CN111106798A - Solar cell module electrical property test lead device - Google Patents
Solar cell module electrical property test lead device Download PDFInfo
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- CN111106798A CN111106798A CN202010135317.1A CN202010135317A CN111106798A CN 111106798 A CN111106798 A CN 111106798A CN 202010135317 A CN202010135317 A CN 202010135317A CN 111106798 A CN111106798 A CN 111106798A
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
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- 238000007599 discharging Methods 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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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)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model provides a solar module electrical property test lead device, belongs to solar module electrical property test field, its characterized in that: comprises a piston module and a preset module; the piston module comprises a bracket and an elastic conductive piece which can reciprocate along a fixed track; the elastic conductive pieces are insulated from each other and arranged on the bracket; the preset module comprises a joint and a base; the top of the base is provided with a fixing device; the bottom end of the base is provided with a conductive contact; the conductive contacts are electrically connected to the aforementioned contacts. The lead between the solar cell module and the electrical property testing device is improved, and the automatic testing of the electrical property testing process is realized through the preset module and the piston module, so that the testing efficiency is obviously improved, the labor cost is reduced, and the bad experience that an operator contracts in a narrow space for a long time is avoided; meanwhile, by improving the structure of the conductive core in the connector, on the basis of compatibly matching with the MC4 series connector on the solar cell module tail cable, the inconvenience of the test is avoided, and the test is more accurate.
Description
Technical Field
The invention belongs to the field of electrical performance test of solar cell modules, and particularly relates to a lead device for electrical performance test of a solar cell module.
Background
The solar cell is a semiconductor slice which can generate electricity through photovoltaic effect, one surface of the slice is a positive electrode, the other surface of the slice is a negative electrode, and a conductive metal grid or a metal coating is arranged on the positive electrode surface and the negative electrode surface to collect current and voltage; a solar cell module is generally formed by packaging a plurality of solar cells after connecting in series or parallel; generally, two tail cables are provided, one is a positive electrode, and the other is a negative electrode; most pigtail cables employ connectors in the form of MC4 or MC4, which are made in both male and female type and have only one conductive core inside.
The electrical property test of the solar cell is a process of irradiating the surface of the solar cell by light, simultaneously acquiring and processing four electrical signals of I +, I-, V + and V-of the solar cell, and obtaining parameters of the solar cell to be tested by calculation according to information such as illumination conditions, temperature, specification and size of the solar cell and the like; when the solar cell module leaves a factory, electrical property testing is required so as to facilitate quality inspection, grading and labeling of relevant parameters; the leads of the electrical performance testing apparatus, in order to mate with the pigtail connectors of the solar module, also employ two MC4 tether connectors, with the positive connector conducting the I + and V + signals and the negative connector conducting the I-and V-signals.
The electrical property test process in the prior art is as follows: feeding the solar cell module to a preset position, manually butting a tail cable connector of the solar cell module with a lead connector of an electrical property testing device, testing the electrical property, manually pulling the tail cable connector, and discharging the solar cell module; the steps in the process are performed in series, the connector inserting and pulling link is used for about 10s, the time of electrical performance testing is remarkably prolonged, at least one person needs to curl in a space with the height of less than 1m on the backlight side of the solar cell module to perform connector inserting and pulling operation, and the operation is performed continuously for about 2500 times every day on a production line, so that the experience of operators is seriously reduced, and the labor cost is increased; in the prior art, the male and female MC4 series connectors at the tail ends of the leads of the electrical performance testing device are only provided with one conductive core in each connector and are responsible for the conduction of I, V electrical signals, and one conductive core conducts I, V electrical signals at the same time, so that inaccurate measurement is caused. After the solar cell generates electricity, current starts from the anode of the solar cell (a voltmeter is regarded as open circuit), passes through the anode conductive core, the sampling resistor, the variable electronic load and the cathode conductive core and then flows into the cathode of the solar cell; because contact resistance exists between the two butted conductive cores, voltage drop exists at the position, and the result measured by a voltmeter of the solar battery is lower than the terminal voltage of the solar battery; along with the increase of the plugging times of the connector, the contact resistance of the conductive core can be rapidly increased, which has obvious influence on the electrical performance test of the precise solar cell.
Disclosure of Invention
The invention aims to solve the problems and provides a solar cell module electrical property testing lead device which can improve the connection efficiency of a solar cell module and an electrical property testing device.
The invention relates to a solar cell module electrical property test lead device, which comprises a piston module and a preset module; the piston module comprises a bracket and an elastic conducting piece which can reciprocate along a fixed track; the elastic conducting pieces comprise at least four groups; the elastic conductive pieces are insulated from each other and arranged on the bracket; the preset module comprises a joint and a base; the base is provided with a fixing device; the bottom end of the base is provided with at least four groups of conductive contacts which are insulated from each other; the conductive contact is electrically connected with the joint. The preset module is arranged on the solar cell module to be tested, and the piston module reciprocates along a fixed track to drive the elastic conductive piece arranged on the support to be electrically connected and disconnected with the conductive contact, so that the solar cell module is connected and disconnected with the solar cell module electrical property testing device.
According to the solar cell module electrical property test lead device, the support is arranged at the top end of a supporting mechanism; a sliding block and a driving device thereof are arranged below the supporting mechanism; the supporting mechanism is arranged on the sliding block. The supporting mechanism is driven by the driving device to realize reciprocating operation through the sliding block.
According to the solar cell module electrical property test lead device, two independent conductive cores are arranged in the connector; each of the conductive cores is electrically connected to a set of the aforementioned conductive contacts.
The invention relates to a solar cell module electrical property test lead device, which comprises two connectors, namely a male connector and a female connector; the conductive contacts are provided with four groups; four groups of elastic conductive pieces are arranged.
According to the solar cell module electrical property test lead device, the conductive contacts are arranged at the bottom end of the base at equal intervals; the elastic conductive pieces are arranged on the bracket at equal intervals.
The solar cell module electrical property test lead device is characterized in that the fixing device is an air sucking disc or an elastic clamp. And fixing the preset module on the solar cell module to be tested through an air sucking disc or an elastic clamp.
The fixing device is a wedge which can be embedded into the flanging of the aluminum frame of the solar cell module, so that the preset module is fixed on the solar cell module to be tested.
According to the solar cell module electrical property test lead device, two conductive cores arranged in the male connector are respectively a connector test probe and a metal sleeve wrapped on the connector test probe; and an insulating filler is arranged between the metal cylinder sleeve and the joint test probe.
According to the solar cell module electrical property test lead device, two conductive cores arranged in the female joint are two semi-circular surface stretching bodies respectively; an insulating bonding layer is arranged between the two conductive cores.
The invention relates to a solar cell module electrical property test lead device, wherein each group of elastic conductive pieces are a plurality of conductive piece test probes which are arranged in parallel and are mutually and electrically connected; the contact reliability is improved by arranging a plurality of test probes, so that the measurement precision is improved.
According to the lead device for testing the electrical property of the solar cell module, the lead between the solar cell module and the electrical property testing device is improved, and the automatic testing of the electrical property testing process is realized through the preset module and the piston module, so that the testing efficiency is remarkably improved, the labor cost is reduced, and the bad experience that an operator is coiled in a narrow space for a long time is avoided; two conductive cores are arranged in the joints matched with the tail cable joint of the solar cell module and are used for respectively conducting I and V signals, although the contact resistance of the conductive cores still exists, the current flowing through the contact resistance of the V conductive core is greatly reduced after voltage and current signals are shunted, and the voltage drop caused by the current is also greatly reduced, so that the measurement deviation is reduced; meanwhile, by improving the structure of the conductive core in the connector, on the basis of compatible matching with the MC4 series connector on the solar cell module tail cable, the inconvenience of the test is not caused, and the test is more accurate.
Drawings
FIG. 1 is a schematic structural diagram of a solar cell module electrical performance test lead device according to the present invention;
FIG. 2 is a circuit diagram of the solar cell according to the present invention during electrical performance testing;
FIG. 3 is a schematic structural diagram of two conductive cores in a female connector according to the present invention in front and right views;
FIG. 4 is a schematic structural diagram of the front and right views of two conductive cores in the male connector according to the present invention;
FIG. 5 is a schematic view of an elastic conductive member formed by a plurality of electrically connected test probes according to the present invention;
FIG. 6 is a schematic front and top view of a pre-assembled module with a wedge as a fastening device according to the present invention;
FIG. 7 is a schematic front and top view of a pre-assembled module of a flexible clip according to the present invention;
the solar cell module comprises a solar cell module 1, a fixing device 2, a base 3, a conductive contact 4, an elastic conductive piece 5, a support 6, a supporting mechanism 7, a sliding block 8, a driving device thereof, an electrical property testing device 9, a conductive core 10V +, a conductive core 11I +, a semi-circular surface stretching body 12, an insulating bonding layer 13, a metal cylinder sleeve 15, a connector 16 testing probe 17, an insulating filler 18, a conductive piece testing probe 18, a copper plate 19, a wedge 20, a spring 21, a movable clamping plate 22 and a shaft 23.
Detailed Description
The following describes the solar cell module 1 electrical property testing lead device in detail through the drawings and the examples.
Example one
The invention relates to a lead device for testing the electrical property of a solar cell module 1, which comprises a piston module and a preset module as shown in figure 1; the piston module comprises a bracket 6 capable of reciprocating along a fixed track and an elastic conductive piece 5; the elastic conductive piece 5 is arranged on the bracket 6; the elastic conductive piece 5 is electrically connected with an electrical property testing device 9; the preset module comprises a joint and a base 3; the base 3 is provided with a fixing device 2, and four air suction cups are selected as the fixing device 2 in the case of the scheme; the bottom end of the base 3 is provided with a conductive contact 4; the conductive contact 4 is electrically connected to the aforementioned contacts. The support 6 is arranged at the top end of the support mechanism 7, the support mechanism 7 is arranged on the sliding block and the driving device 8 thereof, and in the embodiment, the cylinder is selected as the sliding block and the driving device 8 thereof;
according to the lead device for testing the electrical property of the solar cell module 1, two conductive cores are arranged in the joint; each of which is electrically connected to a set of the aforementioned conductive contacts 4. In this embodiment, the number of the connectors includes two, i.e., a male connector and a female connector; the conductive contacts 4 are provided with four groups; four groups of elastic conductive pieces 5 are arranged. The conductive contacts 4 are arranged at the bottom end of the base 3 at equal intervals; the elastic conductive pieces 5 are arranged on the bracket 6 at equal intervals.
In this embodiment, as shown in fig. 3, the two conductive cores disposed in the female connector are two semicircular surface stretching bodies 12; an insulating bonding layer 13 is arranged between the two conductive cores, and epoxy resin glue is selected as the insulating bonding layer 13 in the embodiment; the two conductive cores arranged in the male connector are respectively a connector test probe 16 and a metal sleeve 15 coated on the connector test probe 16 as shown in FIG. 4; an insulating filler 17 is arranged between the metal sleeve 15 and the joint test probe 16, and in this embodiment, epoxy resin glue is selected as the insulating filler 17.
In actual operation, the preset module is fixed at a certain position of the solar cell module 1 through the fixing device 2, and then the position of the piston module is adjusted, so that the elastic conductive piece 5 and the conductive contact 4 can be correspondingly contacted; or the piston module can be fixed firstly, then the solar cell module 1 reaches a preset area, the preset module is installed, the position is adjusted, the elastic conductive piece 5 and the conductive contact 4 can be correspondingly contacted, and then the preset module is installed at the position of the solar cell module 1.
In the embodiment, as shown in fig. 1, a base 3 is preset on the back surface of a solar cell module 1 to be tested through a fixing device 2 and is butted with a joint on a tail cable of the solar cell module 1; the two connectors respectively adopt male and female connectors in the form of MC4, as shown in figure 3, two semicircular stretching bodies 12 are adhered into a cylinder through insulation, and each semicircular stretching body 12 is a conductive core and is used for being matched with the male connector on the solar cell module 1; as shown in fig. 4, the male connector is internally provided with a structure that a metal cylinder sleeve 15 externally wraps a connector test probe 16, the middle of the metal cylinder sleeve 15 and the connector test probe 16 is filled in an insulating way, the metal cylinder sleeve 15 is used as a conductive core, and the connector test probe 16 is used as another conductive core and is matched with a female connector on the solar cell module 1; four air suction cups are adopted as the fixing devices 2, and the base 3 is stably and detachably fixed on one side of the solar cell module 1, which is not exposed to light; four conductive contacts 4 made of copper blocks are arranged on a base 3 made of plastic in a 1X4 array, and the copper blocks are electrically connected with the conductive cores in a one-to-one correspondence manner; in this embodiment, four sets of elastic conductive members 5 are arranged in parallel on the bracket 6 in an insulated manner;
as shown in fig. 5, in this case, each group of elastic conductive elements 5 is formed by welding three conductive element testing probes 18 on a copper plate 19 side by side to ensure reliable contact, and the positions correspond to the conductive contacts 4 on the base 3; the four groups of elastic conductive pieces 5 are respectively and electrically connected with the I +, V +, I-and V-signal acquisition ends of the electrical property testing device 9; as shown in fig. 2, the V + conductive core 10 on the electrical performance testing device 9 collects V + signals from the positive terminal of the solar cell module 1, and the V + signals sequentially pass through the corresponding conductive contacts 4 and the elastic conductive pieces 5 to reach the V + signal collecting end of the electrical performance collecting device; the I + conductive core 11 collects I + signals from the positive electrode joint of the solar cell module 1, and the I + signals sequentially pass through the corresponding conductive contact 4 and the elastic conductive piece 5 to reach an I + signal collecting end of the electrical property collecting device; the V-and I-signals are analogized in this way; the I +, V +, I-, V-branches are not electrically connected to each other.
When the support 6 reaches the highest position, the elastic conductive piece 5 is in elastic electrical contact with the conductive contact 4, and when the support 6 reaches the lower limit of the position, the elastic conductive piece 5 is separated from the conductive contact 4, so that the discharging of the solar cell module 1 is not hindered;
in the electrical lead device for the solar cell module 1 of the embodiment, the preset module is fixed on the solar cell module 1 in advance and is butted with the joint of the solar cell module 1, after the solar cell module 1 is conveyed to a preset area on a production line, the upper top of the piston module of the lead device is electrically contacted with the preset module to perform electrical performance test, after the test is completed, the piston module descends, and the solar cell module 1 is discharged to the next station to detach the preset module. The automatic test of the electrical property test can be realized through the process.
Example two
On the basis of the first embodiment, as shown in fig. 6, an embodiment of the preset module adopts a wedge 20 as the fixing device 2, and the wedge 20 is located at one end of the base 3 and is integrally formed with the base 3; the thickness of the thicker part of the wedge 20 is larger than the distance between the solar cell module 1 and the flanging of the aluminum frame, and the thickness of the thinner part of the wedge 20 is smaller than the distance between the solar cell module 1 and the flanging of the aluminum frame; the base 3 of the preset module, which has one end with the wedge 20, is pressed into the gap between the solar cell module 1 and the flanging of the aluminum frame, as shown in fig. 1, the flanging of the aluminum frame at the upper right corner of fig. 1 will be clamped with the wedge 20, thereby fixing the preset module.
Five conductive contacts 4 are arranged on the base 3 in an insulated manner, four of the contacts are arranged side by side and are respectively used for transmitting I +, I-, V + and V-signals; the additional conductive contact 4, which is redundant and does not correspond to the elastic conductive element 5, is a possible solution to avoid the content of the patent, which is adopted by the person skilled in the art.
EXAMPLE III
On the basis of the first embodiment, as shown in fig. 7, an embodiment of the preset module adopts an elastic clip as the fixing device 2; two elastic clips are provided; the elastic clamp is formed on the base 3 by a spring 21, a movable clamping plate 22, a shaft 23 and the like; the middle part of the movable clamping plate 22 is provided with a downward bulge, a through hole is arranged on the bulge, and a corresponding bulge with a through hole is arranged on the base 3; the two through holes are jointly penetrated by a shaft 23, so that the movable clamping plate 22 can rotate around the shaft 23 within a certain range relative to the base 3; as shown in fig. 7, the spring 21 is located between the movable clamping plate 22 and the base 3, and forces the left end of the movable clamping plate 22 to be lifted, so that the right end of the movable clamping plate 22 is engaged with the base 3; the base 3 is also provided with a pedestal, and the spring 21 is sleeved on the pedestal to prevent falling off;
when the solar cell module is used, the elastic clamp is used for occluding the flanging of the aluminum frame of the solar cell module 1, and the function of fixing the preset module can be realized.
It should be noted that, the electrical performance test needs to conduct four signals, I +, I-, V +, V-corresponding to the respective elastic conductive elements 5, conductive contacts 4 and joint conductive cores, but other persons skilled in the art may intentionally set the elastic conductive elements 5, conductive contacts 4 and joints for other purposes or useless, so as to avoid the main part of the invention of this patent, but this lacks the inventive practice and should not exceed the protection scope of this patent.
Claims (10)
1. The utility model provides a solar cell module electrical property test lead wire device which characterized in that: comprises a piston module and a preset module; the piston module comprises a bracket (6) capable of reciprocating along a fixed track and an elastic conductive piece (5); the elastic conductive pieces (5) comprise at least four groups; the elastic conductive pieces (5) are arranged on the bracket (6) in an insulated manner; the preset module comprises a joint and a base (3); a fixing device (2) is arranged on the base (3); the bottom end of the base (3) is provided with at least four groups of conductive contacts (4) which are insulated from each other; the conductive contact (4) is electrically connected with the joint.
2. The solar cell module electrical property test lead device of claim 1, wherein: the bracket (6) is arranged at the top end of a supporting mechanism (7); a sliding block and a driving device (8) thereof are arranged below the supporting mechanism (7); the supporting mechanism (7) is arranged on the sliding block.
3. The solar cell module electrical property test lead device of claim 2, wherein: two independent conductive cores are arranged in the joint; each of said conductive cores is electrically connected to a set of the aforementioned conductive contacts (4).
4. The solar cell module electrical property test lead device of claim 3, wherein: the two connectors are respectively a male connector and a female connector; the conductive contacts (4) are provided with four groups; four groups of elastic conductive pieces (5) are arranged.
5. The solar cell module electrical property test lead device of claim 4, wherein: the conductive contacts (4) are arranged at the bottom end of the base (3) at equal intervals; the elastic conductive pieces (5) are arranged on the bracket (6) at equal intervals.
6. The solar cell module electrical property test lead device of claim 5, wherein: the fixing device (2) is an air sucker or an elastic clamp.
7. The solar cell module electrical property test lead device according to claim 5, wherein the fixing device (2) is a wedge (20) which can be embedded into the flanging of the aluminum frame of the solar cell module (1).
8. The solar cell module electrical property test lead device according to claim 6 or 7, wherein: the two conductive cores arranged in the male connector are respectively a connector test probe (16) and a metal cylinder sleeve (15) coated on the connector test probe (16); and an insulating filler (17) is arranged between the metal cylinder sleeve (15) and the joint test probe (16).
9. The solar cell module electrical performance test lead apparatus of claim 8, wherein: the two conductive cores arranged in the female joint are two semi-circular surface stretching bodies (12) respectively; an insulating adhesive layer (13) is arranged between the two conductive cores.
10. The solar cell module electrical performance test lead apparatus of claim 9, wherein: each group of elastic conductive pieces (5) is provided with a plurality of conductive piece testing probes (18) which are arranged in parallel and are mutually and electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010135317.1A CN111106798A (en) | 2020-03-02 | 2020-03-02 | Solar cell module electrical property test lead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010135317.1A CN111106798A (en) | 2020-03-02 | 2020-03-02 | Solar cell module electrical property test lead device |
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| CN111106798A true CN111106798A (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010135317.1A Pending CN111106798A (en) | 2020-03-02 | 2020-03-02 | Solar cell module electrical property test lead device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707444A (en) * | 2023-08-02 | 2023-09-05 | 北京卓立汉光仪器有限公司 | Solar cell testing device |
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2020
- 2020-03-02 CN CN202010135317.1A patent/CN111106798A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707444A (en) * | 2023-08-02 | 2023-09-05 | 北京卓立汉光仪器有限公司 | Solar cell testing device |
| CN116707444B (en) * | 2023-08-02 | 2023-11-10 | 北京卓立汉光仪器有限公司 | Solar cell testing device |
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