CN109743050A - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN109743050A CN109743050A CN201910224248.9A CN201910224248A CN109743050A CN 109743050 A CN109743050 A CN 109743050A CN 201910224248 A CN201910224248 A CN 201910224248A CN 109743050 A CN109743050 A CN 109743050A
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- 230000005611 electricity Effects 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000010411 cooking Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention provides a kind of drive control circuit and household appliances, wherein, drive control circuit includes: latch-in relay, and the moving contact of latch-in relay accesses in network system, when latch-in relay is in energized state, network system can be controlled and powered to the load；First relay, first relay is set there are four contact, the first contact and the second contact in four contacts are normally-closed contact, third contact and the 4th contact in four contacts are normally opened contact, first contact and the 4th contact are connected to power supply source, second contact and third contact are connected to ground wire, the moving contact of first relay is connected to the control terminal of latch-in relay, first relay is configured as to latch-in relay output pulse signal, and pulse signal is high level pulse signal or low level pulse signal.According to the technical solution of the present invention, the power consumption of drive control circuit is reduced, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend service life.
Description
Technical field
The present invention relates to field of circuit technology, in particular to a kind of drive control circuit and a kind of household appliance.
Background technique
Relay is widely used in drive control circuit as a kind of control component, plays automatic adjustment, safety is protected
The effects of shield, conversion circuit.
For example, in the drive control circuit of the outdoor unit of frequency-conversion air-conditioning system, input AC electricity mistake when to avoid powering on
Large impact capacitor often limits charging current using traditional relay, i.e., by control relay power or power-off, and
Change the power supply state of drive control circuit.
In the related technology, as shown in Figure 1, traditional relay is in closed state, and tradition when control circuit works
Relay and a positive temperature coefficient thermo-sensitive resistor RpctParallel connection, traditional relay are closed (a control under power-up state
Terminate into power supply source VCC, a control terminal is grounded GND), ac signal AC is input to whole through the moving contact of relay at this time
Fluid element, starting load operates after capacitive element C boosting, i.e., need to persistently remain powered on, this just at least has following technical problem:
(1) power supply state of drive control circuit is controlled due to needing lasting energization, drive control circuit can be improved
Power consumption.
It (2) is 50Hz since load is usually frequency on relay, virtual value is the AC signal of 220V, therefore, is kept
Relay is persistently powered, and there are leakage risks.
(3) if frequently carrying out power-on servicing and power operation to relay, it will lead in drive control circuit and occur
The disturbing pulses such as surging signal and ripple signal, this will lead to some components steep temperature rise in drive control circuit, very
To being burned out, this not only will affect the reliability of local device, can also improve the hot crosstalk in drive control circuit.
Summary of the invention
The present invention is directed at least solve one of above-mentioned technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of drive control circuits.
It is another object of the present invention to propose a kind of household appliance.
To achieve the above object, according to the embodiment of the first aspect of the invention, a kind of drive control circuit is proposed, is wrapped
Include: the moving contact of latch-in relay, the latch-in relay accesses in network system, and the latch-in relay is in
When energized state, the network system can be controlled and powered to the load；First relay, first relay set there are four touching
Point, the first contact and the second contact in four contacts are normally-closed contact, third contact in four contacts and the
Four contacts are normally opened contact, and first contact and the 4th contact are connected to power supply source, second contact and described the
Three contacts are connected to ground wire, and the moving contact of first relay is connected to the control terminal of the latch-in relay, and described
One relay is configured as to the latch-in relay output pulse signal, the pulse signal be high level pulse signal or
Low level pulse signal, wherein if the first control terminal of the latch-in relay receives the high level pulse signal, together
When, the second control terminal of the latch-in relay receives the low level pulse signal, then the latch-in relay
Moving contact carries out movement switching, and the state after the upper primary movement switching, institute are kept before receiving next pulse signal
It states movement and is switched to and disconnection is switched to by closure, or closure is switched to by disconnection.
Drive control circuit according to an embodiment of the present invention, by the way that latch-in relay is arranged in drive control circuit,
It, can be by mechanical structure self-sustaining, without persistently leading to after energization since latch-in relay is a kind of mechanical relay
Electricity, this greatly reduces energy consumption, the working time is longer, average energy consumption for occasion in running order for a long time
It is fewer, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend each member in above-mentioned drive control circuit
The service life of device.
In addition, driven by using the first relay to latch-in relay, and the first relay have it is above-mentioned
Four contacts limited, therefore, by the movement of the moving contact of the first relay to latch-in relay output pulse signal,
When two control terminals of latch-in relay are respectively high level and low level, it is able to carry out movement switching, and then control power grid
The process of system input exchange signal.
Wherein, it is worth it is emphasized that the first relay does not need to be kept powered on state yet, it is complete in latch-in relay
Electric under the first relay after movement switching, two control terminals of latch-in relay are low level, after keeping switching at this time
Action state.
Finally, power supply source is preferably the DC source of 5V, 12V or 24V.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the second relay is set to described
Power supply line between first relay and the power supply source, for controlling power supply line's closing or opening；If described
Two relays power on, then power supply line's closure between first relay and the power supply source, meanwhile, first contact
With the 4th contact be high level state and second contact and the third contact is low level state；If described
Electric under second relay, then the power supply line between first relay and the power supply source is disconnected.
Drive control circuit according to an embodiment of the present invention passes through the power supply line between the first relay and power supply source
The second relay of upper setting, and the second relay powers on to control whether the first relay powers on, namely in the first relay
When, it, can be to two controls of latch-in relay after the moving contact of the second relay acts after the second relay also powers on
End output high level pulse signal and low level pulse signal processed, and then control latch-in relay and carry out movement switching.
Drive control circuit according to the above embodiment of the present invention, it is preferable that first relay is double-pole double throw type
Relay, if electric under first relay, and second relay is powered on, then the moving contact of first relay and institute
It states the first contact and the second contact is in contact, meanwhile, first contact is high level state, and second contact is low level
The moving contact of state, the latch-in relay carries out movement switching.
Drive control circuit according to an embodiment of the present invention is double-pole double throw type relay by the first relay of setting,
And when the second relay powers on, if the first relay is in power-down state, the setting of relay normally closed contact is given, first
Contact is high level state, and second contact is low level state, at this point, the moving contact of the first relay is to self-sustaining relay
Two control terminals of device export high level pulse signal and low level pulse signal respectively, cut in latch-in relay execution
It, can be to electricity under the second relay, further to reduce the power consumption of drive control circuit after changing.
Drive control circuit according to the above embodiment of the present invention, it is preferable that first relay is double-pole double throw type
Relay, if first relay powers on, and second relay powers on, then the moving contact of first relay and institute
Third contact and the 4th contact is stated to be in contact, meanwhile, the third contact is low level state, and the 4th contact is high level
The moving contact of state, the latch-in relay carries out movement switching.
Drive control circuit according to an embodiment of the present invention is double-pole double throw type relay by the first relay of setting,
And when the second relay powers on, the first relay also enters power-up state, at this point, the moving contact of the first relay is by normally closed touching
Point switches to normally opened contact, i.e. moving contact contact third contact and the 4th contact, meanwhile, two controls to latch-in relay
The pulse signal overturning of end input, and then the moving contact of latch-in relay carries out movement switching.
Drive control circuit according to the above embodiment of the present invention, it is preferable that first relay is double-pole double throw type
Relay, if electric under first relay and electric under second relay, then the moving contact of the latch-in relay is not
Movement switching is carried out, and before receiving next pulse signal, the moving contact of the latch-in relay keeps last
State after movement switching.
Drive control circuit according to an embodiment of the present invention is double-pole double throw type relay by the first relay of setting,
And after controlling the first relay and the second relay with electricity at present, the moving contact of latch-in relay is able to maintain movement and cuts
State after changing, can not only power supply process Process flowchart to network system, and reduce power consumption penalty, meanwhile, also drop
The low electric leakage hidden danger of drive control circuit.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the temperature sensitive electricity of the first positive temperature coefficient
Resistance, the first positive temperature coefficient thermo-sensitive resistor are parallel to the latch-in relay, the temperature sensitive electricity of the first positive temperature coefficient
Resistance is configured as carrying out current limliting processing to the electric energy that the network system inputs, wherein the moving contact of the latch-in relay
When disconnection, the electric energy of the network system input is through the first positive temperature coefficient thermo-sensitive resistor to the load supplying or institute
State the moving contact of latch-in relay in the closure state, the electric energy of the network system input is through the latch-in relay
Moving contact to the load supplying.
Drive control circuit according to an embodiment of the present invention, by be arranged the first positive temperature coefficient thermo-sensitive resistor, and with from
Guard relay is in parallel, on the one hand, in latch-in relay closure, network system through latch-in relay to load supplying,
On the other hand, when latch-in relay disconnects, network system is powered load through the first positive temperature coefficient thermo-sensitive resistor,
First positive temperature coefficient thermo-sensitive resistor can absorb the electric arc that power-off generates or surging signal etc., in another aspect, flowing through first
When the AC signal of positive temperature coefficient thermo-sensitive resistor is larger, the resistance value of the first positive temperature coefficient thermo-sensitive resistor usually exponentially increases
It is long, it is at this time off state between network system and load, also timely and effectively AC signal can be blocked to rush load
It hits.
Wherein, positive temperature coefficient typically refers to Positive Temperature Coefficient, therefore, positive temperature system
Number thermo-sensitive resistor is often simply referred to as PTC.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the temperature sensitive electricity of the second positive temperature coefficient
Resistance, the second positive temperature coefficient thermo-sensitive resistor are parallel to second relay, the second positive temperature coefficient thermo-sensitive resistor
It is configured as carrying out current limliting processing to second relay；Wherein, when the moving contact of second relay disconnects, the confession
The electric energy of power input powers to first relay through the second positive temperature coefficient thermo-sensitive resistor；Or second relay
In the closure state, moving contact of the electric energy through second relay of power supply source input is to described for the moving contact of device
The power supply of one relay.
Drive control circuit according to an embodiment of the present invention, by being arranged the second positive temperature coefficient thermo-sensitive resistor, and with the
Two relays are in parallel, on the one hand, in the second relay closure, power supply source is through the second positive temperature coefficient thermo-sensitive resistor to described the
The power supply of one relay, on the other hand, when the second relay disconnects, power supply source is through the second positive temperature coefficient thermo-sensitive resistor to first
Relay is powered, and the second positive temperature coefficient thermo-sensitive resistor can absorb the electric arc that power-off generates or surging signal etc., further
Aspect, when the AC signal for flowing through the second positive temperature coefficient thermo-sensitive resistor is larger, the resistance of the second positive temperature coefficient thermo-sensitive resistor
Value is usually exponentially increased, and is at this time off state between power supply source and the first relay, also can timely and effectively be blocked
Impact of the AC signal to the first relay.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: rectifier cell is accessed in described
Between latch-in relay and the load, the rectifier cell is configured as the ac signal for exporting the network system
DC signal is converted to, the DC signal is configured as to the load supplying.
Drive control circuit according to an embodiment of the present invention, by latch-in relay and loading rectifier cell access
Between, ac signal is converted into DC signal, and then can be adjusted to the power factor of DC signal, with
Adjust the running frequency and working efficiency of load.
Wherein, rectifier cell is usually bridge architecture, and each bridge arm includes a diode, the cathode of any diode
Connect with the anode with neighboring diode and the anode of any diode connects with the cathode of another neighboring diode.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: capacitive element is set to described whole
Between the output end of fluid element and the input terminal of the load, for filtering out exchanging between the rectifier cell and the load
Signal.
Drive control circuit according to an embodiment of the present invention, by the input that capacitive element is set to rectifier cell and load
Between end, on the one hand, capacitive element helps to reduce impact of the ripple signal to load in power up, on the other hand, capacitive
Element is usually to have energy-storage function, therefore, being capable of starting load when load potential difference is sufficiently large on capacitive element.
Wherein, capacitive element can be one or more capacitors, be accessed in a manner of series connection/or parallel connection, for example, capacitive member
Part can be an electrolytic capacitor, be also possible to thin-film capacitor, but not limited to this.
Drive control circuit according to the above embodiment of the present invention, it is preferable that the load comprises at least one of the following: straight
Galvanic electricity machine, alternating current generator, fluorescent tube, display and buzzer.
A kind of embodiment according to the second aspect of the invention, it is also proposed that household appliance, comprising: load；Such as above-mentioned
One technical solution limits drive control circuit, and drive control circuit, drive control circuit access is in network system and load
Between, drive control circuit is configured as control network system and powers to the load.
Drive control circuit according to the above embodiment of the present invention, it is preferable that household appliance include air conditioner, refrigerator,
At least one of fan, cooking apparatus, lighting apparatus, audio-visual devices and cleaning equipment.
Household appliance according to an embodiment of the present invention has whole technical effects of above-mentioned drive control circuit, herein not
It repeats again.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 shows the schematic diagram of drive control circuit in the prior art；
Fig. 2 shows the schematic diagrames of drive control circuit according to an embodiment of the invention；
Fig. 3 shows the schematic diagram of drive control circuit according to another embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 2 shows the schematic diagrames of drive control circuit according to an embodiment of the invention.
Fig. 3 shows the schematic diagram of drive control circuit according to another embodiment of the invention.
As shown in Figures 2 and 3, the drive control circuit of embodiment according to the present invention, comprising: latch-in relay Q2,
The latch-in relay Q2Moving contact access in network system, the latch-in relay Q2When in energized state, energy
The network system is enough controlled to power to the load；First relay Q1, the first relay Q1If there are four contact, four institutes
State the first contact P in contact1With the second contact P2Third contact P for normally-closed contact, in four contacts3With the 4th touching
Point P4For normally opened contact, the first contact P1With the 4th contact P4It is connected to power supply source VCC, the second contact P2With
The third contact P3It is connected to ground wire GND, the first relay Q1Moving contact be connected to the latch-in relay Q2's
Control terminal, the first relay Q1It is configured as to the latch-in relay Q2Output pulse signal, the pulse signal are
High level pulse signal or low level pulse signal, wherein if the latch-in relay Q2The first control terminal receive institute
High level pulse signal is stated, meanwhile, the latch-in relay Q2The second control terminal receive the low level pulse signal,
The then latch-in relay Q2Moving contact carry out movement switching, and upper primary institute is kept before receiving next pulse signal
State after stating movement switching, the movement, which is switched to, switches to disconnection by closure, or switches to closure by disconnection.
Drive control circuit according to an embodiment of the present invention, by the way that latch-in relay is arranged in drive control circuit
Q2, due to latch-in relay Q2It is a kind of mechanical relay, it can be by mechanical structure self-sustaining, without holding after energization
Continuous to be powered, this greatly reduces energy consumption for occasion in running order for a long time, and the working time is longer, average
Energy consumption is fewer, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend in above-mentioned drive control circuit
The service life of each component.
In addition, by using the first relay Q1To latch-in relay Q2It is driven, and the first relay Q1Have
Therefore four contacts of above-mentioned restriction pass through the first relay Q1Moving contact movement to latch-in relay Q2Export pulse
Signal, in latch-in relay Q2Two control terminals when being respectively high level and low level, be able to carry out movement switching, in turn
Control the process of network system input exchange signal.
Wherein, it is worth it is emphasized that the first relay Q1It does not need to be kept powered on state, in latch-in relay yet
Q2After execution switching, the first relay Q1Lower electricity, latch-in relay Q2Two control terminals be low level, keep at this time
Action state after switching.
Finally, power supply source VCC is preferably the DC source of 5V, 12V or 24V.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the second relay Q3, it is set to institute
State the first relay Q1With the power supply line between the power supply source VCC, for controlling power supply line's closing or opening；If
The second relay Q3It powers on, then the first relay Q1Power supply line's closure between the power supply source VCC, meanwhile,
The first contact P1With the 4th contact P4For high level state and the second contact P2With the third contact P3
For low level state；If the second relay Q3Lower electricity, then the first relay Q1With the confession between the power supply source VCC
Electric line is disconnected.
Drive control circuit according to an embodiment of the present invention, by the first relay Q1With the confession between power supply source VCC
Second relay Q is set in electric line3, and the second relay Q3To control the first relay Q1Whether power on, namely first
Relay Q1When powering on, the second relay Q3Also after powering on, the second relay Q3Moving contact act after, can be to self-insurance
Hold relay Q2Two control terminals output high level pulse signal and low level pulse signal, and then control latch-in relay
Q2Carry out movement switching.
As shown in Fig. 2, drive control circuit according to the above embodiment of the present invention, it is preferable that the first relay Q1
For double-pole double throw type relay, if the first relay Q1Lower electricity, and the second relay Q3Power on, then described first after
Electric appliance Q1Moving contact be in contact with first contact and the second contact, meanwhile, the first contact P1For high level state,
The second contact P2For low level state, the latch-in relay Q2Moving contact carry out movement switching.
Drive control circuit according to an embodiment of the present invention, by the way that the first relay Q is arranged1For double-pole double throw type relay
Device, and in the second relay Q3When powering on, the first relay Q1If being in power-down state, setting for relay normally closed contact is given
It sets, the first contact P1For high level state, the second contact P2For low level state, at this point, the first relay Q1Moving contact
To latch-in relay Q2Two control terminals export high level pulse signal and low level pulse signal respectively, self-sustaining after
Electric appliance Q2It, can be to the second relay Q after execution switching3Lower electricity, further to reduce the power consumption of drive control circuit.
As shown in figure 3, drive control circuit according to the above embodiment of the present invention, it is preferable that the first relay Q1
For double-pole double throw type relay, if the first relay Q1It powers on, and the second relay Q3Power on, then described first after
Electric appliance Q1Moving contact and the third contact P3With the 4th contact P4It is in contact, meanwhile, the third contact P3For low level shape
State, the 4th contact P4For high level state, the latch-in relay Q2Moving contact carry out movement switching.
Drive control circuit according to an embodiment of the present invention, by the way that the first relay Q is arranged1For double-pole double throw type relay
Device, and in the second relay Q3When powering on, the first relay Q1Also enter power-up state, at this point, the first relay Q1Moving contact
Normally opened contact is switched to by normally-closed contact, i.e. moving contact contacts third contact P3With the 4th contact P4, meanwhile, to self-sustaining relay
Device Q2The input of two control terminals pulse signal overturning, and then latch-in relay Q2Moving contact carry out movement switching.
Drive control circuit according to the above embodiment of the present invention, it is preferable that the first relay Q1For double-pole double throw
Type relay, if the first relay Q1Lower electricity, and the second relay Q3Lower electricity, then the latch-in relay Q2's
Moving contact switches without movement, and before receiving next pulse signal, the latch-in relay Q2Moving contact
State after keeping last movement switching.
Drive control circuit according to an embodiment of the present invention, by the way that the first relay Q is arranged1For double-pole double throw type relay
Device, and controlling the first relay Q1With the second relay Q3After electricity at present, latch-in relay Q2Moving contact can protect
State after holding movement switching, can not only power supply process Process flowchart to network system, and reduce power consumption penalty, together
When, also reduce the electric leakage hidden danger of drive control circuit.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the temperature sensitive electricity of the first positive temperature coefficient
Hinder Rptc, the first positive temperature coefficient thermo-sensitive resistor RptcIt is parallel to the latch-in relay Q2, the first positive temperature system
Number thermo-sensitive resistor RptcIt is configured as carrying out current limliting processing to the electric energy that the network system inputs, wherein the self-sustaining relay
Device Q2Moving contact when disconnecting, the electric energy of network system input is through the first positive temperature coefficient thermo-sensitive resistor RptcTo institute
State load supplying or the latch-in relay Q2Moving contact in the closure state, the electric energy of network system input
Through the latch-in relay Q2Moving contact to the load supplying.
Drive control circuit according to an embodiment of the present invention, by the way that the first positive temperature coefficient thermo-sensitive resistor R is arrangedptc, and with
Latch-in relay Q2It is in parallel, on the one hand, in latch-in relay Q2When closure, network system is through latch-in relay Q2To negative
Power supply is carried, on the other hand, in latch-in relay Q2When disconnection, network system is through the first positive temperature coefficient thermo-sensitive resistor RptcIt is right
Load is powered, the first positive temperature coefficient thermo-sensitive resistor RptcElectric arc or the surging signal etc. that power-off generates can be absorbed, further
Aspect is flowing through the first positive temperature coefficient thermo-sensitive resistor RptcAC signal it is larger when, the first positive temperature coefficient thermo-sensitive resistor
RptcResistance value be usually exponentially increased, at this time network system and load between be in off state, also can timely and effectively hinder
Disconnected impact of the AC signal to load.
Wherein, positive temperature coefficient typically refers to Positive Temperature Coefficient, therefore, positive temperature system
Number thermo-sensitive resistor RptcIt is often simply referred to as PTC.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: the temperature sensitive electricity of the second positive temperature coefficient
Hinder Rptc, the second positive temperature coefficient thermo-sensitive resistor RptcIt is parallel to the second relay Q3, second positive temperature coefficient
Thermo-sensitive resistor RptcIt is configured as to the second relay Q3Carry out current limliting processing；Wherein, the second relay Q3Dynamic touching
When head disconnects, the electric energy of the power supply source VCC input is through the second positive temperature coefficient thermo-sensitive resistor RptcTo first relay
Device Q1Power supply；Or the second relay Q3Moving contact in the closure state, the electric energy of power supply source VCC input is through institute
State the second relay Q3Moving contact to the first relay Q1Power supply.
Drive control circuit according to an embodiment of the present invention, by the way that the second positive temperature coefficient thermo-sensitive resistor R is arrangedptc, and with
Second relay Q3It is in parallel, on the one hand, in the second relay Q3When closure, power supply source VCC is through the second positive temperature coefficient thermo-sensitive resistor
RptcTo the first relay Q1Power supply, on the other hand, in the second relay Q3When disconnection, power supply source VCC is through the second positive temperature
Coefficient thermo-sensitive resistor RptcTo the first relay Q1It is powered, the second positive temperature coefficient thermo-sensitive resistor RptcPower-off can be absorbed to produce
Raw electric arc or surging signal etc., in another aspect, flowing through the second positive temperature coefficient thermo-sensitive resistor RptcAC signal it is larger
When, the second positive temperature coefficient thermo-sensitive resistor RptcResistance value be usually exponentially increased, power supply source VCC and the first relay Q at this time1
Between be in off state, also can timely and effectively block AC signal to the first relay Q1Impact.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: rectifier cell is accessed in described
Latch-in relay Q2Between the load, the rectifier cell is configured as the exchange telecommunications for exporting the network system
Number AC is converted to DC signal, and the DC signal is configured as to the load supplying.
Drive control circuit according to an embodiment of the present invention, by accessing rectifier cell in latch-in relay Q2With it is negative
Between load, ac signal AC is converted into DC signal, and then can adjust to the power factor of DC signal
It is whole, to adjust the running frequency and working efficiency of load.
Wherein, rectifier cell is usually bridge architecture, and each bridge arm includes a diode, the cathode of any diode
Connect with the anode with neighboring diode and the anode of any diode connects with the cathode of another neighboring diode.
Drive control circuit according to the above embodiment of the present invention, it is preferable that further include: capacitive element C is set to described whole
Between the output end of fluid element and the input terminal of the load, for filtering out exchanging between the rectifier cell and the load
Signal.
Drive control circuit according to an embodiment of the present invention, by the way that capacitive element C is set to the defeated of rectifier cell and load
Enter between end, on the one hand, capacitive element C helps to reduce impact of the ripple signal to load in power up, on the other hand, holds
Property element C be usually to have energy-storage function, therefore, on capacitive element C load potential difference it is sufficiently large when, being capable of starting load.
Wherein, capacitive element C can be one or more capacitors, be accessed in a manner of series connection/or parallel connection, for example, capacitive
Element C can be an electrolytic capacitor, be also possible to thin-film capacitor, but not limited to this.
Drive control circuit according to the above embodiment of the present invention, it is preferable that the load comprises at least one of the following: straight
Galvanic electricity machine, alternating current generator, fluorescent tube, display and buzzer.
Embodiment two:
Traditional relay control program there are aiming at the problem that, that is, when working need to continue be powered, this embodiment introduces
Latch-in relay control program, latch-in relay are a kind of mechanical relay, in short, can pass through machinery after being powered
Structure self-sustaining no longer needs to be powered, and for occasion in running order for a long time, greatly reduces energy consumption, work
Time is longer, and average energy consumption is fewer.
