WO2013046744A1 - Boîte à bornes pour module de cellules solaires - Google Patents

Boîte à bornes pour module de cellules solaires Download PDF

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Publication number
WO2013046744A1
WO2013046744A1 PCT/JP2012/054143 JP2012054143W WO2013046744A1 WO 2013046744 A1 WO2013046744 A1 WO 2013046744A1 JP 2012054143 W JP2012054143 W JP 2012054143W WO 2013046744 A1 WO2013046744 A1 WO 2013046744A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
cell module
frame
terminal
side wall
Prior art date
Application number
PCT/JP2012/054143
Other languages
English (en)
Japanese (ja)
Inventor
典之 坂上
吉川　裕之
東小薗　誠
Original Assignee
住友電装株式会社
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 住友電装株式会社 filed Critical 住友電装株式会社
Publication of WO2013046744A1 publication Critical patent/WO2013046744A1/fr

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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
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H02S40/345—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box
    • 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

Definitions

  • the present invention relates to a terminal box for a solar cell module.
  • Patent Document 1 A conventional solar cell module terminal box is disclosed in Patent Document 1.
  • This device includes a plurality of terminal plates, diodes connected to the respective terminal plates, and a box body that accommodates them.
  • the box body is filled with the potting material after the terminal plates and the diodes are accommodated, and after the potting material is cured, the lid is covered.
  • the lid member has a portion extending outward from the box body.
  • the heat generated by the diode is transmitted to the lid material via the potting material, and can be diffused from the lid material to the surrounding atmosphere. Moreover, it is made possible to discharge
  • the heat dissipation efficiency is not necessarily excellent. There are circumstances that cannot be said. For this reason, the further improvement regarding heat dissipation is calculated
  • This invention was completed based on the above situations, and it aims at providing the terminal box for solar cell modules which improved heat dissipation.
  • the present invention is a solar cell module terminal box attached to a solar cell module, which is provided with a plurality of terminal plates, a box main body that accommodates the plurality of terminal plates, and disposed within the box main body, and is electrically connected to the terminal plate.
  • a feature is that it is connected to a metal frame provided along the outer periphery of the solar cell module, and has a heat dissipation surface capable of releasing heat on the frame side. Have.
  • the diode Since the diode has a heat dissipating surface arranged toward the metal frame provided along the outer periphery of the solar cell module, when the diode generates heat, the heat is efficiently dissipated from the heat dissipating surface to the frame side. Therefore, the terminal box for solar cell modules which improved heat dissipation is provided.
  • the heat dissipation member including the case where the terminal board is also used
  • the terminal box as a whole can be downsized. can do.
  • the terminal box for solar cell modules may have the following configurations.
  • the heat dissipation surface of the diode is arranged substantially parallel to the side surface of the frame. Thereby, the thermal radiation efficiency from a thermal radiation surface to a flame
  • the box body has a side wall disposed along the side surface of the frame, and the heat dissipation surface of the diode is disposed to face the side surface of the frame with the side wall and the terminal plate interposed therebetween. Thereby, a terminal box can be arrange
  • the outer surface of the side wall is in contact with the side surface of the frame.
  • the side wall is configured to surround the outer peripheral portion of the box body over the entire circumference, and the portion of the side wall that faces the side surface of the frame is thinner than the other portions. Thereby, the heat dissipation efficiency from the side wall to the frame becomes better. Further, the strength of the box body can be secured by the other part of the side wall.
  • the side wall is configured to rise from the peripheral edge of the bottom wall of the box body, and the terminal plate rises from one end of the first plate portion and the first plate portion disposed on the bottom wall along the inner surface.
  • the second plate portion is disposed along the inner surface of the diode, and the heat dissipation surface of the diode is disposed along the plate surface of the second plate portion. Thereby, the area occupied by the terminal plate and the diode occupying the wall surface of the bottom wall can be reduced, and the entire terminal box can be reduced in size.
  • the second plate portion has a larger surface area than the first plate portion. Thereby, the heat generated in the diode is widely diffused in the second plate portion, and it is avoided that the heat is locally accumulated in the terminal plate.
  • the heat dissipation surface of the diode is in contact with the second plate portion. Thereby, the heat dissipation efficiency from the diode to the second plate portion is improved.
  • the second plate portion is in contact with the inner surface of the side wall. Thereby, the thermal radiation efficiency from a 2nd board part to a side wall becomes favorable.
  • the heat radiating plate, the second plate portion, the side wall, and the frame are arranged side by side with almost no gap in the plate thickness direction. Thereby, the heat generated in the diode can be efficiently radiated by the frame, and the entire terminal box can be further downsized.
  • a terminal box for a solar cell module with improved heat dissipation is provided.
  • FIG. 3 is a sectional view taken along line XX in FIG. 2.
  • a terminal box for a solar cell module according to Embodiment 1 (hereinafter simply referred to as a terminal box 10) is attached to a solar cell module 90 (solar cell panel), and includes a box body 20, a plurality of terminal plates 50, and the like. And a plurality of diodes 60.
  • the solar cell module 90 has an outer peripheral portion 95 along its outer peripheral edge.
  • a frame 80 made of a metal material such as an aluminum material is attached to the outer peripheral portion 95.
  • the frame 80 secures the strength of the solar cell module 90 and forms a part of a fixing structure when the solar cell module 90 is attached to a roof or the like.
  • the frame 80 has a frame shape surrounding the outer peripheral portion 95 of the solar cell module 90 over the entire circumference, and protrudes upward from the edge of the solar cell module 90 as shown in FIG. It has a square cylindrical frame main body 81 extending along the edge.
  • the frame main body 81 has a side surface 82 that is substantially orthogonal to the main surface 91 (back surface) of the solar cell module 90.
  • the frame 80 has a rail-shaped holding portion 83 to which an end portion of the solar cell module 90 is fitted.
  • the holding portion 83 is coupled to one corner of the frame main body 81, and the end portion of the solar cell module 90 is held by the holding portion 83 along the lower surface of the frame main body 81.
  • the box body 20 is made of synthetic resin and has a square box shape opened upward as shown in FIG. Specifically, the box main body 20 is configured to extend long along the extending direction of the frame 80, and includes a bottom wall 21 that constitutes a bottom portion and a side wall 22 that rises from the periphery of the bottom wall 21. As shown in FIG. 2, the side wall 22 has first and second side wall portions 23 and 24 extending in the longitudinal direction while facing each other, and third and fourth side wall portions 25 and 26 extending in the short direction while facing each other. It consists of.
  • the bottom wall 21 is placed and arranged on the end portion (position near the outer peripheral portion 95) of the main surface 91 of the solar cell module 90, and the first side wall portion. 23 is disposed in contact with the side surface 82 of the frame body 81.
  • the bottom wall 21 is formed with an opening window 28 for drawing the interconnector 93 of the solar cell module 90.
  • the window portion 28 is configured to open over substantially the entire length in the longitudinal direction of the bottom wall 21 and to open over more than half of the region away from the frame 80 side in the short direction of the bottom wall 21.
  • the bottom wall 21 has an area that is reduced by the window portion 28, and has a shape that is elongated along the first side wall portion 23. As shown in FIG. 3, the first side wall portion 23 and the bottom wall 21 are thinner than the second to fourth side wall portions 24, 25, and 26.
  • a pair of cable insertion tube portions 29 are formed on the third and fourth side wall portions 25 and 26 so as to protrude outward. Cables 40 for taking out the output from the solar cell module 90 are inserted into the cable insertion tube portions 29 in pairs. The end portions of both cables 40 are inserted into the cable insertion tube portion 29, pass through the third and fourth side wall portions 25 and 26, face the box body 20, and the conductor 41 is exposed by removing the covering 42. Is arranged. The exposed conductor 41 is connected to the corresponding terminal board 50. Both cables 40 are arranged substantially parallel to the side surface 82 of the frame body 81 so as to extend in the extending direction of the frame body 81.
  • the terminal plate 50 is formed by bending a conductive metal plate or the like, and four terminal plates 50 are arranged in parallel in the extending direction of the box body 20.
  • the terminal boards 50 have the same shape and the same size, and as shown in FIG. 3, the first board part 51 and the first board part 51 arranged along the inner wall surface of the bottom wall 21.
  • the second plate portion 52 is bent along a substantially right angle from one end thereof and rises upward, and is disposed along the inner wall surface of the first side wall portion 23.
  • the first plate portion 51 includes a base portion 53 that contacts the inner wall surface of the bottom wall 21 and a connection portion 54 that is connected to the base portion 53 in a stepped manner and is floated above the window portion 28. .
  • the end of the interconnector 93 is connected to the tip of the connecting portion 54 by soldering.
  • the conductor 41 of the cable 40 is connected in the two terminal boards 50 located in the both ends of a parallel direction.
  • the second plate portion 52 has a shape wider than the first plate portion 51, and the diode 60 is supported on the plate surface.
  • the second plate portions 52 are arranged in parallel on the inner wall surface of the first side wall portion 23 with a slight gap therebetween.
  • the diode 60 is a bypass diode that bypasses the reverse-biased current. As shown in FIGS. 1 and 2, the diode 60 is a second of the three adjacent terminal plates 50 (excluding the terminal plate 50 at one end in the parallel direction). The plate portion 52 is abutted and supported. Specifically, the diode 60 includes an element main body (not shown) serving as a heat generating portion, a pair of leads 62 connected to the element main body, and a resin-made rectangular block-shaped outer shell surrounding the element main body. It consists of the part 63 and the heat sink 64 connected to an element main body.
