CN110677114A - Retractable tree-shaped photovoltaic module and use method thereof - Google Patents
Retractable tree-shaped photovoltaic module and use method thereof Download PDFInfo
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- CN110677114A CN110677114A CN201911072012.4A CN201911072012A CN110677114A CN 110677114 A CN110677114 A CN 110677114A CN 201911072012 A CN201911072012 A CN 201911072012A CN 110677114 A CN110677114 A CN 110677114A
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- photovoltaic
- supporting rod
- hinge seat
- light receiving
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/20—Collapsible or foldable PV modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a retractable tree-shaped photovoltaic module which comprises a supporting rod, wherein photovoltaic panel units are arranged on two sides of the supporting rod, each photovoltaic panel unit comprises a photovoltaic panel and a support, the photovoltaic panels and the supports are fixedly connected, and the supports are rotatably connected with the supporting rod; a locking piece is arranged between the support and the support rod and used for locking the light receiving state and the folding state of the photovoltaic panel; the folded photovoltaic panel is arranged along the vertical direction and is positioned on the light receiving side of the supporting rod, and the light receiving surfaces of the photovoltaic panels on the two sides of the supporting rod are adjacent or attached to each other. The photovoltaic panel in the unfolded state in the retractable tree-shaped photovoltaic module receives sufficient light, and the two photovoltaic panels in the folded state are arranged along the vertical direction, so that the collision probability of hailstones and the photovoltaic panels is reduced compared with that in the unfolded state; the retractable tree-shaped photovoltaic module is used in a wind and sand environment, the illuminated surfaces are adjacent or attached to each other, the illuminated surfaces of the photovoltaic panels are almost free of sand and soil adhesion, and the equipment maintenance workload is small. The invention also discloses a use method of the retractable tree-shaped photovoltaic module.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a retractable tree-shaped photovoltaic module and a using method thereof.
Background
The general mounting means of photovoltaic module all is the tiled formula, and the tiling is in places such as ground, roof, but this prerequisite has the type of opening wide well, and the area is big, and is higher to the geographical environment requirement. The front protective glass of the photovoltaic module is usually low-iron ultra-white toughened glass which has certain anti-hitting capability and can bear common hail hitting.
The requirement of the national photovoltaic module product specification GB/T9535 and the international specification IEC61215 on the hail resistance of the photovoltaic module is that the hail with the diameter of 25mm can be resisted at the speed of 23 m/s. However, hail at a faster rate or larger diameter can result in severe consequences such as glass crazing, glass breakage, and complete battery scrap. In addition, in areas with severe wind and sand, the photovoltaic panel needs to be cleaned after the sand and dust weather so as to ensure the light receiving amount of the photovoltaic panel, and the equipment maintenance difficulty is high.
Disclosure of Invention
One of the objectives of the present invention is to overcome the defects in the prior art, and provide a retractable tree-shaped photovoltaic module, which reduces the probability of collision between the photovoltaic panel and hailstones and reduces the maintenance cost of the photovoltaic module by folding the photovoltaic panel.
In order to achieve the technical effects, the technical scheme of the invention is as follows: a retractable tree-shaped photovoltaic module is characterized by comprising a supporting rod, wherein photovoltaic panel units are arranged on two sides of the supporting rod and comprise photovoltaic panels and supports which are fixedly connected, and the supports are rotatably connected with the supporting rod;
a locking piece is arranged between the support and the support rod and used for locking the light receiving state and the folding state of the photovoltaic panel;
the folded photovoltaic panel is arranged along the vertical direction and is positioned on the light receiving side of the supporting rod, and the light receiving surfaces of the photovoltaic panels on the two sides of the supporting rod are adjacent or attached to each other.
The preferable technical scheme is that a cantilever is arranged on the supporting rod, a rotating shaft and a shaft sleeve which are matched with each other are arranged at the free end of the cantilever and the bracket, and the axial direction of the rotating shaft is consistent with the axial direction of the supporting rod; the locking piece is arranged between the rotating shaft and the shaft sleeve.
The preferred technical scheme does, the pivot periphery is provided with first ring flange, the axle sleeve periphery is provided with the second ring flange, be provided with a plurality of pinhole or screw on first ring flange and the second ring flange, the locking piece is for wearing to locate the pin or the bolt of first ring flange and second ring flange in proper order.
The preferred technical scheme does, the surperficial circumference interval of pivot is provided with two first stoppers, the periphery of axle sleeve is provided with the second stopper, the second stopper is located two between the first stopper.
The preferable technical proposal is that the device also comprises a main rod and an inclined strut; the surface of the main rod is sequentially provided with a first hinge seat and a second hinge seat along the axial direction, and the first hinge seat is positioned above the second hinge seat;
the first hinge seat is in pin joint with one end of the support rod; one end of the inclined strut is in pin joint with the second hinge base, and the other end of the inclined strut is in pin joint with the axial middle part or the other end of the strut;
the pin holes of the first hinge seat, the second hinge seat, the support rod and the inclined support rod are axially perpendicular to the axial direction of the main rod.
The preferred technical scheme does, the mobile jib surface still is provided with the third articulated seat, the articulated seat of second is located between first articulated seat and the third articulated seat, the articulated seat of third articulated seat and second all is used for the one end pin joint with the diagonal brace.
According to the preferable technical scheme, purlins are arranged on the back of the photovoltaic panel and fixedly connected with the support.
The second purpose of the invention is to provide a using method of the retractable tree-shaped photovoltaic module, which is characterized in that the retractable tree-shaped photovoltaic module is based on the retractable tree-shaped photovoltaic module; the method comprises the following switching steps of switching the light receiving state of the photovoltaic panel to the folding state:
and adjusting or removing the locking piece, folding the photovoltaic panel units on two sides of the supporting rod towards the light receiving side of the supporting rod, and arranging the two photovoltaic panels along the vertical direction until the light receiving surfaces of the photovoltaic panels are adjacent or attached to each other.
The invention also aims to provide a use method of the retractable tree-shaped photovoltaic module, which is characterized in that the retractable tree-shaped photovoltaic module is based on the retractable tree-shaped photovoltaic module; the method comprises the following switching steps of switching the light receiving state of the photovoltaic panel to the folding state: adjusting or removing the locking piece, folding the photovoltaic panel units on two sides of the supporting rod towards the light receiving side of the supporting rod until the two photovoltaic panels are arranged along the vertical direction and the light receiving surfaces of the photovoltaic panels are adjacent or attached to each other, and adjusting or installing the locking piece;
the method also comprises the following step of adjusting the inclination angle of the photovoltaic panel: and releasing the pin joint structure of the support rod and the second hinge seat or the third hinge seat, switching the support rod between the second hinge seat and the third hinge seat, and installing the switched pin joint structure.
The invention has the advantages and beneficial effects that:
the retractable tree-shaped photovoltaic assembly takes a support rod as a supporting piece, the photovoltaic units are rotatably arranged on two sides of the support rod, and the light receiving unfolding state and the folding state of the photovoltaic panel are fixed through a locking piece between the support frame and the support rod;
the photovoltaic panel in the unfolded state is sufficiently received, and the two photovoltaic panels in the folded state are arranged along the vertical direction, so that the collision probability of hailstones and the photovoltaic panels is reduced compared with that in the unfolded state;
the retractable tree-shaped photovoltaic module is used in a wind and sand environment, the illuminated surfaces of two photovoltaic panels connected with one supporting rod are adjacent or attached to each other, the surface of the vertical illuminated surface is smooth, and large-particle sandy soil falls down due to gravity after entering between the two photovoltaic panels, so that the illuminated surfaces of the photovoltaic panels are almost free of sandy soil adhesion, and the equipment maintenance workload is small;
furthermore, with branch and photovoltaic unit and mobile jib and diagonal brace assembly, when using under the bad weather such as hail sand blown by the wind, be connected branch and third hinge joint seat, make the photovoltaic unit be umbelliform receipts and close the structure. Compared with the structure that the photovoltaic panel is folded and the supporting rod and the second hinge seat are arranged, the horizontal projection area of the photovoltaic panel is further reduced, and the collision probability of hailstones and the photovoltaic panel is further reduced; the wind area of the folded photovoltaic panel is further reduced.
Drawings
FIG. 1 is a front view of a retractable tree-shaped photovoltaic module in a light receiving state in embodiment 1;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic perspective view of the structure of example 1;
FIG. 4 is a partial enlarged view of B in FIG. 3;
FIG. 5 is a schematic view showing the structure of the arm, the holder and the locking member in embodiment 1;
FIG. 6 is a front view of the foldable and retractable tree-shaped photovoltaic module of example 1 in a folded state;
FIG. 7 is a schematic perspective view of a retractable tree-shaped photovoltaic module of embodiment 2 in a light receiving state;
FIG. 8 is a front view of the foldable and retractable tree-shaped photovoltaic module in accordance with example 2;
in the figure: 1. a strut; 2. a photovoltaic panel unit; 21. a photovoltaic panel; 22. a support; 23. a shaft sleeve; 24. a purlin; 3. a cantilever; 4. a first flange plate; 5. a second flange plate; 6. a pin hole; 7. a limit convex ring; 8. a second limiting block; 9. a main rod; 91. a first hinge mount; 92. a second hinge mount; 93. a third hinge mount; 10. a diagonal brace; 11. and (4) bolts.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Supporting rod
The branch is as the base of photovoltaic unit, but direct fixed connection is on fixed support, perhaps further, and branch and mobile jib and diagonal brace are connected, and branch, mobile jib and diagonal brace make up into triangular connecting rod structure, are provided with a plurality of branches around the mobile jib, form the structure that opens and shuts of similar umbelliform.
The branch quantity of mobile jib periphery is according to the size of photovoltaic plate and the angle of opening and shutting of branch and synthesize and confirm. The adjacent light receiving surfaces or the fitting of the photovoltaic panels depend on the thickness of the photovoltaic panels and the size of the brackets and the supporting rods.
Photovoltaic panel unit
The photovoltaic panels in the photovoltaic panel units on both sides of the strut can be shaped like photovoltaic panels of different shapes. Based on the photovoltaic panels of the same shape, the number of photovoltaic panels located on both sides of the strut may vary. Preferably, the photovoltaic panels on both sides of the strut are symmetrically arranged. The outer edges of the two symmetrical photovoltaic panels are flush in the folded state, the frame interval of the photovoltaic assembly is small, and the amount of wind sand entering between the two folded photovoltaic panels in the wind sand environment is small.
Photic state and folding state of photovoltaic panel
The light receiving state of the photovoltaic panel refers to a state in which the photovoltaic panel faces the light source, i.e., the panel in the photovoltaic panel faces upward. Under the light receiving state, the included angle of the light receiving sides of the two photovoltaic panels connected with the same supporting rod is equal to, larger than or smaller than 180 degrees, and preferably equal to or larger than 180 degrees. The folding state needs to satisfy the following three conditions simultaneously: the photovoltaic panel is arranged along the vertical direction, the photovoltaic panel is positioned at the light receiving side of the supporting rod, and the light receiving surfaces of the photovoltaic panels at the two sides of the supporting rod are adjacent or attached to each other. The smaller the distance between the light receiving surfaces of the two photovoltaic panels connected with the same supporting rod is, the better the protection effect on the photovoltaic panels is.
Rotary connection and locking piece of bracket and support rod
The rotational connection of the bracket to the strut includes known rotational connections and is not limited to a shaft and a bushing. The locking member functions to fix the relative positions of the bracket and the strut. Specifically, a gear or a worm wheel is arranged on a rotating shaft of the rotating structure, and the locking piece comprises a gear clutch and a worm which correspond to each other, so that the aim of locking the bracket and the support rod can be achieved.
Rotating shaft and shaft sleeve
The positions of the rotating shaft and the shaft sleeve can be interchanged, namely, the rotating shaft is arranged on the cantilever, the shaft sleeve is arranged on the bracket, or the shaft sleeve is arranged on the cantilever, and the rotating shaft is arranged on the bracket. The axial of pivot is unanimous with the axial of branch to and the photovoltaic unit symmetry setting of branch both sides all helps guaranteeing that branch and photovoltaic unit's assembly body center is located directly over the branch. Compared with the center of the photovoltaic panel in a folded state deviating from the support rod, the connection structure of the photovoltaic module is more stable and reliable, and the service life of the photovoltaic module is prolonged.
First stopper and second stopper
The two first limiting blocks limit the stroke of the second limiting block, and specifically, the central angle of the stroke of the second limiting block is 80-100 degrees.
First articulated seat, second articulated seat and third articulated seat
The first hinge seats are connected with the end parts of the supporting rods, the inclined supporting rods, the supporting rods and the main rod form a triangular connecting rod structure, and the end parts of the inclined supporting rods are switched between the two hinge seats to realize the unfolding and folding of the supporting rods. Equivalent alternative structures include, but are not limited to, known umbrella frame structures: the lantern ring is arranged outside the main rod and is in pin joint with the diagonal brace, and the lantern ring moves along the main rod to drive the branch rods to be unfolded and folded.
Furthermore, in order to optimize the hail impact protection effect, the frame of the photovoltaic panel can be locally enhanced, or a buffer layer can be arranged in and/or outside the top frame of the photovoltaic panel.
Example 1
As shown in fig. 1-6, the retractable tree-shaped photovoltaic module in embodiment 1 includes a supporting rod 1, photovoltaic panel units 2 with the same shape are disposed on two sides of the supporting rod 1, each photovoltaic panel unit 2 includes a photovoltaic panel 21 and a support 22, which are fixedly connected, and the support 22 is rotatably connected with the supporting rod 1;
an L-shaped cantilever 3 is arranged on the supporting rod 1, the free end of the cantilever 3 is a rotating shaft, the free end surface of the rotating shaft is connected with a first flange plate 4 through a bolt 11, a shaft sleeve 23 is arranged on the support 22, the rotating shaft is in rotating fit with the shaft sleeve 23, and the axial direction of the rotating shaft is consistent with the axial direction of the supporting rod 1; the periphery of the shaft sleeve 23 is provided with a second flange plate 5, a plurality of pin holes 6 are arranged on the first flange plate 4 and the second flange plate 5 at equal intervals, the locking piece is a bolt 11 nut, and the bolt 11 sequentially penetrates through the pin holes of the first flange plate 4 and the second flange plate 5.
The surperficial circumference of pivot is provided with spacing bulge loop 7 that central angle is 180, and this spacing bulge loop 7 is equal to two first stoppers of a body coupling, and the periphery of axle sleeve 23 is provided with second stopper 8, and convex second stopper 8 and second ring flange 5 fixed connection, the central angle that second stopper 8 corresponds is 90, and second stopper 8 is located the breach of spacing bulge loop 7, and the turned angle of restriction axle sleeve 23 is 90.
The embodiment 1 also comprises a main rod 9 and an inclined strut 10; the surface of the main rod 9 is sequentially provided with a first hinged seat 91 and a second hinged seat 92 along the axial direction, the main rod 9 is arranged in the vertical direction, four first hinged seats 91 are arranged at the same height, four second hinged seats 92 are arranged at the same height, and the first hinged seats 91 are arranged right above the second hinged seats 92 in a one-to-one correspondence manner.
The first hinge seat 91 is connected with one end of the support rod 1 by a pin; one end of the diagonal brace 10 is in pin joint with the second hinge seat 92, and the other end of the diagonal brace is in pin joint with the axial middle part of the strut 1; the pin holes of the first hinge seat 91, the second hinge seat 92, the strut 1 and the diagonal brace 10 are all axially perpendicular to the axial direction of the main rod 9.
The surface of the main rod 9 is further provided with a third hinge seat 93, the second hinge seat 92 is located between the first hinge seat 91 and the third hinge seat 93, and the third hinge seat 93 and the second hinge seat 92 are both used for being in pin joint with one end of the diagonal brace 10.
The back of the photovoltaic panel 21 is provided with a purlin 24, and the purlin 24 is fixedly connected with the bracket 22.
Example 2
As shown in fig. 7-8, embodiment 2 is based on embodiment 1, and is different in that the number of the first hinge seats 91, the second hinge seats 92 and the third hinge seats 93 on the main rod 9 is five, the photovoltaic units 2 on two sides of one of the support rods 1 are symmetrically arranged, one side of the other four support rods 1 is provided with one photovoltaic panel 21, and the other side is provided with two photovoltaic panels 21.
Under the normal state of expanding of embodiment 1 and embodiment 2, branch 1 and the articulated seat 92 pin joint of second of mobile jib 9, the one end cross section of second stopper 8 and spacing bulge loop 7 pushes up mutually, and bolt 11 is worn to locate in the corresponding through-hole of first ring flange 4 and second ring flange 5 and is connected with the nut, locks photovoltaic unit and branch.
Before hailstones or sand blown by the wind, the bolts 11 and the nuts are removed, the photovoltaic panel units 2 on two sides of the supporting rod 1 are folded towards the light receiving side of the supporting rod 1 until the second limiting block 8 is propped against the cross section of the other end of the limiting convex ring 7, the planes of the two photovoltaic panels 21 are in the vertical direction, and the light receiving surfaces of the photovoltaic panels 21 are attached to each other.
Embodiments 1 and 2 further include the following steps of folding the strut: the pin joint structure between the strut 1 and the second hinge seat 92 is released, the strut 1 is pin-jointed to the third hinge seat 93, and the strut is folded.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A retractable tree-shaped photovoltaic module is characterized by comprising a supporting rod, wherein photovoltaic panel units are arranged on two sides of the supporting rod and comprise photovoltaic panels and supports which are fixedly connected, and the supports are rotatably connected with the supporting rod;
a locking piece is arranged between the support and the support rod and used for locking the light receiving state and the folding state of the photovoltaic panel;
the folded photovoltaic panel is arranged along the vertical direction and is positioned on the light receiving side of the supporting rod, and the light receiving surfaces of the photovoltaic panels on the two sides of the supporting rod are adjacent or attached to each other.
2. The retractable tree-shaped photovoltaic module as claimed in claim 1, wherein a cantilever is arranged on the supporting rod, a free end of the cantilever and the bracket are provided with a rotating shaft and a shaft sleeve which are matched with each other, and the axial direction of the rotating shaft is consistent with the axial direction of the supporting rod; the locking piece is arranged between the rotating shaft and the shaft sleeve.
3. The retractable tree-shaped photovoltaic module as claimed in claim 2, wherein a first flange is disposed on the periphery of the rotating shaft, a second flange is disposed on the periphery of the shaft sleeve, a plurality of pin holes or screw holes are disposed on the first flange and the second flange, and the locking member is a pin or a bolt 11 sequentially penetrating through the first flange and the second flange.
4. A retractable tree-shaped photovoltaic module as claimed in claim 2 or 3, wherein two first limiting blocks are circumferentially arranged on the surface of the rotating shaft at intervals, a second limiting block is arranged on the periphery of the shaft sleeve, and the second limiting block is located between the two first limiting blocks.
5. The retractable tree photovoltaic module of claim 1, further comprising a main bar and diagonal struts; the surface of the main rod is sequentially provided with a first hinge seat and a second hinge seat along the axial direction;
the first hinge seat is in pin joint with one end of the support rod; one end of the inclined strut is in pin joint with the second hinge base, and the other end of the inclined strut is in pin joint with the axial middle part or the other end of the strut;
the pin holes of the first hinge seat, the second hinge seat, the support rod and the inclined support rod are axially perpendicular to the axial direction of the main rod.
6. The retractable tree-shaped photovoltaic assembly as claimed in claim 5, wherein the main rod is further provided with a third hinge seat on the surface thereof, the second hinge seat is located between the first hinge seat and the third hinge seat, and the third hinge seat and the second hinge seat are both used for being pinned with one end of the diagonal brace.
7. The retractable tree-shaped photovoltaic module as claimed in claim 1, wherein purlins are arranged on the back of the photovoltaic panel and fixedly connected with the support.
8. A method for using a retractable tree-shaped photovoltaic module, which is characterized in that the retractable tree-shaped photovoltaic module is based on any one of claims 1 to 7; the method comprises the following switching steps of switching the light receiving state of the photovoltaic panel to the folding state:
and adjusting or removing the locking piece, folding the photovoltaic panel units on two sides of the supporting rod towards the light receiving side of the supporting rod, and arranging the two photovoltaic panels along the vertical direction until the light receiving surfaces of the photovoltaic panels are adjacent or attached to each other.
9. A use method of a retractable tree-shaped photovoltaic module is characterized in that the retractable tree-shaped photovoltaic module is based on the retractable tree-shaped photovoltaic module of claim 6; the method comprises the following switching steps of switching the light receiving state of the photovoltaic panel to the folding state: adjusting or removing the locking piece, folding the photovoltaic panel units on two sides of the supporting rod towards the light receiving side of the supporting rod until the two photovoltaic panels are arranged along the vertical direction and the light receiving surfaces of the photovoltaic panels are adjacent or attached to each other, and adjusting or installing the locking piece;
the method also comprises the following step of adjusting the inclination angle of the photovoltaic panel: and releasing the pin joint structure of the support rod and the second hinge seat or the third hinge seat, switching the support rod between the second hinge seat and the third hinge seat, and installing the switched pin joint structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911072012.4A CN110677114A (en) | 2019-11-05 | 2019-11-05 | Retractable tree-shaped photovoltaic module and use method thereof |
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| CN201911072012.4A CN110677114A (en) | 2019-11-05 | 2019-11-05 | Retractable tree-shaped photovoltaic module and use method thereof |
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| JP2019094613A (en) * | 2017-11-17 | 2019-06-20 | Ｗｗｂ株式会社 | Frame for photovoltaic power generation panel, photovoltaic power generation device and method for installing photovoltaic power generation device |
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