High-power irradiance AM0 solar simulator

Abstract

The invention discloses a high-power irradiance AM0 solar simulator, which comprises a main cabinet, and is characterized in that a main control module, a test platform, an electric lifting device and a light source module are arranged in the main cabinet; the main control module is used for coordinating and controlling the overall operation of the main cabinet; the light source module comprises a plurality of straight-tube xenon lamps, the plurality of straight-tube xenon lamps are installed at the top of a test space divided in the main cabinet, and the back surface of each straight-tube xenon lamp is provided with a reflector, so that the light source module provides downward light; the light source module further comprises mirror surface aluminum installed on each side face of the testing space and used for reflecting light rays reaching the side faces. The test platform is located below the test space, the test platform is used for fixing a to-be-tested battery, and the test platform is installed on an electric lifting device, so that the test platform and the to-be-tested battery can integrally ascend and descend.

Description

Technical Field

[0001] The present invention relates to the technical field of solar simulators, and in particular to a high-irradiance AM0 solar simulator. Background Art

[0002] In the field of aerospace, solar cells are an important energy source for spacecraft. With the deepening of space exploration, the demand for performance testing of solar cells under high irradiation intensity is increasing. The irradiation intensity of traditional AM0 solar simulators is usually 0.8 - 1.2 times the standard light intensity, which cannot meet the performance testing requirements of solar cells under 500 - 1000 times the standard light intensity in special missions (such as near-solar orbit exploration, etc.). This makes it difficult to accurately evaluate the performance of the cells in the actual space environment and limits the development of space energy technologies. Summary of the Invention

[0003] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0004] A high-irradiance AM0 solar simulator includes a main cabinet, and a main control module, a test platform, an electric lifting device, and a light source module are arranged inside the main cabinet;

[0005] The main control module is used to coordinate and control the overall operation of the main cabinet;

[0006] The light source module includes a plurality of straight-tube xenon lamps, and the plurality of straight-tube xenon lamps are all installed on the top of the test space separated inside the main cabinet. A reflector is installed on the back of each straight-tube xenon lamp, so that the light source module provides light downward;

[0007] The light source module further includes mirror aluminum installed on each side of the test space for reflecting the light reaching the side;

[0008] The test platform is located below the test space, and the test platform is used to fix the battery to be tested, and the test platform is installed on the electric lifting device, so that the test platform and the battery to be tested can move up and down as a whole.

[0009] In some embodiments, the plurality of straight-tube xenon lamps are jointly used to provide 500 - 1000 times the standard light intensity.

[0010] In some embodiments, the test platform is configured with a temperature controller, and a semiconductor refrigeration technology is adopted to achieve temperature control of the test platform and the battery to be tested.

[0011] In some embodiments, the main cabinet is further configured with a water cooling module. The water cooling module supplies cold water through a water cooling tank arranged inside the main cabinet and is connected to different positions inside the main cabinet through water cooling pipelines to achieve water cooling.

[0012] In some embodiments, an infrared thermal imaging camera is further provided at the top of the test space. The infrared thermal imaging camera faces the test platform directly and is used to detect the temperature distribution of the battery under test.

[0013] In some embodiments, an electronic load box is further configured in the main cabinet. During the test, it is connected to the battery under test through the test platform and simulates different loads, so as to collect the performance parameters of the battery under test.

[0014] In some embodiments, the number of straight tube xenon lamps is four, and the four straight tube xenon lamps are symmetrically distributed in a square shape at the top of the test space.

[0015] In some embodiments, a light guide hole is opened on the reflector of each straight tube xenon lamp, and a standard solar cell is arranged at each light guide hole. The standard solar cell is used to collect the light intensity signal of the corresponding straight tube xenon lamp and feed it back to the main control module.

[0016] In some embodiments, the main control module includes a computer arranged in the main cabinet, and a display and related devices corresponding to the computer are further configured outside the main cabinet.

[0017] In some embodiments, a drive cabinet is further included, and a drive module for each straight tube xenon lamp is installed in the drive cabinet.

[0018] Compared with the prior art, the high-irradiance AM0 solar simulator provided by the present invention, through a light source composed of straight tube xenon lamps, reflectors and other structures, and cooperating with an electric lifting device to drive the test platform to move up and down, can achieve adjustable standard light intensity of 500 - 1000 times and stable output, accurately simulate the AM0 spectral conditions, meet the performance test requirements of solar cells in the aerospace field under high irradiation intensity, provide a basis for screening high-performance batteries, and promote the progress of aerospace energy technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the test space of the high-irradiance AM0 solar simulator provided by the present invention;

[0020] Figure 2 It is a schematic diagram of the main cabinet of the high-irradiance AM0 solar simulator provided by the present invention;

[0021] Figure 3 It is a schematic diagram of the setting of the straight tube xenon lamp, the reflector and the infrared thermal imaging camera;

[0022] Figure 4 It is a schematic diagram of the setting of the light guide hole and the standard solar cell;

[0023] Figure 5It is a schematic diagram of the drive cabinet.

[0024] Explanation of the reference numerals in the attached drawings:

[0025] 1. Test platform; 2. Electric lifting device; 3. Straight tube xenon lamp; 4. Reflector; 5. Mirror aluminum; 6. Water cooling box; 7. Infrared thermal imaging camera; 8. Electronic load box; 9. Standard solar cell; 10. Main cabinet; 11. Test space; 12. Computer; 13. Monitor; 14. Light guide hole; 20. Battery under test; 30. Drive cabinet; 31. Drive module. Specific implementation mode

[0026] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0027] Refer to Figure 1 and Figure 2 As shown, the present invention provides a high-irradiance AM0 solar simulator, which includes a main cabinet 10. Inside the main cabinet 10, there are a main control module, a test platform 1, an electric lifting device 2 and a light source module; the main control module is used to coordinate and control the overall operation of the main cabinet 10; the light source module includes a plurality of straight tube xenon lamps 3, and the plurality of straight tube xenon lamps 3 are all installed on the top of the test space 11 separated inside the main cabinet 10. A reflector 4 is installed on the back of each straight tube xenon lamp 3, so that the light source module provides downward light; the light source module also includes mirror aluminum 5 installed on each side of the test space 11, which is used to reflect the light reaching the side; the test platform 1 is located below the test space 11, and the test platform 1 is used to fix the battery under test 20, and the test platform 1 is installed on the electric lifting device 2, so that the test platform 1 and the battery under test 20 can move up and down as a whole.

[0028] The high-irradiance AM0 solar simulator provided by the present invention, through the light source composed of structures such as straight tube xenon lamps 3 and reflectors 4, and the cooperation of the electric lifting device 2 to drive the test platform 1 to move up and down, can achieve adjustable standard light intensity of 500-1000 times and stable output, accurately simulate the AM0 spectral conditions, meet the performance test requirements of solar cells in the aerospace field under high irradiation intensity, and promote the progress of aerospace energy technology.

[0029] The main control module may include a computer 12 disposed within the main cabinet 10. Outside the main cabinet 10, a display 13 corresponding to the computer 12 and related devices (such as a keyboard, a mouse, etc.) are also configured. The computer 12 runs customized software, is responsible for overall control, parameter setting, data processing and display, and cooperates with the acquisition card to collect various types of data at high speed and with high precision. The computer 12 can be configured with data processing software to calculate battery performance parameters, has functions such as data filtering, and displays data in various ways. A large-capacity storage device (such as an SSD) can also be configured to store test data and support backup and recovery.

[0030] Preferably, the test platform 1 is configured with a temperature controller, which adopts semiconductor refrigeration technology to achieve temperature control of the test platform 1 and the battery 20 to be tested. The temperature controller uses the PID algorithm to accurately control the temperature, ensuring that the test environment and the battery temperature are stable within the range of ±1°C of the set value. In addition, it can be understood that the test platform 1 is equipped with test fixtures and probes by itself. The test fixtures are used to fix the battery 20 to be tested, and the probes are used to connect to the electrodes of the battery 20 to be tested.

[0031] Preferably, the main cabinet 10 is also configured with a water cooling module. The water cooling module supplies cold water through a water cooling tank 6 disposed within the main cabinet 10 and is connected to different positions within the main cabinet 10 through water cooling pipelines to achieve water cooling.

[0032] Further referring to Figure 3 As shown, preferably, an infrared thermal imaging camera 7 is also provided at the top of the test space 11, and the infrared thermal imaging camera 7 faces the test platform 1 directly.

[0033] The infrared thermal imaging camera 7 is specifically used to monitor the battery temperature distribution in real time during the solar cell test, analyze the thermal characteristics of the battery, and provide data support for optimizing the battery performance and ensuring the test accuracy. Its functions and uses are mainly reflected in the following aspects:

[0034] Monitoring the battery temperature distribution: The solar cell generates heat under light, and uneven temperature distribution may affect its performance and stability. The battery 20 to be tested is sensitive to temperature during the test. Through infrared thermal imaging, the temperature differences in different regions of the battery can be clearly seen, and hot spots or temperature abnormal regions can be discovered in a timely manner, helping researchers understand the internal heat generation mechanism of the battery and judge whether there are defects or performance problems in the battery.

[0035] Evaluating the battery thermal performance: It helps to evaluate the thermal performance of the solar cell. By analyzing the thermal imaging data, parameters such as the thermal response time and heat dissipation speed of the battery can be obtained. These parameters are crucial for studying the thermal stability of the battery under different light conditions and loads and provide a reference for the optimized design of the battery. When simulating high-intensity light, the infrared thermal imaging can be used to observe the change trend of the battery temperature and study the influence law of temperature on the electrical performance of the battery, providing data support for improving the conversion efficiency and reliability of the battery.

[0036] Study the battery aging process: In long-term battery performance tests, the temperature change of the battery can be tracked by infrared thermal imaging to study the battery aging process. As the battery usage time increases, its internal structure and performance will change, and these changes may be reflected in the temperature distribution. By analyzing the thermal imaging data of the battery at different aging stages, the mechanism of battery aging can be deeply understood, providing a reference for predicting the battery life and formulating maintenance strategies.

[0037] Preferably, an electronic load box 8 is further configured in the main cabinet 10, which is used to connect to the battery under test 20 through the test platform 1 during the test and simulate different loads, and then collect the performance parameters of the battery under test 20. In a specific embodiment, the voltage range of the electronic load box 8 is 0 - 100V (multiple ranges), the current range is 0 - 30A (multiple ranges), and the measurement accuracy is 0.03%. The data collected by the electronic load box 8 is transmitted to the main control module through multiple interfaces.

[0038] Preferably, the number of straight tube xenon lamps 3 is four, and the four straight tube xenon lamps 3 are symmetrically distributed in a square at the top of the test space 11.

[0039] Further referring to Figure 4 As shown, preferably, a light guide hole 14 is opened on each reflector 4 of the straight tube xenon lamp 3, and a standard solar cell 9 is provided at each light guide hole 14. The standard solar cell 9 is used to collect the light intensity signal of the corresponding straight tube xenon lamp 3 and feedback it to the main control module.

[0040] Referring to Figure 5 As shown, preferably, a drive cabinet 30 is further included, and a drive module 31 for each straight tube xenon lamp 3 is installed in the drive cabinet.

[0041] In order to achieve stable control of the output light intensity of the straight-tube xenon lamp 3, the present invention adopts the method of proximal feedback. A standard solar cell 9 is installed at the proximal end of each straight-tube xenon lamp 3. The standard solar cell 9 can directly and quickly obtain the light intensity signal emitted by the straight-tube xenon lamp 3 and convert it into an electrical signal. This proximal feedback method reduces the loss and interference in the process of light signal transmission, and improves the accuracy and timeliness of the feedback signal. The light intensity electrical signal obtained by the standard solar cell 9 is fed back to the corresponding drive module 31, and this module adjusts the working current of the straight-tube xenon lamp 3 in real time according to the feedback signal. When the light intensity changes, for example, when the light intensity weakens, the drive module 31 will increase the working current of the straight-tube xenon lamp 3 to restore the luminous intensity of the straight-tube xenon lamp 3 to the set value; conversely, when the light intensity increases, the working current is reduced, so as to ensure the stability of the output light intensity of the straight-tube xenon lamp 3 and ensure the stability of the irradiance during the test. Through the special drive cabinet 30 of the present invention, combined with the light feedback signal provided by the standard solar cell 9, the working current of each straight-tube xenon lamp 3 can be accurately controlled to ensure stable light intensity.

[0042] When the high-concentration irradiance AM0 solar simulator provided by the present invention is in use:

[0043] First, perform equipment installation and debugging. In a clean and stable test site, assemble each module according to the design specifications. After connecting the lines, perform initialization settings on the equipment, and calibrate components such as sensors and acquisition cards. Calibrate the light source with the standard solar cell 9, and adjust parameters such as the optical path, light intensity, and temperature to the design requirements.

[0044] Then, make test preparations. Fix and connect the battery 20 to be tested through the test fixture and probe on the test platform 1, set test parameters such as irradiance intensity, spectral conditions, and test time in the main control software, set the target temperature of the temperature control system, and wait for the environment to stabilize.

[0045] During the test, start the equipment, and the main control module controls each module to work together. The light source generates high-concentration irradiance light to irradiate the battery, and adjust the lifting module of the test platform 1 as needed. Collect data during the test and transmit it to the main control module to display the test results in real time.

[0046] After the test, perform data processing and result analysis to generate a test report. The operator evaluates the battery performance based on the report to provide data support for battery research and development and application.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A high irradiance AM0 solar simulator, characterized in that: It comprises a main cabinet (10), wherein a main control module, a test platform (1), an electric lifting device (2) and a light source module are arranged inside the main cabinet (10); The main control module is used to coordinate and control the overall operation of the main cabinet (10); The light source module comprises a plurality of straight xenon lamps (3), the plurality of straight xenon lamps (3) are all installed on the top of a test space (11) separated in the main cabinet (10), and a reflector (4) is installed on the back of each straight xenon lamp (3), so that the light source module provides light directed downward; The light source module further comprises a mirror aluminum (5) installed on each side of the test space (11) for reflecting light reaching the side; The test platform (1) is located below the test space (11); the test platform (1) is used to fix the battery to be tested (20); and the test platform (1) is installed on an electric lifting device (2) so that the test platform (1) and the battery to be tested (20) can move upward and downward as a whole.

2. The high irradiance AM0 solar simulator according to claim 1, characterized in that: A plurality of straight xenon lamps (3) are used together to provide 500-1000 times the standard light intensity.

3. The high irradiance AM0 solar simulator according to claim 1, characterized in that: The test platform (1) is equipped with a temperature controller, and semiconductor refrigeration technology is used to achieve temperature control of the test platform (1) and the battery (20) to be tested.

4. The high irradiance AM0 solar simulator according to claim 1, characterized in that: The main cabinet (10) is also equipped with a water cooling module, which supplies cold water through a water cooling box (6) arranged in the main cabinet (10) and is connected to different positions in the main cabinet (10) through water cooling pipelines to achieve water cooling.

5. The high irradiance AM0 solar simulator according to claim 1, characterized in that: An infrared thermal imaging camera (7) is also arranged at the top of the test space (11), and the infrared thermal imaging camera (7) faces the test platform (1) and is used to detect and monitor the temperature distribution of the battery (20) to be tested.

6. The high irradiance AM0 solar simulator according to claim 1, characterized in that: The main cabinet (10) is also provided with an electronic load box (8) for connecting to the battery to be tested (20) via the test platform (1) during testing, and simulating different loads to collect performance parameters of the battery to be tested (20).

7. The high irradiance AM0 solar simulator according to claim 1, characterized in that: The number of the straight xenon lamps (3) is four, and the four straight xenon lamps (3) are symmetrically distributed in a square at the top of the test space (11).

8. The high irradiance AM0 solar simulator according to claim 1, characterized in that: A light guide hole (14) is provided on the reflector (4) of each straight tube xenon lamp (3), and a standard solar cell (9) is provided at each light guide hole (14). The standard solar cell (9) is used to collect the light intensity signal of the corresponding straight tube xenon lamp (3) and feed it back to the main control module.

9. The high irradiance AM0 solar simulator according to claim 1, characterized in that: The main control module comprises a computer (12) arranged in a main cabinet (10), and a display (13) and related equipment corresponding to the computer (12) are also arranged outside the main cabinet (10).

10. The high irradiance AM0 solar simulator according to claim 1, characterized in that: It also comprises a driving cabinet (30), in which a driving module (31) of each straight tube xenon lamp (3) is installed.

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