JP2012215539A - Weather-resistance testing device for solar battery panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather resistance for a solar cell panel having a novel structure in which variation in luminous efficiency of each of a plurality of rare gas discharge lamps is suppressed and the solar cell panel is maintained at a specified temperature condition without causing temperature unevenness. Providing test equipment.
The solar cell panel weather resistance test apparatus is arranged to face a light irradiation surface of a solar cell panel so as to be spaced apart from each other, and a plurality of rod-shaped noble gas discharges each having a lamp central axis extending in parallel to each other. A blower mechanism that blows cooling air toward the light irradiation surface of the solar cell panel through a gap between the lamp and the adjacent rare gas discharge lamp, and a temperature of the cooling air blown by the blower mechanism is adjusted. And a temperature adjusting mechanism.
[Selection] Figure 2

Description

  The present invention relates to a weather test apparatus for solar cell panels that irradiates, for example, a large area solar cell panel with ultraviolet rays.

  In recent years, clean energy that does not involve much fossil fuel consumption has been demanded from the viewpoint of conservation of the global environment. Among these, solar cells that can use solar energy that can be said to be inexhaustible are attracting attention, and solar power generation systems and the like are being introduced and developed. The life characteristics of solar cells are most influenced by ultraviolet rays emitted from the sun, and physical and chemical deterioration occurs due to sunlight irradiation, and accordingly, the performance and functions of the solar cells deteriorate. Therefore, for example, knowing the state of deterioration due to sunlight irradiation in advance for each use condition is a very important factor in product design, for example, a weather resistance test for evaluating weather resistance characteristics by intentionally irradiating ultraviolet rays. A device has been proposed.

  In such a weather resistance test apparatus, for example, deterioration is intentionally promoted by exposing the solar cell to harsh conditions such as intentionally radiating the solar cell with ultraviolet rays more than five times the amount of ultraviolet rays emitted from the sun. For example, a metal halide lamp is suitably used as an ultraviolet ray source because it is excellent in terms of spectral distribution and irradiance (Patent Document 1). reference.).

In the weather resistance test of a solar cell panel, the temperature of the solar cell panel is performed in a defined temperature state of, for example, 60 ° C. Therefore, the weather resistance test apparatus is also required to be able to perform ultraviolet irradiation while maintaining the specified temperature (60 ° C.) of the solar cell panel.
Therefore, in Patent Document 1, as shown in FIG. 8, cooling air (an arrow indicated by a broken line in FIG. 8) adjusted to a predetermined temperature by the temperature adjustment mechanism 55 is introduced into the weather test apparatus from the air duct 60. In addition, it is described that it is configured to blow air from below the solar cell panel 41 through the air guides 75 arranged in parallel to each other so as to extend in a direction perpendicular to the solar cell panel 41, respectively. By adopting such a configuration, it is supposed that the solar cell panel 41 that generates heat by absorbing ultraviolet rays from the metal halide lamp 70 is cooled by the cooling air and maintained at the specified temperature.

JP 2005-241487 A

However, the metal halide lamp not only generates a large amount of heat, but also has many problems such as variability in the amount of radiated light, difficulty in instantaneous lighting, and large size. In particular, the large amount of heat generated complicates the temperature control in the weathering test apparatus from the viewpoint of preventing the thermal influence on the solar cell panel, which becomes a fatal problem.
However, although Patent Document 1 describes cooling the temperature in the weathering test apparatus by introducing cooling air, the cooling air is directed from below the solar cell panel 41 toward the solar cell panel 41. This is a spray, and the most important light irradiation surface (surface that receives sunlight) of the solar cell panel 41 is not temperature-controlled, so that the thermal effect on the solar cell panel 41 due to heat generated by the metal halide lamp 70 is prevented. Sufficient measures have not been taken. That is, as shown in FIG. 9, the exhaust heat from the lower surface of the solar cell panel 41 is promoted by blowing cooling air from below, but the light irradiation surface 41A of the solar cell panel 41 is exhausted by natural convection. Since only the effect can be obtained, warm air is not scattered and gathers in the center of the upper surface (an updraft is formed), and the air temperature (ambient temperature) in contact with the upper surface and the lower surface of the solar cell panel 41 is undesirably reduced. The thermal capacity difference is widened, and temperature unevenness in the thickness direction of the solar cell panel 41 is likely to occur.
Further, in the weather resistance test apparatus, it is also necessary to cool the metal halide lamp 70, and in particular, when a plurality of metal halide lamps 70 are used to perform a weather resistance test on the large-area solar cell panel 41. This is because the metal halide lamp 70 cannot be cooled sufficiently. There is also a problem that the illuminance of the light irradiation surface 41A of the solar cell panel 41 becomes uneven due to uneven cooling.
Furthermore, the metal halide lamp 70 has a short lamp life and must be frequently replaced.

  Therefore, the present inventors have a spectrum distribution similar to sunlight in the ultraviolet region, and the heat generation amount is small compared to a metal halide lamp, the variability of the amount of radiated light is small, and instantaneous lighting is possible. In addition, we focused on an external electrode type rare gas discharge lamp having features such as a small size. Rare gas discharge lamps are widely used in various applications such as light sources for sterilization devices, document illumination devices, backlights, etc., but are used as light sources for weathering test devices for solar cell panels, especially for large areas. Conventionally, it is not known to use a plurality of rare gas discharge lamps side by side in order to deal with solar cells.

  The present invention has been made based on the above circumstances, and in a configuration including a plurality of rod-shaped rare gas discharge lamps, it is possible to suppress variations in luminous efficiency of each rare gas discharge lamp. Another object of the present invention is to provide a weather test apparatus for a solar cell panel having a novel structure that can be maintained at a specified temperature condition without causing temperature unevenness of the solar cell panel.

  A weather resistance test apparatus for a solar cell panel according to the present invention includes a plurality of rod-shaped noble gas discharge lamps, each of which has a lamp central axis extending in parallel with each other and arranged to face the light irradiation surface of the solar cell panel. A blower mechanism that blows cooling air toward the light irradiation surface of the solar cell panel through a gap between adjacent rare gas discharge lamps, and a temperature adjustment that adjusts the temperature of the cooling air blown by the blower mechanism And a mechanism.

  In the weather test apparatus for solar cell panels of this invention, it is preferable that the said temperature adjustment mechanism has a function adjusted to temperature lower than the preset temperature about the light irradiation surface of the said solar cell panel.

  Moreover, in the weather test apparatus for solar cell panels of the present invention, after introducing cooling air that has been blown onto the solar cell panel to a high temperature and adjusting the temperature by the temperature adjustment mechanism, again, It is preferable that a circulating air blowing system that blows air toward the solar cell panel by the air blowing mechanism is constructed.

  Furthermore, in the weather test apparatus for solar cell panels of the present invention, at least a part of the cooling air that has flowed along the light irradiation surface of the solar cell panel flows through the back side of the solar cell panel. It is preferable to be configured.

  Furthermore, in the weather resistance test apparatus for solar battery panels of the present invention, the air blow distribution adjusting mechanism for adjusting the wind speed distribution of the cooling air blown from the blower mechanism to each rare gas discharge lamp is further provided. Preferably it is.

  Furthermore, in the weather test apparatus for solar cell panels of the present invention, as the rare gas discharge lamp, a pair of electrodes are disposed on the outer surface of the arc tube, and a phosphor is applied to the inner surface of the arc tube. Things can be used.

According to the weather resistance test apparatus for solar cell panel of the present invention, the cooling air adjusted to an appropriate temperature by the temperature adjusting mechanism is passed through the gap between the adjacent rare gas discharge lamps by the air blowing mechanism, and light irradiation of the solar cell panel is performed. Since each rare gas discharge lamp is uniformly cooled for each lamp by being configured to be blown (supplied) toward the surface, it is possible to suppress variations in luminous efficiency due to uneven cooling. In addition, the influence of the radiant heat on the solar cell panel can be suppressed, and the cooling air is blown from the vertical direction to the light irradiation surface of the solar cell panel. Cooling can be performed with high in-plane temperature uniformity. Therefore, the intended ultraviolet irradiation can be performed while maintaining the prescribed temperature conditions without causing temperature unevenness in the solar cell panel.
In addition, since cooling of each rare gas discharge lamp and solar panel is performed by a common air blowing mechanism, it is not necessary to perform complicated control, and the structure is simplified and energy consumption is reduced. I can plan.

  Even if the temperature of the cooling air rises due to cooling of the rare gas discharge lamp, the temperature adjustment mechanism has a function of adjusting the temperature to a temperature lower than the set temperature for the light irradiation surface of the solar cell panel. As the temperature of the cooling air blown to the light irradiation surface of the solar cell panel is sufficiently low to maintain the temperature of the solar cell panel at the set temperature, the cooling of the rare gas discharge lamp and the solar cell The panel can be reliably cooled. Moreover, since the temperature of a cooling air should just be adjusted to the temperature lower than the setting temperature about the light irradiation surface of a solar cell panel, temperature control (management) can be performed easily.

  In addition, a circulating air blowing system that introduces cooling air that has been blown onto the solar cell panel into the temperature adjustment mechanism, adjusts the temperature by the temperature adjustment mechanism, and then blows air again toward the solar cell panel by the air blowing mechanism. With the constructed configuration, it is not necessary to take in cooling air from the outside of the apparatus and exhaust the cooling air to the outside of the apparatus, so that the air blowing system can be configured compactly.

  Since at least a part of the cooling air flowing along the light irradiation surface of the solar cell panel flows through the back side of the solar cell panel, the light irradiation surface of the solar cell panel Since the cooling air can flow along the light irradiation surface without biasing the flow direction of the cooling air blown from the vertical direction to a specific direction, the solar cell panel can have a temperature surface on the light irradiation surface. It can be cooled in a state where the inside uniformity is high, and the cooling wind that has flowed along the light irradiation surface flows into the back side of the solar cell panel, so that the solar cell panel is also cooled from the back side. And it can suppress that the temperature nonuniformity in the thickness direction of a solar cell panel arises.

  Furthermore, since it is configured to further include a ventilation distribution adjusting mechanism that adjusts the wind speed distribution of the cooling air blown from the blowing mechanism to each rare gas discharge lamp, the rare gas discharge lamp is more reliably provided for each lamp. It is possible to cool under uniform cooling conditions.

  Furthermore, since the rare gas discharge lamp has a configuration in which the phosphor layer emits light by the action of ultraviolet rays (vacuum ultraviolet rays) in a predetermined wavelength range generated in the inner space of the arc tube, an extra light component is removed from the solar cell. Since it is not radiated to the panel, the expected weather resistance test can be performed with high reliability.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline of a structure in an example of the rare gas discharge lamp used in the weather test apparatus for solar cell panels which concerns on the 1st Embodiment of this invention, Comprising: (a) Sectional drawing along a lamp | ramp central axis, (B) It is a BB sectional view in (a). It is explanatory drawing which shows the outline of a structure in an example of the weather resistance testing apparatus for solar cell panels which concerns on the 1st Embodiment of this invention. It is a perspective view which shows an example of the example of arrangement | positioning of the lamp unit in the weather resistance testing apparatus for solar cell panels which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the outline of a structure in an example of a lamp unit. It is explanatory drawing which shows the outline of a structure in an example of the weather resistance testing apparatus for solar cell panels which concerns on the 2nd Embodiment of this invention. It is the front view for description seen from the lamp central-axis direction which abbreviate | omits and shows the outline of the structure in the other example of a lamp unit. It is the explanatory side view which looked at the lamp unit shown in FIG. 6 in the state which abbreviate | omitted the side wall of the casing, and was seen from the arrow A direction. It is a figure which shows roughly a part of structure in an example of the conventional weathering test apparatus. FIG. 9 is a conceptual diagram showing a flow of cooling air in the weathering test apparatus shown in FIG. 8.

Hereinafter, embodiments of the present invention will be described in detail.
The weather test apparatus for solar cell panels of the present invention comprises a plurality of rare gas discharge lamps as light sources. In the following, first, a rare gas discharge lamp will be described.

[Rare gas discharge lamp]
FIG. 1 is a diagram showing an outline of a configuration of an example of a rare gas discharge lamp used in a weather resistance test apparatus for a solar battery panel according to the present invention, wherein (a) a cross-sectional view taken along the center axis of the lamp; It is a BB line sectional view in a).
The rare gas discharge lamp 11 includes a straight tube-shaped arc tube 12 having both ends sealed, and inside the arc tube 12 is xenon gas or a mixed gas containing xenon gas as a main component. A predetermined amount is enclosed.
For example, barium glass, kovar glass, tungsten glass, soda lime glass, borosilicate glass, or the like can be used as the glass material constituting the arc tube 12.
The outer diameter of the arc tube 12 is, for example, not less than 6 mm and not more than 15 mm, and the wall thickness is not less than 0.3 mm and not more than 0.6 mm. In particular, since the luminous efficiency can be increased, the outer diameter of the arc tube 12 is preferably 9.8 to 14 mm.

On the inner peripheral surface of the arc tube 12, for example, a phosphor layer 13 is formed over substantially the entire area. The phosphor layer 13 is formed by, for example, applying a phosphor slurry in which a phosphor material that emits visible light or ultraviolet light is mixed with a solvent in which nitroacetate is mixed with nitrocellulose to the inner surface of the arc tube 12 and firing. Can be formed. As the phosphor material, for example, those for ultraviolet light emission, those for blue light emission, those for green light emission, and those for red light emission are used in combination. For example, as the ultraviolet light emission phosphor, LaMgAl ₁₁ O ₁₉ : Ce, Ce- (Mg, Ba) -Al-O and the like, and (Y, Gd) BO ₃ : Eu or Y ₂ O ₃ : Eu and the like may be exemplified as the red phosphor. The green phosphor can be exemplified by LaPO ₄ : Ce, Tb and the like, and the blue phosphor can be exemplified by BaMgAl ₁₀ O ₁₇ : Eu, but the phosphor substance is not limited thereto. Is not to be done.
The thickness of the phosphor layer 13 is, for example, 10 to 25 μm, and the size that is brightest is selected depending on the combination of phosphor materials used. The optimum thickness of the phosphor layer 13 is usually 13 to 17 μm.
The region where the phosphor layer 13 is formed does not have to be substantially the entire inner peripheral surface of the arc tube 12, and the region where the phosphor layer 13 is not formed on a part of the inner peripheral surface of the arc tube 12, or A region where the thickness of the phosphor layer 13 is small may be formed.

On the outer peripheral surface of the arc tube 12, a pair of substantially strip-like electrodes 14 </ b> A and 14 </ b> B are provided at positions facing each other across the lamp center axis C so as to extend along the tube axis (lamp center axis) of the arc tube 12. One electrode 14A functions as a high-voltage side electrode, and the other electrode 14B functions as a low-voltage side electrode.
Each of the electrodes 14A, 14B is made of, for example, a metal tape such as aluminum or copper cut into a strip shape and attached to the outer peripheral surface of the arc tube 12, or a conductive paste material such as a silver paste. Is made of a thin film formed by screen printing on the outer peripheral surface of the arc tube 12 and baked. For example, when it is made of a thin film of silver paste, the thickness may be in the range of 2 to 20 μm. preferable.
Further, each of the electrodes 14A and 14B can be configured such that a slit or an opening for radiating light generated inside the arc tube 12 is formed. For example, a technique for forming a slit in an electrode is disclosed in, for example, Japanese Patent Application Laid-Open No. 09-298049.

  As a specific configuration example of the rare gas discharge lamp 11, the arc tube 12 has a length of 450 mm, an outer diameter of 10 mm, and a light emission length of about 420 mm. The amount of xenon gas sealed in the arc tube 12 is in the range of 10 to 40 kPa, for example, 20 kPa. The width of each electrode 14A, 14B is within a range of 0.2 to 4 mm, for example, 4 mm. The rated lighting power is set to about 20-40W.

[Weather resistance testing equipment for solar panels]
<First Embodiment>
FIG. 2 is an explanatory diagram showing an outline of the configuration of an example of a weather resistance test apparatus for solar cell panels according to the first embodiment of the present invention, and FIG. 3 is a solar cell according to the first embodiment of the present invention. It is a perspective view which shows an example of the example of arrangement | positioning of the lamp unit in the weathering test apparatus for panels.
This solar cell panel weather resistance test apparatus (hereinafter simply referred to as “weather resistance test apparatus”) has a processing chamber 46 for performing a predetermined ultraviolet irradiation process on the solar cell panel 41 inside. A rectangular parallelepiped box-shaped housing 45 is provided, and a stage 40 made of, for example, stainless steel, on which the solar cell panel 41 is placed, is disposed inside the processing chamber 46, and a workpiece placement surface extends in the horizontal direction, for example. So arranged.

  A plurality of lamp units 10 each including a plurality of the rare gas discharge lamps 11 are provided on the upper wall of the housing 45 so as to face the solar cell panel 41 placed on the stage 40 in a spaced manner. Yes. Specifically, as shown in FIG. 3, a plurality of (in this example, 20) lamp units 10 are configured such that the lamp central axis C of the rare gas discharge lamp 11 in each lamp unit 10 is the workpiece mounting surface of the stage 40. Are arranged in a plane parallel to each other and two-dimensionally arranged side by side in a posture extending parallel to each other.

As shown in FIG. 4, each lamp unit 10 has a generally box-shaped casing 50 having a light emission opening 51 that opens downward, and a plurality of lamp units 10 are provided in a lower region in the casing 50. The rare gas discharge lamps 11 (in this example, 10) are arranged side by side, for example, at equal intervals, with the lamp center axis C positioned in the same plane and extending parallel to each other.
Two cooling air passage partition walls 26 for partitioning cooling air passages 28 for supplying cooling air to the respective rare gas discharge lamps 11 are provided in a central region in the casing 50 in the direction in which the rare gas discharge lamps 11 are arranged. The inverter accommodating chambers 21 are provided so as to face each other and extend in a direction perpendicular to the lamp arrangement surface S, and thereby, on both sides of the upper region in the casing 50, the inverter accommodating chambers 21 each having a space portion partitioned therein. Is formed. A plurality (10 in this example) of inverters 30 and other electrical components corresponding to each of the rare gas discharge lamps 11 are arranged in the inverter accommodating chamber 21.

The upper wall of the casing 50 is provided with a blower mechanism made up of blower fans 25A and 25B, for example, at a position directly above the cooling air passage 28 and at a position corresponding to each inverter accommodating chamber 21. A blower system that supplies cooling air to the inverter accommodating chamber 21 and a blower system that supplies cooling air to the respective rare gas discharge lamps 11 via the cooling air passage 28 are configured.
The blower fan 25A for introducing the cooling air into the cooling air passage 28 is connected to a temperature adjustment mechanism 55 provided outside the housing 45 of the weathering test apparatus via the branch ventilation duct 61 and the ventilation duct 60A. The cooling air adjusted to an appropriate temperature by the temperature adjusting mechanism 55 is blown (supplied) by the blower fan 25A through the gap between the adjacent rare gas discharge lamps 11 toward the light irradiation surface 41A of the solar cell panel 41. )
In addition, the cooling air blown into the inverter accommodating chamber 21 by the blower fan 25 </ b> B is discharged to the outside of the casing 50 through the ventilating vents (not shown) formed on both side walls of the casing 50. .
Each one of the blower fans 25A and 25B has a blowing capacity capable of supplying the cooling air circulated through the cooling air passage 28 at an air blowing amount of ³ to 10 m ³ / min, for example.

  Further, in the casing 50 of the lamp unit 10, a blower distribution adjusting mechanism 35 that adjusts the wind speed distribution of the cooling air blown from the blower fan 25 </ b> A to each rare gas discharge lamp 11 is provided. Specifically, the air distribution adjustment mechanism 35 is configured by a plate member in which, for example, a slit, a punch hole, or the like is formed, and at a position between the outlet of the cooling air passage 28 and each rare gas discharge lamp 11. It is provided so as to face the lamp arrangement surface S while being spaced apart from each other. Thereby, the cooling efficiency per unit flow rate can be increased, and each rare gas discharge lamp 11 can be cooled under substantially uniform cooling conditions.

  In the lamp unit 10 described above, the peripheral wall portion surrounding the periphery of each noble gas discharge lamp 11 in the casing 50 is configured as a light guide portion 50A having an inner peripheral surface formed by a reflecting surface. A sufficient amount of ultraviolet irradiation can be secured for the battery panel 41, and the influence of the radiant heat of the rare gas discharge lamp 11 on the solar cell panel 41 can be more reliably suppressed. The light guide portion 50A also functions as a guide for cooling air to the solar cell panel 41, and the cooling air that has passed through the gaps between the adjacent rare gas discharge lamps 11 is applied to the light irradiation surface 41A of the solar cell panel 41. The air can be blown from the vertical direction.

  On the lower wall of the housing 45 in this weathering test apparatus, an opening shape is used to discharge the cooling air that has been blown to the solar cell panel 41 at a position on the back side of the stage 40 (a position directly below the stage 40). For example, a circular air outlet 65 is formed, and a ventilation duct 60 </ b> B connected to the temperature adjustment mechanism 55 is connected to the air outlet 65. Therefore, in this weather resistance test apparatus, the cooling air blown to the solar cell panel 41 and brought to a high temperature is introduced into the temperature adjustment mechanism 55, the temperature is adjusted by the temperature adjustment mechanism 55, and then again in each lamp unit 10. It is set as the structure by which the circulation ventilation system which ventilates cooling air toward the solar cell panel 41 with the ventilation fan 25A was constructed | assembled. Here, the cooling condition of the rare gas discharge lamp 11 in each lamp unit 10 is common to all the lamp units 10.

  In each lamp unit 10, the cooling air is passed through the gap between the adjacent rare gas discharge lamps 11 in each lamp unit 10 so that the temperature adjustment mechanism 55 reaches the set temperature when reaching the solar cell panel 41. Therefore, it has a function of adjusting to a temperature lower than the target temperature set in consideration of the temperature rising. For example, in order to maintain the surface temperature of the solar cell panel 41 in the vicinity of 60 ° C., the temperature of the cooling air supplied by the blower fan 25A is adjusted to, for example, 20 to 40 ° C. In this case, the solar cell panel The temperature of the cooling air blown to 41 is 29-49 degreeC, for example, and the temperature of the cooling air discharged | emitted via the exhaust port 65 is 30-50 degreeC, for example.

  Referring to a specific configuration example of the above weathering test apparatus, the dimension W of the housing 45 in the direction in which the rare gas discharge lamps 11 are arranged (left and right in FIG. 2) is, for example, 2900 mm, and the rare gas discharge lamp 11 of the housing 45 is arranged. The dimension D in the lamp central axis direction (direction perpendicular to the paper surface in FIG. 2) is 2100 mm, for example, and the dimension w in the direction in which the rare gas discharge lamps 11 are arranged (the left-right direction in FIG. 2) of the casing 50 in each lamp unit 10 Is, for example, 550 mm, the dimension d of the casing 50 in the lamp central axis direction of the rare gas discharge lamp 11 (direction perpendicular to the paper surface in FIG. 2) is 450 mm, for example, and the separation distance between the adjacent rare gas discharge lamps 11 (lamp central axis) C) is, for example, 50 mm, the lower surface of the stage 40 and the lower wall of the housing 45 The separation distance between them is, for example, 200 mm, the separation distance between the light irradiation surface 41A of the solar cell panel 41 and the lamp arrangement surface S in the lamp unit 10 is, for example, about 300 mm, and the opening diameter of the air outlet 65 is, for example, φ300 mm. . The size of the solar cell panel 41 is, for example, a dimension of 2200 mm in the direction in which the rare gas discharge lamps 11 are arranged (left and right direction in FIG. 2), and the lamp central axis direction of the rare gas discharge lamp 11 (perpendicular to the paper surface in FIG. 2). Is 1400 mm.

Hereinafter, the operation of the weather resistance test apparatus will be described.
In this weather resistance test apparatus, when the solar cell panel 41 is placed on the work placement surface of the stage 40, the rare gas discharge lamps 11 in the respective lamp units 10 are turned on under the same lighting conditions. Ultraviolet rays in a predetermined wavelength range are emitted to the light irradiation surface 41 </ b> A of the solar cell panel 41 with a predetermined amount of ultraviolet rays. Specifically, in each rare gas discharge lamp 11, for example, when a high frequency voltage is supplied to one electrode 14 </ b> A functioning as a high-voltage side electrode via an inverter 30, a glass material ( Dielectric barrier discharge occurs in the inner space of the arc tube 12 via the dielectric), excimer molecules are formed by the dielectric barrier discharge, and light emitted from the excimer molecules (vacuum ultraviolet light of 172 nm in the case of xenon gas) The phosphor material in the phosphor layer 13 is excited and, for example, ultraviolet rays in a wavelength range approximate to the ultraviolet region of sunlight are radiated to the solar cell panel 41 with an ultraviolet light amount of, for example, about five times the maximum of sunlight.

  On the other hand, when the blower fan 25A is driven, the cooling air adjusted to a predetermined temperature by the temperature adjusting mechanism 55 is introduced into each lamp unit 10 through the ventilation duct 60A and the branch ventilation duct 61, and the rare gas discharge lamp. 11 are cooled under the same cooling conditions, and the cooling wind from each lamp unit 10 is blown onto the solar cell panel 41 so that the solar cell panel 41 is maintained at the set target temperature. Is done. Specifically, the cooling air (indicated by the solid line in FIG. 2) introduced into each lamp unit 10 is blown toward each rare gas discharge lamp 11 by the air distribution adjusting mechanism 35 with a substantially uniform wind speed distribution. Then, it passes through the gap between the adjacent rare gas discharge lamps 11, whereby each rare gas discharge lamp 11 is cooled and then flows from the light emission opening 51 toward the solar cell panel 41. Then, the cooling air from each lamp unit 10 (arrows indicated by broken lines in FIG. 2) is blown against the solar cell panel 41 from the direction perpendicular to the light irradiation surface 41A, so that the cooling air is emitted from the solar cell panel 41. The solar cell panel 41 is cooled by flowing along the irradiation surface 41 </ b> A and further flowing around from the entire periphery of the solar cell panel 41 toward the exhaust port 65 located on the back side. . Thereafter, the cooling air (arrow indicated by a two-dot chain line in FIG. 2) is introduced into the temperature adjusting mechanism 55 from the exhaust port 65 through the ventilation duct 60B, cooled to a predetermined temperature, and exhausted outside the weathering test apparatus. Without cooling, the cooling air is blown again to each rare gas discharge lamp 11 by the blower fan 25A in each lamp unit 10.

  In addition, the inverter 30 and other electrical components in each lamp unit 10 are cooled by an independent (separate) blower system and a blower system that blows cooling air to the rare gas discharge lamp 11 and the solar cell panel 41. That is, the cooling air is introduced into the inverter accommodating chamber 21 by driving the blower fan 25B, whereby the inverter 30 and the other electrical components are cooled, and the ventilating air vent formed on the side wall of the casing 50 is used. Exhausted through.

Thus, according to the weather test apparatus having the above-described configuration, the cooling air adjusted to an appropriate temperature by the temperature adjusting mechanism 55 is passed through the gap between the adjacent rare gas discharge lamps 11 by the blower fan 25A, and the solar cell panel. Since the air is blown toward the light irradiation surface 41A of 41, each of the rare gas discharge lamps 11 is uniformly cooled for each lamp, and thus it is possible to suppress variation in luminous efficiency due to uneven cooling. In addition, the influence of the radiant heat on the solar cell panel 41 can be suppressed to a low level, and the cooling air is blown to the light irradiation surface 41A of the solar cell panel 41 from its vertical direction. It can be cooled in a state where the in-plane uniformity of temperature on the light irradiation surface 41A is high. Therefore, the intended ultraviolet irradiation can be performed while maintaining the prescribed temperature conditions without causing temperature unevenness in the solar cell panel 41.
Moreover, since cooling of each rare gas discharge lamp 11 and cooling of the solar cell panel 41 are performed by the blower fan 25A which is a common blower mechanism, it is not necessary to perform complicated control and simplification of the structure. In addition, energy consumption can be reduced.

  Since the temperature adjustment mechanism 55 has a function of adjusting the temperature to a temperature lower than the target temperature set for the light irradiation surface 41 </ b> A of the solar cell panel 41, the temperature of the cooling air is increased by cooling the rare gas discharge lamp 11. However, the temperature of the cooling air blown to the light irradiation surface 41A of the solar cell panel 41 is maintained at a sufficiently low temperature necessary to maintain the temperature of the solar cell panel 41 at the target temperature. Cooling of the rare gas discharge lamp 11 and cooling of the solar cell panel 41 can be performed reliably. Moreover, since the temperature of cooling air should just be adjusted to temperature lower than the target temperature about 41 A of light irradiation surfaces of the solar cell panel 41, temperature control (management) can be performed easily.

  In addition, the cooling air blown to the solar cell panel 41 and having a high temperature is introduced into the temperature adjustment mechanism 55, the temperature is adjusted by the temperature adjustment mechanism 55, and then blown toward the solar cell panel 41 again by the blower fan 25 </ b> A. Since the circulating air blowing system is constructed, it is not necessary to introduce cooling air from the outside of the weathering test device and exhaust the cooling air to the outside of the weathering testing device, so the air blowing system is compact. Can be configured.

  The light discharge surface 41 </ b> A of the solar cell panel 41 is formed at the position on the back side of the stage 40 by forming an exhaust port 65 for discharging the cooling air that has been blown to the solar cell panel 41 and that has become hot. The cooling air can be caused to flow along the light irradiation surface 41A without biasing the flow direction of the cooling air blown from the direction perpendicular to the light irradiation surface 41A. In the solar cell, the cooling air that has flowed along the light irradiation surface 41 </ b> A flows toward the exhaust port 65 toward the back side of the stage 40. Since the panel 41 is cooled from the back side through the stage 40, it is possible to suppress the occurrence of temperature unevenness in the thickness direction of the solar cell panel 41.

  Furthermore, since the rare gas discharge lamp 11 is configured to cause the phosphor layer 13 to emit light by the action of ultraviolet rays (vacuum ultraviolet rays) in a predetermined wavelength region generated in the inner space of the arc tube 12, an extra light component. Is not radiated to the solar cell panel 41, so that the intended weather resistance test can be performed with high reliability.

<Second Embodiment>
FIG. 5 is an explanatory diagram showing an outline of the configuration of an example of a weather resistance test apparatus for a solar cell panel according to the second embodiment of the present invention.
This solar cell panel weather resistance test apparatus (weather resistance test apparatus) has a rectangular parallelepiped box-shaped housing in which a processing chamber 46 for performing a predetermined ultraviolet irradiation process on the solar cell panel 41 is formed. 45, and a fixing member 48 that holds and fixes the solar cell panel 41 in a posture in which the light irradiation surface 41A is positioned in a vertical plane is disposed inside the processing chamber 46.

The fixing member 48 in this example is configured by a rectangular parallelepiped frame whose upper and lower openings are open, and the solar cell panel 41 is slid into the upper and lower ends of each flat side surface. The guide portion 49 having, for example, an L-shaped cross-section is formed so as to extend along the side surface so as to face each other with the groove portions facing upward and downward, and thus, for example, two solar cell panels 41 Can be held and fixed in a state of being opposed to each other in a direction perpendicular to the light irradiation surface 41A. Here, the separation distance of each solar cell panel 41 in the direction perpendicular to the light irradiation surface 41A is, for example, 30 cm or more.
The internal space of the fixing member 48 is a cooling air passage 68 into which a part of the cooling air that has flowed along the light irradiation surface 41A of the solar cell panel 41 is introduced.

  A plurality of lamp units 10 each including a plurality of the rare gas discharge lamps 11 are provided on both side walls of the housing 45 so as to face the solar cell panel 41 held and fixed by the fixing member 48. Yes. Each lamp unit 10 has the same configuration as that shown in FIG. 4, for example, and a plurality of lamp units 10 have a lamp central axis C of the rare gas discharge lamp 11 in each lamp unit 10. The fixing member is arranged in a two-dimensional manner in a vertical and horizontal manner in a posture that is positioned in a vertical plane parallel to the flat side surface and extends horizontally in parallel to each other.

  On the lower wall of the housing 45 in this weathering test apparatus, the cooling air blown to the solar cell panel 41 and discharged at a position immediately below the fixing member 48 is exhausted. The ventilation duct 60 </ b> B connected to the temperature adjustment mechanism 55 is connected to the exhaust port 65. Therefore, in this weather resistance test apparatus, the cooling air blown to the solar cell panel 41 and brought to a high temperature is introduced into the temperature adjustment mechanism 55, the temperature is adjusted by the temperature adjustment mechanism 55, and then again in each lamp unit 10. It is set as the structure by which the circulation ventilation system which ventilates cooling air toward the solar cell panel 41 with the ventilation fan 25A was constructed | assembled. Here, the cooling condition of the rare gas discharge lamp 11 in each lamp unit 10 is common to all the lamp units 10.

  In each lamp unit 10, the cooling air is passed through the gap between the adjacent rare gas discharge lamps 11 in each lamp unit 10 so that the temperature adjustment mechanism 55 reaches the set temperature when reaching the solar cell panel 41. Therefore, it has a function of adjusting to a temperature lower than the target temperature set in consideration of the temperature rising. For example, in order to maintain the surface temperature of the solar cell panel 41 in the vicinity of 60 ° C., the temperature of the cooling air supplied by the blower fan 25A is adjusted to, for example, 20 to 40 ° C. In this case, the solar cell panel The temperature of the cooling air blown to 41 is 29-49 degreeC, for example, and the temperature of the cooling air discharged | emitted via the exhaust port 65 is 30-50 degreeC, for example.

  In the weathering test apparatus according to the second embodiment, the rare gas discharge lamps 11 in each lamp unit 10 are lit under the same lighting conditions in a state where the solar cell panel 41 is held and fixed to the fixing member 48. Thus, ultraviolet rays in a predetermined wavelength range are radiated to the light irradiation surface 41A of the solar cell panel 41 with a predetermined ultraviolet ray amount. Specifically, as in the weather resistance test apparatus according to the first embodiment, in each rare gas discharge lamp 11, for example, a high-frequency voltage is applied to one electrode 14A functioning as a high-voltage side electrode via an inverter 30. Are supplied, the dielectric barrier discharge is generated in the inner space of the arc tube 12 through the glass material (dielectric) constituting the arc tube 12, and the excimer molecule is formed by the dielectric barrier discharge and is emitted from the excimer molecule. The phosphor material in the phosphor layer 13 is excited by the emitted light (172 nm vacuum ultraviolet light in the case of xenon gas), and the ultraviolet ray in the wavelength range that approximates the ultraviolet region of sunlight, for example, is about 5 times the maximum of sunlight. Is radiated to the solar cell panel 41 with the amount of ultraviolet rays.

  On the other hand, when the blower fan in each lamp unit 10 is driven, the cooling air adjusted to a predetermined temperature by the temperature adjusting mechanism 55 is introduced into each lamp unit 10 through the ventilation duct 60A and the branch ventilation duct 61. Then, all the rare gas discharge lamps 11 are cooled under the same cooling conditions, and the cooling air from each lamp unit 10 is blown onto the solar cell panels 41, so that the solar cell panels 41 are set to the set target temperature. Cooled to be maintained. Specifically, the cooling air introduced into each lamp unit 10 (arrow indicated by a broken line in FIG. 5) is blown toward each rare gas discharge lamp 11 with a substantially uniform wind speed distribution by a blow distribution adjusting mechanism. Then, each rare gas discharge lamp 11 is cooled by passing through a gap between adjacent rare gas discharge lamps 11, and thereafter flows from the light emission opening 51 toward the solar cell panel 41. Then, the cooling air from each lamp unit 10 is blown against the solar cell panel 41 from the direction perpendicular to the light irradiation surface 41A, so that the cooling air flows along the light irradiation surface 41A of the solar cell panel 41. Further, a part of the solar cell panel 41 is introduced into the cooling air passage 68 in the fixing member 48 and flows toward the air outlet 65 to cool the solar cell panel 41. Thereafter, the cooling air is introduced into the temperature adjustment mechanism 55 from the air outlet 65 through the ventilation duct 60B, cooled to a predetermined temperature, and exhausted to the outside of the weathering test apparatus again without being discharged to the outside of each weather unit. Cooling air is blown to each rare gas discharge lamp 11 by the blower fan.

  Thus, according to the weather resistance test apparatus having the above configuration, the same effects as those of the weather resistance test apparatus according to the first embodiment can be obtained.

As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment, A various change can be added.
For example, in each of the lamp units, a plurality of rare gas discharge lamps 11 are arranged such that the lamp center axes C extend in parallel with each other on each of a plurality of lamp arrangement surfaces having different level positions with respect to the light emission opening 51 of the casing 50. It may be configured. 6 and 7 show, for example, 17 lamps on the first lamp arrangement surface S1 and the second lamp arrangement surface S2 on each of the first lamp arrangement surface S1 and the second lamp arrangement surface S2 having different level positions. The sixteen rare gas discharge lamps 11 are arranged in parallel at equal intervals, for example, and the first rare gas discharge lamp group arranged on the first lamp arrangement surface S1 is a second lamp. The second rare gas discharge lamp group arranged on the arrangement surface S2 is relatively displaced in the direction in which the rare gas discharge lamps 11 are arranged. Here, a separation distance between adjacent rare gas discharge lamps 11 (a distance between the lamp central axes) is 25 to 35 mm, and for example, 30 mm when the outer diameter of the arc tube 12 is 10 mm. The separation distance between the first lamp arrangement surface S1 and the second lamp arrangement surface S2 is 20 to 40 mm, for example, 30 mm.

In each of the inverter accommodating chambers 21 in this example, two flat inverter fixing plates 32 (A ₁ , A ₂ ), 32 (B ₁ , B ₂ ) each having the same shape are connected to the cooling air passage partition wall 26. The inverter fixing plates 32A ₂ (32B ₂ ) that are arranged in parallel to each other at a predetermined interval so as to extend in parallel and are located on both side walls of the casing 50 are inverter fixing plates that are located on the cooling air passage partition wall 26 side. 32A ₁ (32B ₁ ) is located at a position vertically above lamp arrangement surfaces S1 and S2.
On the outer surface of the inverter fixing plate 32 (A ₁ , A ₂ , B ₁ , B ₂ ) (surface facing the side wall direction of the casing 50), a plurality (in this example, 8 for 32A ₁ and 9 for 32A ₂ ), respectively. one, the inverter 30 of each of eight) to 32B ₁ and 32B ₂ are at the same level position to each other with respect to the second lamp arrangement surface S2, so as to align at a distance from each other in the direction of arrangement of a rare gas discharge lamp 11, disposed Has been. Each inverter 30A ₂ (30B ₂ ) provided on the inverter fixing plate 32A ₂ (32B ₂ ) located on the both side walls of the casing 50 is connected to the inverter fixing plate located on the cooling air passage partition wall 26A side. Each inverter 30A ₁ (32B ₁ ) provided at 32A ₁ (32B ₁ ) is positioned at a level position L2 higher than the level position L1.
Here, the separation distance between the inverters 30 arranged on one inverter fixing plate 32 (A ₁ , A ₂ , B ₁ , B ₂ ) is, for example, 5 to 15 mm. A distance is secured.

In the rare gas discharge lamp 11A of the first rare gas discharge lamp group, a power feeding portion is formed at the end on one end side (left side in FIG. 6) in the axial direction of the electrodes 14A and 14B. Each of inverters 30A ₁ and 30A ₂ located on one end side of 28 is connected to a corresponding noble gas discharge lamp 11A in the first noble gas discharge lamp group via a power supply line 18 connected to the lower end side thereof. ing. Further, in the rare gas discharge lamp 11B of the second rare gas discharge lamp group, a power feeding portion is formed at the other end side (right side in FIG. 6) in the axial direction of the electrodes 14A and 14B, and cooling air Each of the inverters 30B ₁ and B ₂ positioned on the other end side of the path 28 is connected to the corresponding rare gas discharge lamp 11B in the second rare gas discharge lamp group via the power supply line 18 connected to the lower end side thereof. It is connected.
With such a configuration, in each lamp housing chamber 21, a plurality of inverters 30 (A ₁ , A ₂ , B ₁ , B ₂ ) are arranged in a so-called hierarchical structure. In addition, as the level position where the inverter 30 is located becomes farther from the second lamp disposition surface S2, the end where the power feeding portion in the corresponding rare gas discharge lamp 11 is formed can be avoided. By being arranged in a state of being displaced in the axial direction of the rare gas discharge lamp 11 so as to be positioned on the part side, for each rare gas discharge lamp 11, the rare gas discharge lamp 11, the inverter 30, The difference in the length of the power supply line 18 connecting the power supply line 18 can be made as small as possible. Key prevents occurs, or it is possible to reduce suppress variations in UV radiation efficiency can emit ultraviolet desired radiation distribution.

DESCRIPTION OF SYMBOLS 10 Lamp unit 11, 11A, 11B Noble gas discharge lamp 12 Light emission tube 13 Phosphor layer 14A, 14B Electrode 18 Feed line 21 Inverter accommodating chamber 25A, 25B Blower fan 26 Cooling air channel partition wall 28 Cooling air channel 30, 30 (A ₁ , A ₂ ), 30 (B ₁ , B ₂ ) Inverter 32 (A ₁ , A ₂ ), 32 (B ₁ , B ₂ ) Inverter fixing plate 35 Blower distribution adjustment mechanism 40 Stage 41 Solar panel 41 A Light irradiation surface 45 Housing 46 Processing chamber 48 Fixed member 49 Guide part 50 Casing 50A Light guide part 51 Light emission opening 55 Temperature adjustment mechanism 60 Ventilation duct 60A, 60B Ventilation duct 61 Branch ventilation duct 65 Ventilation outlet 68 Cooling air passage 70 Metal halide lamp 75 guide

Claims (6)

  A plurality of rod-shaped noble gas discharge lamps, which are arranged so as to face each other with respect to the light irradiation surface of the solar cell panel and extend in parallel with each other, pass through a gap between adjacent noble gas discharge lamps. And a temperature adjusting mechanism that adjusts the temperature of the cooling air blown by the air blowing mechanism, and a solar cooling air blown toward the light irradiation surface of the solar cell panel. Weathering test equipment for battery panels.   The said temperature adjustment mechanism has a function which adjusts to temperature lower than the setting temperature about the light irradiation surface of the said solar cell panel, The weather test apparatus for solar cell panels of Claim 1 characterized by the above-mentioned.   The cooling air blown to the solar cell panel and heated to a high temperature is introduced into the temperature adjustment mechanism, the temperature is adjusted by the temperature adjustment mechanism, and then the circulating air is blown again toward the solar cell panel by the blower mechanism. The weather resistance test apparatus for solar cell panels according to claim 1 or 2, wherein a system is constructed.   4. At least a part of the cooling air that has flowed along the light irradiation surface of the solar cell panel flows through the back side of the solar cell panel. The weather test apparatus for solar cell panels as described.   The solar cell according to any one of claims 1 to 4, further comprising a ventilation distribution adjusting mechanism that adjusts a wind speed distribution of cooling air blown from the blowing mechanism to each rare gas discharge lamp. Weather test equipment for panels.   6. The rare gas discharge lamp according to claim 1, wherein a pair of electrodes are disposed on the outer surface of the arc tube, and a phosphor is applied to the inner surface of the arc tube. The weather resistance test apparatus for solar cell panels in any one.

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