CN216873162U - Kelvin test tool for power test - Google Patents
Kelvin test tool for power test Download PDFInfo
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- CN216873162U CN216873162U CN202220591608.6U CN202220591608U CN216873162U CN 216873162 U CN216873162 U CN 216873162U CN 202220591608 U CN202220591608 U CN 202220591608U CN 216873162 U CN216873162 U CN 216873162U
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model provides a Kelvin test tool for power test, which can ensure that test data are stable and achieve an expected test effect; including installing the body of rod on photovoltaic module, the contact subassembly is equipped with on the body of rod, the contact subassembly is equipped with two sets ofly, divide into anodal contact subassembly and negative pole contact subassembly, and respectively the sliding assembly in body of rod both ends, anodal contact subassembly includes independent first anodal contact and the anodal contact of second, the negative pole contact subassembly includes independent first negative pole contact and second negative pole contact, first anodal contact and the anodal contact of second form public first structure, first negative pole contact and second negative pole contact form female first structure all be equipped with the insulating part between first anodal contact and the anodal contact of second, first negative pole contact and the second negative pole contact, just be equipped with semi-annular guide cover respectively in first anodal contact and the anodal contact periphery of second.
Description
Technical Field
The utility model relates to the technical field of power testing tools, in particular to a Kelvin testing tool for power testing.
Background
In the power test procedure of the photovoltaic module, in order to save labor and avoid the problem of manual repeated wire plugging and unplugging, an auxiliary test tool is mostly installed on the photovoltaic module, and a probe of the test equipment is automatically contacted with a conductive metal sheet on the auxiliary test tool, so that the electric connection with a corresponding joint of the photovoltaic module is realized, and the wiring operation before the test is finished.
At present, in order to improve the testing progress, a kelvin testing method is generally adopted, and the kelvin testing method is a so-called four-wire testing method, and the purpose of the four-wire testing method is to deduct the voltage drop caused by the resistance of a conductor. Typically, the equivalent resistance of a 30 cm long wire is about ten milliohms to hundreds of milliohms, and if the current through the wire is large enough (e.g., on the order of amperes), the voltage drop across the wire can reach tens to hundreds of millivolts.
However, the currently popular four-wire system test tools in the market are all provided with wire connection, and although the tool has a prototype of a kelvin test method, the wire and the wire loss exist, so that data distortion to a certain degree is caused, and the expected test effect cannot be achieved.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a kelvin test tool for power test, which can ensure stable test data and achieve an expected test effect.
The technical scheme is as follows: the utility model provides a kelvin test fixture for power test, is including installing the body of rod on photovoltaic module, be equipped with the contact subassembly on the body of rod, its characterized in that: the contact subassembly is equipped with two sets ofly, divide into anodal contact subassembly and negative pole contact subassembly, and respectively sliding assembly in body of rod both ends, anodal contact subassembly includes independent first anodal contact and second anodal contact, the negative pole contact subassembly includes independent first negative pole contact and second negative pole contact, first anodal contact and second anodal contact form public first structure, first negative pole contact and second negative pole contact form female first structure all be equipped with the insulating part between first anodal contact and second anodal contact, first negative pole contact and the second negative pole contact, and be in first anodal contact and second anodal contact periphery are equipped with semi-annular guide cover respectively.
It is further characterized in that:
the rod body comprises a fixed rod and two adjusting rods, the two adjusting rods are respectively and movably connected to two ends of the fixed rod, and the positive contact assembly and the negative contact assembly are respectively assembled on the adjusting rods at two ends in a sliding manner;
the fixed rod and the adjusting rods are of square tube structures, the adjusting rods at two ends are respectively inserted at two ends of the fixed rod, and corresponding jacks are arranged at the end parts of the two ends of the fixed rod and the end part of the adjusting rod corresponding to the end parts of the two ends of the fixed rod;
the positive contact assembly comprises a positive electrode base, the bottom surface of the positive electrode base is provided with a U-shaped first sliding groove, the positive electrode base is slidably assembled on the adjusting rod at one end through the first sliding groove, a positive electrode mounting groove is formed in the side end of the positive electrode base, and the first positive contact and the second positive contact are adjacently assembled in the positive electrode mounting groove and form a male head structure; the peripheries of the first positive contact and the second positive contact which form the male head structure are respectively provided with the semi-annular guide cover;
the negative contact assembly comprises a negative electrode base, a U-shaped second sliding groove is formed in the bottom surface of the negative electrode base, the negative electrode base is assembled on the adjusting rod at the other end in a sliding mode through the second sliding groove, a negative electrode installation groove is formed in the side end of the negative electrode base, and the first negative contact and the second negative contact are assembled in the negative electrode installation groove in an adjacent mode and form a female head structure;
the insulating piece is divided into a first insulating piece and a second insulating piece, the first insulating piece is arranged in an installation gap between the first positive contact and the second positive contact in the positive electrode installation groove, and the second insulating piece is arranged in an installation gap between the first negative contact and the second negative contact in the negative electrode installation groove.
The utility model has the advantages that the positive contact component and the negative contact component are respectively provided with the independent first positive contact and the independent second positive contact, the independent first negative contact and the independent second negative contact which can be respectively used as voltage and current test contacts, no wires are needed, the independent contacts are arranged, the independent connection can be carried out, the voltage and the current can be separated out during the test, the data stability during the test is ensured, the accurate test effect is achieved, and the guide connection is convenient during the test connection by arranging the semi-annular guide cover.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the construction of the contacts in the positive contact assembly;
FIG. 3 is a schematic diagram of the structure of the positive electrode mount in the positive contact assembly;
fig. 4 is a schematic view of the structure of the negative contact assembly of the present invention.
Detailed Description
As shown in fig. 1 to 4, a kelvin test tool for power test according to the present invention includes a rod body mounted on a photovoltaic module (not shown in the figure), the rod body is provided with two sets of contact assemblies, which are divided into a positive contact assembly 1 and a negative contact assembly 2, and are respectively slidably mounted at two ends of the rod body, the positive contact assembly 1 includes a first positive contact 1-1 and a second positive contact 1-2, the negative contact assembly 2 includes a first negative contact 2-1 and a second negative contact 2-2, which are independent and can be used as voltage and current test contacts, and insulators (not shown in the figure) are respectively disposed between the first positive contact 1-1 and the second positive contact 1-2, and between the first negative contact 2-1 and the second negative contact 2-2, and can be made of existing insulating materials, a sheet-like structure may be employed to achieve an insulating separation of the two contacts.
The rod body comprises a fixed rod 3 and two adjusting rods 4, the two adjusting rods 4 are respectively movably connected to two ends of the fixed rod 3, and the positive contact assembly 1 and the negative contact assembly 2 are respectively assembled on the adjusting rods 4 at the two ends in a sliding manner; the fixed rod 3 and the adjusting rod 4 are both square tube structures, the adjusting rods 4 at both ends are respectively inserted at both ends of the fixed rod 3, and the end parts of both ends of the fixed rod 3 and the end parts of the adjusting rods 4 corresponding to the end parts are provided with corresponding jacks 13.
The positive contact assembly 1 comprises a positive electrode base 5, a U-shaped first sliding groove 6 is formed in the bottom surface of the positive electrode base 5, the positive electrode base 5 is slidably assembled on the adjusting rod 4 at one end through the first sliding groove 6, a positive electrode mounting groove 7 is formed in the side end of the positive electrode base 5, and a first positive contact 1-1 and a second positive contact 1-2 in the positive contact assembly 1 are adjacently assembled in the positive electrode mounting groove 7 to form a male structure; the peripheries of the first positive contact 1-1 and the second positive contact 1-2 which form a male structure are respectively provided with a semi-annular guide cover 8 so as to facilitate guide connection during test connection, such as connection with an MC4 connector, and further, the length of the first positive contact 1-1 and the second positive contact 1-2 in the positive contact assembly 1 is less than the length of the semi-annular guide cover 8, preferably less than 3 mm.
The negative contact assembly 2 comprises a negative electrode base 9, a U-shaped second chute 10 is arranged on the bottom surface of the negative electrode base 9, the negative electrode base 9 is slidably assembled on the adjusting rod 4 at the other end through the second chute 10, a negative electrode mounting groove 11 is arranged at the side end of the negative electrode base 9, and a first negative contact 2-1 and a second negative contact 2-2 in the negative contact assembly 2 are adjacently assembled in the negative electrode mounting groove 11 to form a female head structure.
The insulating part is divided into a first insulating part and a second insulating part, the first insulating part is arranged in a mounting gap 14 between a first positive contact 1-1 and a second positive contact 1-2 in the positive electrode mounting groove 7, and the second insulating part is arranged in a mounting gap 12 between a first negative contact 2-1 and a second negative contact 2-2 in the negative electrode mounting groove 11.
In the utility model, four independent contacts, namely two anodes, are led out: current, voltage, two cathodes: current, voltage; the insulating pieces are arranged between the two contacts of the anode and the two contacts of the cathode, so that mutual interference during data acquisition can be avoided and external interference can be eliminated during testing, thereby achieving stable test data, small power repeatability fluctuation and expected test effect; simultaneously, this frock can realize easy to assemble dismantlement, and positive contact subassembly 1 and negative pole contact subassembly 2 can remove the horizontal adjustment to and adjust the length of pole 4 through the adjustment, can change the whole length of the body of rod, thereby fix and use on the photovoltaic module of different length.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a kelvin test fixture for power test, is including installing the body of rod on photovoltaic module, be equipped with the contact subassembly on the body of rod, its characterized in that: the contact subassembly is equipped with two sets ofly, divide into anodal contact subassembly and negative pole contact subassembly, and respectively sliding assembly in body of rod both ends, anodal contact subassembly includes independent first anodal contact and second anodal contact, the negative pole contact subassembly includes independent first negative pole contact and second negative pole contact, first anodal contact and second anodal contact form public first structure, first negative pole contact and second negative pole contact form female first structure all be equipped with the insulating part between first anodal contact and second anodal contact, first negative pole contact and the second negative pole contact, and be in first anodal contact and second anodal contact periphery are equipped with semi-annular guide cover respectively.
2. The kelvin test tool for power testing of claim 1, wherein: the pole body includes dead lever, regulation pole, it is equipped with two to adjust the pole, two adjust pole swing joint respectively in the dead lever both ends, anodal contact subassembly and negative pole contact subassembly respectively sliding assembly in both ends adjust the pole on.
3. The kelvin test tool for power testing of claim 2, wherein: the fixed rod and the adjusting rod are of square tube structures, the adjusting rods at two ends are respectively inserted into two ends of the fixed rod, and corresponding jacks are formed in the end parts of the two ends of the fixed rod and the end parts of the adjusting rods corresponding to the end parts of the two ends of the fixed rod.
4. The kelvin test tool for power testing of claim 3, wherein: the positive contact assembly comprises a positive electrode base, the bottom surface of the positive electrode base is provided with a U-shaped first sliding groove, the positive electrode base is slidably assembled on the adjusting rod at one end through the first sliding groove, a positive electrode mounting groove is formed in the side end of the positive electrode base, and the first positive contact and the second positive contact are adjacently assembled in the positive electrode mounting groove and form a male head structure; and the peripheries of the first positive contact and the second positive contact which form the male head structure are respectively provided with the semi-annular guide cover.
5. The kelvin test tool for power testing of claim 4, wherein: the negative electrode contact assembly comprises a negative electrode base, a U-shaped second sliding groove is formed in the bottom surface of the negative electrode base, the negative electrode base is assembled on the adjusting rod at the other end in a sliding mode through the second sliding groove, a negative electrode mounting groove is formed in the side end of the negative electrode base, and the first negative electrode contact and the second negative electrode contact are assembled in the negative electrode mounting groove in an adjacent mode and form a female head structure.
6. The kelvin test tool for power testing of claim 5, wherein: the insulating piece is divided into a first insulating piece and a second insulating piece, the first insulating piece is arranged in an installation gap between the first positive contact and the second positive contact in the positive electrode installation groove, and the second insulating piece is arranged in an installation gap between the first negative contact and the second negative contact in the negative electrode installation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220591608.6U CN216873162U (en) | 2022-03-18 | 2022-03-18 | Kelvin test tool for power test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220591608.6U CN216873162U (en) | 2022-03-18 | 2022-03-18 | Kelvin test tool for power test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216873162U true CN216873162U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220591608.6U Active CN216873162U (en) | 2022-03-18 | 2022-03-18 | Kelvin test tool for power test |
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| Country | Link |
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| CN (1) | CN216873162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032490A (en) * | 2022-07-21 | 2022-09-09 | 无锡鼎梵洛普智能科技有限公司 | A power-on test tool that is convenient for automatic detection |
-
2022
- 2022-03-18 CN CN202220591608.6U patent/CN216873162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032490A (en) * | 2022-07-21 | 2022-09-09 | 无锡鼎梵洛普智能科技有限公司 | A power-on test tool that is convenient for automatic detection |
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