JP6508987B2 - Connecting member for solar cell module and solar cell system - Google Patents

Description

  The present invention relates to a connection member for a solar cell module that generates electric power using sunlight and a solar cell system formed by connecting a solar cell module using the connection member.

  When equipment such as solar cell system equipment is installed on the roof of a building or on the ground, members constituting these equipment need to be electrically grounded. In particular, in the frame of the solar cell module, in order to take an electrical ground, the ground wiring is provided to each solar cell module one by one, but there is a problem that the labor and cost of the implementation process increase.

  For such problems, a method as shown in FIG. 4 of Patent Document 1, for example, is conventionally taken. In Patent Document 1, frames of adjacent solar cell modules are electrically connected using a steel connection member (corresponding to the connection member 10 of reference 1), and earth wiring is performed on one solar cell module. There is mentioned a method of electrically grounding a plurality of solar cell modules.

  Specifically, a method of electrically connecting adjacent solar cells in Patent Document 1 will be described. First, holes for screwing in are formed on one side of the adjacent solar cell modules. Next, the solar cell module and the connection member are positioned such that the screw insertion hole formed in the connection member matches the screw insertion hole of the solar cell module. Finally, the screw is fitted into the matched screw fitting hole to fix the respective solar cell module and the connecting member. By connecting in this manner, adjacent solar cell modules are electrically connected via the screw and the connecting member.

Japanese Patent Application Publication No. 2001-81920

  However, in the method of electrically connecting adjacent solar cell modules as in Patent Document 1, the solar cell module to which an external force is applied when an external force such as wind pressure or earthquake is applied to the solar cell modules is the other solar cell module. It is displaced relative to the battery module and stress is applied to the connecting member. Further, since an external force such as wind pressure or earthquake is repeatedly applied, repeated stress is applied, and the connection member is damaged due to metal fatigue. In particular, since stress is concentrated on the fixing point at which the solar cell module and the connecting member are fixed by the screw, breakage often occurs from the screw or the fixing point. The connection method as in Patent Document 1 maintains the electrical grounding of the solar cell module for a long period of time because the damage may break the electrical connection between the solar cell module and the connection member. It is difficult.

  The present invention has been made in view of the above problems, and it is possible to easily perform electrical grounding of a plurality of solar cell modules, and to maintain the electrical grounding of the solar cell modules in a long term. An object of the present invention is to provide a connecting member and a solar cell system.

The connection member for a solar cell module according to the present invention includes: a first fixing portion having an elongated shape; a second fixing portion having an elongated shape extending in parallel to the first fixing portion; 1 at one end and a joint technique of the longitudinal one end portion in the longitudinal direction and the second fixing portion of the fixing portion, the first longitudinal direction of the other end of the fixed portion and the second A connecting portion not connecting the other end of the fixing portion in the longitudinal direction, and the first fixing portion has a first elongated hole extending in the longitudinal direction of the first fixing portion The second fixing portion has a second elongated hole extending in the longitudinal direction of the second fixing portion, and the first fixing portion, the second fixing portion, and the connecting portion are conductive. And the first fixing portion is fixed to the first solar cell module by a first screw inserted into the first elongated hole, and the second fixing hole is inserted into the second elongated hole. Is fixed to the second solar cell module, wherein the second fixing portion is adjacent to the first solar cell module by input has been second screw, the first fixing portion, the second fixing portion, The connecting portion is characterized in that a shape viewed along a direction in which the first screw is inserted is U-shaped .

A solar cell system according to the present invention includes a rectangular first solar cell panel, a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell panel. And a second solar cell panel having a rectangular shape, and a pair of electrically conductive short side frames and a pair of long sides surrounding the periphery of the second solar cell panel. A second solar cell module having a frame and being adjacent to the first solar cell module along a short direction, a third solar cell panel having a rectangular shape, and the third solar cell panel A third solar cell module having a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell module and being adjacent to the first solar cell module in the longitudinal direction And a long shape, in the longitudinal direction of the long shape A first connecting member having a first elongated hole and a second elongated hole; and a first elongated member having a third elongated hole extending in a longitudinal direction of the first fixing portion; A fixing portion, the second fixing portion having a long shape extending in parallel to the first fixing portion and having a fourth elongated hole extending in the longitudinal direction of the second fixing portion; A second connecting member having a longitudinal end of the fixed portion and a connecting portion connecting the longitudinal end of the second fixed portion, the second connecting member being inserted into the first elongated hole The first connection member is the first solar cell such that the longitudinal direction of the first connection member is parallel to the short direction of the first solar cell module by the first screw. A second screw fixed to the short side frame of the module and inserted in the second elongated hole makes the length of the first connection member The first connection member is fixed to the short side frame of the second solar cell module so that the direction is parallel to the short direction of the second solar cell module, and the third length The second screw is arranged such that a longitudinal direction of a first fixing portion of the second connecting member is parallel to a lateral direction of the first solar cell module by a third screw inserted in the hole. The second fixing portion is fixed to the short side frame of the first solar cell module by the fourth screw inserted in the fourth elongated hole, for the second connection. The second fixing portion of the second connection member is the third solar cell such that the longitudinal direction of the second fixing portion of the member is parallel to the short direction of the third solar cell module It is characterized in that it is fixed to the short side frame of the module .

A solar cell system according to the present invention includes a rectangular first solar cell panel, a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell panel. And a second solar cell panel having a rectangular shape, and a pair of electrically conductive short side frames and a pair of long sides surrounding the periphery of the second solar cell panel. A second solar cell module having a frame and being adjacent to the first solar cell module along a short direction, a third solar cell panel having a rectangular shape, and the third solar cell panel A third solar cell module having a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell module and being adjacent to the first solar cell module in the longitudinal direction And a long shape, in the longitudinal direction of the long shape A first connecting member having a first elongated hole and a second elongated hole; and a first elongated member having a third elongated hole extending in a longitudinal direction of the first fixing portion; A fixing portion, the second fixing portion having a long shape extending in parallel to the first fixing portion and having a fourth elongated hole extending in the longitudinal direction of the second fixing portion; A second connecting member having a longitudinal end of the fixed portion and a connecting portion connecting the longitudinal end of the second fixed portion, the second connecting member being inserted into the first elongated hole The first connection member is the first solar cell such that the longitudinal direction of the first connection member is parallel to the short direction of the first solar cell module by the first screw. A second screw fixed to the short side frame of the module and inserted in the second elongated hole makes the length of the first connection member The first connection member is fixed to the short side frame of the second solar cell module so that the direction is parallel to the short direction of the second solar cell module, and the third length The second screw is arranged such that a longitudinal direction of a first fixing portion of the second connecting member is parallel to a lateral direction of the first solar cell module by a third screw inserted in the hole. The second fixing portion is fixed to the short side frame of the first solar cell module by the fourth screw inserted in the fourth elongated hole, for the second connection. The second fixing portion of the second connection member is the third solar cell such that the longitudinal direction of the second fixing portion of the member is parallel to the short direction of the third solar cell module It is characterized in that it is fixed to the short side frame of the module .

According to the present invention, even if the solar cell module is displaced relative to other solar cell modules, a part of the displacement is absorbed by the displacement of the screw along the elongated hole, and the stress applied to the connection member is reduced. Can maintain the electrical ground of the solar cell module for a long time.

It is a perspective view of a solar cell system concerning the present invention. It is a side view of a solar cell system concerning the present invention. FIG. 1 is a top view of a solar cell module according to Embodiment 1. 5 is an enlarged view of a region D shown in FIG. 3 of the solar cell module according to Embodiment 1. FIG. It is EE sectional drawing shown in FIG. 4 of the solar cell module which concerns on Embodiment 1. FIG. 5 is a top view of an end portion of a long side frame body according to Embodiment 1. FIG. 5 is a perspective view of an end portion of a long side frame body according to Embodiment 1. FIG. It is an enlarged view of field A shown in Drawing 1 of the solar cell system concerning the present invention. It is FF sectional drawing shown by FIG. 8 of the solar cell system which concerns on this invention. FIG. 2 is an enlarged view of a region B shown in FIG. 1 of the solar cell system according to Embodiment 1. FIG. 11 is a cross-sectional view along line GG shown in FIG. 10 of the solar cell system according to Embodiment 1. 5 is a perspective view of a first connection member according to Embodiment 1. FIG. FIG. 2 is an enlarged view of a region C shown in FIG. 1 of the solar cell system according to Embodiment 1. It is HH sectional drawing shown in FIG. 13 of the solar cell system which concerns on Embodiment 1. FIG. 5 is a perspective view of a second connection member according to Embodiment 1. FIG. FIG. 10 is a perspective view of a connection member according to Embodiment 2; FIG. 10 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of the solar cell system according to Embodiment 2. FIG. 18 is a cross-sectional view of the solar cell system according to the second embodiment, taken along line I-I shown in FIG. 17; FIG. 16 is an enlarged view of a portion corresponding to the area C shown in FIG. 1 of the solar cell system according to Embodiment 2. FIG. 20 is a cross-sectional view taken along line JJ of FIG. 19 of the solar cell system according to Embodiment 2. FIG. 21 is a perspective view of a first connection member according to a modification of the second embodiment. FIG. 21 is a perspective view of a second connection member according to a modification of the second embodiment. FIG. 16 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of a solar cell system according to a modification of Embodiment 2. FIG. 16 is an enlarged view of a portion corresponding to the region C shown in FIG. 1 of the solar cell system according to the modification of the second embodiment. FIG. 20 is a top view of a solar cell module according to Embodiment 3. 25 is an enlarged view of a region K shown in FIG. 25 of the solar cell module according to Embodiment 3. FIG. FIG. 18 is a top view of an end portion of a long side frame according to a third embodiment. FIG. 20 is a perspective view of a first connection member according to Embodiment 3. FIG. 16 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of the solar cell system according to Embodiment 3. FIG. 20 is a perspective view of a second connection member according to Embodiment 3. FIG. 16 is an enlarged view of a portion corresponding to the region C shown in FIG. 1 of the solar cell system according to Embodiment 3. It is an upper side figure of the solar cell module concerning the modification of Embodiments 1-3.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. In the description of the embodiment, the description of the same or corresponding parts will be appropriately omitted or simplified.

Embodiment 1
FIG. 1 is a perspective view of a solar cell system according to the present invention. FIG. 2 is a side view of a solar cell system according to the present invention. First, the configuration of the entire solar cell system 100 will be described. The solar cell system 100 includes a plurality of rectangular solar cell modules 1 and a support rack 2 for supporting the solar cell modules 1. In addition, the solar cell system 100 has eight sheets of the solar cell modules 1, and numbers them as solar cell modules 1a to 1h as shown in FIG. The plurality of solar cell modules 1 are respectively the longitudinal direction of the solar cell module (corresponding to the first direction of the present invention) and the lateral direction of the solar cell module perpendicular to the longitudinal direction (the second direction of the present invention Are arranged respectively along with.

  Further, the ground wire 3 is electrically connected to at least one of the plurality of solar cell modules 1 (corresponding to the solar cell module 1a in the first embodiment), and is electrically grounded. In addition, the solar cell system 100 includes a first connection member 4 (see FIG. 10) for electrically connecting adjacent solar cell modules 1 along the longitudinal direction and a solar cell module adjacent along the lateral direction. A second connecting member 5 (see FIG. 13) for electrically connecting 1 is provided. As described later, all the solar cell modules 1 of the solar cell system 100 (all the solar cell modules 1a to 1h correspond to the first embodiment) are electrically connected by the first connection member 4 and the second connection member 5 It is connected to the.

  FIG. 3 is a top view of the solar cell module according to the first embodiment. Next, the solar cell module 1 will be described. The solar cell module 1 includes a rectangular solar cell panel 11 and a frame 12 surrounding the solar cell panel 11. The frame 12 has a long shape, a pair of long side frames 13 attached along the longitudinal direction of the solar cell panel 11 in the longitudinal direction, and a long shape and a short direction of the solar cell panel 11 in the longitudinal direction. And a pair of short side frames 14 attached along the The frame 12 is respectively formed using a conductive material such as aluminum, and the long side frame 13 and the short side frame 14 constituting the frame 12 are all electrically connected.

  FIG. 4 is an enlarged view of a region D shown in FIG. 3 of the solar cell module according to the first embodiment. FIG. 5 is a cross-sectional view of the solar cell module according to the first embodiment, taken along the line E-E shown in FIG. As shown in FIGS. 4 and 5, the long side frame 13 is formed so as to project from the wall surface 13 a provided along the side surface of the solar cell panel 11 to the solar cell panel 11 side from the wall surface 13 a A holding portion 13b for holding the outer periphery on the long side of the panel 11, a bottom portion 13c which is projected from the wall surface toward the solar cell panel 11 and provided at a distance from the holding portion 13b The flange portion 13d formed to be exposed is integrally configured. The wall surface 13a, the holding portion 13b, the bottom portion 13c, and the flange portion 13d are formed to extend in the longitudinal direction of the long side frame 13. For this reason, the wall surface 13 a, the holding portion 13 b, the bottom portion 13 c, and the flange portion 13 d extend in parallel with the longitudinal direction of the solar cell panel 11. Further, the tip of the flange portion 13 d is provided with a protrusion that protrudes to the upper surface side of the solar cell module 1.

  The frame side screw holes 13e are formed at the positions located at both ends of the flange portion 13d. For this reason, as shown in FIG. 3, frame side screw holes 13e are provided at the four corners of the solar cell module 1, respectively.

  FIG. 6 is a top view of an end portion of the long side frame body according to the first embodiment. FIG. 7 is a perspective view of the end portion of the long side frame body according to the first embodiment. The holding portion 13b and the bottom portion 13c are not projected at both ends of the long side frame 13, and a portion where the holding portion 13b and the bottom portion 13c are not projected is referred to as a notch 13f. In the notch 13 f, the end of the short side frame 14 is butted from the solar cell panel 11 side so as to abut on the wall surface 13 a of the long side frame 13. In the long side frame 13 of the first embodiment, in the longitudinal direction of the long side frame 13, the center of the frame side screw hole 13e is the end of the long side frame 13 rather than the end of the holding portion 13b. Located on the club side.

  In addition, a frame fixing screw hole 13g is formed in a portion of the wall surface 13a located in the notch 13f. A screw hole is formed in the short side frame 14 at a position corresponding to the frame fixing screw hole 13g so that the long side frame 13 and the short side frame 14 can be screwed and fixed. It has become. The screw used for screwing is electrically conductive, and the outer diameter of the screw portion is larger than the diameter of the frame fixing screw hole 13g of the long side frame 13 and the diameter of the screw hole of the short side frame 14. A tapping screw or the like having a large size is used, and the long side frame 13 and the short side frame 14 are electrically connected via the screw. In addition, the long side frame 13 and the short side frame 14 are being fixed by the same method at all the four corners of the solar cell module 1. By using a tapping screw, screwing can be performed easily and firmly.

  The screw 6 is not limited to the tapping screw. A female screw may be cut in the frame side screw hole 13e and screwed with a parallel screw. In this configuration, the number of parts is not increased, and the deformation of the screw portion of the frame is small, so that it can be used repeatedly. Alternatively, a screw hole having a diameter larger than the outer diameter of the screw portion may be formed on the frame side, and the screw may be fixed with a nut from the opposite side. In this method, since the screw portion of the frame is not deformed, it can be used repeatedly, and damage to the screw hole due to an operation failure or the like can be suppressed.

  FIG. 8 is an enlarged view of the region A shown in FIG. 1 of the solar cell system according to the present invention. FIG. 9 is a cross-sectional view of the solar cell system according to the present invention taken along the line FF shown in FIG. Next, connection of the solar cell module 1 and the ground wire 3 will be described. One end of the ground wire 3 is fixed to a conductive earth metal fitting 3a in a state of being electrically connected to the ground wire metal fitting 3a by caulking or the like. A fitting side screw hole 3b is provided in the ground wire fitting 3a.

  The earth metal fitting 3 a is disposed in the flange portion 13 d of the long side frame 13 so that the metal fitting side screw hole 3 b and the frame side screw hole 13 e are at the same position when viewed from the top of the solar cell module 1. The screw 6 is inserted into the metal fitting side screw hole 3 b and the frame side screw hole 13 e, and the earth wire metal fitting 3 a is fixed to the long side frame 13 by the screw 6. The screw 6 is electrically conductive, and a tapping screw or the like having an outer diameter larger than the diameter of the metal fitting side screw hole 3b and the diameter of the frame side screw hole 13e is used, and the earth wire metal fitting 3a and the long side frame 13 It is designed to be electrically connected. Therefore, the long-side frame 13 is connected to the ground wire 3 via the ground wire fitting 3a, and the solar cell module 1 (the solar cell module 1a in the first embodiment) in which the ground wire fitting 3a is disposed. Is applicable to the frame 12 is electrically grounded.

  FIG. 10 is an enlarged view of a region B shown in FIG. 1 of the solar cell system according to the first embodiment. FIG. 11 is a cross-sectional view along line GG shown in FIG. 10 of the solar cell system according to the first embodiment. FIG. 12 is a perspective view of the first connection member according to the first embodiment. Next, electrical connection of the solar cell modules 1 adjacent to each other along the longitudinal direction of the solar cell module 1 will be described. The solar cell module 1a and the solar cell module 1e are adjacent to each other along the longitudinal direction, and the short side frames 14 face each other. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1e corresponds to the second solar cell module.

  The first connection member 4 is disposed on the flange portion 13d of the long side frame 13 of the solar cell module 1a and the flange portion 13d of the long side frame 13 of the solar cell module 1e. The first connection member 4 is a member having a rectangular shape, that is, a long shape, and is configured using a conductive material such as aluminum. Further, the first connection member 4 is formed with member-side elongated holes 4c (corresponding to the elongated holes of the present invention) at both ends in the longitudinal direction. Further, the member-side elongated hole 4 c is formed such that the longitudinal direction of the member-side elongated hole 4 c is along the longitudinal direction of the first connection member 4.

  The first connection member 4 is a part of the member-side long hole 4c formed at one end, the frame-side screw hole 13e of the solar cell module 1a, and the member-side long hole formed at the other end A part of 4c and the frame side screw hole 13e of the solar cell module 1e are arranged so as to be at the same position when viewed from the top of the solar cell module 1. Further, the longitudinal direction of the member-side elongated hole 4 c is parallel to the longitudinal direction of the solar cell module 1. Screws 6a are inserted through the respective member-side long holes 4c and the frame-side screw holes 13e, and the first connection member 4 is fixed to the frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1e by the screws 6a. It is done. The screw 6a is electrically conductive, and a tapping screw or the like having an outer diameter larger than the width in the short direction of the member side elongated hole 4c and the diameter of the frame side screw hole 13e is used. The frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1e are electrically connected. For this reason, the frame 12 of the solar cell module 1 a and the frame 12 of the solar cell module 1 e are electrically connected via the first connection member 4.

  FIG. 13 is an enlarged view of a region C shown in FIG. 1 of the solar cell system according to the first embodiment. FIG. 14 is a cross-sectional view of the solar cell system according to the first embodiment taken along the line HH shown in FIG. FIG. 15 is a perspective view of a second connection member according to the first embodiment. Next, electrical connection of the solar cell modules 1 adjacent to each other along the short side direction of the solar cell module 1 will be described. The solar cell module 1a and the solar cell module 1b are adjacent to each other along the short side direction, and the long side frames 13 face each other. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1b corresponds to the second solar cell module.

  The second connection member 5 is disposed on the flange portion 13 d of the long side frame 13 of the solar cell module 1 a and the flange portion 13 d of the long side frame 13 of the solar cell module 1 b. The second connection member 5 is U-shaped when viewed from the top, and has a pair of fixed portions 5a in a rectangular shape extending in parallel with each other, that is, a long shape, and one end of the fixed portion 5a in the longitudinal direction It is comprised from the connection part 5b to connect. A member-side elongated hole 5c is formed at the other end of the pair of fixing portions 5a in the longitudinal direction. The connection part 5b is protruded in the upper surface direction with respect to the fixing part 5a. The member-side long hole 5c is formed such that the longitudinal direction of the member-side long hole 5c is along the longitudinal direction of the fixed portion 5a. The second connection member 5 is configured using a conductive material such as aluminum.

