CN212012578U - Shielding device for hot spot test piece selection - Google Patents
Shielding device for hot spot test piece selection Download PDFInfo
- Publication number
- CN212012578U CN212012578U CN202020185833.0U CN202020185833U CN212012578U CN 212012578 U CN212012578 U CN 212012578U CN 202020185833 U CN202020185833 U CN 202020185833U CN 212012578 U CN212012578 U CN 212012578U
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- shielding
- shielding piece
- push rod
- hot spot
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
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- 230000031700 light absorption Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims 2
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 239000002390 adhesive tape Substances 0.000 abstract description 2
- 238000004891 communication Methods 0.000 abstract description 2
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- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- 239000005341 toughened glass Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a shelter from device for experimental selection piece of hot spot, a serial communication port, include: the frame is fixed on the photovoltaic assembly; a plurality of push rod tracks arranged in parallel; the shielding piece is used for shielding a cell to be detected in the photovoltaic module, the outer side of the shielding piece is coated with a black light absorption material, and the inner side of the shielding piece is provided with an elastomer; the adjustable push rod is used for enabling the shielding piece to move along the push rod track to shield the corresponding battery piece to be detected; and the positioning device is used for enabling the shielding piece to just shield a certain battery piece to be detected under the action of the adjustable push rod. The utility model has the advantages that the light leakage prevention design of the positioning device, the push-pull device and the shielding piece of the track significantly reduces the time for selecting the hot spot test, is convenient and accurate to use, and improves the test efficiency; the mode that the shielding piece is fixed by using adhesive tapes to stick and stick in the prior art is replaced by the attaching design of the shielding piece, so that the test surface cannot leave adhesive marks to have uncertain influence on subsequent tests.
Description
Technical Field
The utility model relates to a shelter from device for experimental selection piece of hot spot belongs to solar cell technical field.
Background
The photovoltaic module is characterized in that a single solar cell cannot be directly used as a power supply, a plurality of single cells are connected in series, in parallel and tightly packaged into a module to be used as the power supply, and the photovoltaic module is composed of a high-efficiency single crystal/polycrystalline solar cell, low-iron ultra-white suede toughened glass, EVA (ethylene vinyl acetate), TPT (thermoplastic vulcanizate), interconnection bars, bus bars, a back plate and an aluminum alloy frame.
The photovoltaic module is basically composed of single crystal silicon solar cells in a series-parallel mode, in the using process, when the solar cells in the photovoltaic module are not matched in electrical performance or a single solar cell is shielded by leaves or other opaque objects, the output current of the photovoltaic module is reduced, so that two ends of the shielded single cell are in reverse bias, the hot spot problem of local high temperature is generated, the single solar cell or packaging materials can be damaged due to long-time accumulation of heat, and the permanent damage of the photovoltaic module can be possibly caused. The hot spot effect is very common in the practical application of the solar cell, and the hot spot effect seriously affects the performance and the service life of the solar cell and has a great risk, such as fire, equipment burning loss and the like. The photovoltaic modules are basically outdoor working environments, are easily shielded by natural environments such as plants, animals, sand and dust and cause hot spot effect, and have great harm to the power generation efficiency and safe operation of a power station. Therefore, the importance of the hot spot durability effect test of the photovoltaic module is obvious.
The Hot spot Test is to determine the capability of the photovoltaic module to bear the Hot spot heating effect according to IEC61215-2-2016-03MQT 4.9Hot-Sopt Endurance Test, and the effect can cause the phenomena of module welding melting or packaging degradation and the like. Such defects can be caused by component cell mismatch or cracking, internal connection failure, local shading, or fouling.
According to standard requirements, shielding and selecting are needed for all battery pieces of a whole assembly in the piece selecting process, namely, testing is carried out after 100% shielding is carried out on each battery piece; after the selection is finished, the selected 4 batteries are required to be subjected to a test in which the shielding area is decreased from 100% to no shielding at all by 10%, and the worst hot spot condition of the 4 batteries is selected. The assembly specification calculation of 72 pieces requires a total of 110 tests to complete the piece selection and worst condition determination process of the hot spot test.
The standard provides the requirement of shielding one by one, and according to the test of the same type of laboratories in the prior art, the shielding is carried out by manually pasting shielding sheets.
The existing shielding mode mainly has the following two defects:
one is time consuming and labor intensive. The chip selection and worst condition determination of the hot spot test of one block of components are equivalent to the power test of the rest blocks of similar components of the test 110. The shielding exposure time (6-30 hours) of the subsequent 4 batteries is not calculated, and the single-chip selection work can be finished only by 1.5-2 working days.
And secondly, the influence of the glue marks on the accuracy of subsequent tests. The glue marks can affect subsequent tests such as IV, insulation, ultraviolet, wet leakage, appearance and other test items.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the adhesive trace shielded by the adhesive paste pollutes the surface of the battery piece, and the accuracy of a subsequent test result is improved.
In order to solve the technical problem, the utility model provides a shelter from device for experimental selection piece of hot spot, a serial communication port, include:
the frame is fixed on the photovoltaic assembly;
the width between adjacent push rod tracks is smaller than the gap distance between the battery strings in the photovoltaic module, so that the light intensity of the batteries is not influenced;
the shielding piece is used for shielding a battery piece to be detected in the photovoltaic module, the outer side of the shielding piece is coated with a black light absorption material, and the inner side of the shielding piece is provided with an elastomer, so that the shielding piece can be tightly attached to the surface of the battery to be detected and does not leak light;
the adjustable push rod is used for enabling the shielding piece to move along the push rod track to shield the corresponding battery piece to be detected, and the length of the adjustable push rod is adjustable, so that the adjustable push rod is convenient to use in a limited space;
and the positioning device is used for enabling the shielding piece to just shield a certain battery piece to be detected under the action of the adjustable push rod.
Preferably, the positioning device comprises an inserting piece movably connected with the shielding piece, and the inserting piece is matched with clamping grooves distributed along the push rod track and positioned on the push rod track at the junction of the adjacent battery pieces.
The utility model discloses replaced when carrying out the experiment according to IEC61215-2-2016-03MQT 4.9Hot-Sopt Endurance Test's requirement, the piece selection process need glue the Test mode that the card sheltered from to every battery piece one by one through the manual work, has improved efficiency of software testing. The utility model has the advantages that the light leakage prevention design of the positioning device, the push-pull device and the shielding piece of the track significantly reduces the time for selecting the hot spot test, is convenient and accurate to use, and improves the test efficiency; the mode that the shielding piece is fixed by using adhesive tapes to stick and stick in the prior art is replaced by the attaching design of the shielding piece, so that the test surface cannot leave adhesive marks to have uncertain influence on subsequent tests. Simultaneously, the device can also be used for the metrological verification work of the light source homogeneity of similar equipment, can be fixed in the push rod end with the reference battery piece, carries out the light intensity collection work of different battery piece positions, improves work efficiency.
Compared with the prior art, the utility model provides a beneficial effect lies in:
1. through the matching with the component to be tested, the battery piece can be accurately shielded by a person only by pushing and pulling the component bracket and the positioning function of the track;
2. the single battery of the assembly can be completely shielded, and the shielding proportion can be adjusted according to standard requirements;
3. when shielding, the shielding piece can be tightly attached to the surface of the component glass, so that light leakage is avoided.
Drawings
FIG. 1 is a schematic view of a shielding device for hot spot test wafer selection provided by the present invention;
FIG. 2 is a schematic view of the push rod track and the shielding plate;
FIG. 3 is a schematic view of the shielding plate and the adjustable pushing rod.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1-3, for the utility model provides a shelter from device for hot spot test selection piece, it includes:
the frame 1 is fixed on the photovoltaic module;
the width between every two adjacent push rod tracks 2 is smaller than the gap distance between the cell strings in the photovoltaic module;
the shielding piece 4 is used for shielding a cell to be detected in the photovoltaic module, the outer side of the shielding piece is coated with a black light absorption material, and the inner side of the shielding piece is provided with an elastomer;
the adjustable push rod 5 is used for enabling the shielding piece 4 to move along the push rod track 2 to shield the corresponding battery piece to be detected; during testing, the test paper is in a vertical folding state, so that a light source is prevented from being shielded;
The use flow is as follows:
firstly, selecting a frame 1 with a proper size according to the specification of the component, fixing the frame 1 on the surface of the photovoltaic component, and adjusting the position of a push rod track 2 to ensure that the effective area of a cell to be tested is not shielded;
secondly, frame 1 is fixed in the test support, selects shielding piece 4 of suitable size, inserts in push rod track 2, ensures that shielding piece 4 and battery piece surface paste tightly, and no light leak. Then the battery is connected with one end of an adjustable push rod 5 and pushed into the farthest end of the light receiving surface; and determining the position, and inserting the inserting sheet into the corresponding clamping groove 6 for limiting.
And thirdly, shielding each cell to be tested of the photovoltaic assembly one by one according to the requirements of standard test to carry out power test, pulling the shielding piece to the next cell after each test is finished, and adjusting the length of the pull rod according to the laboratory space. And after the testing of one row of battery pieces of the assembly is finished, switching to the next row of battery pieces to carry out measurement according to the steps until the IV testing that all the battery pieces are completely shielded is finished, selecting 4 battery pieces to be tested according to the testing result and the standard, recording the positions of the 4 battery pieces, and finishing the piece selection process.
And finally, selecting the worst hot spot condition of the selected 4 battery pieces, namely performing an IV test on the selected battery pieces under the condition of completely shielding the selected battery pieces to completely not shielding the selected battery pieces, wherein the shielding surface is decreased by 10% each time. In the step, IV tests of 4 battery pieces can be sequentially completed by replacing shielding pieces with different shielding areas and pushing the shielding pieces to a recording position by using a push rod, and the shielding areas under the worst hot spot condition are recorded according to the test standard requirements. Therefore, the work of selecting the hot spots of the components and determining and testing the worst conditions is completed, and then the insolation process is carried out.
Claims (2)
1. A sheltering device for hot spot test selection is characterized by comprising:
the frame (1) is fixed on the photovoltaic assembly;
the width between the adjacent push rod tracks (2) is smaller than the gap distance between the battery strings in the photovoltaic module;
the shielding piece (4) is used for shielding a cell to be detected in the photovoltaic component, the outer side of the shielding piece is coated with a black light absorption material, and the inner side of the shielding piece is provided with an elastomer;
the adjustable push rod (5) is used for enabling the shielding piece (4) to move along the push rod track (2) to shield the corresponding battery piece to be detected;
and the positioning device (3) is used for enabling the shielding piece (4) to just shield a certain battery piece to be detected under the action of the adjustable push rod (5).
2. A screening device for hot spot test section according to claim 1, wherein the positioning means (3) comprises an insert sheet movably connected to the screening sheet (4) and cooperating with a slot (6) distributed along the pusher rail (2) on the pusher rail (2) at the junction of adjacent cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020185833.0U CN212012578U (en) | 2020-02-18 | 2020-02-18 | Shielding device for hot spot test piece selection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020185833.0U CN212012578U (en) | 2020-02-18 | 2020-02-18 | Shielding device for hot spot test piece selection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212012578U true CN212012578U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020185833.0U Active CN212012578U (en) | 2020-02-18 | 2020-02-18 | Shielding device for hot spot test piece selection |
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| Country | Link |
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| CN (1) | CN212012578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117665335A (en) * | 2023-12-08 | 2024-03-08 | 广东诺帝恩智控机器人有限公司 | Testing system and method for hand-operated pulse generator |
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2020
- 2020-02-18 CN CN202020185833.0U patent/CN212012578U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117665335A (en) * | 2023-12-08 | 2024-03-08 | 广东诺帝恩智控机器人有限公司 | Testing system and method for hand-operated pulse generator |
| CN117665335B (en) * | 2023-12-08 | 2024-05-14 | 广东诺帝恩智控机器人有限公司 | Testing system and method for hand-operated pulse generator |
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