WO2012098701A1 - 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
- WO2012098701A1 WO2012098701A1 PCT/JP2011/061993 JP2011061993W WO2012098701A1 WO 2012098701 A1 WO2012098701 A1 WO 2012098701A1 JP 2011061993 W JP2011061993 W JP 2011061993W WO 2012098701 A1 WO2012098701 A1 WO 2012098701A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- terminal
- base plate
- solar cell
- cell module
- Prior art date
Links
- 229920005989 resin Polymers 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 34
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 8
- 229920001955 polyphenylene ether Polymers 0.000 claims description 8
- 229920006380 polyphenylene oxide Polymers 0.000 claims description 8
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 8
- 239000004800 polyvinyl chloride Substances 0.000 claims description 8
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 8
- -1 polybutylene terephthalate Polymers 0.000 claims description 5
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003566 sealing material 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
- 210000000078 claw Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 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.
- a terminal box for a solar cell module described in Patent Document 1 (hereinafter referred to as a terminal box) includes a plurality of terminal plates, a diode connected to two corresponding terminal plates, a terminal plate and a bottom wall that supports the diode, And a peripheral wall surrounding the bottom wall.
- the peripheral wall is integrally formed from the peripheral edge of the bottom wall.
- the diode has a heat generating body. When the heat generating body generates heat, the heat is radiated from the terminal plate to the solar cell panel side through the bottom wall.
- the bottom wall is integrally formed with a flexible elastic locking piece.
- the elastic locking piece interferes with the terminal plate and is elastically bent and deformed.
- the elastic locking piece is elastically restored, and the tip claw portion of the elastic locking piece is arranged to be able to lock the terminal plate. Thereby, the floating from the bottom wall of the terminal board is prevented.
- the bottom wall may be thermally damaged due to the heat generation of the diode. If it does so, there existed a possibility that the elastic locking piece integrally formed in the bottom wall might deform
- the present invention has been completed based on the above circumstances, and an object thereof is to reliably prevent the terminal board from being lifted while suppressing an increase in cost.
- the present invention is a solar cell module terminal box attached to a solar cell module, a plurality of terminal plates, a rectifying element connected to two corresponding terminal plates and having a heat generating portion, the terminal plate, A flat base plate for supporting the rectifying element; an outer plate having a lower heat resistance than the base plate and surrounding the base plate; and the outer plate to which the base plate is attached and fixed; A pressing piece that is integrated with a plate and arranged so as to be able to contact the surface side of the terminal plate as the base plate is attached to the outer plate, thereby restricting the lifting of the terminal plate from the base plate; It has the feature in having.
- the holding piece When the outer plate is attached to the base plate, the holding piece is disposed so as to be able to contact the surface side of the terminal board, and the lifting of the terminal board is restricted.
- the pressing piece since the pressing piece is formed integrally with the outer plate, it is possible to suppress an increase in cost compared to the case where the pressing piece is formed separately from the outer plate and the base plate.
- the outer plate since the outer plate has a lower heat resistance than the base plate, in other words, the base plate has a higher heat resistance than the outer plate, even if the heat generating portion of the rectifying element generates heat, the base plate is thermally damaged. Is avoided. Further, the outer plate that does not support the rectifying element is hardly damaged by heat, and the pressing piece is prevented from being deformed. As a result, the lifting of the terminal board is reliably prevented by the pressing piece.
- the present invention can take the following configurations.
- (2) The terminal plate may be sandwiched and held between the pressing piece and the base plate in a state where the base plate is mounted on the outer plate. Thereby, a terminal board is hold
- the base plate may be slid and attached to the outer plate. According to this, the base plate can be easily attached to the outer plate.
- the terminal plate is placed on the left and right support regions of the base plate, the outer plate is partitioned and formed by left and right side walls and front and rear front and rear walls, and the base plate is front and rear with respect to the outer plate. It is good to be slidable, and it is good for the presser piece to protrude in the inside space from each inner surface of the both side walls. With such a configuration, the left and right terminal boards are stably held by the corresponding pressing pieces.
- One terminal plate of each of the terminal plates has a larger surface area than the other terminal plate, and is a heat radiating plate that supports the rectifying element. The front and rear widths may be larger than those of the other pressing piece to restrict the lifting of the heat sink.
- a slide portion is formed on the base plate, a slide receiving portion that slides on the slide portion when the slide is mounted is formed on the outer plate, and the pressing piece is integrally connected to the slide receiving portion. Good. Such a configuration is excellent in space efficiency and simplifies the entire configuration.
- a protrusion is formed on the base plate, a hole is formed on the terminal plate, and a tip end portion of the protrusion passes through the hole and faces the surface side of the terminal plate, and is deformed by resin caulking.
- the resin plate is held between the terminal plate and the base plate, and the resin plate is pressed in a state in which the pressing piece restricts the lifting of the terminal plate. Since the terminal plate is positioned by the pressing piece while resin caulking is performed, the resin caulking operation can be performed smoothly.
- the base plate may be made of at least one selected from PBT (polybutylene terephthalate) and PPS (polyphenylene sulfide). This reliably prevents the base plate from being deformed due to heat damage.
- the outer plate may be made of at least one selected from PPO (polyphenylene oxide), PPE (polyphenylene ether), and PVC (polyvinyl chloride). According to this, the weather resistance and the hydrolysis resistance are excellent. In addition, since the base plate and the outer plate are formed by appropriately sharing roles as described above, the quality of the terminal box is improved.
- the present invention it is possible to obtain a terminal box for a solar cell module in which the increase in cost is suppressed and the terminal plate is prevented from being lifted.
- FIG. 2 is a sectional view taken along line AA in FIG. 1.
- FIG. 3 is a view corresponding to FIG. 2 before resin caulking.
- FIG. 2 is a sectional view taken along line BB in FIG.
- FIG. 2 is a cross-sectional view taken along the line CC of FIG.
- FIG. 2 is a sectional view taken along line DD in FIG. 1.
- It is a top view of a base plate. It is a top view of the base plate which supports a terminal board. It is a top view of an outer plate.
- a terminal box for a solar cell module (hereinafter simply referred to as a terminal box 10) according to Embodiment 1 includes a box body 20, a plurality of terminal plates 90, and one bypass diode (a heating element, hereinafter simply referred to as a diode 80). And).
- the box body 20 is made of synthetic resin and has a plate-like shape as a whole, and includes a rectangular base plate 21 and an outer plate 22 surrounding the base plate 21.
- the base plate 21 constitutes the bottom wall of the box body 20, and the outer plate 22 constitutes the peripheral wall of the box body 20.
- the base plate 21 is slidably attached to the outer plate 22 and fixed.
- the outer plate 22 has a rectangular frame shape rising from the peripheral edge of the base plate 21, and includes a pair of left and right side walls 23 and front and rear front and rear walls 24 and 25 as shown in FIG.
- a pair of left and right cable insertion portions 26 are formed on the rear wall 25.
- Each cable insertion portion 26 has a cylindrical shape that penetrates the rear wall 25 and protrudes backward, and the plus and minus cables 70 are respectively inserted into the inside from the rear.
- a rubber tube 75 is fitted to the cable insertion portion 26. The tube 75 is in close contact with the cable insertion portion 26 and the cable 70, and thereby has a role of sealing both liquid-tightly.
- a closing plate 27 that partially closes the inner space defined by the side walls 23 and the front and rear walls 24 and 25 is formed at the rear end of the box body 20.
- the closing plate 27 is continuous with the inner surfaces of the rear wall 25 and the side walls 23 and is disposed substantially parallel to the base plate 21.
- the closing plate 27 has a pair of left and right jig insertion holes 28 formed therethrough.
- the core wire 71 is exposed at the terminal portion of the cable 70.
- a barrel piece (described later) of the terminal plate 90 is connected to the core wire 71 by pressure bonding.
- the barrel piece is deformed by a jig made of an anvil (lower die) and a crimper (upper die) (not shown), and the barrel piece is wound around the core wire 71 in this state.
- the jig is inserted into the box body 20 through the jig insertion hole 28 of the closing plate 27.
- a plate-like elastic locking piece 29 is formed on the front end edge of the closing plate 27 so as to protrude forward at a position slightly closer to the one side than the center in the width direction.
- a locking projection 30 is formed so as to protrude.
- the elastic locking piece 29 has a role of locking the base plate 21 attached to the outer plate 22 and preventing the base plate 21 from being detached from the outer plate 22.
- First and second slide receiving portions 31 and 32 slidable with first and second slide portions 38 and 39 (described later) of the base plate 21 are formed on the inner surfaces of the side walls 23 so as to extend in the front-rear direction. ing. As shown in FIG. 5, the first slide receiving portion 31 extends forward from the front end portion of the closing plate 27 and falls one step at the front end portion.
- the second slide receiving portion 32 extends straight forward from substantially the same front and rear position as the front end of the first slide receiving portion 31, and is disposed at a position higher than the first slide receiving portion 31.
- the second slide receiving portion 32 is shorter than the first slide receiving portion 31.
- each pressing piece 33 has a rectangular plate shape elongated in the width direction, is integrally connected to the upper surface of the first slide receiving portion 31, and is disposed across the first slide receiving portion 31.
- the holding piece 33A on one side in the width direction has a smaller front-rear width than the holding piece 33B on the other side in the width direction, and is disposed behind the holding piece 33B on the other side in the width direction.
- the pressing piece 33A on one side in the width direction is disposed at a position overlapping the front end portion of the elastic locking piece 29 in the front-rear direction.
- the pressing piece 33 is capable of pressing an area (pressing area 98) that is at least half of the entire width of the terminal board 90.
- the outer plate 22 is made of at least one selected from PPO (polyphenylene oxide), PPE (polyphenylene ether), and PVC (polyvinyl chloride). That is, the outer plate 22 is made of a material having excellent weather resistance and hydrolysis resistance.
- PPO polyphenylene oxide
- PPE polyphenylene ether
- PVC polyvinyl chloride
- the base plate 21 has a rectangular flat plate shape as a whole as shown in FIG.
- a support region 34 for supporting the terminal plate 90 is formed on the upper surface of the base plate 21 so as to be divided into left and right.
- a partition wall 35 that partitions between the terminal plates 90 is raised and formed.
- a midway portion of the partition wall 35 is configured to be bent in a crank shape along the outer edge of the terminal plate 90.
- the base plate 21 is formed with a latch receiving portion 36 at a position continuous with the rear end portion of the partition wall 35 and closer to one side in the width direction.
- the latch receiving portion 36 has a rectangular shape in plan view and is configured to open to the rear, and the elastic latch piece 29 can be received in the interior thereof from the rear.
- a rectangular locking hole 37 into which the locking protrusion 30 is fitted is formed on the upper surface of the locking receiving portion 36.
- First and second slide portions 38 and 39 are formed on the left and right side edges of the base plate 21 so as to extend in the front-rear direction.
- the first slide portion 38 is configured to extend straight forward from the rear end of the base plate 21.
- the second slide portion 39 is configured to extend straight rearward from the front end of the base plate 21, and a gap is formed between the second slide portion 39 and the first slide portion 38.
- the second slide portion 39 is disposed at a position one step higher than the first slide portion 38 and is shorter than the first slide portion 38.
- a plurality of protrusions 40 are formed on the upper surface of the base plate 21.
- Each protrusion 40 has a substantially columnar shape, and is arranged in two on the left and right support regions 34 side by side.
- the protrusion 40 located on the other side in the width direction and on the front side is a protrusion 40 ⁇ / b> A having a larger diameter than the other protrusions 40.
- the base plate 21 is made of at least one selected from PBT (polybutylene terephthalate) and PPS (polyphenylene sulfide).
- the base plate 21 includes a reinforcing material such as glass fiber or talc.
- the thermal deformation temperature of the base plate 21 is at least 170 ° C. or higher, preferably 200 ° C. or higher. That is, the base plate 21 is made of a material that has better heat resistance than the outer plate 22. As a result, the base plate 21 is prevented from being deformed by the heat generated by the diode 80.
- the terminal plate 90 has a flat plate shape made of conductive metal, and is placed on each of the left and right support regions 34 in the base plate 21 as shown in FIG.
- the middle part of the terminal plate 90 in the front-rear direction is arranged so as to drop one step from the front and rear ends, and has a stepped step 91 between the front and rear ends.
- a lead connection portion 92 is formed to protrude forward
- a cable connection portion 93 is formed to protrude rearward.
- the cable connecting portion 93 is formed with a pair of barrel pieces 94 to which a plus-side or minus-side external connection cable 70 is connected.
- the lead connection portion 92 is formed with a connection hole 95 into which a terminal portion of a lead extending from an electrode of a solar cell module (not shown) is inserted and connected.
- the terminal plate located on the other side in the width direction among the terminal plates 90 is a heat radiating plate 90A that supports the diode 80 and releases heat generated by the diode 80.
- the heat radiating plate 90A has a surface area larger than that of the other adjacent terminal plate 90B, thereby ensuring good heat dissipation.
- Each terminal board 90 is formed with a hole 96 through which each protrusion 40 can be inserted.
- Each hole 96 is arranged at an interval on the front and rear sides of the terminal board 90.
- the hole located on the other side in the width direction and on the front side has a larger opening diameter than the other holes 96, and is a large-diameter hole 96A that can receive the large-diameter projection 40A.
- the diode 80 includes a diode body 81 in which a chip portion (not shown) is resin-molded in a square block shape, and a pair connected to the chip portion and projecting in the width direction from one surface of the diode body 81. Connection pins 82 on the anode side and the cathode side of the cathode.
- the diode body 81 is a heat generating portion that is heated up to 170 ° C. to 200 ° C. by the rectifying action of the chip portion.
- connection pin 82 is arranged substantially in parallel with each other, and the tip of one connection pin 82A is solder-connected to the heat sink 90A, and the tip of the other connection pin 82B is solder-connected to the adjacent terminal plate 90B. ing.
- the other connection pin 82 ⁇ / b> B is disposed across the partition wall 35.
- tip part of the connection pin 82 is mounted in the side edge of each terminal board 90 is projected and formed in the width direction (refer FIG. 8).
- the diode body 81 is formed with a flat plate-like attachment piece 83 on the side opposite to the side where the connection pins 82 are arranged.
- An attachment hole 84 through which the large-diameter protrusion 40A can be inserted is formed in the attachment piece 83.
- each protrusion 40 is inserted into the hole 96 of the terminal board 90, and the tip part protruding upward from the surface of the terminal board 90 in that state is caulked with resin (for example, heat caulked), whereby the tip part Is crushed to form a resin caulking portion 41.
- the resin caulking portion 41 has a flange shape that expands in the radial direction, and has a role of holding the terminal plate 90 between the resin plate 41 and the base plate 21.
- the large-diameter protrusion 40A is inserted from the large-diameter hole 96A of the terminal board 90 into the attachment hole 84 of the diode 80, and in this state, the tip portion protruding upward from the surface of the attachment piece 83 is resin caulked. As a result, the tip end portion is crushed to form a large-diameter resin caulking portion 41A.
- the terminal plate 90 corresponding to the support region 34 of the base plate 21 is supported so as to be fitted.
- the tip portion of each protrusion 40 protrudes upward from the hole 96 of the terminal plate 90 and the tip portion of the large-diameter protrusion 40 ⁇ / b> A It protrudes upward from the large-diameter hole 96A of 90A.
- each terminal board 90 is supported in the positioning state by the support area 34 of the base plate 21.
- the base plate 21 is slid from the lower front toward the rear with respect to the outer plate 22.
- the upper surface of the first slide portion 38 slides on the lower surface of the first slide receiving portion 31, and the second slide portion 39 covers the lower surface of the second slide receiving portion 32 and the upper surface of the first slide receiving portion 31. It slides and is inserted between the first and second slide receiving portions 31 and 32.
- the first and second slide portions 38 and 39 come into contact with the step portion of the first slide receiving portion 31, and further slide operation is restricted.
- the elastic locking piece 29 is inserted into the locking receiving portion 36, and the locking projection 30 is elastically fitted into the locking hole 37.
- the terminal plate 90 comes into contact with the pressing piece 33 from below as shown in FIG. 4, and the terminal plate 90 is lifted upward. Be regulated. At this time, the terminal plate 90 is sandwiched and held between the pressing piece 33 and the base plate 21.
- a substantially rectangular window 45 is defined between the front end of the base plate 21 and the front wall 24 of the outer plate 22.
- this window part 45 it arrange
- a heated die (not shown) is pressed against the tip of each projection 40 to crush the tip of each projection 40.
- a resin caulking portion 41 is formed to expand at the tip of each protrusion 40, and the terminal plate 90 is sandwiched and fixed between the resin caulking portion 41 and the base plate 21.
- the terminal plate 90 and the diode 80 are sandwiched and fixed between the large-diameter resin caulking portion 41A and the base plate 21.
- the resin caulking portion 41 is in close contact with the surface of the terminal plate 90, and the large diameter resin caulking portion 41 A is in close contact with the surface of the mounting piece 83 of the diode 80.
- the cable 70 is inserted from the rear into the cable insertion portion 26 at an appropriate timing, and the cable connection portion 93 of the terminal plate 90 is crimped and connected to the core wire 71 at the end portion of the cable 70 through the jig insertion hole 28.
- the lower surface of the base plate 21 is attached to the back surface side of the solar cell module with an attachment means such as an adhesive, a double-sided tape, or a bolt.
- an attachment means such as an adhesive, a double-sided tape, or a bolt.
- the terminal portion of the lead extending from the solar cell module is drawn into the box body 20 through the window 45 and soldered to the lead connection portion 92 of each terminal plate 90.
- a sealing material made of an insulating resin such as silicon resin is poured into the box body 20 from above. When the sealing material is cured, the connection portion between each terminal plate 90 and the cable 70, the connection portion between each terminal plate 90 and the lead, and the connection portion between each terminal plate 90 and the diode 80 are resin-sealed. .
- a cover (not shown) is put on the box body 20 from above, and the terminal box 10 is completed.
- the base plate 21 is made of a material having excellent heat resistance and heat transfer properties such as PBT (polybutylene terephthalate) containing a reinforcing material, the base plate 21 and thus the resin caulking portion 41 are plastically deformed by the heat effect from the diode 80. Is avoided. As a result, the close contact state between the resin caulking portion 41 and the terminal plate 90 and the large diameter resin caulking portion 41A and the diode 80 is appropriately maintained, and good heat transfer to the solar cell module is ensured.
- PBT polybutylene terephthalate
- the tip of the protrusion 40 (40A) is deformed by resin caulking to form a resin caulking portion 41 (41A), and the diode 80 is held between the resin caulking portion 41 (41A) and the base plate 21.
- a method other than screwing is provided.
- the base plate 21 has higher heat resistance than the outer plate 22 and the protrusions 40 (40A) are integrally formed on the base plate 21, the possibility that the resin caulking portion 41 (41A) is deformed is reduced. As a result, the reliability when holding the diode 80 is improved.
- the base plate 21 is made of at least one selected from PBT (polybutylene terephthalate) and PPS (polyphenylene sulfide), the base plate 21 including the resin caulking portion 41 (41A) is deformed due to thermal influence. It is surely prevented. In this case, since the base plate 21 includes a reinforcing material such as glass fiber, the base plate 21 is more reliably prevented from being deformed.
- the outer plate 22 is made of at least one selected from PPO (polyphenylene oxide), PPE (polyphenylene ether), and PVC (polyvinyl chloride), it has excellent weather resistance and hydrolysis resistance.
- PPO polyphenylene oxide
- PPE polyphenylene ether
- PVC polyvinyl chloride
- the holding piece 33 is disposed so as to be able to contact the surface side of the terminal plate 90, and the lifting of the terminal plate 90 is reliably restricted.
- the pressing piece 33 is formed integrally with the outer plate 22, it is possible to suppress an increase in cost compared to the case where the pressing piece 33 is formed separately from the outer plate 22 and the like.
- the base plate 21 has higher heat resistance than the outer plate 22, the outer plate 22 that does not support the diode 80 is hardly damaged by heat, and the pressing piece 33 is prevented from being deformed. As a result, the lifting of the terminal board 90 is reliably prevented by the pressing piece 33.
- the terminal board 90 is more reliably prevented from being lifted.
- the heat sink may be formed of a plate material that does not have a function as a terminal plate (electrical connection function).
- the base plate may support a relay terminal plate that is not connected to the cable, and a diode may be installed between each terminal plate and the relay terminal plate or between adjacent relay terminal plates. .
- the entire box body including the base plate may be made of a material having high heat resistance with a heat deformation temperature of 170 ° C. or higher.
- the resin caulking portion may be formed by heat deformation with an ultrasonic oscillator.
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- Photovoltaic Devices (AREA)
Abstract
Description
(1)前記端子板において前記押さえ片で覆われる押さえ領域が、前記端子板の全幅の半分以上であるとよい。これにより、端子板の浮き上がりがより確実に阻止される。
(2)前記アウタプレートに前記ベースプレートが装着された状態で、前記端子板が前記押さえ片と前記ベースプレートとの間に挟まれて保持されるとよい。これにより、端子板が位置決め状態で保持される。
(3)前記ベースプレートが前記アウタプレートにスライドして装着されるとよい。これによれば、ベースプレートがアウタプレートに簡単に装着される。
(4)前記端子板が前記ベースプレートの左右の支持領域に載置され、前記アウタプレートが左右の両側壁と前後の前後壁とで区画形成され、前記ベースプレートが前記アウタプレートに対して前後方向にスライド可能とされており、前記押さえ片が前記両側壁のそれぞれの内面から内側空間内に突出しているとよい。このような構成であれば、左右の端子板が対応する押さえ片により安定して保持される。
(5)前記各端子板のうちの一方の端子板は、他方の端子板より大きい表面積を有して前記整流素子を支持する放熱板とされ、前記各押さえ片のうちの一方の押さえ片は、他方の押さえ片より前後幅が大きくされて前記放熱板の浮き上がりを規制するものであるとよい。こうすると、放熱板が大型の押さえ片により確実に保持される。
(6)前記ベースプレートにはスライド部が形成され、前記アウタプレートにはスライド装着時に前記スライド部に摺動するスライド受け部が形成され、前記押さえ片が前記スライド受け部に一体に連結されているとよい。このような構成であれば、スペース効率に優れるとともに、全体の構成が簡素化される。
(7)前記ベースプレートには突起が形成され、前記端子板には孔が形成され、前記突起の先端部が、前記孔を貫通して前記端子板の表面側に臨み、かつ樹脂かしめによって変形されることで前記端子板を前記ベースプレートとの間に保持する樹脂かしめ部とされており、前記押さえ片が前記端子板の浮き上がりを規制した状態で前記樹脂かしめがなされるとよい。樹脂かしめがなされる間、端子板が押さえ片により位置決めされるため、樹脂かしめの作業を円滑に行うことができる。
(8)前記ベースプレートが、PBT(ポリブチレンテレフタレート)及びPPS(ポリフェニレンスルファイド)のうちから選択される少なくとも1種からなるとよい。これにより、ベースプレートが熱ダメージを受けて変形するのが確実に防止される。
(9)前記アウタプレートが、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)、及びPVC(ポリ塩化ビニル)のうちから選択される少なくとも1種からなるとよい。これによれば、耐候性、耐加水分解性に優れたものとなる。また、このようにベースプレートとアウタプレートとが適切に役割分担して形成されることにより、端子ボックスの品質が高められる。
本発明の実施形態1を図1ないし図9によって説明する。実施形態1に係る太陽電池モジュール用端子ボックス(以下、単に端子ボックス10という)は、ボックス本体20と、複数の端子板90と、1つのバイパスダイオード(発熱素子であって、以下、単にダイオード80という)とを備えている。
ここで、各突起40は、端子板90の孔96内に挿入され、その状態で端子板90の表面から上方へ突き出る先端部が樹脂かしめ(例えば、熱かしめ)されることにより、その先端部が圧潰されて樹脂かしめ部41となる。樹脂かしめ部41は、径方向に拡開するフランジ状をなし、ベースプレート21との間に端子板90を保持する役割を有している。この場合に、大径の突起40Aは、端子板90の大径の孔96A内からダイオード80の取付孔84内にかけて挿入され、その状態で取付片83の表面から上方へ突き出る先端部が樹脂かしめされることにより、その先端部が圧潰されて大径の樹脂かしめ部41Aとなる。
まず、ベースプレート21の支持領域34に対応する端子板90を嵌め込むように支持させる。図8に示すように、各端子板90がベースプレート21に支持されると、各突起40の先端部が端子板90の孔96から上方へ突き出るとともに、大径の突起40Aの先端部が放熱板90Aの大径の孔96Aから上方へ突き出る。これにより、各端子板90はベースプレート21の支持領域34に位置決め状態で支持される。
突起40(40A)の先端部が樹脂かしめによって変形されることで樹脂かしめ部41(41A)が形成され、この樹脂かしめ部41(41A)とベースプレート21との間にダイオード80が保持されるため、ダイオード80を固定するに際し、ねじ止め以外の方法が提供される。また、ベースプレート21がアウタプレート22より高い耐熱性を有し、このベースプレート21に突起40(40A)が一体に形成されているため、樹脂かしめ部41(41A)が変形する可能性が低くなる。その結果、ダイオード80を保持する際の信頼性が高められる。このとき、大径の樹脂かしめ部41Aは、ダイオード80とともに放熱板90Aをベースプレート21との間に保持するため、放熱板90Aを固定する専用の固定手段を別に設ける必要がなく、構成が簡素化される。
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)放熱板が端子板としての機能(電気的接続機能)を有さない板材で形成されるものであってもよい。
(2)ベースプレートには、ケーブルに接続されない中継端子板が支持され、各端子板と中継端子板との間に、又は隣接する中継端子板間に、ダイオードが架設されるものであってもよい。
(3)ベースプレートを含むボックス本体全体が、熱変形温度170℃以上の耐熱性の高い材質で構成されるものであってもよい。
(4)樹脂かしめ部が、超音波発振器で加熱変形して形成されるものであってもよい。
21…ベースプレート
22…アウタプレート
33…押さえ片
40…突起
40A…大径の突起
41…樹脂かしめ部
41A…大径の樹脂かしめ部
80…ダイオード(整流素子)
81…ダイオード本体(発熱部分)
84…取付孔
90…端子板
90A…放熱板
96…孔
96A…大径の孔
98…押さえ領域
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、
対応する2つの前記端子板に接続され、かつ発熱部分を有する整流素子と、
前記端子板及び前記整流素子を支持する平板状のベースプレートと、
前記ベースプレートより低い耐熱性を有し、かつ前記ベースプレートの周りを包囲する枠状をなし、前記ベースプレートが装着して固定されるアウタプレートと、
前記アウタプレートと一体化され、前記アウタプレートに前記ベースプレートが装着されるに伴い、前記端子板の表面側に当接可能に配置され、これによって前記端子板の前記ベースプレートからの浮き上がりを規制する押さえ片とを備えてい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。 - 前記端子板において前記押さえ片で覆われる押さえ領域が、前記端子板の全幅の半分以上であることを特徴とする請求項1記載の太陽電池モジュール用端子ボックス。
- 前記アウタプレートに前記ベースプレートが装着された状態で、前記端子板が前記押さえ片と前記ベースプレートとの間に挟まれて保持されることを特徴とする請求項1又は2記載の太陽電池モジュール用端子ボックス。
- 前記ベースプレートが前記アウタプレートにスライドして装着されることを特徴とする請求項3記載の太陽電池モジュール用端子ボックス。
- 前記端子板が前記ベースプレートの左右の支持領域に載置され、前記アウタプレートが左右の両側壁と前後の前後壁とで区画形成され、前記ベースプレートが前記アウタプレートに対して前後方向にスライド可能とされており、前記押さえ片が前記両側壁のそれぞれの内面から内側空間内に突出していることを特徴とする請求項3又は4記載の太陽電池モジュール用端子ボックス。
- 前記各端子板のうちの一方の端子板は、他方の端子板より大きい表面積を有して前記整流素子を支持する放熱板とされ、前記各押さえ片のうちの一方の押さえ片は、他方の押さえ片より前後幅が大きくされて前記放熱板の浮き上がりを規制することを特徴とする請求項5記載の太陽電池モジュール用端子ボックス。
- 前記ベースプレートにはスライド部が形成され、前記アウタプレートにはスライド装着時に前記スライド部に摺動するスライド受け部が形成され、前記押さえ片が前記スライド受け部に一体に連結されていることを特徴とする請求項4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。
- 前記ベースプレートには突起が形成され、前記端子板には孔が形成され、前記突起の先端部が、前記孔を貫通して前記端子板の表面側に臨み、かつ樹脂かしめによって変形されることで前記端子板を前記ベースプレートとの間に保持する樹脂かしめ部とされており、前記押さえ片が前記端子板の浮き上がりを規制した状態で前記樹脂かしめがなされることを特徴とする請求項3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。
- 前記ベースプレートが、PBT(ポリブチレンテレフタレート)及びPPS(ポリフェニレンスルファイド)のうちから選択される少なくとも1種からなることを特徴とする請求項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。
- 前記アウタプレートが、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)、及びPVC(ポリ塩化ビニル)のうちから選択される少なくとも1種からなることを特徴とする請求項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。
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DE112011104750T DE112011104750T5 (de) | 2011-01-20 | 2011-05-25 | Anschlusskasten für ein Solarzellenmodul |
CN2011800654128A CN103329282A (zh) | 2011-01-20 | 2011-05-25 | 用于太阳能电池模块的端子盒 |
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JP2013045963A (ja) * | 2011-08-25 | 2013-03-04 | Sharp Corp | 端子ボックス、及びその端子ボックスを備えた太陽電池モジュール、並びにその端子ボックスを備えた太陽電池モジュールの製造方法 |
CN103856164B (zh) * | 2012-12-06 | 2015-12-23 | 台达电子工业股份有限公司 | 接线盒、太阳能电池以及在接线盒中安装汇流条的方法 |
JP6283278B2 (ja) * | 2014-07-18 | 2018-02-21 | ホシデン株式会社 | 端子ボックス及び出力線の接続方法 |
CN105790700B (zh) * | 2014-12-17 | 2019-02-22 | 泰科电子(上海)有限公司 | 光伏接线盒和光伏组件 |
JP6472318B2 (ja) * | 2015-04-30 | 2019-02-20 | ホシデン株式会社 | 端子ボックス及び太陽電池モジュール |
JP6602105B2 (ja) * | 2015-08-24 | 2019-11-06 | 矢崎総業株式会社 | コネクタ |
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 |
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JP5472134B2 (ja) | 2014-04-16 |
JP2012151363A (ja) | 2012-08-09 |
CN103329282A (zh) | 2013-09-25 |
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