JP2013133597A - Support device for solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device for a solar cell module, which has a long service life.SOLUTION: A support device 1 for a solar cell module, which supports a plate-like solar cell module 2 at an installation site 3, includes a holding member 10 which holds the peripheral part of the solar cell module 2 from both sides, and a supporting member 20 which supports the holding member 10 at the installation site 3. The holding member 10 and the supporting member 20 are formed of pure titanium or titanium alloy.

Description

  The present invention relates to a solar cell module support device that supports a solar cell module at an installation location.

  In recent years, the potential for solar cells to become a powerful tool for solving global energy problems has steadily increased, and large-scale solar power plants are actually being built around the world. And in the future, solar cells are expected to cover some of the world's electricity demand.

  There are several types of solar cell modules (solar cell panels) used in this solar cell, and representative examples include single crystal silicon type, polycrystalline silicon type, and thin film silicon type. In addition, GIGS solar cell modules that exhibit very high conversion efficiency have been proposed.

  These solar cell modules are known to be expensive, but as research and development progresses, the life of the elements involved in power generation of solar cells has become longer, more than 40 years, and more than 100 years depending on the thing. It is expected to be.

  As the life of solar cell modules continues to increase, the expected cause of the life of solar cell systems in the future is not due to the fact that the solar cell modules themselves no longer generate power (exceeded the life), but outdoors. It is expected that there will be more cases of deterioration of the support device due to installation and exposure to rain and wind. In that case, although the solar cell module can be used, a situation occurs in which the support device needs to be replaced. As a result, replacement of the support device causes a cost increase.

  Compared to the solar cell module as described above, a relatively short-lived but inexpensive module such as a dye-sensitized solar cell and an organic thin-film solar cell has also been proposed. However, when these solar cell modules are used, Even if it exists, it is necessary to replace | exchange a support apparatus regularly, The cost increase resulting from replacement | exchange of a support apparatus cannot be avoided.

  In recent years, the need for energy and resource saving has been strongly advocated, and support devices that can reduce the number of replacements by being able to withstand long-term use as much as possible are required. Support devices have been proposed.

For example, Patent Document 1 discloses a support device (frame frame) made of aluminum, and Patent Document 2 discloses a support device (reinforcement plate) made of a steel plate, a plated steel plate, and a galvalume steel plate.
Among these materials, aluminum and galvalume steel plates are used as supporting devices for solar cell modules because they are superior in corrosion resistance and weather resistance and relatively inexpensive compared to standard iron materials (SS400, etc.). Yes.

JP-A-10-308522 Japanese Unexamined Patent Publication No. 7-1331048

  However, although the support device composed of the materials disclosed in Patent Documents 1 and 2 (aluminum and galvalume steel plate) is excellent in corrosion resistance and weather resistance, deterioration such as corrosion will occur in 10 to 20 years. Will occur. If the lifetime of the solar cell module is around 20 years, there was no particular problem, but since the lifetime of the solar cell module is expected to further increase in the future, the corrosion resistance and weather resistance of the support device are improved, and further It is necessary to extend the service life (prolong the service life).

  Then, this invention makes it a subject to provide the support apparatus for solar cell modules with a long lifetime.

  In order to solve the above problems, a solar cell module support device according to the present invention is a solar cell module support device that supports a solar cell module having a plate shape at an installation location, and a peripheral portion of the solar cell module. A holding member that holds the holding member from both sides, and a supporting member that supports the holding member at the installation location, and the holding member and the supporting member are made of pure titanium or a titanium alloy. And

According to this solar cell module support device, since the holding member and the support member of the solar cell module support device are made of pure titanium or a titanium alloy, the corrosion resistance and weather resistance of the solar cell module support device are improved. be able to.
Moreover, since pure titanium or a titanium alloy is excellent also in mechanical strength, it becomes possible to comprise each member of the support apparatus for solar cell modules thinly and thinly.
Furthermore, since pure titanium or a titanium alloy is about 60% in weight compared with an iron-type material, the solar cell module support apparatus can be reduced in weight.
In addition, the thermal expansion coefficient of pure titanium or titanium alloy is close to the thermal expansion coefficient of the glass material used for the substrate of the module, so even if thermal expansion or contraction due to the presence or absence of sunlight reception occurs, the module ( An extremely large stress is not generated between the glass material) and the holding member.

