Photovoltaic photo-thermal integrated assembly test environment simulation device and detection equipment thereof

Abstract

The invention discloses a photovoltaic photo-thermal integrated assembly test environment simulation device and detection equipment thereof, the device comprises a first support and a second support which are oppositely arranged, the second support is provided with a PV / T assembly to be detected, and the first support is provided with a light source irradiating towards the PV / T assembly; a light-transmitting part is arranged in the irradiation direction of the light source, an air channel is formed in the light-transmitting part, and air in the air channel circulates in a one-way mode, so that background infrared heat radiation is reduced, the authenticity of experimental data is improved, and the real sunlight irradiation working condition is simulated in the light source irradiation process; besides, a closed cover is arranged on the second support corresponding to the periphery of the PV / T assembly to form a relatively closed test space, the closed cover is provided with a light-transmitting opening for accommodating the light-transmitting part, and air in the closed cover also flows and circulates along the surface of the assembly in a one-way manner; meanwhile, a humidifying module and a heating module are arranged on an air flowing path of the closed cover so as to control the humidity and the temperature of air flowing through the PV / T assembly, and temperature and humidity environments under different working conditions can be tested by the assembly.

Description

Technical Field

[0001] This invention relates to the field of testing equipment for integrated photovoltaic and solar thermal modules, and particularly to a testing equipment for integrated photovoltaic and solar thermal modules. Background Technology

[0002] A photovoltaic-thermal integrated module is a non-separable combined component that can simultaneously achieve both photovoltaic power generation and photothermal conversion.

[0003] According to the currently published "Technical Specification for Photovoltaic and Solar Thermal Integrated Modules", it is necessary to test the photovoltaic efficiency under thermal steady state and the solar thermal performance under electrical output state in order to measure the performance of the module.

[0004] Among them, the photovoltaic efficiency under thermal steady state refers to the power generation efficiency of the module when it reaches thermal steady state under given conditions of solar irradiance, ambient temperature, wind speed, and inlet temperature and flow rate of heat exchange medium; the peak photothermal efficiency under electrical output state refers to the photothermal conversion efficiency of the module when the total solar irradiance on the module's light-receiving surface is 1000W / m2 and the temperature difference between the average temperature of the heat exchange medium and the ambient air temperature is 0℃.

[0005] To ensure performance data, it is necessary to simulate the outdoor working environment of the components, that is, to control the experimental environment to meet the testing requirements.

[0006] Currently, most photovoltaic performance testing equipment is conducted in laboratories or experimental chambers, and uses transient testing methods (testing the voltage and current output of photovoltaic modules by simulating the instantaneous lighting of a light source). At the same time, considering that photovoltaic / photothermal integrated module equipment is relatively large and it is necessary to test the light-to-heat conversion performance generated by sunlight, directly placing the module to be tested and the testing equipment in a relatively closed laboratory and maintaining a certain ambient temperature only through air conditioning or other air heating cannot achieve a stable working environment, that is, the ambient temperature, wind speed, etc. cannot be effectively controlled. Summary of the Invention

[0007] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a photovoltaic / thermal integrated module testing environment simulation device, which can accurately simulate the working environment of PV / T modules, ensuring the accuracy and objectivity of subsequent test data.

[0008] The technical solution of the present invention is as follows:

[0009] A photovoltaic-thermal integrated module testing environment simulation device includes:

[0010] Support bracket, used to position and install the light source and the component under test;

[0011] The light-transmitting element is positioned in the radiation path of the light source, and a relatively sealed air channel is provided in the light-transmitting element, with air circulating in one direction within the air channel;

[0012] A sealed enclosure is set around the component under test to form a relatively sealed test space. The sealed enclosure is provided with a light-transmitting opening that fits the light-transmitting element, and the air inside the sealed enclosure also flows and circulates unidirectionally along the surface of the component.

[0013] as well as,

[0014] The humidification module and heating module are installed in the airflow path of the sealed enclosure to control the humidity and temperature of the air flowing through the PV / T module.

[0015] Furthermore, the support structure includes a first support and a second support arranged opposite to each other. The PV / T module to be tested is mounted on the second support, and the light source is mounted on the first support and shines on the PV / T module.

[0016] Furthermore, the light-transmitting element is installed on the first bracket.

[0017] Furthermore, a monitoring probe assembly is installed at the air outlet of the sealed enclosure to monitor parameters such as temperature and wind speed above the assembly.

[0018] Furthermore, the light-transmitting component includes a frame and several light-transmitting materials. The frame is provided with grooves for assembling the light-transmitting materials, and air channels are provided between adjacent light-transmitting materials.

[0019] Furthermore, a transition frame is installed on the frame, and the transition frame is equipped with an assembly slot for light-transmitting material.

[0020] Furthermore, a first air duct is sealed to both ends of the light-transmitting element on the first bracket via a flexible connection, and a first fan is installed on the first air duct.

[0021] Furthermore, the enclosure includes a cover on one side of the component and side plates on the other two sides of the component to form a relatively sealed testing environment.

[0022] Furthermore, a second air duct is connected to the end of the cover away from the component, and a second fan is installed on the second air duct for circulating air.

[0023] Furthermore, the air inlet end of the second air duct is equipped with a humidification section, which is specifically configured as a pipe connected to the outlet of the humidifier.

[0024] Furthermore, at least one heating element is installed inside the second air duct.

[0025] Furthermore, a temperature control and heat exchange device is installed at the outlet end of the second air duct.

[0026] Furthermore, the first and second supports are tilted to simulate the condition of receiving sunlight radiation when the component is installed at an angle. The first support is slidably mounted on the vertical support, and / or the second support is slidably mounted on the horizontal support. The tilt angle of the first and / or second supports is adjustable.

[0027] A testing device for a photovoltaic-thermal integrated module, comprising the aforementioned environmental simulation device, and further comprising:

[0028] The constant temperature system is used to provide a medium with a certain temperature and flow rate to the PV / T module, and temperature and flow sensors are installed on its inlet and outlet pipelines;

[0029] The PV / T output module is used to connect to the power output terminal of the module, which includes a photovoltaic inverter for subsequent grid connection and measurement of relevant performance parameters.

[0030] The beneficial effects of this invention are as follows: by setting a relatively sealed air channel in the light-transmitting component, the air in the air channel circulates in one direction; at the same time, a sealed cover is set around the PV / T component, which also forms a channel for one-way air circulation, and is supplemented with humidification and heating, so as to reduce background radiation during the radiation process of the light source, improve the authenticity of experimental data, and simulate real irradiation conditions. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 The diagram shows the structural principle of the photovoltaic-thermal integrated module testing equipment proposed in this invention (related supports are omitted).

[0033] Figure 2 This is a cross-sectional structural diagram of the light-transmitting component;

[0034] Figure 3 A schematic diagram illustrating the tilting configuration of the equipment;

[0035] Figure 4 for Figure 3 Schematic diagram of the central vertical support;

[0036] Figure 5 This is a schematic diagram of the second adjustable support.

[0037] Figure 6 This is a schematic diagram of the first adjustable support.

[0038] In the diagram: 0-PV / T assembly; 1-First support; 2-Second support; 3-Light source; 4-Light-transmitting component; 41-Frame; 42-Transition frame; 43-Transparent glass; 44-Air channel; 5-First air duct; 51-First fan; 6-Cover; 61-Side panel; 7-Second air duct; 71-Humidification section; 72-Second fan; 73-First heating section; 74-Second heating section; 8-Temperature control heat exchange device; 9-Monitoring probe assembly;

[0039] 11-Vertical support; 111-Slider; 112-Traction rope; 12-Horizontal support; 121-Support; 122-Push rod. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0042] Reference Figures 1-2 A photovoltaic / thermal integrated module testing environment simulation device includes a first support 1 and a second support 2 arranged opposite to each other. A PV / T module 0 to be tested is mounted on the second support 2, and a light source 3 is mounted on the first support 1, irradiating the PV / T module 0. A light-transmitting element 4 is arranged in the irradiation direction of the light source 3, and is mounted on the first support 1. A (relatively sealed) air channel 44 is provided in the light-transmitting element 4, and the air in the air channel 44 circulates unidirectionally to reduce background radiation during the light source radiation process. (According to the Stefan-Boltzmann law, the radiative heat transfer generated by the sky environment depends on the temperature difference between the effective sky temperature and the surface of the PV / T module. The effective sky temperature is not only related to the air temperature but also...) This is related to factors such as the water vapor content in the atmosphere. In outdoor tests, the effective sky temperature is generally lower than the ambient temperature. However, when using a solar simulator for indoor tests, the metal halide lamp emits light and heat under stable power conditions. The simulator components, such as the glass filter lampshade and lamp box connected to it, heat up under thermal radiation, further increasing the ambient temperature. This results in the indoor "sky" effective temperature being significantly higher than the natural sky effective temperature, thus affecting the consistency of the test results. Therefore, to maintain as consistent indoor and outdoor test conditions as possible and improve the accuracy of indoor test results, it is necessary to create an "artificial cold sky" by adjusting the air temperature, thereby improving the authenticity of the experimental data and simulating real sky irradiation conditions.

