CN212134872U - IGBT fault diagnosis device - Google Patents
IGBT fault diagnosis device Download PDFInfo
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- CN212134872U CN212134872U CN202020366590.0U CN202020366590U CN212134872U CN 212134872 U CN212134872 U CN 212134872U CN 202020366590 U CN202020366590 U CN 202020366590U CN 212134872 U CN212134872 U CN 212134872U
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Abstract
The utility model discloses a IGBT fault diagnosis device relates to an electron repair tools. The device is formed by connecting a shell, a first test pen, a second test pen, a third test pen, a first power switch, a second power switch, a first detection switch, a second detection switch, a third detection switch, a battery, a fuse, a capacitor, a first resistor, a first light-emitting diode, a second resistor, a second light-emitting diode, a third resistor, a third light-emitting diode, a fourth resistor, a fourth light-emitting diode, a first diode, a second diode, a third diode, a fourth diode and the like through dedicated lines. The shell comprises a bottom box and a box cover, and a power switch, a detection switch and a light emitting diode are mounted on the box cover. The utility model discloses be applied to the electronic maintenance trade, quick diagnosis IGBT trouble has simple structure, low cost, small in size, advantages such as convenient to use.
Description
Technical Field
The utility model relates to an electron repair tools specifically is an IGBT fault diagnosis device.
Background
The IGBT is widely applied to the fields of frequency converters, switching power supplies, lighting circuits, transportation, electric automobiles, new energy equipment and the like, and has the current situations of wide application range and high maintenance requirement. At present, tools for detecting IGBT faults mainly depend on a universal meter, and the current situations of low detection efficiency, complex detection steps and difficult online detection exist.
Disclosure of Invention
To above background, the utility model provides a IGBT fault diagnosis device, the utility model discloses a following technical scheme realizes above-mentioned purpose:
the IGBT fault diagnosis device comprises a shell, a first test pen G, a second test pen C, a third test pen E, a first power switch, a second power switch, a first detection switch, a second detection switch, a third detection switch, a battery, a fuse, a capacitor, a first resistor, a first light-emitting diode, a second resistor, a second light-emitting diode, a third resistor, a third light-emitting diode, a fourth resistor, a fourth light-emitting diode, a first diode, a second diode, a third diode and a fourth diode. The second pin 2 of the first power switch is connected with the first end of the fuse, the second end of the fuse is connected with the anode of the battery, the cathode of the battery is connected with the 5 th pin of the first power switch, the 8 th pin of the first power switch is connected with the 3 rd pin and the 10 th pin of the first detection switch, the 11 th pin of the first power switch is connected with the 6 th pin and the 7 th pin of the first detection switch, the 1 st pin and the 4 th pin of the first power switch are respectively connected with the 2 nd pin and the 5 th pin of the second power switch, the 3 rd pin of the first power switch is respectively connected with the first ends of the first resistor and the second resistor, the second end of the first resistor is connected with the anode of the first light-emitting diode, the cathode of the first light-emitting diode is connected with the 2 nd pin and the 9 th pin of the first detection switch, the second end of the second resistor is connected with the anode of the second light-emitting diode, the cathode of the second light-emitting diode is connected with the 2 nd pin of the second detection switch, the 6 th pin of the first power switch, the positive electrode of the first diode is respectively connected with the 5 th pin and the 12 th pin of the first detection switch, the positive electrode of the second diode is connected with the 5 th pin of the second detection switch, the 9 th pin of the first power switch is connected with the first test pen G, and the 12 th pin of the first power switch is connected with the 8 th pin of the second detection switch; the 3 rd pin of the second power switch is respectively connected with the first ends of the third resistor and the fourth resistor, the second end of the third resistor is connected with the anode of the third light-emitting diode, the cathode of the third light-emitting diode is connected with the 2 nd pin of the third detection switch, the second end of the fourth resistor is connected with the anode of the fourth light-emitting diode, the cathode of the fourth light-emitting diode is connected with the 8 th pin of the third detection switch, the 6 th pin of the second power switch is respectively connected with the cathodes of the third diode and the fourth diode, the anode of the third diode is connected with the 5 th pin of the third detection switch, the anode of the fourth diode is connected with the 11 th pin of the third detection switch, the 7 th pin and the 10 th pin of the second power switch are respectively connected with the second test pen C and the third test pen E, the 8 th pin of the second power switch is respectively connected with the 3 rd pin and the 4 th pin of the second detection switch, the 11 th pin of the second power switch is respectively connected with the 6 th pin and the 6 th pin of, The 9 th and 1 st feet; the 8 th pin of the first detection switch is connected with the anode of the capacitor, and the cathode of the capacitor is connected with the 11 th pin of the first detection switch; the 1 st pin of the third detection switch is connected with the 6 th pin and the second test pen C of the third detection switch, the 4 th pin of the third detection switch is connected with the 3 rd pin, the 9 th pin, the 10 th pin and the first test pen G of the third detection switch, and the 7 th pin of the third detection switch is connected with the 12 th pin and the third test pen E of the third detection switch. The shell comprises a bottom box and a box cover, wherein a first power switch, a second power switch, a first detection switch, a second detection switch, a third detection switch, a first light-emitting diode, a second light-emitting diode, a third light-emitting diode and a fourth light-emitting diode are arranged on the box cover.
