CN203596806U - Electronic switch protection module in hybrid relay - Google Patents
Electronic switch protection module in hybrid relay Download PDFInfo
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- CN203596806U CN203596806U CN201320792751.2U CN201320792751U CN203596806U CN 203596806 U CN203596806 U CN 203596806U CN 201320792751 U CN201320792751 U CN 201320792751U CN 203596806 U CN203596806 U CN 203596806U
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Abstract
The utility model discloses an electronic switch protection module in a hybrid relay. A coil of a mechanical switch of the hybrid relay, the input end of a power up time-delay power-off circuit, and the input end of a current detection and judging circuit are parallelly connected to the output end of an input threshold circuit; the input threshold circuit is used for achieving simultaneous power up; the output end of the power up time-delay power-off circuit and the output end of the current detection and judging circuit are connected to the input of the electronic switch of the hybrid relay and together provide power for the electronic switch; one output end of the electronic switch of the hybrid relay and one contact of the mechanical switch of the hybrid relay are directly connected and then output; and another output end of the electronic switch of the hybrid relay and another contact of the mechanical switch of the hybrid relay pass through the current detection and judging circuit and are then output. The protection module is capable of protecting the electronic switch from burn-out, and performs a protection function for the electronic switch according to different working conditions.
Description
Technical field
The utility model relates to hybrid relay technical field, is specifically related to electronic switch protection module in a kind of hybrid relay.
Background technology
The mode that hybrid relay utilizes electronic switch to subdue electric arc is: after powering on, and the first conducting of electronic switch, closed after mechanical switch; After power down, mechanical switch first discharges, and after electronic switch, turn-offs.Current hybrid relay mainly adopts the mode of two kinds of electronic switch work: mode 1 is to allow electronic switch always in conducting state; Mode 2 be allow electronic switch power on and power down process in each realization once connect and turn-off, closed mechanical switch and dispose procedure are encompassed in the on-state of electronic switch.These two kinds of modes have the following disadvantages:
Mode 1: if after hybrid relay powers on, mechanical switch is because moving the stuck closure of failing, electronic switch bears high current load always, must cause electronic switch to burn;
Mode 2: the control of electronic switch turn-on time is required very precise and stable, if control bad or mechanical switch action and change release time, all very easily cause mechanical switch damage.
For preventing that electronic switch from burning, design one for the module under different operating state, electronic switch being played a protective role.
Utility model content
Technical problem to be solved in the utility model is to provide electronic switch protection module in a kind of hybrid relay, and it can prevent that electronic switch from burning, and can play a protective role to electronic switch for different operating state.
For addressing the above problem, the utility model is achieved through the following technical solutions:
Electronic switch protection module in a kind of hybrid relay, is mainly made up of input threshold circuit, delayed power-down circuit and current detecting and judgement output circuit; The input of the coil of the mechanical switch of hybrid relay, the input of delayed power-down circuit and current detecting and judgement output circuit is connected in parallel on the output of input threshold circuit, is realized and being powered on simultaneously by input threshold circuit; The output of delayed power-down circuit is connected the input of the electronic switch of hybrid relay with the output of judgement output circuit with current detecting, be electronic switch power supply jointly; Output after one output of the electronic switch of hybrid relay and a contact of the mechanical switch of hybrid relay are directly connected, the output that is connected after judging output circuit through current detecting of another output of the electronic switch of hybrid relay and another contact of the mechanical switch of hybrid relay.Current detecting with judge that output circuit detects the output current of electronic switch or mechanical switch, and export corresponding magnitude of voltage according to the size of electric current, by this magnitude of voltage with judge that the voltage reference of output circuit compares, thereby judge the state of output current, again according to judged result output voltage, the work of driving electronic switch, or do not work.
In such scheme, described delayed power-down circuit comprises resistance R 1～R4, diode V1 and V2, voltage-stabiliser tube V3, triode V4, and capacitor C 1; The positive pole of input threshold circuit output end connects diode V1 positive pole, and one end of the negative pole of diode V1, one end of resistance R 1, resistance R 2, the negative pole of diode V2 are connected with the emitter of triode V4; After the other end of resistance R 1 is connected with the negative pole of capacitor C 1, be connected on the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The positive pole of the other end of resistance R 2, one end of resistance R 3, capacitor C 1 is connected with the positive pole of diode V2; The positive pole of another termination voltage-stabiliser tube V3 of resistance R 3, the negative pole of voltage-stabiliser tube V3 connects the base stage of triode V4, and the collector electrode of triode V4 connects the positive pole through resistance R 4 connecting electronic switch input terminals.
In such scheme, described current detecting with judge that output circuit is one of following two kinds:
A kind of current detecting with judge that output circuit comprises resistance R 5～R11, diode V5 and V7, voltage-stabiliser tube V6, triode V8, capacitor C 2 and C3, comparator K, and current sensor B; The positive pole of input threshold circuit output end connects diode V5 positive pole, negative pole, the positive source B1 end of current sensor B and the positive source K8 end of comparator K of one end of one end of the negative pole of diode V5 while contact resistance R6 after resistance R 5, one end of resistance R 7, resistance R 8, the positive pole of capacitor C 2, voltage-stabiliser tube V6; The other end of resistance R 6 connects the output B3 of current sensor B and K2, the K5 of comparator K end; The other end of resistance R 7 is connected the K6 end of comparator K with one end of resistance R 9; The other end of resistance R 8 is connected the K3 end of comparator K with one end of resistance R 10; The K1 end of comparator K is connected with the collector electrode of triode V8; The K7 end of comparator K is connected with the positive pole of diode V7, and the negative pole of diode V7 is connected with the base stage of triode V8 after resistance R 11; The positive pole of the common connecting electronic switch input terminal of positive pole of the emitter of triode V8 and capacitor C 3; After power cathode B2 end, the negative pole of capacitor C 3 and the power cathode K4 of the comparator K end of the other end of the negative pole of capacitor C 2, the positive pole of voltage-stabiliser tube V6, resistance R 9, the other end of resistance R 10, current sensor B is connected, connect respectively the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The output head anode of electronic switch is connected the positive pole as hybrid relay output with an output of mechanical switch; The negative pole of output end of electronic switch connects the B4 end of current sensor B, and B5 end and another output of mechanical switch of current sensor B connects to form the negative pole of hybrid relay output.
Another kind of current detecting with judge that output circuit comprises resistance R 5～R9, diode V5, voltage-stabiliser tube V6, capacitor C 2 and C3, comparator K, and current sensor B; The positive pole of input threshold circuit output end connects diode V5 positive pole, the positive pole of one end of the negative pole of diode V5 difference contact resistance R6 after resistance R 5, one end of resistance R 7, capacitor C 2, negative pole, the positive source B1 end of current sensor B and the positive source K5 end of comparator K of voltage-stabiliser tube V6; The other end of resistance R 6 connects the output B3 of current sensor B and the K1 of comparator K end; One end of the other end of resistance R 7 and resistance R 8 is connected to the K3 end of comparator K jointly; After power cathode B2 end, the negative pole of capacitor C 3 and the power cathode K2 of the comparator K end of the negative pole of the other end of resistance R 8 and capacitor C 2, the positive pole of voltage-stabiliser tube V6, current sensor is connected, connect respectively the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The K4 end of comparator K is connected the positive pole of capacitor C 3 with one end of resistance R 9; The positive pole of the other end connecting electronic switch input terminal of resistance R 9; The positive pole of the output of electronic switch is connected the positive pole as hybrid relay output with an output of mechanical switch; Another output of mechanical switch connects the B4 end of current sensor B, and the B5 end of current sensor is connected the negative pole as hybrid relay output with the negative pole of electronic switch output.
In such scheme, the mechanical switch of hybrid relay adopts electromagnetic relay, and the electronic switch of hybrid relay adopts general solid state relay.
Compared with prior art, the utlity model has following advantage:
1, input threshold circuit is that mechanical switch and electronic switch are powered simultaneously, guarantees the first conducting of electronic switch;
2,, when relay turn-offs, after mechanical switch discharges, just stop, to electronic switch power supply, guaranteeing to turn-off after electronic switch;
If 3 mechanical switchs are not closed or do not discharge, the large electric current that electronic switch is all only born alone certain hour just turn-offs, and can not cause damage to electronic switch.
Accompanying drawing explanation
Fig. 1 is a) a kind of former road of hybrid relay circuit block diagram of protection module of detected electrons switch output current;
Fig. 1 is b) a) circuit diagram of middle delayed power-down circuit of Fig. 1;
Fig. 1 is c) a) middle current detecting and the circuit diagram that judges output circuit of Fig. 1;
Fig. 2 is a) a kind of former road of hybrid relay circuit block diagram of the protection module that detects mechanical switch output current;
Fig. 2 is b) a) middle current detecting and the circuit diagram that judges output circuit of Fig. 2.
Embodiment
Embodiment 1:
The hybrid relay circuit block diagram of the protection module of the designed a kind of detected electrons switch output current of the utility model as Fig. 1 a) as shown in.Wherein the mechanical switch of hybrid relay adopts electromagnetic relay, and the electronic switch of hybrid relay adopts general solid state relay.The protection module of detected electrons switch output current, comprises input threshold circuit, delayed power-down circuit, current detecting and judgement output circuit.The input of delayed power-down circuit, current detecting and judgement output circuit, electronic switch adopts for negative method of attachment; Delayed power-down circuit, current detecting are connected with the positive pole of judgement output circuit, by input threshold drives; Current detecting and the output current that judges output circuit detected electrons switch, and outputting drive voltage; The output voltage of delayed power-down circuit, current detecting and judgement output circuit, drives electronic switch work.
The delayed power-down circuit of the utility model design forms time delay by RC charging circuit, and the threshold circuit being made up of triode and voltage-stabiliser tube forms stable Voltage-output, is the power supply of electronic switch part, and delay time is low to rear output, stops power supply.By regulating resistance R2 and capacitor C 1, carry out the adjustment of delay time.
The present embodiment delayed power-down circuit circuit diagram as Fig. 1 b) as shown in, comprise resistance R 1～R4, diode V1 and V2, voltage-stabiliser tube V3, triode V4, capacitor C 1.The positive pole of input threshold circuit output connects diode V1 positive pole, the negative pole of diode V1 is connected the negative pole of diode V2 and the emitter of triode V4 with resistance R 1, the negative pole of the other end of electronics R1 and capacitor C 1 is connected on the negative pole of input threshold circuit and electronic switch input, the other end of resistance R 2 and resistance R 3 connect the positive pole of capacitor C 1 and the positive pole of diode V2, the positive pole of another termination voltage-stabiliser tube V3 of resistance R 3, the negative pole of voltage-stabiliser tube V3 connects the base stage of triode V4, the collector electrode connecting resistance R4 of triode V4, the positive pole of another termination electronic switch input of resistance R 4.
The current detecting of the utility model design with judge that output circuit comprises RC quick-charging circuit, its effect is when after power cut-off, for current detecting with judge that output circuit serves as power supply.Current detecting part is detected the output current of electronic switch by current sensor B and according to the size of electric current, exports corresponding magnitude of voltage.Judge that output is made up of comparator K and benchmark, according to the size of sensor output voltage value, judge the operating state of electronic switch, if in normal operating conditions, export high, be electronic switch continue power supply; If in " zero " electric current or bear alone current state, export lowly, electronic switch is turn-offed.
The present embodiment current detecting with judge output circuit circuit diagram as Fig. 1 c) as shown in, comprise resistance R 5～R11, diode V5 and V7, voltage-stabiliser tube V6, triode V8, capacitor C 2 and C3, comparator K, current sensor B.The positive pole of input threshold circuit output connects diode V5 positive pole, the negative pole of diode V5 is connected with resistance R 5, the other end of resistance R 5 and resistance R 6, resistance R 7, resistance R 8 connects the positive pole of capacitor C 2, the negative pole of voltage-stabiliser tube V6, the power positive end B1 of current sensor B and the power positive end K8 of comparator K, the other end of resistance R 6 connects the output B3 of current sensor B and the K2 of comparator K, K5 port, the other end of resistance R 7 is connected the K6 port of comparator K with resistance R 9, the other end of resistance R 8 is connected the K3 port of comparator K with resistance R 10, the K1 port of comparator K is connected with the collector electrode of triode V8, the K7 port of comparator K is connected with the positive pole of diode V7, the negative pole contact resistance R11 of diode V7, the other end of resistance R 11 is connected with the base stage of triode V8, the anodal connecting electronic switch input of the emitter of triode and capacitor C 3 is anodal, the negative pole of capacitor C 2, the positive pole of voltage-stabiliser tube V6, the other end of resistance R 9, the other end of resistance R 10, the power supply negative terminal B2 of current sensor B, the negative pole of the power supply negative terminal K4 of the negative terminal of capacitor C 3 and comparator K and the output of input threshold circuit, electronic switch input negative pole connects, the output plus terminal of electronic switch is connected with an output of mechanical switch as the anode that mixes output, the output negative terminal of electronic switch connects the B4 end of current sensor B, the B5 end of current sensor B connects to form with another output of mechanical switch the negative pole that mixes output.
The former road of the hybrid relay circuit block diagram of the protection module of the detection mechanical switch output current of the utility model design as Fig. 2 a) as shown in.Wherein the mechanical switch of hybrid relay adopts electromagnetic relay, and the electronic switch of hybrid relay adopts general solid state relay.The protection module that detects mechanical switch output current, comprises input threshold circuit, delayed power-down circuit, current detecting and judgement output circuit.The input of delayed power-down circuit, current detecting and judgement output circuit, electronic switch adopts for negative method of attachment; Delayed power-down circuit, current detecting are connected with the positive pole of judgement output circuit, by input threshold drives; Current detecting detects the output current of mechanical switch with judging output circuit, and outputting drive voltage; The output voltage of delayed power-down circuit, current detecting and judgement output circuit, drives electronic switch work.
The delayed power-down circuit of the utility model design forms time delay by RC charging circuit, and the threshold circuit being made up of triode and voltage-stabiliser tube forms stable Voltage-output, is the power supply of electronic switch part, and delay time is low to rear output, stops power supply.By regulating resistance R2 and capacitor C 1, carry out the adjustment of delay time.
The present embodiment delayed power-down circuit is identical with embodiment 1, circuit diagram as Fig. 1 b) as shown in.
The current detecting of the utility model design with judge that output circuit comprises RC quick-charging circuit, its effect is when after power cut-off, for current detecting with judge that output circuit serves as power supply.Current detecting part is detected the output current of mechanical switch by current sensor B and according to the size of electric current, exports corresponding magnitude of voltage.Judge that output is made up of comparator K and benchmark, according to the size of sensor output voltage value, judge the operating state of electronic switch, if in normal operating conditions, export high, be electronic switch continue power supply; If in " zero " electric current or bear alone current state, export lowly, electronic switch is turn-offed.
The present embodiment current detecting with judge output circuit circuit diagram as Fig. 2 b) as shown in, comprise resistance R 5～R9, diode V5, voltage-stabiliser tube V6, capacitor C 2 and C3, comparator K, current sensor B.The positive pole of input threshold circuit output connects diode V5 positive pole, the negative pole of diode V5 is connected with resistance R 5, the other end of resistance R 5 and resistance R 6, resistance R 7 connects the positive pole of capacitor C 2, the negative pole of voltage-stabiliser tube V6, the power positive end B1 of current sensor B and the power positive end K5 of comparator K, the other end of resistance R 6 connects the output B3 of current sensor B and the K1 port of comparator K, the other end of resistance R 7 is connected the K3 port of comparator K with resistance R 8, the negative terminal of the other end of resistance R 8 and capacitor C 2, the anode of voltage-stabiliser tube V6, the power supply negative terminal B2 of current sensor B, the negative pole of the power supply negative terminal K2 of the negative terminal of capacitor C 3 and comparator K and the output of input threshold circuit, electronic switch input negative pole connects, the K4 port of comparator K is connected the positive pole of capacitor C 3 with resistance R 9, the other end connecting electronic switch input anode of resistance R 9, the output plus terminal of electronic switch is connected with an output of mechanical switch as the anode that mixes output, another output of mechanical switch and the B4 of current sensor B end, the B5 end of current sensor B is connected with the output negative terminal of electronic switch as the negative terminal that mixes output.
Claims (5)
1. electronic switch protection module in hybrid relay, is characterized in that: be mainly made up of input threshold circuit, delayed power-down circuit and current detecting and judgement output circuit; The input of the coil of the mechanical switch of hybrid relay, the input of delayed power-down circuit and current detecting and judgement output circuit is connected in parallel on the output of input threshold circuit; The output of delayed power-down circuit is connected the input of the electronic switch of hybrid relay with the output of judgement output circuit with current detecting; Output after one output of the electronic switch of hybrid relay and a contact of the mechanical switch of hybrid relay are directly connected, the output that is connected after judging output circuit through current detecting of another output of the electronic switch of hybrid relay and another contact of the mechanical switch of hybrid relay.
2. electronic switch protection module in hybrid relay according to claim 1, is characterized in that:
Delayed power-down circuit comprises resistance R 1～R4, diode V1 and V2, voltage-stabiliser tube V3, triode V4, and capacitor C 1; The positive pole of input threshold circuit output end connects diode V1 positive pole, and one end of the negative pole of diode V1, one end of resistance R 1, resistance R 2, the negative pole of diode V2 are connected with the emitter of triode V4; After the other end of resistance R 1 is connected with the negative pole of capacitor C 1, be connected on the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The positive pole of the other end of resistance R 2, one end of resistance R 3, capacitor C 1 is connected with the positive pole of diode V2; The positive pole of another termination voltage-stabiliser tube V3 of resistance R 3, the negative pole of voltage-stabiliser tube V3 connects the base stage of triode V4, and the collector electrode of triode V4 connects the positive pole through resistance R 4 connecting electronic switch input terminals.
3. electronic switch protection module in hybrid relay according to claim 1 and 2, is characterized in that:
Current detecting with judge that output circuit comprises resistance R 5～R11, diode V5 and V7, voltage-stabiliser tube V6, triode V8, capacitor C 2 and C3, comparator K, and current sensor B; The positive pole of input threshold circuit output end connects diode V5 positive pole, negative pole, the positive source B1 end of current sensor B and the positive source K8 end of comparator K of one end of one end of the negative pole of diode V5 while contact resistance R6 after resistance R 5, one end of resistance R 7, resistance R 8, the positive pole of capacitor C 2, voltage-stabiliser tube V6; The other end of resistance R 6 connects the output B3 of current sensor B and K2, the K5 of comparator K end; The other end of resistance R 7 is connected the K6 end of comparator K with one end of resistance R 9; The other end of resistance R 8 is connected the K3 end of comparator K with one end of resistance R 10; The K1 end of comparator K is connected with the collector electrode of triode V8; The K7 end of comparator K is connected with the positive pole of diode V7, and the negative pole of diode V7 is connected with the base stage of triode V8 after resistance R 11; The positive pole of the common connecting electronic switch input terminal of positive pole of the emitter of triode V8 and capacitor C 3; After power cathode B2 end, the negative pole of capacitor C 3 and the power cathode K4 of the comparator K end of the other end of the negative pole of capacitor C 2, the positive pole of voltage-stabiliser tube V6, resistance R 9, the other end of resistance R 10, current sensor B is connected, connect respectively the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The output head anode of electronic switch is connected the positive pole as hybrid relay output with an output of mechanical switch; The negative pole of output end of electronic switch connects the B4 end of current sensor B, and B5 end and another output of mechanical switch of current sensor B connects to form the negative pole of hybrid relay output.
4. electronic switch protection module in hybrid relay according to claim 1 and 2, is characterized in that:
Current detecting with judge that output circuit comprises resistance R 5～R9, diode V5, voltage-stabiliser tube V6, capacitor C 2 and C3, comparator K, and current sensor B; The positive pole of input threshold circuit output end connects diode V5 positive pole, the positive pole of one end of the negative pole of diode V5 difference contact resistance R6 after resistance R 5, one end of resistance R 7, capacitor C 2, negative pole, the positive source B1 end of current sensor B and the positive source K5 end of comparator K of voltage-stabiliser tube V6; The other end of resistance R 6 connects the output B3 of current sensor B and the K1 of comparator K end; One end of the other end of resistance R 7 and resistance R 8 is connected to the K3 end of comparator K jointly; After power cathode B2 end, the negative pole of capacitor C 3 and the power cathode K2 of the comparator K end of the negative pole of the other end of resistance R 8 and capacitor C 2, the positive pole of voltage-stabiliser tube V6, current sensor is connected, connect respectively the negative pole of input threshold circuit output end and the negative pole of electronic switch input; The K4 end of comparator K is connected the positive pole of capacitor C 3 with one end of resistance R 9; The positive pole of the other end connecting electronic switch input terminal of resistance R 9; The positive pole of the output of electronic switch is connected the positive pole as hybrid relay output with an output of mechanical switch; Another output of mechanical switch connects the B4 end of current sensor B, and the B5 end of current sensor is connected the negative pole as hybrid relay output with the negative pole of electronic switch output.
5. electronic switch protection module in hybrid relay according to claim 1, is characterized in that: the mechanical switch of hybrid relay adopts electromagnetic relay, and the electronic switch of hybrid relay adopts general solid state relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320792751.2U CN203596806U (en) | 2013-12-03 | 2013-12-03 | Electronic switch protection module in hybrid relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320792751.2U CN203596806U (en) | 2013-12-03 | 2013-12-03 | Electronic switch protection module in hybrid relay |
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| Publication Number | Publication Date |
|---|---|
| CN203596806U true CN203596806U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320792751.2U Withdrawn - After Issue CN203596806U (en) | 2013-12-03 | 2013-12-03 | Electronic switch protection module in hybrid relay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647533A (en) * | 2013-12-03 | 2014-03-19 | 桂林航天电子有限公司 | Electronic-switch protection module in hybrid relay |
| CN106686821A (en) * | 2017-01-16 | 2017-05-17 | 成都缔趣科技有限公司 | On-off regulation system for bedroom lamps |
-
2013
- 2013-12-03 CN CN201320792751.2U patent/CN203596806U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647533A (en) * | 2013-12-03 | 2014-03-19 | 桂林航天电子有限公司 | Electronic-switch protection module in hybrid relay |
| CN103647533B (en) * | 2013-12-03 | 2016-10-26 | 桂林航天电子有限公司 | Electrical switch protection module in hybrid relay |
| CN106686821A (en) * | 2017-01-16 | 2017-05-17 | 成都缔趣科技有限公司 | On-off regulation system for bedroom lamps |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20161012 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |