WO2018158806A1

WO2018158806A1 - Solar cell module

Info

Publication number: WO2018158806A1
Application number: PCT/JP2017/007704
Authority: WO
Inventors: 飯村　和茂; 穣斎田
Original assignee: 株式会社東芝; 東芝エネルギーシステムズ株式会社
Priority date: 2017-02-28
Filing date: 2017-02-28
Publication date: 2018-09-07
Also published as: JPWO2018158806A1; JP6692489B2

Abstract

Provided is a solar cell module which is capable of inhibiting water leakage by inhibiting rainwater from falling on a roof board. A drainage path 12 along which rainwater that has infiltrated into a gap between a base part 11 and a cartridge part 21 flows to the outside of the base part 11 is provided to the base part 11. A draining rib 14 is provided to the rear side of the base part 11. The draining rib 14 blocks the flow of rainwater conveyed to the rear side of the base part 11 towards a roof board 2. Accordingly, rainwater can inhibited from falling on the roof board 2.

Description

Solar cell module

Embodiment of this invention is related with the solar cell module installed in a roof.

In recent years, solar cell modules have become widespread as devices that use solar energy. One installation mode of solar cell modules is installation on the roof of a building. Among them, the tile type in which the solar cell module is directly laid on the roof is attracting attention because of its good design and workability.

The tile-shaped solar cell module can smoothly flow rainwater flowing from the building direction to the eaves direction outside the building by organically combining a plurality of modules like a normal roof tile. In addition, a roof type solar cell module composed of a base portion and a cartridge portion has been proposed.

In a solar cell module having a base part and a cartridge part, it is possible to efficiently replace the solar panel by incorporating the solar panel into the cartridge part. However, a slight gap is formed between the base portion and the cartridge portion. Therefore, a very small amount of rainwater may enter the module from this gap.

Therefore, on the surface side of the base portion of the conventional solar cell module, there is formed a drainage path for flowing rainwater that has entered the gap between the base portion and the cartridge portion to the outside of the base portion. A drainage hole that penetrates the base part is formed at the end of the drainage path, and rainwater that has flowed down the drainage hole is collected in rain gutters and finally flows outside the building. Yes.

Japanese Patent Laid-Open No. 10-317622 Japanese Patent Laid-Open No. 11-17204 Japanese Patent Laid-Open No. 11-13224 JP 11-35346 A JP 2001-90294 A Japanese Patent Laid-Open No. 2001-111077 JP 2001-182264 A JP 2001-182234 A JP 2001-257372 A JP 2002-118278 A JP 2002-115372 A Japanese Patent Laid-Open No. 2003-3612 JP 2003-282900 A JP 2003-34484 A JP 2004-296842 A JP 2004-300824 A JP 2004-263544 A JP 2005-282053 A JP 2005-307687 A JP 2006-148043 A JP 2006-332286 A JP 2006-270024 A JP 2009-127327 A JP 2009-194024 A JP 2009-13785 A JP 2010-129853 A JP 2010-163815 A JP 2011-144634 A JP 2013-2244 A JP 2013-30734 A JP 2014-3075 A JP 2014-30013 A JP 2016-102370 A JP 2016-176254 A Tomi No.31191686

The following problems have been pointed out for conventional solar cell modules. That is, if there is a lot of rain, the drainage flowing outside from the drainage channel or drainage hole will not be in time, and rainwater may travel from the front side to the back side of the base part. Even if rainwater flows on the back side of the base part, if it falls to the surface of the base part of the module located below the base part, rainwater will flow through the drainage path formed in the module. There is no problem.

However, there is a possibility that rainwater will come off the module below and dripping on the base plate from the back of the base. Although a roofing sheet having a waterproof property is usually laid on the field plate, if dripping rainwater accumulates, it causes water leakage. In particular, in recent years when countermeasures against torrential rain are required, a solar cell module that can prevent rainwater from falling onto a field plate is desired.

Embodiments of the present invention have been made to solve the above-described problems, and an object of the present invention is to provide a solar cell module that can prevent rainwater from falling onto a field plate and prevent water leakage.

