CN109869879A - Air conditioner control circuit and its discharge circuit - Google Patents
Air conditioner control circuit and its discharge circuit Download PDFInfo
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- CN109869879A CN109869879A CN201910166454.9A CN201910166454A CN109869879A CN 109869879 A CN109869879 A CN 109869879A CN 201910166454 A CN201910166454 A CN 201910166454A CN 109869879 A CN109869879 A CN 109869879A
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- relay
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Abstract
This application involves a kind of air conditioner control circuit and its discharge circuit, discharge circuit includes: first switch tube, second switch, the first relay, the second relay and discharge assembly.Above-mentioned discharge circuit and air conditioner control circuit, the circuit being made of first switch tube, second switch, the first relay, the second relay and discharge assembly is provided at the both ends of the energy storage device of air conditioner control circuit, when first switch tube and second switch control based on the received signal make respectively the first relay normally closed switch and the second relay normally closed switch closure when, a closed circuit, the power consumption that discharge assembly will quickly can be stored in energy storage device are formed between discharge assembly, the first relay, the second relay and energy storage device.It is operated by the repid discharge of above-mentioned air conditioner control circuit and its discharge circuit, effectively increases the replacement efficiency of controller of air conditioner, while also having the advantages that security performance is high.
Description
Technical field
This application involves technical field of air conditioner, more particularly to a kind of air conditioner control circuit and its electric discharge electricity
Road.
Background technique
Air conditioner is a kind of by the way that air themperature, humidity and air velocity etc. are adjusted, and is provided comfortably for people
The equipment of living environment, is used widely in people's daily life.It is main to use electricity in traditional controller of air conditioner
Capacitor is solved to stablize the busbar voltage of air conditioner control circuit, so that stable electricity can be provided for inverter module at work
Pressure.
However, in practical work process, after power-off, the bus capacitor (i.e. electrolytic capacitor) of air conditioner control circuit is still
It is stored with a large amount of electric energy, takes a long time just be consumed, has seriously affected the replacement efficiency of controller of air conditioner；If
Controller of air conditioner is directly replaced, then is easy to cause Danger Electric shock risk.Therefore, traditional air conditioner has poor safety performance and more
The shortcomings that changing low efficiency.
Summary of the invention
Based on this, it is necessary to for the low problem of traditional air conditioner control circuit security performance, provide a kind of air conditioner
Control circuit and its discharge circuit.
A kind of discharge circuit of air conditioner control circuit, comprising: first switch tube, second switch, the first relay,
Two relays and discharge assembly, the first switch tube connect one end of the coil of first relay, first relay
One end of the normally closed switch of device connects the energy storage device of the air conditioner control circuit, the normally closed switch of first relay
The other end connects the discharge assembly, and one end of the normally closed switch of second relay connects the energy storage device, and described the
The other end of the normally closed switch of two relays connects the discharge assembly, and the second switch connects second relay
One end of coil, the other end of the coil of first relay and the other end of the coil of second relay are separately connected
Power supply, normally closed switch of the first switch tube for control signal to control the first relay based on the received are opened or closed；
Normally closed switch of the second switch for control signal to control the second relay based on the received is opened or closed；It is described to put
Electrical component is used for when the normally closed switch of the normally closed switch of first relay and second relay is closed, to described
Energy storage device electric discharge.
In one embodiment, the first switch tube and the second switch are Metal-oxide-semicondutor
Pipe.
In one embodiment, the first switch tube and the second switch are transistor.
In one embodiment, the transistor is negative-positive-negative transistor, and the base stage of the first switch tube is used
Signal is controlled in receiving, the collector of the first switch tube connects the coil of first relay, the first switch tube
Emitter ground connection, the base stage of the second switch is for receiving control signal, the collector connection of the second switch
The coil of second relay, the emitter ground connection of the second switch.
In one embodiment, the discharge assembly includes discharge resistance, and the discharge resistance connects first relay
The normally closed switch of device, the discharge resistance connect the normally closed switch of second relay.
In one embodiment, the discharge assembly further includes light emitting diode, and the discharge resistance is shone by described
Diode connects the normally closed switch of second relay.
In one embodiment, the resistance value of the discharge resistance are as follows:RgIndicate the discharge resistance
Resistance value, VccFor the voltage at the energy storage device both ends, VOLFor the tube voltage drop of the light emitting diode, IOLPEAKIt is described luminous two
The carrying current value of pole pipe.
A kind of air conditioner control circuit, comprising: energy storage device, rectifier circuit and above-mentioned discharge circuit, described first
One end of the normal open switch of one end of the normal open switch of relay and second relay is all connected with the rectifier circuit
The other end of the normal open switch of first exchange end, the other end of the normal open switch of first relay and second relay
It is used to the firewire of connection air conditioner unit, the second exchange end of the rectifier circuit is for connecting the zero of air conditioner unit
Line, the first DC terminal of the rectifier circuit connect one end of the energy storage device, the second direct current of the rectifier circuit
End connects the other end of the energy storage device.
In one embodiment, air conditioner control circuit further includes current-limiting resistance, the normal open switch of first relay
The firewire of air conditioner unit is connected by the current-limiting resistance.
In one embodiment, the energy storage device is bus capacitor.
Above-mentioned air conditioner control circuit and its discharge circuit are provided at the both ends of the energy storage device of air conditioner control circuit
The discharge circuit being made of first switch tube, second switch, the first relay, the second relay and discharge assembly, when first
Switching tube and second switch control the normally closed switch and the second relay that signal makes the first relay respectively based on the received
Normally closed switch closure when, form a closed circuit between discharge assembly, the first relay, the second relay and energy storage device,
The power consumption that discharge assembly will quickly can be stored in energy storage device.Pass through above-mentioned air conditioner control circuit and its electric discharge electricity
The repid discharge on road operates, and effectively increases the replacement efficiency of controller of air conditioner, while also having the advantages that security performance is high.
Detailed description of the invention
Fig. 1 is the discharge circuit structural schematic diagram of air conditioner control circuit in an embodiment；
Fig. 2 is the discharge circuit structural schematic diagram of air conditioner control circuit in another embodiment；
Fig. 3 is air conditioner control circuit structural representation in an embodiment；
Fig. 4 is air conditioner control circuit structural representation in another embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more saturating
It is thorough comprehensive.
Referring to Fig. 1, a kind of discharge circuit of air conditioner control circuit, comprising: first switch tube Q1, second switch
Q2, the first relay K1, the second relay K2 and discharge assembly R, the coil of first switch tube Q1 the first relay of connection K1
One end, one end of the normally closed switch of the first relay K1 connect energy storage device C1, the normally closed switch of the first relay K1 it is another
The discharge assembly R of end connection air conditioner control circuit, one end of the normally closed switch of the second relay K2 connect energy storage device C1, the
The other end of the normally closed switch of two relay K2 connects discharge assembly R, the coil of second switch Q2 the second relay of connection K2
One end, the other end of the coil of the other end of the coil of the first relay K1 and the second relay K2 is separately connected power supply,
Normally closed switch of the one switching tube Q1 for control signal RLY1 to control the first relay K1 based on the received is opened or closed；Second
Normally closed switch of the switching tube Q2 for control signal RLY2 to control the second relay K2 based on the received is opened or closed；Electric discharge group
Part R is used for when the normally closed switch of the normally closed switch of the first relay K1 and the second relay K2 is closed, to energy storage device C1
Electric discharge.
