Infrared thermal image IV tester all-in-one machine

Abstract

An infrared thermal image IV tester all-in-one machine comprises an outer shell, and the side face of the outer shell is provided with a battery piece negative electrode interface, a battery piece positive electrode interface, a solar module positive electrode interface, a solar module negative electrode interface, a display screen and an infrared lens. The standard battery piece is connected with the first current sensor, and the first current sensor is connected with the central processing unit through the first current signal processor; a solar assembly positive electrode interface is connected with a second current sensor through a positive electrode wiring circuit breaker. The second current sensor is connected with the central processor through a second current signal processor. A cathode interface of the solar module is connected with the charging and discharging control unit through a cathode wiring circuit breaker; the infrared lens is connected with the infrared photoreceptor, and the infrared photoreceptor is connected with the central processing unit through the signal processor. Thermal image monitoring and IV testing of the solar module can be carried out synchronously, and the testing efficiency is improved. And the temperature data can be directly applied to data calculation of an IV curve, and a thermocouple test assembly does not need to be additionally connected.

Description

Technical Field

[0001] The present invention relates to the technical field of solar product testing, and particularly relates to an integrated infrared thermal imaging IV tester. Background Art

[0002] The application of solar power stations is becoming more and more popular. During the operation of solar power stations, it is inevitable that some component units fail, affecting the efficiency of the entire power station. Infrared thermal imagers and IV testers are the most common instruments used for on-site detection of power stations. Among them, the infrared thermal imager tests the heat generation situation on the surface of solar components to see if there are hot spots. Local hot spots will reduce the operation efficiency and even cause fires. The IV tester is used to test the power of solar components and analyze their attenuation situation.

[0003] However, current infrared thermal imagers and IV testers are mostly independent devices. During use, they need to be carried separately and used alternately, resulting in a long test cycle and inconvenient carrying. And the results of IV tests are greatly affected by irradiance and temperature. It is also necessary to externally connect a thermocouple to test the temperature of the components, with cumbersome operations, easy damage to the thermocouple, and high failure rates. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an integrated infrared thermal imaging IV tester, which overcomes the deficiencies of the prior art, is reasonably designed, and can synchronously perform thermal imaging monitoring and IV testing of solar components, improving the test efficiency. And the temperature data can be directly applied to the data calculation of the IV curve, without the need to externally connect a thermocouple to test the components anymore.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions:

[0006] An integrated infrared thermal imaging IV tester includes a housing. On the side of the housing, a negative electrode interface of a battery cell, a positive electrode interface of a battery cell, a positive electrode interface of a solar component, and a negative electrode interface of a solar component are respectively provided. Inside the housing cavity, a central processor, a first current sensor, a second current sensor, and an infrared sensor are fixedly installed; a rechargeable battery is fixedly installed at the bottom of the housing, and a display screen and an infrared lens are fixedly embedded on the surface of the housing;

[0007] The outsides of the negative electrode interface of the battery cell and the positive electrode interface of the battery cell are respectively connected to the negative electrode and the positive electrode of a standard battery cell through wires. The insides of the negative electrode interface of the battery cell and the positive electrode interface of the battery cell are respectively connected to the input ends of the first current sensor through wires. The output end of the first current sensor is connected to the input end of a first current signal processor, and the output end of the first current signal processor is connected to the central processor;

[0008] The outside of the positive interface and the negative interface of the solar module are respectively connected to the positive and negative electrodes of the solar module through wires. The inside of the positive interface of the solar module is connected to the input end of the second current sensor through a positive connection breaker. The output end of the second current sensor is connected to the input end of the second current signal processor. The output end of the second current signal processor is connected to the central processor. The inside of the negative interface of the solar module is connected to the first input end of the charge and discharge control unit through a negative connection breaker. The second input end of the charge and discharge control unit is connected to the second current sensor. The control ends of the charge and discharge control unit, the positive connection breaker, and the negative connection breaker are all connected to the signal output end of the central processor.

[0009] The infrared lens is connected to the infrared photosensor through an optical fiber. The output end of the infrared photosensor is connected to the signal processor. The output end of the signal processor is connected to the central processor. The central processor is connected to the display screen through a data bus. The rechargeable battery is connected to the central processor to supply the required electrical energy.

[0010] Preferably, the charge and discharge control unit includes a charging capacitor, a charging resistor, a discharging resistor, and a discharging breaker. One end of the charging capacitor is connected to one end of the discharging resistor and the second current sensor respectively. The other end of the discharging resistor is connected to one end of the discharging breaker. The other end of the charging capacitor is connected to one end of the charging resistor. The other end of the charging resistor is connected to the other ends of the negative connection breaker and the discharging breaker respectively. The control end of the discharging breaker is connected to the output end of the central processor.

[0011] Preferably, a voltage signal processor is fixedly installed in the inner cavity of the housing. The input end of the voltage signal processor is connected to the positive interface and the negative interface of the solar module through a positive wire and a negative wire respectively. The output end of the voltage signal processor is connected to the central processor.

[0012] Preferably, a battery cell thermocouple interface is provided on the side of the housing. The outside of the battery cell thermocouple interface is connected to the thermocouple of the standard battery cell through a wire. The inside of the battery cell thermocouple interface is connected to the input end of the temperature signal processor through a wire. The output end of the temperature signal processor is connected to the central processor. The temperature signal processor is fixedly installed in the inner cavity of the housing.

[0013] Preferably, the display screen adopts a high-resolution touch screen.

[0014] The present invention provides an integrated infrared thermal imaging IV tester, which has the following beneficial effects: it can monitor the thermal image of a solar module through an infrared sensor, and at the same time, it can accurately measure the outdoor weather irradiance by combining a standard cell, and then combine the data of the first current signal processor, the second current signal processor and the voltage signal processor to directly apply to the data calculation of the IV curve of the solar module, without the need to additionally connect a thermocouple test component, thereby simplifying the test process and effectively improving the measurement efficiency and accuracy. And the thermal image monitoring and IV test of the solar module can be carried out synchronously, and the performance change of the solar module can be feedback in real time, thereby effectively improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0016] Figure 1 Schematic structural diagram of the present invention;

[0017] Figure 2 Circuit schematic diagram of the inner cavity of the housing in the present invention;

[0018] Figure 3 Circuit connection schematic diagram of the charge and discharge control unit in the present invention;

[0019] Description of the reference numerals in the drawings:

[0020] 1. Housing; 2. Negative interface of the cell; 3. Positive interface of the cell; 4. Thermocouple interface of the cell; 5. Positive interface of the solar module; 6. Negative interface of the solar module; 7. Central processing unit; 8. First current sensor; 9. Second current sensor; 10. Infrared sensor; 11. Rechargeable battery; 12. Display screen; 13. Standard cell; 14. First current signal processor; 15. Temperature signal processor; 16. Solar module; 17. Positive connection breaker; 18. Second current signal processor; 19. Negative connection breaker; 20. Signal processor; 21. Charge capacitor; 22. Charge resistor; 23. Discharge resistor; 24. Discharge breaker; 25. Voltage signal processor; 26. Positive connection wire; 27. Negative connection wire; 28. Infrared lens. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention with reference to the drawings in the present invention.

[0022] Example 1, as Figures 1-3As shown in the figure, an integrated infrared thermal imaging IV tester includes a housing 1. On the side of the housing 1, there are respectively a negative electrode interface 2 of the battery cell, a positive electrode interface 3 of the battery cell, a positive electrode interface 5 of the solar module, and a negative electrode interface 6 of the solar module. Inside the housing 1, a central processor 7, a first current sensor 8, a second current sensor 9, and an infrared sensor 10 are fixedly installed. At the bottom of the housing 1, a rechargeable battery 11 is fixedly installed. On the surface of the housing 1, a display screen 12 and an infrared lens 28 are fixedly embedded.

[0023] The outside of the negative electrode interface 2 and the positive electrode interface 3 of the battery cell are respectively connected to the negative electrode and the positive electrode of the standard battery cell 13 through wires. The inside of the negative electrode interface 2 and the positive electrode interface 3 of the battery cell are respectively connected to the input ends of the first current sensor 8 through wires. The output end of the first current sensor 8 is connected to the input end of the first current signal processor 14. The output end of the first current signal processor 14 is connected to the central processor 7.

[0024] The outside of the positive electrode interface 5 and the negative electrode interface 6 of the solar module are respectively connected to the positive electrode and the negative electrode of the solar module 16 through wires. The inside of the positive electrode interface 5 is connected to the input end of the second current sensor 9 through a positive electrode connection circuit breaker 17. The output end of the second current sensor 9 is connected to the input end of the second current signal processor 18. The output end of the second current signal processor 18 is connected to the central processor 7. The inside of the negative electrode interface 6 of the solar module is connected to the first input end of the charge and discharge control unit through a negative electrode connection circuit breaker 19. The second input end of the charge and discharge control unit is connected to the second current sensor 9. The control ends of the charge and discharge control unit, the positive electrode connection circuit breaker 17, and the negative electrode connection circuit breaker 19 are all connected to the signal output end of the central processor 7.

[0025] The infrared lens 28 is connected to the infrared sensor 10 through an optical fiber. The output end of the infrared sensor 10 is connected to the signal processor 20. The output end of the signal processor 20 is connected to the central processor 7. The central processor 7 is connected to the display screen 12 through a data bus. The rechargeable battery 11 is connected to the central processor 7 to supply the required electrical energy.

[0026] In this embodiment, the charge and discharge control unit includes a charging capacitor 21, a charging resistor 22, a discharging resistor 23, and a discharging circuit breaker 24. One end of the charging capacitor 21 is respectively connected to one end of the discharging resistor 23 and the second current sensor 9. The other end of the discharging resistor 23 is connected to one end of the discharging circuit breaker 24. The other end of the charging capacitor 21 is connected to one end of the charging resistor 22. The other end of the charging resistor 22 is respectively connected to the negative electrode connection circuit breaker 19 and the other end of the discharging circuit breaker 24. The control end of the discharging circuit breaker 24 is connected to the output end of the central processor 7.

[0027] Inside the inner cavity of the outer housing 1, a voltage signal processor 25 is fixedly installed. The input terminals of the voltage signal processor 25 are respectively connected to the positive electrode interface and the negative electrode interface of the solar module through a positive electrode connection wire 26 and a negative electrode connection wire 27, and the output terminal of the voltage signal processor 25 is connected to the central processor 7.

[0028] Working principle:

[0029] During use, first, the infrared lens 28 converges the image of the solar module 16 into the infrared sensor 10. Then, the heat distribution data sensed by the infrared sensor 10 is transmitted to the signal processor 20. After being processed by the signal processor 20, it is transmitted to the central processor 7. The central processor 7 corresponds different signals to temperature data and converts them into color signals, which are then transmitted to the display screen 12 through the data bus to display the thermal image of the solar module 16 in real time. In this embodiment, multiple photosensitive units are provided inside the infrared lens 28, so that the average temperature on the surface of the solar module 16 can be obtained as the average value of the temperatures obtained by all the photosensitive units in the infrared sensor.

[0030] The standard cell 13 is used to measure the outdoor irradiance. The current of the standard cell 13 will change with the change of irradiance. Since the positive electrode and the negative electrode of the standard cell 13 are respectively connected to the input terminals of the first current sensor 8 through wires, the current change of the standard cell 13 can be measured by the first current sensor 8. Then, after the first current sensor 8 processes the current signal through the first current signal processor 14, it is input into the central processor 7. The central processor 7 combines the current data of the standard cell 13 to obtain the accurate value of the outdoor weather irradiance.

[0031] The central processor 7 outputs control signals to the positive electrode connection breaker 17, the negative electrode connection breaker 19, and the discharge breaker 24 to control the positive electrode connection breaker 17 and the negative electrode connection breaker 19 to close and the discharge breaker 24 to open; so that the positive electrode of the solar module 16 is connected to the second current signal processor 18 through the second current sensor 9. At this time, the central processor 7 respectively collects the data of the first current signal processor 14, the second current signal processor 18, and the voltage signal processor 25.

[0032] The positive and negative electrodes of the solar module 16 are respectively connected to the charge and discharge control unit, so that the solar module 16 can be used to charge the charging capacitor 21 in the charge and discharge control unit. During the charging process, it can be considered as a process in which the resistance in the circuit changes from 0 to infinity. Then, through the second current signal processor 18 and the voltage signal processor 25, the current data and voltage data in this process are respectively extracted and transmitted to the central processor 7. The central processor 7 combines the temperature data sensed by the infrared sensor 10 and the irradiance data of the standard cell 13, and through the relationships such as the voltage-current temperature coefficient and the irradiance influence factor of the solar module 16, the data under the standard test conditions (1000 W / m2 and 25 °C) can be converted, which is the IV curve of the solar module 16. The central processor 7 can transmit this IV curve data to the display screen 12 through the data bus for real-time display on the display screen 12. In addition, the central processor 7 can also obtain the maximum value of the product of the current and voltage in this process, which is the maximum power value. Thus, by comparing the size of the maximum power value and the factory parameters, the attenuation situation of the solar module 16 can be understood. Combining with the infrared thermal image situation of the infrared sensor 10, a relatively comprehensive analysis can be carried out to perform operation and maintenance on the solar power station.

[0033] The present invention can not only perform thermal imaging monitoring on the solar module 16 through the infrared sensor 10, but also accurately measure the outdoor weather irradiance by combining the standard cell 13. Then, combining the data of the first current signal processor 14, the second current signal processor 18 and the voltage signal processor 25, it can be directly applied to the data calculation of the IV curve of the solar module 16 without additionally connecting a thermocouple test component, thus simplifying the test process and effectively improving the measurement efficiency and accuracy. And the thermal imaging monitoring of the solar module 16 and the data calculation of the IV curve of the solar module 16 can be carried out synchronously, real-time feedback the change of the component performance, and effectively improve the test efficiency. Through the above method, the operation and maintenance personnel can grasp the working state of the solar module in real time, discover and solve potential problems in time, and ensure the efficient and stable operation of the power station.

[0034] Embodiment 2, as a further preferred solution of Embodiment 1, a cell thermocouple interface 4 is provided on the side of the outer housing 1. The outside of the cell thermocouple interface 4 is connected to the thermocouple of the standard cell 13 through a wire, and the inside of the cell thermocouple interface 4 is connected to the input end of the temperature signal processor 15 through a wire. The output end of the temperature signal processor 15 is connected to the central processor 7; the temperature signal processor 15 is fixedly installed in the inner cavity of the outer housing 1.

[0035] Therefore, the temperature on the standard cell 13 is connected to the temperature signal processor 15 through the cell thermocouple interface 4, so that the temperature of the standard cell 13 can be monitored in real time through the temperature signal processor 15, and the temperature data is transmitted to the central processor 7. Then, the central processor 7 can comprehensively analyze the temperature data to increase the calibration coefficient, and then the accurate value of the outdoor weather irradiance can be obtained more accurately. Thus, the performance evaluation accuracy of the solar module 16 is further improved.

[0036] Embodiment 3, as a further preferred solution of Embodiment 1, the display screen 12 uses a high-resolution touch screen. Therefore, more intuitive operation and data display can be realized through the high-resolution touch screen, which is convenient for operation and maintenance personnel to quickly retrieve key information and improve the decision-making efficiency.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An infrared thermal imaging IV tester integrated machine, characterized by: The invention comprises an outer shell (1), wherein the side of the outer shell (1) is respectively provided with a battery cell negative electrode interface (2), a battery cell positive electrode interface (3), a solar module positive electrode interface (5) and a solar module negative electrode interface (6); a central processing unit (7), a first current sensor (8), a second current sensor (9) and an infrared photoreceptor (10) are fixedly installed in the inner cavity of the outer shell (1); a rechargeable battery (11) is fixedly installed at the bottom of the outer shell (1); and a display screen (12) and an infrared lens (28) are fixedly embedded on the surface of the outer shell (1); The outer sides of the battery cell negative electrode interface (2) and the battery cell positive electrode interface (3) are respectively connected to the negative electrode and the positive electrode of the standard battery cell (13) through wires, and the inner sides of the battery cell negative electrode interface (2) and the battery cell positive electrode interface (3) are respectively connected to the input end of the first current sensor (8) through wires, the output end of the first current sensor (8) is connected to the input end of the first current signal processor (14), and the output end of the first current signal processor (14) is connected to the central processing unit (7); The outer sides of the solar module positive electrode interface (5) and the solar module negative electrode interface (6) are respectively connected to the positive electrode and negative electrode of the solar module (16) through wires; the inner side of the solar module positive electrode interface (5) is connected to the input end of the second current sensor (9) through a positive electrode wiring circuit breaker (17); the output end of the second current sensor (9) is connected to the input end of the second current signal processor (18); the output end of the second current signal processor (18) is connected to the central processing unit (7); the inner side of the solar module negative electrode interface (6) is connected to the first input end of the charge and discharge control unit through a negative electrode wiring circuit breaker (19); the second input end of the charge and discharge control unit is connected to the second current sensor (9); the control end of the charge and discharge control unit, the control end of the positive electrode wiring circuit breaker (17) and the control end of the negative electrode wiring circuit breaker (19) are all connected to the signal output end of the central processing unit (7); The infrared lens (28) is connected to the infrared photoreceptor (10) via an optical fiber; the output end of the infrared photoreceptor (10) is connected to the signal processor (20); the output end of the signal processor (20) is connected to the central processing unit (7); the central processing unit (7) is connected to the display screen (12) via a data bus; the rechargeable battery (11) is connected to the central processing unit (7) for supplying required electrical energy.

2. The infrared thermal imaging IV tester according to claim 1, characterized in that: The charge and discharge control unit comprises a charging capacitor (21), a charging resistor (22), a discharging resistor (23) and a discharging circuit breaker (24); one end of the charging capacitor (21) is respectively connected to one end of the discharging resistor (23) and a second current sensor (9); the other end of the discharging resistor (23) is connected to one end of the discharging circuit breaker (24); the other end of the charging capacitor (21) is connected to one end of the charging resistor (22); the other end of the charging resistor (22) is respectively connected to the negative pole wiring circuit breaker (19) and the other end of the discharging circuit breaker (24); and the control end of the discharging circuit breaker (24) is connected to the output end of the central processing unit (7).

3. The infrared thermal imaging IV tester according to claim 1, characterized in that: A voltage signal processor (25) is fixedly installed in the inner cavity of the outer shell (1); the input end of the voltage signal processor (25) is connected to the positive electrode interface and the negative electrode interface of the solar module through a positive electrode connection line (26) and a negative electrode connection line (27), respectively; and the output end of the voltage signal processor (25) is connected to the central processor (7).

4. The infrared thermal imaging IV tester according to claim 1, characterized in that: A cell thermocouple interface (4) is provided on the side of the outer shell (1); the outer side of the cell thermocouple interface (4) is connected to the thermocouple of the standard cell (13) via a wire; the inner side of the cell thermocouple interface (4) is connected to the input end of a temperature signal processor (15) via a wire; the output end of the temperature signal processor (15) is connected to a central processing unit (7); and the temperature signal processor (15) is fixedly mounted in the inner cavity of the outer shell (1).

5. The infrared thermal imaging IV tester according to claim 1, characterized in that: The display screen (12) adopts a high-resolution touch screen.

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