Photoelectric conversion efficiency measuring device

Abstract

The utility model belongs to the technical field of photovoltaic power generation, and discloses a photoelectric conversion efficiency measuring device which is used for measuring the photoelectric conversion efficiency of a solar cell panel and comprises a support, a first detection assembly, a second detection assembly, a third detection assembly and a data acquisition instrument. The support comprises support rods and support legs, the support rods are connected to the support legs, and the support legs are used for supporting the support rods. The first detection assembly is connected to the support rod and used for detecting multiple sets of data of the natural environment. The second detection assembly is connected to the support rod and electrically connected with the solar cell panel, and the second detection assembly is used for detecting the output power of the solar cell panel. The third detection assembly is connected to the solar cell panel and is used for detecting multiple groups of data of the solar cell panel. The data acquisition instrument is connected to the support rod, and the first detection assembly, the second detection assembly and the third detection assembly are all in communication connection with the data acquisition instrument so that acquired data can be stored in the data acquisition instrument.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation technical field especially relates to a photoelectric conversion efficiency measuring device. BACKGROUND

[0002] Photovoltaic power generation is a kind of technology using the photovoltaic effect of semiconductor interface to convert light energy into electric energy directly.Mainly by solar cell panel, controller and inverter three big parts are composed.In recent years, with the development of renewable energy, photovoltaic power generation is widely used in civil building, especially the large-area application of roof photovoltaic system.

[0003] Photoelectric conversion efficiency directly influences the power generation effect of system, and has direct influence to the power balance of whole building and the power grid allocation electric quantity after grid-connected power generation.Therefore, photovoltaic system needs to be tested after installation, especially the rapid on-site measurement of photoelectric conversion efficiency.

[0004] The existing on-site measurement of photoelectric conversion efficiency does not have complete special measuring device, and there are many measuring instruments, not convenient to carry, and its adaptability to outdoor climate is poor, and the position of measuring instrument cannot be flexibly adjusted according to the on-site state. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a photoelectric conversion efficiency measuring device, which can flexibly adjust the position of measuring instrument, and conveniently measure the photoelectric conversion efficiency rapidly on site.

[0006] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0007] A photoelectric conversion efficiency measuring device for measuring the photoelectric conversion efficiency of solar cell panel, comprising:

[0008] A support, the support comprises a support rod and a support foot, and the support rod is connected to the support foot;

[0009] A first detection assembly, the first detection assembly is connected to the support rod, and the first detection assembly is used for detecting multiple groups of data of natural environment;

[0010] A second detection assembly, the second detection assembly is connected to the support rod and electrically connected to the solar cell panel, and the second detection assembly is used for detecting the output power of the solar cell panel;

[0011] A third detection assembly, the third detection assembly is connected to the solar cell panel, and the third detection assembly is used for detecting multiple groups of data of the solar cell panel;

[0012] A data acquisition instrument is connected to the support rod, and the first detection component, the second detection component and the third detection component are in communication connection with the data acquisition instrument.

[0013] As a preferred scheme of the photoelectric conversion efficiency measuring device, the photoelectric conversion efficiency measuring device further comprises a connecting frame, a plurality of mounting spaces are formed on the connecting frame, and the first detection component, the second detection component and the data acquisition instrument are respectively mounted in different mounting spaces.

[0014] As a preferred scheme of the photoelectric conversion efficiency measuring device, the connecting frame comprises a plurality of connecting rods, each of the connecting rods forms at least one mounting position, the first detection component comprises an infrared instrument, an irradiance sensor, an ambient temperature sensor, an ambient humidity sensor and a wind speed sensor, and the infrared instrument, the irradiance sensor, the ambient temperature sensor, the ambient humidity sensor and the wind speed sensor are respectively mounted on different mounting positions.

[0015] As a preferred scheme of the photoelectric conversion efficiency measuring device, the plurality of mounting positions are arranged in a ring along the circumference of the support rod, and are arranged with a spacing from the support rod.

[0016] As a preferred scheme of the photoelectric conversion efficiency measuring device, the ambient temperature sensor and the ambient humidity sensor are mounted on one mounting position.

[0017] As a preferred scheme of the photoelectric conversion efficiency measuring device, two supports are provided, and three of the infrared instrument, the irradiance sensor, the ambient temperature sensor, the ambient humidity sensor and the wind speed sensor are connected to the support rod of one support, and the other two are connected to the support rod of the other support.