Specifically, switching tube is the difference according to input signal, and first device of on and off two states may be implemented
Part, common switching tube has transistor and MOS, and (Metal Oxide Semiconductor, metal-oxide-are partly led
Body) pipe etc..Relay is a kind of electric control device, is when the variation of input quantity (energizing quantity) reaches prescribed requirement, electrical
Make controlled volume that a kind of electric appliance of scheduled Spline smoothing occur in output circuit, is to go the one of control high current running with low current
The effects of kind is automatically switched, and plays automatic adjustment, safeguard protection, conversion circuit in circuit.Discharge assembly R is to lead in circuit
In the case where logical, a kind of circuit device of power supply can be rapidly depleted, can be the circuit loads such as resistance, as long as can be connected
In the case of the energy consumption that will be stored in energy storage device C1.Relay switch includes normal open switch and normally closed switch, often
Switch as in the cold situation of coil of relay, is in an off state, and the energy when the coil of relay is powered
The switch that can be closed；Normally closed switch then just on the contrary, when in the cold situation of coil of relay, is in closed state,
And it can then enter off-state when the coil of relay is powered.One end of the coil of first relay K1 connects first switch tube
Q1, the other end of the coil of the first relay K1 connects power supply, and first switch tube Q1 ground connection is arranged, when first switch tube Q1 exists
When being connected under the action of received signal, the coil of the first relay K1 is connected, and the first the normally closed of relay K1 can be made to open
Shutdown is opened, the normal open switch closure of the first relay K1.Likewise, second switch ground connection setting, the line of the second relay K2
One end of circle connects second switch Q2, and the other end of the coil of the second relay K2 connects power supply, when second switch Q2 exists
When being connected under the action of received signal, the coil of the second relay K2 is connected, and the second the normally closed of relay K2 can be made to open
Shutdown is opened, the normal open switch closure of the second relay K2, to realize different circuit control functions.As first switch tube Q1 and
When two switching tube Q2 are in off state under the action of received signal, the coil and the second relay of the first relay K1
The coil of K2 will not be powered, and the normally closed switch of first switch tube Q1 and the normally closed switch of second switch Q2 are in closure simultaneously
State, the first relay K1, the second relay K2, discharge assembly R and energy storage device C1 form a closed circuit, if storing up at this time
Electric energy can be stored in device C1, it will be discharged component R consumption, i.e. realization discharging function.
It should be pointed out that the type of first switch tube Q1 and second switch Q2 are not unique, as long as can be
Make first switch tube Q1 and second switch Q2 be in off state simultaneously under the action of corresponding signal, guarantees the first relay
Normally closed switch closure, the normally closed switch closure of the second relay K2 of device K1, to realize that discharge assembly R puts energy storage device C1
It is electrically operated.In one embodiment, first switch tube Q1 and second switch Q2 is Metal-oxide-semicondutor
(MOS) it manages.Specifically, in the present embodiment, first switch tube Q1 and second switch Q2 are all made of metal-oxide-semiconductor, when the grid of metal-oxide-semiconductor
When pole receives high level or low level signal, can metal-oxide-semiconductor be switched on or off, realize switching function.It is opened with first
Close pipe Q1 be NMOS tube for, when NMOS tube grid input signal be high level signal when, NMOS transistor conduction, so that first
The coil of relay K1 is powered, and the normally closed switch of the first relay K1 will be opened, and the normal open switch of the first relay K1 will
Closure, PMOS tube is then conducting when low level, is realized and the consistent switching function of NMOS tube.In the present embodiment,
One switching tube Q1 and second switch Q2 is NMOS tube, i.e., when first switch tube Q1 and second switch Q2 received signal are equal
When for low level signal, the normally closed switch of the normally closed switch of the first relay K1 and the second relay K2 can be in closing shape
State, discharge assembly R realize the discharge operation to energy storage device C1.It is appreciated that in other embodiments, can also be that first opens
Closing pipe Q1 and second switch Q2 is PMOS tube, equally be can be realized in the case where PMOS tube receives high level signal, the
The normally closed switch of one relay K1 and the normally closed switch of the second relay K2 can be in close state, discharge assembly R realization pair
The discharge operation of energy storage device C1.
It is appreciated that in one embodiment, first switch tube Q1 and second switch Q2 can also be that model is inconsistent
Metal-oxide-semiconductor, for example, first switch tube Q1 be NMOS tube, second switch Q2 is PMOS tube or first switch tube Q1 is PMOS
Pipe, second switch Q2 are NMOS tube.When first switch tube Q1 is NMOS tube, and second switch Q2 is PMOS tube, first is opened
Close pipe Q1 in low level be in off state, second switch Q2 in high level be in off state, corresponding first after
The normally closed switch of the normally closed switch of electric appliance K1 and the second relay K2 can be in closed state, to realize R pairs of discharge assembly
The discharge operation of energy storage device C1.When first switch tube Q1 is PMOS tube, second switch Q2 is NMOS tube, first switch tube Q1
Off state is in high level, second switch Q2 is in off state, corresponding first relay K1 in low level
Normally closed switch and the second relay K2 normally closed switch can be in closed state, to realize discharge assembly R to accumulator
The discharge operation of part C1.
Further, referring to Fig. 2, in one embodiment, first switch tube Q1 and second switch Q2 are crystal
Triode.Specifically, transistor is also referred to as transistor or bipolar junction transistor, and transistor is by one piece
Semiconductor-based on piece makes the PN junction of two close proximities, and bulk semiconductor is divided into three parts by two PN junctions, and middle section is
Base area, two side portions are emitter region and collecting zone, and arrangement mode has PNP and two kinds of NPN.Using transistor as switch
Pipe, when transistor received signal meets corresponding threshold signal, can equally be such that the first the normally closed of relay K1 opens
It closes and the normally closed switch of the second relay K2 is in closed state simultaneously, in order to which discharge assembly R is realized to energy storage device C1's
Discharge operation.
Further, in one embodiment, referring to Fig. 2, transistor be negative-positive-negative transistor, first
The base stage of switching tube Q1 connects the line of the first relay K1 for receiving the collector of control signal RLY1, first switch tube Q1
Circle, the emitter ground connection of first switch tube Q1, the base stage of second switch Q2 is for receiving control signal RLY2, second switch
The collector of Q2 connects the coil of the second relay K2, the emitter ground connection of second switch Q2.
Specifically, in the present embodiment, first switch tube Q1 and second switch Q2 is negative-positive-negative transistor, this
When the equal input low level signal of the base stage of first switch tube Q1 and second switch Q2, first switch tube Q1 and second switch
Pipe Q2 can be in off state, and the first relay K1, the second relay K2, discharge assembly R and energy storage device C1 form one
Closed circuit, if being stored with electric energy in energy storage device C1 at this time, it will be discharged component R consumption, i.e. realization discharging function.It can be with
Understand, in other embodiments, can also be first switch tube Q1 and second switch Q2 is positive-negative-positive transistor, when
When the equal input high level signal of the base stage of first switch tube Q1 and second switch Q2, first switch tube Q1 and second switch Q2
It can be in off state, the first relay K1, the second relay K2, discharge assembly R and energy storage device C1 form a closure
Circuit, if being stored with electric energy in energy storage device C1 at this time, it will be discharged component R consumption, i.e. realization discharging function.In other realities
It applies in example, is that metal-oxide-semiconductor is similar with above-mentioned first switch tube Q1 and second switch Q2, first switch tube Q1 and second switch
Q2 can also be the different transistor of two kinds of models, equally can be realized corresponding control of discharge operation, no longer superfluous herein
It states.It should be pointed out that in other embodiments, can also be that MOS is respectively adopted in first switch tube Q1 and second switch Q2
Pipe and transistor realize corresponding switch control functions, as long as can make the under the action of corresponding control signal
One switching tube Q1 and second switch Q2 is in off state, while the normally closed switch closure of the first relay K1 second after
The normally closed switch of electric appliance K2 is also closed.
In one embodiment, referring to Fig. 2, discharge assembly R includes discharge resistance R1, discharge resistance R1 connection first after
The normally closed switch of electric appliance K1, the normally closed switch of discharge resistance R1 the second relay of connection K2.
Specifically, in the present embodiment, the electric energy that energy storage device C1 is stored is consumed using discharge resistance R1, it is only necessary to
Discharge resistance R1 is accessed in the circuit that corresponding first relay K1, the second relay K2 and energy storage device C1 are constituted, works as electricity
The operation of the repid discharge to energy storage device C1 can be realized in road in the closure state, with easy to operate and easy to accomplish excellent
Point.It is appreciated that in other embodiments, the electric energy of energy storage device C1 storage can also be consumed, using other devices with reality
Existing discharge operation, for example, bulb power consuming device.
It in one embodiment, further include light emitting diode D1 please continue to refer to Fig. 2, discharge assembly R, discharge resistance R1 is logical
Cross the normally closed switch of light emitting diode D1 the second relay of connection K2.
Specifically, in the present embodiment, it is realized using discharge resistance R1 and light emitting diode D1 and energy storage device C1 is deposited
The consumption of the electric energy of storage, while light emitting diode D1 can also be used as discharge indicating lamp.When the normally closed switch of the first relay K1
Closed state, the first relay K1, the second relay K2, discharge assembly R can be in the normally closed switch of the second relay K2
A closed circuit, while discharge resistance R1 is to energy storage device C1 repid discharge, light emitting diode are formed with energy storage device C1
D1 also can be to certain electric energy of consumption energy storage device C1 storage.And in the case where being stored with electric energy in energy storage device C1, hair
Optical diode D1 can be always maintained at luminance, when the electric energy stored in energy storage device C1 is discharged resistance R1 and light emitting diode
After D1 runs out of, light emitting diode D1 can also extinguish simultaneously.It should be pointed out that in the present embodiment, discharge resistance R1 is also
There is protective effect to light emitting diode D1.Energy storage device can be directly judged by the status user of light emitting diode D1
Whether it is also stored with electric energy on C1, there is very strong operation ease.It should be pointed out that the anode connection of light emitting diode D1
The cathode of discharge resistance R1, light emitting diode D1 connects the second relay K2, in order to discharge assembly R to energy storage device C1 into
Normal luminous is able to carry out when row electric discharge.
In one embodiment, the resistance value of discharge resistance R1 are as follows:RgIndicate the resistance of discharge resistance R1
Value, VccFor the voltage at energy storage device both ends, VOLFor the tube voltage drop of light emitting diode D1, IOLPEAKFor the limit of light emitting diode D1
Current value.I.e. in the present embodiment, the resistance value of discharge resistance R1 is not less than the carrying current protection value of light emitting diode D1, electric discharge
The resistance value of resistance R1 is greater than or equal toThe resistance value minimum of discharge resistance R1 can be taken as
Above-mentioned discharge circuit, the both ends of the energy storage device C1 of air conditioner control circuit be provided with by first switch tube Q1,
The circuit of second switch Q2, the first relay K1, the second relay K2 and discharge assembly R composition, as first switch tube Q1 and
Second switch Q2 controls the normally closed switch and the second relay K2 that signal makes the first relay K1 respectively based on the received
One is formed when normally closed switch is closed, between discharge assembly R, the first relay K1, the second relay K2 and energy storage device to be closed back
Road, the power consumption that discharge assembly R will quickly can be stored in energy storage device C1.Pass through putting for above-mentioned air conditioner control circuit
The repid discharge of circuit operates, and effectively increases the replacement efficiency of controller of air conditioner, while also having security performance high
Advantage.
A kind of air conditioner control circuit, referring to Fig. 3, including: energy storage device C1, rectifier circuit D2 and above-mentioned electric discharge
One end of the normal open switch of circuit, one end of the normal open switch of the first relay K1 and the second relay K2 is all connected with rectifier bridge electricity
The first exchange end of road D2, the other end of the normal open switch of the first relay K1 are another with the normal open switch of the second relay K2
End is used to the firewire L of connection air conditioner unit, and the second exchange end of rectifier circuit D2 is for connecting the zero of air conditioner unit
One end of the first DC terminal connection energy storage device C1 of line N, rectifier circuit D2, the second DC terminal connection of rectifier circuit D2
The other end of energy storage device C1.
Specifically, as shown in figure 3, in the first relay K1 1,2 i.e. indicate the first relay K1 normal open switch, 3,4
Indicate the first relay K1 normally closed switch, 1,2 in the second relay K2 i.e. normal open switch of the second relay K2 of expression, 3,
4 indicate the second relay K2 normally closed switch.Rectifier circuit D2 is the circuit for AC energy being converted to direct current energy, rectification
The first exchange end of bridge circuit D2 connects the firewire L of air conditioner unit by the normal open switch of the first relay K1, and rectifier bridge
The second exchange end the zero curve N of air conditioner unit is connected to by the normal open switch of the second relay K2, pass through rectifier circuit
D2 converts alternating current to direct current, is then transmitted to energy storage device C1 by the DC output end of rectifier circuit D2 and is deposited
Storage.When first switch tube Q1 and second switch Q2 are in off state under the influence of control signals, discharge assembly R,
A closed circuit is formed between first relay K1, the second relay K2 and energy storage device, discharge assembly R can be quickly by energy storage
The power consumption stored in device C1 efficiently avoids electrocution conditions when needing replacing corresponding air-conditioner controller
Occur, has the advantages that security performance is high compared with traditional air conditioner control circuit.
One end of the coil of first relay K1 connects first switch tube Q1, and the other end of the coil of the first relay K1 connects
Power supply is connect, and first switch tube Q1 ground connection is arranged, when first switch tube Q1 is connected under the action of received signal, first
The coil of relay K1 is connected, and the normally closed switch of the first relay K1 can be made to disconnect, the normal open switch of the first relay K1 closes
It closes.Likewise, second switch setting ground connection, one end of the coil of the second relay K2 connects second switch Q2, second after
The other end of the coil of electric appliance K2 connects power supply, when second switch Q2 is connected under the action of received signal, second
The coil of relay K2 is connected, and the normally closed switch of the second relay K2 can be made to disconnect, the normal open switch of the second relay K2 closes
It closes, to realize different circuit control functions.When first switch tube Q1 and second switch Q2 are in the effect of received signal
When being in off state down, the coil of the first relay K1 and the coil of the second relay K2 will not be powered, first switch tube
The normally closed switch of Q1 and the normally closed switch of second switch Q2 are in closed state, the first relay K1, the second relay simultaneously
K2, discharge assembly R and energy storage device C1 form a closed circuit, if being stored with electric energy in energy storage device C1 at this time, it will quilt
Discharge assembly R consumption, i.e. realization discharging function.
In one embodiment, energy storage device C1 is bus capacitor.Specifically, in field of air conditioner control, driving control
Mainboard processed often uses electrolytic capacitor to stablize busbar voltage, in order to provide stable busbar voltage for inverter module, the electricity
Solving capacitor is bus capacitor.After drive control mainboard normal power down, first switch tube is controlled respectively by controlling signal
The normally closed switch of Q1 and second switch Q2 cut-off, the normally closed switch of the first relay K1 and the second relay K2 are in closure
State is realized the repid discharge to bus capacitor by discharge assembly R, is avoided when needing to carry out the replacement of drive control mainboard
It gets an electric shock, safety with higher.
In one embodiment, please continue to refer to Fig. 3, air conditioner control circuit further includes current-limiting resistance R2, the first relay
The other end of the normal open switch of device K1 passes through the firewire L of current-limiting resistance R2 connection air conditioner unit.
Specifically, it between the normal open switch of the first relay K1 and the firewire L of air conditioner, is additionally provided with current-limiting resistance
R2, for playing the role of soft start when air conditioner unit is powered on, avoiding the occurrence of leads to device because starting overtension
The case where part is burnt.Referring to Fig. 3, the received control signal RLY1 of first switch tube Q1 makes when unit is powered on
First switch tube Q1 conducting is obtained, the coil of the first relay K1 is powered, the normal open switch closure of the first relay K1, normally closed switch
It disconnects, unit starts to carry out soft start, at this time corresponding discharge circuit loop feature (i.e. the first relay K1, the second relay
The circuit of K2, discharge assembly R and energy storage device C1 composition) it is in open-circuit condition.Simultaneously, it is contemplated that resistance loss etc. is asked when starting
Topic, unit is normally carried out after soft start, referring to Fig. 4, the received control signal RLY2 of second switch Q2 makes second to open
Pipe Q2 conducting, the coil motion of the second relay K2 are closed, so that the normal open switch of the second relay K2 is closed, normally closed switch is disconnected
It opens, then further by controlling signal first switch tube Q1 to be ended, the first relay K1 restores, i.e. the first relay
The normal open switch of K1 disconnects, and normally closed switch closure, unit is worked normally, likewise, discharge circuit loop feature is still at this time
It is in an off state.
