JP5214005B2 - Concentrating solar cell module and solar power generation system - Google Patents

Description

The present invention relates to a concentrating solar cell module and equipped with solar power systems it.

  An example of a conventional concentrating solar cell module is shown in FIGS. 11 to 13 (see, for example, Patent Document 1). 11 is a plan view showing an example of a wiring structure of a module substrate in a conventional solar cell module, FIG. 12 is a cross-sectional view taken along line GG in FIG. 11, and FIG. 13 is a cross-sectional view of a concentrating solar cell. It is.

  In this concentrating solar cell module, the module substrate 120a is preliminarily applied in a state where the wiring member 124 connecting the solar cell elements is covered with the insulating coating 125, and the concentrating solar cell 110 is disposed. Only the exposed wiring portions 121a and 121b as connection portions are installed in a state where they are not covered. In addition, an insulating sheet 122 is interposed between the module substrate 120a and the wiring material 124 in order to electrically insulate the wiring material 124 and the module substrate 120a.

  And the exposed heat radiation part 123 is arrange | positioned in the position pinched | interposed between the exposed wiring parts 121a and 121b of the module board | substrate 120a, and when the exposure heat radiation part 123 attaches the concentrating solar cell 110 to the module board | substrate 120a, It is located immediately below the solar cell element 111 and is connected to a heat radiating plate 118 directly below the solar cell element 111 in order to dissipate heat generated by the power generation of the solar cell element 111 to the outside.

  The terminals 116c and 116d of the concentrating solar cell 110 shown in FIG. 13 and the heat radiating plate 118 are reflow soldered to the exposed wiring parts 121a and 121b and the exposed heat radiating part 123 shown in FIGS. It is connected.

  Thereafter, although not shown in the drawing, in the state where the concentrating solar cell 110 is connected to the module substrate 120a, the periphery of the concentrating solar cell 110 and the connection portion between the concentrating solar cell 110 and the module substrate 120a. The space is filled with resin.

JP 2011-138970 A

  In the concentrating solar cell module described in Patent Document 1, a large number of wiring members 124 for connecting a large number of concentrating solar cells 110 (that is, the solar cell elements 111) are arranged on the module substrate 120a at regular intervals. It is necessary to lay in advance. That is, since it is necessary to perform all the operations such as the wiring process of all the electrodes and the mounting process of the concentrating solar cell on the module substrate 120a having a large size, a large work space is required and the work efficiency is poor. There was a problem.

The present invention has been made in order to solve the above problems, and its object is to provide a concentrating solar cell module and the solar power generation system having a superior electrode wiring structure in workability at the time of manufacture is there.

In order to solve the above-described problems, a concentrating solar cell module according to the present invention includes a plurality of solar cell elements and an elongated shape in which each of the solar cell elements is placed in one row with a constant interval A receiver substrate; and a module substrate on which a plurality of the receiver substrates are placed in parallel with a certain interval, the receiver substrate having an elongated receiver base and end portions on the receiver base With a plurality of wiring members arranged in a line along the longitudinal direction, with a positive electrode pad portion at one end of the wiring material and a negative electrode pad portion at the other end. There is provided, respectively, the positive electrode terminals and negative electrode terminals of the solar cell element to the plus electrode pad portion and the negative electrode pad portion that is connected to the solar cell element mounting portion is configured, respectively.

  According to the above configuration, the solar cell element can be mounted in a state of being electrically connected to the module substrate simply by mounting the receiver substrate on which the solar cell element is mounted on the module substrate. Mounting work becomes easy. Moreover, the heat dissipation effect by heat conduction can be expected by using an integral receiver substrate.

  Moreover, according to the concentrating solar cell module of this invention, it is set as the structure by which the bending part was formed in the longitudinal direction center part of the said wiring material.

  By forming the bent portion in this way, even if the wiring material expands and contracts due to solar heat, it can be absorbed by the bent portion, so that the wiring material does not break.

  Moreover, according to the concentrating solar cell module of this invention, it is good also as a structure where the notch part was formed in the said receiver base | substrate at predetermined intervals in the longitudinal direction. By forming the notch in the receiver base, thermal expansion can be prevented.

  Further, according to the concentrating solar cell module of the present invention, the plurality of receiver substrates are electrically connected at one end adjacent to each other by the wiring connecting material. ADVANTAGE OF THE INVENTION According to this invention, the module board by which each solar cell element was connected in series can be easily produced only by mounting a receiver board | substrate and a wiring connection material on a module board.

