Solar simulator

Abstract

The invention discloses a solar simulator, which is characterized in that a plurality of LED lamp panels are arranged on a first surface of a reference station around an integrated sensor, and a control module is arranged on the reference station to control a power supply module to supply power to the LED lamp panels and control operation parameters of the LED lamp panels so as to realize sunlight simulation. The LED lamp panels are coaxially and fixedly connected with pins arranged on the reference table through mounting holes, errors caused by repeated mounting are reduced, the position setting accuracy of the LED lamp panels is improved, the LED lamp panels are annularly arranged in a specific distribution mode, uniform light intensity of a test area is ensured through the irradiation superposition technology, the integrated sensor monitors the light intensity in real time and feeds back the light intensity to the control module, and the control module is connected with the LED lamp panels. The control module dynamically adjusts the power of the lamp panel through the power supply module so as to optimize the irradiation uniformity reference station, and the problems of poor irradiation uniformity, poor installation repeatability of the lamp panel and the like are solved through ultrahigh-precision flatness and stable physical characteristics of the irradiation uniformity reference station.

Description

Technical Field

[0001] The invention relates to the technical field of solar photovoltaic material detection equipment, in particular to a solar simulator. Background Art

[0002] As one of the key technologies of renewable energy, photovoltaic technology is developing rapidly, and the requirements for related testing equipment are becoming higher and higher. As an indispensable device in photovoltaic material testing, the main function of solar simulator is to simulate the spectral characteristics of sunlight and provide a stable and controllable irradiation environment for the performance testing of photovoltaic materials.

[0003] The solar simulator in the prior art mainly uses LED modules as light sources to simulate the spectral characteristics of sunlight, and is a high-precision research and development and production equipment.

[0004] The Chinese patent application with application number 201110206867.9 discloses an LED solar simulator, which comprises at least a modular LED light source system, a controller, a movable spectrum detection system and a sample stage. The modular design concept of the invention enables the light source area or power to be changed by simply increasing or decreasing the number of LED modules, providing a simple and effective method for the realization of a large-area solar simulator, while enhancing the control capability of the luminous characteristics of the solar simulator.

[0005] Although LED light sources have replaced traditional xenon lamps and other gas light sources and iodine tungsten lamp light sources, their optical hybrid systems, spectrum correction systems and concentrators still use traditional optical devices. However, these traditional optical devices are relatively large in size, making it difficult to achieve large-area testing when simulating sunlight, and the utilization rate of light energy needs to be improved, which has technical defects. Existing solar simulators mostly use LED light panels as light sources, but there are problems such as poor irradiation uniformity and poor repeatability of light panel installation, which limits the application of solar simulators in the field of photovoltaic device testing. Summary of the invention

[0006] The purpose of the present invention is to provide a solar simulator to solve the problems of poor irradiation uniformity and poor repeatability of lamp panel installation.

[0007] To solve the above technical problems, an embodiment of the present invention provides a solar simulator, including a reference platform, an LED light board, a control module, a power module and an integrated sensor, wherein the integrated sensor is arranged on the first surface of the reference platform, and a plurality of LED light boards are arranged on the first surface of the reference platform around the integrated sensor, the control module is arranged on the reference platform, and is used to control the power module to supply power to the LED light board and control the operating parameters of the LED light board to realize sunlight simulation, the LED light board is provided with a mounting hole, and is coaxially fixedly connected with a pin arranged on the reference platform through the mounting hole, the integrated sensor is used to detect the illumination parameters of a plurality of the LED light boards at a location, the control module adjusts the output power of the LED light board according to the illumination parameters fed back by the integrated sensor, so as to improve the irradiation uniformity, and also includes a fastener arranged on the side of the LED light board away from the reference platform, the fastener and the LED light board are connected to the reference platform through a plurality of the mounting holes. The base is connected by a pin clamp or bolt, the contact surface area between the fastener and the LED light board is greater than or equal to one third of the area of ​​the surface of the LED light board facing the fastener, the offset error between the LED light board and the mounting hole is less than or equal to 0.05 mm, and also includes a PCB circuit board arranged on the back of the base, the control module is arranged on the back of the base, the control module is connected to the PCB circuit board, the PCB circuit board is connected to the LED light board, and is used to power the LED light board, the fastener is a clamp buckle plate, the left end of the clamp buckle plate is provided with a positive power supply terminal, the right end of the clamp buckle plate is provided with a negative power supply terminal, the positive pole of the LED light board is arranged on the positive power supply terminal, and the negative pole of the LED light board is arranged on the negative power supply terminal, the LED light board is crimped to the electrode of the LED light board on the PCB circuit board through the clamp buckle plate and the electrode fixing structure, and the electrode fixing structure is a base copper column structure or a spring copper sheet structure.

[0008] Among them, it also includes a power supply module connected to the PCB circuit board and the control module, and the power supply module includes at least one of a mains power conversion module and a battery module. The mains power conversion module is used to convert the mains power into the working voltage of the PCB circuit board, and the battery module is used to charge from the mains power, store electric energy, and supply power to the PCB circuit board.

[0009] Among them, it also includes multiple expansion boards arranged in the control module, each of the expansion boards is connected to the LED light board in a one-to-one correspondence, and a controllable resistor is arranged in the expansion board. The control module controls the output resistance of the controllable resistor through the expansion board to control the output power of the corresponding LED light board.

[0010] It also includes a sensor mounting hole arranged on the reference platform for mounting the integrated sensor and a height adjustment device arranged on the sensor mounting hole, wherein the height adjustment device is used to adjust the height difference of the integrated sensor relative to the surface of the reference platform.

[0011] Among them, it also includes a neural network learning module connected to the control module, which is used to obtain the historical operation data of the LED light board and the historical data of the integrated sensor, establish and optimize the model, and output the control data of the LED light board according to the current radiation data of the integrated sensor.

[0012] Wherein, it also includes a sensor calibration module connected to the integrated sensor, which is used to calibrate the integrated sensor.

[0013] Among them, the center connecting lines of the multiple LED light boards form a regular polygon or a circle, the integrated sensor is located at the center of the regular polygon or the circle, the number of LED chips of the multiple LED light boards is equal, and the models of the LED chips of the multiple LED light boards are the same or different.

[0014] The solar simulator provided in the embodiment of the present invention has the following advantages compared with the prior art:

[0015] The solar simulator provided by the embodiment of the present invention realizes sunlight simulation by arranging multiple LED light panels around an integrated sensor on the first surface of a base platform, and a control module is arranged on the base platform to control the power supply module to power the LED light panels and control the operating parameters of the LED light panels. The LED light panels are coaxially fixedly connected to the pins arranged on the base platform through mounting holes, so as to reduce the error of repeated installation and improve the accuracy of position setting of the LED light panels. The LED light panels are arranged in a ring with a specific arrangement and distribution, and the light intensity in the test area is ensured to be uniform through the irradiation superposition technology. The integrated sensor monitors the light intensity in real time and feeds back to the control module. The control module dynamically adjusts the power of the light panels through the power supply module to optimize the irradiation uniformity. The base platform solves the problems of poor irradiation uniformity and poor repeatability of light panel installation with its ultra-high precision flatness and stable physical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1A schematic structural diagram of a single lamp board of an embodiment of a solar simulator provided by the present invention;

[0018] Figure 2 A schematic diagram of the arrangement structure of the light panels of an embodiment of the solar simulator provided by the present invention;

[0019] Figure 3 A schematic structural diagram of an embodiment of a solar simulator provided by the present invention;

[0020] Among them, 1-LED light board, 2-pin, 3-fixture buckle plate, 4-integrated sensor, 5-control module, 6-power module, 7-base platform, 11-mounting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to Figure 1-Figure 3 , Figure 1 A schematic structural diagram of a single lamp board of an embodiment of a solar simulator provided by the present invention; Figure 2 A schematic diagram of the arrangement structure of the light panels of an embodiment of the solar simulator provided by the present invention; Figure 3 A schematic structural diagram of an embodiment of a solar simulator provided by the present invention.