The solar cell module according to the embodiment of the present invention includes the following components in order to solve the above problems.
(A) A base portion mounted on a roof base plate.
(B) A cartridge part attached to the base part and provided with a solar panel.
(C) A drainage path that is provided on the front side of the base portion and flows rainwater that has entered the gap between the base portion and the cartridge portion to the outside of the base portion.
(D) A draining rib that is provided on the back side of the base portion and blocks the flow of rainwater that travels through the back side of the base portion and travels toward the base plate.

In addition, an embodiment of the present invention is also an aspect of the invention, which includes the following components.
(1) A base part mounted on a roof base plate.
(2) A cartridge portion attached to the base portion.
(3) A collar part that is detachable from the base part and presses the cartridge part from above.

The figure which shows the installation aspect of the module in 1st Embodiment. The top view of the base part of 1st Embodiment. The top view of the cartridge part of 1st Embodiment. Explanatory drawing of the rainwater which flows through the back surface of a base part. The principal part top view in the base part of 1st Embodiment. Sectional drawing of the base part and cartridge part of 1st Embodiment. The top view of the cartridge part of 1st Embodiment. The principal part perspective view of 2nd Embodiment. The perspective view of the collar part of 2nd Embodiment. The principal part perspective view of 3rd Embodiment. The top view of the collar part of other embodiment.

(First embodiment)
(overall structure)
The first embodiment will be specifically described with reference to FIGS. The first embodiment is a tile-type solar cell module directly laid on a roof. A mode of installation on the roof in the first embodiment will be described with reference to FIG.

As shown in FIG. 1, a tile-shaped solar cell module 1 (hereinafter also simply referred to as module 1) has a rectangular flat plate shape. The module 1 is provided with a rectangular flat base portion 11 and a cartridge portion 21. The base portion 11 is attached on the roof base plate 2. The cartridge part 21 is detachably fitted to the base part 11. A plurality of solar panels 22 are arranged in the cartridge portion 21.

The base portion 11 and the cartridge portion 21 are made of a resin such as PPE that has excellent mechanical properties and is not easily affected by temperature and humidity. The resin to be used can be appropriately selected based on weight, strength, fire resistance and weather resistance. In the present embodiment, since the base portion 11 and the cartridge portion 21 are made of resin, weight reduction can be promoted, and grounding work for each module 1 can be omitted.

In module 1, the light receiving surface of the solar panel 22 is the front surface or the top surface, and the surface opposite to the light receiving surface is the back surface or the bottom surface. The direction in which sunlight strikes perpendicularly to the light receiving surface of the solar panel 22 is defined as the exposure direction. The module 1 also serves as a roof building material, and is spread on the base plate 2 in an array.

The field board 2 is an inclined surface along the flow dimension of the roof, and is a base material for the roof. A waterproof roofing sheet 3 is laid on the base plate 2. A pier 4 is installed on the roofing sheet 3, and the roof tile 5 and the module 1 are fixed on the pier 4. The crosspiece 4 is a crosspiece that supports the roof tile 5 and the module 1. A plurality of piers 4 are arranged so as to be orthogonal to the flow dimension direction of the roof, that is, from the building to the eaves direction. The installation interval of the crosspieces 4 matches the size of the roof tile 5 and the module 1, and is determined by the eaves tile protruding dimension, the eaves roof climbing dimension, the roof tile climbing working dimension, and the like.

The tile 5 has a length, a width, a working dimension and the like determined by JIS. The tile 5 is provided with a projection (not shown) that hooks on the pier 4, and the tile 5 is fixed to the roof by hooking the projection on the pier 4. Alternatively, a hole for passing a screw or a screw may be provided in the tile 5, and the tile 5 may be firmly fixed to the roof using the screw or the screw. The tile-shaped module 1 according to the present embodiment has a structure in consideration of such fitting and fitting with the roof tile 5, and can be mixed with the roof tile 5 and spread on the roof in the same manner as the roof tile 5. Is possible.

(Base part)
Next, the base unit 11 will be described with reference to FIGS. 2 is a plan view of the base portion 11, FIG. 3 is an explanatory view of rainwater flowing on the back surface of the base portion 11, FIG. 4 is an enlarged plan view of the main part on the back surface side of the base portion 11, and FIG. FIG.

As shown in FIG. 2, the base portion 11 having a rectangular flat plate is provided with left and right side portions, a ridge side portion, and an eave side portion. The base portion 11 has openings X, Y, and Z adjacent to each other. The gap portions X, Y, and Z have a pentagonal shape as a whole, with the upper edge portion 17 gradually falling in the left-right direction. A drainage path 12 is provided on the front side of the base portion 11. The drainage path 12 is a path for flowing rainwater that has entered the gap between the base portion 11 and the cartridge portion 21 to the outside of the base portion 11.

The drainage channel 12 is provided with a height difference so that rainwater adhering thereto flows in a predetermined direction. In the drainage channel 12, a rainwater flow path is formed by the low wall portions that are raised to face each other. The width and depth of the channel in the drainage channel 12 can be selected as appropriate. A rectangular drainage hole 13 is formed at the end of the drainage path 12 so as to penetrate the base part 11. The rainwater that has fallen into the drain hole 13 is collected in a rain gutter attached to the roof, and allowed to flow outside the building.

In FIG. 2, the drainage path 12 is shown only in the vicinity of the upper side of the front side of the base part 11, but it is sufficient that rainwater flowing through the drainage path 12 finally flows into the drainage hole 13. The drainage channel 12 may be formed so as to extend over the entire front side of the base portion 11. Further, the position of the drain hole 13 is also shown in the right side portion of the base portion 11 in FIG. 2, but can be appropriately changed according to the configuration of the drain passage 12.

Among the rainwater that has entered the drain hole 13, there is one that adheres to the back side of the base portion 11 without falling from the drain hole 13. For example, when rainwater remaining in a film shape in the drainage hole 13 comes out of the drainage hole 13 due to vibration or the like, rainwater may adhere to the back side of the base portion 11 due to the surface tension of the water droplets. Rainwater adhering to the back side of the base part 11 may flow down to the base plate 2 side as it is along the back side of the base part 11 (see FIG. 3). A plurality of arc-shaped arrows in FIG. 3 indicate paths through which rainwater flows down to the base plate 2 side along the back side of the base portion 11.

Therefore, in the present embodiment, as shown in FIG. 4, draining ribs 14 are linearly arranged on the back side of the base portion 11 so as to block the flow of rainwater toward the base plate 2. The draining rib 14 is disposed in the vicinity of the drain hole 13, parallel to the longitudinal direction of the drain hole 13 and over the entire longitudinal direction of the drain hole 13. The draining rib 14 is formed to protrude downward. The rainwater blocked by the draining rib 14 returns to the drain hole 13 side, or falls toward the module 1 arranged at the lower stage instead of the field board 2 side.

As shown in FIG. 5, a protrusion 15 that protrudes in a direction opposite to the light receiving surface is provided on the side of the base 11 on the ridge side (right side of FIG. 5). The protrusion 15 is hooked on the crosspiece 4 when the module 1 is installed, and the module 1 is locked to the crosspiece 4. Further, a sag 16 is provided on the side of the base portion 11 on the eaves side (left side in FIG. 5). The sag 16 is locked in a state of being placed on the roof tile 5. Further, a fireproof member 18 is attached to the base portion 11. The refractory member 18 is disposed below the solar panel 22 of the cartridge portion 21. The refractory member 18 has a fire resistance and is made of a resin member obtained by processing a single flat plate into a wave shape.

(Cartridge part)
Next, the cartridge unit 21 will be described. As shown in FIG. 6, the cartridge portion 21 has a substantially rectangular shape, and includes a solar panel 22 disposed in the center and a frame 24 surrounding the solar panel 22.

Solar cell panel 22 is a plate in which solar cells 23 are arranged in series and parallel in two rows and seven columns horizontally so as to obtain a desired voltage and current. The solar battery cell 23 is a power generator that converts light energy into electric power by the photovoltaic effect, and uses a square type having a side of 5 inches. The solar panel 22 seals the solar battery cell 23 with a filler such as EVA, and further covers the light receiving surface with a protective plate such as a glass plate.