Further, the power switch and the detection switch are rocker switches, 12 feet and 2 grades.
Further, the device is powered by a direct current battery.
Furthermore, the device is provided with three test pens, namely a first test pen G, a second test pen C and a third test pen E.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the advantages of simple structure, low cost, small in size, convenient to use, but quick diagnosis IGBT trouble for the maintenance progress improves work efficiency.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic diagram of an IGBT;
FIG. 3 is a front view of the cover of the present invention;
FIG. 4 is a schematic view of the lower side of the housing of the present invention;
fig. 5 is a schematic view of the left side of the housing of the present invention;
in the figure: s1-a first power switch, S2-a second power switch, K1-a first detection switch, K2-a second detection switch, K3-a third detection switch, FU-fuse, E-battery, C-capacitor, R1-a first resistor, R2-a second resistor, R3-a third resistor, R4-a fourth resistor, L1-a first light emitting diode, L2-a second light emitting diode, L3-a third light emitting diode, L4-a fourth light emitting diode, D1-a first diode, D2-a second diode, D3-a third diode, and D4-a fourth diode.
Detailed Description
The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiment of the present invention:
referring to fig. 1-5, the present invention provides a technical solution: an IGBT fault diagnosis device comprises a shell, a first test pen G, a second test pen C, a third test pen E, a first power switch S1, a second power switch S2, a first detection switch K1, a second detection switch K2, a third detection switch K3, a battery E, a fuse FU, a capacitor C, a first resistor R1, a first light-emitting diode L1, a second resistor R2, a second light-emitting diode L2, a third resistor R3, a third light-emitting diode L3, a fourth resistor R4, a fourth light-emitting diode L4, a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4.
The 2 nd pin of the first power switch S1 is connected to the first end of the fuse FU, the second end of the fuse FU is connected to the anode of the battery E, the cathode of the battery E is connected to the 5 th pin of the first power switch S1, the 8 th pin of the first power switch S1 is connected to the 3 rd pin and the 10 th pin of the first detection switch K1, the 11 th pin of the first power switch S1 is connected to the 6 th pin and the 7 th pin of the first detection switch K1, the 1 st pin and the 4 th pin of the first power switch S1 are respectively connected to the 2 nd pin and the 5 th pin of the second power switch S2, the 3 rd pin of the first power switch S1 is respectively connected to the first ends of the first resistor R1 and the second resistor R2, the second end of the first resistor R1 is connected to the anode of the first light emitting diode L1, the cathode of the first light emitting diode L1 is connected to the 2 nd pin and the 9 th pin of the first detection switch K632, the second end of the second resistor R59692 is connected to the cathode of the second light emitting diode L2, and the second light emitting diode K2, the 6 th pin of the first power switch S1 is respectively connected with the cathodes of a first diode D1 and a second diode D2, the anode of the first diode D1 is respectively connected with the 5 th pin and the 12 th pin of a first detection switch K1, the anode of the second diode D2 is connected with the 5 th pin of a second detection switch K2, the 9 th pin of the first power switch S1 is connected with a first test pen G, and the 12 th pin of the first power switch S1 is connected with the 8 th pin of a second detection switch K2;
