JP4016490B2 - Solar panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a solar cell panel.
[0002]
[Prior art]
2. Description of the Related Art In recent years, the use of solar energy has attracted attention in response to demands for energy saving, and various solar cells that receive sunlight by a large number of solar cells and convert them into electrical energy have been studied as one form of utilization.
[0003]
In this way, when sunlight is converted into electric energy and used, the solar cell is provided on a roof, a building wall surface, or the like.
[0004]
FIG. 10 is a plan view showing an example of a conventional solar cell panel, and FIG. 11 is a magnified view along the XI direction in FIG.
[0005]
10 and 11, a is an opaque substrate made of a fluororesin, b is a transparent glass plate, and an intermediate material is used between the substrate a and the glass plate b to bond the substrate a and the glass plate b together. c is interposed, and a large number of solar cells d are embedded in the intermediate material c. For embedding the solar cell d in the intermediate material c, a sheet-like ethylene vinyl acetate or polyvinyl butyral is sandwiched between the substrate a and the solar cell d and between the glass plate b and the solar cell d, respectively. It is performed by heating and pressurizing under.
[0006]
A cell ribbon e is connected to the surface of the solar battery cell d so as to connect the anode and the cathode of the adjacent solar battery cell d, and electricity generated in a predetermined solar battery cell d sequentially passes through the cell ribbon e. Power is supplied to the downstream solar cell d.
[0007]
A relay box f is attached to the outer lower surface of the substrate a, and is attached to a terminal g provided in the relay box f and a solar cell d at the downstream end of the feeding direction of one solar panel. The cell ribbon e is connected by a ribbon h penetrating the ceiling of the substrate a and the relay box f. The ribbon h is a copper ribbon solder-plated and has a thickness of about 0.13 to 0.20 mm and a width of about 5 to 6 mm.
[0008]
A lead wire i such as copper is connected to the terminal g. The lead wire i extends to the outside through a side portion of the relay box f, and is connected to a current collector box (not shown). In the figure, j is a diode.
[0009]
Solar energy is applied to the solar battery cell d through the glass plate b and the intermediate material c to generate electric power. The electricity generated by the solar cell d sequentially flows to the downstream side through the cell ribbon e, flows from the ribbon h to the lead wire i through the terminal g, and is collected from the lead wire i to the current collection box, and further to the inverter. Sent to the switchboard.
[0010]
[Problems to be solved by the invention]
In the solar cell panel described above, the intermediate portion of the ribbon h is not fixed before the intermediate material c is heated and pressure-bonded. Therefore, the ribbon h may move, kink or break when the intermediate material c is heated or pressure-bonded. There is.
[0011]
Therefore, when the ribbon h is used to connect the cell ribbon e and the terminal g, it is difficult to lay the ribbon h and the workability is poor.
[0012]
In order to prevent kinking and disconnection of the ribbon h, it is necessary to increase the thickness of the ribbon h and widen the width, but the cell ribbon e and the ribbon h are overlapped at the connection portion of the cell ribbon e and the ribbon h. Therefore, the thickness of the overlapping portion of the cell ribbon e and the ribbon h is further increased. For this reason, the intermediate material c cannot be sufficiently compressed at the overlapping portion of the cell ribbon e and the ribbon h during heating and pressure bonding of the intermediate material c, and bubbles in this portion cannot be sufficiently removed. The beauty of the appearance is impaired and the appearance is degraded.
[0013]
Furthermore, in order for the overlapping portion of the cell ribbon e and the ribbon h to be stored in the heated and pressure-bonded intermediate material c, the intermediate material c needs to be thick, leading to an increase in cost.
[0014]
Furthermore, when a transparent glass plate or a transparent resin material is used instead of an opaque resin material as the substrate a to form a so-called see-through type solar cell panel, the ribbon h is wide. Depending on the installation position of the relay box f, the ribbon h becomes obstructive, the appearance as a product is impaired, and the appearance is deteriorated.
[0015]
In view of the above-mentioned circumstances, the present invention provides a means for connecting a cell ribbon of a solar battery cell and a power supply line for transmitting electricity so that it is not twisted or disconnected during handling, heating of an intermediate material, or crimping. It aims to improve.
[0016]
In addition, the present invention makes it possible to reduce the thickness of the overlapping portion of the connection portion between the cell ribbon and the power supply line so that bubbles are not generated in the intermediate material in the vicinity of the connection portion between the cell ribbon and the power supply line. Even if the width of the feeder line is narrowed and the solar panel is a see-through type with transparent plates on both sides of the solar cell, the appearance will be improved without impairing the aesthetics of the product. It is aimed.
[0017]
Further, it is an object to reduce the cost by reducing the thickness of the intermediate material.
[0018]
[Means for Solving the Problems]
The first invention of the present invention is a predetermined plate-like structure in which a cell ribbon of solar cells housed between two transparent plates and a power supply line for transmitting electricity generated by the solar cells are provided. It is a solar cell panel characterized in that it is connected to the inner surface of the body by conductive solder that is oxidatively bonded (hereinafter simply referred to as conductive solder).
[0019]
Therefore, in the present invention, when connecting the cell ribbon and the power supply line, the conductive solder does not move, kink or break, and the work for connecting the cell ribbon and the power supply line is easy and workability is good.
[0020]
In addition, the thickness of the conductive solder-cell ribbon connection part and the conductive solder-feed line connection part is not so thick, and the conductive solder is not conspicuous from the outside. The shine is good.
[0021]
Furthermore, since the thickness of the intermediate member inserted between the plate-like bodies can be reduced, the cost can be reduced.
[0022]
The power supply line supplies electricity generated by the solar battery cell to a terminal housed in a relay box disposed outside the plate-like body, for example. The feeder line 1) extends from the inside between two transparent plate-like bodies to the outside between the plate-like bodies, and 2) is arranged outside the plate-like bodies. There is.
[0023]
The second invention oxidizes a cell ribbon of solar cells housed between two transparent plates and a power supply line for transmitting electricity generated by the solar cells on the inner surface of the plate. It is a solar cell panel characterized in that it is connected by coupled conductive solder and the feed line is inserted through a through hole provided in an attachment member attached to a plate-like body.
[0024]
According to a third aspect of the present invention, the cell ribbon of the solar cell housed between two transparent plates and the power supply line for transmitting electricity generated by the solar cell are oxidized on the inner surface of the plate. It is a solar cell panel characterized in that it is connected by a coupled conductive solder and laid in the axial direction on the outer periphery of an attachment member attached to the plate-like body.
[0025]
In the second to third inventions, the same effects as those of the first invention can be achieved.
[0026]
According to a fourth aspect of the present invention, a cell ribbon of a solar battery cell housed between two transparent plates and a power supply line for transmitting electricity generated by the solar battery cell are connected by conductive solder. In the solar cell panel, the solder of the conductive wire is oxidatively bonded to the outside of the plate-like body along the inner periphery of the hole for the attachment member provided in the plate-like body for attaching the attachment member from the inner surface of the plate-like body. is there.
[0027]
In the fourth invention as well, the same operational effects as in the first invention can be obtained, and since the conductive solder extends to the outside of the plate-like body, the connection with the cell ribbon and the power supply line is further improved. Easier to do and better workability.
[0028]
As the cell ribbon used in the first to fourth inventions, a copper foil obtained by dip-coating solder (Sn + Pb) or a copper foil obtained by electroplating solder is used. The thickness of the copper foil is 100 to 250 μm, the thickness of the solder dip-coated on the copper foil is 30 to 40 μm, and the thickness of the solder electroplated on the copper foil is 2 to 3 μm. Furthermore, the width of the cell ribbon is about 1 to 7.5 mm.
[0029]
The composition of the conductive solder used in the first to fourth inventions is Pb 40 to 98%, Sn 1.8 to 50%, Zn 0.05 to 10%, Sb 0.05 to 10%, and Al 0.1% or less. Or Pb 40 to 98%, Sn 1.8 to 50%, Zn 0.05 to 10%, Sb 0.05 to 10%, Al 0.1% or less, and the total amount of Si + Ti + Be is preferably 0.5% or less.
[0030]
The conductive solder is fixed on the inner surface of a plate-like body such as a glass plate by an oxidative bond, and the thickness thereof is 10 to 200 μm, preferably about 20 to 150 μm, and the width is preferably 0.5 to 5 mm. It is about 1.5 to 3 mm.
[0031]
When the conductive solder is fixed to the inner surface of the plate-like body by oxidative bonding, for example, the iron part is heated by a coil-shaped heater, and the tip is superposed by the high-frequency voltage supplied from the oscillator. Use a device that generates sonic vibrations. In other words, an ultrasonic wave is applied to melt the conductive solder, the molten conductive solder is supplied to the plate-like body, and Zn (-Zn) having a strong oxygen affinity between the plate-like body and the conductive solder. A chemical bond (oxidative bond) mediated by -O-) is generated. Thereby, the conductive solder can be firmly bonded to the surface of the plate-like body.
[0032]
For example, when solder is dip coated on the aforementioned cell ribbon, a flux is used, but the flux does not completely eliminate the residue even after post-cleaning. As a result, the residue of the flux oxidizes the solder, The life of equipment will be shortened by making insulation.
[0033]
However, since the flux is not used when the conductive solder is oxidatively bonded to the plate-like body, the conductive solder is not oxidized, so that the insulation does not progress and the life of the device is prolonged.
[0034]
In addition, when a ribbon-like one is used instead of the conductive solder portion, temporary fixing is performed by the solar battery cells at the time of attachment. However, when the solar cells are stacked or pressure-bonded between the plate-like bodies, the ribbon-like thing that replaces the conductive solder may move. However, since the conductive solder is fixed to the surface of the plate-like body by an oxidative bond, it does not move even when the solar cells are stacked or crimped between the plate-like bodies and does not contact the solar cells. It will not cause a short circuit.
[0035]
In addition, since the conductive solder does not move as described above, it can maintain sufficient linearity and maintain aesthetics, and has a high degree of design freedom.
[0036]
As the power supply line, the same one as the cell ribbon can be used in the part not exposed to the outside, but in the part exposed to the outside, a conductor of insulation coating, for example, an electric annealed copper wire, a tinned annealed copper wire, a silver / nickel plated annealed copper Wire, silver-plated annealed copper wire is used, and Teflon or the like is used as an insulator. The outer diameter of the conductor is 0.2 to 1.0 mm, and the thickness of the insulator is about 0.15 to 0.2 mm.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0038]
FIG. 1 is a cross-sectional view (corresponding to claim 1) showing a first example of an embodiment of the solar cell panel of the present invention, FIG. 2 is an enlarged view in the II direction of the junction box shown in FIG. It is a III-III direction arrow directional view of FIG.
[0039]
In FIG. 1, 1 and 2 are glass plates, 3 is an intermediate material, 4 is a solar cell, 5 is a cell ribbon, 5a is an extension of the cell ribbon 5, 6 is a through hole, 7 is a copper wire (feed line), 8 Is a butyl rubber, 9, 10 is a silicone sealant, 11 is a relay box, 11a is a box body, 11b is a cap, 12 is a screw, 13 is a terminal, 14 is a lead wire, 16 is a conductive solder, 15 in FIG. Is a diode.
[0040]
Between the glass plates 1 and 2 that are two transparent plates arranged in parallel, an intermediate material 3 such as ethylene vinyl acetate or polyvinyl butyral is interposed to bond the glass plates 1 and 2 together. A large number of solar cells 4 are embedded in the intermediate material 3 at regular intervals and are laminated on the inner surfaces of the glass plates 1 and 2. Thus, a laminated glass is formed by the glass plates 1 and 2. The plate thickness of the glass plates 1 and 2 may be the same or different.
[0041]
There is a portion without the solar battery cell 4 between the adjacent solar battery cells 4 and 4, and sunlight can pass through the glass plates 1 and 2 from this part. As the solar cell 4, there are crystalline and amorphous ones.
[0042]
The solar cells 4 are attached to the glass plates 1 and 2 via the intermediate material 3 by interposing sheets such as ethylene vinyl acetate or polyvinyl butyral between the glass plates 1 and 2 and the solar cells 4, respectively. A laminate is formed, and the laminate is heated and pressurized under vacuum.
[0043]
In order to connect the anode and the cathode of the adjacent solar cell 4 to the upper and lower surfaces of the solar cell 4, the cell ribbon 5 obtained by performing solder plating on the thin copper plate has the upper surface and the lower surface of the adjacent solar cell 4. Are connected to each other. In addition, among the cell ribbons 5, the cell ribbon 5 at the most downstream end in the current flow direction is directed from the end of the solar battery cell 4 toward the edge of the solar battery panel and toward the upper surface side (intermediate material side) of the glass plate 2. The extending portion 5a of the extending cell ribbon 5 is provided.
[0044]
A through-hole 6 formed near the edge of the glass plate 2 is provided with a copper wire 7 extending from the intermediate material 3 in the glass plates 1 and 2 to the outside of the glass plate 2 as a power supply line. The through-hole 6 is filled with butyl rubber 8 so as to be located on the intermediate material 3 side and with a silicon sealant 9 so as to be located on the outer side of the glass plate 2.
[0045]
A silicon sealant 10 is bonded to the outer surface of the glass plate 2 so as to connect to the silicon sealant 9 filled in the through-hole 6 and cover the through-hole 6, and a relay box 11 is attached to the outer surface of the silicon sealant 10. Is glued.
[0046]
The relay box 11 includes a box body 11a having a hollow inside and having a lower end opened, and a cap 11b that shields the lower end opening and can be fixed to the box body 11a with a screw 12.
[0047]
Inside the box body 11a, a brass strip-like terminal 13 is attached by screws or solder, and lead wires 14 are connected to the terminals 13 by screws, solder or caulking. The lead wire 14 extends out of the box body 11a through a hole formed in the box body 11a. A current bypass diode 15 is arranged in the box body 11a.
[0048]
On the inner surface of the glass plate 2, conductive solder 16 is fixed in a thin band shape from the extending part 5 a side of the cell ribbon 5 located on the edge part side of the solar battery panel to the vicinity of the edge part of the through hole 6. ing. Further, both end portions of the conductive solder 16 are respectively connected to the end portion of the extending portion 5a of the cell ribbon 5 and the end portion of the copper wire 7 on the intermediate material 3 side by soldering. The conductive solder 16 is fixed to the inner surface of the glass plate 2 by oxidative bonding.
[0049]
Solar energy is applied to the solar cells 4 through the glass plate 1 and the intermediate material 3 to generate power. Electricity generated in the solar battery cell 4 sequentially flows to the downstream side through the cell ribbon 5, and from the extending portion 5 a of the cell ribbon 5 through the conductive solder 16 and the copper wire 7, the terminal 13 in the relay box 11. The current flows from the terminal 13 to the lead wire 14, is collected from the lead wire 14 to, for example, a current collection box, and further sent to the switchboard through the inverter.
[0050]
When a certain solar battery cell 4 is shaded and solar energy is not applied to the solar battery cell 4, power generation is not performed in the solar battery cell 4. In this case, the electricity fed from the solar cell 4 on the upstream side is sent to the downstream side through the diode 15 of the solar cell panel.
[0051]
In the present embodiment, the conductive solder 16 is fixed to the inner surface of the glass plate 2 in advance by oxidation bonding before the glass plates 1 and 2 are heated and crimped with the intermediate material 3 when the solar cell panel is manufactured. Therefore, the conductive solder 16 does not move, kink or be insulated when the intermediate material 3 is heated or pressed. Therefore, the work at the time of connecting the extending part 5a of the cell ribbon 5 and the copper wire (feeding line) 7 via the conductive solder 16 is easy and workability is good.
[0052]
Further, since the thickness of the conductive solder 16 is thin, the thickness of the connecting portion between the conductive solder 16 and the cell ribbon 5 and the connecting portion between the conductive solder 16 and the copper wire 7 are not so thick. For this reason, the intermediate material 3 can be sufficiently applied to the connecting portion between the conductive solder 16 and the cell ribbon 5 and the connecting portion between the conductive solder 16 and the copper wire 7 when the glass plates 1 and 2 and the intermediate material 3 are heated and pressed. As a result, the air bubbles in this portion can be sufficiently removed, so that no foam remains in the intermediate material 3, the appearance of the product is improved, and the appearance is improved.
[0053]
Furthermore, since the conductive solder 16 is narrow in width, the conductive solder 16 that is laid is not obstructive regardless of the position where the relay box 11 is provided. This also improves the aesthetics of the product. , Looks good.
[0054]
Furthermore, since the thickness of the conductive solder 16 is thin, the thickness of the connecting portion between the conductive solder 16 and the cell ribbon 5 and the thickness of the connecting portion between the conductive solder 16 and the copper wire 7 are also reduced as described above. For this reason, the thickness of the intermediate member 3 for embedding these connecting portions inside can be reduced, and therefore the cost can be reduced.
[0055]
If the total thickness of the two glass plates 1 and 2 constituting the laminated glass is the same, a laminated glass in which the thickness of the glass plate 2 on one side is thicker than the thickness of the other glass plate 1 is used. And wind-resistant performance improves compared with the laminated glass which made the two glass plates the same thickness.
[0056]
For example, in a laminated glass having a total thickness of 20 mm, a laminated glass of 15 mm + 5 mm can withstand a wind pressure 1.17 times that of a laminated glass of 10 mm + 10 mm.
[0057]
FIG. 4 is a longitudinal sectional view (corresponding to claims 1 and 2) of the second example of the embodiment of the solar cell panel of the present invention.
[0058]
In FIG. 4, 17 is a tapered surface, 18 is a cylindrical surface, 19 is a bolt hole, 20 is a tapered portion, 21 is a cylindrical portion, 22 is a buffer ring, 23 is a through hole, 24 is a hinge bolt, and 25 is a hinge bolt female body. , 26 is a hollow hemispherical seat, and 27 is a lid. 28 is a male screw, 29 is a hinge bolt male body, 30 is a head, 31 is a trunk, 32 is a male screw, 33 is a bolt, 34 is a washer, 35 is a nut, 36 is a mounting hardware, 37 is an arm, and 38 is a bolt. Holes 39 are through holes, 40 and 41 are washers 42 is a lead wire, and 47 is butyl rubber.
[0059]
In the embodiment of the solar cell panel of the present invention, no lead box is provided on the glass plate 2, and the lead wire 42 having one end connected to the conductive solder 16 that is oxidatively bonded to the inner surface of the glass plate 2 is The hinge bolt 24 attached to the glass plate 2 passes through the lid 27 of the hinge bolt female body 25, the hinge bolt male body 29, and the bolt 33 screwed into the hinge bolt male body 29, and is led out to the outside. .
[0060]
That is, at the four corners of the glass plate 2, as shown in FIG. 4, there are a tapered surface 17 that has a maximum diameter on the outdoor O side and a cylindrical surface 18 that continues to the reduced diameter portion of the tapered surface 17. The bolt hole 19 having a countersink shape on the outdoor O side and a cylindrical shape on the indoor I side is formed so as to penetrate the glass plate 2 in the plate thickness direction.
[0061]
The bolt hole 19 includes a tapered portion 20 that is in close contact with the inner periphery of the countersunk portion of the bolt hole 19 and a cylindrical portion 21 that is in close contact with the cylindrical portion of the bolt hole 19. The buffer ring 22 provided with is fitted. Thus, the buffer ring 22 is provided with a through hole 23 having a cross-sectional shape substantially similar to the outer cross-sectional shape of the buffer ring 22 along the outer shape.
[0062]
A hinge bolt female body 25 of a hinge bolt 24 whose outer peripheral surface can be in close contact with the inner peripheral surface of the through hole 23 is fitted into the through hole 23 of the buffer ring 22 so as to protrude toward the room I side. Thus, the female body 25 of the hinge bolt is provided with a hollow hemispherical seat 26 having an opening on the room I side of the glass plate 2, and the hollow hemispherical seat 26 is provided on the outdoor O side of the glass plate 2 of the hinge bolt female body 25. Is provided from the outdoor O side. A male screw 28 is provided on the outer periphery of the cylindrical surface of the hinge bolt female body 25 projecting toward the room I side.
[0063]
The hinge bolt male body 29 connected to the hinge bolt female body 25 includes a hemispherical head 30 and a substantially inverted truncated conical body 31 whose diameter is increased from the head 30 along the axis. In addition, a bolt 33 can be screwed into a female screw 32 formed at the end of the body 31 opposite to the head 30.
[0064]
Further, a head 30 of a hinge bolt male body 29 is fitted in the hollow hole forming the hollow hemispherical seat 26 of the hinge bolt female body 25, and the hinge bolt male body 29 and the hinge bolt female body 25 are The head part 30 of the hinge bolt male body 29 can move like a universal joint by sliding with respect to the hollow hemispherical seat 26 of the hinge bolt female body 25. Thus, the hinge bolt 24 is formed by the hinge bolt female body 25 and the hinge bolt male body 29, and the hinge bolt male body 29 protrudes from the hinge bolt female body 25 toward the room I side.
[0065]
A washer 34 is fitted on a portion of the hinge bolt female body 25 that protrudes from the glass plate 2 toward the room I side. The washer 34 is inserted into the glass by a nut 35 screwed into the male screw 28 of the hinge bolt female body 25. It is fixed to the plate 2.
[0066]
A bolt hole 38 is formed at the tip of each arm 37 of the attachment metal 36 supported by a predetermined structure, and the bolt 33 inserted through the bolt hole 38 is screwed into the female screw 32 of the hinge bolt male body 29. As a result, the solar cell panel is fixed to the arm 37 via the hinge bolt 24. Washers 40 and 41 are interposed between the arm 37 and the hinge bolt male body 29 and between the arm 37 and the head of the bolt 33.
[0067]
A through-hole 39 is formed in the hinge bolt 24 in the lid portion 27 axial center portion of the hinge bolt female body 25, the axial center portion of the hinge bolt male body 29, and the axial center portion of the bolt 33 so as to penetrate the axial center portion. The lead wire 42 is inserted into the through hole 39 as a power supply line.
[0068]
Thus, one end of the lead wire 42 between the glass plates 1 and 2 is connected to one end of the conductive solder 16 oxidatively bonded to the inner surface of the glass plate 2, and the other end of the lead wire 42 is connected to the bolt 33. It extends outward from the head.
[0069]
In the present embodiment, the current generated in the solar battery cell 4 is fed downstream from the extending portion 5 a of the cell ribbon 5 through the conductive solder 16 and the lead wire 42.
[0070]
Also in the embodiment of the present invention, as in the above-described embodiment, the conductive conductive solder 16 does not move, kink or break during the manufacture of the solar cell panel, and thus is manufactured. Easy to work and good workability.
[0071]
Further, since the thickness of the conductive solder 16 is thin, the thickness of the connecting portion between the conductive solder 16 and the cell ribbon 5 and the connecting portion between the conductive solder 16 and the lead wire 42 are not so thick.
[0072]
For this reason, the intermediate material 3 is sufficiently provided even at the connecting portion between the conductive solder 16 and the cell ribbon 5 and the connecting portion between the conductive solder 16 and the lead wire 42 when the glass plates 1 and 2 and the intermediate material 3 are heated and pressed. As a result, the air bubbles in this portion can be sufficiently extracted, so that no bubbles are reduced in the intermediate material 3, the appearance of the product is improved, and the appearance is improved.
[0073]
Further, since the conductive solder 16 is narrow, it does not become obstructive, and the lead wire 42 is provided so as to penetrate the hinge bolt 24 in the axial direction. From this point of view, the appearance of the product is improved and the appearance is improved.
[0074]
Furthermore, since the thickness of the conductive solder 16 is thin, the thickness of the connection portion between the conductive solder 16 and the cell ribbon 5 and the connection portion between the conductive solder 16 and the lead wire 42 is also reduced. The thickness of the intermediate material 3 for embedding these connecting portions inside can be reduced, so that the cost can be reduced.
[0075]
5 is a sectional view (corresponding to claims 1 and 3) showing a third example of the embodiment of the solar cell panel of the present invention, FIG. 6 is a perspective view of the buffer ring shown in FIG. 5, and FIG. It is a perspective view of the washer which contacts the surface of the glass plate of the indoor side shown.
[0076]
6, 43 is a slit having a width of 1 to 2 mm formed so as to extend vertically in the tapered portion 20 and the cylindrical portion 21 of the buffer ring 22. In FIG. 7, 44 is a width 1 to 2 formed in the radial direction of the washer 34. A 2 mm slit, 45 is a lead wire, and 46 is butyl rubber.
[0077]
In the present embodiment, the lead wire 45 having one end connected to the conductive solder 16 oxidatively bonded to the inner surface of the glass plate 2 is formed in the slit 43 and the washer 34 formed in the buffer ring 22 as a power supply line. The glass plate 2 extends outside through the slit 44. The slit 44 is filled with butyl rubber 46 and a gap is buried.
[0078]
In the present embodiment, the electric current generated in the solar battery cell 4 is fed downstream from the extending portion 5 a of the cell ribbon 5 through the conductive solder 16 through the lead wire 45.
[0079]
Also in the present embodiment, as in the above-described embodiments, the workability is good, the aesthetic appearance is good, and the same effect as described above that the cost can be reduced can be achieved.
[0080]
FIG. 8 is a cross-sectional view (corresponding to claims 1 and 4) showing a fourth example of the embodiment of the solar cell panel of the present invention, and FIG. It is a perspective view.
[0081]
In the present embodiment, the conductive solder 16 is oxidatively bonded in the form of a band from the inner surface of the glass plate 2 to the inner wall surface in the axial direction of the bolt hole 19 and the outer surface of the glass plate 2. The conductive solder 16 passes through the slit 43 (see FIG. 6) at the buffer ring 22 portion and passes between the slits 44 of the washer 34 at the outer surface portion of the glass plate 2. A lead wire 45 is connected to the slit 44, and the slit 44 is filled with butyl rubber 46 so that the gap is buried.
[0082]
In the present embodiment, the electric current generated in the solar battery cell 4 is fed downstream from the extending portion 5 a of the cell ribbon 5 through the conductive solder 16 through the lead wire 45.
[0083]
Also in this embodiment, like the above-described embodiment, the workability is good and the aesthetic appearance is good, and the cost can be reduced. The conductive solder 16 extends from the inner wall surface of the bolt hole 19 to the outer surface of the glass plate 2, and the lead wire 45 can be connected to the conductive solder 16 on the outside of the glass plate 2. The work is easy to do and the workability is even better.
[0084]
4 to 9 described above, the same components as those shown in FIG. 1 are denoted by the same reference numerals.
[0085]
In addition, this invention is not limited to the above-mentioned embodiment, Of course, various examinations can be added within the range which does not deviate from the summary of this invention.
[0086]
【The invention's effect】
In the solar cell panel of the present invention, any of claims 1 to 3 can exhibit various excellent effects as described below.
[0087]
I) Solder does not move, kink or break when connecting the cell ribbon and the power supply line, and the work when connecting the cell ribbon and the power supply line is easy and workability is good.
[0088]
II) The thickness of the connecting portion between the solder and the cell ribbon or the connecting portion between the solder and the feeder line is not so thick, and the solder is not noticeable from the outside, so that the appearance is improved and the appearance is good.
[0089]
III) Since the thickness of the intermediate member inserted between the plate-like bodies can be reduced, the cost can be reduced.
[0090]
In the solar cell panel of the present invention, the same effect as in the first to third aspects can be obtained in the case of the invention of claim 4, and the conductive solder extends to the outside of the plate-like body. Therefore, it is easier to connect with the cell ribbon and the power supply line, and the workability is further improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first example of an embodiment of a solar cell panel of the present invention.
2 is an enlarged view in the II direction of the relay box shown in FIG. 1. FIG.
3 is a view taken in the direction of arrows III-III in FIG. II.
FIG. 4 is a longitudinal sectional view of a second example of the embodiment of the solar cell panel of the present invention.
FIG. 5 is a longitudinal sectional view of a third example of the embodiment of the solar cell panel of the present invention.
6 is a perspective view of the buffer ring shown in FIG. 5. FIG.
7 is a perspective view of a washer in contact with a surface of a glass plate on the indoor side shown in FIG. 5. FIG.
FIG. 8 is a cross-sectional view showing a fourth example of the embodiment of the solar cell panel of the present invention.
9 is a perspective view of a washer that comes into contact with the surface of the glass plate on the indoor side shown in FIG. 8. FIG.
FIG. 10 is a general plan view of a solar cell panel.
11 is a view taken in the direction of the arrow XI in FIG.
[Explanation of symbols]
1 Glass plate (plate-like body)
2 Glass plate (plate-like body)
4 Solar cells
5 Cell ribbon
7 Copper wire (feed line)
11 Relay box
13 Terminal
16 Conductive solder
19 Bolt hole
24 Hinge bolt
42 Lead wire (feeding wire)
45 Lead wire (feeding wire)

Claims (4)

A conductive material in which a cell ribbon of a solar cell housed between two transparent plates and a power supply line for transmitting electricity generated by the solar cell are oxidatively bonded to the inner surface of a predetermined plate. A solar panel characterized by being connected by sex solder. A conductive ribbon formed by oxidizing and bonding a cell ribbon of a solar cell housed between two transparent plates and a power supply line for transmitting electricity generated by the solar cell to the inner surface of the plate. A solar cell panel, wherein the solar cell panel is connected by soldering and is inserted into a through hole provided in an attachment member attached to a plate-like body. Conductivity in which a cell ribbon of a solar cell housed between two transparent plates and a power supply line for taking out electricity generated by the solar cell are oxidatively bonded to the inner surface of the plate A solar cell panel, wherein the solar cell panel is laid in the axial direction on the outer peripheral portion of an attachment member that is connected by soldering and is attached to the plate-like body. The cell ribbon of the solar cell housed between the two transparent plates and the power supply line for transmitting electricity generated by the solar cell are connected by conductive solder and the solder of the conductive wire is connected. A solar cell panel characterized by being oxidatively bonded to the outside of the plate-like body along the inner periphery of the hole for the attachment member provided in the plate-like body in order to attach the attachment member from the inner surface of the plate-like body.

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