JP3500352B2 - Solar simulator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar simulator capable of obtaining a large irradiation surface with a small device.

[0002]

2. Description of the Related Art A solar simulator is a light source device for reproducing a natural sunlight spectrum distribution with high accuracy, and it is a performance measurement test and an accelerated deterioration test of various solar energy utilizing devices such as photoelectric conversion characteristics of solar cells. It is indispensable for such things.

A conventional solar simulator is, for example,
As disclosed in Japanese Examined Patent Publication No. 4-241, light from a short arc xenon lamp and light from an incandescent filament lamp are condensed by a lens, a condensing mirror, or the like, and are uniformized through an optical filter or the like. It is designed to irradiate the object to be measured with light, and to prevent the temperature of the object to be measured from rising before the measurement is started by mounting the object to be measured at a predetermined position. Many have a mechanism such as a shutter for blocking.

However, in the above-mentioned device, since the mechanism of the complicated optical system is indispensable, the device becomes large and expensive, and if an attempt is made to realize a large irradiation surface, all the optical systems are required. Since it is necessary to make the device large, it is difficult to manufacture the device, and even if it is realized, it is extremely expensive.

Furthermore, when an optical system such as a lamp, a filter and a lens is provided, an appropriate distance is required between each device,
Although it is inevitable to irradiate the measured object from above to below, solar cells are often manufactured with the irradiation surface facing down, and in conventional devices, the irradiated object is turned over before measurement. In addition, the solar cell may have a convex portion such as a connection terminal for supplying electric power on the back side of the light receiving surface.When the light receiving surface is on top, it is necessary to consider to avoid the convex portion. There are problems such as

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional technique, the present invention has a xenon lamp and a halogen lamp arranged at the lower part of the frame, and emits light while synchronizing each lamp at a constant cycle. It is an object of the present invention to provide a solar simulator that can obtain a large irradiation surface with a small device without using a complicated optical system by repeatedly irradiating and extinguishing the light.

[0007]

The structure of the solar simulator of the present invention made for the purpose of solving the above problems is to arrange the light receiving surface of the object to be measured facing downward.
Upper specification the lower part of the frame of the shaped box which is open optically
With cut optically independent vital upper surface to form individual chambers adjacent the optically open, placing the respective elongated halogen lamp and a xenon lamp in each room, the chambers
Adjust the illuminance unevenness on the back of each lamp facing the opening
Made by installing a dedicated optical filter each reflector is provided and in the open release unit for, it has from the lower receiving surface of the front Symbol measurement target to irradiate a pseudo solar light by the lighting of each lamp It is characterized by.

A reflector is appropriately installed in each room in which the lamp is installed to adjust the illuminance unevenness of the lamp .
Thus, it becomes possible to reduce the irradiation area, the size of the apparatus and the cost. In the above structure, the top in the frame
A reference cell for illuminance measurement is provided on the periphery of the part
Simulate sunlight by lighting each lamp from below on the light receiving surface of the elephant
When irradiating the
The electricity supplied to the lamp by monitoring with a cell
The force may be controlled.

By repeating lighting and extinguishing of the above-mentioned two kinds of lamps at a constant cycle, it is possible to prevent the temperature of the device and the object to be measured from rising and prolong the life of the device. Become.

Further, by providing a mechanism for automatically correcting a change in illuminance due to deterioration of the lamp or after replacement,
The device of the present invention can be used efficiently.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical sectional side view of an example of the device of the present invention, and FIG. 2 is a vertical sectional front view.

In the figure, F is a substantially box-shaped frame, and 1 and 2 are a partition plate S interposed in the lower part of the frame F so that the partition plate S and the outer wall of the frame F are optically independent from each other. Two chambers are formed with their sides open. One chamber 1 is provided with a lamp mounting bracket 3a, and four halogen lamps 3 are mounted here, and the other chamber 2 is mounted with a lamp. Four brackets 4a are erected and four xenon lamps 4 are mounted as in the case of the halogen lamp 3. The number of lamps is not limited to the illustrated example, and may be any number.

Reference numerals 5 and 6 are reflectors installed inside the chambers 1 and 2, and 7 is an acrylic plate attached to an opening above the lamps 3 and 4 in the chambers 1 and 2 formed in the frame F,
Reference numeral 8 denotes an optical filter for a halogen lamp which is placed on the acrylic plate 7 in the chamber 1 and is placed on the halogen lamp 3, and 9 is optical for a xenon lamp which is placed on the acrylic plate 7 in the chamber 2 and is placed on the xenon lamp 4. The filter 10 is an acrylic plate mounted on the top of the frame F in a top plate shape.

Reference numeral 11 is an illuminance measuring reference cell attached to the inner peripheral edge of the upper portion of the frame F, and 12 is cooling by a suction fan or the like attached to one side wall of the frame F so as to communicate with the chambers 1 and 2. Reference numeral 13 denotes a device, 13 is a control device for controlling the illuminance, the lighting period, etc., and A is a solar cell module which is an object to be measured and is placed on the acrylic plate 10.

Next, a method of using the solar simulator as an example of the present invention configured as described above will be described. 1) First, the solar cell module A as a measurement target is placed on the acrylic plate 10, and terminals and measurement probes (both not shown) are connected. 2) When the measurement is started by the operation of the control device 13, the halogen lamp 3 and the xenon lamp 4 are turned on, and each lamp is monitored by the illuminance measurement reference cell 11 to obtain the required illuminance on the measurement surface and supplied from the lamp power supply. To control the power. 3) When the required illuminance is obtained as described above, the controller 13 measures the output from the solar cell module A and stores the data inside the computer. 4) In order to prevent the temperature of the solar cell module A from rising while processing necessary data in the computer or during the waiting time for storing power in the power supply device to turn on the lamps 3 and 4, The lamps 3 and 4 are extinguished until the measurement of 1 is started. 5) Repeat the above 2) to 4) until necessary data is collected for the solar cell module A.

The adjusting method of the simulator of the present invention is as follows. 1) That is, the simulator of the present invention is designed so that the lamps 3, 4 or the frame F can be used in order to obtain uniform illuminance at the manufacturing stage.
Reflectors 5 and 6 are appropriately provided on the inner surface, and the solar cell module A, which is the measurement target, has substantially the same sensitivity even when the light is oblique or scattered light. I was able to measure. 2) Each small electric power generated from the solar cell module A when the small solar cell module A, which is the reference, is irradiated with the same lamp illuminance in each area while sequentially moving each area on the irradiation surface. The light and darkness of each area is measured, and the reflection plates 5 and 6 are adjusted each time. 3) When replacing the lamps 3 and 4, turn on each lamp one by one, measure the illuminance at that time with the reference cell 11, and compare the value with the reference data stored in the computer in advance. To detect the characteristics of each lamp,
Calculate the power value to be supplied to each lamp required for measurement.

[0017]

According to the present invention was as described above, versus the measured
Since the light receiving surface of the elephant is facing downward, the upper part is optically
Partitions the lower portion of the opened box shape in frame the individual chambers adjacent opened optically independent life-and-death upper surface optically
Formed and installed elongated halogen lamps and xenon lamps in each chamber, facing the open part of each chamber.
A reflector for adjusting the illuminance unevenness is provided on the back of each lamp.
Provided and made by installing an optical filter dedicated respectively to the open release part, because I was from below the light-receiving surface of the front Symbol object to be measured to irradiate the solar simulator according to the lighting of the respective <br/> lamp, A large irradiation area can be obtained without requiring a complicated optical system such as a lens and a shutter mechanism as in the conventional pseudo sunlight measuring device, the device itself can be downsized, and the cost of the device can be kept low.

Further, since the lamp is turned off when the measurement is not performed, the temperature change of the solar cell module can be suppressed to a small level.

Further, in the conventional device, since the light receiving surface of the solar cell module faces upward, it is a device which irradiates the light receiving surface from above to below. However, since the solar cell module is often manufactured with the light-receiving surface facing down, it was necessary to turn it over before measurement.However, in the present invention, irradiation is performed from the bottom to the top, so on the manufacturing line. It is possible to measure in the same posture, and there is no need to turn it over.

On the other hand, the solar cell module may have a convex portion such as a connection terminal for supplying electric power on the back side of the light receiving surface, and it was necessary to avoid the convex portion in the conventional device. Then, since the light-receiving surface is measured downward,
The above consideration becomes unnecessary.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an example of a device of the present invention.

FIG. 2 is a vertical sectional front view of FIG.

[Explanation of symbols]

F frame A solar cell module S partition plate 1, 2 rooms 3 halogen lamp 3a Halogen lamp mounting bracket 4 xenon lamp 4a xenon lamp mounting bracket 5,6 reflector 7 Acrylic board 8 Optical filter for halogen lamp 9 Optical filter for xenon lamp 10 acrylic board 11 Reference cell for illuminance measurement 12 Cooling system 13 Control device

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-11-214165 (JP, A) JP-A-4-285843 (JP, A) JP-A-63-217252 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G01N 17/00 F21S 2/00

Claims (4)

(57) [Claims] 1. A light receiving surface of an object to be measured is arranged downward.
Top to form a individual chambers adjacent opened optically independent vital upper surface partitions the lower part of the frame of the shaped box which is open optically optically, elongated, respectively in each room < br /> Halogen lamp and xenon lamp are installed and
There is uneven illuminance on the back of each lamp facing the open part of each room.
It becomes a reflector for adjusting provided and installed an optical filter of each <br/> dedicated to the open- unit, before Symbol to be measured
A solar simulator, wherein a light receiving surface is irradiated with pseudo sunlight from below by illuminating each of the lamps. 2. An illuminance measuring riff around the upper edge of the frame.
Allen cell is installed on the light receiving surface of the measured object from below.
When illuminating simulated sunlight by turning on the lamp,
The illuminance due to irradiation is monitored by the reference cell.
And controlling the power supplied to the lamp.
The described solar simulator. 3. The solar simulator according to claim 1, wherein the two types of lamps are repeatedly turned on and off at a constant cycle. 4. The solar simulator according to claim 1, further comprising a mechanism for automatically correcting a change in illuminance due to deterioration or replacement of the lamp.