CN203150430U - DC contactor arc extinguishing circuit - Google Patents
DC contactor arc extinguishing circuit Download PDFInfo
- Publication number
- CN203150430U CN203150430U CN 201320041689 CN201320041689U CN203150430U CN 203150430 U CN203150430 U CN 203150430U CN 201320041689 CN201320041689 CN 201320041689 CN 201320041689 U CN201320041689 U CN 201320041689U CN 203150430 U CN203150430 U CN 203150430U
- Authority
- CN
- China
- Prior art keywords
- contactor
- circuit
- arc extinguishing
- switch
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Relay Circuits (AREA)
Abstract
A DC contactor arc extinguishing circuit comprises an arc extinguishing loop and a control circuit; a triode and a voltage dependent resistor are connected in parallel and are then connected with an auxiliary switch in series to form the arc extinguishing loop, and the arc extinguishing loop is connected in parallel on two ends of a contactor main switch; and the control circuit comprises a triode drive circuit, an auxiliary switch drive circuit and a contactor main switch drive circuit. The arc extinguishing circuit thoroughly eliminates discharge sparks generated in contactor main switch motion; electric service life of DC large current contactor is greatly prolonged; and electromagnetic interferences are greatly reduced.
Description
Technical field
The utility model belongs to the contactor protective circuit, relates to direct current machinery contacts of contactor arc-suppression circuit.
Background technology
Contactor is of a great variety, all can produce electric spark during the contactless contactor of contact-carrying, and surrounding environment is caused electromagnetic interference, and contacts of contactor is caused calcination and damage, has a strong impact on the electrical endurance of contactor.High power DC machinery contactor is especially true, the high power DC machinery contactor electrical endurance of a lot of occasions is not and one of the percentage of mechanical endurance, therefore high power DC machinery contactor often adopts various arc extinguishing technology, the most advanced, effect is best is that vacuum adds the magnetic blow-out technical scheme, but also just alleviated contacts of contactor sparking problem, fundamentally do not addressed this problem.
Summary of the invention
The utility model provides a kind of arc-suppression circuit of thorough solution D.C. contactor switch sparking.
The technical scheme that the utility model adopts is:
A kind of D.C. contactor arc-suppression circuit comprises: blow-out circuit and control circuit.Described blow-out circuit include a parallel connection triode and piezo-resistance, be composed in series with an auxiliary switch again, be installed in parallel the switch ends at the contactor main switch.Described control circuit comprises transistor drive circuit, auxiliary switch drive circuit, contactor main switch drive circuit.The D.C. contactor switching signal is accepted and carried out to described control circuit.
Arc-suppression circuit of the present utility model is when the contactor off-state, auxiliary switch, triode, contactor main switch all are in off-state, when control circuit is received close commands, and at first closed auxiliary switch, drive the triode conducting again, more closed contactor main switch; When control circuit is received ON-and OFF-command, at first disconnect the contactor main switch, drive triode again and close, disconnect auxiliary switch again.
Be not very high occasion to the switch leakage current requirement, auxiliary switch can direct short-circuit, and triode should adopt the IGBT pliotron.
As seen, sparking voltage when arc-suppression circuit of the present utility model makes the action of contactor main switch has only the forward conduction voltage drop of a triode, the discharge spark that has caused when thoroughly having eliminated the action of contactor main switch, the electrical endurance of D.C. high-current contactor is lengthened greatly, and electromagnetic interference descends greatly.This arc-control device of while, volume is little, production technology is simple, be particularly suitable for batch process.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is an embodiment of a kind of D.C. contactor arc-suppression circuit of providing of the utility model.
Embodiment
With reference to figure 1, embodiment of the present utility model includes blow-out circuit 2 and control circuit 3.Described blow-out circuit 2 comprises that triode 22 is in parallel with piezo-resistance 23, then is composed in series with auxiliary selenoid switch 21, and receives the switch ends of contactor main switch 1; Control circuit 3 includes triode 22 drive circuits 31, contactor main switch 1 coil driver 32, auxiliary selenoid switch 21 coil drivers 33; Control circuit 3 is accepted contactless contactor order KC, drives triode 22, contactor main switch 1 and 21 work of auxiliary selenoid switch, finishes the contactless contactor action.
The major loop of embodiment of the present utility model is from A+ to A-, when contactor main switch 1 and auxiliary selenoid switch 21 all disconnect, it is off-state, this moment, control circuit 3 was received the close commands of KC, control circuit 3 is by drive circuit 33 closed auxiliary selenoid switches 21, and drive triode 22 conductings by drive circuit 31 simultaneously, after the auxiliary selenoid switch 21 complete closures, control circuit 3 is by drive circuit 32 closed contactor main switches 1, and major loop A+ is to the complete conducting of A-; This moment, control circuit 3 was received the ON-and OFF-command of KC, control circuit 3 disconnects contactor main switch 1 by drive circuit 32, after contactor main switch 1 disconnects fully, control circuit 3 drives triode 22 by drive circuit 31 and disconnects, disconnect auxiliary selenoid switch 21 by drive circuit 33 simultaneously, major loop A+ disconnects fully to A-.