[0018] As a preferred scheme of the photoelectric conversion efficiency measuring device, the support foot is a tripod, and the three legs of the tripod are foldable.

[0019] As a preferred scheme of the photoelectric conversion efficiency measuring device, the photoelectric conversion efficiency measuring device further comprises a waterproof box, the waterproof box is connected to the support rod, and the data acquisition instrument is mounted in the waterproof box.

[0020] As a preferred scheme of the photoelectric conversion efficiency measuring device, the first detection component, the second detection component and the data acquisition instrument are detachably connected to the support rod.

[0021] As a preferred scheme of the photoelectric conversion efficiency measuring device, the photoelectric conversion efficiency measuring device further comprises a thermal imager for detecting temperature distribution of the surface of the solar cell panel, and the thermal imager is in communication connection with the data acquisition instrument.

[0022] The photoelectric conversion efficiency measuring device has the advantages that:

[0023] The utility model provides a photoelectric conversion efficiency measuring device for measuring the photoelectric conversion efficiency of solar cell panel, it includes support, first detection subassembly, second detection subassembly, third detection subassembly and data acquisition instrument. The support includes support pole and support foot, support pole is connected in support foot, and support foot is used for supporting support pole. First detection subassembly is connected in support pole, and first detection subassembly is used for detecting the multiple sets of data of natural environment. Second detection subassembly is connected in support pole, and is electrically connected with solar cell panel, and second detection subassembly is used for detecting the output power of solar cell panel. Third detection subassembly is connected in solar cell panel, and third detection subassembly is used for detecting the multiple sets of data of solar cell panel. Data acquisition instrument is connected in support pole, and first detection subassembly, second detection subassembly and third detection subassembly all are in communication connection with data acquisition instrument, to store the data of acquisition in data acquisition instrument. First detection subassembly, second detection subassembly, third detection subassembly and data acquisition instrument all are installed on the support, and through moving the position of support, can make first detection subassembly, second detection subassembly, third detection subassembly and data acquisition instrument synchronous realization the movement of position, to adjust the position of photoelectric conversion efficiency measuring device according to the outdoor climate and the scene state flexibly. When the photoelectric conversion efficiency measuring device is transported, only needs to pack and fixes well in whole the support, need not to pack and fix separately multiple detection subassemblies, to facilitate the storage and carrying of photoelectric conversion efficiency measuring device whole. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structure schematic diagram of the photoelectric conversion efficiency measuring device provided by the utility model embodiment.

[0025] In the drawing:

[0026] 1, support, 11, support pole, 12, support foot, 2, first detection subassembly, 21, infrared instrument, 22, irradiance sensor, 23, ambient temperature sensor, 24, wind speed sensor, 3, second detection subassembly, 4, third detection subassembly, 5, data acquisition instrument, 6, connecting frame, 61, connecting rod. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0028] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0031] As Figure 1As shown, the embodiment provides a photoelectric conversion efficiency measuring device for measuring the photoelectric conversion efficiency of a solar panel, which comprises a support 1, a first detection assembly 2, a second detection assembly 3, a third detection assembly 4 and a data acquisition instrument 5. The support 1 comprises a support rod 11 and a support foot 12, the support rod 11 is connected to the support foot 12, and the support foot 12 is used to support the support rod 11. The first detection assembly 2 is connected to the support rod 11, and is used to detect a plurality of groups of data of the natural environment, such as temperature, humidity, wind speed and light intensity in the natural environment. The second detection assembly 3 is connected to the support rod 11 and is electrically connected to the solar panel, and is used to detect the output power of the solar panel. The third detection assembly 4 is connected to the solar panel, and is used to detect a plurality of groups of data of the solar panel, such as the temperature and the inclination angle of the solar panel. The data acquisition instrument 5 is connected to the support rod 11, and the first detection assembly 2, the second detection assembly 3 and the third detection assembly 4 are all in communication connection with the data acquisition instrument 5, so as to store the collected data in the data acquisition instrument 5.

[0032] The first detection assembly 2, the second detection assembly 3, the third detection assembly 4 and the data acquisition instrument 5 are all installed on the support 1, and by moving the position of the support 1, the first detection assembly 2, the second detection assembly 3, the third detection assembly 4 and the data acquisition instrument 5 can be synchronously moved, so as to flexibly adjust the position of the photoelectric conversion efficiency measuring device according to the outdoor climate and the site state. When the photoelectric conversion efficiency measuring device is transported, only the support 1 needs to be packaged and fixed as a whole, and the multiple detection assemblies do not need to be packaged and fixed separately, so as to facilitate the storage and carrying of the photoelectric conversion efficiency measuring device as a whole.

[0033] Specifically, the support rod 11 and the support foot 12 are detachably connected, and in the embodiment, external threads are arranged on the support rod 11, and internal threads are arranged on the support foot 12, and the support rod 11 and the support foot 12 are detachably connected through the threads. The second detection assembly 3 comprises a current sensor and a voltage sensor, the current sensor and the voltage sensor are connected to the solar panel through an inverter, and can measure the output power of the solar panel under different climate states based on Ohm's law. The third detection assembly 4 comprises an angle measuring instrument and a thermometer, wherein the angle measuring instrument is a high-precision digital electronic angle measuring instrument to display the horizontal inclination angle of the solar panel, and the thermometer is a patch type thermometer which is pasted on the back of the solar panel to measure the temperature of the solar panel in real time.

[0034] The first detection assembly 2, the second detection assembly 3 and the third detection assembly 4 are all electrically connected with the data acquisition instrument 5, and signals are transmitted to the data acquisition instrument 5 through wires, and the wires have good signal strength, so that the data of the first detection assembly 2, the second detection assembly 3 and the third detection assembly 4 can be stably transmitted to the data acquisition instrument 5. The monitoring data is stored on the data acquisition instrument 5 and can be directly exported or uploaded to the Internet of Things cloud platform. The Internet of Things cloud platform has basic functions such as device monitoring and data export, and can monitor and record the photoelectric conversion efficiency of the solar cell panel in real time, compare it with the theoretical photoelectric conversion efficiency of the solar cell panel, and directly calculate the related evaluation indexes of the photovoltaic system such as photovoltaic conversion efficiency, cost-effectiveness ratio and annual power generation, so as to reflect the operation efficiency and performance state of the photovoltaic system in detail. And through the change of the photoelectric conversion efficiency of the solar cell panel, potential problems of the photovoltaic system such as component failure, shadow shielding, pollution and orientation deviation can be revealed.

[0035] Optionally, the photoelectric conversion efficiency measuring device further comprises a connecting frame 6, a plurality of mounting spaces are formed on the connecting frame 6, and the first detection assembly 2, the second detection assembly 3 and the data acquisition instrument 5 are respectively installed in different mounting spaces, so as to ensure that the first detection assembly 2, the second detection assembly 3 and the data acquisition instrument 5 can independently operate without interfering with each other, and the accuracy of the detection data is ensured.

[0036] Specifically, the first detection assembly 2 is installed at one end of the support rod 11 away from the support foot 12, so that the first detection assembly 2 as a whole can be located at a position higher from the ground, so as to better detect a plurality of groups of data of the natural environment. The second detection assembly 3 is installed at one end of the support rod 11 close to the support foot 12, so that the distance between the second detection assembly 3 and the solar cell panel is small, facilitating the connection with the solar cell panel. The data acquisition instrument 5 is also installed at one end of the support rod 11 close to the support foot 12, facilitating the connection with the third detection assembly 4.

[0037] Further, the connecting frame 6 comprises a plurality of connecting rods 61, each connecting rod 61 forms at least one mounting position, the first detection assembly 2 comprises an infrared instrument 21, an irradiance sensor 22, an environmental temperature sensor 23, an environmental humidity sensor and a wind speed sensor 24, and the infrared instrument 21, the irradiance sensor 22, the environmental temperature sensor 23, the environmental humidity sensor and the wind speed sensor 24 are respectively installed on different mounting positions, so as to ensure that the infrared instrument 21, the irradiance sensor 22, the environmental temperature sensor 23, the environmental humidity sensor and the wind speed sensor 24 can independently operate without interfering with each other, and the accuracy of the detection data is ensured.

[0038] Specifically, the infrared instrument 21 and the irradiance sensor 22 are used to measure the intensity of light radiation. The ambient temperature sensor 23 and the ambient humidity sensor are used to measure the temperature and humidity of the environment, respectively. The wind speed sensor 24 is used to measure the wind speed in the environment.

[0039] Further, the ambient temperature sensor 23 and the ambient humidity sensor are installed on one mounting position, further saving installation space.

[0040] Optionally, a plurality of mounting positions are arranged along the circumference of the support rod 11 and are spaced apart from the support rod 11, ensuring that there is a suitable distance between each mounting position, so that the infrared instrument 21, the irradiance sensor 22, the ambient temperature sensor 23, and the wind speed sensor 24 installed on different mounting positions have a suitable distance between them, and do not interfere with each other during detection, ensuring the accuracy of the detection data.

[0041] Specifically, the connecting rods 61 are six in number, four of which are connected in a cross shape at one end of the support rod 11 away from the support foot 12. The end of the connecting rod 61 away from the support rod 11 is provided with a mounting position, and the infrared instrument 21, the irradiance sensor 22, and the wind speed sensor 24 are respectively installed on one mounting position. The ambient temperature sensor 23 and the ambient humidity sensor are installed on one mounting position. The other two connecting rods 61 are connected in a straight line at one end of the support rod 11 close to the support foot 12. The end of the connecting rod 61 away from the support rod 11 is provided with a mounting position. The current sensor and the voltage sensor are installed on the same mounting position, and the data acquisition instrument 5 is installed on the other mounting position.

[0042] Optionally, the first detection assembly 2, the second detection assembly 3, and the data acquisition instrument 5 are detachably connected to the support rod 11, facilitating installation and disassembly.

[0043] Specifically, the infrared instrument 21, the irradiance sensor 22, the ambient temperature sensor 23, the ambient humidity sensor, the wind speed sensor 24, the current sensor, the voltage sensor, and the data acquisition instrument 5 can be detachably connected by screw connection, or by clamping or plug-in connection.

[0044] Optionally, the photoelectric conversion efficiency measuring device further comprises a waterproof box connected to the support rod 11, and the data acquisition instrument 5 is installed in the waterproof box, preventing changes in weather conditions from damaging the data acquisition instrument 5 and enabling it to work under various weather conditions.

[0045] Specifically, the waterproof box is fixed to the mounting position of the connecting rod 61 by screws, and the data acquisition instrument 5 is installed in the waterproof box. The side wall of the waterproof box is provided with a through hole, and the electric wire can pass through and extend into the through hole to connect with the data acquisition instrument 5.

[0046] Optionally, the support leg 12 is a tripod, and the three legs of the tripod are foldable, which is more stable when supported by the tripod and is convenient to carry after being folded.

[0047] Specifically, the tripod includes three legs and a connecting block. The support rod 11 is threadedly connected to the connecting block. One end of each of the three legs is arranged along the circumference of the connecting block and is pivotally connected to the connecting block by a hinge, and the other end of each of the three legs is used to support the tripod on the ground. The middle portions of the three legs are connected to each other by connecting lines of equal length to limit the angles of rotation of the three legs and make the angles of rotation of the three legs the same. In use, the three legs are unfolded and can be supported on the ground, and in transportation, the three legs are folded so that the extension directions of the three legs are the same as the extension direction of the support rod 11, the space occupied by the three legs is reduced, and the tripod is convenient to carry.

[0048] Optionally, two supports 1 are provided, and the infrared instrument 21, the irradiance sensor 22, the ambient temperature sensor 23, the ambient humidity sensor, and the wind speed sensor 24 are connected to the support rods 11 of one support 1 and the other two are connected to the support rods 11 of the other support 1. By arranging the infrared instrument 21, the irradiance sensor 22, the ambient temperature sensor 23, the ambient humidity sensor, and the wind speed sensor 24 on the two supports 1 respectively, each support 1 can be arranged to have a smaller volume, which facilitates the movement of each support 1 and the reduction of the space occupied by each support 1 when packed, thereby facilitating the transportation of the support 1.

[0049] Specifically, two data acquisition instruments 5 are provided and are installed on the two supports 1 respectively. The infrared instrument 21, the irradiance sensor 22, and the wind speed sensor 24 are installed on one support 1 and are in communication connection with the corresponding data acquisition instrument 5. The ambient temperature sensor 23, the ambient humidity sensor, the current sensor, and the voltage sensor are installed on the other support 1 and are in communication connection with the corresponding data acquisition instrument 5.

[0050] Optionally, the photoelectric conversion efficiency measuring device further includes a thermal imager for detecting the temperature distribution of the surface of the solar cell panel, and the thermal imager is in communication connection with the data acquisition instrument 5.

[0051] Specifically, the thermal imager is arranged in front of the solar cell panel so that the thermal imager can collect all the panel positions of the solar cell panel. The thermal imager is connected to the data acquisition instrument 5 by wires. The thermal imager can display the temperature distribution of the surface of the solar cell panel in the form of an image, and the monitoring data is synchronously stored on the data acquisition instrument 5. The working state and thermal efficiency of the solar cell panel can be analyzed, abnormal areas such as hot spots and cold spots can be found, and the performance of the solar cell panel can be evaluated, so as to comprehensively evaluate the performance and quality of the photovoltaic system.

[0052] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A photoelectric conversion efficiency measuring device for measuring the photoelectric conversion efficiency of a solar panel, characterized in that, include: A support (1) includes a support rod (11) and a support foot (12), wherein the support rod (11) is connected to the support foot (12); The first detection component (2) is connected to the support rod (11) and is used to detect multiple sets of data of the natural environment. The second detection component (3) is connected to the support rod (11) and electrically connected to the solar panel. The second detection component (3) is used to detect the output power of the solar panel. A third detection component (4) is connected to the solar panel and is used to detect multiple sets of data from the solar panel. The data acquisition device (5) is connected to the support rod (11), and the first detection component (2), the second detection component (3) and the third detection component (4) are all communicatively connected to the data acquisition device (5).

2. The photoelectric conversion efficiency measuring device according to claim 1, characterized in that, The photoelectric conversion efficiency measuring device also includes a connecting frame (6), on which multiple installation spaces are formed, and the first detection component (2), the second detection component (3) and the data acquisition instrument (5) are respectively installed in different installation spaces.

3. The photoelectric conversion efficiency measuring device according to claim 2, characterized in that, The connecting frame (6) includes a plurality of connecting rods (61), each connecting rod (61) forming at least one mounting position. The first detection component (2) includes an infrared meter (21), an irradiance sensor (22), an ambient temperature sensor (23), an ambient humidity sensor, and a wind speed sensor (24). The infrared meter (21), the irradiance sensor (22), the ambient temperature sensor (23), the ambient humidity sensor, and the wind speed sensor (24) are respectively mounted on different mounting positions.

4. The photoelectric conversion efficiency measuring device according to claim 3, characterized in that, The plurality of mounting positions are arranged circumferentially around the support rod (11) and are spaced apart from the support rod (11).

5. The photoelectric conversion efficiency measuring device according to claim 3, characterized in that, The ambient temperature sensor (23) and the ambient humidity sensor are mounted on one of the mounting positions.

6. The photoelectric conversion efficiency measuring device according to claim 3, characterized in that, Two brackets (1) are provided: an infrared meter (21), an irradiance sensor (22), an ambient temperature sensor (23), an ambient humidity sensor, and a wind speed sensor (24). Three of these are connected to the bracket rod (11) of one bracket (1), and the other two are connected to the bracket rod (11) of the other bracket (1).

7. The photoelectric conversion efficiency measuring device according to any one of claims 1-6, characterized in that, The support leg (12) is a tripod, and the three legs of the tripod are foldable.

8. The photoelectric conversion efficiency measuring device according to any one of claims 1-6, characterized in that, The photoelectric conversion efficiency measuring device also includes a waterproof box, which is connected to the support rod (11), and the data acquisition instrument (5) is installed inside the waterproof box.

9. The photoelectric conversion efficiency measuring device according to any one of claims 1-6, characterized in that, The first detection component (2), the second detection component (3) and the data acquisition instrument (5) are all detachably connected to the support rod (11).

10. The photoelectric conversion efficiency measuring device according to any one of claims 1-6, characterized in that, The photoelectric conversion efficiency measuring device also includes a thermal imager for detecting the temperature distribution on the surface of the solar panel, and the thermal imager is communicatively connected to the data acquisition instrument (5).

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