(Action and effect)
(1) In the first embodiment having the above-described configuration, the draining rib 14 is disposed in the vicinity of the drain hole 13. The draining ribs 14 block rainwater that flows along the back side of the base portion 11 from flowing toward the base plate 2. Therefore, in the first embodiment, rainwater can be prevented from dripping onto the field plate 2.

Moreover, in the first embodiment, the draining rib 14 is arranged in parallel with the longitudinal direction of the drainage hole 13 and over the entire longitudinal direction of the drainage hole 13. Therefore, the draining rib 14 can completely stop the rainwater overflowing from the drainage hole 13, and the rainwater does not flow to the field plate 2 side but flows back to the drainage hole 13 side, or to the lower module 1. Fall. In other words, there is no concern that rainwater will drip onto the field board 2.

According to such a first embodiment, even if strong rain continues for a long time and rainwater overflows from the drain hole 13 and a large amount of rainwater flows to the back side of the base portion 11, the rainwater falls on the field board 2. It can be surely prevented. Thereby, the factor of water leakage can be excluded reliably, and the solar cell module 1 with improved waterproofness can be provided.

(2) Moreover, in 1st Embodiment, the drainage path 12 of the rainwater is provided in the front side of the base part 11 of each module 1. FIG. Therefore, even if rainwater blocked by the draining rib 14 falls to the module 1 located below, the rainwater flows through the drainage path 12 of the dropped module 1 and flows outside the base portion 11. Further, even if rainwater flows to the back side of the base portion 11 in the lower module 1, the rainwater 14 of the lower module 1 is blocked from flowing toward the base plate 2 with respect to the rainwater. 1 as a whole can prevent rainwater from falling onto the field plate 2.

(3) Furthermore, in the first embodiment, since the upper edge portions 17 of the gap portions X, Y, and Z are gently lowered in the left-right direction, they adhere to the upper edge portions 17 of the gap portions X, Y, and Z. Rainwater flows downward along the inner peripheral portions of the gaps X, Y, and Z. Therefore, rainwater reliably falls to the module 1 located below along the left and right edges.

Since the gap portions X, Y, and Z can be greatly opened in the base portion 11, a considerable amount of rainwater in the rainwater that has entered the back surface of the base portion 11 is formed in the inner peripheral portion of the gap portions X, Y, and Z. Adhere to. Therefore, the amount of rainwater flowing from the drain hole 13 toward the base plate 2 is relatively reduced, and the draining rib 14 can easily stop rainwater. In 1st Embodiment which has such a space | gap part X, Y, Z, the fall of the rainwater to the field board 2 can be prevented more reliably, and it is possible to ensure the outstanding waterproofness.

(Second Embodiment)
(Constitution)
The second embodiment will be specifically described with reference to FIGS. FIG. 7 is a perspective view of an essential part of the second embodiment, and FIG. 8 is a perspective view of a collar part of the second embodiment. As in the first embodiment, the second embodiment is a tile-type solar cell module, and the basic configuration is the same. For this reason, the same components are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 7, in the second embodiment, in the ridge side fitting portion between the base portion 11 and the cartridge portion 21, a plurality of flange portions 30 that press the cartridge portion 21 from above are provided on the base portion 11. It is a thing. The flange portion 30 is a member for fitting the cartridge portion 21 to the base portion 11 so that the cartridge portion 21 can be inserted and removed, and for pressing down the negative pressure pulling force applied to the cartridge portion 21 from above.

When such a collar part 30 is formed integrally with the base part 11, the base part 11 is made of resin, and therefore a hole is inevitably provided in a portion facing the collar part 30. Since the hole at this time is provided close to the fitting portion on the ridge side of the base portion 11 and the cartridge portion 21, there is a high possibility that rainwater will enter the gap between the base portion 11 and the cartridge portion 21. Therefore, in the second embodiment, the flange portion 30 is a separate member from the base portion 11 so that the hole corresponding to the flange portion 30 is not formed in the fitting portion on the ridge side of the base portion 11 and the cartridge portion 21. The flange portion 30 is detachably attached to the base portion 11.

