in a temporarily fixed state on the roof body 10 is connected by the prevention connectors 37 and 53 to form a series of series of solar cell modules.
[0025]
In the present embodiment, as the power cable 3 disposed on the back side of the solar cell module 2, the power cable device 30 in which the thin projection 33 is provided on the outer jacket surface along the longitudinal direction of the waterproof power cable body 31. The temporary fixing means 4 is configured by the thin protrusion 33 and the nail 40 for fixing the thin protrusion 33 to the roof body 10.
The power cable device 30 includes a male or female waterproof connector 37 that holds the connection terminal 32 at the tip of the power cable body 31, and the thin protrusion 33 is connected to the connection terminal 32 of the power cable body 31. It is provided at a position separated from the tip by a distance L = 50 to 300 mm, and other appropriate midway positions, and is integrally formed to a thickness of 0.8 to 3.0 mm by the same material as the outer cover of the power cable body 31. Even if an operator inadvertently hooks his / her foot on the power cable body 31, the thin protrusion 33 is easily cut to prevent falling on the roof. As a modification of the thin protrusion 33, as shown in FIGS. 6A and 6B, a crack guide portion such as a notch 34 and a cutting line 35 along the longitudinal direction is provided at the base end portion. Is also a preferred embodiment.
[0026]
Moreover, in order to avoid the inconvenience that the connection terminal 32 enters between the solar cell module 2 already installed together with the waterproof connector 37 and the roof body 10 and cannot be taken out, or other connection terminals are connected by mistake. It is necessary to provide at least one thin projection piece 33 in the vicinity of the connection terminal 32 and fix it to the roof body 10, but the protruding position on the power cable body jacket in this embodiment is the connection terminal as described above. By setting the distance L = 50 to 300 mm away from the tip of 32, the waterproof connector 37 is easily lifted. The present invention is not limited to this. For example, as shown in FIG. 7, a thin protrusion 33 </ b> A having a nail hole may be formed on the outer cover of a waterproof connector 37 that holds the connection terminal 32. .
[0027]
Next, a second embodiment of the present invention will be described based on FIGS. In the power cable device 30 according to the present embodiment, instead of the thin protrusion 33, a thin protrusion 36 that extends over substantially the entire length in the longitudinal direction of the power cable main body 31 is extruded to the outer cover of the power cable main body 31. It is formed integrally using. The thickness of the thin protrusion 36 is set to 0.8 to 3.0 mm as in the case of the thin protrusion described above, and is temporarily fixed by the thin protrusion 36 and the nail 40 that fixes the thin protrusion 36 to the roof body 10. Means 4 are configured.
In the roof 1 with the power generation function using such a power cable device 30, the thin protrusion 36 is continuous in the longitudinal direction, so that the position where the nail 40 is fixed is appropriately changed according to the situation. In addition, it is possible to efficiently temporarily fix a plurality of power cables by stacking adjacent thin ridges on each other, communicating them and fastening them with nails or the like. Since the other structure is basically the same as that of the first embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted.
[0028]
Next, a third embodiment of the present invention will be described based on FIG. The power cable device 30 according to the present embodiment is held at an appropriate position of the power cable main body 31 so as to hold the cable main body detachably and continuously to the holding section 7 and to the roof main body. A temporary fixing material 6 having a fixed portion 8 is provided, and the holding portion 7 constitutes a holding wall 70 having a semicircular cross section having a check function, and the fixed portion 8 A through-hole 81 through which the nail 40 is inserted constitutes a plate-like piece 80 that is previously drilled at a substantially central portion.
The temporary fixing material 6 is formed by bending a metal plate-like body in accordance with the outer diameter of the power cable main body 31 and connecting terminals on the outer cover of the power cable main body 31 before extending on the roof. 32 is held in advance at a distance L = 50 to 300 mm away from the tip of the tip 32 and other appropriate intermediate positions, and the temporary fixing work on the roof is performed simply by hitting the nail 40 on the roof body through the through hole 81. Shall.
The temporary fixing material 6 may be integrally formed with a synthetic resin instead of a metal, and in this case, it is not necessary to provide the through-hole 8 specially.
Since the other structure is basically the same as that of the first embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted.
[0029]
Next, a fourth embodiment of the present invention will be described based on FIG. The power cable device 30 according to the present embodiment is configured so that the fixed portion 8 of the temporary fixing member 6 is a roof of the plate-like piece 80 instead of drilling a through-hole penetrating a nail in the metal plate-like piece 80. An adhesive layer 82 that adheres to the base sheet is formed on the surface on the main body side.
The pressure-sensitive adhesive layer 82 is constituted by using a normal pressure-sensitive adhesive such as a silicone-based pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive, and a waxed release paper is adhered to the pressure-sensitive adhesive surface before use. If such a power cable device 30 is used, it is possible to avoid piercing the base sheet with a nail or the like, which is preferable in terms of rain.
[0030]
Next, a fifth embodiment of the present invention will be described based on FIG. The power cable device 30 in the present embodiment is provided with a clip 83 that clamps the eaves side edge portion 13 of the base sheet 12 as the fixed portion 8 of the temporary fixing material 6 instead of the metal plate-like piece 80. The clip 83 shown in the figure is one that sandwiches the base sheet in a direction along the longitudinal direction of the power cable body in accordance with the laying direction of the base sheet 12, but the present invention is not limited to this. The clip may be provided in another direction as appropriate in accordance with the laying direction of the base sheet. In this embodiment, as in the case of the fourth embodiment, it is possible to avoid piercing the base sheet with a nail or the like.
[0031]
Next, a sixth embodiment of the present invention will be described based on FIG. The power cable device 30 according to the present embodiment has a structure in which the holding portion 7 and the fixed portion 8 are integrally connected in addition to the structure having the holding portion 7 and the fixed portion 8 as the temporary fixing material 6. In this structure, the member 9 is provided. A metal chain 90 is used for the connecting member 9, and the power cable device 30 is temporarily fixed on the roof body in a state where there is play by the length of the chain 90. The present invention is not limited to the material and structure of the connecting member 9, and various ordinary connecting means such as strings, rubber, synthetic resin fine wires, and the like can be used. It is preferable to integrally mold the entire material with a synthetic resin material.
[0032]
Next, a seventh embodiment of the present invention will be described with reference to FIG. The power cable device 30 in the present embodiment is configured by forming a loop-shaped fastening band 71 that holds the power cable body 31 as the holding portion 7 of the temporary fixing material 6. The loop-shaped fastening band 71 is provided with a lock portion 73 having a locking function for locking the band-shaped body 72 after being inserted in the longitudinal direction on the base end side of the band-shaped body 72 made of synthetic resin. A fixed portion 8 to be fixed to the roof body by the nail 40 is continuously located at the tip of the band-shaped body 72 that has passed the portion 73.
[0033]
Next, an eighth embodiment of the present invention will be described with reference to FIG. The power cable device 30 according to the present embodiment is integrally formed with the first holding unit 7A and the first holding unit 7A that detachably hold the cable body at appropriate positions of the power cable body 31. A temporary fixing member 6 is provided in which a second holding portion 7A that continuously and detachably holds another power cable main body 31 arranged continuously and in parallel is integrally connected.
[0034]
Next, a ninth embodiment of the present invention will be described with reference to FIG. The temporary fixing means 4 in this embodiment is a temporary fixing material similar to that in the seventh embodiment, that is, a mechanism that locks the belt-like body 72 after inserting the belt-like body 72 in the longitudinal direction on the base end side of the belt-like body 72 made of synthetic resin. Temporary fixing material comprising a loop-like fastening band 71 provided with a lock part 73 having a stopping function, and a fixed part 8 that is continuously formed at the tip of the band-like body 72 and fixed to the roof body by a nail 40 6, a plurality of power cables 3,... When at least one power cable among the plurality of power cables is temporarily fixed to the roof body by a temporary fixing means that has been separately configured, the other power cables are already connected to the loop-shaped fastening band 71. Only by being bundled with the power cable temporarily fixed to the roof body, it is indirectly temporarily fixed to the roof body, and the fixed portion 8 and the nail 40 become unnecessary.
[0035]
Next, a tenth embodiment of the present invention will be described with reference to FIG. The temporary fixing means 4 in the present embodiment has a configuration in which the power cable 3 is temporarily fixed to the roof body via an adhesive material 41 that can be adhered to the base sheet 12, and butyl rubber is suitably used as the adhesive material 41. .
[0036]
As described above, the roof 1 with the power generation function of the present invention is obtained by temporarily fixing the power cable 3 on the roof body 10 by the temporary fixing means 4 and extends along a predetermined arrangement position of the solar cell modules 2. The plurality of power cables 3 to be installed are aligned on the roof without being disturbed by being restrained by the roof body 10 respectively, and the installation work efficiency of the solar cell module 2 is remarkably improved.
If a predetermined power cable among a plurality of adjacent parallel power cables 3, particularly a power cable extending to the eaves side on the roof body, is temporarily fixed to the roof body 2, the other power cables are the predetermined power cables. It is temporarily fixed temporarily also to the roof main body 10 only by restraining to.
In the third embodiment to the ninth embodiment, the power cable device 30 is shown in which the various temporary fixing materials 6 are mounted in advance at desired positions of the power cable body at the factory. It is also a preferred embodiment in terms of component management that the material 6 is attached to a power cable each time it is temporarily fixed on the roof.
The temporary fixing means of the present invention can be effectively used in the same manner even when the power cable 3 is disposed laterally on the roof body 10 or when a stand for fixing the solar cell module is provided.
[0037]
【The invention's effect】
  According to the present inventionAccording to the roof with the power generation function, since the power cable is temporarily fixed to the roof body, the power cable does not interfere with the work when the solar cell module is installed, and is stepped on by the operator's feet. Therefore, it is possible to prevent the risk that the power cable is disconnected or the operator falls by stepping on the power cable in an unexpected position, and the connection terminal at the end of the cable enters between the already fixed module and the ground plate and cannot be removed. It is possible to avoid the possibility of being possible and connecting the connection terminal to another by mistake.Further, it is not necessary to use an adhesive tape that is easy to roll on an inclined roof, and temporary fixing is possible only with hand-held nails, screws, staples, etc., and the efficiency of temporary fixing work can be improved.
[0040]
  In particular,A single or a plurality of thin-walled projecting pieces are provided on the outer surface of the power cable along the longitudinal direction of the power cable, and the thin-walled projecting pieces are separated from the power cable body by a predetermined tensile force at the base end portion of the thin-walled projecting piece. Since the crack guide portion to be separated is provided, the temporary fixing means is composed of the projecting piece and a nail, a screw, a stapler, or a combination thereof for fixing the protruding piece to the roof body. The danger that the operator falls on the roof when hooked is avoided.
[0041]
  Here, since the thin-walled projecting piece is provided at a position at least 50 to 300 mm away from the front end of the connection terminal of the power cable, the connection terminal can be lifted when connecting the power cable, so that the connection work can be performed easily and reliably. It can be made.
[0042]
  In addition, according to the power cable device of the present invention, it is possible to temporarily fix with a hand-held nail, screw, stapler, etc. without using an adhesive tape that is easy to roll on an inclined roof, improving the efficiency of the temporary fixing work. it can.
[0045]
  In particular,The thin-walled projecting piece comprises one or a plurality of thin-walled projecting pieces which are provided on the outer jacket surface along the longitudinal direction of the power cable body and are fixed to the roof body by nails, screws or staples, or a combination thereof. A crack guide that separates the thin-walled projecting piece from the power cable body by the action of a predetermined pulling force is provided at the base end of the power cable. You can avoid the danger of falling.
[0046]
  Here, since the thin projection piece is provided at a position at least 50 to 300 mm away from the tip of the connection terminal, it is possible to lift the connection terminal when connecting the power cable device to the back side of the solar cell module, Connection work can be easily and reliably performed.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a state in which a power cable is temporarily fixed on a roof base plate having a power generation function according to the present invention.
FIG. 2 is a partially broken perspective view showing the solar cell module according to the first embodiment of the present invention.
FIG. 3 is a cross-sectional view of a main part showing a connected state of solar cell modules.
FIG. 4 is a perspective view of a main part showing the wiring structure of the solar cell module.
FIG. 5 is a cross-sectional view of the main part showing the wiring structure of the solar cell module.
6A and 6B are explanatory perspective views showing a power cable device provided with a temporary fixing means. FIG.
FIG. 7 is an explanatory perspective view showing a modified example of the power cable device.
FIG. 8 is an explanatory perspective view showing a second embodiment of the present invention.
FIG. 9 is an explanatory perspective view showing the power cable device.
FIG. 10 is an explanatory perspective view showing a power cable device according to a third embodiment of the present invention.
FIG. 11 is an explanatory perspective view showing a power cable device according to a fourth embodiment of the present invention.
FIG. 12 is an explanatory perspective view showing a state where a power cable device according to a fifth embodiment of the present invention is temporarily fixed to a base sheet.
FIG. 13 is an explanatory perspective view showing a power cable device according to a sixth embodiment of the present invention.
FIG. 14 is an explanatory perspective view showing a state where a power cable device according to a seventh embodiment of the present invention is temporarily fixed with a nail.
FIG. 15 is an explanatory perspective view showing a state in which a power cable device according to an eighth embodiment of the present invention is temporarily fixed to another adjacent parallel power cable.
FIG. 16 is an explanatory perspective view showing temporary fixing means in a ninth embodiment of the present invention.
FIG. 17 is an explanatory perspective view showing temporary fixing means in a tenth embodiment of the present invention.
[Explanation of symbols]
1 Roof with power generation function
2, 2A, 2B, 2C Solar cell module
3 Power cable
4 Temporary fixing means
5 Output section
6 Temporary fixing materials
7 holding part
7A 1st holding part
7B 2nd holding part
8 Fixed part
9 Connecting members
10 Roof body
11 Field board
12 Ground sheet
13 side edges
14 Building top
20 Solar cell
21 Support stand
22 Gasket
23 Insertion groove
24 Metal plate
24a bending part
25 Mounting groove
26 Inward flange
27 outward flange
28 Backing material
29 mounting screws
30 Power cable device
31 Power cable body
32 connection terminals
33, 33A Thin-walled protrusion
34 Notch
35 Cut line
36 Thin-walled ridges
37 Waterproof connector
40 nails
41 Adhesive
50 terminal box
51, 51a, 51b, 51c, 51d, 51e, 51f Output cable
52 Connection terminal
53 Waterproof connector
70 holding wall
71 Loop fastening band
72 Band
73 Lock part
80 plate
81 Through hole
82 Adhesive layer
83 clips
90 chains
L distance

Claims (4)

  A roof body formed by laying a base sheet on a base plate, a plurality of solar cell modules arranged along the base sheet outer surface of the roof body, and an output unit provided on the back side of each solar cell module, A plurality of power cables interposed between the modules and the roof body along the arrangement of the solar cell modules and connected to a predetermined output unit, and temporary fixing means for temporarily fixing the power cables to the roof body Provided with a single or a plurality of thin-walled projecting pieces on the outer surface of the power cable along the longitudinal direction of the power cable, and the thin-walled projecting pieces are electrically powered by a predetermined tensile force at a base end portion of the thin-walled projecting piece. While providing a crack guide part to be separated from the cable body, the temporary fixing means includes the projecting piece and a nail, a screw or a stapler for fixing the protruding piece to the roof body, or a combination thereof. Collecting function with a roof. Wherein the thin projected piece, with the power generation function roof according to claim 1, wherein provided from the connection terminal tips of at least the power cable to 50~300mm spaced locations.   A power cable device interposed between a roof body and a solar cell module installed on the roof body and connected to a predetermined output unit provided on the back side of the solar cell module, the power cable body, A connection terminal provided at the tip of the power cable body and connected to a predetermined output unit, and provided on the outer jacket surface along the longitudinal direction of the power cable body and by a nail, a screw or a stapler, or a combination thereof A crack guide part that consists of one or a plurality of thin-walled projecting pieces fixed to the roof body, and that separates the thin-walled projecting piece from the power cable body by the action of a predetermined tensile force at the base end portion of the thin-walled projecting piece. Power cable device provided. The power cable device according to claim 3 , wherein the thin-walled projecting piece is provided at a position spaced at least 50 to 300 mm from the tip of the connection terminal.

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