Photoelectric conversion module

Abstract

A photoelectric conversion module (1a) comprises a panel (10) and a frame (20). The panel (10) includes a photoelectric conversion element. The panel (10) has a surface (10a) at which light is received from the outside of the photoelectric conversion module (1a) or at which light is emitted to the outside of the photoelectric conversion module (1a). The frame (20) is positioned along an outer edge part of the panel (1), and the panel (10) is attached to the frame (20). The frame (20) has a ventilation passage (22). The ventilation passage (22) includes a first opening (22a) and a second opening (22b). The first opening (22a) and the second opening (22b) are formed at positions that are closer in the thickness direction of the panel (10) to the outside of the photoelectric conversion module (1a) than the surface (10a).

Description

Photoelectric conversion module

[0001] The present disclosure relates to a photoelectric conversion module.

[0002] Conventionally, techniques for promoting heat dissipation in photoelectric conversion modules such as solar cell modules are known.

[0003] For example, Patent Document 1 describes a solar cell module including a solar cell panel, cooling fins, and a plurality of ventilation openings. The solar cell panel is mounted on the upper side of a quadrangular frame disposed obliquely. The cooling fins are a plurality of vertical cooling fins mounted on the back surface of the solar cell panel. The plurality of ventilation openings are provided in the lower frame and the upper frame of the frame and communicate with the fins.

[0004] Patent Document 2 describes a solar cell module in which a frame having a plurality of ventilation openings is provided at the peripheral edge of a main body that generates electricity. On the back side of the frame and / or the main body, a plurality of sets of partition portions are provided so that the intervals gradually become narrower from the peripheral edge of the main body toward the center of the back surface of the main body with the ventilation openings interposed therebetween.

[0005] Japanese Patent Application Laid-Open No. 9-83003, Japanese Patent Application Laid-Open No. 2004-228429

[0006] The techniques described in the above patent documents promote heat dissipation by generating an air flow on the back side of the solar cell panel, and there is room for reexamination from the viewpoint of suppressing an increase in the temperature of the frame of the photoelectric conversion module. Therefore, the present disclosure provides a novel photoelectric conversion module advantageous from the viewpoint of suppressing an increase in the temperature of the frame of the photoelectric conversion module.

[0007] The present disclosure provides a photoelectric conversion module including a photoelectric conversion element, a panel having a surface for receiving light from the outside or emitting light to the outside of the photoelectric conversion module, and a frame disposed along an outer edge portion of the panel to which the panel is attached. The frame has a ventilation path, and the ventilation path includes a first opening and a second opening formed at a position closer to the outside than the surface in the thickness direction of the panel, and extends between the first opening and the second opening.

[0008] The photoelectric conversion module disclosed herein is advantageous in that it suppresses the temperature rise of the frame of the photoelectric conversion module.

[0009] Figure 1 is a schematic perspective view showing an example of a photoelectric conversion module according to this embodiment. Figure 2 is a plan view of the photoelectric conversion module shown in Figure 1. Figure 3 is a cross-sectional view of the photoelectric conversion module with line III-III in Figure 2 as the cutting line. Figure 4A is a schematic diagram showing an example of a ventilation path in the photoelectric conversion module according to this embodiment. Figure 4B is a schematic diagram showing another example of a ventilation path in the photoelectric conversion module according to this embodiment. Figure 4C is a schematic diagram showing yet another example of a ventilation path in the photoelectric conversion module according to this embodiment. Figure 4D is a schematic diagram showing yet another example of a ventilation path in the photoelectric conversion module according to this embodiment. Figure 5A is a schematic cross-sectional view showing another example of a photoelectric conversion module according to this embodiment. Figure 5B is a schematic cross-sectional view showing yet another example of a photoelectric conversion module according to this embodiment. Figure 6 is a schematic plan view showing yet another example of a photoelectric conversion module according to this embodiment. Figure 7 is a perspective view showing a simulated piece simulating the frame of the photoelectric conversion module. Figure 8 is a schematic diagram illustrating the air cooling evaluation method. Figure 9 is a perspective view showing a simulated piece related to Comparative Example 2.

[0010] (Knowledge forming the basis of this disclosure) When photoelectric conversion modules such as solar cell modules are exposed to sunlight outdoors, the temperature of the frame of the photoelectric conversion module may rise. The performance of the photoelectric conversion elements in the photoelectric conversion module may decrease with increasing temperature. For example, if the photoelectric conversion elements contain a perovskite compound, the photodegradation of the perovskite compound is more likely to progress at high temperatures. Such a decrease in the performance of the photoelectric conversion module due to the rise in frame temperature can occur in various types of photoelectric conversion modules.

[0011] According to the technology described in the above-mentioned patent document, heat dissipation is promoted by creating airflow on the back of the solar cell panel. However, depending on the application of the photoelectric conversion module, it may be difficult to provide a heat dissipation component on the back of the photoelectric conversion module panel. Furthermore, according to the inventors' studies, when a photoelectric conversion module is exposed to sunlight outdoors, the temperature of a specific part of the photoelectric conversion module frame becomes higher than the temperature of other parts. As a result, a decrease in the performance of the photoelectric conversion module may occur in the panel mounted on the frame, near the specific part of the frame.

[0012] Therefore, the inventors diligently investigated whether it was possible to effectively cool specific parts of the frame of the photoelectric conversion module. As a result, they newly discovered that the temperature rise of the frame of the photoelectric conversion module can be suppressed by providing ventilation passages in specific parts of the frame. Based on this new finding, the inventors completed the photoelectric conversion module disclosed in this disclosure.

[0013] (Embodiments of the Disclosure) Embodiments of the Disclosure will be described below with reference to the drawings. The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement and connection forms of components, steps, and the order of steps shown in the following embodiments are examples and are not intended to limit the scope of the claims. In addition, the figures are not necessarily strictly accurate. In each figure, substantially identical components are denoted by the same reference numerals, and redundant explanations may be omitted or simplified. Furthermore, in the following, terms indicating relationships between elements such as parallel and perpendicular, terms indicating shapes of elements such as rectangular, and numerical ranges do not represent only strict meanings, but also include substantially equivalent ranges, for example, differences of a few percent.

[0014] In the attached drawings, the x, y, and z axes are orthogonal to each other, and in multiple drawings, the x axes are parallel to each other, the y axes are parallel to each other, and the z axes are parallel to each other.

[0015] Figure 1 is a schematic perspective view showing an example of a photoelectric conversion module according to this embodiment. Figure 2 is a plan view of the photoelectric conversion module shown in Figure 1. Figure 3 is a cross-sectional view of the photoelectric conversion module with line III-III in Figure 2 as the cutting line.

[0016] As shown in Figures 1 to 3, the photoelectric conversion module 1a comprises a panel 10 and a frame 20. The panel 10 includes a photoelectric conversion element. The photoelectric conversion element is not limited to a specific type of photoelectric conversion element. The photoelectric conversion element may be an element that converts light into electricity, such as a photocell, or an element that converts electricity into light, such as a light-emitting diode. The panel 10 has a surface 10a on which the photoelectric conversion module 1a receives light from the outside or emits light to the outside of the photoelectric conversion module 1a. An example of external light is sunlight. The surface 10a is formed, for example, to form one end in the thickness direction of the panel 10. On the panel 10, for example, a plurality of photoelectric conversion elements are arranged planarly. The frame 20 is arranged along the outer edge of the panel 10, and the panel 10 is attached to the frame 20. For example, as shown in Figure 3, the frame 20 has a groove 25 that receives the outer edge of the panel 10.

[0017] The frame 20 has a ventilation passage 22. The ventilation passage 22 includes a first opening 22a and a second opening 22b. The first opening 22a and the second opening 22b are formed in the thickness direction (z-axis direction) of the panel 10, closer to the outside of the photoelectric conversion module 1a than the surface 10a. For example, both the first opening 22a and the second opening 22b open to the outside of the photoelectric conversion module 1a.

[0018] For example, when the photoelectric conversion module 1a is installed outdoors, sunlight may irradiate a portion of the frame 20 (a specific portion) that is closer to the outside of the photoelectric conversion module 1a than the surface 10a in the thickness direction of the panel 10. This is because, since the photoelectric conversion module 1a receives light from the outside or emits light to the outside on the surface 10a, the photoelectric conversion module 1a can be positioned so that sunlight hits the surface 10a. When sunlight irradiates a specific portion of the frame 20, an airflow is generated that passes through the ventilation passage 22, which helps to suppress the temperature rise of the specific portion of the frame 20. As a result, a decrease in the performance of the photoelectric conversion module is less likely to occur near the specific portion of the frame 20.

[0019] The shape of the panel 10 in plan view is not limited to a specific shape. As shown in Figure 2, the shape of the panel 10 in plan view is, for example, rectangular. The shape of the frame 20 in plan view is not limited to a specific shape. The shape of the frame 20 is a shape that matches the shape of the panel 10 in plan view, and a rectangular central opening 21 corresponding to the panel 10 is formed in the center of the frame 20. The frame 20 surrounds the central opening 21 in plan view.

[0020] As shown in Figure 3, the photoelectric conversion module 1a further comprises, for example, a sealing material 30. The sealing material 30 seals the gap between the outer edge of the panel 10 and the frame 20. The sealing material 30 contains, for example, a predetermined resin. Examples of resins include acrylic resin, epoxy resin, and silicone resin.

[0021] The formation positions of the first opening 22a and the second opening 22b are not limited to specific positions, as long as they are formed in the thickness direction of the panel 10 at a location closer to the outside of the photoelectric conversion module 1a than the surface 10a. For example, the first opening 22a is in contact with the outside of the frame 20 in a direction perpendicular to the thickness direction of the panel 10. In addition, the second opening 22b is in contact with the central opening 21. In this case, air can be guided towards the center of the panel 10 through the ventilation passage 22. Alternatively, air can be guided from the center of the panel 10 to the outside of the photoelectric conversion module 1a through the ventilation passage 22. This makes it easier to suppress the temperature rise of specific parts of the frame 20.

[0022] As shown in Figures 1 and 2, the frame 20 has, for example, a plurality of ventilation passages 22. The frame 20 has, for example, a portion extending in the x-axis direction and a portion extending in the y-axis direction. In the portion of the frame 20 extending in the x-axis direction, a plurality of ventilation passages 22 extending in the y-axis direction are arranged at predetermined intervals in the x-axis direction. In the portion of the frame 20 extending in the y-axis direction, a plurality of ventilation passages 22 extending in the x-axis direction are arranged at predetermined intervals in the y-axis direction. With this configuration, the length of each of the plurality of ventilation passages 22 tends to be short, and air can easily pass through each of the plurality of ventilation passages 22. Therefore, a specific part of the frame 20 is effectively cooled by the airflow passing through the plurality of ventilation passages 22, and the rise in temperature of that specific part of the frame 20 is more easily suppressed.

[0023] The structure for forming the ventilation passage 22 in the frame 20 is not limited to a specific structure. Figure 4A is a schematic diagram showing an example of a ventilation passage in a photoelectric conversion module according to this embodiment. As shown in Figure 4A, the frame 20 includes, for example, a partition wall 22p. The partition wall 22p extends in contact with the ventilation passage 22 between the first opening 22a and the second opening 22b. The partition wall 22p separates, for example, adjacent ventilation passages 22. In this case, a large number of ventilation passages 22 can be provided in the frame 20, and specific parts of the frame 20 can be cooled effectively. In addition, the frame 20 is likely to have the desired mechanical strength.

[0024] Figure 4B schematically shows another example of the ventilation passage of the photoelectric conversion module according to this embodiment. As shown in Figure 4B, the frame 20 includes, for example, a heat dissipation fin 22f. The heat dissipation fin 22f is arranged in the ventilation passage 22 between the first opening 22a and the second opening 22b. With this configuration, when the wind speed outdoors is high, specific parts of the frame 20 can be effectively cooled.

[0025] The heat dissipation fin 22f protrudes in the negative z-axis direction from the inner circumferential surface of the frame 20 that is in contact with the ventilation passage 22. For example, a gap 22g is formed between the tip of the heat dissipation fin 22f and the inner circumferential surface of the frame 20 that is opposite to that tip.

[0026] The spacing between adjacent heat dissipation fins 22f is not limited to a specific value. For example, if the spacing between heat dissipation fins is large, the viscous force of the airflow decreases, and the airflow tends to become turbulent. In this case, warm air and cold air mix, making heat transfer easier, and specific parts of the frame 20 are more easily cooled.

[0027] Figure 4C schematically shows another example of the ventilation passage of the photoelectric conversion module according to this embodiment. As shown in Figure 4C, the frame 20 includes, for example, a projection 22t. The projection 22t is positioned in the ventilation passage 22 between the first opening 22a and the second opening 22b. With this configuration, the airflow guided into the ventilation passage 22 is easily disturbed by the projection 22t. As a result, warm air and cold air mix, making it easier for heat to be transferred, and specific parts of the frame 20 are easily cooled.

[0028] Figure 4D schematically shows yet another example of the ventilation passage of the photoelectric conversion module according to this embodiment. As shown in Figure 4D, in the frame 20, the ventilation passage 22 includes a first ventilation passage 22m and a second ventilation passage 22n. The first ventilation passage 22m and the second ventilation passage 22n are formed in different ways. The conditions under which the cooling effect of the frame 20 exerted by the ventilation passage 22 is highest can vary depending on the configuration of the ventilation passage 22. Since the first ventilation passage 22m and the second ventilation passage 22n are formed in different ways, the frame 20 is easily cooled effectively under various conditions such as ambient temperature, humidity, and wind speed.

[0029] The first ventilation passage 22m and the second ventilation passage 22n differ in, for example, in the following respects (I), (II), or (III): (I) The first ventilation passage 22m and the second ventilation passage 22n differ in at least one selected from the group consisting of the size of the first opening 22a, the size of the first opening 22a, and the length of the ventilation passage 22. (II) The first ventilation passage 22m and the second ventilation passage 22n differ in at least one selected from the group consisting of the presence or absence of a partition wall 22p and the presence or absence of a heat dissipation fin 22f. (III) The first ventilation passage 22m and the second ventilation passage 22n differ in at least one selected from the group consisting of the presence or absence of a protrusion 22t, the density of the protrusion 22t, the shape of the protrusion 22t, and the number of protrusions 22t.

[0030] As shown in Figure 4D, for example, the first ventilation passage 22m is in contact with the partition wall 22p, while the second ventilation passage 22n is in contact with the heat dissipation fin 22f. With this configuration, the frame 20 can be effectively cooled under various wind speed conditions.

[0031] The photoelectric conversion elements included in panel 10 are not limited to any particular element. For example, the photoelectric conversion elements include perovskite solar cells. At high temperatures, the photodegradation of the perovskite compound in the perovskite solar cell tends to progress. However, the ventilation passage 22 effectively cools the frame 20, suppressing the rise in the frame 20's temperature, thus preventing the photodegradation of the perovskite compound in the perovskite solar cell. The photoelectric conversion elements may also include photocells other than perovskite solar cells.

[0032] The photoelectric conversion module 1a is, for example, translucent. The photoelectric conversion module 1a is, for example, transparent or semi-transparent to visible light.

[0033] The photoelectric conversion module 1a may be, for example, a solar cell module integrated with glass building materials. In this case, the photoelectric conversion module 1a can be used, for example, as a light-gathering panel for windows and balconies.

[0034] The material of the frame 20 is not particularly limited. The frame 20 may be made of metal such as aluminum and aluminum alloys, or it may be made of resin. The frame 20 may have a surface formed by surface treatment such as anodizing and plating.

[0035] The solar reflectance of the surface of the frame 20 is not limited to a specific value. For example, the solar reflectance of the surface of the frame 20 may be 30% or less. In this way, even if the frame 20 is less likely to reflect sunlight and more likely to absorb it, the frame 20 is effectively cooled by the air flowing through the ventilation channel 22, and the temperature of the frame 20 does not rise easily. The solar reflectance can be measured, for example, in accordance with Japanese Industrial Standard (JIS) K5602:2008.

[0036] The photoelectric conversion elements included in panel 10 may be light-emitting elements such as light-emitting diodes and organic EL elements. In this case, the photoelectric conversion module 1a can be used, for example, as an outdoor display.

[0037] The photoelectric conversion module 1a can be modified from various viewpoints. Figure 5A is a schematic cross-sectional view showing another example of the photoelectric conversion module according to this embodiment. Figure 5B is a schematic cross-sectional view showing yet another example of the photoelectric conversion module according to this embodiment. Figure 6 is a schematic plan view showing yet another example of the photoelectric conversion module according to this embodiment. These photoelectric conversion modules are configured similarly to the photoelectric conversion module 1a, except for parts that are not specifically described. Components of the photoelectric conversion modules shown in Figures 5A, 5B, and 6 that are the same as or correspond to the components of the photoelectric conversion module 1a are denoted by the same reference numerals, and detailed descriptions are omitted. The description of the photoelectric conversion module 1a also applies to these photoelectric conversion modules, insofar as it does not contradict the technical description.

[0038] As shown in Figure 5A, in the photoelectric conversion module 1b, the panel 10 has surfaces 10a and 10b at both ends in the thickness direction. Each of surfaces 10a and 10b is a surface that receives light from outside the photoelectric conversion module 1b or emits light to the outside of the photoelectric conversion module 1b. In the photoelectric conversion module 1b, the frame 20 has a ventilation passage 22 in the thickness direction of the panel 10, closer to the outside of the photoelectric conversion module 1b than surface 10a. In addition, the frame 20 has a further ventilation passage 22 in the thickness direction of the panel 10, closer to the outside of the photoelectric conversion module 1b than surface 10b. The photoelectric conversion module 1b can be installed, for example, such that the time during which sunlight irradiates surface 10a is different from the time during which sunlight irradiates surface 10b. When sunlight irradiates surface 10a, the frame 20 is effectively cooled by air passing through the ventilation passage 22 close to surface 10a. When sunlight shines on the surface 10b, the frame 20 is effectively cooled as air passes through the ventilation channel 22 near the surface 10b. This helps to suppress the rise in temperature of the frame 20.

[0039] As shown in Figure 5B, the photoelectric conversion module 1c comprises two panels 10, which are mounted on the frame 20 in a manner parallel to each other. The two panels 10 have two surfaces 10a facing opposite directions. The frame 20 has a ventilation passage 22 located closer to the outside of the photoelectric conversion module 1c than the two surfaces 10a in the thickness direction of the panels 10. The photoelectric conversion module 1c may be installed such that, for example, the time during which sunlight irradiates one surface 10a of the two panels 10 is different from the time during which sunlight irradiates the other surface 10a of the two panels 10. When sunlight irradiates one surface 10a of the two panels 10, the frame 20 is effectively cooled by the passage of air through the ventilation passage 22 near that surface 10a. When sunlight irradiates the other surface 10a of the two panels 10, the frame 20 is effectively cooled by the passage of air through the ventilation passage 22 near that surface 10a. This helps to suppress the temperature rise of the frame 20.

[0040] As shown in Figure 5B, in the photoelectric conversion module 1c, the frame 20 is equipped with a ventilation passage 23. The ventilation passage 23 connects, for example, the space between the two panels 10 to the outside of the photoelectric conversion module 1c. The airflow generated through the ventilation passage 23 prevents the temperature in the space between the two panels 10 from rising.

[0041] As shown in Figure 6, in the photoelectric conversion module 1d, the ventilation passage 22 extends in the x-axis direction in the portion of the frame 20 that extends in the x-axis direction. For example, if airflow is more likely to occur in the x-axis direction than in the y-axis direction, the portion of the frame 20 that extends in the x-axis direction can be effectively cooled by the photoelectric conversion module 1d.

[0042] (Other Embodiments) The photoelectric conversion module has been described based on the embodiments. However, this disclosure is not limited to these embodiments. Without departing from the spirit of this disclosure, various modifications to the embodiments that a person skilled in the art can conceive of, and other forms that are constructed by combining some of the components of the embodiments, are included in the scope of this disclosure.

[0043] (Supplementary Note) From the above description, the following technologies are disclosed. (Technology 1) A photoelectric conversion module, comprising a photoelectric conversion element, a panel having a surface for receiving external light or emitting light to the outside of the photoelectric conversion module, and a frame disposed along an outer edge portion of the panel to which the panel is attached, wherein the frame has a ventilation path, the ventilation path includes a first opening and a second opening formed at a position closer to the outside than the surface in the thickness direction of the panel, and extends between the first opening and the second opening, the photoelectric conversion module. (Technology 2) The photoelectric conversion module according to Technology 1, wherein the frame includes a partition wall extending in contact with the ventilation path between the first opening and the second opening. (Technology 3) The photoelectric conversion module according to Technology 1, wherein the frame includes heat dissipation fins disposed in the ventilation path between the first opening and the second opening. (Technology 4) The photoelectric conversion module according to any one of Technologies 1 to 3, wherein the ventilation path includes a first ventilation path and a second ventilation path, and the first ventilation path and the second ventilation path are formed in different manners. (Technology 5) The photoelectric conversion module according to any one of Technologies 1 to 4, wherein the surface of the frame has a solar radiation reflectance of 30% or less. (Technology 6) The photoelectric conversion module according to any one of Technologies 1 to 5, wherein the photoelectric conversion element includes a perovskite solar cell. (Technology 7) The photoelectric conversion module according to any one of Technologies 1 to 6, wherein the photoelectric conversion module is a glass building material integrated solar cell module.

[0044] Hereinafter, the present disclosure will be described in more detail by way of examples. The present disclosure is not limited to the following examples.

[0045] <Example 1> Figure 7 is a perspective view showing a simulated piece that simulates the frame of a photoelectric conversion module. The simulated piece F1 shown in Figure 7 is made of aluminum, and black anodizing was performed on the surface of the simulated piece F1. As shown in Figure 4A, a plurality of ventilation paths penetrating the simulated piece F1 in the y-axis direction were formed from the side surface L1 of the simulated piece F1. When the simulated piece F1 was viewed from a direction perpendicular to the side surface L1, the opening of each ventilation path was a square shape with a side length of 5 mm. The plurality of ventilation paths were arranged at intervals of 1 mm in the x-axis direction. In this way, the frame simulated piece according to Example 1 was obtained.

[0046] <Example 2> A frame simulated piece according to Example 2 was obtained in the same manner as in Example 1, except for the following points. As shown in Figure 4B, a plurality of heat dissipation fins and ventilation paths penetrating the simulated piece F in the y-axis direction from the side surface L1 of the simulated piece F1 and contacting the heat dissipation fins were formed. The distance between the heat dissipation fins was 1 mm, and the thickness of the heat dissipation fins (dimension in the x-axis direction) was 1 mm. The dimension of the heat dissipation fins in the z-axis direction was 7 mm.

[0047] <Comparative Example 1> A frame simulated piece according to Comparative Example 1 was obtained in the same manner as in Example 1, except that no ventilation path was formed in the simulated piece F1.

[0048] <Air Cooling Evaluation> Figure 8 is a diagram schematically showing the method of air cooling evaluation. As shown in Figure 8, for the frame simulated piece according to Example 1, a panel simulated piece P was attached by a pair of simulated sealing materials S to obtain a test piece Sa according to Example 1. The panel simulated piece P was made of quartz. The dimension of the panel simulated piece P in the x-axis direction was 61 mm, the dimension in the y-axis direction was 15 mm, and the dimension in the z-axis direction was 20 mm. The simulated sealing material S was made of an acrylic resin. The dimension of the simulated sealing material S in the x-axis direction was 61 mm, the dimension in the y-axis direction was 15 mm, and the dimension in the z-axis direction was 2.5 mm. A thermocouple T was arranged between the inner surface of the frame simulated piece F1 contacting the side surface L1 and the simulated sealing material S to obtain a test piece Sa according to Example 1. Test pieces Sa according to Example 2 and Comparative Example 1 were obtained in the same manner as in Example 1, except that the frame simulated piece according to Example 2 and the frame simulated piece according to Comparative Example 1 were used instead of the frame simulated piece according to Example 1.

[0049] As shown in Figure 8, the upper surface U1 of the test specimen Sa was irradiated with simulated sunlight V. The intensity of the simulated sunlight V was 100 [mW / cm²]. 2 The results were as follows. Furthermore, using fan W, air was blown in the negative y-axis direction at a wind speed of 2.5 m / s or 5.0 m / s, and the temperature of the thermocouple in a steady state was measured. The results are shown in Table 1. The room temperature in which this measurement was taken was 24.7°C, and the dew point temperature was -35.1°C.

[0050]

[0051] The steady-state thermocouple temperature when using test piece Sa according to Example 1 and Example 2 was lower than the steady-state thermocouple temperature when using test piece Sa according to Comparative Example 1. Therefore, it was confirmed that the cooling effect by airflow from fan W is high due to the formation of vents in the frame simulation piece F1. Comparing Example 1 and Example 2, it can be seen that the difference in thermocouple temperature is large when the wind speed is 2.5 m / s, while the difference in thermocouple temperature is small when the wind speed is 5.0 m / s. This suggests that the relationship between the magnitudes of thermocouple temperatures in Example 1 and Example 2 reverses when the wind speed is higher. This suggests that it is advantageous to form different types of vents in the frame in order to enhance the cooling effect of the frame with airflow at various wind speeds.

[0052] Window frames used as building materials are hollow and have a small heat capacity. Therefore, the temperature of the window frame rises more easily when exposed to sunlight. In the air-cooling evaluation using test piece Sa according to Comparative Example 1, when the wind speed was 5.0 m / s, it was calculated that 316 J of heat was supplied to test piece Sa from the simulated sunlight V. This calculation was based on the specific heat of aluminum (0.913 J / (g·K)) and the density of aluminum (2.7 g / cm³). 3 It was done based on this.

[0053] <Comparative Example 2> Figure 9 is a perspective view showing a simulated piece according to Comparative Example 2. The simulated piece F2 shown in Figure 9 is configured similarly to the simulated piece F1, except that it has a hollow section H inside the part including the side surface L1. The dimensions of the hollow section H in the x-axis direction were 59 mm, in the y-axis direction it was 23 mm, and in the z-axis direction it was 8 mm. A test piece Sa according to Comparative Example 2 is prepared in the same manner as in Example 1, except that this simulated piece F2 is used, and an air cooling evaluation is performed using the test piece Sa according to Comparative Example 2 at a wind speed of 5.0 m / s, in the same manner as in Comparative Example 1. In this case, the temperature of the thermocouple in a steady state is estimated to be 53.9°C. It is expected that applying the structure based on the above embodiment to such a sash frame will significantly suppress the temperature rise of the sash frame, and that it will be possible to suppress the performance degradation and deterioration of the photoelectric conversion module including such a sash frame.

[0054] The photoelectric conversion module disclosed herein can be used in a variety of applications, including glass building material-integrated solar cell modules and outdoor displays.

Claims

1. A photoelectric conversion module comprising: a panel including a photoelectric conversion element and having a surface on which light from the outside of the photoelectric conversion module is received or emitted to the outside; and a frame arranged along the outer edge of the panel and on which the panel is mounted, wherein the frame has a ventilation passage, and the ventilation passage includes a first opening and a second opening formed in the thickness direction of the panel at a position closer to the outside than the surface, and extending between the first opening and the second opening.

2. The photoelectric conversion module according to claim 1, wherein the frame includes a partition wall extending between the first opening and the second opening in contact with the ventilation passage.

3. The photoelectric conversion module according to claim 1, wherein the frame includes heat dissipation fins arranged in the ventilation passage between the first opening and the second opening.

4. The photoelectric conversion module according to claim 1, wherein the ventilation passage includes a first ventilation passage and a second ventilation passage, and the first ventilation passage and the second ventilation passage are formed in different manner from each other.

5. The photoelectric conversion module according to claim 1, wherein the surface of the frame has a solar reflectance of 30% or less.

6. The photoelectric conversion module according to claim 1, wherein the photoelectric conversion element includes a perovskite solar cell.

7. The photoelectric conversion module is a solar cell module integrated with glass building materials, as described in claim 1.

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