The configuration of the collar unit 30 will be described in detail with reference to FIG. As shown in FIG. 8, the eaves portion 30 is provided with a plate-like eaves 30 a extending toward the eaves side. In addition, two

insertion claws

31 a and 31 b are formed in the collar portion 30. A wide central claw 32 is provided so as to be sandwiched between the two

insertion claws

31a and 31b. The two

insertion claws

31a and 31b and the central claw 32 are provided so as to extend in a direction opposite to the direction in which the flange 30a extends. A hooking claw 32 a is formed in the middle of the central claw 32.

The insertion hooks 31 a and 31 b and the central claw 32 are inserted into the fitting part on the ridge side with the cartridge part 21 in the base part 11, so that the flange part 30 is attached to the base part 11. At this time, the hooking claw 32a is hooked in a predetermined hole portion on the base part 11 side to prevent the collar part 30 from falling off.

8B, the two

insertion claws

31a and 31b are provided in an asymmetric shape so as to prevent reverse insertion of the collar portion 30 with respect to the base portion 11. Specifically, the two

insertion claws

31a and 31b are configured to have different width dimensions on the left and right. Further, as shown in FIG. 8C, the rib portion 30 is formed with a waterproof rib 33 at a position corresponding to the back side of the rod 30a in order to prevent rainwater from entering the inside of the flange portion 30. Yes.

(Action and effect)
(1) In the second embodiment having the above-described configuration, the flange portion 30 is provided detachably with respect to the base portion 11, so that the flange portion 30 is integrally formed with the base portion 11. Unlikely, the hole by the collar part 30 is not formed in the side part of the base part 11. Therefore, it is possible to prevent rainwater from entering the back side of the base portion 11. Moreover, since the waterproof rib 33 is provided in the back side of the collar 30a of the collar part 30, the penetration | invasion of rain water to the inner side of the collar part 30 can also be prevented.

Thereby, the solar cell module 1 with improved waterproofness can be provided. In addition, in the second embodiment, since the collar portion 30 presses the cartridge portion 21 from above, the force in the pulling direction against the cartridge portion 21 can be pressed, and the base portion 11 and the cartridge portion 21 are firmly fitted. Can be made.

(2) Moreover, in the collar part 30 of 2nd Embodiment, since the hook nail | claw 32a was provided, the drop-off | omission of the collar part 30 from the base part 11 can be prevented. Furthermore, since the

insertion claws

31a and 31b are provided in an asymmetric shape, the flange portion 30 is not inserted upside down with respect to the base portion 11, and the efficiency of the assembly work can be improved.

(Third embodiment)
(Constitution)
The third embodiment will be specifically described with reference to FIG. FIG. 9 is a perspective view of an essential part of the third embodiment. Similar to the second embodiment, the third embodiment is a tile-type solar cell module having a collar, and the basic configuration is the same. For this reason, the same components are denoted by the same reference numerals, and description thereof is omitted. As shown in FIG. 9, in the third embodiment, a flange portion 34 that presses the cartridge portion 21 from above is provided integrally over the entire side portion of the base portion 11.

(Action and effect)
In the third embodiment having the above-described configuration, since the flange portion 34 is integrally provided over the entire side portion of the base portion 11, unlike the case where a plurality of flange portions 30 are provided, the interval between the flange portions 30. The gap can be eliminated. Therefore, rainwater does not enter the base portion 11 from the gap between the flange portions 30. In particular, even if wind and rain are blown from the front, the collar portion 34 can exhibit excellent waterproof properties.

(Other embodiments)
In the present specification, a plurality of embodiments according to the present invention have been described. However, these embodiments are presented as examples and are not intended to limit the scope of the invention. Specifically, various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

For example, the shape, dimensions, arrangement location, and the like of the draining rib 14 can be changed as appropriate, and the draining rib 14 shown in the first embodiment is provided linearly, but surrounds two sides of the rectangular drainage hole 13. Thus, it may be L-shaped. The drain hole 13 may be circular. At this time, the draining rib 14 may be provided in a curve so as to surround the drain hole 13. The drain hole 13 may be constituted by a notch formed in the base portion 11.