  Further, in the solar cell module support device according to the present invention, the holding member includes a frame body on which the solar cell module is disposed along a frame, a back surface of the solar cell module, and one surface of the frame body. And a sandwiching body that is installed on the other surface of the frame body and sandwiches the peripheral portion of the solar cell module with the plate body, and the sandwiching body and the frame The body and the plate body each have a first communication hole that communicates in the stacking direction in a state where they are overlapped with each other. By communicating with the first communication hole, the sandwiching body, the frame body, It is preferable to include a first fastener that detachably fastens the plate body.

  According to this solar cell module support device, in a state where the sandwiching body, the frame body, and the plate body are overlapped, the first fastener is communicated and fastened to the first communication hole communicating in the stacking direction. The solar cell module arranged along the frame of the frame body can be sandwiched between the sandwiching body and the plate body. And by releasing | fastening the 1st fastener, a clamping body, a frame, and a board | plate body can be spaced apart in the lamination direction, and a solar cell module can be easily removed from a frame.

  Further, in the solar cell module support device according to the present invention, the sandwiching body, the frame body, and the plate body each have a second communication hole that communicates with each other in the stacking direction in a state where they are overlapped. The support member has a third communication hole, is provided between the plate body and the support member, and has a fourth communication hole at a position corresponding to the second communication hole, A connecting member having a fifth communication hole at a position corresponding to the third communication hole, and communicating with the second communication hole and the fourth communication hole, so that the sandwiching body, the frame body, the plate body, and A second fastener for detachably fastening the connection member, and a third fastener for detachably fastening the connection member and the support member by communicating with the third connection hole and the fifth communication hole. And preferably.

  According to this solar cell module support device, in a state where the holding member and the connecting member are overlapped, the second fastener is communicated and fastened to the second communicating hole of the holding member and the fourth communicating hole of the connecting member. With the connecting member and the support member overlapped, the holding member and the support member are connected to each other by fastening the third fastener to the fifth communication hole of the connection member and the third communication hole of the support member. Can be connected to each other. Then, by releasing the fastening of the second fastener and the third fastener, the sandwiching body, the frame body, and the plate body can be separated in the stacking direction, and the solar cell module can be easily removed from the frame body. The holding member can be easily removed from the support member.

In the support device for a solar cell module according to the present invention, N and C as inevitable impurities of the pure titanium or titanium alloy are N: 0.07% by mass or less and C: 0.08% by mass or less, respectively. It is preferable that
The titanium alloy is composed of 0.01% by mass or more and 33% in total of one or more of Si, Pd, Ni, Ru, Cr, Al, V, Mo, Zr, Sn, Ta, Nb, and Fe. Si: 1.4 mass% or less, Pd: 0.6 mass% or less, Ni: 1.1 mass% or less, Ru: 0.04 mass% or less, Cr: 9.0 mass% Hereinafter, Al: 13.0 mass% or less, V: 32 mass% or less, Mo: 13.0 mass% or less, Zr: 11.0 mass% or less, Sn: 7.0 mass% or less, Ta: 10.0 It is preferable that they are mass% or less, Nb: 6.0 mass% or less, and Fe: 4.0 mass% or less.

  According to this solar cell module support device, the inevitable impurities are regulated to a predetermined value or less, and the corrosion resistance, weather resistance, or mechanical strength is further improved by containing a predetermined component at a predetermined value or less. Can do.

According to the support device for a solar cell module according to the present invention, by using pure titanium or a titanium alloy, corrosion resistance and weather resistance can be improved, so that it can be used for a long time regardless of the installation location. (Longer service life)
In addition, since each member of the support device for the solar cell module can be configured to be thin and thin and can be reduced in weight, for example, even if the installation location is a place with a low load limit such as a roof of a residence, the solar cell The module support device can be installed without any problem.
Furthermore, even if thermal expansion or contraction due to the presence or absence of sunlight reception occurs, an extremely large stress is not generated between the module (glass material) and the holding member, and therefore based on the stress. The module and the holding member can be prevented from being damaged and destroyed, and the module and the holding member can be used for a long time.

  Moreover, according to the support apparatus for solar cell modules which concerns on this invention, the solar cell arrange | positioned along the inside of a frame of a frame body by fastening a 1st fastener to a 1st communicating hole, or releasing a fastening. The module can be easily held or released. Therefore, even if it is necessary to replace the solar cell module after the end of its life, remove the used solar cell module from the holding member and attach the solar cell module before use to the holding member. This eliminates the need to replace the solar cell module support device itself.

  In addition, according to the solar cell module support device of the present invention, the second fastener is fastened or released from the second communication hole and the fourth communication hole, and the third connection hole and the fifth communication hole are connected. By fastening the third fastener or releasing the fastening, the support member and the holding member can be easily connected and disconnected. Therefore, even if the holding member or solar cell module that is susceptible to external damage or the like is damaged, the used holding member or solar cell module is removed from the support member, and the holding member or solar cell before use is removed. The module can be attached to the support member, and there is no need to replace the support member.

  Further, according to the support device for a solar cell module according to the present invention, the inevitable impurities are regulated to a predetermined value or less, and the predetermined component is contained at a predetermined value or less, thereby providing corrosion resistance, weather resistance, or mechanical strength. Can be further improved, and the service life can be prolonged.

It is the schematic diagram which showed the structure of the support apparatus for solar cell modules which concerns on embodiment of this invention. It is a disassembled perspective view of the holding member of the support apparatus for solar cell modules which concerns on embodiment of this invention. It is sectional drawing of the holding member of the support apparatus for solar cell modules which concerns on embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the terms “upper and lower”, “front and rear”, and “left and right” are based on the directions shown in the drawings.

≪Configuration of support device for solar cell module≫
The solar cell module support device 1 is a device that supports the solar cell module 2 at an installation location.
As shown in FIG. 1, a solar cell module support device 1 (hereinafter, appropriately referred to as a support device) includes a holding member 10 that holds a peripheral portion of a solar cell module 2 (hereinafter, appropriately referred to as a module) from both sides. And a support member 20 that supports the holding member 10 at the installation location 3.

<Holding member>
As shown in FIG. 2, the holding member 10 is a member that holds the module 2, and includes a frame body 11 in which the module 2 is disposed along the inside of the frame, and a plate body that is disposed below the frame body 11. 12 and a sandwiching body 13 disposed on the upper side of the frame body 11.
And the module 2 arrange | positioned in the frame (opening part 11a) of the frame 11 supports the plate body 12 from the up-down direction by the plate body 12 supporting from the lower side, and the clamping body 13 supporting from the upper side. The module 2 is held by the holding body 13.

(Frame)
The frame 11 is a member that supports the module 2 from the front, rear, left, and right directions by disposing the module 2 in the frame (opening 11a).
In the frame body 11, the length in the front-rear direction of the opening part 11a of the frame body 11 and the length in the front-rear direction of the module 2 are substantially the same so that the module 2 can be disposed in the frame (opening part 11a). Thus, the length in the left-right direction of the opening 11a of the frame 11 and the length in the left-right direction of the module 2 are configured to be substantially the same.
Further, the frame body 11 is configured such that the thickness of the frame body 11 and the thickness of the module 2 are substantially the same so that the module 2 does not protrude in the vertical direction when the module 2 is disposed in the frame (opening 11a). It is configured.

(Plate)
The plate 12 is a member that is installed below the frame 11 and the module 2 and supports the module 2 from below.
The plate 12 is formed with an escape portion 12a so that the wiring 4 extending from the back surface (lower surface) of the module 2 can be released.
The thickness of the plate 12 is not particularly limited.

(Holding body)
The sandwiching body 13 is a member that has a frame shape, is installed on the upper side of the frame body 11 and the module 2, and supports the module 2 from the upper side.
Then, the length of the opening 13a of the sandwiching body 13 in the front-rear direction is shorter than the length of the module 2 in the front-rear direction so that the sandwiching body 13 can support the peripheral portion of the module 2 from above. The length in the left-right direction of the opening 13 a of the sandwiching body 13 is configured to be shorter than the length in the left-right direction of the module 2.
The thickness of the sandwiching body 13 is not particularly limited. In addition, the sandwiching body 13 only needs to be able to sandwich the module 2 with the plate 12, so any shape can be used as long as a part of the peripheral portion of the surface of the module 2 is in contact with and supported from above. There may be. For example, the shape may be such that a plurality of protruding portions that protrude inward and come into contact with the peripheral portion of the surface of the module 2 are provided at a plurality of positions of the opening 13 a of the sandwiching body 13. However, in order to prevent a decrease in the amount of received sunlight of the module 2, it is preferable that the area where the sandwiching body 13 and the module 2 overlap in the vertical direction is as small as possible.

When the members 13 are aligned in the front-rear and left-right directions as shown in FIG. 2, the sandwiching body 13, the frame body 11, and the plate body 12 have three first intervals at equal intervals at the front and rear edge portions. The communication hole H1 is formed to communicate in the vertical direction.
Further, when the members are aligned in the front-rear and left-right directions as shown in FIG. 2, the sandwiching body 13, the frame body 11, and the plate body 12 are arranged at two equal intervals at the right and left edge portions. The second communication hole H2 is formed so as to communicate in the vertical direction.

Then, in a state where the sandwiching body 13, the frame body 11 in which the module 2 is arranged in the opening, and the plate body 12 are stacked and aligned in the vertical direction, the bolt 6a (first fastening) is inserted into the first communication hole H1 from above the sandwiching body 13. The holding member 10 holds the module 2 by screwing the nut 6b (first fastener 6) into the bolt 6a protruding downward from the first communication hole H1 of the plate body 12). Will be pinched).
In addition, by releasing the screwing by the nut 6b, the holding of the module 2 by the holding member 10 can be easily released.

<Supporting member>
The support member 20 is a member that supports the holding member 10 at the installation location 3.
The support member 20 is composed of four upright columnar rod supports, and two of the two rods are supported so that the holding member 10 can be supported at a predetermined angle with respect to the installation location 3. The support is longer than the remaining two bar supports. An upper support portion 21 that is in contact with the back surface of the connecting member 5 is formed on the upper portion of the support member 20, and a third communication hole H <b> 3 is formed in the upper support portion 21. The plane formed by the contact portions of the upper support portions 21 is inclined at a predetermined angle with respect to the installation place 3.
A lower support portion 22 is formed at the lower portion of the support member 20 so as to be fixed to the installation place 3.

<Connecting member>
The connecting member 5 is a member that connects the holding member 10 and the support member 20.
The connecting member 5 has a plate shape, and when the members are aligned as shown in FIG. 1, the connecting member 5 is positioned at a position (see FIG. 2) facing the second communication hole H <b> 2 of the holding member 10. The fourth communication hole H4 is located, and the fifth communication hole H5 of the connection member 5 is formed at a position facing the third communication hole H3 of the support member 20.
The thickness of the connecting member 5 is not particularly limited.

  Then, in a state where the holding member 10 and the connecting member 5 are overlapped and aligned in the vertical direction, the bolt 7a (second fastener) is inserted into the second communication hole H2 and the fourth communication hole H4 from the upper side of the holding member 10 (clamping body 13). 7) are connected, and the holding member 10 and the connecting member 5 are connected by screwing the nut 7b (second fastener 7) to the bolt 7a protruding downward from the fourth communication hole H4 of the connecting member 5. Will be.

  Then, in a state where the connecting member 5 and the support member 20 (upper support portion 21) are overlapped and aligned in the vertical direction, the bolt 8a (third fastening) is inserted into the fifth communication hole H5 and the third communication hole H3 from the upper side of the connection member 5. The connecting member 5 and the supporting member 20 are connected to each other by screwing the nut 8b (third fastener 8) to the bolt 8a protruding downward from the third communication hole H3 of the supporting member 20. Will be linked.

As mentioned above, although the structure of the support device for solar cell modules was demonstrated, this invention is not limited to the said structure, In the range which does not deviate from the summary of this invention described in the claim, for example, the following design changes Is possible.
The connecting member 5 is not an essential member, and the holding member 10 and the support member 20 may be directly connected. In this case, the second communication hole H2 of the holding member 10 and the third communication hole H3 of the support member 20 (upper support portion 21) are in a state where the holding member 10 and the support member 20 are aligned in the vertical direction. The holding member 10 and the support member 20 can be connected by being fastened by the second fastener 7 that is formed to face each other and communicates the second communication hole H2 and the third communication hole H3.
Further, the second communication hole H2 and the second fastener 7 (7a, 7b) of the holding member 10 are not indispensable structures, and the holding member 10 and the support member 20 are held in a state where they are aligned in the vertical direction. The first communication hole H1 of the member and the third communication hole H3 of the support member 20 (upper support portion 21) are formed to face each other, and the first communication hole H1 and the third communication hole H3 communicate with each other. The holding member 10 and the support member 20 may be coupled by fastening with the fastener 6 (6a, 6b).
Further, the number of the first communication hole H1, the second communication hole H2, the third communication hole H3, the fourth communication hole H4, the fifth communication hole H5, and the number of fasteners that fasten the respective communication holes are particularly high. It is not limited and may be increased or decreased according to the required stability.

The length in the front-rear direction and the left-right direction of the opening 11a of the frame 11 is configured to be slightly larger than the length in the front-rear direction and the left-right direction of the module 2, and a rubber material is provided on the inner peripheral surface of the opening 11a of the frame 11 You may provide the elastic member which consists of etc. By providing an elastic member at the location, even if vibration occurs in the front-rear and left-right directions, the elastic member absorbs the impact from the opening 11a of the frame body 11, thereby preventing the module 2 from being damaged. be able to.
In addition, the thickness of the frame body 11 is configured to be slightly larger than the thickness of the module 2, and an elastic member made of a rubber material or the like is provided between the plate body 12 and the module 2 and between the sandwiching body 13 and the module 2. It may be provided. By providing an elastic member at the location, even if vibration occurs in the vertical direction, the elastic member absorbs the impact from the plate body 12 and the sandwiching body 13, thereby preventing the module 2 from being damaged. be able to.
And the frame 11 and the clamping body 13 may be produced by making a hole in the center part of a board | plate material, and may be produced by joining four rods in frame shape by laser welding etc.

  The configuration of the support member 20 is not particularly limited. For example, the number of rod supports may be increased or decreased according to the required stability. Further, the support member 20 has a configuration in which the angle of the module 2 can be changed following the movement of the sun so that the module 2 can receive a large amount of sunlight, that is, a configuration in which the holding member 10 is supported while moving. There may be.

The first fastener 6 (6a, 6b), the second fastener 7 (7a, 7b), and the third fastener 8 (8a, 8b) have been described with respect to the case where they are configured with bolts and nuts, respectively. It is not limited to this, A screw, a screw, etc. may be sufficient.
Moreover, although the case where each member was fastened with a fastener so that the module 2 could be removed from the support apparatus 1 was demonstrated, when the service life of the module 2 and the support apparatus 1 is comparable, a fastener is used. Instead, each member may be connected by welding or the like.

  The installation location is not particularly limited, and may be a basic ground provided in a solar power plant or the like, or may be a residential roof assuming home solar power generation.

≪Composition of support device for solar cell module≫
The holding member 10 and the support member 20 of the support device 1 are made of pure titanium or a titanium alloy.
In addition, when the support apparatus 1 is provided with the connection member 5, it is preferable that the connection member 5 is also comprised from a pure titanium or a titanium alloy. In addition, when the support device 1 includes the first fastener 6 (6a, 6b), the second fastener 7 (7a, 7b), and the third fastener 8 (8a, 8b), these fasteners are also pure. It is preferably composed of titanium or a titanium alloy.

  Pure titanium or a titanium alloy is excellent in corrosion resistance, so it does not rust semipermanently in the atmosphere and can be used over a long period of time. Moreover, since it is excellent in weather resistance, it hardly generates rust even in the vicinity of seawater or in seawater, and can be used without problems even if the support device is installed near the coast or on the sea.

Furthermore, pure titanium or a titanium alloy is excellent in mechanical strength, and the tensile strength of pure titanium is about 200 to 600 MPa, and the tensile strength of titanium alloy is about 500 to 1200 MPa. This tensile strength is equal to or higher than that of general soft iron, which is about 300 MPa. In particular, since the tensile strength of the titanium alloy is stronger than that of the iron-based material or aluminum, each member of the support device 1 can be configured to be thin and thin while maintaining the mechanical strength. As a result, the material used for the support device 1 can be reduced.
In addition, since pure titanium or titanium alloy weighs only 60% of the iron-based material, each member of the support device that is reduced in weight by being thin and thin as described above is further lightened.

  In addition, since the thermal expansion coefficient of pure titanium or a titanium alloy is close to the thermal expansion coefficient of the glass material used for the substrate of the module 2, the module 2 can be used even if thermal expansion or contraction occurs due to the presence or absence of sunlight reception. An extremely large stress is not generated between the (glass material) and the holding member 10. As a result, damage and destruction of the module 2 and the holding member 10 based on the stress can be prevented, and the module 2 and the holding member 10 can be used for a long period of time.

<Pure titanium>
Pure titanium is a substance having a high purity of titanium.
Pure titanium is easier to be processed into a desired shape by bending or pressing as compared with titanium alloy, and therefore, when applied to a member having a complicated shape in the support device 1, defects during the production of the member can be obtained. This leads to a reduction in the product ratio and shortens the production time.

And as for pure titanium, it is preferable that N and C as an unavoidable impurity are respectively N: 0.07 mass% or less, C: 0.08 mass% or less.
When N exceeds 0.07 mass%, TiN having a high melting point is formed, and when C exceeds 0.08 mass%, TiC is formed. As a result, workability and strength characteristics are formed. It is because it will reduce. Particularly preferably, Fe and O as inevitable impurities are respectively Fe: 0.5% by mass or less and O: 0.5% by mass or less.
Pure titanium may contain inevitable impurities other than those described above as long as the effects of the present invention are not hindered.

<Titanium alloy>
The titanium alloy is an alloy mainly composed of titanium.
Since the titanium alloy is superior in mechanical strength as compared with pure titanium, the weight of the entire support device 1 can be reduced by applying it to a member to be formed thin or thin in the support device 1. In addition, by using a titanium alloy having excellent mechanical strength, when installing the support device 1, allow sufficient strength design (providing strength that can cope with events that may cause unexpected impacts). Can do.

And titanium alloy is 0.01 mass% or more and 33 mass in total of 1 type or more and 5 types or less among Si, Pd, Ni, Ru, Cr, Al, V, Mo, Zr, Sn, Ta, Nb, and Fe. % Or less, and each component is preferably a predetermined value or less.
Thus, the titanium alloy further improves the tensile strength, corrosion resistance, or weather resistance by containing at least 0.01 mass% of one or more of the above components. In addition, when it contains exceeding 33 mass%, since workability will fall, it is unpreferable.

Each of the components is Si: 1.4 mass% or less, Pd: 0.6 mass% or less, Ni: 1.1 mass% or less, Ru: 0.04 mass% or less, Cr: 9.0 mass% or less, Al: 13.0 mass% or less, V: 32 mass% or less, Mo: 13.0 mass% or less, Zr: 11.0 mass% or less, Sn: 7.0 mass% or less, Ta: 10.0 mass% Hereinafter, Nb: 6.0% by mass or less and Fe: 4.0% by mass or less are preferable.
Hereinafter, the reason why each composition of the titanium alloy used in the support device according to the present invention is limited in numerical value will be described.

(Si: 1.4 mass% or less, Al: 13.0 mass% or less, Fe: 4.0 mass% or less)
Si, Al and Fe are effective elements for improving the corrosion resistance and improving the tensile strength. However, if it is added excessively, the workability is greatly reduced.
Therefore, Si is preferably 1.4% by mass or less, Al is 13.0% by mass or less, and Fe is 4.0% by mass or less.

(Pd: 0.6 mass% or less, Ru: 0.04 mass% or less)
Pb and Ru are additive elements that form a stable passive film mainly composed of titanium oxide on the surface of the titanium alloy, that is, are effective for improving corrosion resistance. However, when added excessively, the above effects are saturated and Pb and Ru are expensive elements, which is not preferable in terms of cost.
Therefore, Pd is preferably 0.6% by mass or less, and Ru is preferably 0.04% by mass or less.

(Ni: 1.1 mass% or less, Cr: 9.0 mass% or less, V: 32 mass% or less)
Ni, Cr, and V are elements that promote surface enrichment of Ru and Pd by coexisting with the respective elements. However, when added excessively, workability will fall.
Therefore, it is preferable that Ni is 1.1 mass% or less, Cr is 9.0 mass% or less, and V is 32 mass% or less.