[0043] In addition, a sealed cover is set on the second bracket 2 corresponding to the periphery of the PV / T module 0 to form a relatively sealed test space. The sealed cover is provided with a light-transmitting opening to accommodate the light-transmitting element 4, and the air inside the sealed cover also flows and circulates unidirectionally along the surface of the module. At the same time, a humidification module and a heating module are set on the air flow path of the sealed cover to control the humidity and temperature of the air flowing through the PV / T module, so as to realize the temperature and humidity environment of the module under different working conditions during the test. A monitoring probe assembly 9 is set at the air outlet of the sealed cover to monitor parameters such as temperature, wind speed, and humidity above the module.

[0044] In this specific implementation,

[0045] like Figure 1 and Figure 2 The light-transmitting component 4 includes a frame 41 and several light-transmitting materials. In this example, the light-transmitting material is transparent glass 43 (it can also be a light-transmitting material such as quartz glass). The frame 41 is provided with a groove for assembling the transparent glass 43 and is further sealed with glue. An air channel 44 is provided between adjacent light-transmitting glass 43. At the same time, in order to avoid the glass span being too large, a transition frame 42 is installed on the frame 41 to reduce the area of ​​a single glass.

[0046] Meanwhile, a first air duct 5 is sealed to both ends of the light-transmitting element 4 on the first bracket 1 via a flexible connection. A first fan 51 is installed on the first air duct 5 for circulating air. The first fan 51 can be installed on the first bracket 1 via a mounting bracket, or a sensor can be further installed to monitor the wind speed.

[0047] like Figure 1 The sealed enclosure includes a cover body 6 disposed on both sides of the component and side plates 61 disposed on the other two sides of the component to form a relatively sealed test environment. The end of the cover body 6 away from the component is connected to a second air duct 7 via a flexible connection. A second fan 72 is installed on the second air duct 7 for circulating air. A humidification section 71 is provided at the air inlet end of the second air duct 7, which is specifically configured as a pipe connected to the outlet of the humidifier. At least one set of heating sections is provided in the second air duct 7. The heating section can be a duct heater. In this embodiment, it includes a first heating section 73 and a second heating section 74, which are respectively disposed at the inlet and outlet ends of the fan. In addition, a temperature control heat exchange device 8 is provided at the outlet end of the second air duct 7. The temperature control heat exchange device 8 can be a grid-type gas heat exchanger. A flow stabilizer is provided at the outlet. The inlet and outlet ends of the heat exchange tubes on the heat exchanger are connected to a fluid temperature control system for heat exchange, which is used to control the temperature and airflow at the outlet (maintaining laminar flow).

[0048] During testing, the light-transmitting element 4 is basically embedded in the opening of the sealed cover. The distance between the light-transmitting element 4 and the PV / T module under test is controlled to adjust the irradiance. The air is circulated through two sets of fans, and environmental parameters are monitored through relevant detection probes. Once the experimental conditions are met, the test can begin.

[0049] This application also discloses a testing device for a photovoltaic-thermal integrated module, which includes the aforementioned environmental simulation device, and further includes:

[0050] The constant temperature system is a commercially available conventional fluid temperature control system used to provide a medium with a certain temperature and flow rate to the PV / T module, and temperature and flow sensors are installed on its inlet and outlet pipelines;

[0051] The PV / T output module is used to connect to the power output terminal of the module, which includes a photovoltaic inverter for subsequent grid connection and measurement of relevant performance parameters.

[0052] The testing methods refer to relevant standards:

[0053] The photovoltaic efficiency under thermal steady-state conditions was tested in an indoor simulated solar environment, with the ambient temperature controlled at 25℃±2℃, solar irradiance on the module surface at 1000W / m2±200W / m2, and wind speed less than 1m / s. The test procedure was as follows: the modules were installed at the manufacturer's specified minimum tilt angle or a 30° tilt angle. After the test conditions were met, based on the total area of ​​the modules, a medium was introduced into the modules at a rate of 0.01kg / (s·m2) or the manufacturer's specified flow rate at temperatures of 10℃±1℃, 25℃±1℃, 40℃±1℃, 55℃±1℃, and 70℃±1℃ (or the manufacturer's specified maximum operating temperature of the modules), respectively. The medium temperature te at the module outlet was recorded. After the change in the medium temperature at the module outlet was less than 1℃, the maximum output power Pmax of the modules was measured according to IEC 60904-1:2020.

[0054] For the photothermal performance under electrical output conditions, an inverter with a module connection efficiency of not less than 90% and equipped with MPPT function, connected to a power grid with a voltage of 220V±22V and a frequency of 50HZ±0.5Hz, shall undergo thermal performance testing according to the test methods given in GB / T 4271. If a single module does not meet the inverter input requirements, the number of modules may be increased, and the added modules and the module under test shall be under the same environmental conditions.

