CN111175668A - Switching device for connecting power module test system with test tool - Google Patents
Switching device for connecting power module test system with test tool Download PDFInfo
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- CN111175668A CN111175668A CN201911336563.7A CN201911336563A CN111175668A CN 111175668 A CN111175668 A CN 111175668A CN 201911336563 A CN201911336563 A CN 201911336563A CN 111175668 A CN111175668 A CN 111175668A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The invention provides a switching device for connecting a power supply module test system with a test tool, which comprises a test board and a universal interface arranged on the test board, wherein the universal interface is connected with the test tool through an electric lead, the universal interface comprises a power supply input end universal interface, a load output end universal interface and a signal sampling end universal interface, the test board is also provided with a standard interface, the standard interface comprises a power supply output end standard interface connected with the power supply output end universal interface through an electric lead, the universal testing tool can realize the conversion application of the universal testing tool and the standard testing tool, and improves the applicability of the power module testing system matched with various testing tools.
Description
Technical Field
The invention relates to the technical field of electronic element testing, in particular to a switching device for connecting a power module testing system with a testing tool.
Background
When the power module testing system is used for testing the power module, the switching table between the testing system and the testing tool is only provided with the universal switching interface, the switching interface is only used for wiring, the circuit needs to be connected and confirmed in each test, the efficiency is low, and the testing tool cannot be standardized. Therefore, it is necessary to design a switching device for a power module test system, which can be applied to a general test tool and a standardized test tool.
Disclosure of Invention
The invention provides a switching device for connecting a power module test system and a test tool, which is not only suitable for a universal test tool, but also suitable for a standard test tool, does not need time-consuming and labor-consuming wiring and fussy line confirmation, and improves the test efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a switching device for connecting a power module test system with a test tool comprises a test board and a universal interface arranged on the test board, wherein the universal interface is connected with the test tool through an electric lead, the universal interface comprises a power input end universal interface, a load output end universal interface and a signal sampling end universal interface, a standard interface is also arranged on the test board, the standard interface comprises a power output end standard interface, a load output end standard interface and a signal sampling end standard interface which are connected with the power output end universal interface through the electric lead, the power output end standard interface and the power input end universal interface are switched through a switching line interface, and the switching line interface is arranged in the test board;
preferably, the power input terminal universal interface includes a first power input terminal universal interface, a second power input terminal universal interface and a third power input terminal universal interface which are mutually insulated and connected, the power output terminal standard interface includes a first power input terminal standard interface and a second power input terminal standard interface which are mutually insulated and connected, the patch cord interface includes a first patch cord interface and a second patch cord interface which are mutually insulated and connected, the first power input terminal universal interface is electrically connected with the first power input terminal standard interface through the first patch cord interface, and the second power input terminal universal interface is electrically connected with the second power input terminal standard interface through the second patch cord interface;
preferably, the load output end general interfaces include a first load output end general interface, a second load output end general interface, a third load output end general interface and a fourth load output end general interface which are connected in an insulated manner, and the load output end standard interfaces include a first load output end standard interface, a second load output end standard interface and a third load output end standard interface which are connected in an insulated manner;
preferably, the signal sampling end universal interface comprises a first signal sampling end universal interface, a second signal sampling end universal interface, a third signal sampling end universal interface and a fourth signal sampling end universal interface which are connected in an insulated manner, and the signal sampling end standard interface comprises a first signal sampling end standard interface, a second signal sampling end standard interface and a third signal sampling end standard interface;
preferably, at least two capacitors are connected in parallel to the load output terminal general interface and the signal sampling terminal general interface;
preferably, the two capacitors include an electrolytic capacitor and a monolithic capacitor, and the electrolytic capacitor and the monolithic capacitor are both arranged inside the test board and located between the positive interface and the negative interface of the first transfer line interface;
preferably, the standard interface includes a plurality of jacks, the jacks are asymmetrically distributed on the table top of the test table, and the jacks are respectively used for installing the power output end standard interface, the load output end standard interface, and the positive interface and the negative interface on the signal sampling end standard interface;
preferably, the straight line of the jacks for installing the positive interface and the negative interface of the second power input end standard interface, the straight line of the jacks for installing the positive interface and the negative interface of the first power input end standard interface, and the positive interface and the negative interface of the third signal sampling end standard interface, the straight line where the jacks of the positive interface and the negative interface used for installing the third load output end standard interface and the positive interface and the negative interface of the second signal sampling end standard interface are located, the straight line where the jacks of the positive interface and the negative interface used for installing the second load output end standard interface and the positive interface and the negative interface of the first signal sampling end standard interface are located, and the straight line where the jacks of the positive interface and the negative interface used for installing the first load output end standard interface are located are parallel to each other;