  The second connection member 5 is a member side formed in a part of the member side long hole 5c formed in one fixing portion 5a, the frame side screw hole 13e of the solar cell module 1a, and the other fixing portion 5a. A part of the long hole 5 c and the frame side screw hole 13 e of the solar cell module 1 b are arranged so as to be at the same position when viewed from the upper surface of the solar cell module 1. Further, the longitudinal direction of the member-side elongated hole 5 c is parallel to the longitudinal direction of the solar cell module 1. The screws 6b are inserted through the respective member-side elongated holes 5c and the frame-side screw holes 13e, and the second connection member 5 is fixed to the frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1b by the screws 6b. It is done. The screw 6b is electrically conductive, and a tapping screw or the like having an outer diameter larger than the width in the short direction of the member-side elongated hole 5c and the diameter of the frame-side screw hole 13e is used. The frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1b are electrically connected. Therefore, the frame 12 of the solar cell module 1 a and the frame 12 of the solar cell module 1 b are electrically connected via the second connection member 5.

  Although the electrical connection between the frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1b and the frame 12 of the solar cell module 1e is described with reference to FIGS. 10 to 15, the solar cell system 100 is configured The frames 12 of the adjacent solar cell modules 1 are for the first connection so that the frames 12 of all the solar cell modules 1 (all the solar cell modules 1a to 1h correspond to the first embodiment) are electrically connected. It is electrically connected using the member 4 and the second connection member 5. For example, in Embodiment 1, the solar cell module 1a and the solar cell module 1b, the solar cell module 1b and the solar cell module 1c, and the solar cell module 1c and the solar cell module 1d use the second connection member 5 The respective frames 12 are electrically connected, and the solar cell module 1a and the solar cell module 1e, the solar cell module 1b and the solar cell module 1f, the solar cell module 1c and the solar cell module 1g, and the solar cell module 1d and the solar The battery module 1 h is electrically connected to the respective frames 12 using the first connection member 4.

  Thus, in the solar cell system 100 according to the first embodiment, the frames 12 of all the solar cell modules 1 are electrically connected, and at least one of the solar cell modules 1 of the solar cell system 100 (embodiment In the first embodiment, the frame 12 is electrically grounded in the solar cell module 1a. Therefore, the solar cell system 100 according to the first embodiment can easily electrically ground all the frames 12 of all the solar cell modules 1 without connecting the ground wiring to each of the solar cell modules 1. Electrical grounding of a plurality of solar cell modules can be performed.

  In the member-side elongated hole 4c of the first connection member 4 and the member-side elongated hole 5c of the second connection member 5 of the first embodiment, the longitudinal direction thereof is the longitudinal direction of the solar cell module 1. Parallel to each other. When an external force such as wind pressure or earthquake is applied to the solar cell module 1, the solar cell module 1 to which the external force is applied is displaced relative to the other solar cell modules 1, but a part of this displacement is a screw 6a or a screw 6b is absorbed by displacement along the member-side elongated hole 4c or the member-side elongated hole 5c. For this reason, the stress applied to the first connection member 4 or the second connection member 5 generated by the displacement of the solar cell module 1 is alleviated. Therefore, metal fatigue of the first connection member 4, the second connection member 5, the screw 6 a or the screw 6 b can be suppressed even when the external force is repeatedly applied, and the electrical connection of the solar cell module 1 can be maintained for a long time You can maintain a good grounding.

  Since the member-side elongated holes 4 c and 5 c are parallel to the longitudinal direction of the solar cell module 1, the solar cell system 100 of Embodiment 1 displaces the solar cell module 1 particularly in the longitudinal direction of the solar cell module 1. Exerts an excellent stress relaxation effect against such external forces. As such an external force, for example, a roll with respect to the longitudinal direction of the solar cell module 1 or a wind pressure such as lifting the solar cell modules 1 aligned along the short side direction can be mentioned.

  As described above, in the solar cell system 100 according to the first embodiment, the member-side elongated holes 4c and 5c in which the longitudinal direction extends in parallel to the solar cell module 1 in parallel with the longitudinal direction of the solar cell module are formed By electrically connecting using the first connection member 4 or the second connection member 5, electrical grounding of the plurality of solar cell modules can be easily performed, and the electrical connection of the solar cell modules can be achieved in a long term. It can keep the ground.

  In the solar cell system 100 according to the first embodiment, the first connection member 4 or the second connection member 4 is arranged such that the longitudinal direction of the solar cell module 1 and the longitudinal direction of the member-side elongated holes 4c and 5c are parallel to each other. Although the member 5 is arrange | positioned, the longitudinal direction of a flange part and the longitudinal direction of a member side long hole should just be attached in parallel not only this but this. For example, the short side frame is provided with a flange portion in which frame side screw holes are formed at both ends, and the long side of the member side long hole 5c in each flange portion of the solar cell module adjacent in the longitudinal direction of the solar cell module The second connection member 5 is disposed so as to be parallel to the short side direction of the solar cell module and electrically connected, and the respective flange portions of the solar cell modules adjacent in the short side direction of the solar cell module are connected The first connection member 4 may be disposed and electrically connected such that the longitudinal direction of the member-side long hole 4c is parallel to the short direction of the solar cell module. In this case, since the member-side elongated holes 4c and 5c are parallel to the short side direction of the solar cell module 1, in particular, against an external force which displaces the solar cell module 1 in the short side direction of the solar cell module 1. Exerts an excellent stress relaxation effect. As such an external force, for example, rolling of the solar cell module 1 in the short direction and wind pressure such as lifting the solar cell modules 1 aligned along the longitudinal direction may be mentioned. In this case, the short direction of the solar cell module 1 corresponds to the first direction of the present invention, and the longitudinal direction corresponds to the second direction of the present invention.

  Further, although the connecting portion 5b of the second connection member 5 of the first embodiment is raised in the upper surface direction with respect to the fixed portion 5a, this avoids the protrusion provided at the tip of the flange portion 13d. If the end of the flange portion is flat, the connecting portion 5b may also be flat.

Second Embodiment
In the solar cell system 100 according to the first embodiment, the first connection member 4 and the second connection member 5 are provided with the member-side elongated holes 4 c and 5 c in the first connection member 4 and the second connection member 5. The stress generated in the connection member 5 was relieved. On the other hand, in the solar cell system 100a according to the second embodiment, the connection member 40 is provided with the spring portion 40b, thereby alleviating the stress generated in the connection member 40. The configuration other than the connection between the solar cell modules 1 of the solar cell system 100a according to the second embodiment and the shape of the connection member 40 is substantially the same as the solar cell system 100 according to the first embodiment, so Omit

  FIG. 16 is a perspective view of the connection member according to the second embodiment. First, the shape of the connection member 40 according to the second embodiment will be described. The connection member 40 according to the second embodiment is a member having a rectangular shape, that is, a long shape when viewed from the top, and is configured using a conductive material such as aluminum. Further, the connecting member 40 is provided with fixing portions 40a in which respective member side round holes 40c (corresponding to the member side screw holes of the present invention) are formed at both ends in the longitudinal direction of the connecting member 40. A spring portion 40b is provided which is stretchable in the longitudinal direction of the member 40 and connects the fixing portions 40a. The spring portion 40 b according to the second embodiment is formed in a corrugated shape in which mountain folds and valley folds are alternately provided along the longitudinal direction of the connection member 40.

  FIG. 17 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of the solar cell system according to the second embodiment. FIG. 18 is a cross-sectional view of the solar cell system according to the second embodiment, taken along the line I-I shown in FIG. Next, electrical connection of solar cell modules 1 adjacent to each other along the longitudinal direction of solar cell module 1 in the second embodiment will be described. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1e corresponds to the second solar cell module.

  The connecting member 40 includes a member-side round hole 40c of one fixing portion 40a, a frame-side screw hole 13e of the solar cell module 1a, and a member-side round hole 40c of the other fixing portion 40a and a frame-side screw of the solar cell module 1e. The holes 13 e are arranged to be at the same position when viewed from the top of the solar cell module 1. Further, the longitudinal direction of the connection member 40 is parallel to the longitudinal direction of the solar cell module 1, and the spring portion 40 b can extend and contract in the longitudinal direction of the solar cell module 1. Screws 6c are inserted through the respective member side round holes 40c and the frame side screw holes 13e, and the connection member 40 is fixed to the frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1e by the screws 6c. . The screw 6c is conductive, and a tapping screw or the like having an outer diameter larger than the diameter of the member side round hole 40c and the diameter of the frame side screw hole 13e is used. The connecting member 40 and the frame 12 of the solar cell module 1a are used. The frame 12 of the solar cell module 1e is electrically connected. For this reason, the frame 12 of the solar cell module 1 a and the frame 12 of the solar cell module 1 e are electrically connected via the connection member 40.

  FIG. 19 is an enlarged view of a portion corresponding to the region C shown in FIG. 1 of the solar cell system according to Embodiment 2. FIG. 20 is a JJ cross-sectional view shown in FIG. 19 of the solar cell system according to the second embodiment. Next, the electrical connection of the solar cell modules 1 adjacent to each other along the short direction of the solar cell module 1 according to the second embodiment will be described. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1b corresponds to the second solar cell module.

  The connecting member 40 includes the member-side round hole 40c of the fixed portion 40a, the frame-side screw hole 13e of the solar cell module 1a, the member-side round hole 40c of the other fixed portion 40a, and the frame-side screw hole 13e of the solar cell module 1b. Are arranged at the same position when viewed from the top of the solar cell module 1. Further, the connecting member 40 is parallel to the short side direction of the solar cell module 1, and the spring portion 40 b can extend and contract in the short side direction of the solar cell module 1. Similar to the description of the electrical connection between the solar cell modules adjacent along the longitudinal direction, the screws 6c are inserted through the respective member side round holes 40c and the frame side screw holes 13e, and the connecting members 40 are connected by the screws 6c. Is fixed to the frame 12 of the solar cell module 1a and the frame 12 of the solar cell module 1b. For this reason, the frame 12 of the solar cell module 1 a and the frame 12 of the solar cell module 1 e are electrically connected via the connection member 40.

  In the solar cell system 100a according to the second embodiment, the frames 12 of all the solar cell modules 1 constituting the solar cell system 100a are electrically connected using the connection member 40. For this reason, similarly to the solar cell system 100 of the first embodiment, the solar cell system 100a of the second embodiment is configured such that the frames 12 of all the solar cell modules 1 are connected without connecting the ground wiring to each of the solar cell modules 1. Since it is possible to electrically ground all the components, it is possible to easily electrically ground the plurality of solar cell modules.

  Further, the spring portion 40 b of the connection member 40 of the solar cell system 100 a of the second embodiment is extendable and contractible in the longitudinal direction of the connection member 40. When an external force such as wind pressure or earthquake is applied to the solar cell module 1, the solar cell module 1 to which the external force is applied is displaced relative to the other solar cell modules 1. Is absorbed by the expansion and contraction of the spring portion 40b. For this reason, the stress applied to the connection member 40 generated by the displacement of the solar cell module 1 is alleviated, and for the same reason as in the first embodiment, the electrical grounding of the solar cell module 1 can be maintained for a long time.

  Furthermore, when connecting the solar cell modules 1 adjacent to each other in the longitudinal direction, the solar cell modules are fixed so that the longitudinal direction of the connecting member 40 and the longitudinal direction of the solar cell module 1 are parallel to each other. When connecting the two, since the longitudinal direction of the connecting member 40 and the short direction of the solar cell module 1 are fixed parallel to each other, the solar cell module 1 is displaced in the longitudinal direction of the solar cell module 1 It exerts an effect of stress relaxation excellent for both such external force and external force for displacing the solar cell module 1 in the short direction.

  As described above, in the solar cell system 100a of the second embodiment, a plurality of solar cells can be easily connected by electrically connecting the adjacent solar cell modules 1 using the connection member 40 in which the spring portion 40b is formed. The electrical grounding of the battery module can be performed, and the electrical grounding of the solar cell module can be maintained for a long time.

  Moreover, in the solar cell system 100 of Embodiment 1, all the solar cell modules 1 are electrically connected using two types of connection members of the first connection member 4 and the second connection member 5. However, in the solar cell system 100a according to the second embodiment, since all the solar cell modules 1 can be electrically connected using only one type of connecting member 40, the manufacturing cost of the connecting member is reduced. .

  In addition, in the solar cell system 100a of Embodiment 2, although the member 40 for connection has the member side round hole 40c for screwing, it does not restrict to this, and if it has a spring part, it mentions later. As in the modification of the second embodiment, the first connection member 41 or the second connection member 42 having the member-side elongated hole may be used as in the first embodiment.

  FIG. 21 is a perspective view of a first connection member according to a modification of the second embodiment. For example, the first connection member 41 has a rectangular shape when viewed from the top, that is, an elongated shape, and is provided with a pair of fixing portions 41a each having a member-side long hole 41c formed at both ends in the longitudinal direction. Further, the first connection member 41 is provided with a spring portion 41 b which is extendable in the longitudinal direction and which connects the pair of fixing portions 41 a. The member-side elongated hole 41 c is formed such that the longitudinal direction of the member-side elongated hole 41 c is along the longitudinal direction of the first connection member 41.

  FIG. 22 is a perspective view of a second connecting member according to a modification of the second embodiment. The second connecting member 42 is U-shaped as viewed from the top, and can extend and contract in the widthwise direction of a pair of fixed portions 42a and fixed portions 42a extending in parallel with each other. And a spring portion 42b connecting one longitudinal end of the fixing portion 42a. Furthermore, a member-side long hole 42c is respectively formed at the other end of the pair of fixing portions 42a in the longitudinal direction, and the members are arranged such that the longitudinal direction of the member-side long holes 42c is along the longitudinal direction of the fixing portion 42a. Side long holes 42c are formed.

  FIG. 23 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of the solar cell system according to the modification of the second embodiment. FIG. 24 is an enlarged view of a portion corresponding to the region C shown in FIG. 1 of the solar cell system according to the modification of the second embodiment. In the region B, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1e corresponds to the second solar cell module. Moreover, in the area | region C, the solar cell module 1a corresponds to the 1st solar cell module of this invention, and the solar cell module 1b corresponds to the 2nd solar cell module. As in the first embodiment, in the first connecting member 41, the longitudinal direction of the member-side elongated hole 41c is the length of the solar cell module 1 so as to electrically connect the solar cell modules 1 adjacent to each other in the longitudinal direction. It is disposed parallel to the direction and fixed by the screw 6a. Further, as in the first embodiment, the longitudinal direction of the member-side elongated hole 42c of the second connection member 42 is the solar cell module so as to electrically connect the solar cell modules 1 adjacent to each other in the short direction. It is disposed parallel to the longitudinal direction of 1 and fixed by a screw 6b. At this time, the spring portion 41 b of the first connection member 41 can expand and contract in the longitudinal direction of the solar cell module 1, and the spring portion 42 b of the second connection member 42 can extend in the lateral direction of the solar cell module 1. It is stretchable.

  Therefore, the solar cell system 100b according to the modification of the second embodiment has the same effect as that of the second embodiment, with the effect of alleviating the stress of the connecting member due to the member side long holes 41c and 42c similar to the first embodiment. The effect of relieving the stress of the connecting member due to the spring portions 41 b and 42 b can be simultaneously achieved, so that the first connecting member 41 and the second connecting member 42 generated by the displacement of the solar cell module 1 are added. The stress is relieved more than the solar cell system 100 of the first embodiment and the solar cell system 100a of the second embodiment, and the electrical grounding of the solar cell module 1 can be maintained for a long time.

  Moreover, although the connection member 40 of Embodiment 2 and the solar cell module 1 are fixed by screwing, the solar cell system 100a of Embodiment 2 has an effect that the stress of the connection member is relieved by the spring portion 40b. In order to achieve the same, the method of fixing the connecting member 40 and the solar cell module 1 is not limited to screwing, but if the connecting member 40 and the solar cell module 1 are electrically connected, other fixing means such as welding may be used. good.

Third Embodiment
The solar cell system 100c according to the third embodiment is different from the solar cell system 100 according to the first embodiment in the position of the frame side screw hole formed in the long side frame and the first connection member. The distance between the pair of member-side elongated holes formed is different from the length in the longitudinal direction of the fixing portion of the second connection member. The remaining configuration is substantially the same as that of the solar cell system 100 of the first embodiment, and thus the description thereof will be omitted.

  FIG. 25 is a top view of the solar cell module according to the third embodiment. 26 is an enlarged view of a region K shown in FIG. 25 of the solar cell module according to Embodiment 3. FIG. FIG. 27 is a top view of the end portion of the long side frame body according to the third embodiment. First, the long side frame 15 constituting the frame 12 of the solar cell module 1 in the third embodiment will be described. In the long side frame 15, the end of the holding portion 15b in the longitudinal direction of the long side frame 13 is located closer to the end than the center of the frame side screw hole 15e. In addition, the structure of other than that, ie, the wall surface 15a of the long side frame 15, the holding part 15b, the bottom part (illustration omitted), the flange part 15d, the notch part 15f, the screw hole for frame fixation (illustration Description is omitted because it is substantially the same as the wall surface 13a, the bottom 13c, the flange 13d, the notch 13f, and the frame fixing screw hole 13g of the long side frame 13 of the first embodiment. Omit

  FIG. 28 is a perspective view of the first connection member according to the third embodiment. Next, the first connection member 51 according to the third embodiment will be described. In the first connection member 51, the distance between the pair of member-side long holes 51c is longer than the distance between the pair of member-side long holes 4c of the first connection member 4 according to the first embodiment. The other configurations, for example, the shape of the first connecting member 51, the shape of the member-side elongated hole 51c, etc. are the shape of the first connecting member 4 of the first embodiment, and the member-side elongated hole 4c. The description is omitted because it is almost the same as the shape of.

FIG. 29 is an enlarged view of a portion corresponding to the region B shown in FIG. 1 of the solar cell system according to Embodiment 3. Next, electrical connection of the solar cell modules 1 adjacent to each other along the longitudinal direction of the solar cell module 1 according to the third embodiment will be described. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1e corresponds to the second solar cell module.

  Also in the solar cell system 100c according to the third embodiment, the member side long hole 51c and the frame side screw hole 15e of the solar cell module 1 are the upper surface of the solar cell module 1 as in the solar cell system 100 according to the first embodiment. The frame 12 of the solar cell module 1 and the first connection member 51 are fixed by inserting the screw 6a into the member-side long hole 51c and the frame-side screw hole 15e. Ru. However, in the solar cell system 100c according to the third embodiment, in the first connection member 51, the distance X between the fixing points at which the solar cell module 1 and the first connection member 51 are fixed by the screw 6a is The interval is longer than the interval of the solar cell system 100 of the first aspect.

  Here, assuming that an external force is applied to one of the solar cell modules 1 (for example, the solar cell module 1 e) adjacent in the longitudinal direction of the solar cell module 1 to displace in the lateral direction of the solar cell module 1, one sun The cell module 1 is displaced relative to the other solar cell module 1, and shear stress is generated in the first connection member 51. The shear stress is proportional to the shear strain, and the shear strain decreases as the distance X between the fixing points increases as long as the displacement with respect to the adjacent solar cell module 1 is the same. For this reason, when the displacement amount of the solar cell module 1 is the same, the shear stress generated in the first connection member 51 decreases as the distance between the fixing points increases. The distance X between the fixing points of the first connection member 51 of the solar cell system 100c according to the third embodiment is equal to the distance between the fixing points of the first connection member 4 of the solar cell system 100 according to the first embodiment. Also, the shear stress generated in the first connection member 51 of the third embodiment is smaller than the shear stress generated in the first connection member 4 of the first embodiment.

  FIG. 30 is a perspective view of a second connection member according to the third embodiment. Next, the second connection member 52 according to the third embodiment will be described. In the second connection member 52 according to the third embodiment, the length in the longitudinal direction of the fixing portion 52a is longer than the length in the longitudinal direction of the fixing portion 5a of the second connection member 5 according to the first embodiment. It has become. Further, the distance between the member-side long hole 52c and the connection portion 52b according to the third embodiment is also longer than the distance between the member-side long hole 5c and the connection portion 5b of the second connection member 5 according to the first embodiment. ing. The other configurations, for example, the shapes of the fixing portion 52a, the connecting portion 52b, and the member-side elongated hole 52c, are the same as the fixing portion 5a, the connecting portion 5b, and the member side length of the second connection member 5 of the first embodiment. Since the shape is substantially the same as the shape of the hole 5c, the description is omitted.

31 is an enlarged view of a portion corresponding to the region C shown in FIG. 1 of the solar cell system according to Embodiment 3. FIG. Next, electrical connection of the solar cell modules 1 adjacent to each other along the short side direction of the solar cell module 1 according to the third embodiment will be described. Here, the solar cell module 1a corresponds to the first solar cell module of the present invention, and the solar cell module 1b corresponds to the second solar cell module.

  Also in the solar cell system 100c according to the third embodiment, the member side long hole 52c and the frame side screw hole 15e of the solar cell module 1 are the upper surface of the solar cell module 1 as in the solar cell system 100 according to the first embodiment. The frame 12 of the solar cell module 1 and the second connecting member 52 are fixed by inserting the screw 6b into the member-side long hole 52c and the frame-side screw hole 15e. Ru. However, in the solar cell system 100c according to the third embodiment, in the second connection member 52, the connection portion 52b of the fixing point is used via which the solar cell module 1 and the second connection member 52 are fixed by the screw 6b. The interval Y is longer than the interval of the solar cell system 100 of the first embodiment.

  Here, assuming that an external force is applied to one of the solar cell modules 1 (for example, the solar cell module 1b) adjacent in the short side direction of the solar cell module 1 to be displaced in the longitudinal direction of the solar cell module 1, one of the solar cells The cell module 1 is displaced relative to the other solar cell module 1 and shear stress is generated in the second connection member 52. The shear stress is in proportion to the shear strain, and the shear strain decreases as the distance Y between the fixing points via the connecting portion increases as long as the displacement with respect to the adjacent solar cell module 1 is the same amount. For this reason, when the displacement amount of the solar cell module 1 is the same, the shear stress generated in the second connection member 52 becomes smaller as the interval Y of the fixing points passing through the connecting portion becomes longer. The distance Y between the fixing points of the connecting portion of the second connecting member 52 of the solar cell system 100c according to the third embodiment is the same as that of the second connecting member 5 of the solar cell system 100 according to the first embodiment. The shear stress generated in the second connection member 52 of the third embodiment is the shear stress generated in the second connection member 5 of the first embodiment because the distance is longer than the distance between the fixing points via the connection portion. It becomes smaller than.

  As described above, in the solar cell system 100 of the third embodiment, stress applied to the first connection member 51 and the second connection member 52 is smaller than that of the solar cell system 100 of the first embodiment, In addition to the effects of the first embodiment, the electrical grounding of the solar cell module can be maintained for a longer period of time.

  Further, in the long side frame 15 of the third embodiment, the end of the holding portion 15b in the longitudinal direction of the long side frame 13 is located closer to the end than the center of the frame side screw hole 15e. Therefore, when viewed from the upper surface of the long side frame 15, the position at which the frame side screw hole 15e is formed is different from the position at which the notch 15f is formed. Can be limited.

  The first connection of the modification of the second embodiment is performed between the member-side elongated holes 51c of the first connection member 51 of the third embodiment and the connecting portion 52b of the second connection member 52. It may be replaced with the spring portion 41 b of the forging member 41 and the spring portion 42 b for the second connecting member 42.

  FIG. 32 is a top view of a solar cell module according to a modification of the first to third embodiments. Moreover, although the solar cell panel 11 of Embodiment 1-3 is rectangular shape and the shape of the solar cell module 1 is also rectangular shape, as shown in FIG. There is a foot trapezoidal shape and the like, and the shape of the solar cell module 60 provided with the solar cell panel 61 and the frame 62 surrounding the periphery of the solar cell panel 61 is also square or trapezoidal. The solar cell module of the solar cell system to which the present invention is applied has a square or trapezoidal shape like the solar cell module 60 if the frame side screw hole 63 for attaching the connection member is formed. But it is good.

  Moreover, although the frame side screw hole 13e is formed in the flange part 13d of the long side frame 13, the solar cell module 1 of Embodiment 1-3 is not limited to this, and the frame side screw hole is a frame The position is not limited as long as it is formed. For example, frame side screw holes may be formed on the surfaces of both ends of the holding portion of the long side frame. Further, instead of the long side frame, frame side screw holes may be formed at both ends of the short side frame.

  Furthermore, although the frame side screw holes 13e and 15e of the solar cell module 1 according to the first to third embodiments are all round holes, the present invention is not limited to this and may be long holes. At this time, the outer diameters of the screws 6, 6a, 6b and 6c are respectively larger than the width in the short direction of the frame side elongated hole.

  Moreover, although the solar cell system of Embodiment 1-3 has eight sheets of solar cell modules 1, not only this but a solar cell system has two or more sheets (two or more sheets) of solar cell modules. Just do it.

  Furthermore, although the solar cell module 1 is supported by the support rack 2 in the solar cell system according to the first to third embodiments, the present invention is not limited thereto. For example, the solar cell module is installed on the roof surface of a building , Other installation methods may be used.

DESCRIPTION OF SYMBOLS 1 solar cell module, 2 support stand, 3 earth wire, 3a earth metal fitting, 3b metal fitting side screw hole, 4 first connecting member, 4c member side long hole, 5 second connecting member, 5a fixing part, 5b Connecting part, 5c member long hole, 6 screw, 6a to 6c screw, 11 solar cell panel, 12 frame, 13 long side frame, 13a wall surface, 13b holding part, 13c bottom part, 13d flange part, 13e frame side screw Hole, 13f notch, 13g Screw hole for frame fixing, 14 short side frame, 15 long side frame, 15a wall, 15b holding part, 15d flange, 15e frame side screw hole, 15f notch , 15g Frame fixing screw hole, 40 connecting member, 40a fixing portion, 40b spring portion, 40c member side round hole, 41 first connecting member, 41a fixing portion, 41b Spring part, 41c member side long hole, 42 second connection member, 42a fixing part, 42b spring part, 42c member side long hole, 51 first connection member, 51c member side long hole, 52 second connection Members, 52a fixing portion, 52b connecting portion, 52c member side long hole, 60 solar cell module, 61 solar cell panel, 62 frame, 63 frame side screw hole, 100 solar cell system, 100a to 100c solar cell system

Claims (14)

A first fixed portion having a long shape;
An elongated second fixing portion extending in parallel with the first fixing portion;
Wherein one end in the longitudinal direction of the first fixing portion and the connecting technique and one end portion in the longitudinal direction of the second fixing portion, and the other longitudinal end portion of the first fixing portion And a connecting part not connecting the other longitudinal end of the second fixing part ,
The first fixing portion has a first elongated hole extending in the longitudinal direction of the first fixing portion, and the second fixing portion is a second extending in the longitudinal direction of the second fixing portion. Have a long hole,
The first fixing portion, the second fixing portion, and the connecting portion have conductivity.
The first fixing portion is fixed to a first solar cell module by a first screw inserted into the first long hole, and the second fixing portion is inserted by a second screw inserted into the second long hole. A fixing portion of the second solar cell module adjacent to the first solar cell module ,
The connection member for a solar cell module, wherein the first fixing portion, the second fixing portion, and the connecting portion are U-shaped when viewed along a direction in which the first screw is inserted .   The connection member for a solar cell module according to claim 1, wherein the connection portion is a spring member which can extend and contract in a direction perpendicular to the longitudinal direction of the first fixing portion. The first elongated hole and the connecting portion are separated because the position of the first fixing portion in the longitudinal direction is not overlapped.
The member for connection of a solar cell module according to claim 1 or 2, wherein the second elongated hole and the connecting portion are separated without overlapping the position in the longitudinal direction of the second fixing portion.   The connection member for a solar cell module according to any one of claims 1 to 3, wherein the connection portion has a convex shape which is raised with respect to the first fixing portion and the second fixing portion. . A first solar cell module having a rectangular first solar cell panel and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell panel When,
A second solar cell panel having a rectangular shape, and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the second solar cell panel; A second solar cell module adjacent to the solar cell module along the longitudinal direction,
A rectangular third solar cell panel, and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the third solar cell panel; A third solar cell module adjacent to the solar cell module along the lateral direction,
A first connecting member having an elongated shape and having first elongated holes and second elongated holes extending in the longitudinal direction of the elongated shape;
An elongated shape, the first fixing portion having a third elongated hole extending in the longitudinal direction of the first fixing portion, and an elongated shape extending in parallel to the first fixing portion, The second fixing portion having a fourth elongated hole extending in the longitudinal direction of the second fixing portion, the longitudinal end of the first fixing portion, and the longitudinal end of the second fixing portion And a second connecting member having a connecting portion connecting the
For the first connection, the first screw inserted into the first long hole makes the longitudinal direction of the first connection member parallel to the longitudinal direction of the first solar cell module A member is fixed to the long side frame of the first solar cell module, and a second screw inserted in the second long hole allows the longitudinal direction of the first connection member to be the second The first connection member is fixed to the long side frame of the second solar cell module so as to be parallel to the longitudinal direction of the solar cell module;
By the third screw inserted in the third elongated hole, the longitudinal direction of the first fixing portion of the second connection member is parallel to the longitudinal direction of the first solar cell module, The first fixing portion of the second connection member is fixed to the long side frame of the first solar cell module, and the fourth screw inserted in the fourth long hole The second fixing portion of the second connecting member is the third fixing member so that the longitudinal direction of the second fixing portion of the second connecting member is parallel to the longitudinal direction of the third solar cell module The solar cell system fixed to the long side frame of the solar cell module.   The solar cell system according to claim 5, wherein the connection portion is a spring member which can extend and contract in a direction perpendicular to the longitudinal direction of the first fixing portion. The third elongated hole and the connecting portion are separated because the position in the longitudinal direction of the first fixing portion does not overlap, and the fourth elongated hole and the connecting portion are separated from each other by the second fixing portion. The solar cell system according to claim 5 or 6, wherein the longitudinal positions of the two do not overlap and are separated.   The solar cell system according to any one of claims 5 to 7, wherein the connection portion has a convex shape which is raised with respect to the first fixing portion and the second fixing portion. The pair of short side frames of the first solar cell module and the pair of long side frames of the first solar cell module include a flange portion protruding to the opposite side to the first solar cell panel, and the second sun The pair of short side frames and the pair of long side frames of the battery module include a flange portion projecting to the opposite side to the second solar cell panel, and the pair of the third solar cell module A short side frame and a pair of long side frames each including a flange portion protruding to the side opposite to the third solar cell panel,
The first connection member is fixed to a flange portion of a long side frame of the first solar cell module, and the first connection member is a long side frame of the second solar cell module. Fixed to the flange,
The first fixing portion of the second connecting member is fixed to the flange portion of the long side frame of the first solar cell module, and the second fixing portion of the second connecting member is The solar cell system according to any one of claims 5 to 8, wherein the solar cell system is fixed to a flange portion of a long side frame of the third solar cell module. A first solar cell module having a rectangular first solar cell panel and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the first solar cell panel When,
A second solar cell panel having a rectangular shape, and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the second solar cell panel; A second solar cell module adjacent along the short direction to the solar cell module,
A rectangular third solar cell panel, and a pair of conductive short side frames and a pair of long side frames surrounding the periphery of the third solar cell panel; A third solar cell module adjacent to the solar cell module along the longitudinal direction,
A first connecting member having an elongated shape and having first elongated holes and second elongated holes extending in the longitudinal direction of the elongated shape;
An elongated shape, the first fixing portion having a third elongated hole extending in the longitudinal direction of the first fixing portion, and an elongated shape extending in parallel to the first fixing portion, The second fixing portion having a fourth elongated hole extending in the longitudinal direction of the second fixing portion, the longitudinal end of the first fixing portion, and the longitudinal end of the second fixing portion And a second connecting member having a connecting portion connecting the
The first connection is performed such that a longitudinal direction of the first connection member is parallel to a lateral direction of the first solar cell module by a first screw inserted into the first long hole. Member is fixed to the short side frame of the first solar cell module, and the second screw inserted in the second elongated hole allows the first connection member to be in the longitudinal direction by the second screw. The first connection member is fixed to the short side frame of the second solar cell module so as to be parallel to the short side direction of the second solar cell module,
By the third screw inserted in the third long hole, the longitudinal direction of the first fixing portion of the second connection member may be parallel to the lateral direction of the first solar cell module The first fixing portion of the second connection member is fixed to the short side frame of the first solar cell module, and the fourth fixing screw is inserted into the fourth elongated hole. The second fixing portion of the second connecting member is the second fixing portion of the second connecting member so that the longitudinal direction of the second fixing portion of the second connecting member is parallel to the short direction of the third solar cell module. The solar cell system fixed to the short side frame of a 3rd solar cell module.   The solar cell system according to claim 10, wherein the connecting portion is a spring member which can extend and contract in a direction perpendicular to the longitudinal direction of the first fixing portion. The third elongated hole and the connecting portion are separated because the position in the longitudinal direction of the first fixing portion does not overlap, and the fourth elongated hole and the connecting portion are separated from each other by the second fixing portion. The solar cell system according to claim 10, wherein the longitudinal positions of the two do not overlap and are separated.   The solar cell system according to any one of claims 10 to 12, wherein the connection portion has a convex shape which is raised with respect to the first fixing portion and the second fixing portion. The pair of short side frames of the first solar cell module and the pair of long side frames of the first solar cell module include a flange portion protruding to the opposite side to the first solar cell panel, and the second sun The pair of short side frames and the pair of long side frames of the battery module include a flange portion projecting to the opposite side to the second solar cell panel, and the pair of the third solar cell module A short side frame and a pair of long side frames each including a flange portion protruding to the side opposite to the third solar cell panel,
The first connection member is fixed to a flange portion of a short side frame of the first solar cell module, and the first connection member is a short side frame of the second solar cell module. Fixed to the flange,
The first fixing portion of the second connection member is fixed to the flange portion of the short side frame of the first solar cell module, and the second fixing portion of the second connection member is The solar cell system according to any one of claims 10 to 13, wherein the solar cell system is fixed to a flange portion of a short side frame of the third solar cell module.

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