[0023] In a specific embodiment, the solar simulator includes a reference platform 7, an LED light board 1, a control module 5, a power module 6 and an integrated sensor 4, wherein the integrated sensor 4 is arranged on the first surface of the reference platform 7, and a plurality of LED light boards 1 are arranged around the integrated sensor 4 on the first surface of the reference platform 7, the control module 5 is arranged on the reference platform 7, and is used to control the power module 6 to supply power to the LED light board 1 and control the operating parameters of the LED light board 1 to realize sunlight simulation, the LED light board 1 is provided with a mounting hole 11, and is coaxially fixedly connected with a pin 2 arranged on the reference platform 7 through the mounting hole 11, the integrated sensor 4 is used to detect the illumination parameters of the plurality of LED light boards 1 at a location, and the control module 5 adjusts the output power of the LED light board 1 according to the illumination parameters fed back by the integrated sensor 4 to improve the irradiation uniformity.

[0024] A plurality of LED light panels 1 are arranged on the first surface of a reference platform 7 around an integrated sensor 4, a control module 5 is arranged on the reference platform 7 to control a power module 6 to supply power to the LED light panel 1 and control the operating parameters of the LED light panel 1 to realize sunlight simulation, and the LED light panel 1 is coaxially fixedly connected with a pin 2 arranged on the reference platform 7 through a mounting hole 11, so as to reduce the error of repeated installation and improve the position setting accuracy of the LED light panel 1. The LED light panel 1 is arranged in a ring with a specific arrangement and distribution, and the light intensity in the test area is ensured to be uniform through the irradiation superposition technology. The integrated sensor 4 monitors the light intensity in real time and feeds back to the control module 5. The control module 5 dynamically adjusts the light panel power through the power module 6 to optimize the irradiation uniformity. The reference platform 7 solves the problems of poor irradiation uniformity and poor repeatability of light panel installation with its ultra-high precision flatness and stable physical properties.

[0025] In order to further improve the installation convenience and improve the installation accuracy of the LED light board 1, in one embodiment, the solar simulator also includes a fastener arranged on the side of the LED light board 1 away from the reference platform 7, and the fastener and the LED light board 1 are clamped or bolted with the column pin 2 of the reference platform 7 through the multiple mounting holes 11, and the contact surface area between the fastener and the LED light board 1 is greater than or equal to one third of the area of ​​the surface of the LED light board 1 facing the fastener, and the offset error between the LED light board 1 and the mounting hole 11 is less than or equal to 0.05mm.

[0026] By setting fasteners on the side of the LED light board 1 away from the reference platform 7, there is no need to directly set installation components on the LED light board 1 to fix the LED light board 1, so that there is almost no impact on the LED light board 1 during subsequent installation. The use of fasteners for installation can reduce the difficulty of installation and improve installation efficiency.

[0027] In addition, fasteners are used to install the LED light board 1, covering and pressing a large part of the surface area of ​​the LED light board 1, so that there is no installation error caused by bending of the LED light board 1 during the installation process, thereby improving the installation accuracy.

[0028] The material, shape and size of the fasteners are not limited in the present application. The offset error between the LED light board 1 and the mounting hole 11 is not limited in the present application, but a smaller installation error can be achieved, and subsequent repeated installation can be achieved, so that the LED light board 1 can be maintained and replaced in time with almost no error, which greatly reduces the installation repeatability of the device.

[0029] In order to further improve the operational controllability of the device, in one embodiment, the solar simulator also includes a PCB circuit board arranged on the back of the base platform 7, the control module 5 is arranged on the back of the base platform 7, the control module 5 is connected to the PCB circuit board, and the PCB circuit board is connected to the LED light board 1 for powering the LED light board 1.

[0030] By setting a PCB circuit board on the back of the base platform 7, on the one hand, the integration of components can be achieved, and on the other hand, the circuit can be accurately controlled through the PCB circuit board, and the voltage and current output of the LED lamp board 1 can be accurately controlled to achieve accurate control of each brightness in the sunlight simulation, thereby improving the accuracy and efficiency of the simulation, and realizing the simulation of sunlight of multiple brightnesses using one device.

[0031] In addition, setting the PCB circuit board on the back of the base platform 7 can, on the one hand, reduce the occupation of the front space and improve the flexibility and convenience of installing the LED light board 1; on the other hand, the heat generated by the PCB circuit board during operation will not affect the LED light board 1 or will have a smaller impact on the LED light board 1, thereby improving the heat dissipation efficiency.

[0032] In order to further reduce the difficulty of circuit connection and avoid the influence of the existence of fasteners on the connection of electrodes so that the electrodes are installed uniformly, in one embodiment, the fastener is a clamp buckle plate 3, and the left end of the clamp buckle plate 3 is provided with a positive power supply terminal, and the right end of the clamp buckle plate is provided with a negative power supply terminal. The positive pole of the LED light board 1 is provided at the positive power supply terminal, and the negative pole of the LED light board 1 is provided at the negative power supply terminal. The LED light board 1 is crimped onto the PCB circuit board through the clamp buckle plate 3 and the electrode fixing structure, and the electrode fixing structure is a base copper column structure or a spring copper sheet structure.

[0033] Use the clamp plate 3 to press the positive and negative poles of the left and right ends of the LED light board 1 into the power supply terminals for connection. The clamp plate 3 not only provides a stable power connection, but also performs secondary positioning and fixing of the light board through its structure to ensure the stability of the light board during the test.

[0034] The present application includes but is not limited to the above-mentioned electrode installation and connection methods.

[0035] In the present application, it is necessary to simulate sunlight, and there is no limitation on the power supply method. In one embodiment, the solar simulator also includes a power module 6 connected to the PCB circuit board and the control module 5. The power module 6 includes at least one of a mains power conversion module and a battery module. The mains power conversion module is used to convert the mains power into the working voltage of the PCB circuit board, and the battery module is used to charge from the mains power, store electric energy and supply power to the PCB circuit board.

[0036] By setting up a power module 6 and providing stable power supply through a unified power module 6 instead of using AC power directly for power supply, the stability of power supply can be guaranteed, ensuring that the LED lamp board 1 can operate at a specified voltage and current without unstable output caused by AC power fluctuations.

[0037] In order to further achieve precise control of each LED light board 1, and even control of each LED, etc., in one embodiment, the solar simulator also includes a plurality of expansion boards arranged in the control module 5, each of the expansion boards is connected to the LED light board 1 one by one, and a controllable resistor is arranged in the expansion board. The control module 5 controls the output resistance of the controllable resistor through the expansion board, thereby controlling the output power of the corresponding LED light board 1.

[0038] By setting up an expansion board, precise control of the LED light board 1 is achieved, and by setting a controllable resistor on the expansion board, precise control of the output power of the LED light board 1 is achieved.

[0039] The present application does not limit the circuit structure of the expansion board, nor does it limit the structure of its controllable resistor.

[0040] Since the present application requires the use of an integrated sensor 4 for receiving and feeding back light so that the control module 5 can perform precise control, if there is an error in the installation position of the integrated sensor 4, it may not be possible to accurately receive light.

[0041] In order to solve the above technical problems, in one embodiment, the solar simulator also includes a sensor mounting hole 11 arranged on the base platform 7 for mounting the integrated sensor 4 and a height adjustment device arranged on the sensor mounting hole 11, and the height adjustment device is used to adjust the height difference of the integrated sensor 4 relative to the surface of the base platform 7.

[0042] By providing a sensor mounting hole 11 for installing the integrated sensor 4 on the reference platform 7 and providing a height adjustment device, the light receiving function of the LED light board 1 can be realized by adjusting the height or even the angle of the integrated sensor 4.

[0043] The present application does not limit the structure of the height adjustment device and the height adjustment method.

[0044] In order to further improve the automation of adjustment, in one embodiment, the solar simulator also includes a neural network learning module connected to the control module 5, which is used to obtain the historical operation data of the LED light board 1 and the historical data of the integrated sensor 4, establish and optimize the model, and output the control data of the LED light board 1 according to the current radiation data of the integrated sensor 4.

[0045] Through the neural network learning module, the historical operation data of the LED light board 1 and the historical data of the integrated sensor 4 are obtained to establish and optimize the model, and the control data of the LED light board 1 is output according to the current radiation data of the integrated sensor 4, so as to realize automatic adjustment of control parameters and improve control efficiency.

[0046] This application does not limit the learning model of the neural network learning module.

[0047] In order to further improve the accuracy of data detection and feedback, in one embodiment, the solar simulator further includes a sensor calibration module connected to the integrated sensor 4 for calibrating the integrated sensor 4 .

[0048] By providing a sensor calibration module, the integrated sensor 4 can be calibrated regularly or irregularly to improve the accuracy of its data detection.

[0049] The present application does not limit the structure and calibration method of the sensor calibration module.

[0050] The present application does not limit the number and position of the LED light boards 1. In one embodiment, the center lines of the multiple LED light boards 1 form a regular polygon or a circle, the integrated sensor 4 is located at the center of the regular polygon or the circle, the number of LED chips of the multiple LED light boards 1 is equal, and the models of the LED chips of the multiple LED light boards 1 are the same or different.

[0051] The present invention aims to develop a high-precision solar simulator, which improves irradiation uniformity through innovative technology, ensures high-precision repeatability of lamp panel installation, optimizes light source system design, and introduces an intelligent control module 5 to meet the requirements of solar photovoltaic material testing for high accuracy and high reliability, while achieving cost-effectiveness optimization.

[0052] In one embodiment, the solar simulator includes: an LED light board 1, a column pin 2, a fixture plate 3, an integrated sensor 4, a control module 5, a power module 6 and a reference platform 7; the LED light board 1 realizes a solar spectrum simulator through different LED chips, and different LED light boards 1 can have the same spectrum or different spectrums, and a larger dimension of spectrum adjustment can be achieved through light mixing. The LED light board 1 is coaxially positioned with the mounting hole 11 through the column pin 2 to ensure that the offset error is less than 0.05mm after repeated installation; the LED light board 1 is connected to the PCB and powered on for use. The existing PCB is only used for routing and passing current. The LED heat dissipation is close to the base back plate, avoiding the traditional method of directly soldering on the PCB and adding additional thermal resistance.

[0053] The LED light board 1 is connected through the clamp buckle plate 3 and the base copper column / spring copper sheet structure, and the LED electrode is crimped on the lower circuit board, and electrical connection is made on the lower circuit board, which realizes thermal and electrical separation on the one hand; on the other hand, it improves the detachability of the light board.

[0054] The integrated sensor 4 monitors the light intensity of the annular light panel in real time, and feeds back the monitoring results to the control module 5; the control module 5 adjusts the power of the light panel through the power module 6 according to the sensor feedback to improve the irradiation uniformity; the reference table 7 has ultra-high precision flatness and stable physical properties to ensure the stability and accuracy of the sample table. The specific arrangement of the LED light panel 1 significantly improves the irradiation uniformity of the test area. The coordinated work of the integrated sensor 4 and the control module 5 realizes the real-time monitoring and dynamic adjustment of the irradiation uniformity. The power module 6 can accurately respond to the instructions of the control module 5 and fine-tune the power of the LED light panel 1 to maintain the uniformity and stability of the irradiation. The design of the reference table 7 provides a stable and accurate testing platform to ensure the reliability of the test results.

[0055] The installation process is as follows:

[0056] The pins 2 and the mounting holes 11 are used to achieve accurate positioning and repeated installation of the LED light board 1;

[0057] Start the integrated sensor 4 to receive the light intensity distribution data of the light board in real time;

[0058] The monitoring data is fed back to the control module 5, and the control module 5 adjusts the power module 6 according to the data to optimize the power output of the LED light board 1 and ensure the uniformity of the irradiation of the test area.

[0059] The control module 5 has a self-learning function, which can optimize the irradiation adjustment strategy according to historical data, improve the accuracy and efficiency of irradiation control, and regularly calibrate the integrated sensor 4 to ensure the accuracy of irradiation monitoring in long-term operation. The above device can be applied to the detection of various solar photovoltaic materials and can provide a standardized and highly repeatable test environment.

[0060] Among them, the LED lamp board 1 is coaxially positioned with the mounting hole 11 through the pin 2 to ensure that the offset after repeated installation is less than 0.05mm; the clamp buckle plate 3 is used to connect the lamp board electrodes and perform secondary positioning and fixation; the LED lamp board 1 adopts a ring arrangement with a specific arrangement and distribution, and ensures uniform light intensity in the test area through irradiation superposition technology; the integrated sensor 4 monitors the light intensity in real time and feeds back to the control module 5, which dynamically adjusts the lamp board power through the power module 6 to optimize the irradiation uniformity. The reference platform 7 is with its ultra-high precision flatness and stable physical properties.

[0061] Installation and positioning of LED light board: Pass the pin of LED light board through the mounting hole of light board to realize the coaxial positioning between light board and reference platform. Through precision machining, ensure the matching accuracy of pin and mounting hole so that the deviation error of light board is less than 0.5mm during repeated installation.

[0062] Power supply and fixation of the light board: Use the clamp plate to press the positive and negative poles of the left and right ends of the LED light board into the power supply terminals for connection. The clamp plate not only provides a stable power connection, but also fixes the light board for a second time through its structure to ensure the stability of the light board during the test.

[0063] The LED light panels are arranged in a specific way, and the irradiation uniformity of the field is significantly improved by superimposing the irradiation. This arrangement can effectively simulate the irradiation characteristics of sunlight and provide a uniform irradiation environment for photovoltaic materials.

[0064] Real-time monitoring of irradiation uniformity: Integrated sensors are installed around the ring light panel to monitor the light intensity distribution of the ring light panel in real time. The sensor can accurately measure the light intensity of each LED light panel and convert it into an electrical signal and transmit it to the control module.

[0065] Dynamic adjustment of irradiation uniformity: The control module receives monitoring data from the integrated sensor and dynamically adjusts the power of the LED light board through the power module according to the preset irradiation uniformity standard. This adjustment can be fine-tuning or overall adjustment to ensure the irradiation uniformity of the entire test area.

[0066] The design of the reference table takes into account the needs of high precision and stability. Its ultra-high precision flatness and stable physical properties provide a stable and reliable testing platform for the sample, ensuring the consistency and repeatability of the test results.

[0067] The control module has a self-learning function, which can optimize the irradiation adjustment strategy according to historical data to improve the accuracy and efficiency of irradiation control. At the same time, the integrated sensor 4 is calibrated regularly to ensure the accuracy of irradiation monitoring in long-term operation.

[0068] The above-mentioned device can provide a standardized and highly repeatable testing environment. Through actual test verification, it can meet the needs of high-precision testing and provide a reliable tool for the performance evaluation of photovoltaic materials.

[0069] The above device has the following advantages:

[0070] 1. Convenient installation method: The light board does not need to be soldered to the bottom PCB board, which is convenient for quick replacement. This not only greatly improves the convenience of maintenance, but also provides the possibility of separate upgrade of the light source in the future without replacing the entire product, thereby reducing maintenance costs and extending the service life of the product.

[0071] 2. High-precision positioning: The pin and the mounting hole are coaxial to ensure that the offset error of repeated installation of the LED light board is less than 0.05mm, which significantly improves the installation accuracy and repeatability.

[0072] 3. Improved irradiation uniformity: The LED light panel adopts a specific layout distribution, combined with carefully designed light intensity technology, which significantly improves the irradiation uniformity of the test area.

[0073] 4. Real-time monitoring and dynamic adjustment: The integrated sensor monitors the light intensity distribution in real time, and the control module dynamically adjusts the light board power according to the feedback data, achieving precise control of irradiation uniformity.

[0074] 5. Energy control: The control module has a self-learning function and can optimize the irradiation adjustment strategy according to historical data, thereby improving the accuracy and efficiency of irradiation control.

[0075] 6. Wide applicability: It is suitable for the detection of various solar photovoltaic materials and can provide a standardized and highly repeatable testing environment.

[0076] To summarize, the solar simulator provided by the embodiment of the present invention realizes sunlight simulation by arranging multiple LED light panels around an integrated sensor on the first surface of a base platform, and a control module is arranged on the base platform to control the power supply module to power the LED light panels and control the operating parameters of the LED light panels. The LED light panels are coaxially fixedly connected to the pins arranged on the base platform through mounting holes, so as to reduce the errors of repeated installation and improve the accuracy of position setting of the LED light panels. The LED light panels are arranged in a ring with a specific arrangement distribution, and the irradiation superposition technology is used to ensure the uniformity of light intensity in the test area. The integrated sensor monitors the light intensity in real time and feeds back to the control module. The control module dynamically adjusts the power of the light panels through the power supply module to optimize the irradiation uniformity. The base platform solves the problems of poor irradiation uniformity and poor repeatability of light panel installation with its ultra-high precision flatness and stable physical properties.

[0077] The solar simulator provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A solar simulator, characterized in that: It includes a reference platform, an LED light board, a control module, a power supply module and an integrated sensor, wherein the integrated sensor is arranged on the first surface of the reference platform, and a plurality of LED light boards are arranged on the first surface of the reference platform around the integrated sensor, and the control module is arranged on the reference platform for controlling the power supply module to supply power to the LED light board and controlling the operating parameters of the LED light board to realize sunlight simulation, the LED light board is provided with a mounting hole, and is coaxially fixedly connected with a column pin arranged on the reference platform through the mounting hole, the integrated sensor is used to detect the illumination parameters of the plurality of LED light boards at a location, the control module adjusts the output power of the LED light board according to the illumination parameters fed back by the integrated sensor to improve the irradiation uniformity, and also includes a fastener arranged on the side of the LED light board away from the reference platform, the fastener and the LED light board are clamped or bolted to the column pin of the reference platform through the plurality of mounting holes, The contact surface area between the fastener and the LED light board is greater than or equal to one third of the area of ​​the surface of the LED light board facing the fastener, and the offset error between the LED light board and the mounting hole is less than or equal to 0.05 mm. It also includes a PCB circuit board arranged on the back of the reference table, and the control module is arranged on the back of the reference table. The control module is connected to the PCB circuit board, and the PCB circuit board is connected to the LED light board for powering the LED light board. The fastener is a clamp plate, and a positive power supply terminal is provided at the left end of the clamp plate, and a negative power supply terminal is provided at the right end of the clamp plate. The positive pole of the LED light board is provided at the positive power supply terminal, and the negative pole of the LED light board is provided at the negative power supply terminal. The LED light board is pressed onto the electrode of the LED light board on the PCB circuit board through the clamp plate and the electrode fixing structure. The electrode fixing structure is a base copper column structure or a spring copper sheet structure.

2. The solar simulator according to claim 1, characterized in that It also includes a power supply module connected to the PCB circuit board and the control module, and the power supply module includes at least one of a mains power conversion module and a battery module. The mains power conversion module is used to convert the mains power into the working voltage of the PCB circuit board, and the battery module is used to charge from the mains power, store electrical energy, and supply power to the PCB circuit board.

3. The solar simulator according to any one of claims 1-2, characterized in that: It also includes multiple expansion boards arranged in the control module, each of the expansion boards is connected one-to-one with the LED light board, and a controllable resistor is provided in the expansion board. The control module controls the output resistance of the controllable resistor through the expansion board to control the output power of the corresponding LED light board.

4. The solar simulator according to claim 3, characterized in that: It also includes a sensor mounting hole provided on the reference platform for mounting the integrated sensor and a height adjustment device provided on the sensor mounting hole, wherein the height adjustment device is used to adjust the height difference of the integrated sensor relative to the surface of the reference platform.

5. The solar simulator according to claim 4, characterized in that: It also includes a neural network learning module connected to the control module, which is used to obtain the historical operating data of the LED light board and the historical data of the integrated sensor to establish and optimize the model, and output the control data of the LED light board according to the current radiation data of the integrated sensor.

6. The solar simulator according to claim 5, characterized in that: It also includes a sensor calibration module connected to the integrated sensor, for calibrating the integrated sensor.

7. The solar simulator according to claim 6, characterized in that: The center lines of the multiple LED light boards form a regular polygon or a circle, the integrated sensor is located at the center of the regular polygon or the circle, the number of LED chips of the multiple LED light boards is equal, and the models of the LED chips of the multiple LED light boards are the same or different.

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