(Mo, Zr, Sn, Ta, Nb)
Mo, Zr, Sn, Ta, and Nb improve the strength of the alloy and improve the workability. However, when it adds excessively, an intermetallic compound will be formed and workability will be reduced conversely.
For these reasons, Mo is preferably 13.0% by mass or less, Zr is preferably 11.0% by mass or less, Sn is preferably 7.0% by mass or less, and Ta is 10% by mass or less. It is preferable that it is 0.0 mass% or less, and it is preferable that Nb is 6.0 mass% or less.

In the titanium alloy, N and C as inevitable impurities are preferably N: 0.07% by mass or less and C: 0.08% by mass or less, respectively, and O as an inevitable impurity is O: More preferably 0.5 mass% or less.
The titanium alloy may contain inevitable impurities other than those described above as long as the effects of the present invention are not hindered.

1 Support device for solar cell module (support device)
2 Solar cell module (module)
3 Installation Location 4 Wiring 5 Connecting Member 6 First Fastener 6a Bolt (First Fastener)
6b Nut (first fastener)
7 Second fastener 7a Bolt (second fastener)
7b Nut (second fastener)
8 Third fastener 8a Bolt (third fastener)
8b Nut (third fastener)
DESCRIPTION OF SYMBOLS 10 Holding member 11 Frame 11a Opening part 12 Plate body 12a Escape part 13 Holding body 13a Opening part 20 Support member 21 Upper support part 22 Lower support part H1 1st communicating hole H2 2nd communicating hole H3 3rd communicating hole H4 4th Communication hole H5 5th communication hole

Claims (5)

A solar cell module support device for supporting a solar cell module having a plate shape at an installation place,
A holding member for holding a peripheral portion of the solar cell module from both sides; and
A support member for supporting the holding member at the installation location,
The supporting device for a solar cell module, wherein the holding member and the supporting member are made of pure titanium or a titanium alloy. The holding member is
A frame in which the solar cell module is disposed along the frame;
A plate that supports the back surface of the solar cell module and one surface of the frame;
And a clamping body that is installed on the other surface of the frame body and clamps the peripheral portion of the solar cell module with the plate body,
The sandwiching body, the frame body, and the plate body each have a first communication hole that communicates in the stacking direction in a state where they are overlapped with each other,
2. The solar cell module support according to claim 1, further comprising a first fastener that detachably fastens the sandwiching body, the frame body, and the plate body by communicating with the first communication hole. apparatus. The sandwiching body, the frame body, and the plate body each have a second communication hole that communicates with each other in the stacking direction in a state where they are overlapped with each other,
The support member has a third communication hole,
A connection provided between the plate body and the support member, having a fourth communication hole at a position corresponding to the second communication hole, and having a fifth communication hole at a position corresponding to the third communication hole. With a member,
A second fastener for detachably fastening the clamping body, the frame body, the plate body, and the connecting member by communicating with the second communication hole and the fourth communication hole; and the third connection hole; The solar cell module support device according to claim 2, further comprising a third fastener that detachably fastens the connecting member and the support member by communicating with the fifth communication hole. .   The N and C as inevitable impurities of the pure titanium or titanium alloy are N: 0.07 mass% or less and C: 0.08 mass% or less, respectively. 4. The solar cell module support device according to any one of 3 above. The titanium alloy includes 0.01% by mass or more and 33% by mass or more of one or more of Si, Pd, Ni, Ru, Cr, Al, V, Mo, Zr, Sn, Ta, Nb, and Fe. Containing
Si: 1.4 mass% or less, Pd: 0.6 mass% or less, Ni: 1.1 mass% or less, Ru: 0.04 mass% or less, Cr: 9.0 mass% or less, Al: 13.0 % By mass, V: 32% by mass or less, Mo: 13.0% by mass or less, Zr: 11.0% by mass or less, Sn: 7.0% by mass or less, Ta: 10.0% by mass or less, Nb: 6 The solar cell module support device according to claim 4, wherein the mass ratio is 0.0 mass% or less and Fe: 4.0 mass% or less.

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