[0055] like Figure 3 To test the performance of the components under more realistic usage conditions, the first bracket 1 and the second bracket 2 were tilted to simulate the condition of the components being exposed to sunlight when installed at an angle.

[0056] The first bracket 1 is slidably mounted on the vertical bracket 11, and the second bracket 2 is slidably mounted on the horizontal bracket 12.

[0057] Specifically, such as Figures 3-4A guide rail is installed on the vertical support 11, and a slider 111 is slidably connected on the guide rail. The first support 1 is connected to the slider 111, and a screw drive assembly is set on the vertical support 11 to drive the slider 111 to slide up and down. Similarly, the second support 2 is slidably set on the horizontal support 12 by a slider, or a hydraulic push rod or screw assembly can be used to drive the second support 2 to slide horizontally.

[0058] The tilt angles of the first support 1 and the second support 2 are adjustable.

[0059] like Figure 5 A support 121 is rotatably connected to the bottom of the second bracket 2, and a push rod 122 is connected between the support 121 and the second bracket 2. The cylinder end of the (hydraulic) push rod 122 is rotatably connected to the support 121, and the movable rod end of the push rod 122 is rotatably connected to the second bracket 2. By controlling the operation of the push rod 122, the opening degree of the second bracket 2 is controlled, thereby achieving the purpose of adjusting the angle.

[0060] like Figure 6 The first bracket 1 is rotatably connected to the slider 111 at one end, and a sprocket is installed on the top of the vertical bracket 11 for connecting the traction rope 112. One end of the traction rope 122 is fixedly connected to the first bracket 1, and the other end is connected to the traction winding motor.

[0061] In this application, the structures and connections not described in detail are all prior art, and their structures and principles are well known, so they will not be described in detail here.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A photovoltaic-thermal integrated module testing environment simulation device, characterized in that: include Support bracket, used to position and install the light source and the component under test; The light-transmitting element is positioned in the radiation path of the light source, and a relatively sealed air channel is provided in the light-transmitting element, with air circulating in one direction within the air channel; A sealed enclosure is set around the component under test to form a relatively sealed test space. The sealed enclosure is provided with a light-transmitting opening that fits the light-transmitting element, and the air inside the sealed enclosure also flows and circulates unidirectionally along the surface of the component. as well as, The humidification module and heating module are located in the airflow path of the sealed enclosure to control the humidity and temperature of the air flowing through the PV / T module.

2. The photovoltaic-thermal integrated module test environment simulation device according to claim 1, characterized in that: The support structure includes a first support and a second support arranged opposite to each other; the PV / T module to be tested is mounted on the second support; the light source is mounted on the first support and shines on the PV / T module; and the light-transmitting element is mounted on the first support.

3. The photovoltaic-thermal integrated module test environment simulation device according to claim 2, characterized in that: The light-transmitting component includes a frame and several light-transmitting materials, with air channels provided between adjacent layers of light-transmitting materials.

4. The photovoltaic-thermal integrated module test environment simulation device according to claim 3, characterized in that: The first support has a first air duct sealed at both ends of the light-transmitting element, and a first fan is installed on the first air duct.

5. The photovoltaic-thermal integrated module test environment simulation device according to claim 1, characterized in that: A monitoring probe assembly is installed at the air outlet of the sealed enclosure to monitor the temperature, wind speed, and humidity parameters above the assembly.

6. The photovoltaic-thermal integrated module test environment simulation device according to claim 5, characterized in that: The enclosure includes a cover on one side of the component and side plates on the other two sides of the component to form a relatively sealed test environment.

7. The photovoltaic-thermal integrated module test environment simulation device according to claim 1, characterized in that: A second air duct is connected to the end of the cover away from the component, and a second fan is installed on the second air duct for circulating air; a humidifying part is provided at the air inlet end of the second air duct; at least one heating part is provided inside the second air duct.

8. The photovoltaic-thermal integrated module test environment simulation device according to claim 1, characterized in that: The outlet end of the second air duct is equipped with a temperature control and heat exchange device.

9. The photovoltaic-thermal integrated module test environment simulation device according to claim 1, characterized in that: The first and second supports are tilted, with the first support sliding on a vertical support and / or the second support sliding on a horizontal support. The tilt angle of the first and / or second supports is adjustable.

10. A testing device for a photovoltaic-thermal integrated module, comprising a photovoltaic-thermal integrated module testing environment simulation device as described in any one of claims 1-9, characterized in that: Also includes The constant temperature system is used to provide a medium with a certain temperature and flow rate to the PV / T module, and temperature and flow sensors are installed on its inlet and outlet pipelines; The PV / T output module is used to connect to the power output terminal of the module, which includes a photovoltaic inverter for subsequent grid connection and measurement of relevant performance parameters.

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