CN208368431U - A kind of relay accelerates three level driving circuits of folding - Google Patents
A kind of relay accelerates three level driving circuits of folding Download PDFInfo
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- CN208368431U CN208368431U CN201820527529.2U CN201820527529U CN208368431U CN 208368431 U CN208368431 U CN 208368431U CN 201820527529 U CN201820527529 U CN 201820527529U CN 208368431 U CN208368431 U CN 208368431U
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Abstract
The utility model provides a kind of three level driving circuits of relay acceleration folding, including the first power supply+VCC2With second source+VCC1, when relay needs to open, voltage-multiplying circuit is by second source+VCC1It improves to 2*(+VCC1), the driving voltage realization as relay is quickly open-minded, and after relay is opened, relay winding voltage is switched to+V by delay and driving voltage switching circuitCC2As voltage is kept, when relay needs to turn off, relay voltage is rapidly from+VCC2Become 0, wherein voltage 2*(+VCC1) can directly be provided not set voltage-multiplying circuit by external power supply.The utility model can reduce relay and keep power consumption while realizing that relay quickly opens and closes.
Description
Technical field
The utility model belongs to applied power electronics field, is related to a kind of electricity that relay can be made to accelerate to suit and disconnect
Road, especially a kind of relay accelerate three level driving circuits of folding.
Background technique
Current relay drive circuit mostly uses constant voltage driving method and PWM driving method, constant voltage driving
Method driving circuit it is simple, but the own loss for opening rear relay cannot reduce.The driving method of PWM is opened using one
Then fixed voltage adjusts the voltage for being superimposed upon relay coil by PWM duty cycle to reduce driving energy consumption, but it is applied
It needs single-chip I/O mouth configuration to interrupt, the cpu resource of a part can be consumed, and generally switching frequency is required to want 20KHZ or more, no
Right human ear can hear noise.
Above method is all difficult to realize relay and opens the effect accelerated simultaneously with shutdown, and is difficult to take into account reduction relay
The demand of device driving winding loss.
Utility model content
In view of the problems of the existing technology, the utility model provides a kind of three level driving of the acceleration folding of relay
Circuit can realize that reduction drives energy consumption while accelerating folding.
The utility model provides a kind of three level driving circuits of the acceleration folding of relay, as depicted in figs. 1 and 2, packet
Include the first power supply+VCC2With second source+VCC1, voltage-multiplying circuit, delay and driving voltage switching circuit, wherein+VCC1For relay
Device recommends normal drive voltage ,+VCC2For the holding voltage of relay； +VCC1It is promoted by voltage-multiplying circuit to about 2*(+VCC1) mention
It is open-minded to supply relay, after relay is opened, delay will supply the voltage of relay by 2*(+ with driving voltage switching circuit
VCC1) it is switched to+VCC2, so that both end voltage is maintained at+V when relay is keptCC2, when relay needs to turn off, relay around
Group both end voltage is immediately turned into 0.Relay winding voltage is off state, 2*(+V when being 0CC1) it is to accelerate turning-on voltage ,+VCC2
For maintenance voltage, therefore there are three types of level to form for the driving voltage of relay.
Further ,+the VCC1Greater than+VCC2。
Further, the voltage-multiplying circuit includes triode Q1, triode Q2, capacitor C1, diode D1, diode D2,
Resistance R1, resistance R2, resistance R3, resistance R4.Diode D1 be zener diode, effect be when relay from open to disconnect
When, there are backward voltages for b point, play the role of clamper b point voltage, prevent triode CE extremely breakdown.
Further, the delay and driving voltage switching circuit include triode Q3, triode Q4, triode Q5,
Resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, capacitor C2.
Further, the 2*(+VCC1) voltage is directly by external power supply 2*(+VCC1) provide, it is not provided with voltage-multiplying circuit.
Illustrate the working principle of the utility model with reference to the accompanying drawing.As shown in Figures 2 and 3, when in Fig. 2 a point input it is low
When level, if this moment is 0 moment, triode Q1, Q2, Q5 cut-off, Q3, Q4 conducting, so that C point voltage is defeated by two-way voltage
Enter: being respectivelyWherein, VD3For the forward conduction voltage drop of diode D3, VCE3For triode Q3's
The pressure drop of the pole CE) and, due to, so most
EventuallyIt (since the synergistic effect of circuit is very small, so ignoring the superposition of voltage, takes most
Big voltage value).D point is due to connecting R4 to e point (0 potential point).The both ends pressure drop of capacitor C1 at this time are as follows:.Since Q1 ends, the voltage at relay driving winding both ends, relay is not
Movement.
When a point input high level in Fig. 2, if this moment is the t1 moment, Q1 is first connected, so that b point voltage is 0, simultaneously
So that triode Q2 becomes on state by off state, d point voltage is become by 0, according to electricity
Hold the principle that both end voltage cannot be mutated, c point voltage will will become:, the voltage at relay driving winding both ends is by 0 change
At:, about 2 times of+VCC1, relay will be rapid
It is open-minded.
Then the voltage at the both ends capacitor C1 is according to capacitor discharge time are as follows:, wherein, RLFor
The driving winding impedance of relay.
The a point input high level from Fig. 2, i.e. t1 moment start, are delayed by RC:(the conducting threshold voltage that 0.7V is triode Q5), Q5 is connected at this time, Q2, Q3, and Q4 is cut
Only, d point is rapidly decreased to 0V, since relay driving winding is also rapidly depleting energy, so c point voltage instantaneous can drop to, the voltage is kept ever since.
Low level is become by high level in t3 moment a point, Q1 becomes to end by being connected at this time, relay driving winding both ends
Voltage is immediately turned into 0V.Triode Q2, Q5 cut-off, Q3, Q4 conducting, circuit have come back to the state at 0 moment, are next time
Movement is ready.
The technical solution of the utility model has following advantage: (1) being driven when relay is opened using about 2 times of normal recommendeds
Dynamic voltage 2*(+VCC1) (this certain 2*(+VCC1) voltage be also possible to an external voltage being combined into, to save times
Volt circuit) so that relay is opened speed and is greatly improved；Minimum maintenance voltage+V is utilized when shutdownCC2It is risen as shutdown voltage
Point, once shutdown movement starts, maintenance voltage is immediately lower than normal level, and relay is threaded off at once, so that turn-off speed
It greatly improves.(2)+the V of this circuitCC2For the maintenance voltage of relay, which is input from the outside, not by+VCC1Influence, energy
Different maintenance voltages is selected according to the different characteristic of different relays, greatly improves the applicability and best ginseng of this circuit
Number flexibility.(3) the holding low-voltage of relay is the most low hold voltage that relay is recommended, so that the entirety of relay
Driving power consumption is maintained to substantially reduce, temperature rise caused by relay driving winding is also maintained at lowest temperature rise amount.(4) this circuit is defeated
Enter control and only need common I/O port mode (high/low level), is not take up CPU interrupt resources, saves answering for entire circuit design
Polygamy.It (5) is off state, 2*(+V when relay winding voltage is 0CC1) it is to accelerate turning-on voltage ,+VCC2For maintenance voltage,
There are three types of level to form for the driving voltage of relay, can reduce relay while realizing that relay quickly opens and closes and keep
Power consumption is suitable for uninterruptible power supply, the power electronic equipments such as photovoltaic energy storage inverter with off-network UPS function.
In short, this patent circuit structure is simple, control is simple, at low cost, portable strong, from switching speed, power consumption, temperature
From the point of view of rising level of aggregation, the utility model can perform to the performance of relay ultimate attainment.
Detailed description of the invention
Fig. 1 is that the relay of embodiment 1 accelerates three level driving circuit system block diagrams of folding.
Fig. 2 is that the relay of embodiment 1 accelerates three level driving circuit schematic diagrames of folding.
Fig. 3 is the timing and waveform diagram of the relay both end voltage of embodiment 1.
Fig. 4 is that the relay of embodiment 2 accelerates three level driving circuit system block diagrams of folding.
Fig. 5 is that the relay of embodiment 2 accelerates three level driving circuit schematic diagrames of folding.
Fig. 6 is the timing and waveform diagram of 2 relay both end voltage of embodiment.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, so that those skilled in the art can better understand
The utility model can be simultaneously practiced.
Embodiment 1.
As depicted in figs. 1 and 2, three level driving circuits for providing a kind of relay acceleration folding include voltage doubling unit, times
Pressure unit includes triode Q1, triode Q2, capacitor C1, diode D1, diode D2, resistance R1, resistance R2, resistance R3, electricity
Hinder R4 composition；It further include delay and driving voltage switching circuit, delay and driving voltage switching circuit include triode Q3, and three
Pole pipe Q4, triode Q5, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, capacitor C2；Further include the first power supply+
VCC2And second source+VCC1, driving voltage+VCC1Greater than+VCC2, +VCC2It, can be relay for the hold voltage of relay
It maintains effective action state and power consumption maintains optimum level ,+VCC1Recommend normal drive voltage for relay.D1 is steady
Diode is pressed, it acts as when relay is from when opening to disconnection, there are backward voltages for b point, play the work of clamper b point voltage
With preventing triode CE extremely breakdown.
Relay both end voltage timing and waveform diagram as indicated at 3, when a point input low level in Fig. 2, if this moment is 0
Moment, triode Q1, Q2, Q5 cut-off, Q3, Q4 conducting, so that C point voltage is by two-way voltage input: being respectively(wherein, VD3For the forward conduction voltage drop of diode D3, VCE3For the pressure of the pole CE of triode Q3
Drop) and, due to, so finally(since the synergistic effect of circuit is very small, so ignoring the superposition of voltage, take maximum
Voltage value)；D point is due to connecting R4 to e point (0 potential point).The both ends pressure drop of capacitor C1 at this time is, is since Q1 ends, the voltage at relay driving winding both ends, relay
It is failure to actuate.
When a point input high level in Fig. 2, if this moment is the t1 moment, Q1 is first connected, so that b point voltage is 0, simultaneously
So that triode Q2 becomes on state by off state, d point voltage is become by 0, according to electricity
Hold the principle that both end voltage cannot be mutated, c point voltage will will become:, the voltage at relay driving winding both ends is by 0 change
At:, about 2*(+VCC1), relay will be opened rapidly
It is logical；Then the voltage at the both ends capacitor C1 will be consumed in resistive loadOn, RLFor the driving winding of relay
Impedance.
The a point input high level from Fig. 2, i.e. t1 moment start, are delayed by RC:,Capacitor both end voltage becomes at this time:
, at the t2 moment, Q5 conducting, Q2, Q3, Q4 cut-off, d point is rapidly decreased to 0V, simultaneously because relay driving winding is also quickly disappearing
Energy consumption, so c point voltage instantaneous can drop to, the voltage is kept ever since.
Low level is become by high level in t3 moment a point, Q1 becomes to end by being connected at this time, relay driving winding both ends
Voltage is immediately turned into 0V. triode Q2, and Q5 cut-off, Q3, Q4 conducting, circuit has come back to the state at 0 moment, for next time
Movement be ready.
Embodiment 2.
As shown in Figure 4 and Figure 5, three level driving circuits that another relay accelerates folding are provided, driving circuit includes
Triode Q1, diode D1, resistance R1, resistance R2 further include being delayed and driving voltage switching circuit, delay and driving voltage
Switching circuit includes triode Q3, triode Q4, triode Q5, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9,
Capacitor C2；It further include the first power supply+VCC2And second source 2*(+VCC1), driving voltage 2*(+VCC1) it is greater than+VCC2,+VCC2For
The hold voltage of relay can maintain relay effective action state and power consumption maintains optimum level ,+VCC1For
Relay recommends normal drive voltage.D1 is zener diode, and it acts as when relay is from when opening to disconnection, b point exists
Backward voltage plays the role of clamper b point voltage, prevents triode CE extremely breakdown.
Relay both end voltage timing and waveform diagram as indicated with 6, when a point input low level in Fig. 5, if this moment is 0
Moment, triode Q1, Q5 cut-off, Q3, Q4 conducting, so that C point voltage is by two-way voltage input: being respectively(VD3For the forward conduction voltage drop of diode D3, VCE3For the pressure of the pole CE of triode Q3
Drop) and, due to, so finallyIt (since the synergistic effect of circuit is very small, so ignoring the superposition of voltage, takes
Maximum voltage value).Since Q1 ends, the voltage at relay driving winding both ends, relay is failure to actuate.
When a point input high level in Fig. 5, if this moment is the t1 moment, Q1 is first connected, so that b point voltage is 0, simultaneously
So that triode Q2 becomes on state by off state, d point voltage is become by 0, the voltage at relay driving winding both ends becomes by 0:, about 2*(+VCC1), relay will be open-minded rapidly；Then a point is defeated from Fig. 5
Entering high level, i.e. the t1 moment starts, it is delayed by RC:, at the t2 moment, Q5
Conducting, Q3, Q4 cut-off, relay driving winding voltage moment can drop to, the electricity is kept ever since
Pressure.
Low level is become by high level in t3 moment a point, Q1 becomes to end by being connected at this time, relay driving winding both ends
Voltage is immediately turned into 0V, and triode Q5 cut-off, Q3, Q4 conducting, circuit has come back to the state at 0 moment, for moving next time
It is ready.
Those skilled in the art are on the basis of the utility model, as long as being related to the second driving power+VCC2Addition,
Delay and driving voltage switching circuit can be provided with other circuit forms, while be also belonged within the scope of this patent.This is practical
Novel protection scope is subject to claims.
Claims (8)
1. three level driving circuits that a kind of relay accelerates folding, it is characterised in that: including the first power supply+VCC2With the second electricity
Source+VCC1, voltage-multiplying circuit, delay and driving voltage switching circuit, wherein+VCC1Recommend normal drive voltage ,+V for relayCC2
For the holding voltage of relay； +VCC1It is promoted by voltage-multiplying circuit to about 2*(+VCC1) to be supplied to relay open-minded, work as relay
After opening, delay will supply the voltage of relay by 2*(+V with driving voltage switching circuitCC1) it is switched to+VCC2, so that relay
Both end voltage is maintained at+V when device is keptCC2, when relay needs to turn off, relay winding both end voltage is immediately turned into 0.
2. three level driving circuits that a kind of relay according to claim 1 accelerates folding, it is characterised in that: described+
VCC1Greater than+VCC2。
3. three level driving circuits that a kind of relay according to claim 1 or 2 accelerates folding, it is characterised in that: institute
Stating voltage-multiplying circuit includes triode Q1, triode Q2, capacitor C1, diode D1, diode D2, resistance R1, resistance R2, resistance
R3, resistance R4.
4. three level driving circuits that a kind of relay according to claim 1 or 2 accelerates folding, it is characterised in that: institute
Stating delay and driving voltage switching circuit includes triode Q3, triode Q4, triode Q5, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, capacitor C2.
5. three level driving circuits that a kind of relay accelerates folding, it is characterised in that: including the first power supply+VCC2With the second electricity
Source 2*(+VCC1), delay with driving voltage switching circuit, wherein+VCC1Recommend normal drive voltage ,+V for relayCC2For relay
The holding voltage of device；Second source 2*(+VCC1) relay turning-on voltage 2*(+V is providedCC1), after relay is opened, delay with
Driving voltage switching circuit will supply the voltage of relay by 2*(+VCC1) it is switched to+VCC2, so that both ends electricity when relay is kept
Pressure is maintained at+VCC2, when relay needs to turn off, relay winding both end voltage is immediately turned into 0.
6. three level driving circuits that a kind of relay according to claim 5 accelerates folding, it is characterised in that: described+
VCC1Greater than+VCC2。
7. three level driving circuits that a kind of relay according to claim 5 or 6 accelerates folding, it is characterised in that: institute
Stating driving circuit further includes triode Q1, diode D1, resistance R1, resistance R2.
8. three level driving circuits that a kind of relay according to claim 5 or 6 accelerates folding, it is characterised in that: institute
Stating delay and driving voltage switching circuit includes triode Q3, triode Q4, triode Q5, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820527529.2U CN208368431U (en) | 2018-04-13 | 2018-04-13 | A kind of relay accelerates three level driving circuits of folding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820527529.2U CN208368431U (en) | 2018-04-13 | 2018-04-13 | A kind of relay accelerates three level driving circuits of folding |
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| Publication Number | Publication Date |
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| CN208368431U true CN208368431U (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820527529.2U Active CN208368431U (en) | 2018-04-13 | 2018-04-13 | A kind of relay accelerates three level driving circuits of folding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321019A (en) * | 2018-04-13 | 2018-07-24 | 深圳鹏城新能科技有限公司 | A kind of relay accelerates three level driving circuits of folding |
| CN109887802A (en) * | 2019-03-28 | 2019-06-14 | 欣旺达电子股份有限公司 | Relay drive circuit |
-
2018
- 2018-04-13 CN CN201820527529.2U patent/CN208368431U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321019A (en) * | 2018-04-13 | 2018-07-24 | 深圳鹏城新能科技有限公司 | A kind of relay accelerates three level driving circuits of folding |
| CN109887802A (en) * | 2019-03-28 | 2019-06-14 | 欣旺达电子股份有限公司 | Relay drive circuit |
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