Certainly, in the occasion not high to the switch leakage current requirement, auxiliary selenoid switch 21 can be by short circuit.
Preferably, for the high power DC contactor, above-mentioned triode 22 adopts IGBT series pliotron.
Claims (4)
1. D.C. contactor arc-suppression circuit, comprise blow-out circuit and control circuit, it is characterized in that: described blow-out circuit have a parallel connection triode and piezo-resistance, be composed in series with an auxiliary switch again, be installed in parallel the switch ends at the contactor main switch.
2. a kind of D.C. contactor arc-suppression circuit according to claim 1, it is characterized in that: described control circuit comprises transistor drive circuit, auxiliary switch drive circuit, contactor main switch drive circuit.
3. a kind of D.C. contactor arc-suppression circuit according to claim 1, it is characterized in that: described auxiliary switch can be by short circuit.
4. a kind of D.C. contactor arc-suppression circuit according to claim 1 is characterized in that: described triode preferentially adopts IBGT series pliotron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041689 CN203150430U (en) | 2013-01-25 | 2013-01-25 | DC contactor arc extinguishing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041689 CN203150430U (en) | 2013-01-25 | 2013-01-25 | DC contactor arc extinguishing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150430U true CN203150430U (en) | 2013-08-21 |
Family
ID=48977939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041689 Expired - Fee Related CN203150430U (en) | 2013-01-25 | 2013-01-25 | DC contactor arc extinguishing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971964A (en) * | 2013-01-25 | 2014-08-06 | 刘爱民 | Arc extinguishing circuit of direct-current contactor |
| CN106783396A (en) * | 2016-03-14 | 2017-05-31 | 广州市金矢电子有限公司 | Isolated arc-control device and Switch without electric arc |
-
2013
- 2013-01-25 CN CN 201320041689 patent/CN203150430U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971964A (en) * | 2013-01-25 | 2014-08-06 | 刘爱民 | Arc extinguishing circuit of direct-current contactor |
| CN106783396A (en) * | 2016-03-14 | 2017-05-31 | 广州市金矢电子有限公司 | Isolated arc-control device and Switch without electric arc |
| CN106783396B (en) * | 2016-03-14 | 2019-12-24 | 广州市金矢电子有限公司 | Isolated arc extinguishing device and arc-free switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203367173U (en) | Three-in-one hard connection magnetic latching relay | |
| CN203150430U (en) | DC contactor arc extinguishing circuit | |
| CN202217622U (en) | Relay arc extinguishing circuit | |
| CN204289249U (en) | The vacuum interrupter of novel double-movable mechanism | |
| CN207743137U (en) | A kind of voltage-resistant switch device | |
| CN204289246U (en) | A kind of vacuum interrupter of subsidiary operating mechanism | |
| CN203690213U (en) | Non-arcing DC contactor | |
| CN103247475A (en) | Constant-magnetic maintaining AC contactor control circuit and control method thereof | |
| CN107202955B (en) | Device and method for indirectly detecting on-off state of vacuum contactor | |
| CN103971964A (en) | Arc extinguishing circuit of direct-current contactor | |
| CN201845710U (en) | Arc extinguishing circuit of AC relay | |
| CN204761017U (en) | Electric automobile power battery contactor protection device | |
| CN204257560U (en) | A kind of permanent magnetic drive circuit breaker | |
| CN104953557A (en) | Protection device for power battery contactor of electric automobile and control method of protection device | |
| WO2018082384A1 (en) | Movable and stationary contact device for disconnect switch | |
| CN107086150B (en) | It is a kind of to rotate the electrode structure cut-off | |
| CN104078281A (en) | Non-arcing direct current contactor | |
| CN202454487U (en) | Permanent magnet operating circuit breaker device | |
| CN203839288U (en) | Control circuit for improving response speed of electromagnetic contactor | |
| CN202487497U (en) | Isolation drive circuit of direct current contactor | |
| CN205452158U (en) | Intelligent quick permanent magnetism vacuum circuit breaker | |
| CN204257561U (en) | A kind of permanent magnetic drive circuit breaker | |
| CN204809068U (en) | Double break point DC electromagnetic contactor | |
| CN104485265B (en) | A kind of permanent magnetic drive breaker | |
| CN203521239U (en) | Novel high-voltage magnetic device module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20170125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |