CN201252522Y - Electronic switch with arc extinction function - Google Patents
Electronic switch with arc extinction function Download PDFInfo
- Publication number
- CN201252522Y CN201252522Y CNU2008201282664U CN200820128266U CN201252522Y CN 201252522 Y CN201252522 Y CN 201252522Y CN U2008201282664 U CNU2008201282664 U CN U2008201282664U CN 200820128266 U CN200820128266 U CN 200820128266U CN 201252522 Y CN201252522 Y CN 201252522Y
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- China
- Prior art keywords
- relay
- switch
- main switch
- active
- electronic 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.)
- Expired - Fee Related
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- 230000008033 biological extinction Effects 0.000 title abstract 2
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses an electronic switch with arc extinction function, including a main switch K1, a control circuit, still include one with main switch K1 input and output port parallel connection's active switch K2 and inductance L, the control circuit is connected with main switch and active switch respectively for control the working sequence of main switch and active switch; on the basis of the relay, a few circuits are added, and the working principle of the relay completely has the advantages of silicon controlled rectifier; at the moment when the relay is opened and closed, the impact current does not flow through the relay completely, so that the contact of the relay can be effectively protected, and the service life of the relay is greatly prolonged.
Description
Technical field
The utility model relates to appliance switch, is specifically related to a kind of electronic switch that adopts devices such as relay, contactor, controllable silicon, MOSFET, IGBT to implement make-break operation.
Technical background
In modern illuminator, there is considerable electronic switch to use the connecting and disconnecting operation that relay or controllable silicon, MOSFET, IGBT realize circuit, to reach the purpose of automation control.
Do in the electronic switch of switching device at the application relay, because lighting wiring and loadtype difference usually make circuit present capacitive or perception; Even if incandescent lamp also because its cold conditions and hot resistance differ greatly, makes relay at the moment formation huge impact electric current of connecting and turn-offing, cause the contact clinkering and burn out the contact, the life-span of relay is shortened dramatically.General solution is: adopt the rated value (when load is incandescent lamp) of traditional arc extinguishing method or reduction relay contact capacity to use and indicate in product and can not be with perception and capacitive load, the shortcoming of making like this is to have increased the circuit installation (need determine crowbar circuit according to loadtype with the complexity that is connected, versatility is poor, and need the professional that circuit is analyzed, to determine the crowbar circuit type), and can not give full play to the performance of relay.
Do in the electronic switch of switching device at using silicon controlled, MOSFET, IGBT, the product strong shock resistance, the life-span is long.But such switch is because there is a constant pressure drop in itself, and therefore, own loss also increases when switching current is big, and heating is serious, even needs big radiator auxiliary heat dissipation, and this not only causes energy dissipation, and manufacture difficulty also increases simultaneously.
The utility model content
The purpose of this utility model is, a kind of electronic switch with arc eliminator is provided, and can overcome many shortcomings such as existing electronic switch impact resistance is poor, the life-span short, heating is serious.
The technical scheme that the utility model provides is as follows: construct a kind of electronic switch with arc eliminator, comprise a main switch, one control circuit, also comprise an active switch and an inductance that is connected in parallel with described main switch input and output port, described control circuit is connected with active switch with described main switch respectively, is used to control the work schedule of described main switch and active switch.
In above-mentioned electronic switch with arc eliminator, described main switch is one of following device: relay, contactor; Described active switch is one of following device: controllable silicon, MOSFET, IGBT, and coupled inductance L.
Advantage of the present utility model is, increases the small part circuit on the basis of relay, and its operation principle has just possessed the advantage of above several devices (controllable silicon, MOSFET, IGBT) fully.In the moment that relay opens and closes, the impulse current relay of not flowing through fully, thereby the contact of protection relay effectively prolong life-span of relay greatly.
Contact resistance was little when the utility model can guarantee that relay is normally connected, the scope of application is wide, can guarantee that again relay has very strong impact resistance connecting with shutdown moment, thus guarantee relay carrying load ability, prolong the useful life of relay, largely reduced the caloric value of system.
Can extend a kind of new high power capacity, long-life relay by this kind extinguishing arc technology.
In the utility model, what electronic switch was implemented make-break operation both can be relay, contactor, also can be the active electronic switch of controllable silicon, MOSFET, IGBT or other types.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is circuit control timing figure of the present utility model;
Fig. 3 is a practical circuit diagram of using present technique.
" K1 " is relay contact switch, and " K2 " is additional active switch (controllable silicon, MOSFET, IGBT etc.)
Switch " K1, K2 " high level is closed conducting, and low level is ended for turn-offing.
Embodiment
With reference to Fig. 1, Fig. 2; A kind of electronic switch with arc eliminator is provided, comprise a main switch K1, one control circuit, also comprise an active switch K2 and an inductance (L) that is connected in parallel with the input and output port of main switch K1, control circuit is connected with active switch with described main switch respectively, is used to control the work schedule of described main switch and active switch.
In above-mentioned electronic switch with arc eliminator, main switch K1 can be one of following device: relay, contactor; Described active switch K2 can be one of following device: controllable silicon, MOSFET, IGBT, and coupled inductance L.
After control circuit receives the order of opening switch, at first open active switch K2, this moment impulse current fully through the K2 load of flowing through, wait for T1 time impulse current fully through after, control relay K1 adhesive again.When relay K 1 adhesive, the contact can be shaken, and at this moment, most of electric current is still through the K2 load of flowing through, because the pressure drop ratio on the K2 is lower, therefore impacts less to relay K 1.After stable through the contact chatter of T2 time relay K1, active switch K2 disconnects again, this moment the loaded work piece electric current relay K 1 of just flowing through fully.
After the order of receiving stopcock, active switch K2 at first opens, T4 is after the time for process, relay K 1 is turn-offed, this moment is active switch K2 because load current is flowed through fully, therefore the contact of relay K 1 just is not subjected to the impact of cut-off current fully, and after stable through the contact chatter of T5 time relay K1, active switch K2 disconnects again.Impulse current also put on active switch K2 fully when therefore, circuit turn-offed.
Acting as of inductance L prevents that the K2 impulse current is excessive and impaired.
By above principle as can be seen; in the moment that relay opens and closes, impulse current puts on active switch K2 fully, thereby has protected the contact of relay K 1 effectively; prolonged the life-span of relay greatly, guaranteed that also the capacity of relay contact can not reduce because of impulse current is excessive.And because active switch K2 just works in the moment that circuit turns on and off, oneself power consumption is minimum, therefore also need not to consider the heat dissipation problem of active device, has not only saved the energy, has also reduced manufacture difficulty and cost.
Claims (2)
1, a kind of electronic switch with arc eliminator, comprise a main switch (K1), one control circuit, it is characterized in that, also comprise an active switch (K2) and an inductance (L) that is connected in parallel with described main switch (K1) input and output port, described control circuit is connected with active switch with described main switch respectively, is used to control the work schedule of described main switch and active switch.
2, the electronic switch with arc eliminator according to claim 1 is characterized in that, described main switch (K1) is one of following device: relay, contactor; Described active switch (K2) is one of following device: controllable silicon, MOSFET, IGBT, and coupled inductance L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201282664U CN201252522Y (en) | 2008-07-14 | 2008-07-14 | Electronic switch with arc extinction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201282664U CN201252522Y (en) | 2008-07-14 | 2008-07-14 | Electronic switch with arc extinction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201252522Y true CN201252522Y (en) | 2009-06-03 |
Family
ID=40748184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201282664U Expired - Fee Related CN201252522Y (en) | 2008-07-14 | 2008-07-14 | Electronic switch with arc extinction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201252522Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348237A (en) * | 2013-08-02 | 2015-02-11 | 台达电子工业股份有限公司 | Electric vehicle supply equipment and operation method thereof |
| CN104810787A (en) * | 2014-01-26 | 2015-07-29 | 艾默生网络能源***北美公司 | Novel mechanical contact arcing protection method |
| CN104953557A (en) * | 2015-07-01 | 2015-09-30 | 珠海银隆电器有限公司 | Protection device for power battery contactor of electric automobile and control method of protection device |
| CN108599748A (en) * | 2018-03-23 | 2018-09-28 | 加码技术有限公司 | A kind of switch element protection circuit, guard method and protective device |
| CN111090057A (en) * | 2018-10-23 | 2020-05-01 | 现代自动车株式会社 | System for determining a state of a power relay assembly |
-
2008
- 2008-07-14 CN CNU2008201282664U patent/CN201252522Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348237A (en) * | 2013-08-02 | 2015-02-11 | 台达电子工业股份有限公司 | Electric vehicle supply equipment and operation method thereof |
| CN104810787A (en) * | 2014-01-26 | 2015-07-29 | 艾默生网络能源***北美公司 | Novel mechanical contact arcing protection method |
| CN104810787B (en) * | 2014-01-26 | 2017-12-29 | 艾默生网络能源***北美公司 | A kind of mechanical contact arcing guard method |
| CN104953557A (en) * | 2015-07-01 | 2015-09-30 | 珠海银隆电器有限公司 | Protection device for power battery contactor of electric automobile and control method of protection device |
| CN108599748A (en) * | 2018-03-23 | 2018-09-28 | 加码技术有限公司 | A kind of switch element protection circuit, guard method and protective device |
| CN108599748B (en) * | 2018-03-23 | 2022-04-22 | 加码技术有限公司 | Switch element protection circuit, protection method and protection device |
| CN111090057A (en) * | 2018-10-23 | 2020-05-01 | 现代自动车株式会社 | System for determining a state of a power relay assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20100714 |