JP2010212418A - Solar battery module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a solar battery module that is assembled easily and accurately and keeps a side face portion of a panel hermetic and allows easy mounting and demounting of the panel. <P>SOLUTION: A solar battery module includes a solar battery panel 3, a first frame 1, a second frame 6, and a side face sealing material 5. The solar battery panel 3 is held between the first frame 1 and the second frame 6, with a first sealing material 2 put between the panel and the first frame 1 and a second sealing material 4 put between the panel and the second frame 6. The side face sealing material 5 is formed of an elastic material, and is fastened to either a first side face portion 1b of the first frame 1 or a second side face portion 6b of the second frame. When the second side face portion 6b is inserted into the first side face portion 1b, the side face sealing material is put in a recess formed in the other of the second side face portion 6b and the second side face portion 1b to shield between the two side face portions and restrict the inserting position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a solar cell module having a frame at the periphery of a solar cell panel.

  As a system using natural energy, use of a solar cell system that converts light energy such as sunlight into electric energy using a photoelectric conversion material such as a semiconductor material has been increasing in recent years. The solar cell system is suitable for electrical use, such as a photoelectric conversion device that converts light energy into electrical energy, such as a solar cell module, and the obtained current is converted into alternating current of an appropriate voltage using an electric circuit such as an inverter. It is mainly composed of an electrical conversion device that performs conversion.

  A solar cell module collects electricity converted by a solar cell panel in which solar cell elements made of a semiconductor material such as silicon are arranged, a frame surrounding the periphery of the solar cell panel, and the solar cell element into an electrical conversion device. Consists of wiring that leads. Moreover, the roof structure of a house may be comprised with a solar cell panel itself, without having a flame | frame for every panel.

  As a solar cell panel used outdoors, a solar cell panel in which solar cell elements are arranged on a transparent substrate such as glass and light is incident from the transparent substrate side is often used. A protective sheet is affixed to the back side of the transparent substrate, and the solar cell element is sandwiched and sealed between the substrate and the protective sheet. The shape of the panel is generally rectangular. The frame is attached to the peripheral end of the solar cell panel to reinforce the peripheral end and is used to support the panel.

  In many cases, solar cell modules are installed on a gantry with an appropriate angle of inclination so that sunlight can be received efficiently. This frame is installed and fixed on the roof of the building or on the ground. Frames are often fixed to these platforms.

  For example, Patent Document 1 discloses a solar cell module in which a divided frame having a substantially U-shaped groove is fitted on each side around a rectangular solar cell panel. The frame is divided for each side, and the four divided frames are fastened at the corners of the panel. The groove is filled with a fixed sealing material.

  Patent Document 2 discloses a solar cell module having a structure in which a solar cell panel is accommodated between a box-like lower frame and an upper frame. The solar cell panel is supported by a stepped ledge on the bottom side of the lower frame. A sealant is provided between the gap between the lower part of the side of the solar cell panel and the lower frame, and between the gap and the upper frame. A fluid silicone resin is used as the sealant.

JP 2003-133573 A JP-A-2-21670

  After the production of the solar cell module, it may be necessary to perform a demounting operation such as removing only the solar cell panel portion from the frame and reattaching it. In that case, in the frame divided | segmented for every edge | side like patent document 1, it is necessary to disassemble | fasten a fastening part and to disassemble | disassemble a flame | frame for each edge | side, and an operation | work becomes very complicated. Moreover, in the method of Patent Document 2, although the frame itself is relatively easy to divide, a sealing material is inserted into the gap between the side surface and the lower frame for sealing the side surface of the solar cell panel, so that the detaching operation is easy. Not. Further, there is a problem that a gap between the panel position and the height occurs after desorption, and a gap is easily generated between the sealant and the side wall of the panel or the lower frame. In order to prevent this, it is necessary to precisely adjust the position of the panel and the frame and refill the fluid sealant.

  Therefore, an object of the present invention is to realize a solar cell module that is easy to assemble with high accuracy, keeps the side surface portion of the panel airtight, and facilitates detachment of the panel.

  The solar cell module of the present invention is a solar cell module including a plate-like solar cell panel having a light receiving surface on one main surface, a first frame, a second frame, and a side seal material. The first frame includes a first main surface portion covering the periphery of the light-receiving surface of the solar cell panel via the first seal material, and a first side surface portion surrounding the outside of the side portion of the solar cell panel continuously to the first main surface portion. Have. The second frame has a second main surface portion that covers the periphery of the back surface of the solar cell panel via the second seal material, and a second side surface portion that is continuous with the second main surface portion, and the second side surface portion is the first frame portion. The solar cell panel is sandwiched between the first side surface portion and the first frame. The side sealing material is made of an elastic material, and is fixed to one of the first side surface portion and the second side surface portion. When the second side surface portion is inserted into the first side surface portion, the second side surface portion and the first side surface portion are made. It fits into a groove formed on the other side of the side surface, seals between both side surfaces, and restricts the insertion position.

  The solar cell module of the present invention has a structure in which a solar cell panel is sandwiched between a first frame and a second frame. Sealing material is sealed between the first frame and the light receiving surface of the solar cell panel and between the second frame and the back surface of the solar cell panel. The first side surface portion of the first frame and the second side surface portion of the second frame are sealed with a side surface sealing material made of an elastic material. With these structures, the side surface of the solar cell panel is hermetically sealed. In addition, since there is a groove on at least one of the opposing surfaces of the second side surface portion and the first side surface portion, and the side surface sealing material is fitted into the groove, the position between the frames is regulated, and the solar cell is accurate. The assembly work of the module becomes easy, and the reattachment and removal work of the panel becomes easy.

It is the perspective view which looked at the solar cell module of this Embodiment 1 from the light-receiving surface side. It is a disassembled perspective view of the solar cell module of the first embodiment. It is the disassembled perspective view which further decomposed | disassembled some solar cell modules of this Embodiment 1. FIG. It is a fragmentary sectional view of the solar cell module of the first embodiment. It is sectional drawing which shows the assembly process of the solar cell module of this Embodiment 1. FIG. It is a fragmentary sectional view of the solar cell module of the first embodiment. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 2. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 3. It is a top view which shows the partial structure of the solar cell module of this Embodiment 3. It is a bottom view which shows the partial structure of the solar cell module of this Embodiment 3. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 4. It is a top view which shows the partial structure of the solar cell module of this Embodiment 4. It is a bottom view which shows the partial structure of the solar cell module of this Embodiment 4. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 5. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 6. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 7. It is a fragmentary sectional view which shows the structure of the solar cell module of this Embodiment 8. It is a disassembled perspective view which shows the application example of the solar cell module of this Embodiment 9. FIG.

  Below, embodiment of the solar cell module of this invention is described using drawing. It should be noted that a detailed description of a configuration common to the configuration described in one embodiment is omitted in the other embodiments.

<Embodiment 1. >
FIG. 1 is a perspective view of the solar cell module according to Embodiment 1 viewed from the light receiving surface side. The solar cell module of Embodiment 1 has a rectangular solar cell panel 3 and a first frame 1 that surrounds the outer periphery thereof. The solar cell panel 3 receives light from sunlight S and converts it into electricity. The first frame 1 surrounds and protects the outer periphery of the solar cell panel 3. Further, the first frame 1 is continuous from the outer periphery of the first main surface portion 1a and the first main surface portion 1a covering the periphery of the light receiving surface of the solar cell panel 3 over the entire circumference, and is substantially perpendicular to the first main surface portion 1a. It has the 1st side part 1b extended in the back surface direction of the battery panel 3, and enclosing the outer side of the side surface of the solar cell panel 3. FIG. The first main surface portion 1 a has a first opening 1 w that exposes the light receiving surface of the solar cell panel 3. A screw 7 for fastening a second frame 6 and a first frame 1 described later is attached to the lower portion of the first side surface portion 1b.

  FIG. 2 is an exploded perspective view of the solar cell module according to the first embodiment. The solar cell module has a structure in which the first frame 1, the first seal material 2, the solar cell panel 3, the second seal material 4, and the second frame 6 are stacked in order from the light receiving surface side of the solar cell panel 3. A side seal material 5 made of an elastic material is fixed to a side portion of the second frame 6. The side part of the second frame 6 and the side seal material 5 enter the inside of the side part of the first frame 1, and the first frame 1 and the second frame 6 constitute a box-shaped frame. The solar cell panel 3 is sandwiched between the first frame 1 and the second frame 6 through the first sealing material 2 and the second sealing material 4 in the box-shaped frame. The first frame 1 and the second frame 6 are preferably made of a material having high durability, such as a stainless alloy or an aluminum alloy. The first frame 1 and the second frame 6 have shapes in which the first main surface portion 1a, the second main surface portion 6a, the first side surface portions 1b, and the second side surface portions 6b surround the entire circumference of the side surface of the solar cell panel 3. If it is, it may be a material molded integrally or a material produced by combining a plurality of members.

  The solar cell panel 3 has a plate-like structure having a light receiving surface on one main surface, a back surface on the other main surface, and side portions on the periphery of the light receiving surface and the back surface. As the solar cell panel 3, one having a transparent glass substrate on the light receiving surface side and a photoelectric conversion element made of a semiconductor material on the back surface side can be used. As the photoelectric conversion element, for example, a thin film mainly composed of silicon or a material using a polycrystalline silicon substrate can be used. These photoelectric conversion elements are sealed by being sandwiched between a glass substrate and a protective sheet on the back surface side in order to prevent deterioration due to the influence of external moisture or moisture. In addition, although not shown in the figure, wiring for taking out the converted electricity to the outside is attached to the back side of the solar cell panel 3.

  The first sealing material 2 and the second sealing material 4 are members made of an elastic material that seals the periphery of the light receiving surface and the back surface of the solar cell panel 3 over the entire circumference, for example, a gasket made of synthetic rubber. . The outer periphery of the first sealing member 2 or the second sealing member 4 is slightly smaller than the outer periphery of the solar cell panel 3 and the cross-sectional shape may be circular, but a flat rectangle or ellipse is preferable.

  FIG. 3 is an exploded perspective view in which a part of the solar cell module of the first embodiment is further disassembled, and is a view showing the second frame 6 and the side seal material 5 in FIG. 2 separately. The second frame 6 has a second main surface portion 6a that covers the entire periphery of the back surface of the solar cell panel 3, and extends substantially vertically from the outer periphery of the second main surface portion 6a, and is positioned outside the side surface of the solar cell panel 3. Side surface portion 6b. In the first embodiment, the second side surface portion 6b extends continuously from the outer periphery of the second main surface portion 6a to the light receiving surface side. A second groove 6c is formed on the entire circumference of the second side surface 6b. The side seal material 5 is fitted and fixed in the second groove 6c. The side sealing material 5 has a larger thickness than the depth of the second groove 6c so that the outer surface of the side sealing material 5 protrudes from the outer surface of the second side 6b. The side sealing material 5 is a member made of an elastic material, and is a gasket made of, for example, synthetic rubber. There is a second opening 6w inside the second main surface portion 6a. The wiring of the solar cell panel 3 is connected to other solar cell modules and electrical converters through the second opening 6w. A screw hole 6h is formed on the back side of the second groove 6c of the second side surface 6b.

  The outer surface of the second side surface portion 6b is made smaller than the inner surface of the first side surface portion 1b so that it can be inserted into the inner surface of the first side surface portion 1b of the first frame 1. Moreover, the outer surface of the side surface sealing material 5 fixed to the second groove portion 6c is manufactured to be slightly larger than the inner surface of the first side surface portion 1b.

  The side sealing material 5 can be fixed to the groove 6c by, for example, pushing a member that has been previously formed into a ring shape according to the groove shape into the groove 6c while expanding the side 6b. Alternatively, one or a plurality of linear elastic materials may be fitted into the groove 6c so that there are almost no joints between the ends. The side seal material 5 and the groove 6c may be bonded with an adhesive or the like.

  FIG. 4 is a partial cross-sectional view of the solar cell module according to the first embodiment, and is a cross-sectional view seen when the periphery of the solar cell panel 3 is cut in a direction perpendicular to the light receiving surface and parallel to the first side surface portion 1b. . 4 is a cross-sectional view of the portion including the screw 7 of FIG. 1. The first frame 1 is formed with a screw hole 1h for inserting the screw 7, and the second frame 6 is formed with a screw hole 6h for fastening the screw. ing.

  In the solar cell panel 3, for example, as shown in the figure, a power generation layer 3b such as thin film Si is directly formed on a light-transmitting substrate 3a such as a glass substrate, and is made of a thermoplastic resin such as EVA (ethylene vinyl acetate). The filler 3c is bonded to the back sheet 3d having weather resistance by thermocompression bonding with a laminate. The figure shows a case where sunlight S is incident from the translucent substrate 3a side.

  As shown in the figure, the second side surface portion 6 b of the second frame 6 is located outside the side surface 3 s when viewed from the center side of the solar cell panel 3. The second sealing material 4 is sandwiched between the second main surface portion 6 a of the second frame 6 and the back surface 3 u of the solar cell panel 3. The side seal material 5 is fitted in the second groove 6c on the outer surface side of the second side surface 6b. The side sealing material 5 has a portion protruding from the outer surface of the second side surface portion 6b. In the figure, the side sealing material 5 has a circular cross section, but the present invention is not limited to this. For example, the cross section may be an ellipse, a trapezoid, a rectangle, or the like, and the shape of the second groove 6c is also in accordance with the shape. What is necessary is just to make it an appropriate shape. Further, it is desirable that the portion protruding from the second side surface portion 6b has a shape in which the width of the tip becomes narrower in the protruding direction from the root.

  A first sealing material 2 is sandwiched between the first main surface portion 1 a of the first frame 1 and the light receiving surface 3 t of the solar cell panel 3. The first side surface portion 1b of the first frame 1 is located outside the second side surface portion 6b. On the inner surface side of the first side surface portion 1b, a first groove portion 1c is formed at a position facing the second groove portion 6c of the second side surface portion 6b. A portion of the side surface sealing material 5 that protrudes from the outer surface of the second side surface portion 6b is fitted in the first groove portion 1c. Since the side sealing material 5 is provided on the entire circumference of the first side surface portion 1b, the first groove portion 1c is also formed on the entire inner surface of the first side surface portion 1b. The inner surface of the first side surface portion 1b is larger than the outer surface of the second side surface portion 6b, but the main portion excluding the first groove portion 1c is smaller than the most protruding portion of the side surface sealing material 5.

  If the first sealing material 2 and the second sealing material 4 have the same shape and the solar cell panel 3 is sandwiched from both sides at the same position from the side, the stress applied to the solar cell panel 3 is well balanced, and the same member is prepared. This is also preferable for production. However, it is not essential that the positions of the first sealing material 2 and the second sealing material 4 are equal from the end of the solar cell panel 3.

  The cross-sectional shape of the first groove portion 1 c may be an appropriate shape corresponding to the cross-sectional shape of the side surface sealing material 5. At least one of the back side surface and the main surface side surface of the protruding portion of the side seal material 5 is in contact with the first groove 1c. It is further desirable that the back side surface and the main surface side surface of the protruding portion of the side seal material 5 are in contact with the inner surface of the first groove 1c. For example, the figure shows a case where the protruding portion of the side sealing material 5 has a semicircular cross section, and the shape of the first groove 1c is a trapezoid whose width narrows from the inner surface side to the outer surface side of the first side surface portion 1b. is there. The side sealing material 5 is in contact with both the slope on the light receiving surface side and the slope on the back surface side of the trapezoidal groove. Further, the side sealing material 5 is in contact with the bottom surface of the trapezoid, and the side surface is sealed over the entire circumference by this surface. In this way, a surface that continuously contacts the entire circumference is provided. The shape of the first groove portion 1c may be the same shape as the protruding portion of the side surface sealing material 5, for example, in the case of the side surface sealing material 5 in the figure, it may be a semicircular shape having a substantially similar cross section.

  Next, a method for assembling the solar cell module according to Embodiment 1 will be described. FIG. 5 is a cross-sectional view showing the assembly process of the solar cell module of the first embodiment, and shows the same position as the cross-sectional view of FIG. In the assembly process, first, as shown in FIG. 5A, the second sealing material 4 is arranged on the second main surface portion 6a of the second frame 6, the solar cell panel 3 is placed thereon, and further the solar cell. The first sealing material 2 is placed around the light receiving surface of the panel 3, and the first frame 1 is placed on the second frame 6 from the direction perpendicular to the light receiving surface. Since the second side surface portion 6b is smaller than the first side surface portion 1b, the second side surface portion 6b can be easily inserted. However, when the inner surface of the first side surface portion 1b contacts the side surface sealing material 5, the insertion resistance increases. When the second side surface portion 6b is further pushed into the first side surface portion 1b, the side surface sealing material 5 made of an elastic material is compressed and elastically deformed as shown in FIG. 5B. When further pressed, the first main surface portion 1a of the first frame 1 comes into contact with the first sealing material 2, and the first sealing material 2 made of an elastic material is deformed. Then, as shown in FIG. 5C, when the position of the first groove portion 1c in the first side surface portion 1b becomes a position facing the side surface sealing material 5, the deformed side surface sealing material 5 is before compression deformation. It is deformed to return to its original shape and fits into the first groove 1c. At this time, the side sealing material 5 contacts the inner surface of the first groove 1c. Thus, when the 1st groove part 1c reaches the side surface sealing material 5, and is fitted, the insertion position of the 2nd side part 6b is controlled. Thereafter, a screw is inserted into the screw hole to fasten the first frame 1 and the second frame 6.

  Since the side sealing material 5 is in contact with the first frame 1 and the second frame 6 over the entire circumference, the side sealing material 5 has an action of sealing between the side portions. Further, the first frame 1 and the light receiving surface of the solar cell panel 3 are sealed with a first sealing material 2, and the second frame 6 and the back surface of the solar cell panel 3 are sealed with a second sealing material 4. As a result, the space surrounded by the surfaces of the first frame 1 and the second frame 6 and the first sealing material 2, the second sealing material 4, and the side surface sealing material 5 becomes a sealed space, and a solar cell panel is formed in this space portion. Since the side surface 3 is held, it is possible to prevent deterioration due to humidity, moisture, etc. generated from the side surface of the panel.

  In addition, since the side sealing material 5 has at least one of the back side surface and the main surface side surface of the projecting portion in contact with the first groove 1c, not only the sealing function but also the effect of regulating the mutual position is provided. It also has.

  FIG. 6 is a partial cross-sectional view of the solar cell module according to the first embodiment, and is a diagram for explaining the position regulation effect by the side surface sealing material 5 and the first groove portion 1c. In the figure, as a typical example, a case where the side sealing material 5 has a circular cross section and the first groove 1c has a trapezoidal cross section will be described. The arrow m in the figure indicates the direction in which the first frame 1 and the second frame 6 move relatively, and the distance between the first main surface portion 1a of the first frame 1 and the second main surface portion 6a of the second frame 6 approaches. Indicates moving in the direction of moving or moving away.

  Since the first sealing material 2 is sandwiched between the first main surface portion 1a and the light receiving surface 3t of the solar cell panel when the side surface sealing material 5 is fitted in the first groove 1c, the first sealing material 2 is compressed and deformed. The sealing material 2 applies a force in a direction in which the distance between the first main surface portion 1a and the second main surface portion 6a is separated. On the other hand, the surface of the portion 5b farthest from the first main surface portion 1a with respect to the most protruding portion of the protruding portions of the side surface sealing material 5 is far from the first main surface portion 1a of the inner surface of the first groove portion 1c. It contacts the slope 1cb on the side. This contacting structure has an action of locking so that the distance between the first main surface portion 1a and the second main surface portion 6a is not separated, so that the distance between both frames is maintained. As a result, even if the first frame 1 is not continuously pushed into the second frame 6, there is little positional deviation, and high-precision assembly is facilitated. For example, if the height of the screw hole and the height of the groove are matched in the first frame 1 and the second frame 6, when the first and second frames are fastened with screws, It is not necessary to adjust the mutual position between frames so that the positions match.

  Moreover, the surface of the part 5a close | similar to the 1st main surface part 1a among the protrusion parts of the side surface sealing material 5 is in contact with the slope 1ca near the 1st main surface part 1a among the inner surfaces of the 1st groove part 1c. This contacting structure acts as a stopper that prevents the distance between the first main surface portion 1a and the second main surface portion 6a from becoming too close. As a result, it becomes easy to stop the pushing amount of the first frame 1 by an appropriate amount.

  Further, as shown in the figure, the surface 1 cc corresponding to the bottom surface of the trapezoidal cross section of the first groove 1 c is in contact with the most protruding portion of the side seal material 5. Although this portion does not have a great effect of restricting the position, the effect of sealing over the entire circumference can be enhanced, so that it is desirable that the structure be in contact. In the above description, the first groove portion 1c has a trapezoidal cross section, but the cross section may be a rectangle or a circle, or a groove having a curved surface.

  The screws 7 are installed in the vicinity of the side edges of the first and second frames to fasten both the frames, thereby preventing the frames from falling off and improving the strength. In the first embodiment, the screw 7 is attached in a direction substantially perpendicular to the surfaces of the first side surface portion 1b and the second side surface portion 6b, closes the distance therebetween, and compresses the side surface sealing material 5 sandwiched between the two. Thus, the effect of sealing can be enhanced.

  In the first embodiment, the side seal material 5 is fixed to the second frame 6 by fitting the side seal material 5 into the groove, so that the side seal material 5 can be easily replaced. Thus, when fixing the side surface sealing material 5 with a groove | channel, it is more preferable to make the depth of the groove | channel of the 2nd groove part 6c larger than the protrusion height of 5a, 5b which the side surface sealing material 5 protrudes. As a result, the fixing portion 5c of the side surface sealing material 5 becomes large, and the side surface sealing material 5 can be prevented from being displaced from the second groove portion 6c when the first frame 1 is pushed.

  The side seal material 5 is fixed on the second frame 6 side. However, the side seal material 5 is fixed on the first frame 1 side, and a groove in which the protruding portion of the side seal material 5 fits is provided on the opposite second frame 6 side. May be. Further, the groove and the side surface sealing material 5 are not limited to a pair, and a plurality of pairs may be fitted simultaneously.

  In addition, the first sealing material 2 and the second sealing material 4 described above are cases of gaskets formed in advance. However, the first sealing material 2 and the second sealing material 4 are made of a coating material and are cured after the first frame 1 and the second frame 6 are fastened. It may be. Even in this case, the effect of facilitating the assembly can be obtained in the same manner by sealing between the first frame 1 and the second frame 6 of the first embodiment and maintaining the relative positions of the two companies with high accuracy. it can.

  Moreover, the solar cell module of Embodiment 1 can be removed by pulling up the first frame 1 from the second frame 6 in a direction perpendicular to the light receiving surface, and the solar cell panel 3 can be easily taken out. Therefore, once the module is assembled, it is possible to easily remove only the solar cell panel 3 from the frame again. Furthermore, even when the solar cell panel 3 is attached again, it can be easily assembled with high accuracy.

  As described above, the solar cell module according to Embodiment 1 includes the solar cell panel 3, the first frame 1, the second frame 6, and the side surface sealing material 5. The solar cell panel 3 has a plate shape having a light receiving surface 3t on one main surface, a back surface 3u on the other main surface, and side portions 3s on the periphery of the light receiving surface and the back surface. The first frame 1 has a first main surface portion 1a covering the periphery of the light receiving surface of the solar cell panel 3 via a first sealing material 2 made of an elastic material, and a first side surface portion 1b surrounding the outer side of the solar cell panel 3. And have. The second frame 6 has a second main surface portion 6a that covers the periphery of the back surface of the solar cell panel 3 via a second sealing material 4 made of an elastic material, and a second side surface portion 6b whose outer surface is located outside the side portion. When the second side surface portion 6b is inserted into the first side surface portion 1b of the first frame 1, the solar cell panel 3 is sandwiched between the first frame 1 and the second side surface portion 6b. The side sealing material 5 is made of an elastic material, fixed to one of the first side surface portion 1b and the second side surface portion 6b, and when the second side surface portion 6b is inserted into the first side surface portion 1b, The second side surface portion 6b and the first side surface portion 1b are fitted into a groove formed on the other side to seal between both side surface portions and restrict the insertion position. For this reason, the side surface of the solar cell panel 3 is hermetically sealed, and the water stoppage can be maintained. In addition, the position between the frames is restricted, and the assembly work of the solar cell module with high accuracy is facilitated, and the reattachment / removal work of the panel is facilitated.

<Embodiment 2. >
FIG. 7 is a partial cross-sectional view showing the structure of the solar cell module according to the second embodiment, and shows the same portion as the cross-sectional view illustrating the assembly of FIG. 5A according to the first embodiment. The solar cell module according to the second embodiment is different from the first embodiment in the structure for fixing each sealing material to the frame. The 1st main surface part 1a of the 1st flame | frame 1 has the groove | channel 1g in the part facing the light-receiving surface of a solar cell panel, and the 1st sealing material 2 fits in this groove | channel 1g, and is fixed. Fixing may use an adhesive. On the other hand, the 2nd main surface part 6a of the 2nd frame 6 has the groove | channel 6g in the part facing the back surface of a solar cell panel, and the 2nd sealing material 4 is inserted and fixed to this groove | channel 6g. Fixing may or may not use an adhesive.

  The positions of the sealing materials 2 and 4 are regulated by the grooves 1g and 6g, and no positional deviation occurs, so that accurate assembly is facilitated. Moreover, since each sealing material is being fixed to the flame | frame, the workability | operativity at the time of detaching | removing the solar cell panel 3 from a flame | frame is especially excellent.

  In the solar cell module of the second embodiment, the side surface sealing material 5 is fixed to the inner surface side of the first side surface portion 1b of the first frame 1, and the outer surface side of the second side surface portion 6b of the second frame 6 facing each other. The 2nd groove part 6c was provided in this. The second groove 6c has a semicircular cross section. Even if it is such a structure, a highly accurate module can be implement | achieved because the side surface sealing material 5 fits into the 2nd groove part 6c.

<Embodiment 3. >
FIG. 8 is a partial cross-sectional view showing the structure of the solar cell module according to the third embodiment, and is a cross-sectional view at the same position as in FIG. 4 according to the first embodiment. FIG. 9 is a top view showing a partial structure of the solar cell module according to Embodiment 3, and is a view seen from above the light receiving surface after the solar cell panel 3 is placed on the second frame 6. FIG. 10 is a bottom view showing a partial structure of the solar cell module according to Embodiment 3, and is a view of the first frame 1 covering FIG. 9 as seen from the back side. FIG. 8 is a cross-sectional view of a module formed by combining the dotted line positions L of FIGS. 9 and 10.

  Compared with the solar cell module of the first embodiment, the solar cell module of the second embodiment has the inner surface side of the first side surface portion 1b of the first frame 1 and the second side surface portion 6b of the second frame 6 facing each other. The outer surface side is different in that the corners are composed of curved surfaces. Further, when the rectangular solar cell panel 3 is accommodated in the second frame 6 having curved corners, a gap is formed between the inner surface of the second side surface portion 6b and the side surface 3s of the solar cell panel 3, so that this gap portion is filled. Thus, the spacer 8 is installed.

  Since the corners of the frame are curved, the corners of the side seal material 5 are also curved. For this reason, when the first frame 1 is pushed into the second frame 6, the compression deformation of the side seal material 5 at the corner becomes a smooth deformation, and the pushing operation becomes easy. Further, it is possible to prevent the side seal material 5 from being deteriorated or damaged due to the repeated attachment and detachment of the frame.

  The spacer 8 need only be formed on a part of the side surface 3s of the solar cell panel 3 as shown in the figure. The spacer 8 fixes the position of the solar cell panel 3 installed in the second frame 6 with high accuracy. The spacer 8 may be an elastic material such as synthetic rubber. The spacer 8 may be made of an adhesive material, but it is desirable not to adhere to the side surface 3s of the solar cell panel 3 in order to facilitate re-detachment of the solar cell panel 3 from the frame.

<Embodiment 4. >
FIG. 11 is a partial cross-sectional view showing the structure of the solar cell module according to the fourth embodiment. 12 is a top view showing a partial structure of the solar cell module according to the fourth embodiment, and FIG. 13 is a bottom view showing a partial structure of the solar cell module according to the fourth embodiment. The solar cell module of the fourth embodiment has substantially the same shape as that of the third embodiment, but differs in that the first frame 1 and the second frame 6 are composed of a plurality of members. 11 shows FIG. 8 of the third embodiment, FIG. 12 shows FIG. 9 of the third embodiment, and FIG. 13 shows the same parts as FIG. 10 of the third embodiment.

  The first frame 1 and the second frame 6 of the solar cell module according to Embodiment 4 have a main surface portion and a side portion of a metal portion having excellent durability, such as stainless steel, and the opposite sides thereof. It is formed by sticking a part made of resin or the like to the part. The first side surface portion 1b of the first frame 1 has a portion 1p molded on the inner surface side of 1q continuous with the first main surface portion 1a. The second side surface portion 6b of the second frame 6 has a portion 6p formed by molding on the outer surface side of 6q continuous with the second main surface portion 6a.

  As shown in FIG. 12, the 6q portion continuous to the second main surface portion 6a is formed in a rectangular shape having a substantially right angle, and the corner of the second side surface portion 6b becomes a curved surface by 6p attached to the outer surface thereof. The second groove 6c is formed in the mold part 6p. The mold part may be integrally formed on the entire periphery, or may be a part in which a plurality of divided parts are bonded to the outer periphery of 6q so that there is no seam.

  Similarly, as shown in FIG. 13, the 1q portion continuous to the first main surface portion 1a is formed in a rectangle, and the first side surface portion 1b has a curved surface by 1p attached to the inner surface thereof. The first groove 1c is formed in the mold part 1p. The mold part may be integrally formed on the entire periphery, but may be a part in which a plurality of divided parts are seamlessly bonded to the inner periphery of 1q.

  As described above, since the frame is formed using the mold parts 1p and 6p made of a material such as resin, the curved surface portion and the groove portion can be easily formed. In addition, the surface exposed mainly to the outside may be formed of a metal having excellent durability.

<Embodiment 5. >
FIG. 14 is a partial cross-sectional view showing the structure of the solar cell module according to Embodiment 5, and is a cross-sectional view at the same position as in FIG. 4 of Embodiment 1. In the solar cell module of Embodiment 4, the solar cell 3 having a gap of, for example, several millimeters between the side surface 3s of the solar cell 3 and the end of the back sheet 3d on the back surface is used. The second sealing material 4 between the second frame 6 and the back surface 3u has a structure that is pressed against both the end portion of the back sheet 3d and the translucent substrate 3a. Thereby, it is possible to further improve the water stoppage of the gap between the end portion of the back sheet 3d and the translucent substrate 3a.

<Embodiment 6. >
FIG. 15 is a partial cross-sectional view showing the structure of the solar cell module of the sixth embodiment, and shows the same portion as the cross-sectional view illustrating the assembly of FIG. 5A of the first embodiment. The solar cell module of Embodiment 6 has a structure in which the side surface sealing material 5 is attached to the outer surface of the second side surface portion 6b of the second frame 6. An adhesive may be used for attaching the side sealing material 5. The cross section of the side sealing material 5 may be a semicircular shape as shown in the figure, for example. The side seal material 5 protruding from the outer surface of the second side surface portion 6b is fitted in the first groove portion 1c of the first side surface portion 1b of the first frame 1 and can be assembled with high accuracy in the same manner as in the first embodiment. is there. In the sixth embodiment, it is not necessary to form the second groove portion 6c in the second side surface portion 6b, so that the frame can be easily manufactured. Further, since the adhesive is fixed, the side seal material 5 is not displaced.

<Embodiment 7. >
FIG. 16 is a partial cross-sectional view showing the structure of the solar cell module according to the seventh embodiment, and is a cross-sectional view at the same position as FIG. 4 in the first embodiment. The structure described in the above embodiment and the solar cell module of the seventh embodiment are the first side surface portion 1b of the first frame and the second side surface portion 6b of the second frame 6 on the back surface of the solar cell panel 3. It differs in that it has a portion 13 that extends to the opposite side of the light receiving surface from the side. As shown in the figure, the extending portion 13 may have a structure extending to the back side from the second main surface portion 1a. The side surface sealing material 5 sandwiched between the first side surface portion 1b and the second side surface portion 6b is installed in the extending portion 13.

  The inner surface of the first side surface portion 1b and the outer surface of the second side surface portion 6b need to be outside the side surface 3s of the solar cell panel 3, in other words, on the side far from the center of the solar cell panel. The inner surface side of the second side surface portion 6b may be inside the side surface 3s of the solar cell panel 3 as shown in the figure. Further, the screw 7 is also installed in the extended portion 13, and its position is further rearward than the position where the side surface sealing material 5 is installed as seen from the incident direction of sunlight. The screw 7 may pass through the second side surface portion 6b. Accordingly, the second side surface portion 6b may be thin enough to allow the screw 7 to pass therethrough.

  As described above, the first side surface portion 1b and the second side surface portion 6b have the portion 13 that extends from the back surface of the solar cell panel 3 to the side opposite to the light receiving surface, and the frame is fastened at the portion. Therefore, the inner surface side of the second side surface portion 6b can be set inside the side surface 3s of the solar cell panel 3. For this reason, the width of the frame outside the side surface 3s of the solar cell panel 3 can be reduced.

  Further, in the seventh embodiment, the side seal material 5 sandwiched between the first side surface portion 1b and the second side surface portion 6b by the extending portion 13 is provided between the frames as in the above-described embodiment. Since the position of is controlled, accurate assembly becomes easy.

  In the figure, the groove portions 1c and 6c formed in the first side surface portion 1b and the second side surface portion 6b for fixing and fitting the side surface sealing material 5 are cross-sectional views. Instead of this, the refracted portions may be used as grooves by bending the respective surfaces of the first side surface portion 1b and the second side surface portion 6b.

<Eighth embodiment. >
FIG. 17 is a partial cross-sectional view showing the structure of the solar cell module of the eighth embodiment, which is substantially the same structure as the solar cell module of the seventh embodiment, but of the second main surface portion 6a of the second frame 6. The difference is that a small convex portion 15 is provided in the peripheral portion on the light receiving surface side. By positioning the convex portion 15 in contact with the side surface 3s end of the solar cell panel 3, the positioning of the panel during assembly is simplified. In particular, when the solar cell panel 3 is replaced while the frame is tilted from the installed solar cell module, the solar cell panel 3 can be held by the convex portion 15, so that the operation can be greatly simplified. In addition, the shape of the convex part 15 should just protrude upwards, and it is desirable to carry out the round process so that the edge part of a solar cell panel may not be damaged.

<Embodiment 9. >
FIG. 18 is an exploded perspective view showing an application example of the solar cell module of the ninth embodiment. In the solar cell module of the ninth embodiment, the frame portion is held by the gantry 20. The configuration of the solar cell module itself is similar to the configuration described above, but has a connecting portion with the gantry 20 in a part of the second frame. The figure shows a case where the second frame 6 similar to that of the eighth embodiment is used.

  The solar cell module of Embodiment 9 can detach the solar cell panel 3 while the second frame 6 and the gantry 20 are connected. As shown in the figure, the first frame 1, the first sealing material 2, and the solar cell panel 3 can be removed in order, and can be easily attached in the reverse order. Since the solar cell module of the ninth embodiment has a structure that fits between the first frame 1 and the second frame 6 as described above, it is excellent in accuracy and reproducibility of the mounting position. Further, when the frame having the portion 13 extending on the opposite side to the light receiving surface shown in the seventh and eighth embodiments is used and the mount 20 is connected to the extending portion 13, the light receiving efficiency of the module is improved. Can be improved. The gantry 20 and the second frame 6 may be integrally formed. Further, the second frame 6 may be fixed to or integrated with the roof member or wall member of the building instead of the gantry 20.

  Note that a solar cell module may be configured by combining part of the configuration described in one embodiment above with the configuration described in another embodiment.

  The solar cell module of the present invention is easy to assemble, and it is possible to realize a solar cell module in which the side surface of the panel is kept airtight and the panel can be easily detached.

DESCRIPTION OF SYMBOLS 1 1st frame, 1a 1st main surface part, 1b 1st side surface part, 1c 1st groove part, 1h Screw hole, 2nd 1st sealing material, 3 Solar cell panel, 4th 2nd sealing material, 5th side sealing material, 6th 2 frame, 6a 2nd main surface part, 6b 2nd side surface part, 6c 2nd groove part, 6h screw hole, 7 screw, 8 spacer, 13 extension part, 15 convex part, 20 mount.

Claims (5)

A plate-like solar cell panel having a light-receiving surface on one main surface;
A first main surface portion covering the periphery of the light-receiving surface of the solar cell panel via a first seal material; and a first side surface portion surrounding the outside of the side portion of the solar cell panel continuously to the first main surface portion. A first frame;
A second main surface portion covering the periphery of the back surface of the solar cell panel via a second sealing material; and a second side surface portion continuous with the second main surface portion, and the second side surface portion of the first frame. A second frame inserted into the first side surface portion and sandwiching the solar cell panel with the first frame;
Made of an elastic material, fixed to either one of the first side surface portion and the second side surface portion, and when the second side surface portion is inserted into the first side surface portion, A side seal material that fits into a groove formed on the other side of the first side surface portion, seals between both side surface portions, and regulates the insertion position;
A solar cell module comprising: A groove is formed in any of the opposing surfaces of the second side surface portion and the first side surface portion, and the side surface sealing material is either one of the first side surface portion and the second side surface portion. The solar cell module according to claim 1, wherein the solar cell module is fixed by the step. The solar cell module according to claim 1, further comprising a groove that regulates a position of the sealing material on a surface of the second frame facing the solar cell panel. 2. The solar cell module according to claim 1, wherein the side surface sealing material is bonded to one surface of the opposing surfaces of the second side surface portion and the first side surface portion. The first side surface portion and the second side surface portion have a portion extending in a direction opposite to the light receiving surface from the back surface side of the solar cell panel, and the first side surface portion and the first The solar cell module according to claim 1, wherein the side surface sealing material is sandwiched between surfaces facing the two side surface portions.

Images