  • the heat sink 64 is disposed so as to be exposed on the bottom surface of the outer shell portion 63. As shown in FIG. 3, the exposed surface of the heat radiating plate 64 is a heat radiating surface 65 that releases heat generated in the element body.
  • the heat dissipating surface 65 is disposed so as to face the side surface 82 of the frame main body 81 via the second plate portion 52 and the first side wall portion 23, and is disposed toward the side surface 82 of the frame main body 81.
  • the heat radiating surface 65 of the heat radiating plate 64 and the side surface 82 of the frame main body 81 are arranged to face each other substantially in parallel.
  • the heat radiating surface 65 of the heat radiating plate 64 is in contact with the second plate portion 52, and the plate surface of the second plate portion 52 is in contact with the side surface 82 of the frame body 81. For this reason, the heat generated in the element main body is efficiently transmitted from the heat radiating plate 64 to the frame main body 81 via the second plate portion 52.
  • the pair of leads 62 are configured to protrude from one side surface of the outer shell portion 63.
  • the leading end portion of the lead 62 is soldered to the second plate portion 52 of the adjacent terminal plate 50, whereby the terminal plates 50 are connected to each other via the diode 60.
  • the diode 60 is mounted and fixed on the second plate portion 52 of the terminal plate 50. Subsequently, each terminal board 50 is accommodated in the box body 20. In addition, the cable 40 is drawn into the box body 20 via the cable insertion tube portion 29 and the conductor 41 of the cable 40 is connected to the corresponding terminal plate 50. Further, the lead 62 of the diode 60 is soldered to the corresponding second plate portion 52 of the terminal plate 50.
  • the terminal box 10 is placed on the end portion of the solar cell module 90, and the interconnector 93 is drawn into the box body 20 from the window portion 28, and the end portion of the interconnector 93 is connected to the connection portion 54 of the corresponding terminal plate 50. Connect with solder.
  • the terminal box 10 is fixed at the normal position of the solar cell module 90, the first side wall portion 23 of the box body 20 is disposed in contact with the side surface 82 of the frame body 81 as shown in FIGS. .
  • the box body 20 is filled with a sealing material (not shown) such as a potting material, and after the sealing material is cured, a lid material (not shown) is put on the upper end opening edge of the box body 20.
  • the heat radiating plate 64, the second plate portion 52, the first side wall portion 23, and the frame 80 are arranged facing each other with almost no gap, and therefore, excellent heat transfer properties from the heat radiating plate 64 to the frame 80 are excellent.
  • the first side wall portion 23 is thinner than the second to fourth side wall portions 24, 25, and 26, the heat transfer from the second plate portion 52 to the frame main body 81 becomes better.
  • the frame 80 is made of aluminum having a high thermal conductivity and functions as a good heat radiating member, the diode 60 is prevented from trapping heat, and the rectifying function of the diode 60 is exhibited well.
  • the heat radiation surface 65 of the diode 60 is disposed toward the metal frame 80 provided along the outer peripheral portion 95 of the solar cell module 90.
  • the element body When the element body generates heat, the heat is efficiently radiated from the heat radiating surface 65 to the frame 80 side. Therefore, the terminal box 10 with improved heat dissipation is provided.
  • the terminal plate 50 since the existing frame 80 is used as a heat radiating member, the terminal plate 50 does not need to have a heat radiating function, and the terminal plate 50 can be downsized. As a result, the entire terminal box 10 can be reduced in size.
  • the first side wall portion 23 of the box body 20 is disposed along the side surface 82 of the frame body 81, and the heat dissipation surface 65 of the diode 60 faces the frame body 81 with the first side wall portion 23 interposed therebetween.
  • the terminal box 10 can be arranged compactly along the main body 81.
  • the terminal plate 50 includes a first plate portion 51 and a second plate portion 52 that is cross-connected to the first plate portion 51, and the first plate portion 51 is disposed along the inner wall surface of the bottom wall 21.
  • the entire terminal box 10 can be further downsized.
  • the present invention is not limited to the embodiments described with reference to the above description and drawings.
  • the following embodiments are also included in the technical scope of the present invention.
  • (1) The diode may not be placed on the terminal board.
  • (2) A configuration in which the first side wall portion of the box body is not interposed between the diode and the frame may be employed.
  • (3) A configuration in which a dedicated heat radiating plate material is provided in the box body separately from the terminal board may be employed.
  • a configuration may be adopted in which a pair of terminal plates to which a cable is connected is provided in the box body, and one diode is connected to both terminal plates.
  • a slight gap may be provided between the first side wall and the frame.
  • a slight gap may be provided between the second plate portion and the first side wall portion.
  • a slight gap may be provided between the heat radiating plate and the second plate portion.

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  • Photovoltaic Devices (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

L'invention concerne une boîte à bornes pour un module de cellules solaires, offrant un meilleur rayonnement thermique. Un corps principal de boîte (20) de la boîte à bornes (10) abrite une pluralité de bornes plates (50) et une diode (60) connectée de manière à pouvoir être alimentée par les bornes plates (50). La diode (60) possède une surface de rayonnement thermique (65) disposée en face d'un carter métallique (80) fixé sur la périphérie extérieure (95) d'un module de cellules solaires (90). Lorsque la diode (60) produit de la chaleur, la chaleur est transmise de la surface de rayonnement thermique (65) au carter (80).
PCT/JP2012/054143 2011-09-26 2012-02-21 Boîte à bornes pour module de cellules solaires WO2013046744A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-209674 2011-09-26
JP2011209674A JP2013073953A (ja) 2011-09-26 2011-09-26 太陽電池モジュール用端子ボックス

Publications (1)

Publication Number Publication Date
WO2013046744A1 true WO2013046744A1 (fr) 2013-04-04

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PCT/JP2012/054143 WO2013046744A1 (fr) 2011-09-26 2012-02-21 Boîte à bornes pour module de cellules solaires

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JP (1) JP2013073953A (fr)
WO (1) WO2013046744A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09271179A (ja) * 1996-01-29 1997-10-14 Sanyo Electric Co Ltd 太陽電池装置
JPH11354822A (ja) * 1998-06-05 1999-12-24 Sanyo Electric Co Ltd 両面入射型太陽電池モジュール
JP2005057008A (ja) * 2003-08-01 2005-03-03 Oonanba Kk 太陽電池パネル用端子ボックス
JP2005251980A (ja) * 2004-03-04 2005-09-15 Oonanba Kk 太陽電池パネル用端子ボックス
WO2011132748A1 (fr) * 2010-04-21 2011-10-27 京セラ株式会社 Module photovoltaïque

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09271179A (ja) * 1996-01-29 1997-10-14 Sanyo Electric Co Ltd 太陽電池装置
JPH11354822A (ja) * 1998-06-05 1999-12-24 Sanyo Electric Co Ltd 両面入射型太陽電池モジュール
JP2005057008A (ja) * 2003-08-01 2005-03-03 Oonanba Kk 太陽電池パネル用端子ボックス
JP2005251980A (ja) * 2004-03-04 2005-09-15 Oonanba Kk 太陽電池パネル用端子ボックス
WO2011132748A1 (fr) * 2010-04-21 2011-10-27 京セラ株式会社 Module photovoltaïque

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JP2013073953A (ja) 2013-04-22

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