CN212783490U - Detection device for solar cell after PID performance detection - Google Patents
Detection device for solar cell after PID performance detection Download PDFInfo
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- CN212783490U CN212783490U CN202022065806.2U CN202022065806U CN212783490U CN 212783490 U CN212783490 U CN 212783490U CN 202022065806 U CN202022065806 U CN 202022065806U CN 212783490 U CN212783490 U CN 212783490U
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Abstract
The utility model discloses a detection equipment for solar cell after PID performance detection, it includes constant voltage power supply, controller, darkroom and establishes test platform, survey probe row and the image device in the darkroom, test platform includes insulating part and conductive part, solar cell puts on the conductive part, test probe row is used for pressing on solar cell main grid line when testing; the conductive part is connected with one end of the constant voltage power supply, and the test probe row is connected with the other end of the constant voltage power supply; the positive electrode of the solar cell is connected with the negative electrode of the constant voltage power supply, the negative electrode of the solar cell is connected with the positive electrode of the constant voltage power supply, and the constant voltage power supply supplies power to the cell; the controller is used for adjusting the voltage or the current of the constant voltage power supply so as to adjust the electrifying voltage and the electrifying time of the battery; the imaging device is used for photographing the solar cell. The utility model provides a check out test set, be convenient for follow-up through photo discernment solar cell electric leakage position, type and size, and then do benefit to the reason of judging the PID problem that exceeds standard.
Description
Technical Field
The utility model relates to a photovoltaic module field especially relates to a check out test set that is used for solar cell after PID performance detects.
Background
In order to guarantee the photovoltaic power generation benefits, the requirements of customers on the quality of the components are higher and higher. The module power decay warranties have been expressly included in the contract, and thus individual module manufacturers have placed additional emphasis on the LID and PID performance of photovoltaic cells and modules. In order to meet the photovoltaic module power attenuation standard, each battery and module manufacturer uses LID and PID as internal regular monitoring items. When the battery monitors the PID conventionally, the problem that the PID exceeds the standard is often found. But at present, no analysis detection device aiming at the high PID problem causes exists.
Because there is not analysis check out test set to the PID problem reason at present, when running into the high PID problem, can't analyze out the true reason that leads to the high PID problem of battery, and the battery producer can only blindly adjust battery technology to improve battery PID to lead to the long-time unable battery PID problem of really solving.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a check out test set for solar cell after PID performance detects, technical scheme is as follows:
the utility model provides a check out test set that is used for solar cell after PID performance detects, it includes constant voltage power supply, controller, darkroom and sets up test platform, survey probe row and the image device in the darkroom, test platform includes insulating part and the conductive part that sets up on the insulating part, and the solar cell that awaits measuring places on test platform's conductive part, the test probe row is supported when being used for the test and is pressed on solar cell's main grid line, the conductive part is connected with constant voltage power supply's one end, survey probe row and constant voltage power supply's the other end connection;
the positive electrode of the solar cell is connected with the negative electrode of the constant voltage power supply, the negative electrode of the solar cell is connected with the positive electrode of the constant voltage power supply, and the constant voltage power supply is used for supplying power to the solar cell; the controller is used for adjusting the voltage or the current of the constant voltage power supply so as to realize the control and adjustment of the power-on voltage and the power-on duration of the solar cell; the imaging device is electrically connected with the controller and used for photographing the solar cell.
Further, the imaging device is an infrared camera.
Furthermore, the conductive part is connected with the negative electrode of the constant voltage power supply, and the test probe row is connected with the positive electrode of the constant voltage power supply; or the conductive part is connected with the positive electrode of the constant voltage power supply, and the test probe row is connected with the negative electrode of the constant voltage power supply.
Further, the electrifying voltage range is 0-25V, and the electrifying time period range is 0-60 seconds.
Further, the detection device also comprises a display component for displaying the solar cell image, and the output end of the controller is connected with the input end of the display component.
Further, the imaging device is also used for outputting a digital signal of the solar cell image, and the controller comprises a data conversion module which is used for converting the digital signal into a data format which can be displayed by the display component.
Furthermore, the test probe rows are arranged in a plurality, and the test probe rows correspond to the main grid lines one to one.
Furthermore, the number of the test probe rows is the same as that of the solar cell main grid lines to be tested.
Further, a plurality of inner side walls of the darkroom are coated with black metal materials.
Further, the conductive part is a platform made of a conductive metal material.
The utility model provides a beneficial effect that technical scheme brought as follows:
the utility model provides a check out test set for solar cell after PID performance detects, through the solar cell behind this equipment test PID, be convenient for follow-up through photo discernment solar cell electric leakage position, electric leakage type and electric leakage size, and then judge the true reason that PID exceeds standard problem. The detection equipment is simple and quick to operate and convenient to popularize and use on a large scale.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a detection device for a solar cell after PID performance detection provided by an embodiment of the present invention.
Wherein the reference numerals include: 1-constant voltage power supply, 2-controller, 3-darkroom, 4-test probe row, 5-imaging device, 6-insulating part, 7-conductive part, 8-solar cell and 9-display component.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
The utility model discloses an embodiment provides a check out test set for solar cell after PID performance detects, and concrete structure refers to FIG. 1, and it includes constant voltage power supply 1, controller 2, darkroom 3 and sets up test platform, test probe row 4 and imaging device 5 in the darkroom 3, the inside wall of darkroom 3 is black, a plurality of inside walls of darkroom all coat black metal material, and when solar cell tests, solar cell, test platform, survey probe row, imaging device all are in the dark surrounds, and the effect of darkroom provides the dark surrounds for solar cell test procedure, avoids external light to cause the influence to its test procedure.
The testing platform comprises an insulating part 6 and a conductive part 7, wherein the conductive part 7 is arranged on the insulating part 6, and the insulating part 6 (non-conductive part) of the testing platform has a supporting function, so that the testing platform can be placed on the ground or other supporting surfaces conveniently, and the solar cell can be stably detected. The conductive part 7 is a platform made of conductive metal, preferably a copper plate, the main function of the conductive part of the test platform is as a negative electrode for providing reverse voltage for the solar cell, and the conductive part of the test platform is connected with the negative electrode of the constant voltage power supply through a lead.
The solar cell 8 to be tested is placed on the conductive part 7 of the test platform, the conductive part 7 is connected with one end of the constant voltage power supply 1, and the test probe bank 4 is connected with the other end of the constant voltage power supply 1. During testing, the testing probe row is connected with the anode of the constant voltage power supply, after the multiple testing probe rows correspond to the main grid lines of the solar cells 8, the multiple testing probe rows are pressed down on the corresponding main grid lines of the solar cells 8, the conductive part 7 has conductivity, and the constant voltage power supply, the conductive part of the testing platform, the testing probe rows and the solar cells 8 to be tested are connected through conducting wires to form a closed loop.
The test probe rows are arranged in a plurality of numbers, the test probe rows correspond to the main grid lines one by one, and the number of the test probe rows 4 and the number of the main grid lines of the solar cell 8 to be tested can be the same or different, preferably the same. Each row of test needles 4 has a plurality of probes thereon.
The constant voltage power supply 1 is used for supplying power to the solar battery 8, and the controller 2 is used for adjusting the voltage or the current of the constant voltage power supply 1 so as to control and adjust the voltage and the electrifying time of the solar battery 8, namely, the constant voltage power supply provides a variable constant voltage within the range of 0-25V for the solar battery 8 to be tested, and the electrifying time can be changed within the range of 0-60S, for example, for one type of solar battery, the voltage is preferably 18V and the electrifying time is 20S during testing. The electrified voltage and the electrified time length of different types of batteries are different and can be selected according to actual conditions.
Further, the time length of the power-on can be timed by a timer, and the controller 2 controls the time length of the power-on of the constant voltage power supply 1 to the solar battery 8 according to the timing result of the timer.
The imaging device 5 is electrically connected with the controller 2, the imaging device 5 is used for photographing the solar cell 8, the imaging device 5 is arranged above the solar cell 8 to be measured, and the imaging device 5 is preferably an infrared camera.
The detection device further comprises the display component 9 (such as a computer) for displaying the image of the solar cell 8, and the output end of the controller 2 is connected with the input end of the display component 9. The imaging device 5 is further configured to output a digital signal of an image of the solar cell 8, and the controller 2 includes a data conversion module configured to convert the digital signal into a data format that can be displayed by the display component 9.
When the voltage is supplied to the solar cell test, the infrared camera takes an infrared picture (image) of the solar cell to be tested, converts the infrared picture (image) into a digital signal, and transmits the digital signal to the display assembly 9 through the controller, wherein the display assembly 9 is used for displaying the infrared picture (image) of the solar cell.
The application provides a check out test set for solar cell after PID performance detects, the solar cell circular telegram of constant voltage power supply to the examination of awaiting measuring is reverse bias voltage circular telegram, promptly solar cell 8's positive pole is connected with constant voltage power supply 1's negative pole, solar cell 8's negative pole is connected with constant voltage power supply 1's positive pole. Under the action of external reverse voltage, the internal reverse current of the solar cell is enhanced, and the current is increased at the place with poor insulation. The presence of the current causes the battery itself to heat, thereby emitting infrared rays. The greater the current, the stronger the infrared intensity will be; the smaller the current, the weaker the infrared intensity will be. At the moment, the solar cell is photographed by the infrared camera, and the infrared intensities of different positions and intensities are represented. After being processed by the software, the solar cell pictures taken by the infrared camera are displayed by the display component 9.
The position, type and magnitude of leakage of the solar cell can be qualitatively determined by the picture displayed by the display module 9 (qualitative determination can be performed by the brightness of the picture). Experiments show that the reasons of electric leakage at different positions and different types of electric leakage are different, so that the main reasons causing the PID problem of the solar cell can be given through the positions and the types of the electric leakage.
In order to obtain a stable and clear picture, the magnitude and duration of external reverse voltage need to be adjusted, the magnitude and duration of reverse voltage needed by different types of batteries are different, and the magnitude and duration of reverse voltage need to be selected according to experimental experience.
Aiming at the P-type battery, the conductive part 7 is connected with the negative electrode of the constant voltage power supply 1, and the measuring probe bank 4 is connected with the positive electrode of the constant voltage power supply 1; for an N-type battery, the conductive part 7 is connected with the positive electrode of the constant voltage power supply 1, and the test probe bank 4 is connected with the negative electrode of the constant voltage power supply 1.
The utility model provides a check out test set for solar cell after PID performance detects, through the solar cell behind this equipment test PID, be convenient for follow-up through photo discernment solar cell electric leakage position, electric leakage type and electric leakage size, and then judge the true reason that PID exceeds standard problem. The detection equipment is simple and quick to operate and convenient to popularize and use on a large scale.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The detection equipment for the solar cell after PID performance detection is characterized by comprising a constant voltage power supply (1), a controller (2), a darkroom (3), a test platform arranged in the darkroom (3), a probe test pin row (4) and an imaging device (5), wherein the test platform comprises an insulating part (6) and a conductive part (7) arranged on the insulating part (6), the solar cell (8) to be detected is placed on the conductive part (7) of the test platform, the probe test pin row (4) is used for being pressed on a main grid line of the solar cell (8) during testing, the conductive part (7) is connected with one end of the constant voltage power supply (1), and the probe test pin row (4) is connected with the other end of the constant voltage power supply (1);
the positive electrode of the solar cell (8) is connected with the negative electrode of the constant voltage power supply (1), the negative electrode of the solar cell (8) is connected with the positive electrode of the constant voltage power supply (1), and the constant voltage power supply (1) is used for supplying power to the solar cell (8); the controller (2) is used for adjusting the voltage or the current of the constant voltage power supply (1) so as to realize the control and adjustment of the electrifying voltage and the electrifying time of the solar cell (8);
the imaging device (5) is electrically connected with the controller (2), and the imaging device (5) is used for photographing the solar battery (8).
2. The detection apparatus for post-PID performance detection solar cell according to claim 1, characterized in that the imaging device (5) is an infrared camera.
3. The apparatus for inspecting solar cell after PID performance inspection as claimed in claim 1, wherein the conductive part (7) is connected to the negative electrode of the constant voltage power supply (1), and the inspection probe bank (4) is connected to the positive electrode of the constant voltage power supply (1); or the conductive part (7) is connected with the positive electrode of the constant voltage power supply (1), and the test probe row (4) is connected with the negative electrode of the constant voltage power supply (1).
4. The device for detecting the solar cell after the PID performance detection is in accordance with claim 1, wherein the electrifying voltage is in a range of 0-25V, and the electrifying time period is in a range of 0-60 seconds.
5. The device for detecting the solar cell after PID performance detection according to claim 1, characterized in that the device further comprises a display component (9) for displaying the image of the solar cell (8), and the output end of the controller (2) is connected with the input end of the display component (9).
6. The detection apparatus for solar cell after PID performance detection according to claim 5, wherein the imaging device (5) is further configured to output digital signals of solar cell (8) image, and the controller (2) comprises a data conversion module configured to convert the digital signals into a data format that can be displayed by the display component (9).
7. The apparatus of claim 1, wherein the plurality of test probe banks are arranged, and the test probe banks correspond to the main grid lines one to one.
8. The device for detecting solar cells after PID performance detection according to claim 7, wherein the number of the test probe rows (4) is the same as the number of the main grid lines of the solar cells (8) to be detected.
9. The detection apparatus for solar cell after PID performance detection according to claim 1, wherein a plurality of inner side walls of the darkroom (3) are coated with black metal material.
10. The apparatus of claim 1, wherein the conductive part is a platform made of conductive metal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022065806.2U CN212783490U (en) | 2020-09-18 | 2020-09-18 | Detection device for solar cell after PID performance detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022065806.2U CN212783490U (en) | 2020-09-18 | 2020-09-18 | Detection device for solar cell after PID performance detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731865A (en) * | 2021-09-03 | 2021-12-03 | 晶澳（扬州）太阳能科技有限公司 | Solar cell sorting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731865A (en) * | 2021-09-03 | 2021-12-03 | 晶澳（扬州）太阳能科技有限公司 | Solar cell sorting method |
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