CN217522800U - Testing device for photovoltaic hot spot test - Google Patents
Testing device for photovoltaic hot spot test Download PDFInfo
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- CN217522800U CN217522800U CN202221426350.0U CN202221426350U CN217522800U CN 217522800 U CN217522800 U CN 217522800U CN 202221426350 U CN202221426350 U CN 202221426350U CN 217522800 U CN217522800 U CN 217522800U
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 230000003028 elevating effect Effects 0.000 abstract description 6
- 238000010998 test method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000005286 illumination Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000012827 research and development Methods 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
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Abstract
The utility model relates to a testing arrangement for photovoltaic hot spot test, it includes shell, base, support, elevating gear, illuminator, step motor, temperature control device and controller, set up the shell on the base, the middle part on the base is equipped with the support for supporting and placing the test sample, the top surface of shell runs through an elevating gear, step motor is connected at the top of elevating gear, and the bottom stretches into in the shell and connects an illuminator, one side of shell still is equipped with the controller; the test sample comprises a packaging shell, a battery piece is arranged in the packaging shell, batteries with different leakage currents are selected by the battery piece through a battery end, bus bars of the positive electrode and the negative electrode of the batteries are led out, and the battery piece is connected with a controller which receives a current signal of the test sample. The utility model discloses test method is simple, and testing arrangement is simple effective.
Description
Technical Field
The utility model relates to a solar cell makes technical field, especially relates to a testing arrangement for photovoltaic hot spot test.
Background
In a photovoltaic power generation system, due to the influence of factors such as natural conditions and environmental pollution, the surface of part of power generation components, namely photovoltaic components, is shielded, the shielded components are converted into loads from power generation sources in a series circuit, the electric energy generated by the rest of normally working photovoltaic components is absorbed, and the absorbed electric energy is dissipated on the shielded components in the form of heat energy, so that a local heat source is formed in the photovoltaic power generation system, which is generally called hot spots and is the most main reason for generating the hot spots phenomenon, the hot spots phenomenon can reduce the output power of the photovoltaic components and accelerate the aging and fading of the components, so that the power generated by the photovoltaic power generation system is gradually attenuated, and the hot spots need to be detected in order to avoid the energy generated by the normally working photovoltaic components being consumed by the shielded components.
IEC61215 is one of the most common photovoltaic test standards used internationally at present, wherein the hot spot endurance test on MQT09 in the standard is one of the most critical indicators for measuring the reliability of components. The existing test method comprises the following steps: the method comprises the following steps that firstly, large-scale solar simulator equipment is needed, the size of the solar simulator is required to be continuously upgraded along with the increasing size of a component, the equipment price is high, and the energy consumption is high; secondly, a test component is manufactured, the sample preparation cost is high, and if a newly developed version is met, a corresponding production line does not exist, and a sample cannot be manufactured; selecting battery pieces, selecting percentage, shielding the selected battery pieces from solarization and monitoring the highest temperature of the hot spots according to the requirements in IEC61215 MQT09 hot spot durability experiment clauses in the testing process; the testing process is complex, wherein each battery piece needs to be shielded in sequence through selecting the battery pieces, an IV curve is measured through flashing of a power tester, 3 pieces with the largest leakage current and 1 piece with the smallest leakage current are selected through sorting data, and then hot spot solarization is carried out on the selected battery pieces in a shielding mode according to different percentages. The whole process consumes a great deal of manpower and material resources.
From the process of research and development of new products to the process of mass production of components, a photovoltaic enterprise carries out a large number of hot spot tests of the components every year, and failures in the hot spot durability test process are rare; therefore, a simple, fast and reliable test method is needed to verify the hot spot reliability of the component.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the aforesaid not enough, provide a testing arrangement for photovoltaic hot spot test, practice thrift the test cost, the system appearance is simple, and the flexibility is high, can adjust voltage simulation different battery piece quantity at will, improves efficiency of software testing.
The purpose of the utility model is realized like this:
a testing device for photovoltaic hot spot testing comprises a shell, a base, a support, a lifting device, a light lamp, a stepping motor, a temperature control device and a controller, wherein the shell is arranged on the base; a controller is also arranged on one side of the shell; the test sample comprises a packaging shell, a battery piece is arranged in the packaging shell, batteries with different leakage currents are selected by the battery piece through a battery end, bus bars of the positive electrode and the negative electrode of the batteries are led out, and a controller receives a current signal of the test sample.
A testing device for photovoltaic hot spot testing is provided, wherein a temperature control device is further arranged in a shell.
A testing arrangement for photovoltaic hot spot test, temperature control device sets up on the base.
A testing device for photovoltaic hot spot testing is characterized in that a controller is connected with a thermocouple to monitor the temperature of a hot spot.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model makes a single battery small sample, and simulates the reverse voltage in the component circuit by the external voltage, so that the method is simpler and more effective; the height of the light source is controlled, the irradiance can be adjusted, and the magnitude of the photo-generated current can be controlled by matching the shielding area of the battery piece; the voltage can be controlled, and the aim of switching components with different cell numbers is fulfilled; the testing method is simple, and the testing device is simple and effective.
The utility model discloses adopt the subassembly to test among the prior art, the utility model discloses a test sample replaces the subassembly, practices thrift the test cost.
Drawings
Fig. 1 is a schematic structural diagram of the testing device of the present invention.
Fig. 2 is a top view of a test specimen according to the present invention.
Wherein:
the device comprises a shell 1, a base 2, a support 3, a test sample 4, a battery piece 41, a bus bar 42, a lifting device 5, a lighting lamp 6, a stepping motor 7, a temperature control device 8 and a controller 9.
Detailed Description
For better understanding of the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present invention, but only the embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
Example 1:
referring to fig. 1-2, the utility model relates to a testing arrangement for photovoltaic hot spot test, it includes shell 1, base 2, support 3, elevating gear 5, light 6, step motor 7, temperature control device 8 and controller 9, set up shell 1 on the base 2, the middle part on the base 2 is equipped with support 3 for support places test sample 4, elevating gear 5 is run through to the top surface of shell 1, step motor 7 is connected at elevating gear 5's top, connects light 6 in the shell 1 is stretched into to the bottom, step motor 7 fixes on the outer wall of shell 1.
A temperature control device 8 is further arranged in the shell 1, and the temperature control device 8 is arranged on the base 2.
A controller 9 is further arranged on one side of the shell 1, and the controller 9 receives a current signal of the test sample 4.
The test sample 4 comprises a packaging shell, a battery piece 41 is arranged in the packaging shell, the battery piece 41 selects batteries with different leakage currents through a battery end, leads out bus bars 42 of the positive electrode and the negative electrode of the battery piece, and is connected with the controller 9.
The controller 9 can be connected with a thermocouple to monitor the temperature of the hot spot, can also control the illumination time, automatically stops the experiment after the set illumination time is reached or the temperature of the hot spot is stable, and stores the test data.
The utility model relates to a test method for photovoltaic hot spot test, it includes following content:
step one, preparing a test sample
Selecting batteries with different leakage currents through the battery ends, packaging the batteries into a test sample, and leading out positive and negative bus bars of the batteries;
step two,
The lifting of the lifting device is controlled by a stepping motor, so that the height of the lighting lamp is adjusted;
step three,
The test sample is shielded by controlling the shielding sheet, and the controller receives a signal;
step four,
Controlling the test sample to generate a photo-generated current I test Stopping adjusting the height when the height is equal to Imp, wherein Imp is the current of the maximum working point;
step five,
According to the type of the test sample, calculating the number of battery pieces controlled by a single bypass diode, and calculating the voltage V test Inputting the voltage into a controller to determine the external reverse voltage of the test sample, and the external reverse voltage V test =（V Sheet ）*（S-1）；
V Sheet Is the maximum power point voltage of a single cell;
s is the number of battery pieces controlled by a single bypass diode;
step six,
In the test process, the environmental temperature is controlled by the temperature control device and the temperature I is controlled test And V test The two key factors influencing the hot spot temperature can simulate the IEC61215 MQT09 component hot spot test;
step seven,
The controller can be connected with the thermocouple to monitor the temperature of the hot spot, can also control the illumination time, and automatically stops the experiment and stores the test data after the set illumination time is reached or the temperature of the hot spot is stable.
The working principle is as follows:
the utility model discloses a single battery encapsulation, through illumination and reverse voltage application, simulate IEC61215 hot spot test condition. And the voltage and the light intensity can be adjusted at will to simulate the hot spot condition of components with different formats. Compared with the prior art, the module is adopted in the standard IEC61215 MOT 09 to carry out hot spot test, and the hot spot test is carried out by shielding the battery in the solarization process, so that the small sample is used for replacing the module, and the cost is saved; the voltage can be controlled, and the aim of switching components with different cell numbers is fulfilled; the height of the light source is controlled to achieve the purpose of different irradiance; the utility model discloses be more applicable to the product research and development stage, the production line production subassembly test sample that does not have the correspondence is convenient for to fumbling of hot spot temperature range.
The above is only a specific application example of the present invention, and does not set any limit to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. A testing arrangement for photovoltaic hot spot test which characterized in that: the device comprises a shell (1), a base (2), a support (3), a lifting device (5), a lighting lamp (6), a stepping motor (7), a temperature control device (8) and a controller (9), wherein the shell (1) is arranged on the base (2), the support (3) is arranged in the middle of the base (2) and used for supporting and placing a test sample (4), the lifting device (5) penetrates through the top surface of the shell (1), the stepping motor (7) is connected to the top of the lifting device (5), the bottom of the lifting device (5) extends into the shell (1) and is connected with the lighting lamp (6), and the stepping motor (7) is fixed on the outer wall of the shell (1); a controller (9) is further arranged on one side of the shell (1); the test sample (4) comprises a packaging shell, a battery piece (41) is arranged in the packaging shell, batteries with different leakage currents are selected by the battery piece (41) through battery ends, bus bars (42) of the positive electrode and the negative electrode of the batteries are led out, and a controller (9) receives current signals of the test sample (4).
2. The test device for photovoltaic hot spot test according to claim 1, characterized in that: a temperature control device (8) is further arranged in the shell (1).
3. A test apparatus for photovoltaic hot spot testing according to claim 2, characterized in that: the temperature control device (8) is arranged on the base (2).
4. The testing device for photovoltaic hot spot testing according to claim 1, wherein: the controller (9) is connected with a thermocouple to monitor the temperature of the hot spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221426350.0U CN217522800U (en) | 2022-06-09 | 2022-06-09 | Testing device for photovoltaic hot spot test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221426350.0U CN217522800U (en) | 2022-06-09 | 2022-06-09 | Testing device for photovoltaic hot spot test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217522800U true CN217522800U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221426350.0U Active CN217522800U (en) | 2022-06-09 | 2022-06-09 | Testing device for photovoltaic hot spot test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217522800U (en) |
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2022
- 2022-06-09 CN CN202221426350.0U patent/CN217522800U/en active Active
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Address after: No. 188, Huachang Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: JIANGSU AKCOME ENERGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: Zhejiang Aikang New Energy Technology Co.,Ltd. Address before: No. 188, Huachang Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: JIANGSU AKCOME ENERGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: JIANGYIN AKCOME SCIENCE AND TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |