CN101710548A - Blow-out circuit of relay and method - Google Patents
Blow-out circuit of relay and method Download PDFInfo
- Publication number
- CN101710548A CN101710548A CN200910188639A CN200910188639A CN101710548A CN 101710548 A CN101710548 A CN 101710548A CN 200910188639 A CN200910188639 A CN 200910188639A CN 200910188639 A CN200910188639 A CN 200910188639A CN 101710548 A CN101710548 A CN 101710548A
- Authority
- CN
- China
- Prior art keywords
- relay
- oxide
- semiconductor
- metal
- active switch
- 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.)
- Pending
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The invention discloses a blow-out circuit of a relay and a method. The circuit comprises bidirection blocking active switches connected in series on both ends of a contact of a relay and a drive unit. When the relay needs switching on, the drive unit is used for driving the bidirection blocking active switches to be turned on firstly, and then driving the relay to be turned on; when the relay needs cutting off, the drive unit is used for driving the bidirection blocking active switches to be turned on firstly, then driving the relay to be cut off, and then driving the bidirection blocking active switches to be turned off. The method comprises the following steps of: connecting the bidirection blocking active switches in series on both ends of the contact of the relay; when the relay is switched on, firstly enabling the bidirection blocking active switches to be turned on and then enabling the relay to be turned on; when the relay is cut off, firstly enabling the bidirection blocking active switches to be turned on and then enabling the relay to be cut off, and then cutting off the bidirection blocking active switches. The invention can realize the blowout of the relay in disjunction and meanwhile ensures bidirection current blocking.
Description
Technical field
The present invention relates to electrical equipment technical field, relate in particular to a kind of blow-out circuit of relay and method.
Background technology
Relay particularly is easy to during disjunction produce electric arc at the contact point place under the direct current occasion of high-voltage great-current under the DC application occasion, causes the damage of relay.Traditional arc quenching method is to utilize the arc-suppression circuit of being made up of resistance, electric capacity and switch etc., utilizes the charging voltage overshoot of electric capacity, arc extinguishing when the relay disjunction.But this arc-suppression circuit is in relay disconnection process, and the voltage at arc extinguishing electric capacity two ends can very fast increase, and the reliability of this arc-suppression circuit can be subjected to bigger influence when load current is big, and the capacity to electric capacity has very big requirement simultaneously.In addition, the applied occasion of traditional arc quenching method all is the direct current occasion, and electric current all is an one-way flow under the direct current occasion, and therefore traditional arc quenching method is only realized the blocking-up that electric current is unidirectional.
Summary of the invention
Main purpose of the present invention is exactly at the deficiencies in the prior art, and a kind of blow-out circuit of relay is provided, and realizes relay arc extinguishing when disjunction, guarantees that also forward still is that reverse electric current all can't flow through after relay and auxiliary switch disconnection thereof.
Another object of the present invention provides a kind of relay arc-suppressing method, realizes the arc extinguishing of relay when disjunction, and guarantees the bidirectional current blocking-up.
For achieving the above object, the present invention is by the following technical solutions:
A kind of blow-out circuit of relay comprises:
Be connected in the two-way blocking-up active switch at the two ends, contact of relay in parallel; With
Driver element when described relay need be opened, is used to drive the first conducting of described two-way blocking-up active switch, drives described relay conducting again; When described relay need turn-off, be used for driving earlier the conducting of described two-way blocking-up active switch, drive described relay again and turn-off, drive described two-way blocking-up active switch then and turn-off.
Preferably, described two-way blocking-up active switch comprises first metal-oxide-semiconductor (Metal-Oxide Semiconductor field effect transistor), first diode and second diode, contact one end of electrical equipment is succeeded in the drain electrode of described first metal-oxide-semiconductor, the source electrode of described first metal-oxide-semiconductor connects the anode of described first diode and described second diode, the negative electrode of described first diode connects the drain electrode of described first metal-oxide-semiconductor, and the negative electrode of described second diode is succeeded the contact other end of electrical equipment.
Preferably, described two-way blocking-up active switch comprises first metal-oxide-semiconductor, second metal-oxide-semiconductor, first diode and second diode, contact one end of electrical equipment is succeeded in the drain electrode of described first metal-oxide-semiconductor, the contact other end of electrical equipment is succeeded in the drain electrode of described second metal-oxide-semiconductor, described first, the source electrode of two metal-oxide-semiconductors joins, described first, the grid of two metal-oxide-semiconductors joins, the anode of described first diode connects the source electrode of described first metal-oxide-semiconductor, the negative electrode of described first diode connects the drain electrode of described first metal-oxide-semiconductor, the anode of described second diode connects the source electrode of described second metal-oxide-semiconductor, and the negative electrode of described second diode connects the drain electrode of described second metal-oxide-semiconductor.
A kind of relay arc-suppressing method is characterized in that, may further comprise the steps:
1) the two-way blocking-up active switch that is connected in parallel at the two ends, contact of relay;
When 2) opening relay, make the conducting of two-way blocking-up active switch make the relay conducting more earlier;
When 3) turn-offing relay, make the conducting of two-way blocking-up active switch that relay is turn-offed earlier, turn-off the two-way blocking-up active switch then.
Preferably, after making the relay conducting, also comprise described step 2): turn-off the two-way blocking-up active switch.
Beneficial technical effects of the present invention is:
According to the present invention, at the two ends, contact of relay and be connected to the two-way blocking-up active switch,, just can realize the arc extinguishing of relay when disjunction by the turn-on and turn-off of suitable control two-way blocking-up active switch.When relay needs conducting; make the conducting of two-way blocking-up active switch earlier; this moment, electric current can be powered through the two-way blocking-up active switch earlier to the back-end; the relay both end voltage equals the voltage at two-way blocking-up active switch two ends; after time-delay a period of time, make the relay conducting again; this moment, relay belonged to the no-voltage adhesive, had effectively protected the reliability of contact of relay.When relay need turn-off, make the conducting of two-way blocking-up active switch earlier, relay is turn-offed, because the two-way blocking-up active switch is in conducting state, so relay is no-voltage, Zero current disjunction.Thereby, reliable arc extinguishing when the present invention can be implemented in the relay disjunction, and guarantee after relay and the disconnection of two-way blocking-up active switch, utilize the two-way blocking-up of two-way blocking-up active switch, make that forward still is that reverse electric current all can't flow through, realize the two-way blocking-up of electric current, thus direct current with exchange occasion under all can use.
Description of drawings
Fig. 1 is the circuit theory diagrams of a kind of embodiment of blow-out circuit of relay of the present invention;
Fig. 2 is the circuit theory diagrams of the another kind of embodiment of blow-out circuit of relay of the present invention;
Fig. 3 is the flow chart of a kind of embodiment of relay arc-suppressing method of the present invention.
Embodiment
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Blow-out circuit of relay comprises two-way blocking-up active switch and driver element, and this two-way blocking-up active switch is connected in the two ends, contact of relay in parallel as the auxiliary switch of relay; This driver element when described relay need be opened, is used to drive the first conducting of described two-way blocking-up active switch, drives described relay conducting again; When described relay need turn-off, be used for driving earlier the conducting of described two-way blocking-up active switch, drive described relay again and turn-off, drive described two-way blocking-up active switch then and turn-off.
Please refer to Fig. 1, in one embodiment, this two-way blocking-up active switch comprises the first metal-oxide-semiconductor Q1, the first diode D1 and the second diode D2, an end of electrical equipment RLY contact is succeeded in the drain electrode of the first metal-oxide-semiconductor Q1, the source electrode of the first metal-oxide-semiconductor Q1 connects the anode of the first diode D1 and the second diode D2, the negative electrode of the first diode D1 connects the drain electrode of the first metal-oxide-semiconductor Q1, and the negative electrode of the second diode D2 is succeeded the other end of electrical equipment RLY contact.Driver element (not shown) provides the grid of drive signal Driver1 to the first metal-oxide-semiconductor Q1, and drive signal Driver2 is provided the drive end to relay.
When relay R LY needs conducting; driver element provides drive signal Driver1 earlier and drives the first metal-oxide-semiconductor Q1 conducting; this moment, electric current can be powered through the first metal-oxide-semiconductor Q1 earlier to the back-end; the relay both end voltage equals the drain electrode of the first metal-oxide-semiconductor Q1 and the voltage between the source electrode; after time-delay a period of time; driver element provides drive signal Driver2 again and drives relay R LY conducting, and this moment, relay belonged to the no-voltage adhesive, had effectively protected the reliability of contact of relay.When relay R LY need turn-off, driver element drove the first metal-oxide-semiconductor Q1 conducting earlier, drove relay R LY again and turn-offed, because the first metal-oxide-semiconductor Q1 is in conducting state, so relay is no-voltage, Zero current disjunction.Driver element closes to have no progeny at relay R LY and drives the disconnection of two-way blocking-up active switch again, and then forward still is that reverse electric current all can't flow through.As shown in Figure 1, as relay R LY, when the two-way blocking-up active switch disconnects, first diode D1 and the second diode D2 to top in parallel with relay R LY can stop flowing of forward or reverse current, reach the effect of electric current two-way blocking-up.
Though the metal-oxide-semiconductor among Fig. 1 is the NMOS pipe, adopt the PMOS pipe also can realize.In addition, the first diode D1 both can adopt independently diode, also can be the body diode of the first metal-oxide-semiconductor Q1.
Should illustrate that the driver element among the present invention is a general notion, it can comprise multiple corresponding driving circuit, and non-limiting relay and two-way blocking-up active switch are all by providing drive signal with one drive circuit.
Please refer to Fig. 2, in another kind of embodiment, this two-way blocking-up active switch comprises the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the first diode D1 and the second diode D2.Contact one end of electrical equipment RLY is succeeded in the drain electrode of the first metal-oxide-semiconductor Q1, and the contact other end of electrical equipment RLY is succeeded in the drain electrode of the second metal-oxide-semiconductor Q2.The source electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 joins, and the grid of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 joins.The anode of the first diode D1 connects the source electrode of the first metal-oxide-semiconductor Q1, and the negative electrode of the first diode D1 connects the drain electrode of the first metal-oxide-semiconductor Q1.The anode of the second diode D2 connects the source electrode of the second metal-oxide-semiconductor Q2, and the negative electrode of the second diode D2 connects the drain electrode of the second metal-oxide-semiconductor Q2.Driver element (not shown) provides the grid of drive signal Driver1 to the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and drive signal Driver2 is provided the drive end to relay.
Be with last embodiment difference, two-way blocking-up active switch in the present embodiment has comprised two switching tubes, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, therefore the break-make control of two-way blocking-up active switch is promptly changed into drive controlling to two switching tubes from the drive controlling to a switching tube, but with regard between two-way blocking-up active switch and the relay, present embodiment the two the driving sequential and the driving sequential of last embodiment be identical.
The embodiment of the invention also provides a kind of relay arc-suppressing method at above-mentioned a kind of blow-out circuit of relay, describes in detail below in conjunction with accompanying drawing.
Referring to Fig. 3, this figure is the flow chart of the relay arc-suppressing method that provides of the embodiment of the invention.
Can comprising the steps: of the relay arc-suppressing method that present embodiment provides
Step S1, the two-way blocking-up active switch is connected in parallel at the relay contact two ends;
Step S2, when relay needs conducting, issue the Continuity signal Driver 1 of bidirectional current blocking swtich earlier, this moment, electric current can be powered to the back-end through the bidirectional current blocking swtich, and the relay both end voltage equals voltage between the source drain of bidirectional current blocking swtich;
Step S3, issue the Continuity signal Driver2 of relay after a period of time again in time-delay, this moment, relay belonged to the no-voltage adhesive, had effectively protected the reliability of contact of relay;
After this issue the cut-off signals Driver1 (also can not send out cut-off signals) of bidirectional current blocking swtich;
Step S4, when relay need turn-off, issue the Continuity signal Driver1 (, then not needing this step) of bidirectional current blocking swtich earlier if in previous step, do not turn-off the bidirectional current blocking swtich;
This step is optionally, needs only when guaranteeing that relay turn-offs, and the bidirectional current blocking swtich is getting final product of conducting.
Step S5, then issue the cut-off signals Driver2 of relay again, because the bidirectional current blocking swtich is in conducting state, so relay is no-voltage, Zero current disjunction;
Step S6, relay close to have no progeny and issue the cut-off signals Driver1 of bidirectional current blocking swtich at last again.
Need to prove do not have sequencing between step S2-S3 and the step S4-S6, as long as guarantee relay when turn-offing, the bidirectional current blocking swtich is in conducting state; When relay closes, the bidirectional current blocking swtich is closed earlier to get final product.
Arc extinguishing when the present invention not only can realize the relay disjunction, and, can also guarantee after relay and the disconnection of two-way blocking-up active switch, utilize the two-way blocking-up of two-way blocking-up active switch, for example utilize two the diodes to top in parallel in the above-described embodiments with relay, make that forward still is that reverse electric current all can't flow through, realized the two-way blocking-up of electric current, thus direct current with exchange occasion under all can use.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For example, can also adopt other customary means of this area to realize the two-way blocking-up of two-way blocking-up active switch except adopting two diodes to the top.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a blow-out circuit of relay is characterized in that, comprising:
Be connected in the two-way blocking-up active switch at the two ends, contact of relay in parallel; With
Driver element when described relay need be opened, is used to drive the first conducting of described two-way blocking-up active switch, drives described relay conducting again; When described relay need turn-off, be used for driving earlier the conducting of described two-way blocking-up active switch, drive described relay again and turn-off, drive described two-way blocking-up active switch then and turn-off.
2. blow-out circuit of relay as claimed in claim 1, it is characterized in that, described two-way blocking-up active switch comprises first metal-oxide-semiconductor, first diode and second diode, an end of appliance contact is succeeded in the drain electrode of described first metal-oxide-semiconductor, the source electrode of described first metal-oxide-semiconductor connects the anode of described first diode and the anode of described second diode, the negative electrode of described first diode connects the drain electrode of described first metal-oxide-semiconductor, and the negative electrode of described second diode connects the other end of described relay contact.
3. blow-out circuit of relay as claimed in claim 1, it is characterized in that, described two-way blocking-up active switch comprises first metal-oxide-semiconductor, second metal-oxide-semiconductor, first diode and second diode, an end of appliance contact is succeeded in the drain electrode of described first metal-oxide-semiconductor, the other end of appliance contact is succeeded in the drain electrode of described second metal-oxide-semiconductor, the source electrode of described first metal-oxide-semiconductor and second metal-oxide-semiconductor joins, the grid of described first metal-oxide-semiconductor and second metal-oxide-semiconductor joins, the anode of described first diode connects the source electrode of described first metal-oxide-semiconductor, the negative electrode of described first diode connects the drain electrode of described first metal-oxide-semiconductor, the anode of described second diode connects the source electrode of described second metal-oxide-semiconductor, and the negative electrode of described second diode connects the drain electrode of described second metal-oxide-semiconductor.
4. blow-out circuit of relay according to claim 2 is characterized in that, described first metal-oxide-semiconductor is the NMOS pipe.
5. blow-out circuit of relay according to claim 3 is characterized in that, described first metal-oxide-semiconductor and second metal-oxide-semiconductor are the NMOS pipe.
6. a relay arc-suppressing method is characterized in that, may further comprise the steps:
1) the two-way blocking-up active switch that is connected in parallel at the two ends of relay contact;
When 2) opening relay, make the conducting of described two-way blocking-up active switch make described relay conducting more earlier;
When 3) turn-offing relay, make the conducting of described two-way blocking-up active switch that described relay is turn-offed earlier, turn-off described two-way blocking-up active switch then.
7. relay arc-suppressing method as claimed in claim 6 is characterized in that, described step 2) in after making the relay conducting, also comprise: turn-off described two-way blocking-up active switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188639A CN101710548A (en) | 2009-12-01 | 2009-12-01 | Blow-out circuit of relay and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188639A CN101710548A (en) | 2009-12-01 | 2009-12-01 | Blow-out circuit of relay and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101710548A true CN101710548A (en) | 2010-05-19 |
Family
ID=42403328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910188639A Pending CN101710548A (en) | 2009-12-01 | 2009-12-01 | Blow-out circuit of relay and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101710548A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969006A (en) * | 2010-08-19 | 2011-02-09 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN105103254A (en) * | 2012-12-18 | 2015-11-25 | 特密·格拉特步股份有限公司 | Temperature protection circuit |
| CN105743480A (en) * | 2014-12-31 | 2016-07-06 | 英飞凌科技奥地利有限公司 | Bidirectionally blocking electronic switch arrangement |
| CN106970560A (en) * | 2017-04-01 | 2017-07-21 | 西安特锐德智能充电科技有限公司 | A kind of two-way on-off circuit being applied in straight-flow system |
| US10748724B2 (en) | 2015-12-17 | 2020-08-18 | Huawei Technologies Co., Ltd. | Power-on/off drive circuit and method for controlling power-on/off drive circuit |
| WO2020259424A1 (en) * | 2019-06-23 | 2020-12-30 | 郭桥石 | Arc-extinguishing power device drive apparatus |
| WO2021129562A1 (en) * | 2019-12-23 | 2021-07-01 | 郭桥石 | Arc extinction switch and method for using same |
| CN113274216A (en) * | 2021-04-29 | 2021-08-20 | 上海惠上电子技术有限公司 | Multifunctional bed control device and circuit |
| CN115332013A (en) * | 2022-10-13 | 2022-11-11 | 深圳市长天智能有限公司 | High-voltage direct-current intelligent relay control circuit |
-
2009
- 2009-12-01 CN CN200910188639A patent/CN101710548A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969006B (en) * | 2010-08-19 | 2013-12-18 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN101969006A (en) * | 2010-08-19 | 2011-02-09 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN105103254B (en) * | 2012-12-18 | 2018-07-06 | 特密·格拉特步股份有限公司 | Temperature protection circuit |
| CN105103254A (en) * | 2012-12-18 | 2015-11-25 | 特密·格拉特步股份有限公司 | Temperature protection circuit |
| US10027109B2 (en) | 2012-12-18 | 2018-07-17 | Thermik Geraetebau Gmbh | Thermal protection circuit |
| CN105743480A (en) * | 2014-12-31 | 2016-07-06 | 英飞凌科技奥地利有限公司 | Bidirectionally blocking electronic switch arrangement |
| US10748724B2 (en) | 2015-12-17 | 2020-08-18 | Huawei Technologies Co., Ltd. | Power-on/off drive circuit and method for controlling power-on/off drive circuit |
| CN106970560A (en) * | 2017-04-01 | 2017-07-21 | 西安特锐德智能充电科技有限公司 | A kind of two-way on-off circuit being applied in straight-flow system |
| WO2020259424A1 (en) * | 2019-06-23 | 2020-12-30 | 郭桥石 | Arc-extinguishing power device drive apparatus |
| CN113366595A (en) * | 2019-06-23 | 2021-09-07 | 郭桥石 | Arc extinguishing power device driving device |
| CN113366595B (en) * | 2019-06-23 | 2023-08-22 | 广州市金矢电子有限公司 | Arc extinguishing power device driving device |
| WO2021129562A1 (en) * | 2019-12-23 | 2021-07-01 | 郭桥石 | Arc extinction switch and method for using same |
| CN113274216A (en) * | 2021-04-29 | 2021-08-20 | 上海惠上电子技术有限公司 | Multifunctional bed control device and circuit |
| CN113274216B (en) * | 2021-04-29 | 2022-03-25 | 上海惠上电子技术有限公司 | Multifunctional bed control device and circuit |
| CN115332013A (en) * | 2022-10-13 | 2022-11-11 | 深圳市长天智能有限公司 | High-voltage direct-current intelligent relay control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101710548A (en) | Blow-out circuit of relay and method | |
| CN204425031U (en) | A kind of intelligent diverter switch | |
| CN104979796B (en) | A kind of precharge type high speed d-c circuit breaker and its control method | |
| CN105356435A (en) | Bidirectional-breaking bridge-type circuit breaker and application method thereof | |
| CN102074394B (en) | Arc-extinguishing switch and switching method thereof | |
| CN111630620B (en) | Switching device | |
| WO2010139190A1 (en) | Surge-free arc extinguishing device | |
| CN103208386A (en) | High-voltage direct-current circuit breaker based on double switches | |
| CN104009450B (en) | Block combiner high voltage DC breaker | |
| CN106711930A (en) | DC circuit breaker and control method thereof | |
| CN103325591A (en) | Arc-control device comprising controllable switch and arc-control method of direct-current mechanical switch | |
| US9490801B2 (en) | Rapid cutoff device and operation method for SCR AC switches | |
| JP6713660B2 (en) | Arc-free current switchgear | |
| CN101783666A (en) | Reinforced-depletion-mode part combination switch circuit capable of being reliably turned off | |
| TWI528714B (en) | Rapid cutoff device and operation method for scr dc switches | |
| JP6143615B2 (en) | DC switch | |
| CN109861189B (en) | Arc extinguishing type low-voltage direct current breaker | |
| CN106300237A (en) | A kind of magnetic field impulse transfer type is without arc dc circuit breaker | |
| CN106253888A (en) | Bi-directional MOS FET switch and multiplexer | |
| CN203552988U (en) | High-voltage direct-current circuit breaker based on double switches | |
| CN202905606U (en) | Mechanical and electronic combined relay | |
| CN202307406U (en) | DC bidirectionally driven electromagnet | |
| CN108923662A (en) | A kind of push-pull converter circuit and its control method | |
| CN103326328B (en) | Comprise arc-control device and the arc-suppressing method of gate-controlled switch | |
| CN209389778U (en) | A kind of bypass type supplies power with double circuit switching system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100519 |