CN208738139U - A kind of control relay circuit and relay control device - Google Patents
A kind of control relay circuit and relay control device Download PDFInfo
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- CN208738139U CN208738139U CN201821006439.5U CN201821006439U CN208738139U CN 208738139 U CN208738139 U CN 208738139U CN 201821006439 U CN201821006439 U CN 201821006439U CN 208738139 U CN208738139 U CN 208738139U
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Abstract
The utility model belongs to relay control technology field, mainly provide a kind of control relay circuit and relay control device, the control relay circuit is connect with control signal source and relay respectively, control relay circuit is handled the on and off to drive relay to control signal after receiving the control signal for controlling signal source, when control relay circuit receives the control signal of stopping, electric current in the coil of relay passes through the afterflow of freewheeling path unit, the energy in the coil of relay can consume quickly at this time, the normally opened contact of relay is quickly disconnected, realize the state that relay is quickly in corresponding on or off according to control signal, magnetic force can still be generated by solving a period of time of electric current of the existing control relay circuit often on the coil of relay after receiving cut-off signal The problem of normally opened contact is attracted to generate bounce, easily damage other devices in circuit.
Description
Technical field
The utility model belongs to relay control technology field more particularly to a kind of control relay circuit and relay control
Device processed.
Background technique
Relay has in the circuits such as protecting electrical power system circuit and control circuit as the device of control current switching
It is widely used, is mainly made of coil and contact, existing relay is mostly by receiving digital signal processor hair
Driving signal out controls the conducting of metal-oxide-semiconductor to making the coil of relay be powered, and the magnetic force of hot-wire coil generation makes relay
The contact of device is attracted, and after coil blackout, contact is just disconnected, to realize the opening and closing of relay.
However, since often the electric current on the coil of relay is receiving disconnection to existing control relay circuit
A period of time after signal can still generate magnetic attraction normally opened contact to generate bounce, easily damage its in circuit
His device.
Utility model content
The purpose of this utility model is to provide a kind of control relay circuit and relay control devices, it is intended to solve existing
Some control relay circuits often a period of time of the electric current on the coil of relay after receiving cut-off signal according to
The problem of magnetic attraction normally opened contact can so be generated to generate bounce, easily damage other devices in circuit.
The utility model provides a kind of control relay circuit, connect with control signal source and relay, the relay
Device control circuit includes: first resistor, first capacitor, first diode, the second diode, third diode, the second capacitor,
Three capacitors, the 4th capacitor, second resistance, 3rd resistor, the 4th resistance, first switch unit, the first freewheeling path unit, first
Charging path unit；The first end of the first resistor is connect with the control signal source, the second end of the first resistor with
The first end of the first capacitor connects, the second end of the first capacitor, the cathode of the first diode and described the
The anode of two diodes connects altogether, the cathode of second diode, the first end of second capacitor, the third capacitor
One end, the first end of the 4th resistance, the second end of the first end of the 3rd resistor and the second resistance connect altogether, institute
State the anode of first diode, the second end of second capacitor, the second end of the third capacitor, the 4th resistance
The current output terminal of two ends and first switch unit ground connection, the second end of the 3rd resistor and the third diode
Anode connection, the cathode of the third diode connect with the first control terminal of the first switch unit, and described second is electric
The second end of resistance is connect with the second control terminal of the first switch unit, the current input terminal of the first switch unit, institute
The first end for stating the first end of the first freewheeling path unit and the coil of the relay connects altogether, the first freewheeling path list
The second end of member, the first end of the first charging path unit, the first end of the 4th capacitor and the relay
The second end of coil connects altogether, and the second end of the first charging path unit is connect with power supply.
Optionally, the first charging path unit includes: the 6th resistance；Described in the first end of 6th resistance is used as
The first end of first charging path unit, the second end of the 6th resistance as the first charging path unit second
End.
Optionally, the first freewheeling path unit includes: the 5th resistance；Described in the first end of 5th resistance is used as
The first end of first freewheeling path unit, the second end of the 5th resistance as the first freewheeling path unit second
End.
Optionally, the first switch unit includes: first switch tube and second switch；The electricity of the first switch tube
Current input terminal of the input terminal as the first switch unit is flowed, the control terminal of the first switch tube is opened as described first
Close the first control terminal of unit, the current input terminal company of the current output terminal of the first switch tube and the second switch
It connects, second control terminal of the control terminal of the second switch as the first switch unit, the electricity of the second switch
Flow current output terminal of the output end as the first switch unit.
Optionally, the first switch tube and the second switch are NPN type triode, the first switch tube and
The current input terminal of the second switch is the collector of the NPN type triode, the first switch tube and described second
The control terminal of switching tube is the base stage of the NPN type triode, and the electric current of the first switch tube and the second switch is defeated
Outlet is the emitter of the NPN type triode.
Optionally, the first capacitor is electrolytic capacitor.
Optionally, second capacitor is electrolytic capacitor.
Optionally, the first charging path unit includes: the 4th diode and the 5th capacitor；4th diode
First end of the cathode as the first charging path unit, the anode of the 4th diode and the first of the 5th capacitor
End connects the second end as the first charging path unit, the second end ground connection of the 5th capacitor altogether.
Optionally, the control relay circuit further include: the 6th capacitor；The first end of 6th capacitor and described the
The first end of one capacitor connects, and the second end of the 6th capacitor is connect with the second end of the first capacitor.
The utility model additionally provides a kind of relay control device, connect with control signal source and relay, feature
It is, including control relay circuit as described in any one of the above embodiments.
The utility model provides a kind of control relay circuit, connect with control signal source and relay, wherein relay
Device control circuit includes: first resistor, first capacitor, first diode, the second diode, the second capacitor, third capacitor, the 4th
Capacitor, second resistance, 3rd resistor, the 4th resistance, first switch unit, the first freewheeling path unit, the first charging path list
Member, control relay circuit are handled to drive relay to open control signal after receiving the control signal for controlling signal source
And pass, when control relay circuit receives the control signal of stopping, the electric current in the coil of relay passes through freewheeling path
Unit afterflow, the energy in the coil of relay can consume quickly at this time, allow the fast quick-break of the normally opened contact of relay
It opens, realizes the state that relay is quickly in corresponding on or off according to control signal, solve existing relay control
Often a period of time of the electric current on the coil of relay after receiving cut-off signal can still generate magnetic force to circuit processed
The problem of normally opened contact is attracted to generate bounce, easily damage other devices in circuit.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of control relay circuit cellular construction schematic diagram；
Fig. 2 is a kind of electrical block diagram for control relay circuit that the utility model first embodiment proposes；
Fig. 3 is a kind of electrical block diagram for control relay circuit that the utility model second embodiment proposes.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.Meanwhile term " first ", " second " in the description of the present invention,
It is described etc. being only used for distinguishing, is not understood to indicate or imply relative importance.
Fig. 1 be the utility model proposes a kind of control relay circuit cellular construction schematic diagram, as shown in Fig. 1, this
Control relay circuit in embodiment is connect with control signal source and relay, and control relay circuit includes: first resistor
R1, first capacitor C1, first diode D1, the second diode D2, third diode D3, the second capacitor C2, third capacitor C3,
Four capacitor C4, second resistance R4,3rd resistor R3, the 4th resistance R4, first switch unit 203, the first freewheeling path unit
202, the first charging path unit 201；The first end of first resistor R1 is connect with control signal source 10, and the second of first resistor R1
End is connect with the first end of first capacitor C1, the second end of first capacitor C1, the cathode of first diode D2 and the two or two pole
The anode of pipe D2 connects altogether, the cathode of the second diode D2, the first end of the second capacitor D2, the first end of third capacitor C3, the 4th
The second end of the first end of resistance R4, the first end of 3rd resistor R4 and second resistance R2 connects altogether, the sun of first diode D2
Pole, the second end of the second capacitor C2, the second end of third capacitor C3, the second end and first switch unit of the 4th resistance R4
203 current output terminal ground connection, the second end of 3rd resistor R3 are connect with the anode of third diode D3, third diode D3's
Cathode is connect with the first control terminal of first switch unit 203, and the of the second end of second resistance R2 and first switch unit 203
The connection of two control terminals, the first end and relay of the current input terminal of first switch unit 203, the first freewheeling path unit 202
The first end of the coil of device K1 connects altogether, and the first of the second end of the first freewheeling path unit 202, the first charging path unit 201
The second end of the coil at end, the first end of the 4th capacitor C4 and relay K1 connects altogether, and the second of the first charging path unit 201
End is connect with power supply VDD.
In the present embodiment, when relay K1 is in normal operating conditions, power supply VDD passes through the first charging path
Unit 201 charges to the 4th capacitor C4, and the charging time of the 4th capacitor C4 is related with the resistance value of the first charging path unit 201,
When the resistance value of the first charging path unit 201 is larger, the charging time of the 4th capacitor C4 is shorter, meanwhile, power supply VDD
The coil power supply for being relay K1 by the first charging path unit 201 makes the coil of relay K1 generate magnetic force, by relay
The normally opened contact of device K1 is attracted.When control signal source 10 issue relay disconnect control signal when, the 4th capacitor C4 electric discharge, for after
The coil of electric appliance K1 provides voltage, and the coil current of relay K1 carries out afterflow, therefore, relay by freewheeling path unit 202
Energy in the coil of device K1 can be consumed in freewheeling path unit 202 with cracking speed, the normally opened contact of relay K1
It will quickly disconnect, and realize the state that relay is quickly in corresponding on or off according to control signal, solve existing
Control relay circuit often still can by a period of time of the electric current on the coil of relay after receiving cut-off signal
The problem of magnetic attraction normally opened contact is generated to generate bounce, easily damage other devices in circuit.
As an embodiment of the present invention, Fig. 2 is a kind of relay control that the utility model first embodiment proposes
The electrical block diagram of circuit, as shown in Fig. 2, the first charging path unit 201 includes: the 6th resistance R6；6th resistance R6
First end of the first end as the first charging path unit 201, the second end of the 6th resistance R6 is as the first charging path list
The second end of member 201.
In the present embodiment, the first charging path unit 201 is made of single resistance, and the resistance of the 6th resistance R6 is got over
Greatly, the charging time of the 4th capacitor C4 is shorter.
As an embodiment of the present invention, the first charging path unit 201 can be in series or in parallel by multiple resistance
It is formed.
Further, the equivalent resistance of coil of the resistance of the first charging path unit 201 less than relay K1.
As an embodiment of the present invention, referring to fig. 2, the first freewheeling path unit 202 includes: the 5th resistance R5；The
The second end of first end of the first end of five resistance R5 as the first freewheeling path unit 202, the 5th resistance R5 is continuous as first
The second end of logical circulation road unit 202.
In the present embodiment, when the first freewheeling path unit 202 is larger, the speed of the energy consumption in the coil of relay K1
Degree is also just very fast.However the first freewheeling path unit 202 it is excessive when, also result in energy in the coil of relay K1 compared with
Slowly, five times of the equivalent resistance for the coil that the resistance for generally selecting the first freewheeling path unit 202 is relay K1.
As an embodiment of the present invention, the first freewheeling path unit 202 can be multiple resistor coupled in parallel or series connection
It is formed.
As an embodiment of the present invention, referring to fig. 2, first switch unit 203 includes: first switch tube Q1 and second
Switching tube Q1；Current input terminal of the current input terminal of first switch tube Q1 as first switch unit 203, first switch tube
First control terminal of the control terminal of Q1 as first switch unit 203, the current output terminal and second switch of first switch tube Q1
The current input terminal of pipe Q2 connects, second control terminal of the control terminal of second switch Q2 as first switch unit 203, the
Current output terminal of the current output terminal of two switching tube Q2 as first switch unit 203.
As an embodiment of the present invention, first switch tube Q1 and second switch Q2 are NPN type triode, and first
The current input terminal of switching tube Q1 and second switch Q2 are the collector of NPN type triode, and first switch tube Q1 and second is opened
The control terminal for closing pipe Q2 is the base stage of NPN type triode, and the current output terminal of first switch tube Q1 and second switch Q2 are NPN
The emitter of type triode.
In the present embodiment, first switch tube Q1 and second switch Q2 is that NPN type triode can be opened to avoid first
It closes pipe Q1 and second switch Q2 and generates new parasitic capacitance, cause relay K1 in turn off process because of the original of parasitic capacitance
It is attracted because generating contact, so that the turn-off time is longer and damages other devices.
As an embodiment of the present invention, first capacitor C1 is electrolytic capacitor.
As an embodiment of the present invention, the second capacitor C2 is electrolytic capacitor.
Fig. 3 is a kind of electrical block diagram for control relay circuit that the utility model second embodiment proposes, such as
Shown in Fig. 3, as an embodiment of the present invention, the first charging path unit 201 includes: the 4th diode D4 and the 5th capacitor
C5；First end of the cathode of 4th diode D4 as the first charging path unit 202, the anode of the 4th diode D4 and
The first end of five capacitor C5 connects the second end as the first charging path unit 202, the second end ground connection of the 5th capacitor C5 altogether.
In the present embodiment, the first charging path unit 201 uses the side of the 4th diode D4 and the 5th capacitor C5 parallel connection
Formula can the coil quickly to the 4th capacitor C4 and relay K1 charge.
As an embodiment of the present invention, as shown in figure 3, control relay circuit further include: the 6th capacitor C6；6th
The first end of capacitor C6 is connect with the first end of first capacitor C1, the second end of the 6th capacitor C6 and the second end of first capacitor C1
Connection.
The utility model additionally provides a kind of relay control device, connect with control signal source and relay, feature
It is, including control relay circuit as described in any one of the above embodiments.
The utility model provides a kind of control relay circuit, connect with control signal source and relay, wherein relay
Device control circuit includes: first resistor, first capacitor, first diode, the second diode, the second capacitor, third capacitor, the 4th
Capacitor, second resistance, 3rd resistor, the 4th resistance, first switch unit, the first freewheeling path unit, the first charging path list
Member, control relay circuit are handled to drive relay to open control signal after receiving the control signal for controlling signal source
And pass, when control relay circuit receives the control signal of stopping, the electric current in the coil of relay passes through freewheeling path
Unit afterflow, the energy in the coil of relay can consume quickly at this time, allow the fast quick-break of the normally opened contact of relay
It opens, realizes the state that relay is quickly in corresponding on or off according to control signal, solve existing relay control
Often a period of time of the electric current on the coil of relay after receiving cut-off signal can still generate magnetic force to circuit processed
The problem of normally opened contact is attracted to generate bounce, easily damage other devices in circuit.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of control relay circuit is connected, which is characterized in that the relay control with control signal source and relay
Circuit processed includes: first resistor, first capacitor, first diode, the second diode, third diode, the second capacitor, third electricity
Appearance, the 4th capacitor, second resistance, 3rd resistor, the 4th resistance, first switch unit, the first freewheeling path unit, the first charging
Path unit；
The first end of the first resistor is connect with the control signal source, the second end of the first resistor and first electricity
The first end of appearance connects, the second end of the first capacitor, the cathode of the first diode and second diode
Anode connects altogether, the cathode of second diode, the first end of second capacitor, the first end of the third capacitor, described
The second end of the first end of 4th resistance, the first end of the 3rd resistor and the second resistance connects altogether, and the described 1st
The anode of pole pipe, the second end of second capacitor, the second end of the third capacitor, the second end of the 4th resistance and
The current output terminal of the first switch unit is grounded, and the anode of the second end of the 3rd resistor and the third diode connects
It connecing, the cathode of the third diode is connect with the first control terminal of the first switch unit, and the second of the second resistance
End is connect with the second control terminal of the first switch unit, and the current input terminal of the first switch unit, described first continue
The first end of the coil of the first end of logical circulation road unit and the relay connects altogether, and the second of the first freewheeling path unit
The of the coil at end, the first end of the first charging path unit, the first end of the 4th capacitor and the relay
Two ends connect altogether, and the second end of the first charging path unit is connect with power supply.
2. control relay circuit as described in claim 1, which is characterized in that the first charging path unit includes:
Six resistance；
First end of the first end of 6th resistance as the first charging path unit, the second end of the 6th resistance
Second end as the first charging path unit.
3. control relay circuit as described in claim 1, which is characterized in that the first freewheeling path unit includes:
Five resistance；
First end of the first end of 5th resistance as the first freewheeling path unit, the second end of the 5th resistance
Second end as the first freewheeling path unit.
4. control relay circuit as described in claim 1, which is characterized in that the first switch unit includes: first to open
Close pipe and second switch；
Current input terminal of the current input terminal of the first switch tube as the first switch unit, the first switch tube
First control terminal of the control terminal as the first switch unit, the current output terminal of the first switch tube and described second
The current input terminal of switching tube connects, second control of the control terminal of the second switch as the first switch unit
End, current output terminal of the current output terminal of the second switch as the first switch unit.
5. control relay circuit as claimed in claim 4, which is characterized in that the first switch tube and the second switch
Pipe is NPN type triode, and the current input terminal of the first switch tube and the second switch is the NPN type triode
Collector, the control terminal of the first switch tube and the second switch is the base stage of the NPN type triode, described the
One switching tube and the current output terminal of the second switch are the emitter of the NPN type triode.
6. control relay circuit as described in claim 1, which is characterized in that the first capacitor is electrolytic capacitor.
7. control relay circuit as described in claim 1, which is characterized in that second capacitor is electrolytic capacitor.
8. control relay circuit as described in claim 1, which is characterized in that the first charging path unit includes:
Four diodes and the 5th capacitor；
First end of the cathode of 4th diode as the first charging path unit, the anode of the 4th diode
The second end as the first charging path unit is connect altogether with the first end of the 5th capacitor, the second of the 5th capacitor
End ground connection.
9. control relay circuit as described in claim 1, which is characterized in that the control relay circuit further include: the
Six capacitors；
The first end of 6th capacitor is connect with the first end of the first capacitor, the second end of the 6th capacitor with it is described
The second end of first capacitor connects.
10. a kind of relay control device, including control signal source and relay, which is characterized in that the relay control dress
Set further includes such as the described in any item control relay circuits of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821006439.5U CN208738139U (en) | 2018-06-27 | 2018-06-27 | A kind of control relay circuit and relay control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821006439.5U CN208738139U (en) | 2018-06-27 | 2018-06-27 | A kind of control relay circuit and relay control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208738139U true CN208738139U (en) | 2019-04-12 |
Family
ID=66024502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821006439.5U Expired - Fee Related CN208738139U (en) | 2018-06-27 | 2018-06-27 | A kind of control relay circuit and relay control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208738139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494119A (en) * | 2018-11-30 | 2019-03-19 | 佛山市中格威电子有限公司 | A kind of relay driving protection circuit for household electrical appliances |
| CN114585123A (en) * | 2022-02-22 | 2022-06-03 | 深圳市阳邦兴业智能科技有限公司 | Electromagnetic device control circuit and heating electric appliance |
-
2018
- 2018-06-27 CN CN201821006439.5U patent/CN208738139U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494119A (en) * | 2018-11-30 | 2019-03-19 | 佛山市中格威电子有限公司 | A kind of relay driving protection circuit for household electrical appliances |
| CN114585123A (en) * | 2022-02-22 | 2022-06-03 | 深圳市阳邦兴业智能科技有限公司 | Electromagnetic device control circuit and heating electric appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190412 Termination date: 20210627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |