Photovoltaic module test system

Abstract

The utility model provides a photovoltaic assembly test system which is characterized in that the photovoltaic assembly test system comprises a water tank, a driving assembly and a control cabinet, the driving assembly is connected with the water tank, and the driving assembly is electrically connected with the control cabinet; the driving assembly comprises a temperature control unit and a lifting drive, and a lifting basket is arranged in the water tank; the temperature control unit is used for controlling the temperature of a solution in the water tank; the lifting drive is connected with the lifting basket, the lifting drive is used for driving the lifting basket to ascend and descend in the water tank, and the lifting basket is used for placing a photovoltaic module to be detected; the control cabinet comprises a test instrument and an industrial control all-in-one machine, and the industrial control all-in-one machine is electrically connected with the test instrument and monitors the test instrument. The photovoltaic assembly test system provided by the utility model realizes more accurate, safer and more efficient test of the photovoltaic assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic component testing system. Background Art

[0002] At present, various test platforms have been designed to evaluate the various performances of photovoltaic modules. For example, the wet leakage current detection test is to test the insulation performance of photovoltaic modules under wet working conditions and detect whether moisture from rain, fog, dew or melting snow enters the working part of the internal circuit of the module and causes corrosion, leakage and other non-safety accidents.

[0003] However, when the current testing platform is testing, many steps require manual participation, and the degree of automation of the testing process is not high. Utility Model Content

[0004] The utility model provides a photovoltaic component testing system, which is used to solve the defect of low automation degree of the testing process in the prior art, saves the cost of manpower and time, and also improves the stability of the test.

[0005] The utility model provides a photovoltaic component testing system, comprising: a water tank, a driving component and a control cabinet, wherein the driving component is connected to the water tank, and the driving component is electrically connected to the control cabinet;

[0006] The drive assembly includes a temperature control unit and a lifting drive, and the water tank includes a lifting basket;

[0007] The temperature control unit is used to control the temperature of the solution in the water tank;

[0008] The lifting drive is connected to the lifting basket, the lifting drive is used to drive the lifting basket to rise and fall in the water tank, and the lifting basket is used to place the photovoltaic module to be tested;

[0009] The control cabinet includes a test instrument and an industrial control all-in-one computer, the industrial control all-in-one computer is electrically connected to the test instrument and monitors the test instrument; the industrial control all-in-one computer controls the test instrument to execute at least one test item and outputs the test result of the at least one test item, and the test items include wet leakage current test, insulation withstand voltage test and ground continuity test.

[0010] According to a photovoltaic module testing system provided by the utility model, a plurality of drainage grids are arranged on the lifting basket.

[0011] According to a photovoltaic module testing system provided by the utility model, the lifting basket is a metal mesh structure.

[0012] According to a photovoltaic module testing system provided by the utility model, the testing instrument includes a comprehensive safety tester and a conductivity meter;

[0013] The industrial control integrated machine is used to communicate with the comprehensive safety tester and the conductivity meter respectively, and output the test result of the at least one test item obtained from the comprehensive safety tester and the conductivity meter.

[0014] According to a photovoltaic module testing system provided by the utility model, the industrial control integrated machine is provided with an automated operation program;

[0015] The functions of the automated operation program include: inputting the information of the photovoltaic module to be tested, selecting the test items, setting test parameters, saving test results and outputting an original data table.

[0016] According to a photovoltaic module testing system provided by the utility model, the lifting drive includes a lifting handle, a cylinder and at least two air pumps, and the cylinder is arranged on one side outside the water tank.

[0017] According to a photovoltaic module testing system provided by the utility model, the at least two air pumps are symmetrically arranged in the water tank.

[0018] According to a photovoltaic component testing system provided by the utility model, a circulation pipeline is arranged in the water tank, and the driving component further comprises a water pump, and the water pump is arranged on the circulation pipeline.

[0019] According to a photovoltaic component testing system provided by the utility model, the system further includes a base, and the base is arranged below the water tank.

[0020] According to a photovoltaic module testing system provided by the utility model, the water tank is made of transparent material.

[0021] The utility model provides a photovoltaic module testing system, which can fully automate the various steps of pre-test preparation, test process and output results by controlling the coordination of the cabinet with the water tank and the drive component. The lifting device can directly control the lifting of the lifting basket through the lifting drive, so that the photovoltaic module to be tested can be quickly immersed in the solution and lifted out of the solution. The industrial control all-in-one machine monitors the test instrument through the communication device to achieve the purpose of directly controlling the industrial control all-in-one machine to complete all tests. The problem of traditional testing devices consuming manpower and time costs in actual use is solved, and this test system realizes a more accurate, safe and efficient testing method for photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0023] Figure 1 It is a structural schematic diagram of the photovoltaic module testing system provided by the utility model;

[0024] Figure 2 It is a structural schematic diagram of a driving component of a photovoltaic component testing system provided by the utility model;

[0025] Figure 3 This is a front view of a driving component of a photovoltaic component testing system provided by the utility model;

[0026] Figure 4 It is a left view of the driving component of the photovoltaic component testing system provided by the utility model;

[0027] Figure 5 It is a top view of the driving component of the photovoltaic component testing system provided by the utility model;

[0028] Figure 6 It is a structural schematic diagram of a control cabinet of a photovoltaic module testing system provided by the utility model;

[0029] Reference numerals:

[0030] 1: water tank; 11: water tank drain; 12: circulation pipeline; 13: lifting basket; 14: water pump;

[0031] 2: driving assembly; 21: condensation outlet; 22: circulating water pipe outlet; 23: power cabinet; 24: cylinder; 25: air pump; 26: temperature control unit;

[0032] 3: Control cabinet; 31: Safety comprehensive tester; 32: Conductivity meter; 33: Industrial control integrated machine;

[0033] 4: Base. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Photovoltaic modules are solar cell modules formed by sealing a certain number of single-chip cells in series and parallel. Photovoltaic modules are composed of high-efficiency crystalline silicon solar cells, ultra-white cloth-textured tempered glass, EVA, transparent TPT backplane and aluminum alloy frame. When used and installed outdoors, moisture should be prevented from entering the module and the photovoltaic module should be charged externally. Therefore, when photovoltaic modules leave the factory, they need to be tested for wet leakage current, insulation withstand voltage and grounding continuity.

[0036] The wet leakage current test is mainly used to test the insulation performance of photovoltaic modules under humid working conditions, and to detect whether moisture from rain, fog, dew or melting snow will enter the working part of the internal circuit of the module, causing corrosion, leakage, and unreliable accidents.

[0037] The insulation withstand voltage test is mainly used to determine whether there is good insulation capacity between the current-carrying parts of the photovoltaic module and the frame or other external accessible parts.

[0038] The ground continuity test is mainly used to confirm the continuity between the conductive parts of the photovoltaic module.

[0039] Combine the following Figure 1-Figure 6 The photovoltaic module testing system of the utility model is described, wherein: Figure 1 It is a structural schematic diagram of the photovoltaic module testing system provided by the utility model. Figure 2 It is a structural schematic diagram of a driving component of a photovoltaic component testing system provided by the utility model. Figure 3 This is a front view of a driving component of a photovoltaic component testing system provided by the utility model. Figure 4 This is a left view of the driving component of the photovoltaic component testing system provided by the utility model. Figure 5 It is a top view of the driving component of the photovoltaic component testing system provided by the utility model. Figure 6 It is a structural schematic diagram of a control cabinet of a photovoltaic component testing system provided by the utility model.

[0040] like Figure 1 As shown, the photovoltaic module testing system of the embodiment of the utility model comprises: a water tank 1, a drive component 2 and a control cabinet 3, the drive component 2 is connected to the water tank 1, and the drive component 2 and the control cabinet 3 are electrically connected;

[0041] The drive assembly 2 includes a temperature control unit 26 and a lifting drive, and the water tank 1 includes a lifting basket 13;

[0042] The temperature control unit 26 is used to control the temperature of the solution in the water tank 1;

[0043] The lifting drive is connected to the lifting basket 13, and the lifting drive is used to drive the lifting basket 13 to rise and fall in the water tank 1, and the lifting basket 13 is used to place the photovoltaic module to be tested;

[0044] The control cabinet 3 includes a test instrument and an industrial control integrated machine 33. The industrial control integrated machine 33 is electrically connected to the test instrument and monitors the test instrument. The industrial control integrated machine 33 controls the test instrument to execute at least one test item and outputs the test result of at least one test item. The test items include wet leakage current test, insulation withstand voltage test and ground continuity test.

[0045] like Figure 1 and Figure 4 As shown, the water tank 1 also includes a water tank drain outlet 11, a circulation pipeline 12, a lifting basket 13 and a water pump 14, and the driving component 2 also includes a condensation outlet 21, a circulating water pipeline outlet 22, a power cabinet 23, a cylinder 24 and an air pump 25.

[0046] It should be noted that the temperature control unit 26 can also be called a hot and cold temperature control unit, which can heat, cool and control the temperature of the test solution to ensure the stability of the solution temperature. At the same time, many current test systems only combine the wet leakage current with the insulation test system, and the grounding continuity test is a test item adjacent to the above two tests in the IEC 61730 test sequence, and the test process is similar, which is very suitable for integrating the three tests together. Therefore, based on the control of manpower and time costs and the pursuit of test stability, the utility model designs a control cabinet to realize a system for the three-in-one test of wet leakage current, insulation and grounding of photovoltaic modules.

[0047] The driving assembly 2 is arranged in a power cabinet 23. Specifically, the power cabinet 23 includes a temperature control unit 26, a thermostat, a water pump 14, and an air pump 25, which are used to control the water temperature and lift the basket 13. The power cabinet 23 can meet the requirements of stability and uniformity of the test solution temperature.

[0048] In specific implementation, the industrial control integrated machine 33 controls the comprehensive safety tester 31 to output the required voltage and current through communication.

[0049] The photovoltaic module testing system of the utility model can fully automate the various steps of pre-test preparation, test process and output results by controlling the coordination of the cabinet, the water tank and the drive component. The lifting and lowering of the lifting basket can be directly controlled by the lifting drive, so that the photovoltaic module to be tested can be quickly immersed in the solution and lifted out of the solution. The industrial control integrated machine monitors the test instrument through the communication device to achieve the purpose of directly controlling the industrial control integrated machine to complete all tests. The problem of traditional test devices consuming manpower and time costs in actual use is solved. This test system realizes a more accurate, safe and efficient test method for photovoltaic modules.

[0050] In some embodiments, a plurality of drainage grids are provided on the lifting basket 13 .

[0051] It should be noted that when performing the wet leakage current test, the photovoltaic modules need to be completely immersed in water. After the test is completed, moving the photovoltaic modules out of the water needs to overcome a large surface tension, so a drainage grid is designed on the lifting basket 13.

[0052] In some embodiments, the lifting basket 13 can be a metal mesh structure, or other structures that meet the requirements of high rigidity, no rust, no surface damage to components, insulation and good drainage.

[0053] In some embodiments, the lifting basket 13 can be a PP (polypropylene) basket with a stainless steel square tube embedded in the frame. Its metal mesh structure can reduce water resistance and facilitate immersion in and lifting out of the solution.

[0054] In some embodiments, the test instrument includes a comprehensive safety tester 31 and a conductivity meter 32;

[0055] The industrial control integrated machine 33 is used to communicate with the safety comprehensive tester 31 and the conductivity meter 32 respectively, and output the test result of at least one test item obtained from the safety comprehensive tester 31 and the conductivity meter 32 .

[0056] It should be noted that the safety comprehensive tester 31 can apply voltage to the photovoltaic module to perform wet leakage current, insulation and grounding tests; the conductivity meter 32 is used to test the conductivity of the solution. The conductivity meter 32 is connected to the industrial control integrated machine 33 through communication. After power-on, the probe of the conductivity meter 32 is placed in the water as required, and the industrial control integrated machine 33 automatically collects data for automatic measurement.

[0057] In some embodiments, the industrial control integrated machine 33 is provided with an automated operation program;

[0058] The functions of the automated operation program include: inputting the information of the photovoltaic modules to be tested, selecting the test items, setting the test parameters, saving the test results and outputting the original data table.

[0059] In some embodiments, the insulation withstand voltage test is based on IEC 61215-2 "Photovoltaic (PV) module safety qualification-Part 2: Requirements for testing" MQT03; the wet leakage current test is based on IEC 61215-2 "Photovoltaic (PV) module safety qualification-Part 2: Requirements for testing" MQT15; the ground continuity test is based on IEC 61730-2 "Photovoltaic (PV) module safety qualification-Part 2: Requirements for testing"

[0060] (Photovoltaic(PV)module safety qualification–Part 2:Requirements for testing)MST13.

[0061] It should be noted that the existing solutions do not consider the automated test system, or only consider improving the degree of automation during the test process, ignoring that after the test, the tester still needs to copy by hand, which is easy to cause low-level errors such as data transcription errors. Therefore, the system of this embodiment forms a data table before outputting the original data through the existing specifications, thereby improving work efficiency and data recording accuracy.

[0062] Specifically, the software system runs on the industrial control integrated machine 33, automatically collects the measurement data of the safety comprehensive tester 31 and the conductivity meter 32, and records the input data, calculates the data results as required, generates and stores the original historical data in a certain format.

[0063] In some embodiments, the lifting drive includes a lifting handle, a cylinder 24 , and at least two air pumps 25 , and the cylinder 24 is disposed on one side outside the water tank 1 .

[0064] It should be noted that the operator waits for the air pump 25 to store air by operating the lifting handle to meet the air pressure and air volume requirements to ensure smooth lifting. After the photovoltaic component is short-circuited, it is placed in the lifting basket 13 and immersed in water, and then the applied voltage and test time are set to conduct the test more accurately; after the test is completed, the leakage current and resistance data can be read and saved to determine the test results. The lifting handle can be pulled to lift the basket and remove the sample, reducing the consumption of manpower and time costs. Compared with the traditional method of lifting the photovoltaic component immersed in water out of the water by manpower, which requires overcoming large surface tension, the solution of the utility model adds a lifting handle and a lifting basket, which is convenient for directly operating the lifting handle to realize the immersion and lifting operations.

[0065] The air cylinder 24 and the air pump 25 serve as the power system of the lifting device. The air cylinder 24 stores air, and the lifting basket 13 can be mechanically controlled to be immersed in and lifted out of the solution.

[0066] In some embodiments, at least two air pumps 25 are symmetrically disposed in the water tank 1 .

[0067] It should be noted that the water tank 1 can be an acrylic water tank.

[0068] In some embodiments, a circulation pipeline 12 is disposed in the water tank 1 , and the driving assembly 2 further includes a water pump 14 , which is disposed on the circulation pipeline 12 .

[0069] It should be noted that the circulation pipeline 12 is a passage for solution circulation.

[0070] In some embodiments, the photovoltaic module testing system further includes a base 4 , which is disposed below the water tank 1 .

[0071] It should be noted that the base 4 can be an aluminum alloy base, which is arranged under the water tank 1 and is used to fix the water tank bracket and the power cabinet 23. Since there is a water pipe connection between the power cabinet 23 and the water tank 1, and there is an air pipe connection between the power cabinet 23 and the bracket, the fixing of the base 4 can prevent misalignment.

[0072] In some embodiments, the water tank 1 may be made of a transparent material.

[0073] Specifically, the water tank 1 can be an acrylic water tank. The transparent material can facilitate better observation of changes in the photovoltaic module to be tested during the test, and facilitate operators to implement different measures in a timely manner.

[0074] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0075] The utility model discloses a three-in-one test system for wet leakage current, insulation and grounding of photovoltaic modules, which mainly includes a water tank 1, a lifting basket 13 located in the water tank 1, a drive assembly 2, a lifting drive located in the drive assembly 2, a control cabinet 3 and a base 4. The water tank 1 can be a constant temperature water tank for containing test solution and photovoltaic modules. The lifting drive is used to drive the lifting basket 13 to immerse the photovoltaic module into and lift it out of the water tank 1. The base 4 can be, for example, an aluminum alloy base for fixing the photovoltaic module test system. The drive assembly 2 includes a power cabinet 23, which is used to control the solution temperature and the lifting basket 13, and the control cabinet 3 is used to control the test.

[0076] The water tank 1 is a container with an opening at the top, and is mainly composed of a circulation pipeline 12, a water pump 14, and a temperature control unit 26. The circulation pipeline 12 is a passage for solution circulation, the water tank 1 is used to hold the test solution, the water pump 14 is used to provide power for the solution to circulate, and the temperature control unit 26 is used to heat and cool the solution and control the solution temperature.

[0077] In this embodiment, the lifting device is a metal mesh structure, placed inside the constant temperature water tank, and mainly consists of a lifting basket 13, a cylinder 24, and an air pump 25. The lifting basket 13 is a platform for the lifting device, which is used to place photovoltaic modules, the cylinder 24 is used to store air, and the air pump 25 is used to provide power for the lifting device.

[0078] The base 4 of aluminum alloy is used to fix the constant temperature water tank.

[0079] The power cabinet 23 includes the water pump 14, the temperature control unit 26 and the air pump 25, and is used to control the water temperature and the lifting device.

[0080] The control cabinet 3 is mainly composed of a safety comprehensive tester 31, a conductivity meter 32, and an industrial control integrated machine 33. The safety comprehensive tester 31 is used to apply voltage for wet leakage current test, insulation withstand voltage test, and ground continuity test, the conductivity meter 32 is used to measure the conductivity of the solution, and the industrial control integrated machine 33 is loaded with an automated operation program, which can realize functions such as inputting sample information, selecting test items, setting test parameters, and saving and exporting test data.

[0081] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A photovoltaic module testing system, characterized in that: include: A water tank, a drive assembly and a control cabinet, wherein the drive assembly is connected to the water tank, and the drive assembly is electrically connected to the control cabinet; The drive assembly includes a temperature control unit and a lifting drive, and the water tank includes a lifting basket; The temperature control unit is used to control the temperature of the solution in the water tank; The lifting drive is connected to the lifting basket, the lifting drive is used to drive the lifting basket to rise and fall in the water tank, and the lifting basket is used to place the photovoltaic module to be tested; The control cabinet includes a test instrument and an industrial control all-in-one computer, the industrial control all-in-one computer is electrically connected to the test instrument and monitors the test instrument; the industrial control all-in-one computer controls the test instrument to execute at least one test item and outputs the test result of the at least one test item, and the test items include wet leakage current test, insulation withstand voltage test and ground continuity test.

2. The photovoltaic module testing system according to claim 1, characterized in that: A plurality of drainage grids are arranged on the lifting basket.

3. The photovoltaic module testing system according to claim 1, characterized in that: The lifting basket is a metal mesh structure.

4. The photovoltaic module testing system according to any one of claims 1 to 3, characterized in that: The test instruments include a comprehensive safety tester and a conductivity meter; The industrial control integrated machine is used to communicate with the comprehensive safety tester and the conductivity meter respectively, and output the test result of the at least one test item obtained from the comprehensive safety tester and the conductivity meter.

5. The photovoltaic module testing system according to any one of claims 1 to 3, characterized in that: The lifting drive comprises a lifting handle, a cylinder and at least two air pumps, and the cylinder is arranged on one side outside the water tank.

6. The photovoltaic module testing system according to claim 5, characterized in that: The at least two air pumps are symmetrically arranged in the water tank.

7. The photovoltaic module testing system according to any one of claims 1 to 3, characterized in that: A circulation pipeline is arranged in the water tank, and the driving assembly further comprises a water pump, which is arranged on the circulation pipeline.

8. The photovoltaic module testing system according to any one of claims 1 to 3, characterized in that: The system also includes a base disposed below the sink.

9. The photovoltaic module testing system according to any one of claims 1 to 3, characterized in that: The water tank is made of transparent material.

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