CN203984383U - DC solid-state relay - Google Patents
DC solid-state relay Download PDFInfo
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- CN203984383U CN203984383U CN201420419938.2U CN201420419938U CN203984383U CN 203984383 U CN203984383 U CN 203984383U CN 201420419938 U CN201420419938 U CN 201420419938U CN 203984383 U CN203984383 U CN 203984383U
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- bipolar transistor
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Abstract
The utility model discloses a kind of DC solid-state relay, comprise isolation module and voltage doubling rectifier module and power output module that input control module, isolation components and parts are magnetic ring transformer; The input of described input control module connects DC control supply; The primary coil of described magnetic ring transformer connects the output of described input control module; The input of described voltage doubling rectifier module connects the secondary coil of described magnetic ring transformer; Described power output module comprises insulated gate bipolar transistor Q2, the grid of described insulated gate bipolar transistor Q2 connects the output of described voltage doubling rectifier module, and the collector electrode of insulated gate bipolar transistor Q2, emitter connect respectively the positive and negative electrode of load power source.The DC solid-state relay application that the utility model provides is more flexible, and stability is better, and power output is also larger, and convenient and practical.
Description
Technical field
The utility model relates to solid-state relay, is specifically related to DC solid-state relay.
Background technology
Solid-state relay is except having the function the same with electromagnetic relay, also there is logical circuit compatibility, the resistance to resistance to mechanical shock of shaking, installation site is unrestricted, has good moistureproof and mildewproof Corrosion Protection, explosion-proof and prevent that the performance aspect ozone pollution is also splendid, input power is little, highly sensitive, and power ratio control is little, Electro Magnetic Compatibility is good, the low and operating frequency high of noise.Special-purpose solid-state relay can have short-circuit protection, and overload protection and overheat protective function just can realize with combinational logic cure package the intelligent object that user needs, and are directly used in control system.
At present solid-state relay has been widely used in computer external interface equipment, constant temperature system, temperature adjustment, electric furnace and has added temperature control, Electric Machine Control, numerical controlled machinery, remote control system, industrial automation arrangement; Signal lamp, light modulation, scintillator, illumination stage light control system; Instrument and meter, medicine equipment, photocopier, automatic washing machine; Automatic fire control, security system and as diverter switch of the electric capacitor of grid power factor compensation etc., has a large amount of uses in, anticorrosion occasion explosion-proof, moistureproof at need such as chemical industry, collieries in addition.
On market, solid-state relay is of a great variety, but great majority are ac solid relays, the DC solid-state relay that is applied to the occasions such as various DC load equipment is fewer, on market, less DC solid-state relay all adopts transistor as switching device, due to condition restriction, this DC solid-state relay very flexible need to be changed many components and parts and could be realized when power output is different; And pressure drop is high after conducting, caloric value is large, cause its stability also very poor.
Utility model content
Technical problem to be solved in the utility model is DC solid-state relay very flexible, the bad problem of stability.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is to provide a kind of DC solid-state relay, comprises isolation module and voltage doubling rectifier module and power output module that input control module, isolation components and parts are magnetic ring transformer;
The input of described input control module connects DC control supply;
The primary coil of described magnetic ring transformer connects the output of described input control module;
The input of described voltage doubling rectifier module connects the secondary coil of described magnetic ring transformer;
Described power output module comprises insulated gate bipolar transistor Q2, the grid of described insulated gate bipolar transistor Q2 connects the output of described voltage doubling rectifier module, and the collector electrode of insulated gate bipolar transistor Q2, emitter connect respectively the positive and negative electrode of load power source.
In above-mentioned DC solid-state relay, described input control module comprises the first resistance R 1, the first capacitor C 1, the 3rd resistance R 5 and diode D1 and NPN type triode Q1; Wherein, after the first resistance R 1 and the first capacitor C 1 parallel connection, one end connects the base stage of NPN type triode Q1; The other end connects the input of primary coil and the positive pole of DC control supply of magnetic ring transformer T1; The collector electrode of NPN type triode Q1 connects the output of the primary coil of magnetic ring transformer T1; The emitter of NPN type triode Q1 is connected the negative pole of DC control supply successively with diode D1 through the 3rd resistance R 5, the negative pole of diode D1 is connected with the negative pole of DC control supply; A capacitor C 2 in parallel and C3 respectively between base stage and emitter and between collector electrode and emitter.
In above-mentioned DC solid-state relay, cut-in operation indicating circuit between the positive and negative electrode of described DC control supply, described working indicating comprises a resistance R 2 and a light-emitting diode D2; Connect with the positive pole of described light-emitting diode D2 in one end of described resistance R 2, the other end connects the positive pole of DC control supply, and the negative pole of described light-emitting diode D2 is connected with the negative pole of DC control supply.
In above-mentioned DC solid-state relay, described power output module also comprises voltage stabilizing didoe D7, bleeder resistance R7 and current-limiting resistance R6, described voltage stabilizing didoe D7 and described bleeder resistance R7 are in parallel, and one end of described voltage stabilizing didoe D7 negative pole is connected with described voltage doubling rectifier module output, the emitter of described insulated gate bipolar transistor Q2 and the negative pole of load power source; The negative pole of described voltage stabilizing didoe D7 is connected with the grid of described insulated gate bipolar transistor Q2; Described current-limiting resistance R6 is connected between the grid and described voltage doubling rectifier module input of described insulated gate bipolar transistor Q2; The collector electrode of described insulated gate bipolar transistor Q2 connects the positive pole of load power source.
In above-mentioned DC solid-state relay, described insulated gate bipolar transistor Q2 also available inside with the model of damper diode or access a fly-wheel diode between the positive and negative electrode of load power source, the positive pole of described fly-wheel diode is connected with the negative pole of load power source, and the negative pole of described fly-wheel diode is connected with the positive pole of load power source.
The utility model adopts magnetic ring transformer to obtain little alternating voltage as the isolating device induction of isolation module, by voltage doubling rectifier module, little alternating voltage being improved to rectification is again large direct voltage, after voltage stabilizing didoe, obtaining galvanic current presses, to guarantee to trigger the conducting of IGBT pipe, when demanded power output changes, because this design has guaranteed to trigger the burning voltage that IGBT manages conducting, so only need to change the IGBT pipe of different capacity, just can realize the output of different capacity, so the DC solid-state relay that the utility model provides application is more flexible, stability is better, power output is also larger, and convenient and practical.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model;
The DC solid-state relay electrical schematic diagram that Fig. 2 provides for the utility model;
Fig. 3 is DC solid-state relay load wiring schematic diagram of the present utility model;
The DC solid-state relay load end that Fig. 4 provides for the utility model adds protection diode electrically schematic diagram.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the utility model is described in detail.
As shown in Figure 1, the DC solid-state relay that the utility model provides comprises input control module 01, the isolation components and parts isolation module 02 that is magnetic ring transformer and voltage doubling rectifier module 03 and the power output module 04 of four times;
The input of input control module 01 connects DC control supply;
The primary coil of the magnetic ring transformer of isolation module 02 connects the output of input control module 01;
The input of voltage doubling rectifier module 03 connects the secondary coil of described magnetic ring transformer;
Power output module 04 comprises insulated gate bipolar crystal (IGBT) pipe Q2, the grid of described insulated gate bipolar transistor Q2 connects the output of described voltage doubling rectifier module, and the collector electrode of insulated gate bipolar transistor Q2, emitter connect respectively the positive and negative electrode of load power source.
It shown in Fig. 2, is the concrete electrical schematic diagram of DC solid-state relay that the utility model provides.
In Fig. 2, input control module comprises the first resistance R 1, the first capacitor C 1 and the 3rd resistance R 5 and NPN type triode Q1.Wherein, after the first resistance R 1 and the first capacitor C 1 parallel connection, one end connects the base stage of NPN type triode Q1, and to NPN type triode, Q1 carries out current limliting step-down; The other end connects the input of primary coil and the positive pole of DC control supply 3 of magnetic ring transformer T1.The collector electrode of NPN type triode Q1 connects the output of the primary coil of magnetic ring transformer T1; The emitter of NPN type triode Q1 connects the negative pole 4 of DC control supply through the 3rd resistance R 5, can change the voltage range of input control power supply by changing the resistance size of the 3rd resistance R 5; A capacitor C 2 in parallel and C3 respectively between base stage and emitter and between collector electrode and emitter.
For the NPN type triode Q1 that guarantees input control module breakdown burning not after input reverse polarity connection; can between NPN type triode Q1 emitter and the negative pole 4 of DC control supply, access a diode D1; play reverse polarity protection's effect; the negative pole of diode D1 is connected on the negative pole 4 of direct-current control voltage, and positive pole is connected to transistor emitter after connecting with the 3rd resistance R 5.
As shown in Figure 2, power output module also comprises a voltage stabilizing didoe D7, a bleeder resistance R7 and a current-limiting resistance R6, voltage stabilizing didoe D7 and bleeder resistance R7 are in parallel, and one end of voltage stabilizing didoe D7 negative pole is connected with the voltage doubling rectifier module output of four times, the IGBT pipe emitter of Q2 and the negative pole of load power source 2; One end of voltage stabilizing didoe D7 negative pole is connected with the grid of IGBT pipe Q2; Between the grid of IGBT pipe Q2 and voltage doubling rectifier module input, accessing current-limiting resistance R6, is the grid current limliting that IGBT manages Q2; The collector electrode of IGBT pipe Q2 connects the positive pole 1 of load power source.
As positive and negative electrode 3, the 4 input prescribed limit direct voltage (3-32V from DC control supply, change resistance R 5 can change input control voltage scope) time, NPN type triode Q1 conducting, and be magnifying state, now magnetic ring transformer T1 primary coil has electric current to pass through, produce induced electromotive force, secondary coil senses little ac voltage signal; The voltage doubling rectifing circuit of four times that process is comprised of capacitor C 6, C7, C8, C9 and diode D3, D4, D5, D6 is (because voltage doubling rectifing circuit is for knowing circuit common, therefore be not specifically described) obtain d. c. voltage signal, through voltage stabilizing didoe D7 voltage stabilizing, obtaining galvanic current presses, the grid of input IGBT pipe Q2 triggers IGBT pipe Q2 conducting, connect the load circuit at load power source positive pole 1, negative pole 2 two ends, after input control voltage is cancelled, IGBT tube grid no-voltage ends shutoff and disconnecting consumers loop.
In the utility model, between positive pole 3, negative pole 4 and the input control module of DC control supply, also accessed working indicating, connect with the positive pole of light-emitting diode D2 in the one end that is resistance R 2, the other end connects the positive pole 3 of DC control supply, and the negative pole of light-emitting diode D2 is connected with the negative pole of DC control supply 4; When the positive pole 3 from DC control supply, negative pole 4 input prescribed limit direct voltage, light-emitting diode D2 is always luminous, indicates in running order; If light-emitting diode D2 does not work, illustrate that the utility model quits work or breaks down.
It shown in Fig. 3, is DC solid-state relay load wiring schematic diagram of the present utility model; for load is carried out to reverse polarity protection; IGBT can be managed to Q2 makes inside into the type of damper diode or is accessing a fly-wheel diode at load power source anodal 1 and 2, negative pole; the positive pole of fly-wheel diode is connected with the negative pole of load power source 2, and the negative pole of fly-wheel diode is connected (as shown in Figure 4) with the positive pole of load power source 1.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection range of the present utility model.
Claims (5)
1. DC solid-state relay, is characterized in that, comprises isolation module and voltage doubling rectifier module and power output module that input control module, isolation components and parts are magnetic ring transformer;
The input of described input control module connects DC control supply;
The primary coil of described magnetic ring transformer connects the output of described input control module;
The input of described voltage doubling rectifier module connects the secondary coil of described magnetic ring transformer;
Described power output module comprises insulated gate bipolar transistor Q2, the grid of described insulated gate bipolar transistor Q2 connects the output of described voltage doubling rectifier module, and the collector electrode of insulated gate bipolar transistor Q2, emitter connect respectively the positive and negative electrode of load power source.
2. DC solid-state relay as claimed in claim 1, is characterized in that, described input control module comprises the first resistance R 1, the first capacitor C 1, the 3rd resistance R 5 and diode D1 and NPN type triode Q1; Wherein, after the first resistance R 1 and the first capacitor C 1 parallel connection, one end connects the base stage of NPN type triode Q1; The other end connects the input of primary coil and the positive pole of DC control supply of magnetic ring transformer T1; The collector electrode of NPN type triode Q1 connects the output of the primary coil of magnetic ring transformer T1; The emitter of NPN type triode Q1 is connected the negative pole of DC control supply successively with diode D1 through the 3rd resistance R 5, the negative pole of diode D1 is connected with the negative pole of DC control supply; A capacitor C 2 in parallel and C3 respectively between base stage and emitter and between collector electrode and emitter.
3. DC solid-state relay as claimed in claim 2, is characterized in that, cut-in operation indicating circuit between the positive and negative electrode of described DC control supply, and described working indicating comprises a resistance R 2 and a light-emitting diode D2; Connect with the positive pole of described light-emitting diode D2 in one end of described resistance R 2, the other end connects the positive pole of DC control supply, and the negative pole of described light-emitting diode D2 is connected with the negative pole of DC control supply.
4. DC solid-state relay as claimed in claim 1, it is characterized in that, described power output module also comprises voltage stabilizing didoe D7, bleeder resistance R7 and current-limiting resistance R6, described voltage stabilizing didoe D7 and described bleeder resistance R7 are in parallel, and one end of described voltage stabilizing didoe D7 negative pole is connected with described voltage doubling rectifier module output, the emitter of described insulated gate bipolar transistor Q2 and the negative pole of load power source; The negative pole of described voltage stabilizing didoe D7 is connected with the grid of described insulated gate bipolar transistor Q2; Described current-limiting resistance R6 is connected between the grid and described voltage doubling rectifier module input of described insulated gate bipolar transistor Q2; The collector electrode of described insulated gate bipolar transistor Q2 connects the positive pole of load power source.
5. DC solid-state relay as claimed in claim 1, it is characterized in that, described insulated gate bipolar transistor Q2 also available inside with the model of damper diode or access a fly-wheel diode between the positive and negative electrode of load power source, the positive pole of described fly-wheel diode is connected with the negative pole of load power source, and the negative pole of described fly-wheel diode is connected with the positive pole of load power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419938.2U CN203984383U (en) | 2014-07-29 | 2014-07-29 | DC solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419938.2U CN203984383U (en) | 2014-07-29 | 2014-07-29 | DC solid-state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984383U true CN203984383U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420419938.2U Expired - Lifetime CN203984383U (en) | 2014-07-29 | 2014-07-29 | DC solid-state relay |
Country Status (1)
| Country | Link |
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| CN (1) | CN203984383U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049018A (en) * | 2015-08-31 | 2015-11-11 | 常州工学院 | Novel solid-state relay |
| CN105763179B (en) * | 2016-04-14 | 2018-08-31 | 北京卫星制造厂 | A kind of telecommand interface circuit of satellite compatible receiver twin voltage level |
| CN110706977A (en) * | 2019-11-08 | 2020-01-17 | 桂林航天电子有限公司 | A PWM control relay |
| CN110798191A (en) * | 2019-10-30 | 2020-02-14 | 宋晓东 | Normally closed direct current solid state relay |
-
2014
- 2014-07-29 CN CN201420419938.2U patent/CN203984383U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049018A (en) * | 2015-08-31 | 2015-11-11 | 常州工学院 | Novel solid-state relay |
| CN105049018B (en) * | 2015-08-31 | 2018-02-09 | 常州工学院 | A kind of New Solid relay |
| CN105763179B (en) * | 2016-04-14 | 2018-08-31 | 北京卫星制造厂 | A kind of telecommand interface circuit of satellite compatible receiver twin voltage level |
| CN110798191A (en) * | 2019-10-30 | 2020-02-14 | 宋晓东 | Normally closed direct current solid state relay |
| CN110706977A (en) * | 2019-11-08 | 2020-01-17 | 桂林航天电子有限公司 | A PWM control relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |