Solar power generation equipment

Abstract

The present invention provides a solar power generation system that can prevent the mounting structure from being blown away even when lift forces from strong winds are applied to the solar panels. [Solution] The photovoltaic power generation device comprises a solar panel and a mounting frame that supports the solar panel and has a fixing part for fixing the solar panel. When a first lift force, which is greater than a predetermined lift force, is applied to the solar panel, the fixing part detaches at least a portion of the solar panel from the mounting frame.

Description

Technical Field

[0001] This disclosure relates to a solar power generation device.

Background Art

[0002] Solar power generation devices including a solar panel and a pedestal for fixing the solar panel have been variously proposed. For example, Patent Document 1 discloses a solar power generation device installed on a roof. In such a solar power generation device, the pedestal and the roof are adhered to each other by an adhesive or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a lifting force due to strong wind is applied to the solar panel, the pedestal may be blown off the roof. At this time, a part of the roof may be peeled off together with the bonding material and damaged. Such a problem is common to solar power generation devices arranged on any structure other than the roof.

Means for Solving the Problems

[0005] This disclosure can be realized in the following forms.

[0006] (1) According to one aspect of this disclosure, a solar power generation device is provided. This solar power generation device includes a solar panel and a fixing portion for fixing the solar panel, and a pedestal for supporting the solar panel. When a first lifting force, which is a lifting force greater than a predetermined lifting force on the solar panel, is applied, at least a part of the solar panel is dissociated from the pedestal. In this type of photovoltaic power generation system, when a first lift force greater than a predetermined lift force is applied to the solar panel, the fixed part detaches at least a portion of the solar panel from the mounting frame, thereby suppressing the application of the first lift force to the mounting frame as well. This reduces damage to the installation site where the mounting frame is installed. (2) In the photovoltaic power generation device of the above form, the photovoltaic panel has grid lines which are the paths for the generated electricity, and the fixing part may further have an electrically dissociable adhesive layer which is conductive, clamps the end of the photovoltaic panel, adheres the photovoltaic panel and the mounting frame, and whose adhesive strength decreases when electricity is passed through it, and a protruding part which protrudes downward and is configured to come into contact with the grid lines when the first lift force is applied to the photovoltaic panel. In this type of photovoltaic power generation device, the fixing part has an electrodissociable adhesive layer that adheres the solar panel to the mounting frame and whose adhesive strength decreases when electricity is applied, and a protruding part that contacts the grid lines when a first lift force is applied to the solar panel. Therefore, when a first lift force is applied to the solar panel, the electricity flowing through the grid lines flows to the electrodissociable adhesive layer through the protruding part, thereby reducing the adhesive strength of the electrodissociable adhesive layer. As a result, the solar panel to which the first lift force is applied can be separated from the mounting frame. (3) In the photovoltaic power generation device of the above form, the fixing portion may further have a blade portion that grips the end of the photovoltaic panel and protrudes downward, and which breaks the photovoltaic panel when the first lift force is applied to the photovoltaic panel. In this type of photovoltaic power generation device, the fixing part has a blade that breaks the photovoltaic panel when a first lift force is applied to it. As a result, the wind blowing from below the photovoltaic panel can pass through the broken part of the photovoltaic panel. In other words, the lift force applied to the photovoltaic panel is reduced, and therefore the lift force applied to the mounting structure can be reduced. (4) The photovoltaic power generation device of the above form may further include a sensor attached to the solar panel that emits a signal when the first lift force is applied to the solar panel, and a breaking part that breaks the solar panel when it receives the signal from the sensor. This type of solar power generation device includes a sensor attached to the solar panel that emits a signal when a first lift force is applied to the solar panel, and a breaking section that breaks the solar panel when it receives a signal from the sensor. As a result, the solar panel breaks when the first lift force is applied. This allows wind blowing from below the solar panel to pass through the broken section of the solar panel. In other words, the lift force applied to the solar panel is reduced, and therefore the lift force applied to the mounting structure can be reduced. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of a photovoltaic power generation system in one form of this disclosure. [Figure 2] This is a diagram illustrating a solar power generation system according to the first embodiment. [Figure 3] This is a diagram illustrating a solar power generation system according to a second embodiment. [Figure 4] This is a diagram illustrating a solar power generation system according to a third embodiment. [Modes for carrying out the invention]

[0008] A. First Embodiment: Figure 1 is a perspective view of a photovoltaic power generation system 100 in one embodiment of the present disclosure. In this embodiment, the photovoltaic power generation system 100 is installed on the roof R of a building and generates electricity using solar energy. The photovoltaic power generation system 100 comprises a solar panel 110 and a mounting frame 120.

[0009] In the drawings, the X, Y, and Z axes are mutually orthogonal axes. The X, Y, and Z axes in each drawing in this disclosure are used for illustrative purposes only. The +Z direction is also referred to as the "upward direction," and the -Z direction is also referred to as the "downward direction."

[0010] <Configuration of Solar Panel 110> The solar panel 110 is composed of multiple solar cells combined together. The solar panel 110 has a rectangular plate-like external shape. The solar panel 110 is provided with grid lines 111 arranged in a grid pattern. The grid lines 111 are the paths for the electricity generated by the solar panel 110.

[0011] <Configuration of frame 120> The mounting frame 120 supports the solar panels 110. In this embodiment, the mounting frame 120 is fixed to the roof R, which is the installation location, using adhesive. A pair of mounting frames 120 are provided to support each end of the solar panels 110 in the X-axis direction. The mounting frame 120 has an L-shaped external form when viewed in the Y-axis direction. The mounting frame 120 is made of any material such as metal or resin. In this embodiment, the mounting frame 120 is made of a conductive metal. Such a metal is, for example, aluminum.

[0012] Figure 2 is a diagram illustrating the photovoltaic power generation system 100 of the first embodiment. Figure 2 shows a cross-section along the line II-II in Figure 1. It can also be said that Figure 2 shows a cross-section of the photovoltaic power generation system 100 cut by a plane parallel to the X and Z axes. In Figure 2, the end on the -X side of the photovoltaic power generation system 100 is shown, and other parts are omitted. As shown on the left side of Figure 2, the mounting frame 120 has a support part 121 and a fixing part 122. The support part 121 is in contact with the roof R in the -Z direction and supports the fixing part 122 in the +Z direction. The support part 121 functions as the base of the photovoltaic power generation system 100.

[0013] The fixing part 122 fixes the solar panel 110. Specifically, the fixing part 122 clamps the -X end of the solar panel 110 in the Z direction. Furthermore, in this disclosure, when a first lift force, which is greater than a predetermined lift force, is applied to the solar panel 110, the fixing part 122 detaches at least a portion of the solar panel 110 from the mounting frame 120. Details will be described later. The fixing part 122 has a fixing body part 123, an electrodissociable adhesive layer 124, and a protruding part 125. The fixing body part 123 has a U-shape in a cross-section parallel to the X and Z axes. The end of the solar panel 110 is housed in the fixing body part 123.

[0014] The electrodissociative adhesive layer 124 is positioned to fill the space between the fixed body portion 123 and the edge of the solar panel 110. The electrodissociative adhesive layer 124 adheres the fixed body portion 123 to the edge of the solar panel 110. The electrodissociative adhesive layer 124 is made of an adhesive whose adhesive strength decreases when electricity is applied. Such adhesives have the property of having a change in chemical structure and reduced adhesive strength when electricity is applied. Such adhesives include, for example, compounds having catechol groups. When a voltage is applied, the catechol group undergoes an oxidation reaction and changes structurally to a quinone group. This structural change reduces the adhesive strength.

[0015] The protrusion 125 is provided at the +X end of the fixed portion 122 and protrudes toward the solar panel 110 (in the -Z direction). The protrusion 125 is configured to pierce the solar panel 110 and come into contact with the grid line 111 when a first lift force is applied to the solar panel 110.

[0016] <Explanation of the function of the fixing part 122> The right side of FIG. 2 shows a state in which a first lift force is applied to the solar panel 110. The "lift force" in the present disclosure is a force that the wind entering below the solar panel 110 lifts the solar panel 110 upward. The "first lift force" in the present disclosure is a lift force sufficient to lift the gantry 120 together with the solar panel 110 and peel the adhesion between the gantry 120 and the installation location. The first lift force can be obtained experimentally according to the size of the solar panel 110. When the first lift force is applied to the solar panel 110, the gantry 120 is blown off together with a part of the adhesive from the installation location. At this time, if a waterproof sheet is installed at the installation location, the waterproof sheet may be damaged. As a result, not only does the solar power generation device 100 come off the roof R, but there is also a risk of water leakage in the building. Also, even if the gantry 120 is not blown off, an upward force is also applied to the installation location, and cracks may occur in the installation location, resulting in damage to the waterproof sheet.

[0017] On the other hand, since the fixing portion 122 has the electrically dissociable adhesive layer 124 and the protruding portion 125 as in the present embodiment, when a first lift force is applied to the solar panel 110, the solar panel 110 dissociates from the gantry 120. Specifically, as shown on the right side of FIG. 2, when a first lift force is applied to the solar panel 110, the solar panel 110 deflects into a convex shape on the upper side. At this time, the tip of the protruding portion 125 pierces the solar panel 110 and contacts the grid line 111. Since the electricity generated by the solar panel 110 passes through the grid line 111, the protruding portion 125 is energized. The electricity flows from the protruding portion 125 to the fixed main body portion 123 and the electrically dissociable adhesive layer 124. The electrically dissociable adhesive layer 124 reduces the adhesive force when energized. As a result, the solar panel 110 dissociates from the fixed main body portion 123. Due to the dissociation of the solar panel 110, the region AR1 below the solar panel 110 and the region AR2 above the solar panel 110 communicate with each other, and a wind path is formed. Therefore, even when the first lift force is applied to the solar panel 110, it is possible to prevent the gantry 120 from being blown off from the installation location.

[0018] According to the photovoltaic power generation device 100 of the first embodiment described above, when the first lift force is applied, the fixing portion 122 dissociates the solar panel 110 from the pedestal 120, so that it is possible to prevent the pedestal 120 from being blown away together with the solar panel 110 by the first lift force. Thereby, it is possible to prevent the waterproof sheet provided at the installation location of the pedestal 120 from being damaged, and to prevent water leakage that may occur in the building. Further, when the first lift force is applied to the solar panel 110, since the solar panel 110 containing a resin material dissociates and the pedestal 120 containing a metal material remains, compared with the case where both the solar panel 110 and the pedestal 120 are blown away, it is possible to reduce the damage that the blown-away object may cause to surrounding structures and the like.

[0019] Further, according to the photovoltaic power generation device 100 of the first embodiment, the fixing portion 122 includes an electrically dissociable adhesive layer 124 that adheres the solar panel 110 and the pedestal 120 and whose adhesive force decreases due to energization, and a protrusion 125 that contacts the grid line 111 when the first lift force is applied to the solar panel 110. Therefore, when the first lift force is applied to the solar panel 110, the electricity flowing through the grid line 111 flows through the protrusion 125 to the electrically dissociable adhesive layer 124, thereby reducing the adhesive force of the electrically dissociable adhesive layer 124. Thereby, the solar panel 110 to which the first lift force is applied dissociates from the pedestal 120, and it is possible to prevent the pedestal 120 from being blown away together with the solar panel 110 by the first lift force. Further, since the solar panel 110 is dissociated by a configuration in which the protrusion 125 and the electrically dissociable adhesive layer 124 are energized when the first lift force is applied to the solar panel 110, the dissociation of the solar panel 110 can be realized with a relatively simple configuration.

[0020] B. Second Embodiment: Figure 3 is a diagram illustrating the photovoltaic power generation device 100b of the second embodiment. The left side of Figure 3 shows the state in which no first lift force is applied to the solar panel 110, and the right side of Figure 3 shows the state in which the first lift force is applied to the solar panel 110. The photovoltaic power generation device 100b of the second embodiment differs from the photovoltaic power generation device 100 of the first embodiment in that the solar panel 110 is bonded with any other adhesive instead of the electrodissociable adhesive layer 124, and the fixing part 122b has a blade part 126 instead of a protruding part 125. The configuration of the photovoltaic power generation device 100b of the second embodiment that is not described below is the same as the configuration of the photovoltaic power generation device 100 of the first embodiment.

[0021] As shown on the left side of Figure 3, the adhesive layer 130 bonds the fixed body portion 123 to the end of the solar panel 110. The adhesive layer 130 is made of any adhesive. The blade portion 126 protrudes downward. The blade portion 126 is made of any sharp structure. As shown on the right side of Figure 3, when a first lift force is applied to the solar panel 110, the blade portion 126 causes the solar panel 110 to break. Due to the breakage of the solar panel 110, a portion of the solar panel 110 separates from the mounting frame 120, and regions AR1 and AR2 become connected.

[0022] According to the second embodiment of the photovoltaic power generation device 100b described above, the fixing part 122b has a blade portion 126 that breaks the photovoltaic panel 110 when a first lift force is applied to it, so the photovoltaic panel 110 breaks when the first lift force is applied. As a result, wind blowing from below the photovoltaic panel 110 can pass through the broken portion of the photovoltaic panel 110. Therefore, the lift force applied to the photovoltaic panel 110 is reduced, and the lift force applied to the mounting frame 120 can also be reduced.

[0023] C. Third Embodiment: Figure 4 is a diagram illustrating the photovoltaic power generation device 100c of the third embodiment. The left side of Figure 4 shows the state in which no first lift force is applied to the solar panel 110, while the center and right sides of Figure 4 show the state in which the first lift force is applied to the solar panel 110. The photovoltaic power generation device 100c of the third embodiment differs from the photovoltaic power generation device 100 of the first embodiment in that the solar panel 110 is bonded with any other adhesive instead of the electrodissociable adhesive layer 124, the fixing part 122c does not have a protruding part 125, and the sensor 127 and the break part 128 are attached to the solar panel 110. The configurations of the photovoltaic power generation device 100c of the third embodiment that are not described below are the same as those of the photovoltaic power generation device 100 of the first embodiment and the photovoltaic power generation device 100b of the second embodiment.

[0024] As shown on the left side of Figure 4, the sensor 127 is mounted on the underside of the solar panel 110. The sensor 127 detects deformation of the solar panel 110. Specifically, the sensor 127 emits a signal when a first lift force is applied to the solar panel 110. The sensor 127 has a first part 127a and a second part 127b. As shown in the center of Figure 4, when a first lift force is applied to the solar panel 110, the sensor 127 deforms and the relative positions of the first part 127a and the second part 127b shift. This causes a circuit provided inside the sensor 127 to close, thereby emitting a signal. The signal is transmitted to the broken part 128.

[0025] The breaking section 128 breaks the solar panel 110 when it receives a signal from the sensor 127. The breaking section 128 is composed of, for example, a device that delivers an impact to the solar panel 110 or a device that cuts the solar panel 110. In this embodiment, the breaking section 128 is a device that delivers an impact to the solar panel 110. As shown on the right side of Figure 4, the breaking section 128, upon receiving a signal, breaks the solar panel 110. Due to the breaking of the solar panel 110, a part of the solar panel 110 separates from the mounting frame 120, and regions AR1 and AR2 become connected.

[0026] The solar power generation device 100c of the third embodiment described above includes a sensor 127 attached to the solar panel 110 that emits a signal when a first lift force is applied to the solar panel 110, and a breaking part 128 that breaks the solar panel 110 when it receives a signal from the sensor 127. As a result, the solar panel 110 breaks when the first lift force is applied. This allows wind blowing from below the solar panel 110 to pass through the broken part of the solar panel 110. Therefore, the lift force applied to the solar panel 110 is reduced, and the lift force applied to the mounting frame 120 can also be reduced.

[0027] D. Other embodiments: (D1) In each of the above embodiments, the photovoltaic power generation devices 100, 100b, and 100c were installed on the roof R of a building, but the disclosure is not limited thereto. The photovoltaic power generation devices 100, 100b, and 100c may be installed in any location.

[0028] (D2) In each of the above embodiments, the frame 120 and the installation location were bonded together with an adhesive, but the disclosure is not limited thereto. The frame 120 and the installation location may be fixed to each other by any member such as bolts or double-sided tape.

[0029] (D3) In each of the above embodiments, a waterproof sheet was installed on the roof R, but the disclosure is not limited thereto. Any sheet may be installed on the roof R, or any coating agent may be applied to it.

[0030] (D4) In the first embodiment described above, the frame 120 was made of aluminum, but the disclosure is not limited thereto. The frame 120 may be made of any conductive material. Furthermore, the entire frame 120 does not necessarily have to be conductive; the electrical path from the protrusion 125 to the electrodissociable adhesive layer 124 in the frame 120 may be conductive.

[0031] (D5) In the third embodiment described above, the sensor 127 had a first portion 127a and a second portion 127b, but the disclosure is not limited thereto. The sensor 127 may be configured in any way that it emits a signal when a first lift force is applied to the solar panel 110.

[0032] This disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from its spirit. For example, the technical features in the embodiments corresponding to the technical features in each form described in the summary of the invention can be replaced or combined as appropriate in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate. [Explanation of Symbols]

[0033] 100, 100b, 100c... Solar power generation device, 110... Solar panel, 111... Grid line, 120... Mounting frame, 121... Support part, 122, 122b, 122c... Fixing part, 123... Fixing main body part, 124... Electrodissociable adhesive layer, 125... Protrusion, 126... Blade part, 127... Sensor, 127a... First part, 127b... Second part, 128... Breaking part, 130... Adhesive layer, AR1, AR2... Area, R... Roof

Claims

1. A solar power generation device, Solar panels and A mounting frame having a fixing portion for fixing the solar panel and supporting the solar panel, Equipped with, When a first lift force, which is greater than a predetermined lift force, is applied to the solar panel, the fixing part detaches at least a portion of the solar panel from the mounting frame. Solar power generation equipment.

2. A solar power generation device according to claim 1, The aforementioned solar panel has grid lines which are the paths for the generated electricity, The aforementioned fixing part is It is conductive, The end of the aforementioned solar panel is clamped, The solar panel and the mounting frame are bonded together, and an electrodissociable adhesive layer whose adhesive strength decreases when electricity is applied is used to bond them together. The solar panel further comprises a projection that protrudes downward and is configured to contact the grid line when the first lift force is applied to the solar panel. Solar power generation equipment.

3. A solar power generation device according to claim 1, The aforementioned fixing part is The end of the aforementioned solar panel is clamped, A blade portion that protrudes downward, and further comprises a blade portion that, when the first lift force is applied to the solar panel, breaks the solar panel. Solar power generation equipment.

4. A solar power generation device according to claim 1, A sensor attached to the solar panel, which emits a signal when a first lift force is applied to the solar panel, The system further includes a breaking section that breaks the solar panel upon receiving the signal from the sensor. Solar power generation equipment.

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