Referring to Fig. 2, bus capacitor is able to maintain that busbar voltage when the power-off of air conditioner unit, pass through control letter at this time
Number control first switch tube Q1 and second switch Q2 is in off state, so that the normally closed switch of the first relay K1 and the
The normally closed switch of two relay K2 is closed, and the normal open switch of the normal open switch of the first relay K1 and the second relay K2 are disconnected
It opens, at this time corresponding discharge circuit loop feature closure, i.e. discharge assembly R, the first relay K1, the second relay K2 and energy storage
A closed circuit, the power consumption that discharge assembly R will quickly can be stored in energy storage device C1 are formed between device.By upper
The repid discharge operation for stating air conditioner control circuit, effectively increases the replacement efficiency of controller of air conditioner, while also having peace
The high advantage of full performance.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of discharge circuit of air conditioner control circuit characterized by comprising first switch tube, second switch, first
Relay, the second relay and discharge assembly, the first switch tube connects one end of the coil of first relay, described
One end of the normally closed switch of first relay connects the energy storage device of the air conditioner control circuit, first relay it is normal
The other end that make and break is closed connects the discharge assembly, and one end of the normally closed switch of second relay connects the accumulator
Part, the other end of the normally closed switch of second relay connect the discharge assembly, the second switch connection described the
One end of the coil of two relays, the other end of the coil of first relay are another with the coil of second relay
End is separately connected power supply,
Normally closed switch of the first switch tube for control signal to control the first relay based on the received is opened or closed；Institute
Normally closed switch of the second switch for control signal to control the second relay based on the received is stated to be opened or closed；The electric discharge
Component is used for when the normally closed switch of the normally closed switch of first relay and second relay is closed, to the storage
It can device electric discharge.
2. discharge circuit according to claim 1, which is characterized in that the first switch tube and the second switch are equal
For Metal-oxide-semicondutor pipe.
3. discharge circuit according to claim 1, which is characterized in that the first switch tube and the second switch are equal
For transistor.
4. discharge circuit according to claim 3, which is characterized in that the transistor is negative-positive-negative transistor,
The base stage of the first switch tube connects first relay for receiving control signal, the collector of the first switch tube
Coil, the emitter ground connection of the first switch tube, the base stage of the second switch is for receiving control signal, described the
The collector of two switching tubes connects the coil of second relay, the emitter ground connection of the second switch.
5. discharge circuit according to claim 1, which is characterized in that the discharge assembly includes discharge resistance, described to put
Resistance connects the normally closed switch of first relay, and the discharge resistance connects the normally closed switch of second relay.
6. discharge circuit according to claim 5, which is characterized in that the discharge assembly further includes light emitting diode, institute
State the normally closed switch that discharge resistance connects second relay by the light emitting diode.
7. discharge circuit according to claim 6, which is characterized in that the resistance value of the discharge resistance are as follows:
RgIndicate the resistance value of the discharge resistance, VccFor the voltage at the energy storage device both ends, VOLFor the light emitting diode
Tube voltage drop, IOLPEAKFor the carrying current value of the light emitting diode.
8. a kind of air conditioner control circuit characterized by comprising energy storage device, rectifier circuit and claim 1-8 are any
The one of the normal open switch of discharge circuit described in, one end of the normal open switch of first relay and second relay
End is all connected with the first exchange end of the rectifier circuit, the other end of the normal open switch of first relay and described second
The other end of the normal open switch of relay is used to the firewire of connection air conditioner unit, the second exchange end of the rectifier circuit
For connecting the zero curve of air conditioner unit, the first DC terminal of the rectifier circuit connects one end of the energy storage device, institute
The second DC terminal for stating rectifier circuit connects the other end of the energy storage device.
9. air conditioner control circuit according to claim 8, which is characterized in that further include current-limiting resistance, described first after
The normal open switch of electric appliance connects the firewire of air conditioner unit by the current-limiting resistance.
10. air conditioner control circuit according to claim 8, which is characterized in that the energy storage device is bus capacitor.
Priority Applications (1)
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| CN201910166454.9A CN109869879A (en) | 2019-03-06 | 2019-03-06 | Air conditioner control circuit and its discharge circuit |
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| CN201910166454.9A CN109869879A (en) | 2019-03-06 | 2019-03-06 | Air conditioner control circuit and its discharge circuit |
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Application publication date: 20190611 |