CN104966633B - Switch module - Google Patents
Switch module Download PDFInfo
- Publication number
- CN104966633B CN104966633B CN201510260273.4A CN201510260273A CN104966633B CN 104966633 B CN104966633 B CN 104966633B CN 201510260273 A CN201510260273 A CN 201510260273A CN 104966633 B CN104966633 B CN 104966633B
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- China
- Prior art keywords
- switch
- switch module
- igct
- resistance
- electric capacity
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/42—Impedances connected with contacts
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- Electronic Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a kind of switch module, belong to electric switch field.The switch module includes：At least two switches, electric capacity, first resistor and the second resistance of series connection, at least two switches of the series connection include at least one first switch and at least one second switch, at least one second switch series connection, in parallel with least one described second switch after the first resistor and second resistance series connection, the electric capacity is in parallel with the second resistance.
Description
Technical field
The present invention relates to electric switch technical field, more particularly to a kind of switch module.
Background technology
Electric arc is a kind of gas discharge phenomenon, is that electric current passes through the moment fire produced by some dielectrics (such as air)
Flower.When using electric current is switched off, if circuit voltage is not less than 10-20 volts, electric current is not less than 80-100 milliamperes, opened
Electric arc will be produced between the contact of pass, so as to be damaged to switch contact.Therefore, the power supply occasion of high voltage, is used
Switch must be the switch with arc-suppression function.
Existing arc-suppressing switch is mainly made up of electric capacity and switch, electric capacity and switch in parallel, and after switching off, electric capacity is opened
Begin to charge and reduce the electric current of switch contact, so as to play a part of arc extinguishing.
But, upon opening, the electric capacity in arc-suppressing switch is still likely to form electrical connection to existing arc-suppressing switch so that electricity
Stream is continued through, and influence is produced on load equipment, while threatening the safety of Operation and Maintenance personnel.
The content of the invention
Electrical connection is still likely to form in order to solve the electric capacity in arc-suppressing switch in the prior art so that electric current continues logical
Cross, on load equipment produce influence, while threaten Operation and Maintenance personnel it is safe the problem of, the embodiments of the invention provide one kind
Switch module.The technical scheme is as follows：
The embodiments of the invention provide a kind of switch module, the switch module includes：
At least two switches, electric capacity, first resistor and the second resistance of series connection, at least two switches of the series connection include
At least one first switch and at least one second switch, at least one described second switch are sequentially connected, the first resistor
In parallel with least one described second switch after being connected with the second resistance, the electric capacity is in parallel with the second resistance；Institute
Stating switch module also includes IGCT and drive circuit, and the IGCT is connected between at least two switch and load,
And the anode of the IGCT is connected with described at least two switches, three poles of the drive circuit and the IGCT connect respectively
Connect, the drive circuit is used for the anode and cathode voltage for obtaining the IGCT, and in the anode and the moon of the IGCT
The voltage difference of interpolar is reached after predetermined value setting time, is sent drive signal to the gate pole of the IGCT, is connected the brilliant lock
Pipe.
In a kind of implementation of the embodiment of the present invention, the resistance of the first resistor is 0.5~1000 Europe.
In another implementation of the embodiment of the present invention, the resistance of the second resistance is 10~5000 kilo-ohms.
In another implementation of the embodiment of the present invention, the switch module also includes diode, the diode
It is in parallel with the first resistor, and the negative electrode of the diode connects the electric capacity.
In another implementation of the embodiment of the present invention, the drive circuit is processor.
In another implementation of the embodiment of the present invention, at least one described second switch located at it is described at least one
Between first switch and the IGCT.
In another implementation of the embodiment of the present invention, the switch module includes multiple first switches and many
The individual second switch.
