CN219348491U

CN219348491U - Photovoltaic module load testing device

Info

Publication number: CN219348491U
Application number: CN202320378064.XU
Authority: CN
Inventors: 朱晨; 邵亚辉; 邬林佳; 顾云霞; 高国雄
Original assignee: Zhejiang Jianheng Testing Technology Co ltd
Current assignee: Zhejiang Jianheng Testing Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-14
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses a photovoltaic module load testing device, which comprises a testing mechanism and a temperature room, wherein the testing mechanism is arranged in the temperature room; the testing mechanism comprises a base, and a fixing frame is arranged on the base; the base is provided with a plurality of gate-type test frames, the test frames are provided with a plurality of pulling and pressing assemblies, each pulling and pressing assembly comprises a cylinder, a pressure sensor and a vacuum chuck, the cylinders are arranged on the test frames, the vacuum chucks are arranged on piston rods of the cylinders through connecting rods, and the pressure sensors are arranged on the connecting rods of the vacuum chucks; and heating plates are arranged on the vacuum sucker, the pressure sensor and the air cylinder. According to the utility model, the testing mechanism is arranged in the temperature room, the photovoltaic module can carry out load detection at normal temperature or low temperature, and the heating plates are arranged on the pulling and pressing module in the low temperature environment, so that the normal work of the pulling and pressing module at low temperature can be ensured, and the testing accuracy is ensured.

Description

Photovoltaic module load testing device

Technical Field

The utility model relates to the technical field of photovoltaic module testing, in particular to a photovoltaic module load testing device.

Background

Along with the popularization of photovoltaic power stations, the installation environment of the photovoltaic modules is more and more complex, and the environmental adaptability of the photovoltaic modules is more and more required, so that the mechanical properties of the photovoltaic modules are more important. When the assembly is subjected to wind, snow or ice, etc., it is necessary to verify the load conditions that the photovoltaic assembly can withstand. The load test is divided into a static load test and a dynamic load test, wherein the static load test is mainly used for verifying the bearing capacity of the photovoltaic module after a large amount of snow or ice is covered on the photovoltaic module, and checking whether the photovoltaic module is reliable under static and unchanged pressure. The test method can be sand pressure, air pressure or water pressure, and the pressure applied to the assembly needs to be uniform and durable in the whole test process (each test surface needs to be tested for 1h and the positive and negative test is performed for 3 cycles). The dynamic load test is used for verifying whether the photovoltaic module bears alternating pressure in the forward direction and the reverse direction, and whether the front surface and the rear surface oscillate and shake reliably or not.

When the existing photovoltaic module is subjected to load test, the existing photovoltaic module is usually in a normal temperature state, but in actual use, the photovoltaic module can be placed in a low-temperature environment, and the temperature can also influence the load test of the photovoltaic module, so that the mechanical performance test of the photovoltaic module is inaccurate.

Disclosure of Invention

In order to solve the problems, the utility model provides a load testing device for a photovoltaic module, which can test the load of the photovoltaic module in different environments.

For this purpose, the technical scheme of the utility model is as follows: the photovoltaic module load testing device comprises a testing mechanism and a temperature room, wherein the testing mechanism is arranged in the temperature room; the testing mechanism comprises a base, and a fixing frame is arranged on the base; the base is provided with a plurality of gate-type test frames, the test frames are provided with a plurality of pulling and pressing assemblies, each pulling and pressing assembly comprises a cylinder, a pressure sensor and a vacuum chuck, the cylinders are arranged on the test frames, the vacuum chucks are arranged on piston rods of the cylinders through connecting rods, and the pressure sensors are arranged on the connecting rods of the vacuum chucks; and heating plates are arranged on the vacuum sucker, the pressure sensor and the air cylinder.

During the use, with the photovoltaic module fixed mounting who waits to detect on the mount, the cylinder drives vacuum chuck and moves down, with photovoltaic module upper surface laminating, exerts the effort through drawing, pressing two kinds of forms to carry out the load test to photovoltaic module. The temperature in the temperature room can be set to-40 to-20 ℃, so that the photovoltaic module is subjected to load test in a low-temperature environment, and the vacuum chuck, the pressure sensor and the heating plate on the air cylinder start to work at the moment, so that the problem that the vacuum chuck, the pressure sensor and the air cylinder work at low temperature is avoided.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the vacuum chuck is inside to be equipped with first heating plate, and pressure sensor and cylinder outside all wrap up there is the heat preservation, are equipped with the second heating plate in the heat preservation. The first heating plate of the vacuum chuck is arranged on the inner side of the chuck and can heat the chuck; the pressure sensor and the air cylinder are directly provided with the second heating plate outside and are fixed by the heat insulation layer, so that the pressure sensor and the air cylinder work normally in a low-temperature environment.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the heat preservation layer is formed by wrapping heat preservation cotton, and a fastening ring is arranged on the outer side of the heat preservation cotton. The fastening ring can fix the heat preservation cotton outside the cylinder or the pressure sensor, so that the second heating plate can be fixed, and heat preservation can be realized.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: an infrared ranging sensor is arranged in the middle of the base and is positioned below the fixing frame. The infrared pulse sensor detects the deformation of the photovoltaic panel by emitting a particularly short pulse of light and measuring the time that the pulse of light is reflected back from the emitted light to the photovoltaic panel, and calculating the distance to the photovoltaic panel by measuring the time.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the two sides of the base are respectively provided with a sliding rail, the bottom of the test rack is provided with a sliding block, and the sliding blocks are in sliding fit with the sliding rails; the bottom of the test frame is also provided with a fastening piece, the fastening piece is provided with a fastening knob, the fastening knob can be tightly matched with the base, and the test frame and the base are mutually locked. The test frame can be moved along the slide rail, the position of the test point is adjusted, and after the test point is adjusted in place, the test frame is fixed by using the fastener, so that the photovoltaic modules with different specifications can be conveniently tested.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the cross beam of the test frame is provided with scale marks, and a plurality of tension and compression assemblies are arranged on the cross beam side by side. The pulling and pressing assembly can be installed according to the scale marks, and the position of the pulling and pressing assembly is guaranteed to meet the testing requirement.

Compared with the prior art, the utility model has the beneficial effects that: the testing mechanism is arranged in the temperature room, the photovoltaic module can carry out load detection at normal temperature or low temperature, and the heating plates are arranged on the pulling and pressing module in the low temperature environment, so that the vacuum chuck, the pressure sensor and the air cylinder can be heated, the normal work of the vacuum chuck, the pressure sensor and the air cylinder at low temperature is ensured, and the testing accuracy is ensured.

Drawings

The following is a further detailed description of embodiments of the utility model with reference to the drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a structural cross-sectional view of the pulling and pressing assembly of the present utility model.

Marked in the figure as: the temperature room 1, the base 2, the slide rail 21, the test frame 3, the sliding block 31, the fastening piece 32, the fastening knob 33, the scale mark 34, the pulling and pressing assembly 4, the air cylinder 41, the pressure sensor 42, the vacuum chuck 43, the first heating sheet 44, the first heat preservation layer 45, the second heating sheet 46, the second heat preservation layer 47, the third heating sheet 48, the fastening ring 49, the fixing frame 5, the infrared ranging sensor 6 and the photovoltaic assembly 7.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

See the drawings. The photovoltaic module load testing device comprises a testing mechanism and a temperature room 1, wherein the testing mechanism is arranged in the temperature room; the testing mechanism comprises a base 2, a plurality of door-shaped testing frames 3 are arranged on the base 2, sliding rails 21 are respectively arranged on two sides of the base 2, a sliding block 31 is arranged at the bottom of the testing frame 3, and the sliding block 31 is in sliding fit with the sliding rails 21; the bottom of the test frame 3 is also provided with a fastening piece 32, the fastening piece 32 is provided with a fastening knob 33, the fastening knob 33 can be tightly matched with the base 2, and the test frame 3 and the base 2 are mutually locked. The cross beam of the test frame 3 is provided with scale marks 34, and a plurality of tension and compression assemblies 4 are arranged on the cross beam of the test frame 3 side by side. The pulling and pressing assembly can be installed according to the scale marks, and the position of the pulling and pressing assembly is guaranteed to meet the testing requirement. The test frame can be moved along the slide rail, the position of the test point is adjusted, and after the test point is adjusted in place, the test frame is fixed by using the fastener, so that the photovoltaic modules with different specifications can be conveniently tested.

The base 2 is provided with a fixing frame 5, the fixing frame 5 is positioned below the test frame 3, and the photovoltaic module 7 to be detected is arranged on the fixing frame. An infrared ranging sensor 6 is arranged in the middle of the base 2, and the infrared ranging sensor 6 is positioned below the fixing frame 5. The infrared pulse sensor detects the deformation of the photovoltaic panel by emitting a particularly short pulse of light and measuring the time that the pulse of light is reflected back from the emitted light to the photovoltaic panel, and calculating the distance to the photovoltaic panel by measuring the time.

The pulling and pressing assembly 4 comprises a cylinder 41, a pressure sensor 42 and a vacuum chuck 43, wherein the cylinder 41 is arranged on the test frame 3, the vacuum chuck 43 is arranged on a piston rod of the cylinder 41 through a connecting rod, the pressure sensor 42 is positioned on the connecting rod of the vacuum chuck, and the vacuum chuck is connected with a vacuum generator; the vacuum chuck 43 is internally provided with a first heating plate 44, a first heat preservation layer 45 is wrapped outside the air cylinder 41, a second heating plate 46 is arranged in the first heat preservation layer 45, a second heat preservation layer 47 is wrapped outside the pressure sensor 42, and a third heating plate 48 is arranged in the second heat preservation layer 47; the heat preservation is wrapped up in by the heat preservation cotton, and the heat preservation cotton outside is equipped with fastening circle 49. The first heating plate of the vacuum chuck is arranged on the inner side of the chuck and can heat the chuck; the pressure sensor and the air cylinder are directly provided with a second heating plate outside and are fixed by an insulating layer, so that the pressure sensor and the air cylinder work normally in a low-temperature environment; the fastening ring can fix the heat preservation cotton outside the cylinder or the pressure sensor, so that the second heating plate can be fixed, and heat preservation can be realized.

When the test device is used, the photovoltaic module to be detected is fixedly arranged on the fixing frame, and load test is started:

1. static load test: the cylinder drives the vacuum chuck to move downwards to be attached to the upper surface of the photovoltaic module, acting force is applied through pulling and pressing, each test surface needs to be tested for 1h, positive and negative tests are carried out for 3 cycles, the actual load of the front surface of the photovoltaic module is 5400Pa, the actual load of the back surface of the photovoltaic module is 2400Pa, and meanwhile, the current continuity of the module needs to be monitored in the test process.

2. Dynamic load test: the positions among the cylinders are adjusted to ensure that the load is uniformly distributed, the center distance between the suction cups is ensured, and the distance between the center of the suction cup and the edge of the component is not more than 200mm; setting test parameters: and the circulation is carried out for 1000 times, 3-7 cycles are completed per minute, the maximum pressure is +/-1000 Pa, and the current continuity of the component needs to be monitored in the test process.

3. Detecting at low temperature, and adjusting the temperature of the temperature room to be in a low temperature state (-40 to minus 20 ℃), wherein the vacuum chuck, the pressure sensor and the heating plate on the air cylinder start to work at the moment, so that the problem that the vacuum chuck, the pressure sensor and the air cylinder work at low temperature is avoided; and then repeating the static load test in the step 1 or the dynamic load test in the step 2.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The utility model provides a photovoltaic module load testing arrangement which characterized in that: the device comprises a testing mechanism and a temperature room, wherein the testing mechanism is arranged in the temperature room; the testing mechanism comprises a base, and a fixing frame is arranged on the base; the base is provided with a plurality of gate-type test frames, the test frames are provided with a plurality of pulling and pressing assemblies, each pulling and pressing assembly comprises a cylinder, a pressure sensor and a vacuum chuck, the cylinders are arranged on the test frames, the vacuum chucks are arranged on piston rods of the cylinders through connecting rods, and the pressure sensors are arranged on the connecting rods of the vacuum chucks; and heating plates are arranged on the vacuum sucker, the pressure sensor and the air cylinder.

2. The photovoltaic module load testing device of claim 1, wherein: the vacuum chuck is inside to be equipped with first heating plate, and pressure sensor and cylinder outside all wrap up there is the heat preservation, are equipped with the second heating plate in the heat preservation.

3. The photovoltaic module load testing device of claim 2, wherein: the heat preservation layer is formed by wrapping heat preservation cotton, and a fastening ring is arranged on the outer side of the heat preservation cotton.

4. The photovoltaic module load testing device of claim 1, wherein: an infrared ranging sensor is arranged in the middle of the base and is positioned below the fixing frame.

5. The photovoltaic module load testing device of claim 1, wherein: the two sides of the base are respectively provided with a sliding rail, the bottom of the test rack is provided with a sliding block, and the sliding blocks are in sliding fit with the sliding rails; the bottom of the test frame is also provided with a fastening piece, the fastening piece is provided with a fastening knob, the fastening knob can be tightly matched with the base, and the test frame and the base are mutually locked.

6. The photovoltaic module load testing device of claim 1, wherein: the cross beam of the test frame is provided with scale marks, and a plurality of tension and compression assemblies are arranged on the cross beam side by side.