preferably, a straight line where the jacks of the positive interface of the first power input standard interface, the positive interface of the third load output standard interface, the positive interface of the second load output standard interface and the positive interface of the first load output standard interface are located, a straight line where the jacks of the positive interface of the second power input standard interface, the positive interface of the third signal sampling end standard interface, the positive interface of the second signal sampling end standard interface and the positive interface of the first signal sampling end standard interface are located, a straight line where the jacks of the negative interface of the second power input standard interface, the negative interface of the third signal sampling end standard interface, the negative interface of the second signal sampling end standard interface and the negative interface of the first signal sampling end standard interface are located, a straight line where the jacks of the negative interface of the second power input standard interface and the negative interface of the third signal sampling end standard interface are located, a straight line where the jacks of the second signal sampling end standard interface and the negative interface of the first signal sampling end, Straight lines where the jacks of the negative interface of the first power input end standard interface, the negative interface of the third load end standard interface, the negative interface of the second load end standard interface and the negative interface of the first load end standard interface are located are parallel to each other;
preferably, the distance between the jack for installing the positive interface of the first power input standard interface and the jack for installing the positive interface of the first load output standard interface is L3, the distance between the jack used for installing the positive interface of the first load output end standard interface and the jack used for installing the negative interface of the first load output end standard interface is L1, the distance between the jack for installing the positive interface of the second power input terminal standard interface and the jack for installing the negative interface of the second power input terminal standard interface is L2, L1 is L3 > L2, the distance between the jack for installing the positive interface of the second power input end standard interface and the jack for installing the positive interface of the first load output end standard interface is larger than L1.
Compared with the prior art, the invention has the advantages that:
firstly, the conversion application of the universal test tool and the standard test tool can be realized, and the applicability of the power module test system matched with various types of test tools is improved.
Second, with forming great interval between second power input end standard interface and the first load output end standard interface and forming great interval between positive pole standard interface and the negative pole standard interface on first power input end standard interface and the three load output end standard interface, the arrangement and the installation of the three signal sampling end standard interface of being convenient for to and realize that three load output end standard interface and three signal sampling end standard interface separately walk the line, make the wiring simpler and walk the line easier.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a schematic view of a partial cross-sectional structure of the present invention
FIG. 3 is a schematic diagram of a general interface structure of a power input terminal
FIG. 4 is a schematic diagram of a general interface structure of a load output terminal
FIG. 5 is a schematic diagram of a general interface structure of a signal sampling terminal
FIG. 6 is a jack distribution diagram of a standard interface
FIG. 7 is another distribution diagram of jacks of a standard interface
1. A test bench; 2. a standard interface; 3. a power input terminal general interface; 4. a load output end general interface; 5. a signal sampling terminal universal interface; 6. a conductive post; 7. an insulating support plate; 8. an electrical lead; 9. a negative terminal of a universal interface of a first power input end; 10. a first power input end universal interface positive terminal; 11. a second power input end universal interface negative terminal; 12. a second power input end universal interface positive terminal; 13. a first power input end standard interface positive terminal; 14. a first power input terminal standard interface negative terminal; 15. a second power input end standard interface positive terminal; 16. a second power input terminal standard interface negative terminal; 17. a first transfer line positive interface; 18. a first transfer line negative electrode interface; 19. a second patch cord positive interface; 20. a second patch cord negative interface; 21. a first power input terminal general interface; 22. a second power input terminal general interface; 23. a third power input terminal general interface; 24. a first load output end general interface; 25. a second load output end general interface; 26. a third load output end general interface; 27. a fourth load output end general interface; 28. a first signal sampling terminal general interface; 29. a second signal sampling terminal general interface; 30. a third signal sampling terminal general interface; 31. a fourth signal sampling terminal general interface; 50. a jack;
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 and 2 show a specific embodiment of the present invention, in which the present invention provides a switching device for connecting a power module test system and a test fixture, the switching device includes a test board 1 and a universal interface disposed on the test board 1, the universal interface is connected with the test fixture through an electrical lead 8, the universal interface includes a power input end universal interface 3, a load output end universal interface 4 and a signal sampling end universal interface 5, the test board 1 is further provided with a standard interface 2, the standard interface 2 includes a power output end standard interface, a load output end standard interface and a signal sampling end standard interface, the power output end standard interface is connected with the power input end universal interface 3 through an electrical lead 8, and the power output end standard interface is switched with the power input end universal interface 3 through a switching line interface, and the switching line interface is disposed inside the. The universal testing tool can be suitable for universal testing tools and standard testing tools, time-consuming and labor-consuming wiring and complex circuit confirmation are not needed, testing efficiency is improved, conversion application of the universal testing tools and the standard testing tools can be achieved, and applicability of matching of a power module testing system and various testing tools is improved.
As shown in fig. 2 and 3, the power input terminal common interface 3 includes a first power input terminal common interface 21 insulated from each other, the universal interface 22 of the second power input end and the universal interface 23 of the third power input end, the universal interface 21 of the first power input end is used for connecting a high-voltage direct-current power supply, the universal interface 22 of the second power input end is used for connecting a low-voltage direct-current power supply, the universal interface 23 of the third power input end is used for connecting an alternating-current power supply, the standard interface of the power output end comprises a standard interface of the first power input end and a standard interface of the second power input end which are connected in an insulated mode, the interface of the patch cord comprises a first patch cord interface and a second patch cord interface which are connected in an insulated mode, the universal interface 21 of the first power input end is electrically connected with the standard interface of the first power input end through the first patch cord interface, and the universal interface 22 of the second. Specifically, the test system of the power module has 3 power supplies (DC600V, DC100V, AC), wherein three power supplies (DC600V, DC100V, AC power) are led out from a universal interface at a power input end, 2 power supplies (DC600V, DC100V) are led out from a standard interface at the power input end, a patch cord interface inside the test board 1 of the standard interface 2 and the universal interface is connected with the power supplies (DC600V, DC100V, AC power) of the test system after being connected through an electric lead 8, taking the input DC power as an example, a positive terminal 10 of the universal interface at a 600V power input end and a positive terminal 13 of the standard interface at a 600V power input end are connected with a positive interface 17 of a first patch cord through an electric lead 8 and then are connected with a positive input end of the DC600V of the test system; the negative terminal 9 of the universal interface of the 600V power input end and the negative terminal 14 of the standard interface of the 600V power input end are connected with the negative interface 18 of the first transfer wire through an electric lead 8 and then connected with the negative output end of the test system connection DC 600V. The positive terminal 12 of the universal interface of the 100V power input end and the positive terminal 15 of the standard interface of the 100V power input end are connected with the positive interface 19 of the second patch cord through an electric lead 8 and then are connected with the positive input end of the DC100V of the test system; the negative terminal 11 of the universal interface of the 100V power input end and the negative terminal 16 of the standard interface of the 100V power input end are connected with the negative terminal of the DC100V of the test system after being connected with the negative interface 20 of the second patch cord through an electric lead 8, the insulation interconnection of the universal interface 3 of the power input end means that a positive terminal and a negative terminal of the universal interface of the first power input end, a positive terminal and a negative terminal of the universal interface of the second power input end and a live wire terminal, a null wire terminal and a ground terminal of the universal interface of the third power input end are respectively arranged on an insulating plate, the universal interface of the first power input end, the universal interface of the second power input end and the universal interface of the third power input end are arranged on the insulating plate in different areas, and no electric connection occurs between every; the insulating interconnection contact fingers of the power input end standard interface are provided with hollow conductive columns 6 at intervals on an insulating support plate 7, each conductive column 6 is independent and cannot be arranged on the insulating support plate 7, no electric connection occurs between every two conductive columns, and the insulating connection mode of the interconnection on the connector lug interface is the same as that of the power input end universal interface.
As shown in fig. 4, the Load output end general interface 4 includes a first Load output end general interface 24(Load1), a second Load output end general interface 25(Load2), a third Load output end general interface 26(Load3) and a fourth Load output end general interface 27(Load4) which are connected in an insulated manner, and the Load output end standard interfaces include a first Load output end standard interface, a second Load output end standard interface and a third Load output end standard interface which are connected in an insulated manner, where the insulated connection is the same as that of the power supply input end general interface.
As shown in fig. 5, the signal sampling terminal universal interface 5 includes a first signal sampling terminal universal interface 28(Sense1), a second signal sampling terminal universal interface 29(Sense2), a third signal sampling terminal universal interface 30(Sense3), and a fourth signal sampling terminal universal interface 31(Sense4) that are connected in an insulated manner, and the signal sampling terminal standard interfaces include a first signal sampling terminal standard interface, a second signal sampling terminal standard interface, and a third signal sampling terminal standard interface, where the insulated connection is the same as the insulated connection of the power input terminal universal interface.
As shown in fig. 1 and fig. 2, at least two capacitors are connected in parallel to the load output terminal general interface 4 and the signal sampling terminal general interface 5. The two capacitors comprise an electrolytic capacitor and a monolithic capacitor, the electrolytic capacitor and the monolithic capacitor are both arranged in the test board 1 and are located between the positive electrode interface 17 and the negative electrode interface 18 of the first transfer line interface, and the electrolytic capacitor and the monolithic capacitor are respectively a 50V10 mu F electrolytic capacitor and a 60V0.1 mu F monolithic capacitor.
As shown in fig. 1 and 2, the standard interface 2 includes a plurality of jacks 50, the jacks 50 are asymmetrically distributed on the platform surface of the test platform 1, the jacks 50 are respectively used for installing a positive interface and a negative interface on the power output end standard interface, the load output end standard interface and the signal sampling end standard interface, and the hollow conductive column 6 is installed in the jack 50, which is beneficial to realizing the plug-in type fast connection.
As shown in fig. 6, the straight line of the jack 50 for installing the positive interface and the negative interface of the standard interface of the second power input terminal (100V), the straight line of the jack 50 for installing the positive interface and the negative interface of the standard interface of the first power input terminal (600V) and the positive interface and the negative interface of the standard interface of the third signal sampling terminal (Sense3), the straight line of the jack 50 for installing the positive interface and the negative interface of the standard interface of the third Load output terminal (Load3) and the positive interface and the negative interface of the standard interface of the second signal sampling terminal (Sense2), the straight line of the jack 50 for installing the positive interface and the negative interface of the standard interface of the second Load output terminal (Load2) and the standard interface of the first signal sampling terminal (Sense1), and the straight line of the jack 50 for installing the positive interface and the negative interface of the standard interface of the first Load output terminal (Load1) are parallel to each other, a straight line where the jack 50 for installing the positive interface of the first power input end (600V) standard interface, the positive interface of the third Load output end (Load3) standard interface, the positive interface of the second Load output end (Load2) standard interface and the positive interface of the first Load output end (Load1) standard interface is located, a straight line where the jack 50 for installing the positive interface of the second power input end (100V) standard interface, the positive interface of the third signal sampling end (Sense3) standard interface, the positive interface of the second signal sampling end (Sense2) standard interface and the jack 50 of the positive interface of the first signal sampling end (Sense1) standard interface are located, a negative interface for installing the second power input end (100V) standard interface, the negative interface of the third signal sampling end (Sense3) standard interface, the negative interface of the second signal sampling end (Sense2) standard interface and the negative interface of the jack 50 of the first signal sampling end (Sense1) standard interface are located, The straight lines of the jacks 50 for mounting the negative interface of the first power input end (600V) standard interface, the negative interface of the third Load end (Load3) standard interface, the negative interface of the second Load end (Load2) standard interface and the negative interface of the first Load end (Load1) standard interface are parallel to each other. The second power input end standard interface and the first load output end standard interface form a larger space, and the first power input end standard interface and the positive electrode standard interface and the negative electrode standard interface on the three load output end standard interfaces form a larger space, so that the arrangement and installation of the three signal sampling end standard interfaces are facilitated, and the three load output end standard interfaces and the three signal sampling end standard interfaces are separately wired, so that the wiring is simpler, and the wiring is easier
As shown in fig. 7, a distance between the jack 50 for mounting the positive interface of the first power input terminal standard interface and the jack 50 for mounting the positive interface of the first load output terminal standard interface is L3, a diameter of the jack 50 is 5mm, a value of L1 is 24mm to 56mm, preferably 40mm, a value of L2 is 16mm to 24mm, preferably 20mm, and a value of L3 is 24mm to 56mm, preferably 40 mm.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A switching device for connecting a power module test system with a test tool comprises a test board (1) and a universal interface arranged on the test board (1), wherein the universal interface is connected with the test tool through an electric lead (8), and comprises a power input end universal interface (3), a load output end universal interface (4) and a signal sampling end universal interface (5), and is characterized in that a standard interface (2) is also arranged on the test board (1), the standard interface (2) comprises a power output end standard interface, a load output end standard interface and a signal sampling end standard interface which are connected with the power output end universal interface (3) through the electric lead (8), and the power output end standard interface and the power input end universal interface (3) are switched through a switching line interface, the patch cord interface is arranged inside the test board (1).
2. The switching device for connecting the power module test system with the test tool according to claim 1, wherein: the power input end general interface (3) includes first power input end general interface (21), second power input end general interface (22) and the third power input end general interface (23) that mutual insulation connects, power output end standard interface includes the first power input end standard interface and the second power input end standard interface that mutual insulation connects, the patch cord interface includes the first patch cord interface and the second patch cord interface that mutual insulation connects, first power input end general interface (21) passes through first patch cord interface with first power input end standard interface electricity is connected, second power input end general interface (22) pass through the second patch cord interface with second power input end standard interface electricity is connected.
