JP2006278537A - Solar battery array - Google Patents

Solar battery array Download PDF

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Publication number
JP2006278537A
JP2006278537A JP2005092809A JP2005092809A JP2006278537A JP 2006278537 A JP2006278537 A JP 2006278537A JP 2005092809 A JP2005092809 A JP 2005092809A JP 2005092809 A JP2005092809 A JP 2005092809A JP 2006278537 A JP2006278537 A JP 2006278537A
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JP
Japan
Prior art keywords
frame
solar cell
power generation
region
cell module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005092809A
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Japanese (ja)
Inventor
Teruyuki Takahashi
輝之 高橋
Original Assignee
Kyocera Corp
京セラ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp, 京セラ株式会社 filed Critical Kyocera Corp
Priority to JP2005092809A priority Critical patent/JP2006278537A/en
Publication of JP2006278537A publication Critical patent/JP2006278537A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/20Peripheral frames for modules
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/10Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
    • F24S25/13Profile arrangements, e.g. trusses
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/47Mountings or tracking

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module having rigidity against an external force by providing a frame of a structure having strength conforming to the state of a load to be applied to a solar battery array. <P>SOLUTION: The solar battery array is provided with a plurality of elongated mounts arranged in a predetermined direction with intervals; and a plurality of solar battery modules each having a power generation part and a frame body attached on the external periphery of the power generation part, and also having a supporting region supported by the mounts from the lower part. In this array, the cross sectional area of the frame is larger in the center region of the arrangement direction of the mounts than in the supporting region. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure when a solar cell array is formed by using a plurality of solar cell modules that generate power using solar energy.
  In recent years, with the growing interest in global environmental problems, technological development of new energy systems using natural energy is progressing. Among them, solar-powered devices that use sunlight are the most interested and are now rapidly spreading in the world.
  As an example of a solar-powered device, there is a solar cell module in which a plurality of solar cell elements that convert sunlight into electric energy are connected, and a solar power generation device that has a plurality of the solar cell modules installed to form a solar cell array It is installed on the roof of a house.
  Also, there are various methods for attaching to the roof, such as a roof-integrated solar cell module manufactured integrally with a roof member, a steel material on a horizontal installation surface such as the ground or the roof of a building as shown in FIG. A land roof type installation method for fixing a solar cell module through a pedestal called a pedestal made of aluminum material or the like, and further, using a vertical beam or a horizontal beam on the roof tile as shown in FIG. There is an installation method called a so-called roof-standing type in which a stand is assembled and a solar cell module is installed there. Specifically, in the land roof type installation method of FIG. 19, a foundation 9 such as concrete is provided on the roof, and a rack having an inclination is formed thereon using racks 7 (7a to 7c). The battery module 2 is arranged. 18 has a vertical beam 12 on the roof, and a horizontal beam 10 is arranged on the vertical beam so as to be orthogonal to the direction of the vertical beam. The battery module 2 is arranged, and it is easier to obtain a sense of unity with the roof than the flat roof type.
  As shown in FIG. 7, the solar cell module 2 used in the photovoltaic power generation apparatus is configured so that electric power can be obtained using the photoelectric conversion effect of the solar cell element 18 made of silicon or the like. A plurality of such solar cell elements 18 are electrically connected in series and in parallel and covered with a weather-resistant material so as to obtain a required output voltage and output current. This solar cell element is constituted by a crystalline solar cell such as single crystal or polycrystalline silicon, or a thin film solar cell.
  In such a solar cell module 2, a light transmitting plate 13 such as a glass plate or a synthetic resin plate is disposed on the light receiving surface of the solar cell element 18, and a Teflon (registered trademark) film or PVF is disposed on the non-light receiving surface as the back surface. (Polyvinyl fluoride), PET (Polyethylene terephthalate) or other weather resistant film 14 is attached, and between the light transmission plate 13 and the weather resistant film 14, for example, EVA (ethylene-vinyl acetate copolymer resin) A transparent synthetic resin made of the material is used as a filler 15, and the power generated by the solar cell module can be taken out via a junction box 17 provided on the surface of the weather resistant film. Part 20 is used.
And it attaches so that the frame 16 which consists of aluminum metal, SUS, etc. may be inserted into the rectangular main body which is the power generation part 20, and this raises the intensity of the whole solar cell part, A mounting hole is formed in the frame 16 so that the frame 16 can be fixed to the support fitting with bolts or screws. The fixing method of attaching the solar cell module 2 to the above-described flat roof type or roof-standing type frame via the frame body 16 can have relatively high rigidity, and has a resistance against a large external force such as a storm or snow, It is suitable for constructing medium-scale solar power generation devices such as on residential roofs.
  By the way, in such a solar power generation device, when installing a solar cell module fixed to a vertical or horizontal beam built on the roof in order to increase the load resistance, almost all external forces such as storms and snowfall are almost vertical. Since the structure will be able to withstand with a horizontal beam, it is necessary to make the beam and foundation sufficiently strong. To make the material stronger and increase the thickness of the beam, The total weight of the power generation system tends to become very large.
Therefore, the frame body of the solar cell module is bent to increase the strength by providing ribs that reinforce the strength, so that the solar cell module frame body can be used as a part of the crosspiece to reduce the number of members and reduce the system weight A solar power generation system that can achieve the above has been devised.
Alternatively, a structure in which an elastic support member having elasticity in the vertical direction with respect to the main surface of the solar cell module is provided between two opposing frame bodies serving as support substrates for the purpose of suppressing the amount of deflection of the solar cell module. (For example, refer to Patent Document 1).
JP 2004-146765 A
  However, in order to increase the load resistance, the method of replacing the solar cell module frame as a part of the crosspiece by increasing the strength by bending the frame of the solar cell module and providing a rib to reinforce the strength is the first method. As stated, the increase in the weight of the frame makes the entire system heavier and places a burden on the roof of the house where the solar power generation system is installed.
  In addition, the above-described structure that suppresses the amount of deflection of the solar cell module by providing an elastic support member having elasticity in the vertical direction with respect to the main surface of the solar cell module between the frames of the two opposing sides that are the support base is a solar cell. The elastic support member is used to reduce the amount of vertical deflection with respect to the module main surface, but the overall strength including the frame of the solar cell module is not increased by the elastic support member. In addition, when the amount of deflection of the module is suppressed by the elastic support member, the effect is small unless a material having higher rigidity than the glass material of the solar cell module is used, and the amount of the elastic material used to effectively reduce the amount of deflection. However, it is difficult to reduce the weight of the entire solar cell module. Moreover, since the intensity | strength of the whole solar cell module is based only on a frame, it does not improve an intensity | strength.
  In order to solve the above problem, the solar cell array of the present invention is attached to a plurality of elongated bases arranged in a predetermined direction at intervals, a power generation unit, and an outer periphery of the power generation unit. A plurality of solar cell modules having a support region supported from below by the gantry, and the cross-sectional area of the frame body is more central in the arrangement direction of the gantry than the support region It is large.
  Further, the solar cell array of the present invention has a plurality of elongated bases arranged in a predetermined direction at intervals, a power generation unit and a frame attached to the outer periphery of the power generation unit, A plurality of solar cell modules having a support region supported from below by a gantry, wherein the cross-sectional area of the frame body is more than the region between the support region and a central region in the arrangement direction of the gantry The region and the central portion are large.
  According to the solar cell array of the present invention, it has a plurality of elongated bases arranged in a predetermined direction at intervals, a power generation unit and a frame attached to the outer periphery of the power generation unit, A plurality of solar cell modules having a support region supported from below by the gantry, and a bending moment because the cross-sectional area of the frame is larger in the central region in the arrangement direction of the gantry than the support region Can increase the strength of the central region of the frame body, optimize the stress distribution applied to the frame body, improve the resistance to disturbance due to snow and storms, and The amount of vertical deflection can be kept small.
  Further, according to the present invention, since the cross-sectional area of the frame body located in the support region and the central region is increased, the strength of the frame body can be increased even in the support region where a large static load is easily applied. This also makes it possible to improve the resistance to disturbance caused by snow and storms.
  Hereinafter, an embodiment of a solar power generation device of the present invention will be described in detail based on the drawings schematically shown.
  As shown in FIG. 1, the solar cell module 2 used in the solar cell array according to the present invention has a laminated structure of solar cell elements as shown in FIG. 7, and has four sides on the outer periphery of the rectangular power generation unit 20. Is surrounded by a frame 1 (1a, 1b) which is a frame. The frame 1 (1a, 1b) is a rail-like structure produced by extrusion molding such as aluminum alloy or stainless steel, and the cross-sectional shape thereof is, for example, the cross-sectional area or cross-section of both ends as in the frame 1b in the figure. The depth is small, and the depth is larger toward the center. In this way, for example, when considering a case where solar cell modules are fixed one by one without connecting adjacent solar cell modules on the roof surface, both ends can be handled as beam elements that are simply supported. it can. Further, the above-described shape of the frame body 1b is also adopted in the frame body 1a, and the same structure can be obtained for a frame structure in which all four sides have a large depth at the center as shown in FIG. When a plurality of solar cell modules 2 are connected to form a solar cell array, when an evenly distributed load such as wind is applied, a bending moment diagram as shown in the BMD diagram of FIG. 9 is obtained and supported by the fixed base 5. The bending moment of the solar cell module 2 is zero at both ends of the frame body 1c, and is maximum at the center of the frame body 1c. Therefore, if the cross-sectional area or the cross-sectional depth of the frame 1c is continuously increased from both ends toward the central portion, the stress state applied to the frame 1c is less likely to be uneven, and the bending stress value in the longitudinal direction of the frame 1c. Therefore, the frame body 1c can be manufactured with a minimum material. In addition, although this example demonstrated based on the frame 1c, it is the same also in the frame 1b which has the same frame structure.
  As shown in FIG. 10, when a plurality of the solar cell modules 2 described above are connected, the same effect can be obtained when the solar cell modules are not physically connected to each other and supported by the fixed base 5. It is done.
  On the other hand, as shown in FIG. 3, the cross-sectional area or cross-sectional depth of the frame 1e is reduced from the end toward the center, and the ends of the plurality of solar cell modules 2 are rigidly connected as shown in FIG. In the case of a solar cell array in which both ends are rigidly fixed to a roof or the like and a plurality of solar cell modules 2 are arranged between the fixed bases 5, an equally distributed load is applied to each solar cell module. In the bending moment diagram, as shown in the BMD diagram of FIG. 8, the sectional area or the sectional depth is synchronized with the change of the bending moment value. Thereby, the stress state applied to the frame body is optimized, and the above-described effects can be obtained in the same manner. Also, as shown in FIG. 4, the frame 1 f also has the same frame structure as the frame 1 e, so that the same effect can be obtained not only in the horizontal connection direction of the solar cell array but also in the vertical connection direction.
  Moreover, you may implement the method mentioned above only with the frame of a solar cell module. In this case, as shown in FIGS. 5 and 6, the frame 1h has a structure in which the cross-sectional area or the cross-sectional depth is increased at both ends and the center. By doing so, for example, when a load is applied to a solar cell array in which a plurality of adjacent solar cell modules are fixed like the solar power generation device of FIG. 19 introduced earlier, bending as shown in the BMD diagram of FIG. It becomes a moment diagram, and the moment is zero at the center of the frame 1d of each solar cell module 2 connected by the connecting member 6, half at the center at both ends, and zero between the ends. It becomes possible to take an optimal stress state, and it is possible to minimize the amount of material used while reducing the amount of deflection of the solar cell module and the solar cell array as described above.
  Next, a configuration method of the shape of the frame of the solar cell module used in the solar cell array according to the present invention will be described. Although not particularly illustrated, the cross-sectional shape of the frame of the present invention is small and large in cross-section depth at both ends, in the center, or at a plurality of locations, as shown in the side view of the solar cell module 2 shown in FIG. The part is arranged. In the drawing, the cross-sectional depth of the end portion is large, the cross-sectional shape at point G of the frame 1h is as shown in FIG. 14, and the frame has a wide cross-sectional area, and at point H where the cross-sectional depth is small, as shown in FIG. In addition, the cross-sectional area of the frame is reduced.
  The frame 1 (1h, 1g in the figure) is preferably formed by extrusion molding of iron, stainless steel, aluminum, or the like, but the frame of the solar cell module 2 shown in FIGS. Like the body 1, a structure whose cross section changes with respect to the longitudinal direction cannot be manufactured by the extrusion molding. Therefore, when making a frame having a shape change in such a cross section, a method of connecting a portion having a large cross sectional depth by welding to form a single frame, for example, forming a frame as a casting with a mold. Or a processing method such as forming a plate material by bending.
  As another method, the cross-sectional shape of the frame body may be a closed cross-section frame body such as the frame body 4a of FIG. 14 and the frame body 4b of FIG. In addition to the bending strength and shear strength of the frame itself, it is preferable because the torsional strength is improved. However, as shown in the frame 1b of FIG. 15 and the frame 3b of FIG. Alternatively, it may be possible to produce the product by bending or the like. In such an open cross section, the torsional strength of the frame itself is inferior to that of the closed cross section described above. Therefore, the bending strength and the shear strength are increased by about 10% to obtain the same strength. A frame 1a in FIG. 12 and a frame 3a in FIG. 13 show examples of the cross-sectional shape in FIG. 11 when such a frame is used as a solar cell module.
  In addition, when maintaining strength at the vertical and horizontal crosspieces, the frame body with the changed cross-sectional shape may be only two sides without the crosspieces, and the remaining two sides are the sun as shown in FIG. 1, FIG. 3, and FIG. Of the four sides of the battery module, only two sides facing each other may be changed in cross-sectional shape, and the remaining two sides may be a frame that does not change the cross-sectional shape in the longitudinal direction as usual.
And the solar cell array which concerns on this invention is completed by combining multiple solar cell modules which have a frame as mentioned above.
It is a perspective view which shows typically the solar cell module used for the solar cell array which concerns on this invention. It is a perspective view which shows typically other 1st Embodiment of the solar cell module used for the solar cell array which concerns on this invention. It is a perspective view which shows typically other 2nd Embodiment of the solar cell module used for the solar cell array which concerns on this invention. It is a perspective view which shows typically other 3rd Embodiment of the solar cell module used for the solar cell array which concerns on this invention. It is a perspective view which shows typically other 4th Embodiment of the solar cell module used for the solar cell array which concerns on this invention. It is a perspective view which shows typically other 5th Embodiment of the solar cell module used for the solar cell array which concerns on this invention. It is sectional drawing which shows the structure of a common solar cell module typically. It is the BMD figure which showed the bending moment at the time of mounting the solar cell array which concerns on this invention on a fixed mount. It is the BMD figure which showed the arrangement | positioning drawing of the solar cell array which concerns on this invention, and the bending moment added to a flame | frame. It is the BMD figure which showed the mode that each solar cell module was individually installed on the fixed mount in the solar cell array which concerns on this invention, and the bending moment added to a flame | frame. It is the BMD figure which showed the bending moment added to the flame | frame at the time of mounting the solar cell array which concerns on this invention on a fixed mount. It is sectional drawing which shows the cross-sectional shape in G point of the frame of other 1st Embodiment of the flame | frame used for the solar cell array which concerns on this invention in FIG. It is sectional drawing which shows the cross-sectional shape in G point of the frame of other 2nd Embodiment of the solar cell array which concerns on this invention in FIG. It is sectional drawing which shows the cross-sectional shape in G point of the frame of the solar cell array which concerns on this invention in FIG. It is sectional drawing which shows the cross-sectional shape in the H point of the frame of other 2nd Embodiment of the solar cell array which concerns on this invention in FIG. It is sectional drawing which shows the cross-sectional shape in the H point of the frame of other 2nd Embodiment of the solar cell array which concerns on this invention in FIG. It is sectional drawing which shows the cross-sectional shape in the H point of the frame of the solar cell array which concerns on this invention in FIG. It is a perspective view which shows a mode that the conventional solar power generation device was installed in the flat roof. It is a perspective view which shows a mode that the conventional solar power generation device was installed in the inclined roof.
Explanation of symbols
DESCRIPTION OF SYMBOLS 1a, 1b: Frame 2: Solar cell module 3a, 3b: Frame 4a, 3b: Frame 5: Fixed mount 6: Connecting member 7, 7a-7d: Rack 9: Foundation 10: Horizontal beam 12: Vertical beam 13 : Glass plate 14: Weather resistant film 15: Filler 16: Frame body frame 17: Junction box 18: Solar cell element 20: Power generation part

Claims (2)

  1. A support region having a plurality of elongated bases arranged in a predetermined direction with a space between each other, a power generation unit and a frame attached to the outer periphery of the power generation unit, and supported from below by the base A plurality of solar cell modules having
    The cross-sectional area of the said frame is larger in the arrangement | sequence center area | region of the said mount frame than the said support area | region, The solar cell array characterized by the above-mentioned.
  2. A plurality of elongated bases arranged in a predetermined direction at intervals from each other;
    A plurality of solar cell modules having a power generation unit and a frame attached to the outer periphery of the power generation unit, and having a support region supported from below by the mount;
    The cross-sectional area of the said frame is larger in the said support area | region and the said center part than the area | region between the said support area | region and the center area | region of the arrangement direction of the said mount frame, The solar cell array characterized by the above-mentioned.
JP2005092809A 2005-03-28 2005-03-28 Solar battery array Pending JP2006278537A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009107776A1 (en) * 2008-02-28 2009-09-03 京セラ株式会社 Solar power generation system
WO2009119774A1 (en) * 2008-03-26 2009-10-01 京セラ株式会社 Solar cell module
EP2157620A1 (en) * 2007-05-14 2010-02-24 Mitsubishi Electric Corporation Solar battery module device
JP2012528969A (en) * 2009-06-05 2012-11-15 ファースト ソーラー インコーポレイテッド Photovoltaic module ground mounting equipment
WO2013108541A1 (en) * 2012-01-18 2013-07-25 シャープ株式会社 Solar cell module, structure for supporting solar cell module, method for installing solar cell module, and solar power generation system
JPWO2013061995A1 (en) * 2011-10-24 2015-04-02 京セラ株式会社 Solar cell module and solar cell array
JP2016167483A (en) * 2015-03-09 2016-09-15 トヨタ自動車株式会社 Solar battery panel
JP2017025569A (en) * 2015-07-22 2017-02-02 パナソニックIpマネジメント株式会社 Photovoltaic power generation device

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2157620A1 (en) * 2007-05-14 2010-02-24 Mitsubishi Electric Corporation Solar battery module device
EP2157620A4 (en) * 2007-05-14 2010-10-20 Mitsubishi Electric Corp Solar battery module device
US8109049B2 (en) 2007-05-14 2012-02-07 Mitsubishi Electric Corporation Solar battery module device
WO2009107776A1 (en) * 2008-02-28 2009-09-03 京セラ株式会社 Solar power generation system
US8404968B2 (en) 2008-02-28 2013-03-26 Kyocera Corporation Photovoltaic power generating system
JPWO2009107776A1 (en) * 2008-02-28 2011-07-07 京セラ株式会社 Solar power system
JP5197733B2 (en) * 2008-02-28 2013-05-15 京セラ株式会社 Solar power system
WO2009119774A1 (en) * 2008-03-26 2009-10-01 京セラ株式会社 Solar cell module
US8418416B2 (en) 2008-03-26 2013-04-16 Kyocera Corporation Solar cell module
JP2012528969A (en) * 2009-06-05 2012-11-15 ファースト ソーラー インコーポレイテッド Photovoltaic module ground mounting equipment
KR101409681B1 (en) * 2009-06-05 2014-06-19 퍼스트 솔라, 인코포레이티드 Photovoltaic module ground mount
US9349893B2 (en) 2009-06-05 2016-05-24 First Solar, Inc. Photovoltaic module ground mount
JPWO2013061995A1 (en) * 2011-10-24 2015-04-02 京セラ株式会社 Solar cell module and solar cell array
WO2013108541A1 (en) * 2012-01-18 2013-07-25 シャープ株式会社 Solar cell module, structure for supporting solar cell module, method for installing solar cell module, and solar power generation system
JP2016167483A (en) * 2015-03-09 2016-09-15 トヨタ自動車株式会社 Solar battery panel
JP2017025569A (en) * 2015-07-22 2017-02-02 パナソニックIpマネジメント株式会社 Photovoltaic power generation device

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