As shown in Figures 2 and 3, the first relay Q is set in the drive control circuit in the present embodiment1For double-pole double throw type
Relay, Q2As the on-off of the latch-in relay control AC signal in main circuit, to make latch-in relay Q2Work
Make, then latch-in relay Q2Both sides will have a low and high level, therefore control circuit also very simple, that is, construct positive negative circuit.
In addition, drive control circuit further includes traditional the second relay (single group coil) Q3, entire drive control
The course of work of circuit is described in detail below:
First relay Q1It is made of 2 moving contacts and 2 groups of normally opened contacts and normally closed stationary contact.When without electricity, 2 dynamic touchings
Head simultaneously with normally-closed contact (the first contact P1With the second contact P2) contact；When energization, 2 moving contacts move and normally opened touching simultaneously
Point (third contact P3With the 4th contact P4) contact.
Wherein, because of the first relay Q1There are 2 moving contacts, so referred to as double-pole, another because 2 moving contacts move simultaneously, institute
With referred to as double-throw.
As illustrated in fig. 2, it is assumed that the second relay Q3It is powered, the first relay Q1Without electricity, the first contact P at this time1For high electricity
It is flat, the second contact P2For low level, 2 moving contacts respectively with the first contact P1With the second contact P2It contacts, then latch-in relay
Q2Two control terminals be respectively low and high level, into working condition (being assumed to be closure), hereafter can disconnect self-sustaining relay
Device Q2, to save energy consumption, and latch-in relay Q2Working condition can also be maintained constant in lower electricity.
As shown in Figure 3, it is assumed that the second relay Q3It is powered, the first relay Q1Also it is powered, at this time third contact P3For low electricity
It is flat, the 4th contact P4Side is high level, and 2 moving contacts are because of the first relay Q1Be powered then respectively with third contact P3With the 4th touching
Point P4It contacts, at this time latch-in relay Q2Two sides be reversion level, into reversion working condition (it is above-mentioned if closure, then now
To disconnect), it hereafter can disconnect the second relay of relay Q3With the first relay Q1, further to save energy consumption.
Based on above-mentioned drive control circuit, the second relay Q need to be only controlled3With the first relay Q1So that self-sustaining relay
Device Q2Work, and work as latch-in relay Q2Into after working condition, then the second relay Q can be disconnected3With the first relay
Q1, to reduce the power consumption of drive control circuit, meanwhile, it is also beneficial to reduce circuit electric leakage, device heating bring damaged risk,
To extend the service life.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, it is contemplated that in the related technology the technical issues of, this
Invention proposes a kind of drive control circuit and household appliance, by the way that latch-in relay is arranged in drive control circuit, by
In latch-in relay be a kind of mechanical relay, after energization can by mechanical structure self-sustaining, without lasting energization,
This greatly reduces energy consumption, the working time is longer, and average energy consumption is got over for occasion in running order for a long time
It is few, meanwhile, electric leakage, device heating bring damaged risk are reduced, to extend each member device in above-mentioned drive control circuit
The service life of part.
The steps in the embodiment of the present invention can be sequentially adjusted, combined, and deleted according to actual needs, this hair
Component in bright embodiment can be combined, divided and deleted according to actual needs.The above is only preferred implementations of the invention
Example, is not intended to restrict the invention, for those skilled in the art, the present invention can have various changes and change
Change.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention
Protection scope within.
Claims (12)
1. a kind of drive control circuit characterized by comprising
The moving contact of latch-in relay, the latch-in relay accesses in network system, at the latch-in relay
When energized state, the network system can be controlled and powered to the load；
First relay, first relay are set there are four contact, the first contact and the second contact in four contacts
For normally-closed contact, third contact and the 4th contact in four contacts are normally opened contact, first contact and described the
Four contacts are connected to power supply source, and second contact and the third contact are connected to ground wire, the dynamic touching of first relay
Head is connected to the control terminal of the latch-in relay, and first relay is configured as exporting to the latch-in relay
Pulse signal, the pulse signal be high level pulse signal or low level pulse signal,
Wherein, if the first control terminal of the latch-in relay receives the high level pulse signal, meanwhile, the self-insurance
The second control terminal for holding relay receives the low level pulse signal, then the moving contact of the latch-in relay is moved
Work switches, and the state after the upper primary movement switching is kept before receiving next pulse signal, and the movement is switched to
Disconnection is switched to by closure, or closure is switched to by disconnection.
2. drive control circuit according to claim 1, which is characterized in that further include:
Second relay, the power supply line between first relay and the power supply source, for controlling the power supply
Route closing or opening；
If second relay powers on, the power supply line between first relay and the power supply source is closed, meanwhile,
First contact and the 4th contact are high level state and second contact and the third contact is low level
State；
If electric under second relay, the power supply line between first relay and the power supply source is disconnected.
3. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if it is electric under first relay, and on second relay
Electricity, then the moving contact of first relay is in contact with first contact and the second contact, meanwhile, first contact is
High level state, second contact are low level state, and the moving contact of the latch-in relay carries out movement switching.
4. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if first relay powers on, and on second relay
Electricity, then the moving contact of first relay is in contact with the third contact and the 4th contact, meanwhile, the third contact is
Low level state, the 4th contact are high level state, and the moving contact of the latch-in relay carries out movement switching.
5. drive control circuit according to claim 2, which is characterized in that
First relay is double-pole double throw type relay, if it is electric under first relay, and under second relay
Electricity, then the moving contact of the latch-in relay switches without movement, and before receiving next pulse signal, described
The moving contact of latch-in relay keeps the state after last movement switching.
6. the drive control circuit according to any one of claim 2 to 5, which is characterized in that further include:
First positive temperature coefficient thermo-sensitive resistor, the first positive temperature coefficient thermo-sensitive resistor are parallel to the latch-in relay,
The first positive temperature coefficient thermo-sensitive resistor is configured as carrying out current limliting processing to the electric energy that the network system inputs,
Wherein, when the moving contact of the latch-in relay disconnects, the electric energy of the network system input is through the described first positive temperature
Degree system thermo-sensitive resistor to the load supplying,
Or the moving contact of the latch-in relay is in the closure state, the electric energy of the network system input is through the self-insurance
The moving contact of relay is held to the load supplying.
7. the drive control circuit according to any one of claim 2 to 5, which is characterized in that further include:
Second positive temperature coefficient thermo-sensitive resistor, the second positive temperature coefficient thermo-sensitive resistor are parallel to second relay, institute
The second positive temperature coefficient thermo-sensitive resistor is stated to be configured as carrying out current limliting processing to second relay；
Wherein, when the moving contact of second relay disconnects, the electric energy of the power supply source input is through the described second positive temperature system
System thermo-sensitive resistor powers to first relay；
Or the moving contact of second relay is in the closure state, the electric energy of the power supply source input is through second relay
The moving contact of device powers to first relay.
8. drive control circuit according to any one of claim 1 to 5, which is characterized in that further include:
Rectifier cell accesses between the latch-in relay and the load, and the rectifier cell is configured as will be described
The ac signal of network system output is converted to DC signal, and the DC signal is configured as supplying to the load
Electricity.
9. drive control circuit according to claim 8, which is characterized in that further include:
Capacitive element, between the output end of the rectifier cell and the input terminal of the load, for filtering out the rectification
AC signal between element and the load.
10. drive control circuit according to any one of claim 1 to 5, which is characterized in that
The load comprises at least one of the following: direct current generator, alternating current generator, fluorescent tube, display and buzzer.
11. a kind of household appliance characterized by comprising
Load；
Drive control circuit, the drive control circuit access is between the network system and the load, the driving control
Circuit processed is configured as control network system and powers to the load.
12. household appliance according to claim 11, which is characterized in that
The household appliance includes in air conditioner, refrigerator, fan, cooking apparatus, lighting apparatus, audio-visual devices and cleaning equipment
At least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224248.9A CN109743050A (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910224248.9A CN109743050A (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
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| CN109743050A true CN109743050A (en) | 2019-05-10 |
Family
ID=66371246
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910224248.9A Pending CN109743050A (en) | 2019-03-22 | 2019-03-22 | Drive control circuit and household appliance |
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| CN110970262A (en) * | 2019-12-31 | 2020-04-07 | 合肥美的智能科技有限公司 | Drive control device and method for power relay |
| CN111308159A (en) * | 2019-12-02 | 2020-06-19 | 广东美的制冷设备有限公司 | Current estimation method and device of air conditioner, air conditioner and storage medium |
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