Further, an inclined surface may be provided between the drain hole 13 and the draining rib 14 so that rainwater flows in a direction different from the direction toward the base plate 2. More specifically, an inclined surface may be provided on the back surface of the base portion 11 such that the vicinity of the drainage hole 13 is lower than the vicinity of the draining rib 14.

According to this embodiment, since the vicinity of the drain hole 13 is lower than the vicinity of the draining rib 14, rainwater hardly flows from the drain hole 13 side toward the draining rib 14. Even if rainwater flows from the drainage hole 13 side to the draining rib 14 side, the rainwater blocked by the draining rib 14 flows back to the drainage hole 13 side along the inclined surface. The rainwater can be prevented from falling more reliably.

In the third embodiment, the flange portion 34 is integrally provided over the entire side portion of the base portion 11, but it is difficult and costly to manufacture a resin member in a long length with high accuracy. Therefore, the collar part 35 shown in FIG. 10 is composed of three parts, and the end parts of each part are wrapped and joined. The code | symbol 36 of FIG. 10 has shown the lap | wrap part.

According to such an embodiment, it is possible to reduce the risk of intrusion of rainwater from the joint even if the collar 35 is configured from a plurality of parts by forming the collar 35 by wrapping and joining three parts. Can do. Moreover, since the collar part 35 is divided into three parts, manufacture becomes easy compared with the case where it manufactures from a single part, and it is advantageous in cost.

DESCRIPTION OF SYMBOLS 1 ... Module 2 ... Base plate 3 ... Roofing sheet 4 ... Pier 5 ... Roof tile 11 ... Base part 12 ... Drain hole 13 ... Drain groove 14 ... Draining rib 15 ... Protrusion part 16 ... Dripping 17 ... Upper edge part 18 of a cavity part ... Refractory member 21 ... cartridge part 22 ... solar panel 23 ...

solar cells

30, 34, 35 ... collar 30a ... collar 31a, 321b ... insertion claw 32 ... central claw 32a ... hook claw 33 ... waterproof rib 36 ... wrap part X , Y, Z ... Gap

Claims

A base that is mounted on the roof top plate,
A cartridge part attached to the base part and provided with a solar panel;
A drainage path that is provided on the front side of the base portion and flows rainwater that has entered the gap between the base portion and the cartridge portion to the outside of the base portion;
A draining rib that is provided on the back side of the base part and blocks the flow of rainwater that travels through the back side of the base part toward the field plate,
Solar cell module with
A drainage hole penetrating the base part is formed at an end of the drainage path,
The solar cell module according to claim 1, wherein the draining rib is disposed in proximity to the drain hole.
A drainage hole penetrating the base part is formed at an end of the drainage path,
The solar cell module according to claim 1 or 2, wherein an inclined surface is provided between the drain hole and the draining rib so that rainwater flows in a direction different from a direction toward the base plate.
A plurality of the solar cell modules are arranged in the flow direction of the roof,
The base portion is provided with a gap that penetrates the base portion,
4. The gap is formed according to any one of claims 1 to 3, wherein rainwater flowing along an inner periphery of the gap is formed to flow down toward a surface of a base portion of a solar cell module located below. Solar cell module.
A base that is mounted on the roof top plate,
A cartridge part attached to the base part and provided with a solar panel;
A hook part that is detachable from the base part and presses the cartridge part from above;
Solar cell module with
The collar part is provided with an insertion part that can be inserted into the base part,
The solar cell module according to claim 5, wherein a hooking claw for preventing the collar portion from falling off from the base portion is formed in the insertion portion.
The collar part is provided with an insertion part that can be inserted into the base part,
The solar cell module according to claim 5 or 6, wherein the insertion portion has an asymmetric shape so as to prevent reverse insertion of the flange portion with respect to the base portion.
The solar cell module according to any one of claims 5 to 7, wherein a waterproof rib for preventing rainwater from entering the inside of the collar is formed on the collar.
The base part is formed with a side part on the eave side,
The solar cell module according to any one of claims 5 to 8, wherein the flange portion is provided integrally over the entire side portion of the base portion.
The solar cell module according to any one of claims 5 to 9, wherein the flange part wraps the ends of adjacent flange parts.