3. The switching device for connecting the power module test system with the test tool according to claim 1, wherein: the load output end general interface (4) comprises a first load output end general interface (24), a second load output end general interface (25), a third load output end general interface (26) and a fourth load output end general interface (27) which are connected in an insulated mode, and the load output end standard interface comprises a first load output end standard interface, a second load output end standard interface and a third load output end standard interface which are connected in an insulated mode.
4. The switching device for connecting the power module test system with the test tool according to claim 1, wherein: the signal sampling end universal interface (5) comprises a first signal sampling end universal interface (28), a second signal sampling end universal interface (29), a third signal sampling end universal interface (30) and a fourth signal sampling end universal interface (31) which are connected in an insulated mode, and the signal sampling end standard interface comprises a first signal sampling end standard interface, a second signal sampling end standard interface and a third signal sampling end standard interface.
5. The switching device for connecting the power module test system with the test tool according to claim 1, wherein: at least two capacitors are connected in parallel to the load output end universal interface (4) and the signal sampling end universal interface (5).
6. The switching device for connecting the power module test system with the test tool according to claim 5, wherein: two electric capacity include electrolytic capacitor and monolithic electric capacity, just electrolytic capacitor with monolithic electric capacity all locates the inside of testboard (1) just is located between the positive pole interface and the negative pole interface of first wiring interface.
7. The switching device for connecting the power module test system with the test tool according to any one of claims 2 to 6, wherein: the standard interface (2) comprises a plurality of jacks (50), the jacks (50) are asymmetrically distributed on the table board of the test table (1), and the jacks (50) are respectively used for installing the power output end standard interface, the load output end standard interface and the positive interface and the negative interface on the signal sampling end standard interface.
8. The switching device for connecting the power module test system with the test tool according to claim 7, wherein: a straight line where the jack (50) for installing the positive interface and the negative interface of the second power input end standard interface is located, a straight line where the jack (50) for installing the positive interface and the negative interface of the first power input end standard interface and the positive interface and the negative interface of the third signal sampling end standard interface are located, the straight line where the jack (50) is located is used for installing the positive interface and the negative interface of the third load output end standard interface and the positive interface and the negative interface of the second signal sampling end standard interface, the straight line where the jack (50) is located is used for installing the positive interface and the negative interface of the second load output end standard interface and the positive interface and the negative interface of the first signal sampling end standard interface, and the straight line where the jack (50) is located is used for installing the positive interface and the negative interface of the first load output end standard interface are mutually parallel.
9. The switching device for connecting the power module test system with the test tool according to claim 7, wherein: the straight line of the jack (50) of the standard interface of the second power input end, the positive interface of the standard interface of the third load output end, the positive interface of the standard interface of the second load output end and the positive interface of the standard interface of the first load output end, the straight line of the jack (50) of the standard interface of the second power input end, the positive interface of the standard interface of the third signal sampling end, the positive interface of the standard interface of the second signal sampling end and the positive interface of the standard interface of the first signal sampling end, the straight line of the jack (50) of the standard interface of the second power input end, the negative interface of the standard interface of the third signal sampling end, the negative interface of the standard interface of the second signal sampling end and the negative interface of the standard interface of the first signal sampling end, the straight line of the jack (50) of the standard interface of the second power input end, the negative interface of the standard interface of the third signal sampling end, the negative interface of the standard interface of the second signal sampling end, Straight lines where the jacks (50) used for mounting the negative interface of the first power input end standard interface, the negative interface of the third load end standard interface, the negative interface of the second load end standard interface and the negative interface of the first load end standard interface are located are mutually parallel.
10. The switching device for connecting the power module test system with the test tool according to claim 9, wherein: the distance between the jack (50) used for installing the positive interface of the first power supply input end standard interface and the jack (50) used for installing the positive interface of the first load output end standard interface is L3, the distance between the jack (50) used for installing the positive interface of the first load output end standard interface and the jack (50) used for installing the negative interface of the first load output end standard interface is L1, the distance between the jack (50) used for installing the positive interface of the second power input end standard interface and the jack (50) used for installing the negative interface of the second power input end standard interface is L2, the L1 is L3 > L2, the distance between the jack (50) used for installing the positive interface of the second power supply input end standard interface and the jack (50) used for installing the positive interface of the first load output end standard interface is larger than L1.
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