In another implementation of the embodiment of the present invention, the switch module includes a first switch and one
The individual second switch.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Switch during beginning in first switch and second switch is in normal attracting state；When needing to disconnect, first disconnect
The contact of first switch, first switch is still within conducting state due to arcing；The contact of second switch, second are disconnected again
When switching off, because first resistor, electric capacity assume responsibility for the effect of current channel, the electric current stream of the former contact by second switch
To first resistor, electric capacity, the condition of the contact starting the arc of second switch is eliminated, the contact of second switch disconnects without electric arc.Work as electricity
Electric current reduces after capacity charge to a certain extent, because the electric current on electric capacity can be by the contact of first switch, and when this electric current subtracts
It is small to after tens of milliamperes, the contact electric arc also Lock-out of first switch, contact is disconnected, and now whole switch module has been completed
Break function.After whole switch module completes to disconnect, the energy stored on electric capacity is slowly discharged by second resistance.Above-mentioned
In the course of work, because second switch is not connected into arc extinguishing component (electric capacity, first resistor and second resistance), therefore when electric current subtracts
It is small to after tens of milliamperes, electric arc can nature extinguish and can realize being fully disconnected for load to realize that load is fully disconnected, it is ensured that
The electrical isolation of circuit, it is to avoid the electric capacity in arc-suppressing switch is still likely to form electrical connection in the prior art so that electric current
Brought safety problem is continued through, the switch module can be applied with requiring higher circuit to electrical isolation degree in addition,
Application is wider.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of circuit diagram of switch module provided in an embodiment of the present invention；
Fig. 2 is the circuit diagram of another switch module provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram of another switch module provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 provides a kind of circuit diagram of switch module, it is adaptable to high voltage circuit (such as 100-1000 volts), referring to Fig. 1,
The switch module includes：
At least two switches, electric capacity C1, first resistor R1 and the second resistance R2 connected, at least two switch bags of series connection
At least one first switch K1 and at least one second switch K2 are included, at least one second switch K2 is sequentially connected, first resistor
In parallel with least one second switch K2 after R1 and second resistance R2 series connection, electric capacity C1 is in parallel with second resistance R2.Wherein, first
K1 and second switch K2 is switched to constitute by some switches, and switch is mechanical switch.
Wherein, electric capacity C1 is second switch K2 extinguishing arc electric capacity, and the size of its capacity can be according to the maximum functional of circuit
Electric current is selected；First resistor R1 is current-limiting resistance, and its resistance is smaller, for example, 0.5~1000 ohm；Second resistance R2 is electric capacity
Bleeder resistance, second resistance R2 resistances are larger, for example, 10~5000 kilohms, and the second electricity is passed through with the energy for realizing electric capacity C1
R2 is hindered compared with On The Drug Release.
The switch module operation principle is：First switch K1 and second switch K2 is in normal attracting state during beginning；When
When needing to disconnect, first switch K1 contact is first disconnected, first switch K1 is still within conducting state due to arcing；Break again
Second switch K2 contact is opened, when second switch K2 disconnects, because first resistor R1, electric capacity C1 assume responsibility for the work of current channel
With current direction first resistor R1, the electric capacity C1 of the former contact by second switch K2, the contact for eliminating second switch K2 are risen
The condition of arc, second switch K2 contact disconnects without electric arc.Electric current reduces after electric capacity C1 charges to a certain extent, due to electric capacity
Electric current on C1 can be by first switch K1 contact, and after this electric current is reduced to tens of milliamperes, first switch K1 contact
Electric arc also Lock-out, contact disconnects, and now whole switch module has completed break function.When whole switch module completes disconnected
After opening, the energy stored on electric capacity C1 is slowly discharged by second resistance R2.In the above-mentioned course of work, due to second switch K2
Arc extinguishing component (electric capacity C1, first resistor R1 and second resistance R2) is not connected into, therefore after electric current is reduced to tens of milliamperes, electricity
Arc meeting nature extinguishes can realize being fully disconnected for load to realize that load is fully disconnected, it is ensured that the electrical isolation of circuit, keep away
The electric capacity in arc-suppressing switch is in the prior art exempted from and has still been likely to form electrical connection so that electric current continues through brought peace
Full problem, the switch module can be using with requiring higher circuit to electrical isolation degree in addition, and application is wider.
In the switch module that Fig. 1 is provided, the switch module can include multiple first switch K1 and multiple second switches
K2。
When the switch module includes multiple first switch K1, arc extinguishing component is across between multiple tandem taps, and this is multiple
Switch is when there is electric arc generation, and bigger negative resistance property is presented, so that effective work of this switch module in negative resistance superposition
Voltage is lifted at double, improves maximum working voltage and maximum operating currenbt that component is born so that the switch module has more
High reliability, practical value, and more effective energy.Switch module includes multiple second switch K2, further increases switches set
The electrical isolation intensity of part.
In the switch module that Fig. 1 is provided, the switch module can also only include a first switch K1 and one second
Switch K2.
Fig. 2 provides the circuit diagram of another switch module, and referring to Fig. 2, compared with the switch module that Fig. 1 is provided, this is opened
Pass component is also in parallel with first resistor R1 including diode D1, the second pole pipe D1, and diode D1 negative electrode connection electric capacity C1.
Diode D1 is in parallel with first resistor R1 so that electric capacity C1 charging processes have relatively low impedance, is conducive to subtracting rapidly
Low current, so as to further reduce the harm of electric arc, is more beneficial for the disappearance of electric arc.
In the switch module course of work, in addition to being lost caused by electric arc, there is bullet many times when contact is connected every time
Jump, it is microcosmic on be to connect repeatedly, this spring can cause electric capacity C1 repeated charges, electric capacity C1 plus the side effect of arc extinguishing component
Discharge current can be big to contact erosion, so as to substantially reduce the switch contact life-span.Therefore the embodiment of the present invention is also needed to from contact
Spring and the side effect of arc extinguishing component are accounted for, split to put capable protection into.Mainly there are following two aspects：
First, first resistor R1 is set.During second switch K2 contact web current jitter, first resistor R1 limitations
Discharge currents of the electric capacity C1 by second switch K2 contact, so as to play protection to contact；But first resistor R1 resistance is again
It is not too big, the normal of electric capacity C1 electric currents can be met and released, be that charging is prepared next time, so as to will not cause because electric current
Beat and produce electric arc, i.e., every time it is microcosmic on contact tripping when without electric arc produce.
Second, IGCT SCR is set, as shown in Figure 3.Fig. 3 provides another switch module of the embodiment of the present invention
Circuit diagram, the switch module and Fig. 2's differs only in, and the switch module also includes IGCT SCR and drive circuit 1, brilliant lock
Pipe SCR is connected between at least two switches and load, and IGCT SCR anode is connected with least two switches, driving electricity
Road 1 is connected respectively with IGCT SCR three poles, and drive circuit 1 is used for the anode and cathode voltage for obtaining IGCT SCR, and
After voltage difference between IGCT SCR anode and negative electrode reaches predetermined value setting time, send and drive to IGCT SCR gate pole
Dynamic signal, connects IGCT SCR.Wherein, drive circuit 1 can be processor.Certainly, drive circuit 1 can also be that other are hard
Part circuit or integrated circuit, the present invention are without limitation.
In the switch module that Fig. 3 is provided, at least one second switch K2 is located at least one first switch K1 and brilliant lock
Between pipe SCR.
Certainly, the embodiment of the present invention can also set up IGCT SCR and drive circuit 1 on the basis of Fig. 1, and it, which is connected, closes
System and principle are similar with Fig. 3, repeat no more here.
IGCT SCR is not involved in arc extinguishing, and IGCT SCR effect is that the above-mentioned bounce of solution and the side effect of arc extinguishing component are led
Cause the problem of contact loss of switch is increased.IGCT SCR causes switch to be connected in the case of no current, brilliant lock after switch connection
Pipe SCR automatic time delays are opened.Specifically, IGCT SCR conducting control power supply is obtained by the voltage difference of its own negative electrode, anode
, and the pattern of delay and running is designed as, that is, when voltage difference occur in IGCT SCR two ends, drive circuit starts to obtain
Power supply is obtained, and after delay after a while, drive circuit provides IGCT SCR driving triggering, connects IGCT
SCR.It is connection in the state of zero in load current to be so achieved that switch module.The contact of switch module is during connection
Beat, but now because no electric current flows through, so contact metal ablation will not be caused.And when IGCT SCR is connected,
The contact of whole switch module will not produce harm in the state stably turned on to contact.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of switch module, it is characterised in that the switch module includes：
At least two switches, electric capacity, first resistor and the second resistance of series connection, at least two switches of the series connection are included at least
One first switch and at least one second switch, at least one described second switch are sequentially connected, the first resistor and institute
State second resistance series connection after it is in parallel with least one described second switch, the electric capacity is in parallel with the second resistance；
The switch module also includes IGCT and drive circuit, and the IGCT is connected at least two switch and load
Between, and the anode of the IGCT be connected with described at least two switches, three poles of the drive circuit and the IGCT
Connect respectively, the drive circuit is used for the anode and cathode voltage for obtaining the IGCT, and in the sun of the IGCT
Voltage difference between pole and negative electrode is reached after predetermined value setting time, is sent drive signal to the gate pole of the IGCT, is connected institute
State IGCT.
2. switch module according to claim 1, it is characterised in that the resistance of the first resistor is 0.5~1000 Europe.
3. switch module according to claim 1, it is characterised in that the resistance of the second resistance is 10~5,000,000
Europe.
4. switch module according to claim 1, it is characterised in that the switch module also includes diode, described two
Pole pipe is in parallel with the first resistor, and the negative electrode of the diode connects the electric capacity.
5. switch module according to claim 1, it is characterised in that the drive circuit is processor.
6. switch module according to claim 1, it is characterised in that at least one described second switch located at it is described at least
Between one first switch and the IGCT.
7. the switch module according to claim any one of 1-6, it is characterised in that the switch module includes multiple described
First switch and multiple second switches.
8. the switch module according to claim any one of 1-6, it is characterised in that the switch module is included described in one
First switch and a second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260273.4A CN104966633B (en) | 2015-05-20 | 2015-05-20 | Switch module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260273.4A CN104966633B (en) | 2015-05-20 | 2015-05-20 | Switch module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104966633A CN104966633A (en) | 2015-10-07 |
| CN104966633B true CN104966633B (en) | 2017-09-19 |
Family
ID=54220658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510260273.4A Active CN104966633B (en) | 2015-05-20 | 2015-05-20 | Switch module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104966633B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1126570A (en) * | 1965-10-30 | 1968-09-05 | Matsushita Electric Works Ltd | Arc-suppressing circuit for switching devices in direct current circuit |
| US3529210A (en) * | 1967-02-28 | 1970-09-15 | Mitsubishi Electric Corp | Current limiting circuit |
| CH514225A (en) * | 1970-04-10 | 1971-10-15 | Bbc Brown Boveri & Cie | Switching device for switching off direct current high-voltage lines |
| SE462357B (en) * | 1988-10-31 | 1990-06-11 | Asea Brown Boveri | STROEMBEGRAENSARE |
| GB2275367B (en) * | 1993-02-22 | 1997-06-25 | Yang Tai Her | D.C. Cut-off switch extinguishing arc circuit |
| CN2852361Y (en) * | 2005-12-10 | 2006-12-27 | 王炎 | Restorable high capacity high-speed switch apparatus |
| CN101430973A (en) * | 2007-11-05 | 2009-05-13 | 河南省新乡市矿山起重机有限公司 | Direct current switch arc suppressor |
| CN101820274A (en) * | 2010-04-20 | 2010-09-01 | 武汉星火投资咨询中心（普通合伙） | Sparkless safety switch, socket and safety power on-off method |
| CN102723700A (en) * | 2012-04-24 | 2012-10-10 | 上海诺雅克电气有限公司 | Direct-current contact switch breaking protective circuit and contactor |
| DK2801994T3 (en) * | 2013-05-07 | 2019-04-15 | Abb Spa | DC switching device, electronic device and method for switching an associated DC circuit |
-
2015
- 2015-05-20 CN CN201510260273.4A patent/CN104966633B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104966633A (en) | 2015-10-07 |
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Effective date of registration: 20200721 Address after: 441004 unit 6, unit 1, building 4, Jinxiu Tianchi yulanyuan, high tech Zone, Xiangyang City, Hubei Province Patentee after: Hubei Hongfei Electronic Technology Co., Ltd Address before: 441004, No. 1, Dong Jin Road, Xiangfan Automotive Industry Development Zone, Hubei, China (4 floor of old fire brigade) Co-patentee before: HUBEI YIJIA TECHNOLOGY Co.,Ltd. Patentee before: Wang Yunguo |
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| TR01 | Transfer of patent right |