JP2000049367A - Solar cell panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a solar cell panel in which conductive solder is not twisted or disconnected, when the solar cell panel is handled or when an intermediate material is heated and compression-bonded and whose workability is enhanced by a method, wherein a cell ribbon inside the solar cell panel and a power-supply line which supplies electricity are connected by the conductive solder which is oxidized and bonded to the inner surface of a prescribed sheet-like body. SOLUTION: Conductive solder 16 in a slender belt shape is fixed to and installed at the inner surface of a glass plate 2 from the side of the extension part 5a of a cell ribbon 5, which is situated on the side of the end edge part of a solar cell panel up to the edge part of a through-hole 6. In addition, both end parts of the conductive solder 16 are soldered and connected to the end part of the extension part 5a of the cell ribbon 5 and the side end part of an intermediate material 3 on a copper wire 7. The conductive solder 16 is oxidized and bonded to, fixed to, and installed at the inner surface of the glass plate 2. Since the conductive solder 16 is oxidized and bonded to, fixed to and installed at the inner surface of the glass plate 2, in advance before a glass plate 1 and the glass plate 2 are heated and compression-bonded by using the intermediate material 3 in the manufacture of a solar cell panel, it is possible to prevent the conductive solder 16 from being moved, twisted and disconnected when the intermediate material 3 is heated and compression-bonded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a solar cell panel.

[0002]

2. Description of the Related Art In recent years, attention has been paid to the use of solar energy in response to a demand for energy saving. As one of the utilization forms, there are various solar cells that receive sunlight into a large number of solar cells and convert the light into electric energy. Are being considered.

[0003] When the sunlight is converted into electric energy for use, the solar cell is provided on a roof or a wall surface of a building.

FIG. 10 is a plan view showing an example of a conventional solar cell panel, and FIG. 11 is an enlarged view in the direction XI of FIG.

In FIGS. 10 and 11, a is an opaque substrate made of a fluororesin, b is a transparent glass plate, and the substrate a and the glass plate b are bonded between the substrate a and the glass plate b. Therefore, the intermediate material c is interposed, and a large number of solar cells d are embedded in the intermediate material c. The embedding of the solar cell d into the intermediate material c is performed by sandwiching a sheet-like ethylene vinyl acetate or polyvinyl butyral 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 underneath.

On the surface of the solar cell d, a cell ribbon e is connected to connect the anode and the cathode of the adjacent solar cell d.
Are connected, and the electricity generated in the predetermined solar cell d passes through the cell ribbon e and is sequentially connected to the downstream solar cell d.
Power is supplied to

[0007] A relay box f is mounted on the outer lower surface of the substrate a, and a terminal g provided in the relay box f and a solar cell at the downstream end in the power supply direction of one solar cell panel. The cell ribbon e attached to the substrate a and the junction box f
Are connected by a ribbon h penetrating through the ceiling portion. 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.

A lead g of copper or the like is connected to the terminal g. The lead i extends through the side of the junction box f to the outside and is connected to a current collection box (not shown). ing.
In the figure, j is a diode.

The solar energy consists of a glass plate b and an intermediate material c.
Irradiates the solar cell d through the power source to generate power.
The electricity generated in the solar cell d flows sequentially downstream through the cell ribbon e, flows from the ribbon h to the lead wire i through the terminal g, is collected from the lead wire i to the current collection box, and is further operated by the inverter. Sent to the switchboard.

[0010]

In the above-described solar cell panel, since the intermediate portion of the ribbon h is not fixed before the intermediate member c is heated and pressed, the ribbon h moves when the intermediate member c is heated and pressed. May be twisted or disconnected.

Therefore, the cell ribbon e and the terminal g
When the ribbon h is used for the connection, it is difficult to lay the ribbon h, and the workability is poor.

In order to prevent the ribbon h from being twisted or broken, it is necessary to increase the thickness of the ribbon h and increase the width. However, at the connection between the cell ribbons e and h, the cell ribbon e and the ribbon h are connected. Must be overlapped,
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 at the time of heating and pressing the intermediate material c, and the air bubbles in this portion cannot be sufficiently removed. Appearance is deteriorated and appearance is deteriorated.

Further, in order for the overlapped portion of the cell ribbon e and the ribbon h to be housed in the heated and crimped intermediate material c, the intermediate material c needs to be thick, which leads to an increase in cost. I do.

Further, when a transparent glass plate or a transparent resin material is used instead of the opaque resin material as the substrate a to form a so-called see-through type solar cell panel, the width of the ribbon h Is large, the ribbon h becomes obstructive depending on the installation position of the relay box f, the appearance of the product is impaired, and the appearance is reduced.

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 as not to be twisted or broken during handling, heating of an intermediate material, or pressure bonding. The purpose is to improve workability.

Further, according to the present invention, the thickness of the overlapping portion of the connection portion between the cell ribbon and the power supply line is reduced, so that bubbles are not generated in the intermediate material near the connection portion between the cell ribbon and the power supply line. In addition, the width of the power supply line is narrowed and the appearance is improved without impairing the aesthetic appearance of the product even if the solar cell panel is a see-through type where transparent plate bodies are arranged on both sides of the solar cell The purpose is to let them.

It is another object of the present invention to reduce the cost by reducing the thickness of the intermediate member.

[0018]

According to a first aspect of the present invention, a cell ribbon of a solar cell housed between two transparent plates and power generated by the solar cell are transmitted. A solar cell panel characterized in that a power supply line is connected to an inner surface of a predetermined plate-shaped body by conductive solder oxidized and bonded (hereinafter, simply referred to as conductive solder).

Therefore, according to the present invention, the conductive solder does not move, twist, or break when connecting the cell ribbon and the power supply line. Is good.

Also, the thickness of the connection between the conductive solder and the cell ribbon and the connection between the conductive solder and the power supply line are not so large, and the conductive solder is not prominent from the outside, so that the appearance is improved. And look good.

Further, since the thickness of the intermediate member inserted between the plate-like members can be reduced, the cost can be reduced.

The power supply line supplies the electricity generated by the solar battery cells to a terminal housed in a relay box arranged outside, for example, a plate-like body. The power supply line is: 1) extending from the inside between two transparent plate members to the outside between the plate members; and 2) being disposed outside between the plate members. There is.

According to a second aspect of the present invention, a cell ribbon of a solar cell housed between two transparent plate-like bodies and a power supply line for transmitting electricity generated by the solar cell are formed inside the plate-like body. A solar cell panel characterized in that the solar cell panel is connected by a conductive solder oxidized to the surface and the power supply line is inserted into a through hole provided in a mounting member mounted on a plate-like body.

According to a third aspect of the present invention, a cell ribbon of a solar cell housed between two transparent plate-like bodies and a power supply line for transmitting electricity generated by the solar cell are formed in the plate-like body. A solar cell panel characterized in that it is connected to the surface by a conductive solder oxidized and bonded, and the power supply line is laid in an axial direction on an outer peripheral portion of an attachment member attached to a plate-like body.

In the second and third aspects, the same operation and effect as in the first aspect can be obtained.

According to a fourth aspect of the present invention, 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 connected by conductive solder. The sun is connected and oxidized to the outside of the plate along the inner periphery of the mounting member hole provided in the plate for mounting the mounting member from the inner surface of the plate to the mounting member. It is a battery panel.

According to the fourth aspect, the same operation and effect as those of the first aspect can be obtained. In addition, since the conductive solder extends to the outside of the plate-like body, the conductive solder is connected to the cell ribbon and the power supply line. The connection is easier and the workability is better.

As the cell ribbon used in the first to fourth inventions, a ribbon obtained by dip-coating a copper foil with solder (Sn + Pb), or a ribbon obtained by electroplating a solder on a copper foil is used. In addition, the thickness of the copper foil is 100 to 250 μm, the thickness of the solder that is dip-coated on the copper foil is 30 to 40 μm,
The thickness of the solder to be electroplated on the copper foil is 2-3 μm. Further, the width of the cell ribbon is about 1 to 7.5 mm.

The conductive solder used in the first to fourth inventions has a composition of 40 to 98% of Pb, 1.8 to 50% of Sn,
Zn 0.05-10%, Sb 0.05-10%, Al
0.1% or less, or Pb 40 to 98%, S
n 1.8 to 50%, Zn 0.05 to 10%, Sb 0.0
It is preferable that the total amount is 5% to 10%, Al is 0.1% or less, and the total amount of Si + Ti + Be is 0.5% or less.

The conductive solder is fixed on the inner surface of a plate-like body such as a glass plate by oxidation bonding, and has a thickness of 10 to 10.
200 μm, preferably about 20 to 150 μm,
The width is about 0.5 to 5 mm, preferably about 1.5 to 3 mm.

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 iron is heated by a high-frequency voltage supplied from an oscillator. First, a device that generates ultrasonic vibration is used. That is, an ultrasonic wave is applied to melt the conductive solder, the melted conductive solder is supplied to the plate, and Zn (−Zn) having a strong oxygen affinity is formed between the plate and the conductive solder. -O-)-mediated chemical bond (oxidative bond) is generated. Thereby, the conductive solder can be firmly bonded to the surface of the plate-like body.

For example, when dip coating solder on the above-mentioned cell ribbon, flux is used.
Even if the flux is washed after washing, the residue cannot be completely eliminated, and as a result, the residue of the flux oxidizes the solder, promotes insulation, and shortens the life of the equipment.

However, when the conductive solder is oxidized and bonded to the plate-like body, no flux is used, so the conductive solder does not oxidize, so that the insulating material does not progress and the life of the device is prolonged. I do.

In the case where a ribbon-shaped one is used instead of the conductive solder portion, temporary fixing is temporarily performed by the solar cell at the time of attachment. However, when laminating or crimping the solar cells between the plate-like bodies, a ribbon-like one instead of conductive solder may move.
However, since the conductive solder is fixed to the surface of the plate-like body by oxidative bonding, it does not move even when the solar cells are stacked or pressed between the plate-like bodies, and does not contact the solar cells. No short circuit occurs.

Further, since the conductive solder does not move as described above, it is possible to sufficiently maintain the linearity, maintain the beautiful appearance, and have a high degree of design freedom.

As the power supply line, a portion similar to the cell ribbon can be used in a portion not exposed to the outside, but in a portion exposed to the outside, a conductor having an insulating coating, for example, a soft copper wire for electric use, a tinned soft copper wire, a silver Nickel-plated soft copper wire and silver-plated soft copper wire are used, and Teflon or the like is used as an insulator. The conductor has an outer diameter of 0.2 to 1.0 mm, and the thickness of the insulator is about 0.15 to 0.2 mm.

[0037]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view (corresponding to claim 1) of a first embodiment of a solar cell panel according to the present invention, FIG. 2 is an enlarged view of the relay box shown in FIG. FIG. 3 shows I in FIG.
FIG. 3 is a view taken in the direction of arrows II-III.

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 (feeding line), 8 is butyl rubber, 9 and 10 are silicone sealants, 11 is a relay box, 11a is a box body, 11b is a cap, 12 is a screw,
Reference numeral 13 denotes a terminal, 14 denotes a lead wire, 16 denotes a conductive solder, and 15 in FIG. 3 denotes a diode.

An intermediate member 3 such as ethylene vinyl acetate or polyvinyl butyral is interposed between the two transparent plate-shaped glass plates 1 and 2 arranged in parallel in order to bond the glass plates 1 and 2 together. A large number of solar cells 4 are embedded in the intermediate member 3 at regular intervals, and are stacked 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.

There is a portion without the solar cell 4 between the adjacent solar cells 4, 4 from which sunlight can pass through the glass plates 1, 2. The solar cell 4 includes crystalline and amorphous solar cells.

To attach the solar cells 4 to the glass plates 1 and 2 via the intermediate member 3, a sheet such as ethylene vinyl acetate or polyvinyl butyral is provided between the glass plates 1 and 2 and the solar cells 4 respectively. This is performed by forming a laminate by interposing the laminate and heating and pressing the laminate under vacuum.

On the upper and lower surfaces of the solar cells 4, a cell ribbon 5 formed by soldering a thin copper plate to connect the anode and the cathode of the adjacent solar cells 4 is provided. It is connected so as to connect the upper surface and the lower surface. Further, 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 cell 4 toward the edge of the solar cell panel and toward the upper surface side (intermediate material side) of the glass plate 2. It has an extending portion 5a of the extending cell ribbon 5.

A copper wire 7 extending from the intermediate member 3 in the glass plates 1 and 2 to the outside of the glass plate 2 is provided as a power supply line in a through hole 6 formed near the edge of the glass plate 2. The butyl rubber 8 is located in the through hole 6 so as to be positioned on the intermediate material 3 side.
Is filled and the silicon sealant 9 is filled so as to be located outside the glass plate 2.

A silicon sealant 10 is adhered to the outer surface of the glass plate 2 so as to be connected to the silicon sealant 9 filled in the through hole 6 and to cover the through hole 6. The electric box 11 is adhered.

The relay box 11 is provided with a box body 11a having a hollow inside and an open lower end, and a cap 11b which covers the lower end opening and can be fixed to the box main body 11a by screws 12.

A brass strip-shaped terminal 13 is attached to the inside of the box main body 11a by a screw or solder, and a lead wire 14 is connected to the terminal 13 by a screw, solder or caulking. Lead wire 14 is box body 11
A extends out of the box body 11a from a hole formed in the box body a. A diode 15 for current bypass is provided in the box body 11a.
Is arranged.

On the inner surface of the glass plate 2, a conductive solder 16 is formed in a strip shape from the extending portion 5 a of the cell ribbon 5 located near the edge of the solar cell panel to the vicinity of the edge of the through hole 6. It is fixed. Both ends of the conductive solder 16 are connected to the end of the extending portion 5a of the cell ribbon 5 and the end of the copper wire 7 on the intermediate material 3 side by soldering. The conductive solder 16 is fixed on the inner surface of the glass plate 2 by oxidation bonding.

The solar energy consists of the glass plate 1 and the intermediate material 3
Irradiates the solar cell 4 through the solar cell to generate electric power.
The electricity generated by the solar cell 4 flows downstream sequentially 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 to the terminal 13 in the relay box 11. To terminal 13 and lead 14
Then, the current is collected from the lead wire 14 to, for example, a current collection box, and further sent to a switchboard through an inverter.

When a certain solar cell 4 is shaded and solar energy is not applied to the solar cell 4, power is not generated in the solar cell 4. Thus, in this case, the electricity supplied from the solar cell 4 on the upstream side is transmitted to the downstream side through the diode 15 of the solar cell panel.

In this embodiment, the conductive solder 16 is oxidized and bonded to the inner surface of the glass plate 2 before heating and pressing the glass plates 1 and 2 with the intermediate member 3 at the time of manufacturing the solar cell panel. Heating of the intermediate material 3 because it is fixed,
The conductive solder 16 moves or twists during crimping,
There is no insulation. Therefore, the cell ribbon 5
And the copper wire (feeding line) 7 is connected to a conductive solder 16
The work at the time of connection via is easy to perform, and the workability is good.

Further, since the thickness of the conductive solder 16 is small, the thickness of the connection between the conductive solder 16 and the cell ribbon 5 and the thickness of the connection between the conductive solder 16 and the copper wire 7 are not so large. For this reason, the intermediate material 3 can be sufficiently applied to the connection between the conductive solder 16 and the cell ribbon 5 and the connection 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. The compression can be performed, and as a result, bubbles in this portion can be sufficiently removed, so that no bubbles remain in the intermediate member 3, and the appearance of the product is improved and the appearance is improved.

Further, since the conductive solder 16 has a small width, the conductive solder 16 laid therewith does not become an obstacle regardless of the position where the relay box 11 is provided. And the appearance is improved.

Furthermore, since the thickness of the conductive solder 16 is small, the thickness of the connection between the conductive solder 16 and the cell ribbon 5 and the thickness of the connection between the conductive solder 16 and the copper wire 7 are as described above. Therefore, the thickness of the intermediate member 3 for embedding these connection portions inside can be made thinner, so that the cost can be reduced.

If the total thickness of the two glass plates 1 and 2 constituting the laminated glass is the same, the thickness of one glass plate 2 is made larger than the thickness of the other glass plate 1. The use of glass improves wind pressure resistance as compared to a laminated glass in which two glass plates have the same thickness.

For example, in a laminated glass having a total thickness of 20 mm, a laminated glass of 15 mm + 5 mm is 10 mm
It can withstand 1.17 times the wind pressure of +10 mm laminated glass.

FIG. 4 is a longitudinal sectional view (corresponding to claims 1 and 2) of a second embodiment of the solar cell panel according to the present invention.

In FIG. 4, 17 is a tapered surface, 18 is a cylindrical surface,
19 is a bolt hole, 20 is a tapered part, 21 is a cylindrical part, 22
Is a buffer ring, 23 is a through hole, 24 is a hinge bolt, 2
5 is a female hinge bolt, 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 torso, 32 is a male screw, 33 is a bolt, 34 is a washer, 35 is a nut, 36 is mounting hardware, 37 is an arm, and 38 is a bolt. Hole, 39 is a through hole, 40,
41 is a washer, 42 is a lead wire, and 47 is butyl rubber.

In the embodiment of the solar cell panel according to the present invention, no relay box is provided on the glass plate 2, and a lead having one end connected to a conductive solder 16 oxidized and bonded to the inner surface of the glass plate 2. The line 42 represents the lid 27 of the hinge bolt female body 25 and the hinge bolt male body 29 and the hinge bolt male body 29 in the hinge bolt 24 attached to the glass plate 2.
Through the bolt 33 screwed to the outside.

In other words, as shown in FIG. 4, a tapered surface 17 having a maximum outer diameter on the outside O side and a diameter decreasing toward the indoor I side and a cylindrical surface connected to the reduced diameter portion of the tapered surface 17 are provided at the four corners of the glass plate 2. 18, a bolt hole 19 having a countersunk hole on the outdoor O side and a cylindrical hole on the indoor I side is formed so as to penetrate the glass plate 2 in the plate thickness direction.

The bolt hole 19 has a tapered portion 20 which is in close contact with the inner periphery of the countersunk hole portion of the bolt hole 19 and a cylindrical portion which is connected to the minimum diameter portion of the tapered portion 20 and which is in close contact with the cylindrical portion of the bolt hole 19. A buffer ring 22 having a portion 21 is fitted. The buffer ring 22 is provided with a through-hole 23 having a cross-sectional shape substantially similar to the external cross-sectional shape of the buffer ring 22 along the external shape.

In the through hole 23 of the buffer ring 22, a hinge bolt female body 25 of a hinge bolt 24 whose outer peripheral surface can come into close contact with the inner peripheral surface of the through hole 23 is fitted inside so as to protrude toward the room I side. ing. The hinge bolt female body 25 is provided with a hollow hemispherical seat 26 having an open side on the inside I of the glass plate 2.
A cover 27 is provided on the outside O side of the glass plate 2 of the female hinge bolt 25 so as to shield the inside of the hollow hemispherical seat 26 from the outside O side. Also, on the outer periphery of the cylindrical surface of the hinge bolt female body 25 projecting toward the room I side,
An external thread 28 is provided.

The male male hinge bolt 29 connected to the female female hinge bolt 25 has a hemispherical head 30 and this head 30
And a substantially inverted frusto-conical body portion 31 whose diameter increases as the distance from the head portion 30 increases, and a female screw 32 formed at an end of the body portion 31 opposite to the head 30 has a bolt 33. Can be screwed together.

In the hollow hole forming the hollow hemispherical seat 26 of the female hinge bolt body 25, a male male hinge bolt 29 is provided.
Of the hinge bolt male body 29 and the hinge bolt female body 25, the head 30 of the hinge bolt male body 29 slides against the hollow hemispherical seat 26 of the hinge bolt female body 25. Can move like a universal joint. The hinge bolt 24 described above is formed by the hinge bolt female body 25 and the hinge bolt male body 29, and the hinge bolt male body 29 projects from the hinge bolt female body 25 to the room I side.

A washer 34 is externally fitted to a portion of the female hinge bolt 25 protruding from the glass plate 2 toward the room I, and the washer 34 is attached to the male screw 2 of the female hinge bolt 25.
8 is fixed to the glass plate 2 by a nut 35 screwed to the glass plate 2.

The mounting hardware 36 supported by a predetermined structure
A bolt hole 38 is drilled at the tip of each of the arms 37, and a bolt 33 inserted into the bolt hole 38 is screwed into the female screw 32 of the male male bolt 29, so that the solar cell panel is hinged. It is fixed to the arm 37 via 24. Washers 40, 4 are provided between the arm 37 and the hinge bolt male body 29 and between the arm 37 and the head of the bolt 33.
1 is interposed.

In the hinge bolt 24, a through hole 39 is formed in the hinge 27 of the female body 25 of the hinge bolt, the axial center of the male hinge bolt 29, and the axial center of the bolt 33 so as to pass through the axial center. Is formed, and a lead wire 42 is inserted into the through hole 39 as a power supply line.

The glass plates 1 and 2 of the lead wire 42
One end on the middle side is connected to one end of the conductive solder 16 oxidized and bonded to the inner surface of the glass plate 2, and the other end of the lead wire 42 extends outward from the head of the bolt 33.

In the present embodiment, the current generated in the solar cell 4 is sent from the extending portion 5a of the cell ribbon 5 to the downstream side through the conductive solder 16 and the lead wire 42. .

In the embodiment of the present invention, similarly to the above-described embodiment, the conductive solder 16 is
There is no movement, kinking or disconnection during the production of the solar panel, so the production work is easy to do,
Good workability.

Since the thickness of the conductive solder 16 is small, the thickness of the connection between the conductive solder 16 and the cell ribbon 5 and the thickness of the connection between the conductive solder 16 and the lead wire 42 are not so large.

For this reason, when heating and pressing the glass plates 1 and 2 and the intermediate member 3, the intermediate member 3 is also connected to the connection between the conductive solder 16 and the cell ribbon 5 and the connection between the conductive solder 16 and the lead wire 42. Can be sufficiently compressed, and as a result, air bubbles in this part can be sufficiently removed,
The foam is not reduced in the intermediate material 3, the appearance of the product is improved, and the appearance is improved.

Further, since the conductive solder 16 has a small width, it does not become an obstacle, and the lead wire 42 is provided so as to penetrate the hinge bolt 24 in the axial direction. Therefore, also from these points, the appearance of the product is improved, and the appearance is improved.

Further, since the thickness of the conductive solder 16 is small, the thickness of the conductive solder 16 at the connection portion of the cell ribbon 5 and the thickness of the connection portion between the conductive solder 16 and the lead wire 42 are also reduced. Therefore, the thickness of the intermediate member 3 for embedding these connection portions inside can be made thinner, and thus the cost can be reduced.

FIG. 5 is a sectional view showing a third embodiment of the solar cell panel according to the present invention (corresponding to claims 1 and 3), and FIG.
FIG. 7 is a perspective view of the buffer ring shown in FIG. 5, and FIG. 7 is a perspective view of a washer in contact with the surface of the glass plate on the indoor side shown in FIG.

In FIG. 6, reference numeral 43 denotes a width 1 to 1 formed in the tapered portion 20 and the cylindrical portion 21 of the buffer ring 22 so as to extend vertically.
In FIG. 7, reference numeral 44 denotes a slit having a width of 1 to 2 mm formed in the radial direction of the washer 34, reference numeral 45 denotes a lead wire, and reference numeral 46 denotes butyl rubber.

In this embodiment, the lead wire 45 having one end connected to the conductive solder 16 oxidized and bonded to the inner surface of the glass plate 2 is provided with a slit 43 and a washer 34 formed in the buffer ring 22 as a power supply line. And extends out of the glass plate 2 through a slit 44 formed in the glass plate 2. The slit 44 is filled with butyl rubber 46 to bury the gap.

In the present embodiment, the current generated in the solar cell 4 is sent downstream from the extending portion 5a of the cell ribbon 5 through the conductive solder 16 through the lead wire 45. .

In this embodiment, as in the above-described embodiment, the same operation and effect as described above, that the workability is good, the appearance is good, and the cost can be reduced. Can be.

FIG. 8 is a sectional view (corresponding to claims 1 and 4) showing a fourth embodiment of the solar cell panel according to the present invention, and FIG.
FIG. 9 is a perspective view of a washer in contact with a surface of a glass plate on the indoor side shown in FIG. 8.

In this embodiment, the conductive solder 16
Are oxidized in a band-like manner 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 and passes through the glass plate 2.
In the portion of the outer surface of the wire, the wire passes between the slits 44 of the washer 34, and the lead wire 4
5 is connected, and the slit 44 is filled with butyl rubber 46 so as to fill the gap.

In the present embodiment, the electric current generated in the solar cell 4 is transmitted downstream from the extending portion 5a of the cell ribbon 5 through the conductive solder 16 through the lead wire 45. .

In this embodiment, as in the above-described embodiment, the workability is good and the appearance is good.
Moreover, cost can be reduced. Further, 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 outside the glass plate 2,
Work is easy and workability is further improved.

In FIGS. 4 to 9 described above, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

The present invention is not limited to the above-described embodiment, and it goes without saying that various studies can be made without departing from the spirit of the present invention.

[0086]

According to the solar cell panel of the present invention, various excellent effects can be obtained as described below.

I) Solder does not move, twist, or break when connecting the cell ribbon to the power supply line. Work for connecting the cell ribbon to the power supply line is easy, and workability is good.

II) The thickness of the connection between the solder and the cell ribbon and the connection between the solder and the feed line is not so large, and the solder is not prominent from the outside, so that the appearance is improved and the appearance is good.

III) Since the thickness of the intermediate member inserted between the plate members can be reduced, the cost can be reduced.

Further, 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 fourth aspect of the present invention, and the conductive solder extends to the outside of the plate-like body. Therefore, the connection with the cell ribbon and the power supply line is further facilitated, and the workability is further improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first example of an embodiment of a solar cell panel of the present invention.

FIG. 2 is an enlarged view of the relay box shown in FIG.

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 vertical sectional view of 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.

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.

FIG. 8 is a 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 in contact with a surface of a glass plate on the indoor side shown in FIG.

FIG. 10 is a general plan view of a solar cell panel.

11 is a view in the direction of arrows XI in FIG. 10;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 glass plate (plate-like body) 2 glass plate (plate-like body) 4 solar cell 5 cell ribbon 7 copper wire (power supply line) 11 relay box 13 terminal 16 conductive solder 19 bolt hole 24 hinge bolt 42 lead wire ( (Feed line) 45 Lead wire (Feed line)

Continuation of front page (72) Inventor Tetsuo Takehara 1-1-1 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture F-term in Asahi Glass Co., Ltd. 5F051 BA14 EA01 EA17 EA20 HA19 JA02 JA03 JA04 JA20

Claims (4)

[Claims] 1. A cell ribbon of a solar cell housed between two transparent plate-like bodies and a power supply line for transmitting electricity generated by the solar cell are provided on an inner surface of a predetermined plate-like body. A solar cell panel characterized by being connected by oxidatively-coupled conductive solder. 2. An oxidative bond between 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 connected by a conductive solder and the power supply line is inserted into a through-hole provided in an attachment member attached to the plate-like body. 3. The inner surface of the plate-shaped body is oxidized with a cell ribbon of a solar cell housed between two transparent plate-shaped bodies and a feeder line for extracting electricity generated by the solar cell to the outside. A solar cell panel which is connected by a connected conductive solder and laid in an axial direction on an outer peripheral portion of an attachment member attached to a plate-like body. 4. A method for connecting a cell ribbon of a solar cell housed between two transparent plate-shaped members and a power supply line for transmitting electricity generated by the solar cell with conductive solder. A solar cell panel wherein the solder of the conductive wire is oxidized to the outside of the plate along the inner periphery of the mounting member hole provided in the plate to mount the mounting member from the inner surface of the plate.