the 3 rd pin of the second power switch S2 is connected to the first ends of the third resistor R3 and the fourth resistor R4, the second end of the third resistor R3 is connected to the anode of the third led L3, the cathode of the third led L3 is connected to the 2 nd pin of the third detection switch K3, the second end of the fourth resistor R4 is connected to the anode of the fourth led L4, the cathode of the fourth led L4 is connected to the 8 th pin of the third detection switch K3, the 6 th pin of the second power switch S2 is connected to the cathodes of the third diode D3 and the fourth diode D4, the anode of the third diode D3 is connected to the 5 th pin of the third detection switch K3, the anode of the fourth diode D4 is connected to the 11 th pin of the third detection switch K3, the 7 th and 10 th pins of the second power switch S2 are connected to the second test pen C and the second test pen E468 of the second test pen, and the second pin 464 of the second test switch K464, the 11 th pin of the second power switch S2 is respectively connected with the 6 th, 9 th and 1 st pins of the second detection switch K2;
the 8 th pin of the first detection switch K1 is connected with the anode of a capacitor C, and the cathode of the capacitor C is connected with the 11 th pin of the first detection switch K1;
the 1 st pin of the third detection switch K3 is connected with the 6 th pin of the third detection switch K3 and the second test pen C, the 4 th pin of the third detection switch K3 is connected with the 3 rd pin, the 9 th pin, the 10 th pin and the first test pen G of the third detection switch K3, and the 7 th pin of the third detection switch K3 is connected with the 12 th pin of the third detection switch K3 and the third test pen E.
The shell of the IGBT fault diagnosis device comprises a bottom box and a box cover, wherein a first power switch S1, a second power switch S2, a first detection switch K1, a second detection switch K2, a third detection switch K3, a first light-emitting diode L1, a second light-emitting diode L2, a third light-emitting diode L3 and a fourth light-emitting diode L4 are mounted on the box cover.
And detecting the IGBT fault, respectively connecting a first test pen G, a second test pen C and a third test pen E to G, C and E poles of the IGBT, simultaneously dialing a first power switch S1 at the position of ON2, dialing a second power switch S2 at the position of ON1, and dialing a second test switch K2 at the position of ON 2. When the detection switch K1 is turned to ON2 bit, the first light-emitting diode L1 is bright, and the short circuit of the G and E poles of the IGBT can be judged; when the detection switch K1 is turned to ON2 bit, the first light-emitting diode L1 is not lighted, the second light-emitting diode L2 is lighted, and when the detection switch K1 is turned to ON1 bit, the second light-emitting diode L2 is turned off, so that the IGBT can be judged to be normal; when the detection switch K1 is turned to ON2 bit, the second light-emitting diode L2 is not lighted, and the fault and damage of the IGBT can be judged; or when the detection switch K1 is turned to ON2 bit, the second light emitting diode L2 is ON, and when the detection switch K1 is turned to ON1 bit, the second light emitting diode L2 is ON, and the IGBT fault damage can be judged.
The first test pen g, the second test pen C and the third test pen E are connected to g, C and E poles of the IGBT respectively, and meanwhile, the first power switch S1 is turned to be in an ON1 position, and the second power switch S2 is turned to be in an ON2 position. The third detection switch K3 is turned to ON1 or ON2, the third light-emitting diode L3 is bright, and the short circuit of the G and C poles of the IGBT can be judged; the fourth light emitting diode L4 is on, and it can be determined that g and E poles of the IGBT are broken and shorted.
Having thus described the principal features, advantages and working procedures of the present invention, it will be apparent to those skilled in the art that the foregoing embodiments and descriptions are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit or essential characteristics thereof, and all such changes and modifications are intended to be included within the scope of the appended claims.
Claims (3)
1. An IGBT fault diagnosis device is characterized in that: the device consists of a shell, a first test pen G, a second test pen C, a third test pen E, a first power switch, a second power switch, a first detection switch, a second detection switch, a third detection switch, a battery, a fuse, a capacitor, a first resistor, a first light-emitting diode, a second resistor, a second light-emitting diode, a third resistor, a third light-emitting diode, a fourth resistor, a fourth light-emitting diode, a first diode, a second diode, a third diode and a fourth diode; the second pin 2 of the first power switch is connected with the first end of the fuse, the second end of the fuse is connected with the anode of the battery, the cathode of the battery is connected with the 5 th pin of the first power switch, the 8 th pin of the first power switch is connected with the 3 rd and 10 th pins of the first detection switch, the 11 th pin of the first power switch is connected with the 6 th pin and the 7 th pin of the first detection switch, the 1 st pin and the 4 th pin of the first power switch are respectively connected with the 2 nd and the 5 th pins of the second power switch, the 3 rd pin of the first power switch is respectively connected with the first ends of the first resistor and the second resistor, the second end of the first resistor is connected with the anode of the first light-emitting diode, the cathode of the first light-emitting diode is connected with the 2 nd pin and the 9 th pin of the first detection switch, the second end of the second resistor is connected with the anode of the second light-emitting diode, the cathode of the second light-emitting diode is connected with the 2 nd pin of the second detection switch, the 6 th pin of the first power switch is respectively, the positive electrode of the first diode is respectively connected with the 5 th pin and the 12 th pin of the first detection switch, the positive electrode of the second diode is connected with the 5 th pin of the second detection switch, the 9 th pin of the first power switch is connected with the first test pen G, and the 12 th pin of the first power switch is connected with the 8 th pin of the second detection switch; the 3 rd pin of the second power switch is respectively connected with the first ends of the third resistor and the fourth resistor, the second end of the third resistor is connected with the anode of the third light-emitting diode, the cathode of the third light-emitting diode is connected with the 2 nd pin of the third detection switch, the second end of the fourth resistor is connected with the anode of the fourth light-emitting diode, the cathode of the fourth light-emitting diode is connected with the 8 th pin of the third detection switch, the 6 th pin of the second power switch is respectively connected with the cathodes of the third diode and the fourth diode, the anode of the third diode is connected with the 5 th pin of the third detection switch, the anode of the fourth diode is connected with the 11 th pin of the third detection switch, the 7 th pin and the 10 th pin of the second power switch are respectively connected with the second test pen C and the third test pen E, the 8 th pin of the second power switch is respectively connected with the 3 rd pin and the 4 th pin of the second detection switch, the 11 th pin of the second power switch is respectively connected with the 6 th pin, the 6 th pin of the, The 9 th and 1 st feet; the 8 th pin of the first detection switch is connected with the anode of the capacitor, and the cathode of the capacitor is connected with the 11 th pin of the first detection switch; the 1 st pin of the third detection switch is connected with the 6 th pin of the third detection switch and the second test pen C, the 4 th pin of the third detection switch is connected with the 3 rd pin, the 9 th pin, the 10 th pin and the first test pen G of the third detection switch, and the 7 th pin of the third detection switch is connected with the 12 th pin of the third detection switch and the third test pen E; the shell comprises a bottom box and a box cover, wherein a first power switch, a second power switch, a first detection switch, a second detection switch, a third detection switch, a first light-emitting diode, a second light-emitting diode, a third light-emitting diode and a fourth light-emitting diode are arranged on the box cover.
2. The IGBT fault diagnosis device according to claim 1, characterized in that: the power switch and the detection switch are rocker switches.
3. The IGBT fault diagnosis device according to claim 1, characterized in that: the device is powered by a direct current battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020366590.0U CN212134872U (en) | 2020-03-22 | 2020-03-22 | IGBT fault diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020366590.0U CN212134872U (en) | 2020-03-22 | 2020-03-22 | IGBT fault diagnosis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212134872U true CN212134872U (en) | 2020-12-11 |
Family
ID=73672500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020366590.0U Expired - Fee Related CN212134872U (en) | 2020-03-22 | 2020-03-22 | IGBT fault diagnosis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212134872U (en) |
-
2020
- 2020-03-22 CN CN202020366590.0U patent/CN212134872U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 |