WO2011055576A1 - 太陽電池モジュール用端子ボックス - Google Patents
太陽電池モジュール用端子ボックス Download PDFInfo
- Publication number
- WO2011055576A1 WO2011055576A1 PCT/JP2010/062768 JP2010062768W WO2011055576A1 WO 2011055576 A1 WO2011055576 A1 WO 2011055576A1 JP 2010062768 W JP2010062768 W JP 2010062768W WO 2011055576 A1 WO2011055576 A1 WO 2011055576A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- solar cell
- cell module
- outer peripheral
- terminal box
- Prior art date
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims description 14
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 8
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229920001955 polyphenylene ether Polymers 0.000 claims description 6
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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.
- the solar battery panel constituting the solar power generation system is composed of a plurality of solar battery modules, and the electrodes of the solar battery modules are connected in series or in parallel via a terminal box.
- the terminal box includes a shallow box-shaped synthetic resin housing, a plurality of terminal plates laid on the bottom of the housing and electrically connected to the solar cell module, and between two corresponding terminal plates. And a reverse-load bypass diode (rectifier element) that is bridged to the base.
- the main body part which becomes the heat generating part of the diode is supported by a metal heat sink.
- the lead of the electrode part of the solar cell module is soldered to one end of the terminal board through an opening formed in the casing, and the terminal of the cable led out of the casing to the other end of the terminal board
- the parts are caulked and connected. And the bottom face of a housing
- the heat resistance limit of the housing may be exceeded and the bottom may be plastically deformed. Then, the bottom surface of the bottom portion is not flat, and in the state of attachment to the solar cell module, an air layer is interposed between the bottom surface of the bottom portion and the attachment surface of the solar cell module, so that heat transfer to the solar cell module is achieved. May decrease.
- the present invention has been completed based on the above circumstances, and an object of the present invention is to provide a solar cell module terminal box with improved heat conductivity.
- the present invention is a solar cell module terminal box attached to a solar cell module, a plurality of terminal plates, a housing having an outer peripheral portion in which each terminal plate is accommodated and surrounding an outer periphery of each terminal plate, A rectifying element for reverse load bypass connected to the corresponding two terminal plates, and a radiating plate supported by a rectifying element body serving as a heat generating portion of the rectifying element and configured integrally or separately with the terminal plate;
- the heat-dissipating plate is arranged between the heat radiating plate and the solar cell module, and includes a heat transfer portion having higher heat resistance than the outer peripheral portion.
- the heat transfer part has higher heat resistance than the outer peripheral part of the casing, the heat transfer part is prevented from being plastically deformed by the heat of the rectifying element body. Therefore, it is avoided that an air layer is interposed between the solar cell module and the heat transfer section, and heat transfer to the solar cell module is improved.
- the casing has a bottom part on which the terminal plate is supported inside the outer peripheral part, and the bottom part constitutes a heat transfer part. According to this, it can attach to a solar cell module in the state which mounted the terminal board in the bottom part, and it is excellent in attachment property.
- the bottom portion is slide-mounted along the inner edge of the outer peripheral portion. According to this, a bottom part can be easily attached to an outer peripheral part.
- a terminal plate is fixed to the bottom, a lock hole is provided in the terminal plate, a lock piece is provided on the outer periphery so as to be able to bend, and the bottom is properly attached to the outer periphery.
- the lock piece is elastically fitted into the lock hole, and the terminal plate and the bottom are held on the outer periphery.
- a bottom part is fixed to an outer peripheral part via a terminal board, and the shape of a bottom part is simplified.
- a window hole is opened between the bottom portion and the outer peripheral portion, and corresponds to the solar cell group of the solar cell module through the window hole and into the housing. Lead is drawn. In this way, there is no need to provide a window hole specific to the bottom, and the shape of the bottom is simplified.
- the bottom and the terminal plate are integrated by insert molding. According to this, detachment
- the heat transfer part In the state attached to the solar cell module, the heat transfer part is kept in a state where it is not exposed to the outside.
- the heat transfer section can be configured with a material having low weather resistance, and the range of options when selecting the material of the heat transfer section is expanded.
- the heat transfer part is disposed at least between the rectifying device body and the solar cell module. If it carries out like this, the heat which generate
- the outer peripheral portion is made of one or more materials selected from PPO (polyphenylene oxide) and PPE (polyphenylene ether), and the heat transfer portion is PPS (polyphenylene sulfide), PET (polyethylene terephthalate), It consists of 1 type, or 2 or more types of materials chosen from PBT (polybutylene terephthalate).
- PPO polyphenylene oxide
- PPE polyphenylene ether
- PPS polyphenylene sulfide
- PET polyethylene terephthalate
- It consists of 1 type, or 2 or more types of materials chosen from PBT (polybutylene terephthalate).
- an outer peripheral part is comprised with the material excellent in the weather resistance and hydrolysis resistance
- the bottom part is comprised with the material excellent in heat resistance and heat conductivity.
- the heat sink is configured integrally with the terminal plate, and each terminal plate includes a terminal on which the rectifying element body is not supported, and this terminal has the smallest surface area among
- a terminal box for a solar cell module with improved heat conductivity is provided.
- FIG. 2 is a cross-sectional view taken along the line AA in FIG.
- FIG. 3 is a cross-sectional view taken along the line BB in FIG.
- FIG. 2 is a cross-sectional view taken along the line CC of FIG.
- FIG. 6 is a DD sectional view of FIG. 5.
- It is a bottom view of the unit with which the terminal board and the bottom part were integrated.
- It is a top view of an outer peripheral part.
- In the terminal box for solar cell modules which concerns on Embodiment 2 it is a top view of the state in which the terminal plate was mounted in the bottom part. It is a top view of a bottom part.
- the terminal box for a solar cell module includes a housing 10, a terminal plate 60, and a bypass diode 80.
- the housing 10 is made of synthetic resin and has a plate shape as a whole, and includes a bottom portion 11 and an outer peripheral portion 12 surrounding the periphery as shown in FIGS. 1 and 10.
- the bottom surface of the bottom portion 11 is a flat surface 13 and is attached in close contact with a mounting surface (back surface in use) of the solar cell module. In the attached state to the solar cell module, the bottom 11 is concealed outside in an unexposed state, and the outer peripheral portion 12 is exposed outside.
- the bottom part 11 and the outer peripheral part 12 are separate from each other and are detachable from each other. Moreover, the bottom part 11 and the outer peripheral part 12 are comprised with the mutually different material.
- the outer peripheral portion 12 is made of any material selected from PPO (polyphenylene oxide), PPE (polyphenylene ether), and PVC (polyvinyl chloride), and the bottom portion 11 is PPS (polyphenylene sulfide). ), PET (polyethylene terephthalate), and PBT (polybutylene terephthalate). That is, the outer peripheral portion 12 is made of a material excellent in weather resistance and hydrolysis resistance, and the bottom portion 11 is made of a material superior in heat resistance and heat conductivity than the outer peripheral portion 12. Further, the outer peripheral portion 12 is generally less expensive than the bottom portion 11.
- the outer peripheral part 12 has the rectangular frame-shaped surrounding wall 14 which divides the circumference
- a pair of cylindrical portions 15 into which a cable 90 connected to the terminal plate 60 is inserted protrudes rearward.
- a pair of left and right stage portions 16 are formed in front of both cylindrical portions 15 on both ends in the width direction of the rear end portion 36 of the peripheral wall 14. Both stage parts 16 are connected across both end corners of the peripheral wall 14, and have a horizontally long through hole 17 at the center.
- a substantially rectangular lock piece 18 capable of locking the terminal plate 60 is formed at the center in the width direction of the rear end portion 36 of the peripheral wall 14 so as to protrude forward (inside the peripheral wall 14).
- the lock piece 18 can be bent and deformed in the vertical direction with the inner surface of the peripheral wall 14 as a fulcrum, and has a lock protrusion 19 at the center thereof.
- a plurality of cover lock receiving portions 21 are formed on the inner peripheral surface of the peripheral wall 14 at intervals in the circumferential direction.
- a cover lock portion (not shown) of the cover (not shown) is engaged with the cover lock receiving portion 21, whereby the cover is held in a state of being fixed to the upper end of the peripheral wall 14.
- a pair of slide receiving portions 22 are formed on the inner peripheral surfaces of the left and right sides of the peripheral wall 14. As shown in FIG. 9, both the slide receiving portions 22 are formed in an elongated plate shape extending in the front-rear direction along the inner peripheral surface of the peripheral wall 14, and the stepped shape in which the front end portion is one step lower than the rear portion.
- first engaging receiving surfaces 23 that engage with slide portions 32 (described later) of the bottom portion 11 from below, and are more than the front end portions of both slide receiving portions 22.
- the lower surface of the rear portion is a second engagement receiving surface 24 that engages with the slide portion 32 from above.
- the first and second engagement receiving surfaces 23 and 24 are horizontal surfaces positioned at substantially the same height.
- the bottom portion 11 is insert-molded integrally with the terminal plate 60 and has a flat bottom wall 25 that supports the plurality of terminal plates 60.
- Each terminal board 60 is arranged in parallel in the width direction on the upper surface of the bottom wall 25.
- each terminal plate 60 has a flat plate shape made of a conductive metal, and is positioned at both ends in the width direction and connected to both the plus and minus cables 90, and a pair of left and right cable connection terminals 60A. It consists of left and right relay connection terminals 60B located between the cable connection terminals 60A.
- An outer peripheral portion 12 is disposed on the outer periphery of each terminal plate 60.
- An insertion hole 61 is formed in the front end portion of each terminal plate 60, and a lead terminal portion is inserted into the insertion hole 61 and connected by soldering or the like.
- a rectifier element body 81 (described later) of the bypass diode 80 is placed on the upper surface of the intermediate portion in the front-rear direction of each terminal plate 60 except for the relay connection terminal 60B located on the left side in the drawing.
- the bypass diode 80 includes a rectifier element body 81 having a chip portion surrounded by a square block with resin, and an anode side and a cathode side connected to the chip portion and extending in the width direction from one side surface of the rectifier element body 81. Both connecting legs 82 are provided.
- the rectifying element body 81 is a heat generating portion that is heated to near 200 ° C. by the rectifying action of the chip portion.
- each said terminal board 60 has the function as a heat sink which thermally radiates the heat which the rectifier element main body 81 generate
- Both connecting legs 82 are arranged substantially in parallel with each other, and the tip of one connecting leg 82 is soldered and connected to its own terminal plate 60 that supports the rectifying element body 81, and the other connecting leg 82 The tip is soldered and connected to the adjacent terminal board 60.
- a substantially rectangular connecting piece 62 is formed on the side edge of each terminal plate 60 so as to protrude in the width direction, and the tip of the connecting leg 82 is inserted into each connecting piece 62 and soldered.
- a connection hole 63 to be connected is formed so as to penetrate therethrough.
- a fixing piece 84 is formed on the other side surface of the rectifying element body 81 so as to protrude in the width direction.
- the screw member 70 penetrates and is fixed to the fixing piece 84, and the screw portion 71 of the screw member 70 is screwed into the screw hole 64 formed in the terminal plate 60.
- the bypass diode 80 is fixed to the terminal board 60 via the member 70.
- a burring portion 65 having a screw hole 64 protrudes downward from the terminal plate 60, and the tips of the burring portion 65 and the screw portion 71 are inserted into the bottom wall 25.
- An escape hole 28 is formed.
- the bottom wall 25 is formed with a stepped built-up portion 29 having a relief hole 28, and the terminal plate 60 has a stepped portion 66 bent in a trapezoidal shape along the outer surface of the built-up portion 29. Is formed.
- a pair of left and right barrels 67 protrude from the rear ends of both cable connection terminals 60A. Both barrel portions 67 are caulked and connected to a core 91 exposed at the end of the cable 90.
- an anvil (not shown) is passed through the through hole 17 of the stage portion 16 from below.
- the barrel portion 67 sandwiches the core 91 of the cable 90 between the crimper and the anvil.
- Both cable connection terminals 60A have substantially the same surface area
- the right relay connection terminal 60B has the largest surface area among all the terminal plates 60
- all the left relay connection terminals 60B have the same surface area.
- the terminal surface 60 has the smallest surface area.
- the reason why the left relay connection terminal 60B has the smallest surface area in the drawing is that the rectifier element body 81 of the bypass diode 80 is not supported here, and accordingly, the surface area of the adjacent right relay connection terminal 60B is reduced. By spreading, the heat dissipation of the right relay connection terminal 60B is enhanced and the space efficiency is improved.
- a substantially rectangular lock hole 68 into which the lock projection 19 of the lock piece 18 is elastically fitted is formed in the center in the width direction of the rear end portion of the relay connection terminal 60B on the right side as shown in the drawing.
- the relay connection terminal 60B is provided with a plurality of slits 69 bent in a crank shape from the base portion of the connection piece 62, and the bypass diodes 80 supported by the terminal plates 60 are connected to each other through the slits 69. Thermal interference is prevented.
- the bypass diodes 80 are staggered in the width direction so as to avoid mutual thermal interference. Specifically, the bypass diodes 80 supported by the relay connection terminal 60B are more connected to both cable connection terminals 60A. It is arranged in front of the bypass diode 80 supported by.
- a plurality of bridge portions 31 are formed on the upper surface of each terminal board 60 so as to extend in the width direction.
- Each bridge portion 31 is formed in a narrow strip shape that extends integrally from the upper surface of the bottom wall 25 and sandwiches each terminal plate 60 with the bottom wall 25, and is an individual bridge portion 31 ⁇ / b> A that is bridged for each terminal plate 60.
- a collective bridge portion 31B that is cross-linked to all the terminal boards 60 at once.
- the collective bridge portion 31B is positioned behind the individual bridge portion 31A and extends over substantially the entire width of the bottom wall 25.
- the bottom wall 25 is disposed between the rectifying element body 81 and the solar cell module, and as shown in FIG. 7, the barrel portion 67, the burring portion 65, the periphery of the insertion hole 61, the lock of the cable connection terminals 60A
- the periphery of the hole 68 and the periphery of the connection hole 63 are left in close contact with the lower surface of each terminal board 60.
- the bottom wall 25 is divided into three parts for each bypass diode 80, and among these, the surface area of the bottom wall 25 that supports the central bypass diode 80 is maximized.
- the bottom wall 25 has a function as a heat transfer portion that transmits heat generated by the rectifying element body 81 to the solar cell module side by being positioned between the terminal plate 60 and the solar cell module. .
- both the slide parts 32 include a rib-like slide main body part 32 ⁇ / b> A extending in the front-rear direction, a first slide part 32 ⁇ / b> B projecting laterally from the front end part of the slide main body part 32 ⁇ / b> A, and a first slide part. It has the 2nd slide part 32C which is located in the back of 32B and protrudes sideways from the slide main-body part 32A. The first slide portion 32B is disposed above the second slide portion 32C, and as shown in FIG.
- the first engagement portion 23 is in surface contact with the first engagement receiving surface 23 of the slide receiving portion 22 on the lower surface thereof. It has a mating surface 32D.
- the second slide portion 32C extends longer than the first slide portion 32B, and can be brought into surface contact with the second engagement receiving surface 24 of the slide receiving portion 22 on the upper surface thereof as shown in FIG.
- a second engagement surface 32E is provided.
- the first and second engagement surfaces 32D and 32E are disposed at substantially the same height.
- a partition wall 38 is formed on the upper surface of the bottom wall 25 to partition adjacent terminal plates 60.
- each terminal plate 60 is insert-molded together with the bottom 11 in a state where the front ends thereof are integrally connected, thereby forming the unit shown in FIGS.
- the rectifying element main body 81 of the bypass diode 80 is placed on each terminal plate 60, the screw member 70 is screwed into the screw hole 64, and the bypass diode 80 is attached to each terminal plate 60.
- the front ends of the terminal boards 60 are separated from each other at an appropriate timing after the insert molding.
- the connection legs 82 of the bypass diodes 80 inserted into the connection holes 63 of the terminal plates 60 are soldered, and the bypass diodes 80 are connected to the terminal plates 60.
- the bypass diode 80 may be attached after the bottom portion 11 is attached to the outer peripheral portion 12 described later.
- the bottom 11 (the above unit) is inserted into the peripheral wall 14 of the outer peripheral portion 12 from below. At this time, the bottom 11 is positioned slightly in front of the normal mounting position. In this state, the bottom portion 11 is moved rearward, the first engagement receiving surface 23 of the slide receiving portion 22 is slid on the first engagement surface 32D of the first slide portion 32B, and the second slide portion 32C is The second engagement receiving surface 24 of the slide receiving portion 22 is slid on the second engagement surface 32E.
- the bottom portion 11 reaches the proper mounting position in this manner, the rear end of the bottom wall 25 is abutted against the front end of the rear end portion 36 of the outer peripheral portion 12 and the relay connecting terminal 60B is bent while the lock piece 18 is bent.
- the lock projection 19 is elastically fitted into the lock hole 68, thereby restricting the back-and-forth movement of the bottom 11 relative to the outer peripheral portion 12.
- the first engagement surface 32D of the first slide portion 32B comes into contact with the first engagement reception surface 23 of the slide reception portion 22 so that the bottom portion 11 with respect to the outer peripheral portion 12 is contacted.
- the downward displacement is regulated (see FIG. 4)
- the second engagement surface 32E of the second slide portion 32C comes into contact with the second engagement reception surface 24 of the slide reception portion 22 so that the outer periphery portion 12 is displaced.
- the upward displacement of the bottom 11 is restricted (see FIG. 3). Therefore, the bottom portion 11 can be fixed to the outer peripheral portion 12 by performing a simple operation of sliding the bottom portion 11 within the peripheral wall 14 of the outer peripheral portion 12.
- the cable 90 is inserted into the cylindrical portion 15 of the housing 10 from the rear, and the barrel portions 67 of the two cable connection terminals 60A are caulked and connected to the core wire 91 placed on the stage portion 16. Further, a waterproof cap 40 made of resin is put between the tube portion 15 and the cable 90 to seal the inside of the tube portion 15 in a watertight manner.
- the bottom surface (flat surface 13) of the bottom 11 is brought into close contact with the mounting surface of the solar cell module, and the casing 10 is fixed to the solar cell module with an adhesive, double-sided tape, bolts, or the like.
- the lead connected to the electrode of the solar cell module is drawn into the housing 10 through the window hole 27, and the lead is soldered to the front end portion of each terminal plate 60.
- an insulating resin such as silicon resin is put into the housing 10, and after the insulating resin is solidified, a cover is placed on the housing 10.
- the rectifying element body 81 of the bypass diode 80 when the rectifying element body 81 of the bypass diode 80 generates heat during use, the heat is radiated from the terminal plate 60 to the solar cell module side via the bottom 11.
- the bottom 11 is made of PPS (polyphenylene sulfide) or the like, which is more excellent in heat resistance and heat transfer than the outer peripheral portion 12, the structure is less susceptible to thermal damage. Accordingly, the plastic deformation of the bottom portion 11 due to the heat generation of the rectifying element body 81 is prevented, and the flatness of the bottom surface of the bottom portion 11 is maintained. As a result, it is avoided that an air layer is interposed between the bottom surface of the bottom portion 11 and the mounting surface of the bypass diode 80, and heat transfer to the solar cell module side is improved.
- casing 10 comprises the heat-transfer part, it can attach to a solar cell module in the state which mounted the terminal board 60 on the bottom part 11, and it is excellent in attachment property. . Furthermore, since the slide part 32 slides on the slide receiving part 22, the bottom part 11 is slid and mounted on the outer peripheral part 12, so that the bottom part 11 and the outer peripheral part 12 can be easily integrated. Furthermore, since the bottom 11 and each terminal plate 60 are integrated by insert molding, the terminal plate 60 is reliably prevented from being detached from the bottom 11.
- the bottom 11 is kept in a state where it is not exposed to the outside, a material having low weather resistance can be used as the bottom 11, and the range of options when selecting the material of the bottom 11 is widened.
- the bottom part 11 is necessarily provided in the position facing the part which supports the rectifier element main body 81 in the terminal board 60, the heat which generate
- Embodiment 2 11 and 12 show Embodiment 2 of the present invention.
- the second embodiment is different from the first embodiment in that the terminal plate 60F and the bottom 11A are not insert-molded.
- Other configurations are the same as those of the first embodiment, and the same reference numerals are given to the same configurations as those of the first embodiment.
- a circular mounting hole 59 is formed through the terminal plate 60F except for the relay connection terminal 60B on the left side in the drawing.
- a plurality of locking pieces 58 are formed along the circumferential direction at the hole edges of the mounting holes 59 in each terminal plate 60F.
- Each locking piece 58 has a radial shape as a whole, and can be bent and deformed in the vertical direction.
- a columnar protrusion 39 is formed at a position corresponding to each mounting hole 59 on the bottom wall 25A of the bottom portion 11A.
- the attachment method of the bypass diode 80 to each terminal plate 60F, the attachment method of the bottom portion 11A to the outer peripheral portion 12, the installation method of the housing 10 to the solar cell module, and the like are the same as those in the first embodiment, and are redundant. Description is omitted.
- 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.
- a configuration in which a metal heat transfer portion is interposed between the terminal plate and the solar cell module may be employed.
- a metal heat transfer section is preferably provided for each terminal board, thereby preventing a short circuit between the terminal boards.
- the heat transfer part having higher heat resistance than the outer peripheral part is interposed between the terminal plate and the solar cell module, the heat transfer part may not be integrated with the outer peripheral part.
- the plate member that supports the diode may be a simple heat radiating plate that is configured separately from the terminal plate and does not have a function as a terminal (connection portion of an electric circuit).
- Each terminal board may be composed of only a pair of cable connection terminals, and one bypass diode may be bridged between both cable connection terminals.
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Abstract
Description
(1)筐体は、外周部の内側に、端子板が支持される底部を有し、底部が伝熱部を構成している。これによれば、底部に端子板を載せた状態で太陽電池モジュールに取り付けることができ、取付性に優れる。
(2)底部が、外周部の内側の縁部に沿ってスライド装着される。これによれば、外周部に底部を簡単に装着させることができる。
(3)底部には、端子板が固定され、端子板には、ロック孔が開口して設けられ、外周部には、ロック片が撓み可能に設けられ、底部が外周部に正規の装着されたときに、ロック片がロック孔に弾性的に嵌り、端子板及び底部が外周部に保持される。これによれば、端子板を介して底部が外周部に固定され、底部の形状が簡素化される。
(4)底部が外周部に正規に装着されたときに、底部と外周部との間に、窓孔が開口させられ、窓孔を通して筐体内に、太陽電池モジュールの太陽電池セル群と対応するリードが引き込まれる。こうすると、底部に特有の窓孔を設ける必要がなく、底部の形状が簡素化される。
(5)底部と端子板とが、インサート成形によって一体化されている。これによれば、端子板の底部からの離脱が確実に阻止される。
(6)太陽電池モジュールに取り付けられた状態では、伝熱部が外部に露出しない状態に保たれている。これによれば、例えば、耐候性の低い材料で伝熱部を構成することができ、伝熱部の材料を選ぶ際の選択肢の幅が広げられる。
(7)伝熱部が、少なくとも、整流素子本体と太陽電池モジュールとの間に配置されている。こうすると、整流素子本体で発生した熱が伝熱部に効率良く伝わることとなり、より良好な伝熱性が実現される。
(8)外周部が、PPO(ポリフェニレンオキサイド)、PPE(ポリフェニレンエーテル)から選ばれる1種もしくは2種以上の材質からなり、伝熱部が、PPS(ポリフェニレンスルファイド)、PET(ポリエチレンテレフタレート)、PBT(ポリブチレンテレフタレート)から選ばれる1種もしくは2種以上の材質からなる。これによれば、外周部が耐候性、耐加水分解性に優れた材質で構成され、底部が耐熱性、伝熱性に優れた材質で構成される。
(9)放熱板が端子板と一体に構成され、各端子板の中には、整流素子本体が支持されない端子が含まれ、この端子が、各端子板の中で最も小さい表面積を有している。整流素子本体が支持される端子が大きい表面積を有するため、筐体内の限られたスペース内で、端子板の放熱性を高めることができる。
本発明の実施形態1を図1ないし図10によって説明する。本実施形態に係る太陽電池モジュール用端子ボックスは、筐体10、端子板60、及びバイパスダイオード80を備えている。
まず、各端子板60がその前端同士を一体に連結させた状態で底部11とともにインサート成形され、これにより、図5ないし図7に示すユニットが構成される。続いて、各端子板60にバイパスダイオード80の整流素子本体81を載せ、ねじ部材70をねじ孔64に螺合させて、各端子板60にバイパスダイオード80を取り付ける。また、かかるインサート成形後の適宜タイミングで、各端子板60の前端同士を互いに切り離す。さらに、各端子板60の接続孔63に挿入されたバイパスダイオード80の接続脚82に半田を施し、各端子板60にバイパスダイオード80を接続させる。なお、このバイパスダイオード80の取り付け作業は、後述する外周部12に底部11を装着した後からであってもよい。
図11及び図12は、本発明の実施形態2を示す。実施形態2では、端子板60Fと底部11Aとがインサート成形されない点で、実施形態1とは異なる。その他の構成は、実施形態1と同様であり、実施形態1と同様の構成には同一符合を付す。
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)上記の底部に代えて、端子板と太陽電池モジュールとの間に金属製の伝熱部が介在する構成であってもよい。この場合、金属製の伝熱部が端子板毎に設けられるとよく、これによって端子板同士の短絡が防止される。
(2)端子板と太陽電池モジュールとの間に外周部よりも耐熱性の高い伝熱部が介在するが、この伝熱部が外周部と一体化されない構成であってもよい。
(3)ダイオードを支持する板材が、端子板とは別体に構成され、端子としての機能(電気回路の接続部分)をもたない単なる放熱板であってもよい。
(4)各端子板が一対のケーブル接続端子のみで構成され、両ケーブル接続端子間に1つのバイパスダイオードが架け渡される構成であってもよい。
11…底部(伝熱部)
12…外周部
60…端子板(放熱板)
80…バイパスダイオード(整流素子)
81…整流素子本体
Claims (10)
- 太陽電池モジュールに取り付けられる太陽電池モジュール用端子ボックスであって、
複数の端子板と、
前記各端子板が収容され、前記各端子板の外周を取り囲む外周部を有する筐体と、
対応する2つの端子板に接続される逆負荷時バイパス用の整流素子と、
前記整流素子の発熱部分となる整流素子本体が支持され、前記端子板と一体又は別体に構成される放熱板と、
前記放熱板と前記太陽電池モジュールとの間に配置され、前記外周部よりも耐熱性の高い伝熱部とを備えることを特徴とする太陽電池モジュール用端子ボックス。 - 前記筐体は、前記外周部の内側に、前記端子板が支持される底部を有し、前記底部が前記伝熱部を構成している請求項1記載の太陽電池モジュール用端子ボックス。
- 前記底部が、前記外周部の内側の縁部に沿ってスライド装着される請求項2記載の太陽電池モジュール用端子ボックス。
- 前記底部には、前記端子板が固定され、前記端子板には、ロック孔が開口して設けられ、前記外周部には、ロック片が撓み可能に設けられ、前記底部が前記外周部に正規の装着されたときに、前記ロック片が前記ロック孔に弾性的に嵌り、前記端子板及び前記底部が前記外周部に保持される請求項3記載の太陽電池モジュール用端子ボックス。
- 前記底部が前記外周部に正規に装着されたときに、前記底部と前記外周部との間に、窓孔が開口させられ、前記窓孔を通して前記筐体内に、前記太陽電池モジュールの太陽電池セル群と対応するリードが引き込まれる請求項3又は4記載の太陽電池モジュール用端子ボックス。
- 前記底部と前記端子板とが、インサート成形によって一体化されている請求項2ないし5のいずれか1項記載の太陽電池モジュール用端子ボックス。
- 前記太陽電池モジュールに取り付けられた状態では、前記伝熱部が外部に露出しない状態に保たれている請求項1ないし6のいずれか1項記載の太陽電池モジュール用端子ボックス。
- 前記伝熱部が、前記整流素子本体と前記太陽電池モジュールとの間に配置されている請求項1ないし7のいずれか1項記載の太陽電池モジュール用端子ボックス。
- 前記外周部が、PPO(ポリフェニレンオキサイド)、PPE(ポリフェニレンエーテル)から選ばれる1種もしくは2種以上の材質からなり、前記伝熱部が、PPS(ポリフェニレンスルファイド)、PET(ポリエチレンテレフタレート)、PBT(ポリブチレンテレフタレート)から選ばれる1種もしくは2種以上の材質からなる請求項1ないし8のいずれか1項記載の太陽電池モジュール用端子ボックス。
- 前記放熱板が前記端子板と一体に構成され、前記各端子板の中には、前記整流素子本体が支持されない端子が含まれ、この端子が、前記各端子板の中で最も小さい表面積を有している請求項1ないし9のいずれか1項記載の太陽電池モジュール用端子ボックス。
Priority Applications (3)
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US13/496,707 US20120174970A1 (en) | 2009-11-05 | 2010-07-29 | Terminal box for use with solar cell module |
CN2010800500962A CN102742026A (zh) | 2009-11-05 | 2010-07-29 | 太阳能电池模块用端子箱 |
DE112010004278T DE112010004278T5 (de) | 2009-11-05 | 2010-07-29 | Anschlusskasten für eine Verwendung mit einem Solarzellenmodul |
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JP2009253746A JP2011100810A (ja) | 2009-11-05 | 2009-11-05 | 太陽電池モジュール用端子ボックス |
JP2009-253746 | 2009-11-05 |
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WO2011055576A1 true WO2011055576A1 (ja) | 2011-05-12 |
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PCT/JP2010/062768 WO2011055576A1 (ja) | 2009-11-05 | 2010-07-29 | 太陽電池モジュール用端子ボックス |
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JP (1) | JP2011100810A (ja) |
CN (1) | CN102742026A (ja) |
DE (1) | DE112010004278T5 (ja) |
WO (1) | WO2011055576A1 (ja) |
Cited By (2)
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JP2013055305A (ja) * | 2011-09-06 | 2013-03-21 | Nippon Tanshi Kk | 端子ボックスにおける端子部材の取付構造 |
WO2015093236A1 (ja) * | 2013-12-19 | 2015-06-25 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール用端子ボックス |
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JP5472128B2 (ja) * | 2011-01-13 | 2014-04-16 | 住友電装株式会社 | 太陽電池モジュール用端子ボックス |
JP5472134B2 (ja) * | 2011-01-20 | 2014-04-16 | 住友電装株式会社 | 太陽電池モジュール用端子ボックス |
JP2013229481A (ja) * | 2012-04-26 | 2013-11-07 | Sumitomo Wiring Syst Ltd | 太陽電池モジュール用端子ボックス |
CN205051644U (zh) * | 2015-08-26 | 2016-02-24 | 泰科电子(上海)有限公司 | 光伏接线盒 |
CN106685339A (zh) * | 2015-11-06 | 2017-05-17 | 泰科电子(上海)有限公司 | 光伏接线盒和二极管 |
CN205336219U (zh) * | 2015-12-08 | 2016-06-22 | 泰科电子(上海)有限公司 | 光伏接线盒和二极管 |
JP2018164324A (ja) * | 2017-03-24 | 2018-10-18 | 株式会社オートネットワーク技術研究所 | 電気接続箱 |
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US20120174970A1 (en) | 2012-07-12 |
JP2011100810A (ja) | 2011-05-19 |
CN102742026A (zh) | 2012-10-17 |
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