  Moreover, according to the concentrating solar cell module of this invention, the positioning means which mounts the said receiver board | substrate in the predetermined position of the said module board | substrate is provided. By providing the positioning means, the receiver substrate can be accurately placed at a predetermined position on the module substrate.

  More specifically, the positioning means includes positioning pins provided on the module substrate and positioning holes provided on the receiver substrate. According to the above configuration, the receiver substrate can be accurately placed at a predetermined position of the module substrate simply by inserting the positioning hole of the receiver base into the positioning pin of the module substrate.

  Moreover, according to the concentrating solar cell module of this invention, it is good also as a structure by which the heat conductive insulating layer was provided between the said receiver board | substrate and the said wiring material. According to the above configuration, not only electrical insulation, but also heat generated by energizing the wiring material can be radiated from the receiver substrate, and further from the receiver substrate to the module substrate, via the insulating layer. Bending or disconnection due to thermal expansion can be prevented.

  Moreover, according to the concentrating solar cell module of the present invention, the wiring material is covered with a first insulating protective layer, and the first insulating protective layer is the positive electrode pad portion of the wiring material. In addition, a connection opening is provided above the negative electrode pad. Thus, by providing the connection opening on the upper part of the plus electrode pad part and the minus electrode pad part, the minus electrode terminal of the solar cell element mounted with the plus electrode terminal connected on the plus electrode pad part and The negative electrode pad portion can be connected by wire bonding or the like through the connection opening.

  Further, according to the concentrating solar cell module of the present invention, the second insulating protective layer that is transparent on the whole including the opening for connection is formed on the first insulating protective layer. By providing a transparent second insulating protective layer on the entire first insulating protective layer, the solar cell element and the wire can be reliably protected.

  Moreover, according to the concentrating solar cell module of the present invention, an optical member having a plurality of condensing lens portions for concentrating sunlight on each of the solar cell elements is disposed on the module substrate. The configuration is made. According to the said structure, a high photoelectric conversion rate can be implement | achieved by a small light-receiving area by condensing sunlight to each solar cell element by each condensing lens part.

  Moreover, the solar power generation system of this invention is set as the structure by which the concentrating type solar cell module of said each structure is arrange | positioned in multiple numbers on a mount, and each solar cell module was connected with the electric cable.

  According to the present invention, a plurality of receiver boards in which a plurality of solar cell elements are connected in series in advance are prepared, the receiver boards are placed in parallel on the module board, and adjacent one ends are wired together. A concentrating solar cell module in which all solar cell elements are mounted on a receiver substrate can be produced simply by connecting with a connecting material. That is, a concentrating solar cell module having an electrode wiring structure excellent in workability at the time of manufacture can be produced.

It is an external appearance perspective view which shows the whole structure of the concentrating solar cell module of this invention. It is sectional drawing which follows the AA line of FIG. It is an expanded sectional view of the B section of FIG. It is the top view which looked at the lens board from the lower surface side (surface side facing a solar cell element). It is a top view of the module board | substrate of the state which removed the lens plate. (A) is a plan view showing the configuration of one receiver substrate, (b) is an enlarged plan view showing a part of FIG. (A), and (c) is one part of FIG. (D) is an enlarged plan view showing a portion D of FIG. (A), and (e) is an enlarged view of an E portion of FIG. (A). It is a top view shown. It is a disassembled perspective view which shows a mode that a receiver board | substrate is mounted in a module board. It is sectional drawing of the electrode part which shows 1 process of a manufacturing process. It is a schematic plan view which shows the wiring connection structure of one edge part of an adjacent receiver board | substrate. It is a perspective view which shows the external appearance structure of a solar energy power generation system. It is a top view which shows an example of the wiring structure of the module board | substrate in the conventional solar cell module. It is sectional drawing which follows the GG line of FIG. It is sectional drawing of the conventional concentrating solar cell.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view showing the overall configuration of the concentrating solar cell module of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. FIG. 3 is an enlarged cross-sectional view of a portion B in FIG.

  The concentrating solar cell module 1 according to the present embodiment is roughly classified into a module substrate 10 on which a plurality of solar cell elements 60 are mounted, and an upper portion of the module substrate 10. A lens plate (optical member) 30 provided with a plurality of condensing lens portions 31 for condensing sunlight, and the module substrate 10 and the lens plate 30 are arranged so as to be opposed to each other so as to surround the entire circumference. It is comprised with the frame frame 50 supported integrally.

  The frame frame 50 is composed of an upper frame member, a lower frame member, a left frame member, and a right frame member, and these frame members can be combined into a square and the butted portions of each corner can be connected with screws or the like. Since such a structure is a conventionally well-known general structure as a frame frame of a solar cell module, detailed description is omitted.

  FIG. 4 is a plan view of the lens plate 30 as viewed from the lower surface side (that is, the surface side facing the solar cell element 60). The condensing lens portion 31 formed on the lens plate 30 is a Fresnel lens in this example, and has a configuration in which, for example, eight Fresnel lenses are arranged in the vertical direction and five in the horizontal direction.

  FIG. 5 is a plan view of the module substrate 10 with the lens plate 30 removed.

  In this example, the module substrate 10 is composed of a long receiver substrate 11 in which eight solar cell elements 60 are placed in a row at a constant interval W1 in the longitudinal direction (vertical direction in the figure). Five are arranged in parallel with a certain interval W1 in the direction, and one end of the adjacent receiver substrate 11 is electrically connected by the wiring connecting member 25. That is, the module substrate 10 in which eight solar cell elements 60 are arranged in the vertical direction and five in the horizontal direction facing the condenser lens portion 31 provided on the lens plate 30 is manufactured. Moreover, all the solar cell elements 60 are connected in series by connecting all the receiver boards 11 in series via the wiring connection material 25.

  6A is a plan view showing the configuration of one receiver substrate 11, and FIG. 6B is an enlarged plan view showing a part (one wiring member portion) of FIG. 6A. 6 (c) is a plan view showing a part (electrode part) of FIG. 6 (b) further enlarged, and FIG. 6 (d) is a plan view showing an enlarged portion D of FIG. 6 (a). FIG. 6 and FIG. 6E are plan views showing the E portion of FIG.

  The receiver substrate 11 has a long receiver base 12 and a plurality of receiver bases 12 arranged in a line along the longitudinal direction with the ends facing each other on the receiver base 12 (in this example, solar cell elements). 7 wiring members (conductors) 13 which is one less than 60 (8). A thermally conductive insulating layer 18 is provided between the receiver base 12 and the wiring member 13. By providing the heat conductive insulating layer 18, not only electrical insulation, but also heat generated by energization of the wiring material 13 is transmitted via the insulating layer 18 to the receiver base 12 and further from the receiver base 12 to the module substrate 10. The wiring member 13 can be prevented from being bent or disconnected due to thermal expansion.

  Here, the receiver base 12 can use any of a stainless plate, a glass plate, a copper plate, an aluminum plate, and an aluminum alloy plate. Moreover, the insulating layer 18 is comprised by the heat conductive insulating film which mixed the heat conductive material (thermal conductive filler) in resin. As the resin, silicon resin, fluorine resin, polyimide resin, polyethylene resin / terephthalate (PET) resin, or the like can be used. In addition, as the thermally conductive filler that is an additive, any one of silicon nitride, aluminum nitride, alumina, magnesium oxide, boron nitride, beryllium oxide, silica, or a combination thereof can be used. The wiring member 13 can be a flat copper wire formed by punching a copper plate. The receiver base 12 can also be formed by punching, like the wiring member 13. However, the formation of the wiring member 13 and the receiver base 12 is not limited to punching.

  As shown in FIG. 6B, one wiring member 13 has a positive electrode pad portion 14 formed at one end portion and a negative electrode pad portion 15 opened in a bifurcated shape at the other end portion. Yes. And as shown in FIG.6 (c), as for the edge parts which the wiring material 13 adjacent to a longitudinal direction opposes, the plus electrode pad part 14 of one wiring material 13 is the forked shape of the other wiring material 13. The negative electrode pad portions 15 are arranged to face each other in an insulated state (with a certain gap).

  However, there is no adjacent wiring member 13 at the end of the wiring member 13 located at both ends of the receiver substrate 11 (upper and lower ends in FIG. 6A). Accordingly, as shown in FIGS. 6 (d) and 6 (e), the positive electrode pad portion small piece 14a and the negative electrode pad portion small piece 15a are arranged to face each other at the end portions. Thereby, the solar cell element 60 can be mounted in advance on the ends of the wiring member 13 located at both ends of the receiver substrate 11.

  In such an electrode wiring structure, as shown in FIG. 3, by mounting the solar cell element 60 on the positive electrode pad portion 14, the positive electrode terminal (not shown) on the bottom surface of the solar cell element 60 can be The negative electrode terminal (not shown) of the solar cell element 60 is connected to the negative electrode pad portion 15 by the wire 16 to constitute the solar cell element mounting portion 17. Further, the entire solar cell element mounting portion 17 is completely covered with the first insulating protective layer 19 and the transparent second insulating protective layer 20. Thereby, the solar cell element 60 and the wire 16 can be reliably protected.

  Further, as shown in FIG. 6B, the wiring member 13 has a substantially semicircular arc-shaped bent portion 13a formed at the center in the longitudinal direction. By forming the bent portion 13a, even if the wiring member 13 expands and contracts due to solar heat, it can be absorbed by the bent portion 13a, so that the electrode wiring structure of the solar cell element mounting portion 17 is not affected. It is possible to prevent disconnection or cracking of the wiring member 13 itself.

  In addition, as shown in FIG. 6A, the receiver base 12 is formed with a pair of notches 12a facing each other in the width direction at a plurality of locations having predetermined intervals in the longitudinal direction. The formation position of the notch portion 12a matches the position of the bent portion 13a of the wiring member 13 in this embodiment, but does not necessarily need to match. That is, each may be formed at a position slightly shifted in the longitudinal direction. The notch 12 a formed in the receiver base 12 is provided as a thermal expansion section in the longitudinal direction of the receiver base 12. That is, the solar cell elements 60 arranged on both ends of the notch 12a are irradiated with the condensed sunlight and generate heat, and a large thermal stress is applied to the central portion between the adjacent solar cell elements 60 due to the generated heat. However, the notch 12a becomes a thermal expansion section in the longitudinal direction to alleviate this thermal stress. That is, the receiver base 12 can have a function of absorbing thermal expansion.

  FIG. 7 shows how the receiver substrate 11 is mounted on the module substrate 10.

  As shown in FIG. 7, positioning means is provided between the module substrate 10 and the receiver substrate 11. In the present embodiment, the positioning means includes positioning pins 10 a provided on the module substrate 10 and positioning holes 12 b provided on the receiver base 12 of the receiver substrate 11. The positioning pins 10a are provided at two locations in the vicinity of both ends in the longitudinal direction along the mounting position of each receiver substrate 11 on the module substrate 10, and a total of 10 positioning holes 12b are opposed to the positioning pins 10a. As shown, the receiver base 12 is provided at two locations near both ends in the longitudinal direction. According to such a configuration, the receiver base body 12 can be obtained simply by inserting the two positioning holes 12 b facing the longitudinal direction of the receiver base 12 into the two positioning pins 10 a facing the longitudinal direction of the module substrate 10. That is, the receiver substrate 11 can be accurately placed at a predetermined position (position shown in FIG. 5) of the module substrate 10.

  Next, the manufacturing method of the concentrating solar cell module 1 having the above configuration will be described.

  First, the insulating layer 18 is disposed on the upper surface of the elongated receiver base 12 over the entire length in the longitudinal direction. Here, the insulating layer 18 is a thermally conductive insulating film obtained by adding boron nitride (thermoconductive filler) to polyimide resin.

  Next, the seven wiring members 13 are placed in one row on the insulating layer 18 of the receiver base 12 with the positive electrode pad portion 14 and the negative electrode pad portion 15 facing each other. At this time, as described above, as shown in FIGS. 6D and 6E, the wiring member 13 at the end portion is opposed to the outer end portion so as to face the plus electrode pad portion small piece 14a or the minus electrode pad. The small pieces 15a are arranged to face each other. Then, the wiring material 13 is covered with a first insulating protective layer 19 which is a protective film of a fluorine resist. At this time, as shown in FIG. 8, the first insulating protective layer 19 includes the plus electrode pad portion 14 (including the plus electrode pad portion small piece 14a) and the minus electrode pad portion 15 (the minus electrode pad portion small piece) of the wiring member 13. 15a (including 15a) is provided with connection openings 19a and 19b. In other words, except for the plus electrode pad portion 14 (including the plus electrode pad portion small piece 14a) and the minus electrode pad portion 15 (including the minus electrode pad portion small piece 15a), the portion in contact with the atmosphere is protected.

  Thereafter, the receiver base 12 on which the insulating layer 18, the wiring member 13, and the first insulating protective layer 19 are sequentially placed is inserted into a laminating apparatus (not shown) and maintained at a pressurized state, for example, at 120 ° C. Heat treatment is performed. Thereby, the elongate receiver board | substrate 11 made from aluminum in which the wiring material 13 was integrally formed by the lamination system is produced.

  Next, a solder material is laid on the plus electrode pad portion 14 (including the plus electrode pad portion small piece 14a) of the wiring member 13 of the receiver substrate 11 manufactured in this way through the connection opening portion 10a, and the solder material is formed thereon. The solar cell element 60 is mounted and heated and melted in a reflow furnace, whereby a positive electrode terminal (not shown) on the bottom surface of the solar cell element 60 is attached to the positive electrode pad portion 14 (including the positive electrode pad portion small pieces 14a). Connect with solder.

  Next, the negative electrode terminal (not shown) of the solar cell element 60 and the negative electrode pad portion 15 (including the negative electrode pad portion small piece 15a) are connected to a gold wire (by wire bonding) via the connection opening 19b. Wires 16 are connected (see FIG. 3). Thereby, the solar cell element mounting part 17 is comprised.

  In addition, although illustration is abbreviate | omitted, between the positive electrode pad part 14 (a positive electrode pad part small piece 14a is also included) and the negative electrode pad part 15 (a negative electrode pad part small piece 15a is also included), it is a solar cell element. In order to protect 60, a bypass diode is connected in parallel with the solar cell element 60.

  After that, the transparent insulating second protective layer 20 is further covered on the first insulating protective layer 19 to cover the whole, whereby the receiver substrate 11 having the electrode structure shown in FIG. 3 is manufactured.

  Next, the five receiver boards 11 produced in this way are placed in parallel on the module board 10 with a certain interval. That is, as shown in FIG. 7, two positioning holes 12 b facing each other in the longitudinal direction of each receiver substrate 11 are inserted into two positioning pins 10 a facing each other in the longitudinal direction of the module substrate 10. To do. At this time, the receiver substrate 11 is adhered and fixed to a predetermined position of the module substrate 10 by thinly applying a heat conductive adhesive on the back surface side of the receiver substrate 11 (that is, the back surface side of the receiver base 12). Secure with screws or rivets (not shown). Note that a metal material is used for the module substrate 10 in terms of strength.

  Next, as shown in FIG. 9, the positive electrode pad small pieces 14a and the negative electrode pad small pieces 15a facing each other at one end of the adjacent receiver substrate 11 are connected to each other by a wiring connecting member 25 such as a lead wire. . Thereby, the module substrate 10 having the electrode wiring structure shown in FIG. 5 is manufactured.

  Next, on the upper part of the module substrate 10 thus manufactured, the lens plate 31 provided with the condensing lens portion 31 is disposed oppositely, and integrally assembled so as to surround the entire circumference with the frame frame 50, The concentrating solar cell module 1 shown in FIGS. 1 and 2 is produced.

  According to the manufacturing method described above, a plurality of receiver substrates 11 on which the solar cell elements 60 are mounted are placed in parallel on the module substrate 10, and the adjacent one ends are sequentially connected by the wiring connecting member 25. The concentrating solar cell module 1 in which the individual solar cell elements 60 are connected in series can be easily manufactured.

  Further, as shown in FIG. 10, a plurality of the concentrating solar cell modules 1 are placed on a gantry 80 having an automatic solar tracking function, and each concentrating solar cell module 1 is connected with an electric cable (not shown). A solar power generation system can be constructed by connecting. In this example, the solar power generation system is capable of mounting a total of 28 concentrating solar cell modules 1, four vertically and seven horizontally on the gantry 80.

  This solar power generation system is mounted on a tracking drive system 81 that can be driven so that the light-receiving surface always faces the sun in accordance with the movement of the sun.

  The tracking drive system 81 includes two separate tracking drive devices, an azimuth axis for directing the module light-receiving surface toward the sun's azimuth and a tilt axis for tilting the module light-receiving surface at the sun's altitude. Can be tracked with high accuracy. As the tracking drive system, the module is installed so that the tilting axis that tilts to the latitude angle every day according to the solar altitude that varies from day to day, and the concentrating photovoltaic module surface is parallel to the tilting axis direction. A system composed of a two-axis drive device in which the module is rotated around the tilt axis is also common, and such a system may be used.

  As a power system for a tracking drive system, a motor and a speed reducer are used to rotate a gear at a predetermined rotational speed to drive it in a predetermined direction, or a hydraulic pump and a hydraulic cylinder are used to achieve a predetermined length. There is a method of driving in a predetermined direction by adjusting the cylinder, and either method may be used.

  As a control system (not shown) for controlling the operation of the tracking drive system, a solar orbit is calculated in advance by a clock mounted in the control system so that the concentrating solar cell module 1 faces in the direction. A control method, a method of attaching a solar sensor such as a photodiode to the system, and monitoring and controlling the sun direction as needed are generally used, and either method may be used.

  It should be noted that the embodiment disclosed herein is illustrative in all respects and does not serve as a basis for limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. Moreover, all the changes within the meaning and range equivalent to a claim are included.

DESCRIPTION OF SYMBOLS 1 Condensing type solar cell module 10 Module board | substrate 10a Positioning pin 11 Receiver board | substrate 12 Receiver base | substrate 12a Notch part 12b Positioning hole 13 Wiring material 13a Bending part 14 Positive electrode pad part 15 Negative electrode pad part 16 Wire 17 Solar cell element mounting part DESCRIPTION OF SYMBOLS 18 Insulating layer 19 1st insulating protective layer 20 2nd insulating protective layer 25 Wiring connection material 25a Positive electrode pad part 25b Negative electrode pad part 30 Lens board (optical member)
31 Condensing lens part 50 Frame frame 60 Solar cell element 80 Base 81 Tracking drive system

Claims (10)

A plurality of solar cell elements, a long receiver substrate in which each of the solar cell elements is placed in one row with a fixed interval, and a plurality of the receiver substrates in parallel with a fixed interval And a module substrate mounted on
The receiver substrate is composed of a long receiver base and a plurality of wiring members arranged in a line along the longitudinal direction with the ends facing each other on the receiver base.
The wiring member is formed with a bent portion at a central portion in the longitudinal direction,
A positive electrode pad portion is provided at one end of the wiring member, and a negative electrode pad portion is provided at the other end. The positive electrode terminal of the solar cell element and the negative electrode pad portion A concentrating solar cell module, wherein a negative electrode terminal is connected to form a solar cell element mounting portion. The concentrating solar cell module according to claim 1 ,
The concentrating solar cell module, wherein the receiver base is formed with notches at a predetermined interval in the longitudinal direction. The concentrating solar cell module according to claim 1 or 2 , wherein
The concentrating solar cell module, wherein the plurality of receiver substrates are electrically connected at one end to each other with a wiring connecting material. It is a concentrating solar cell module of any one of Claim 1- Claim 3 , Comprising:
A concentrating solar cell module comprising positioning means for placing the receiver substrate at a predetermined position of the module substrate. The concentrating solar cell module according to claim 4 ,
The concentrating solar cell module, wherein the positioning means includes positioning pins provided in the module substrate and positioning holes provided in the receiver substrate. The concentrating solar cell module according to any one of claims 1 to 5 , wherein
A concentrating solar cell module, wherein a thermally conductive insulating layer is provided between the receiver substrate and the wiring member. The concentrating solar cell module according to any one of claims 1 to 6 , wherein
The wiring material is covered with a first insulating protective layer, and the first insulating protective layer has a connection opening provided above the plus electrode pad portion and the minus electrode pad portion of the wiring material. A concentrating solar cell module, characterized in that The concentrating solar cell module according to claim 7 ,
A concentrating solar cell module, wherein a transparent second insulating protective layer is formed on the first insulating protective layer including the connection opening. The concentrating solar cell module according to any one of claims 1 to 8 , wherein
A concentrating solar cell module, wherein an optical member having a plurality of condensing lens portions for concentrating sunlight on each of the solar cell elements is disposed on the module substrate. A photovoltaic power generation, wherein a plurality of concentrating solar cell modules according to any one of claims 1 to 9 are arranged on a mount and each solar cell module is connected by an electric cable. system.

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