CN213693635U

CN213693635U - Photovoltaic module light attenuation test box

Info

Publication number: CN213693635U
Application number: CN202022492195.XU
Authority: CN
Inventors: 孟祥武; 张昌远; 何涛; 肖怀韬; 王帅; 欧森; 张艳飞
Original assignee: LIANYUNGANG SHENZHOU NEW ENERGY CO Ltd
Current assignee: LIANYUNGANG SHENZHOU NEW ENERGY CO Ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-07-13
Anticipated expiration: 2030-11-02

Abstract

The utility model relates to a test box for testing light attenuation of a photovoltaic module, which comprises a test box body 1, wherein the middle part of the test box body 1 is provided with a fixed frame 2, and the fixed frame 2 is provided with an air duct 3 and a plurality of lamp tubes 4; two adjustable supports 14 are arranged in the test box body 1, the photovoltaic module 5 is detachably arranged on the adjustable supports 14, and an irradiation intensity probe 6 and a temperature probe 7 are arranged in the test box body 1; the outer wall of the test box body 1 is provided with a test box control disk 8, a computer display screen 9, a multi-path power supply 10 and a computer host 11. The utility model discloses can two-sidedly utilize the light source, the availability factor doubles, and temperature control system, electrical power generating system of arranging simultaneously can carry out the experiment of variety.

Description

Photovoltaic module light attenuation test box

Technical Field

The utility model relates to a photovoltaic module technical field, concretely relates to photovoltaic module light attenuation test box.

Background

Light Induced Degradation (LID) is a ubiquitous phenomenon of photovoltaic modules, and is associated with the quality assurance of products along with the full life cycle of photovoltaic module applications. The essential reason for LID generation is that recombination centers are generated inside the material after the solar cells are illuminated. It is now well recognized that boron-oxygen complexes generated after illumination reduce the minority carrier lifetime. The deeper energy level defects formed by exciting substitutional boron and interstitial oxygen in the boron-doped crystalline silicon under illumination cause carrier recombination and battery performance degradation, so that the output power of the photovoltaic module is greatly and rapidly reduced within a few days of initial application, but the output power is gradually stabilized after a period of time (generally 2-3 months). In recent years, it has been found that a Light attenuation phenomenon (LeTID) at a high Temperature is more serious than the LID phenomenon, and the Light attenuation phenomenon can be stabilized with an increase in the amount of Light and with the lapse of time.

In order to research the light-induced attenuation phenomenon of the photovoltaic module and provide a high-quality and reliable photovoltaic module, a batch photovoltaic module initial light-induced attenuation test needs to be carried out, and in addition, a mass-produced product also needs to be monitored by the light-induced attenuation test. The utility model discloses a high-efficient proof box who utilizes the light source, the light source both sides can all be tested, have realized the two-sided utilization of light source, have improved test efficiency, and experimental condition control is more accurate simultaneously, and diversified tests such as LID, LeTD can be carried out to collocation temperature control system, electrical power generating system.

The light attenuation test is used for testing the attenuation condition of the photovoltaic module under sunlight, the sunlight is the best test light source, but the sunlight is limited by geographical positions, climatic conditions, environmental factors and the like, and the sunlight can be used in a limited way, cannot be adjusted, can stabilize the irradiation intensity and cannot be continuously illuminated. The indoor simulated light attenuation test equipment is developed, the light attenuation test can be carried out all weather without being limited by external conditions, the existing test equipment has many top light sources and side light sources, and comprises circular, square and strip-shaped lamp tubes, the lamp sources comprise xenon lamps and metal halogen lamps, the effective irradiation area can be customized according to the requirement, the larger the area is, the lower the precision is, and the equipment for the light attenuation test can meet the use requirement when reaching the level B or the level C.

The existing light attenuation test equipment mostly adopts a top or side mounted light source, the utilization rate of the light source is low, and the irradiation area is limited. The test space is divided into a test box and an indoor closed space, the test box is used as an irradiation space, and no matter a top or side light source, the irradiation area is small and a single surface is utilized. The indoor closed space is adopted, the temperature control precision is low, the energy consumption is high, the investment cost is high, and the occupied space is large. The utility model discloses mainly for solving these problems, make things convenient for the laboratory to carry out the light attenuation test.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model provides a photovoltaic module light attenuation test box, specific technical scheme is as follows:

a test box for testing light attenuation of a photovoltaic module comprises a test box body (1), wherein a fixed frame (2) is arranged in the middle of the test box body (1), and a ventilation pipeline (3) and a plurality of lamp tubes (4) are arranged on the fixed frame (2); two adjustable supports (14) are arranged in the test box body (1), the two adjustable supports (14) are respectively arranged at the left end and the right end of the bottom surface of the test box body (1), the photovoltaic module (5) is detachably arranged on the adjustable supports (14), irradiation intensity probes (6) are arranged on the left side wall and the right side wall of the test box body (1), and temperature probes (7) are arranged in the test box body (1);

the outer wall of the test box body (1) is provided with a test box control panel (8), a computer display screen (9), a multi-path power supply (10) and a computer host (11), and the temperature probe (7), the irradiation intensity probe (6), the computer display screen (9) and the test box control panel (8) are electrically connected with the computer host (11), so that the test box body (1) is automatically controlled;

the rear wall of the test box body (1) is of a double-layer structure to form an interlayer (101), the interlayer (101) is connected with an air conditioner (12) through a pipeline, a plurality of through holes (102) are formed in the inner layer of the rear wall and used for ventilating the test box body, and the temperature of the test box body is controlled by adjusting the air conditioner according to test requirements; the air conditioner is connected with the test box control panel to realize automatic control of the air conditioner.

Further, adjustable support (14) include two telescopic links (1401) and scalable board (1402), but two telescopic links (1401) pass two long sides of scalable board (1402) respectively, fixed block (1403) are installed respectively to the both ends of two telescopic links (1401), fixed block (1403) on all be provided with the screw, pass the screw of the fixed block of two thickness directions with bolt (1404) to press from both sides the photovoltaic module tight and fix on adjustable support.

Furthermore, the lamp tube (4) is covered with a lamp box (13), the lamp box (13) is hermetically connected with the ventilation pipeline (3), and the temperature of the lamp box is reduced through the ventilation pipeline (3).

Furthermore, the left side surface and the right side surface of the lamp box (13) are respectively provided with a plurality of filter sheet clamping grooves (1301), the filter sheets are detachably installed on the lamp box, and the illumination intensity of the filter sheets on the photovoltaic module is controlled through installing different filter sheets.

Furthermore, an air outlet through hole (1302) is formed in the lamp box (13), and when cold air is blown into the lamp box through the ventilation pipeline to cool, the air is discharged out of the lamp box through the air outlet through hole.

Furthermore, a plurality of air outlets (15) are arranged on the rear wall of the test box body.

The lamp tube is arranged in the middle of the lamp box and is a strip-shaped lamp tube which can be a xenon lamp or a metal halogen lamp. The lamp tube can be used for adjusting the irradiation intensity, and tests under different irradiation intensities can be carried out according to requirements. The lamp tube meets the requirements of the simulator above the C level according to the requirements. The upper and lower surfaces of the light box (13) are opaque, only the left and right sides being light transmissive.

The photovoltaic module is placed on the adjustable supports (14) on the two sides of the test box, the adjustable supports (14) are provided with adjusting locking structures and can adapt to the photovoltaic modules with different widths and thicknesses, the thickness range of the single-glass and double-glass assemblies is 5-40mm at present, the width is 1300mm, and the adjustable supports (14) can be fixed.

The irradiation intensity probes are arranged on two sides of the test box, so that the real-time irradiation intensity and the accumulated irradiation intensity can be monitored.

The control module of the test box comprises parameter settings such as illumination, temperature, time and the like.

The test chamber has multiple power supplies, and each power supply can provide voltage: 0-80V and 0-15A of current, can be controlled by a program and matched with a power supply, and the test box can also be used for performing an electroattenuation test, a LeTID test at high temperature and the like.

The utility model has the advantages that: the utility model discloses can two-sidedly utilize the light source, both sides are tested simultaneously, and efficiency is higher. The light source is linearly adjustable, and the test requirements of different irradiance are met. The LeTID test can be carried out by matching with a power supply control system. The universal adjustable support is suitable for different plate types. The utility model discloses can two-sidedly utilize the light source, the availability factor doubles, and temperature control system, electrical power generating system of arranging simultaneously can carry out the experiment of variety.

Drawings

Fig. 1 is a schematic structural diagram of a photovoltaic module light attenuation test box according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a longitudinal side section of an interlayer of a rear wall of a photovoltaic module light attenuation test chamber according to an embodiment of the present invention.

Fig. 3 is a front view of an adjustable support of a test box for testing light attenuation of a photovoltaic module according to an embodiment of the present invention.

Fig. 4 is a front view of a lamp box of a test box for testing light attenuation of a photovoltaic module according to an embodiment of the present invention.

Fig. 5 is a side view of the fixing frame of the lamp box of the test box for testing light attenuation of the photovoltaic module according to the embodiment of the present invention.

The device comprises a test box body, a 101 interlayer, a 102 through hole, a 2 fixing frame, a 3 ventilation pipeline, a 4 lamp tube, a 5 photovoltaic component, a 6 irradiation intensity probe, a 7 temperature probe, a 8 test box control panel, a 9 computer display screen, a 10 multi-channel power supply, a 11 computer host, a 12 air conditioner, a 13 lamp box, a 1301 filter sheet clamping groove, a 1302 air outlet through hole, a 14 adjustable support, a 1401 telescopic rod, a 1402 telescopic plate, a 1403 fixing block, a 1404 bolt and a 15 air outlet.

The specific implementation mode is as follows:

in order to deepen understanding of the present invention, the following detailed description is made on the embodiments of the present invention with reference to the accompanying drawings.

It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relation change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function and the achievable purpose of the present invention.

Examples

With reference to figures 1 to 5 of the drawings,

a test box for testing light attenuation of a photovoltaic module comprises a test box body 1, wherein a fixed frame 2 is arranged in the middle of the test box body 1, and a ventilating duct 3 and a plurality of lamp tubes 4 are arranged on the fixed frame 2; two adjustable supports 14 are arranged inside the test box body 1, the two adjustable supports 14 are respectively arranged at the left end and the right end of the bottom surface of the test box body 1, the photovoltaic module 5 is detachably arranged on the adjustable supports 14, the left side wall and the right side wall of the test box body 1 are provided with the irradiation intensity probes 6, and the temperature probes 7 are arranged inside the test box body 1;

the outer wall of the test box body 1 is provided with a test box control disc 8, a computer display screen 9, a multi-path power supply 10 and a computer host 11, and the temperature probe 7, the irradiation intensity probe 6, the computer display screen 9 and the test box control disc 8 are all electrically connected with the computer host 11, so that the test box body 1 is automatically controlled;

the rear wall of the test box body 1 is of a double-layer structure to form an interlayer 101, the interlayer 101 is connected with an air conditioner 12 through a pipeline, a plurality of through holes 102 are formed in the inner layer of the rear wall and used for ventilating the test box body, and the temperature of the test box body is controlled by adjusting the air conditioner according to test requirements; the air conditioner is connected with the test box control panel to realize automatic control of the air conditioner.

Further, the adjustable support 14 comprises two telescopic rods 1401 and a telescopic plate 1402, wherein the two telescopic rods 1401 penetrate through two long side surfaces of the telescopic plate 1402 respectively, fixing blocks 1403 are installed at two ends of the two telescopic rods 1401 respectively, screw holes are formed in the fixing blocks 1403 respectively, and bolts 1404 penetrate through the screw holes of the two fixing blocks in the thickness direction, so that the photovoltaic module is clamped and fixed on the adjustable support.

Further, the lamp tube 4 is covered with a lamp box 13, the lamp box 13 is hermetically connected with the ventilation pipeline 3, and the temperature of the lamp box is reduced through the ventilation pipeline 3.

Further, a plurality of filter clamping grooves 1301 are respectively arranged on the left side face and the right side face of the lamp box 13, the filters are detachably mounted on the lamp box, and illumination intensity of the light irradiating on the photovoltaic module is controlled through mounting different filters.

Further, an air outlet through hole 1302 is formed in the lamp box 13, and when the ventilation duct blows cold air into the lamp box for cooling, the air is discharged out of the lamp box through the air outlet through hole.

Further, a plurality of air outlets 15 are arranged on the rear wall of the test box body.

The lamp tube is arranged in the middle of the lamp box and is a strip-shaped lamp tube which can be a xenon lamp or a metal halogen lamp. The lamp tube can be used for adjusting the irradiation intensity, and tests under different irradiation intensities can be carried out according to requirements. The lamp tube meets the requirements of the simulator above the C level according to the requirements.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims

1. The test box for testing the light attenuation of the photovoltaic module is characterized by comprising a test box body (1), wherein a fixed frame (2) is arranged in the middle of the test box body (1), and a ventilation pipeline (3) and a plurality of lamp tubes (4) are arranged on the fixed frame (2); two adjustable supports (14) are arranged in the test box body (1), the two adjustable supports (14) are respectively arranged at the left end and the right end of the bottom surface of the test box body (1), the photovoltaic module (5) is detachably arranged on the adjustable supports (14), irradiation intensity probes (6) are arranged on the left side wall and the right side wall of the test box body (1), and temperature probes (7) are arranged in the test box body (1);

2. The test box for testing the light attenuation of the photovoltaic module according to claim 1, wherein the adjustable support (14) comprises two telescopic rods (1401) and a telescopic plate (1402), the two telescopic rods (1401) respectively penetrate through two long side surfaces of the telescopic plate (1402), fixing blocks (1403) are respectively installed at two ends of the two telescopic rods (1401), screw holes are formed in the fixing blocks (1403), and bolts (1404) penetrate through the screw holes of the two fixing blocks in the thickness direction, so that the photovoltaic module is clamped and fixed on the adjustable support.

3. The test box for testing the light attenuation of the photovoltaic module according to claim 1, wherein a lamp box (13) is covered outside the lamp tube (4), the lamp box (13) is hermetically connected with a ventilation duct (3), and the temperature of the lamp box is reduced through the ventilation duct (3).

4. The test box for testing the light attenuation of the photovoltaic module according to claim 3, wherein a plurality of filter clamping grooves (1301) are respectively formed in the left side surface and the right side surface of the light box (13), the filter is detachably mounted on the light box, and the illumination intensity on the photovoltaic module is controlled by mounting different filters.

5. The test box for testing the light attenuation of the photovoltaic module according to claim 3, wherein the lamp box (13) is provided with an air outlet through hole (1302), and when cold air is blown into the lamp box through the ventilation duct to cool, the air is exhausted out of the lamp box through the air outlet through hole.

6. The test box for testing the light attenuation of the photovoltaic module according to claim 1, wherein a plurality of air outlets (15) are arranged on the rear wall of the test box body.