TW201637349A - Photoelectric conversion module group and photoelectric conversion device - Google Patents

Abstract

The purpose of the present invention is to connect multiple photoelectric conversion modules together in a foldable manner and to ensure improved reliability in the connection between the photoelectric conversion modules and rigidity of the photoelectric conversion modules. The present invention provides a photoelectric conversion module group 10 of multiple arrayed photoelectric conversion modules 11, having: rigid substrates 13 which are disposed so as to correspond to the multiple photoelectric conversion modules 11 on the opposite side of the photoelectric conversion modules 11 from the light-receiving surfaces and are electrically connected to the corresponding photoelectric conversion modules 11; and flexible substrates 14 which connect the rigid substrates 13 together.

Description

Photoelectric conversion module group and photoelectric conversion device

The present invention relates to a photoelectric conversion module group and a photoelectric conversion device.

In recent years, the demand for portable power generators has been increasing in order to allow users to use portable devices such as smart phones, notebook computers, and tablet computers even in an environment where there is no commercial power supply.

For example, Patent Document 1 discloses a sheet (photoelectric conversion module group) in which a plurality of photoelectric conversion modules (solar cells) are arranged at a predetermined interval by sandwiching a sheet-like transparent film member having flexibility and elasticity. The battery unit) and the flexible conductive member connecting the solar battery cells. According to such a sheet, the sheet can be unfolded, and the electric power generated by the solar battery unit can be taken out and used by an external device. Moreover, when it is not used, the sheet can be folded and stored and conveyed easily.

A technique of connecting a photoelectric conversion module by a flexible conductive member, for example, Patent Document 2 discloses a technique of connecting a terminal of a photoelectric conversion module with a flexible cable. Further, Patent Document 3 discloses a technique in which a plurality of photoelectric conversion modules are arranged on an elastic substrate and connected.

Patent Document 1: Japanese Patent Laid-Open No. Hei 9-51118

Patent Document 2: Japanese Patent No. 5324147

Patent Document 3: Japanese Patent Laid-Open Publication No. 2011-077361

In the technique disclosed in Patent Document 2, the connection portion between the terminal of the photoelectric conversion film group and the cable is liable to be broken, and there is a problem that the connection reliability is lowered.

According to the technique disclosed in Patent Document 3, the plurality of photoelectric conversion modules arranged on the elastic substrate are connected to each other through the elastic substrate, so that the connection reliability can be improved. However, in the technique disclosed in Patent Document 3, since the elastic conversion substrate is supported by the photoelectric conversion module, there is a problem that the rigidity of the photoelectric conversion module cannot be sufficiently ensured. In particular, in recent years, photoelectric conversion modules have been thinned, and securing rigidity has become an important issue.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a photoelectric conversion module group and a photoelectric conversion device, which enable a plurality of photoelectric conversion modules to be foldably connected, and which can improve connection reliability and ensure rigidity of the photoelectric conversion module.

The inventor of the present invention carefully conducted the review for the purpose of solving the above problems. Then, the inventor of the present invention conceived a photoelectric conversion module corresponding to each plural number, and provided a rigid substrate on the opposite side of the light receiving surface of the photoelectric conversion module, and electrically connected to the photoelectric conversion module, and additionally utilized a flexible conductive member. By connecting two rigid substrates, the plurality of photoelectric conversion modules are foldably connected, and the connection reliability can be improved and the rigidity of the photoelectric conversion module can be ensured.

The object of the present invention is to effectively solve the above problems. The photoelectric conversion module group of the present invention is arranged with a plurality of photoelectric conversion modules, including: a hard base The board is disposed on the opposite side of the light receiving surface of the photoelectric conversion module corresponding to each of the plurality of photoelectric conversion modules, and is electrically connected to the corresponding photoelectric conversion module; and the flexible conductive member is connected to the two Hard substrate. In this way, since the two rigid substrates are connected by a flexible conductive member, the photoelectric conversion module group can be folded in units of the photoelectric conversion module. Moreover, since the elastic substrate is connected to the photoelectric conversion module through the rigid substrate, the connection reliability of each connection portion can be improved. Moreover, since the rigid substrate has high rigidity and can be used as a reinforcing material, it is expected to increase the rigidity of the photoelectric conversion module.

Further, an object of the present invention is to effectively solve the above problems, and the rigid substrate is composed of a plurality of layers, and the conductive member is preferably connected to the rigid substrate in an inner layer of the rigid substrate. In this case, it is expected that the connection reliability between the rigid substrate and the conductive member can be improved. Further, the position of the conductive member in the thickness direction can be adjusted, and the degree of freedom in folding of the photoelectric conversion module group can be ensured.

Further, an object of the present invention is to effectively solve the above problems, and the conductive member is integrally formed with the rigid substrate, and it is preferable to constitute a hard elastic substrate. In this case, it is expected that the connection reliability between the rigid substrate and the conductive member can be improved.

Further, an object of the present invention is to effectively solve the above problems, and the conductive member is preferably an elastic substrate, an elastic flat cable, a mesh wire, a metal film or a film tape. In this case, the photoelectric conversion module group can be folded in units of photoelectric conversion modules.

Further, an object of the present invention is to effectively solve the above problems, and it is preferable that the rigid substrate is a shape in which a part of the field is hollowed out. In this case, the rigidity of the photoelectric conversion module can be ensured, and the weight can be reduced.

Moreover, an object of the present invention is to effectively solve the above problems. The conductive member is disposed at a center in a vertical direction from which the rigid substrate and the photoelectric conversion module overlap, and the hard substrate overlaps the photoelectric conversion module upward and downward, respectively. The position within 40% of the thickness is preferred. In this case, it is expected that the connection reliability between the rigid substrate and the conductive member can be improved.

Moreover, an object of the present invention is to effectively solve the above problems. The photoelectric conversion device of the present invention is provided with the photoelectric conversion module group of any of the above, and receives a photoelectric conversion module from the mounted photoelectric conversion module group. Electricity.

Moreover, an object of the present invention is to effectively solve the above problems, and the photoelectric conversion device includes: a first connector in which a second connector connectable to the first connector is provided in the photoelectric conversion module group, It is preferable that the second connector is provided on the rigid substrate. In this case, the photoelectric conversion module group can be connected by a simple operation of inserting the second connector into the first connector. Moreover, since the second connector is provided on the rigid substrate, the mounting becomes easy.

According to the photoelectric conversion module group and the photoelectric conversion device of the present invention, the plurality of photoelectric conversion modules are foldably connected, and the connection reliability can be improved and the rigidity of the photoelectric conversion module can be ensured.

1‧‧‧ photoelectric conversion device

2‧‧‧ interface

2a‧‧‧Connector

3‧‧‧ device body

10‧‧‧ photoelectric conversion module group

11, 11a, 11b, 11c‧‧‧ photoelectric conversion module

12‧‧‧Lighted exterior materials

13, 13a, 13b‧‧‧ rigid substrate

14, 14a, 14b‧‧‧ elastic substrate

15‧‧‧Back exterior materials

16‧‧‧External materials

17‧‧‧Transparent components

19‧‧‧Connector

21‧‧‧Perforation

22‧‧‧ latch

26, 26a, 26b, 26c‧‧‧ transparent components

Fig. 1 is an exploded perspective view showing the main part of a photoelectric conversion module group according to an embodiment of the present invention.

Fig. 2A is a cross-sectional view showing the photoelectric conversion module group shown in Fig. 1 and an example of a five-layer rigid substrate.

FIG. 2B is a cross-sectional view showing the photoelectric conversion module group shown in FIG. An example of a two-layer rigid substrate.

Fig. 3 shows a case where the rigid substrate and the elastic substrate shown in Fig. 1 constitute a hard elastic substrate.

Fig. 4 is a view showing another example of the composition of the rigid substrate shown in Fig. 1.

Fig. 5 is a view showing an overview of a photoelectric conversion device according to an embodiment of the present invention.

Fig. 6 is a view showing an overview of a photoelectric conversion device according to an embodiment of the present invention.

Fig. 7 shows the appearance of the interface shown in Fig. 6.

Fig. 8 is a view showing another configuration example of the rigid substrate shown in Fig. 1.

Fig. 9 is a view showing another configuration example of the rigid substrate shown in Fig. 1.

Fig. 10A is a view showing another configuration example of the rigid substrate shown in Fig. 1.

Fig. 10B is a view showing another configuration example of the rigid substrate shown in Fig. 1.

Fig. 11 is a top view showing a connecting portion between the rigid substrate and the flexible substrate shown in Fig. 1.

Hereinafter, embodiments of the present invention will be described.

Fig. 1 is an exploded perspective view showing the configuration of a main part of a photoelectric conversion module group 10 according to an embodiment of the present invention. The photoelectric conversion module group 10 of the present embodiment is connected to the device body of the photoelectric conversion device, and supplies electric power to the device body. The photoelectric conversion device that receives the power supply charges the rechargeable battery in the device itself or supplies the power to an external device of the connection device itself.

The photoelectric conversion module group 10 shown in Fig. 1 has a plurality of photoelectric conversion modules 11 (11a to 11c), a light-receiving surface exterior material 12, a plurality of rigid substrates 13 (13a to 13c), and a plurality of elastic substrates 14 ( 14a, 14b), rear exterior material 15.

The photoelectric conversion module 11 includes a solar cell that converts incident light such as sunlight or indoor light into electric power.

The types of solar cells are roughly classified into inorganic materials using inorganic materials and organic materials using organic materials. Inorganic solar cells include Sis using Si, compounds using compounds, and the like. Organic solar cells include low molecular vapor deposition using organic pigments, polymer coating using conductive polymers, and coatings such as coating conversion using a conversion semiconductor, and titanium, organic dyes, and electrolytes. Pigment sensitization and the like. Further, the solar cell includes an organic-inorganic hybrid solar cell, a solar cell using a perovskite compound, and the like. In the present invention, various solar cells described above can be used. However, in general, organic solar cells are capable of forming a thin and flexible structure suitable for use in the present invention.

In the photoelectric conversion module group 10 shown in Fig. 1, the photoelectric conversion modules 11a to 11c are arranged at intervals in a predetermined direction. Further, in the present embodiment, an example has been described in which the number of photoelectric conversion modules 11 constituting the photoelectric conversion module group 10 is three, but the present invention is not limited thereto. The number of the photoelectric conversion modules 11 constituting the photoelectric conversion module group 10 may be 2 or more.

The light-receiving surface of the photoelectric conversion module 11 is provided with a light-receiving surface exterior material 12 and has flexibility to protect the light-receiving surface of the photoelectric conversion module 11. The diaphragm-shaped transparent members 26a, 26b, and 26c are provided in portions of the light-receiving exterior material 12 corresponding to the photoelectric conversion modules 11a, 11b, and 11c, respectively. In addition, in the first drawing, one member of the photoelectric conversion module 11 in which the light-receiving surface exterior material 12 is covered is shown, but it may be provided corresponding to each photoelectric conversion module 11. In addition, the following is collectively referred to as transparent without distinguishing the transparent members 26a, 26b, and 26c. Member 26.

A rigid substrate 13 is provided on the opposite side (back side) of the light receiving surface of the photoelectric conversion module 11. The rigid substrate 13 is a substrate having high rigidity. In the photoelectric conversion module group 10 shown in Fig. 1, the rigid substrates 13a to 13c are provided corresponding to the photoelectric conversion modules 11a to 11c, respectively. The photoelectric conversion module 11 is electrically connected to the corresponding rigid substrate 13 .

The elastic substrate 14 is a flexible conductive member, and the two rigid substrates 13 are connected to each other. In the photoelectric conversion module group 10 shown in Fig. 1, the elastic substrate 14a is connected to the rigid substrate 13a and the rigid substrate 13b, and the elastic substrate 14b is connected to the rigid substrate 13b and the rigid substrate 13c. As described above, the rigid substrates 13a to 13c are electrically connected to the photoelectric conversion modules 11a to 11c, respectively. Therefore, in the photoelectric conversion module group 10, the photoelectric conversion modules 11a to 11c are connected in series in order.

On the back side of the rigid substrate 13 and the elastic substrate 14, a flexible back surface exterior material 15 is provided to protect the impact from the outside.

As described above, in the photoelectric conversion module group 10 of the present embodiment, the rigid substrates 13 are connected by a flexible conductive member (that is, the elastic substrate 14). Further, since the light-receiving exterior material 12 and the back surface exterior material 15 are also flexible, the photoelectric conversion module group 10 can be folded in units of the photoelectric conversion module 11.

Further, in the photoelectric conversion module group 10 of the present embodiment, the photoelectric conversion module 11 is electrically connected to the rigid substrate 13. Therefore, the connection reliability between the photoelectric conversion module 11 and the rigid substrate 13 can be improved. Moreover, since the rigidity of the rigid substrate 13 is high, the function as the reinforcing material of the photoelectric conversion module 11 can be exhibited, and the rigidity of the photoelectric conversion module 11 can be improved.

2A and 2B are cross-sectional views of the photoelectric conversion module group 10 along the direction in which the photoelectric conversion modules 11 are arranged.

As shown in FIGS. 2A and 2B, the photoelectric conversion module 11 is laminated on the rigid substrate 13. Further, the rigid substrates 13 are connected to each other through the elastic substrate 14. The back side of the rigid substrate and the elastic substrate 14 is covered by the back exterior material 15. A portion of the photoelectric conversion module 11 corresponding to the light receiving surface is covered by the transparent member 26. Further, a portion other than the light receiving surface of the photoelectric conversion module 11 (a portion not covered by the transparent member 26) and a front side of the elastic substrate 14 are covered by the light receiving surface covering member 12.

In this manner, by connecting the photoelectric conversion module 11 to the elastic substrate 14 through the rigid substrate 13, the connection reliability of each connection portion can be improved.

Further, for example, the thickness of the light-receiving surface exterior material 12 is 0.5 mm, the thickness of the photoelectric conversion module 11 is 0.5 mm, the thickness of the rigid substrate 13 is 1.0 mm, and the thickness of the elastic substrate 14 is 0.1 mm, and the back surface exterior material 15 is 15 mm. The thickness is 0.5 mm. When the photoelectric conversion module group 10 is folded by the light-receiving outer surface member 12 and the rear surface outer material 15, the curvature R of the elastic substrate 14 can be relaxed.

Generally, the rigid substrate 13 is composed of a plurality of layers such as a + electrode layer, an electrode layer, and a solder resist layer. Fig. 2A shows an example in which the rigid substrate 13 is composed of five layers and the thickness of each layer is the same. Fig. 2B shows an example in which the rigid substrate 13 is composed of two layers and the thickness of each layer is different.

As shown in FIGS. 2A and 2B, the elastic substrate 14 is preferably connected to the rigid substrate 13 in the inner layer of the rigid substrate 13. As a result, the position of the elastic substrate 14 in the thickness direction can be adjusted. The positional adjustment of the thickness direction of the elastic substrate 14 is heavy to ensure the folding degree of freedom of the photoelectric conversion module group 10. need. Moreover, it is expected that the connection reliability between the rigid substrate 13 and the elastic substrate 14 can be improved.

In addition, although the rigid substrate 13 and the elastic substrate 14 have been described separately, the present invention is not limited thereto. A hard elastic substrate in which the rigid substrate 13 and the elastic substrate 14 are integrally formed can also be used.

In the hard elastic substrate, as shown in Fig. 3, the rigid substrates 13 are spaced apart at a predetermined interval, with one elastic substrate 14 interposed therebetween. Therefore, the elastic substrate 14 is provided on the inner layer of the rigid substrate 13, and thus it is expected that the connection reliability between the elastic substrate 14 and the rigid substrate 13 can be improved. Moreover, since the elastic substrate 14 is provided in the inner layer of the rigid substrate 13, noise can be suppressed. Further, the through holes 21 penetrating the rigid substrate 13 and the elastic substrate 14 are formed, and the pins 22 are inserted into the through holes 21 and welded, whereby the strength can be improved.

Further, in the present embodiment, the elastic substrate 14 is used as the conductive member for connecting the two rigid substrates 13, but the present invention is not limited thereto. As the conductive member that connects the two rigid substrates 13, an elastic flat cable, a mesh wire, a metal film (copper foil, silver foil, etc.), a film tape (copper tape, etc.), or the like can be used.

Further, in the present embodiment, the rigid substrate 13 covers the entire back surface of the photoelectric conversion module 11, but the invention is not limited thereto. For example, as shown in FIG. 4, the rigid substrate 13 may be a hollowed out structure having a part of the area. With this configuration, the function of the reinforcing material can be realized, and at the same time, it is expected to be lightweight. Further, when the back surface exterior material 15 is bent in the field of hollowing out the rigid substrate 13, a film layer may be provided between the rigid substrate 13 and the back surface exterior material 15. In this way, it is possible to suppress the back outer casing 15 from being bent.

Figure 5 shows the photoelectric change in which the photoelectric conversion module group 10 is mounted. An overview of the device 1.

As shown in FIG. 5, the photoelectric conversion device 1 includes a photoelectric conversion module group 10, an interface 2, and a device body 3. The photoelectric conversion module group 10 is connected to the device body 3 through the interface 2. Although not described in the interior of the apparatus main body 3, a mechanism for storing electric power supplied from the outside or an external device connected to a predetermined interface (not shown) such as a USB (Universal Serial Bus) is provided. mechanism. Then, the photoelectric conversion device 1 stores the electric power supplied from the photoelectric conversion module group 10 through the interface 2, and the electric power or the stored electric power supplied from the photoelectric conversion module group 10 to the external device connected.

Here, as shown in FIG. 5, the photoelectric conversion module group 10 is deployed to receive incident light in a state where the transmission interface 2 is electrically or mechanically connected to the apparatus body 3 of the photoelectric conversion device 1.

As described above, the photoelectric conversion modules 11a to 11c are connected in series in the arrangement order. Then, as shown in FIG. 5, one of the photoelectric conversion modules 11a to 11c is connected to the apparatus body 3 of the photoelectric conversion device 1 through the interface 2. Therefore, the sum of the electric powers respectively generated by the photoelectric conversion modules 11a to 11c is supplied to the apparatus main body 3 of the photoelectric conversion device 1 through the interface 2.

On the other hand, when not in use (at the time of storage), as shown in Fig. 6, the photoelectric conversion module group 10 is folded. Therefore, it is easy to store and transport, and it is expected to improve convenience.

Further, the connection mode of the interface 2 and the photoelectric conversion module group 10 is, for example, a connection method using a USB connector. In this manner, as shown in Fig. 7, a connector 2a (first connector) having a socket structure is provided on one surface of the interface 2. Further, the photoelectric conversion module group 10 is provided with a connector (second connector) having a plug structure. With this configuration, the interface 2 can be connected to the photoelectric conversion module group 10 by a simple operation of inserting the second connector into the first connector.

Fig. 8 shows an example in which a connector (second connector) is attached to the photoelectric conversion module group 10. As shown in Fig. 8, the connector 19 of the plug structure is provided on the rigid substrate 13 (the inner layer of the rigid substrate 13). In addition, in FIG. 8, the upper surface of the rigid substrate 13 and the elastic substrate 14 is covered with the exterior material 16, and the lower surface of the rigid substrate 13 and the elastic substrate 14 is covered by the back surface exterior material 15.

Generally, in order to mount the connector 19, the mounting portion of the connector 19 requires a certain degree of rigidity. Since the rigid substrate 13 has rigidity, mounting the connector 19 to the rigid substrate 13 as in the present embodiment makes the mounting of the connector 19 easy.

Fig. 9 shows another example of mounting of the connector 19. As shown in FIG. 9, the rigid substrate 13 to which the photoelectric conversion module 11 is connected and the rigid substrate 13 to which the photoelectric conversion module 11 is not connected are connected by the elastic substrate 14, and the rigid substrate 13 to which the photoelectric conversion module 11 is not connected is connected. A connector 19 may be provided on the inner layer of the rigid substrate 13.

In the present embodiment, an example in which the light-receiving surface exterior material 12 is provided on the light-receiving surface side of the photoelectric conversion module 11 is used, but the invention is not limited thereto.

For example, as shown in FIG. 10A, the light-receiving surface exterior material 12 is removed, and a transparent transparent member 17 is used to cover the entire surface of the photoelectric conversion module 11 and a part of the elastic substrate 14, and the outer material 16 is not covered. A portion of the elastic substrate 14 covered by the transparent member 17. Hereinafter, the rigid substrate 13 and the elastic substrate 14 are covered with the back exterior material 15.

Further, for example, as shown in FIG. 10B, the light-receiving surface exterior material 12 is removed, and the portion 16 and the elastic substrate 14 which are not covered by the photoelectric conversion module 11 are covered by the material 16 other than the material. Hereinafter, the rigid substrate 13 and the elastic substrate 14 are covered with the back exterior material 15. Further, in FIGS. 10A and 10B, an example in which the rigid substrate 13 is five layers is shown, but the rigid substrate 13 is not limited thereto, and for example, as shown in FIG. 2B, the rigid substrate 13 has a two-layer structure.

Fig. 11 is a cross-sectional view showing a connection portion between the rigid substrate 13 and the elastic substrate 14.

The thickness of the rigid substrate 13 and the photoelectric conversion module 11 in the vertical direction is assumed to be 100%, and the elastic substrate 14 is set to be 40% up and down from the center of the vertical direction after the hard substrate 13 and the photoelectric conversion module 11 are stacked. The range is good. With this configuration, it is expected that the connection reliability of the connection portion between the rigid substrate 13 and the elastic substrate 14 can be improved.

The present invention has been described in terms of the drawings and embodiments, and various modifications and changes can be made by those skilled in the art. Accordingly, such modifications or variations are intended to be included within the scope of the present invention. For example, the functions and the like included in each block can be reconfigured without logical contradiction, and the plural blocks can be merged into one or divided.

According to the present invention, it is possible to provide a photoelectric conversion module group and a photoelectric conversion device, which are capable of connecting a plurality of photoelectric conversion modules in a foldable manner, and can improve connection reliability between the photoelectric conversion modules and ensure photoelectric conversion modules. Rigidity.

10‧‧‧ photoelectric conversion module group

11a, 11b, 11c‧‧‧ photoelectric conversion module

12‧‧‧Lighted exterior materials

13, 13a, 13b‧‧‧ rigid substrate

14a, 14b‧‧‧elastic substrate

15‧‧‧Back exterior materials

26a, 26b, 26c‧‧‧ transparent components

Claims (8)

A photoelectric conversion module group, wherein a plurality of photoelectric conversion modules are arranged, comprising: a rigid substrate disposed on an opposite side of a light receiving surface of the photoelectric conversion module corresponding to each of the plurality of photoelectric conversion modules, and corresponding photoelectric The conversion module is electrically connected; and the flexible conductive member connects the two rigid substrates. The photoelectric conversion module group according to claim 1, wherein the rigid substrate is composed of a plurality of layers, and the conductive member is connected to the rigid substrate in an inner layer of the rigid substrate. The photoelectric conversion module group according to claim 1 or 2, wherein the conductive member is integrally formed with the rigid substrate to constitute a hard elastic substrate. The photoelectric conversion module group of claim 1, wherein the conductive member is an elastic substrate, an elastic flat cable, a mesh wire, a metal film or a film tape. The photoelectric conversion module group according to claim 1, wherein the rigid substrate is a shape in which a part of the field is hollowed out. The photoelectric conversion module group according to claim 1, wherein the conductive member is disposed at a center in a vertical direction overlapping the rigid substrate and the photoelectric conversion module, and the hard substrate and the photoelectric are respectively upward and downward. The position within 40% of the thickness of the overlap of the transformation modules. A photoelectric conversion device is provided with a photoelectric conversion module group as described in claim 1 of the patent application, and receives power from a photoelectric conversion module in the mounted photoelectric conversion module group. The photoelectric conversion device of claim 7, comprising: In the first connector, the photoelectric conversion module group is provided with a second connector connectable to the first connector, and the second connector is provided on the rigid substrate.