CN106787666A - High voltage power supply and its cut-off method and device, household electrical appliance - Google Patents
High voltage power supply and its cut-off method and device, household electrical appliance Download PDFInfo
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- CN106787666A CN106787666A CN201611254645.3A CN201611254645A CN106787666A CN 106787666 A CN106787666 A CN 106787666A CN 201611254645 A CN201611254645 A CN 201611254645A CN 106787666 A CN106787666 A CN 106787666A
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- high voltage
- power supply
- voltage power
- mode
- shut
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
Abstract
The invention discloses a kind of high voltage power supply and its cut-off method and device, household electrical appliance, the high voltage power supply includes the rectification module, pulsation high voltage output module and the voltage doubling rectifier module that are sequentially connected, wherein, when high voltage power supply works, by the control signal of the default dutycycle of output to high voltage output module of pulsing, corresponding high voltage direct current is obtained with the output end of voltage doubling rectifier module, be the described method comprises the following steps：When the cut-off signals of high voltage power supply are received, the shut-off mode of high voltage power supply is obtained；Shut-off mode according to high voltage power supply is adjusted to default dutycycle；Pulsation high voltage output module is controlled according to the dutycycle after regulation, shut-off control is carried out with to high voltage power supply.So as to be adjusted to the dutycycle of control signal by the shut-off mode according to high voltage power supply, it is ensured that during high voltage power supply is turned off, the component in circuit will not be damaged, so as to improve the reliability and service life of power supply.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of cut-off method of high voltage power supply, a kind of high-tension electricity
The cutoff device in source, a kind of high voltage power supply and a kind of household electrical appliance.
Background technology
High voltage power supply also known as high pressure generator, generally refer to power supply of the output voltage more than five kilovolts, and its application is more
Extensively, for example, can be applicable to medical domain (such as X-ray machine, spectrum analysis, nondestructive inspection), manufacture field (such as grain in semiconductor
Sub injection, nano-photoetching etc.), sphere of life (such as no material consumption air purifier of the plasma cleaning technology of use).
The technology development of high voltage power supply mainly has both direction：One is to improve power, i.e. high voltage, high current；Two
It is to reduce power volume, i.e. high voltage, switching frequency high.But either which direction, its internal component will all bear very high
Voltage or electric current, especially during power remove, it is easy to so that component be subject to greater impact, cause component to make
Even it is damaged with service life reduction.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the invention is to propose a kind of cut-off method of high voltage power supply, by according to high-tension electricity
The shut-off mode in source is adjusted to the dutycycle of control signal, it is ensured that during high voltage power supply is turned off, the first device in circuit
Part will not be damaged, so as to improve the reliability and service life of power supply.
Second object of the present invention is to propose a kind of cutoff device of high voltage power supply.
Third object of the present invention is to propose a kind of high voltage power supply.
Fourth object of the present invention is to propose a kind of household electrical appliance.
To achieve the above object, a kind of cut-off method of high voltage power supply that one aspect of the present invention embodiment is proposed, the height
Voltage source includes the rectification module, pulsation high voltage output module and the voltage doubling rectifier module that are sequentially connected, wherein, in the high-tension electricity
When source works, by the control signal of the default dutycycle of output to the pulsation high voltage output module, with the voltage multiplying rectifier
The output end of module obtains corresponding high voltage direct current, the described method comprises the following steps：Receiving the shut-off of high voltage power supply
During signal, the shut-off mode of the high voltage power supply is obtained；Shut-off mode according to the high voltage power supply is to the default dutycycle
It is adjusted；The pulsation high voltage output module is controlled according to the dutycycle after regulation, is entered with to the high voltage power supply
Row shut-off control.
The cut-off method of high voltage power supply according to embodiments of the present invention, when the cut-off signals of high voltage power supply are received, obtains
The shut-off mode of high voltage power supply is taken, and default dutycycle is adjusted according to the shut-off mode of high voltage power supply, then according to tune
Dutycycle after section is controlled to pulsation high voltage output module, and shut-off control is carried out with to high voltage power supply.So as to pass through basis
The shut-off mode of high voltage power supply is adjusted to the dutycycle of control signal, it is ensured that during high voltage power supply is turned off, in circuit
Component will not be damaged, so as to improve the reliability and service life of power supply.
According to one embodiment of present invention, the shut-off mode of the high voltage power supply includes normal turn-off mode and abnormal pass
Disconnected mode, wherein, when the shut-off mode of the high voltage power supply is the normal turn-off mode, every the first Preset Time by institute
State default dutycycle and turn the first preset value down, until the default dutycycle is zero；When the shut-off mode of the high voltage power supply is
During the abnormal shutdown mode, directly the default dutycycle is turned down to zero.
According to one embodiment of present invention, first Preset Time is fixed or adjustable Preset Time, described the
One preset value is fixed or adjustable preset value.
According to one embodiment of present invention, the pulsation high voltage output module includes：Transformer and switching tube, the change
After the primary coil of depressor is connected with the switching tube, it is connected in parallel between the output end of the rectification module, the transformer
Secondary coil is corresponding with the input of the voltage doubling rectifier module to be connected.
To achieve the above object, a kind of cutoff device of high voltage power supply that another aspect of the present invention embodiment is proposed, described
High voltage power supply includes the rectification module, pulsation high voltage output module and the voltage doubling rectifier module that are sequentially connected, wherein, in the high pressure
During power work, by the control signal of the default dutycycle of output to the pulsation high voltage output module, with described times of repoussage
The output end of flow module obtains corresponding high voltage direct current, and described device includes：Acquiring unit, for receiving high voltage power supply
Cut-off signals when, obtain the shut-off mode of the high voltage power supply；Adjustment unit, the adjustment unit and the acquiring unit phase
Even, the adjustment unit is used to be adjusted the default dutycycle according to the shut-off mode of the high voltage power supply；Control is single
Unit, described control unit is connected with the adjustment unit, and described control unit is used for according to the dutycycle after regulation to the arteries and veins
Dynamic high voltage output module is controlled, and shut-off control is carried out with to the high voltage power supply.
The cutoff device of high voltage power supply according to embodiments of the present invention, when the cut-off signals of high voltage power supply are received, leads to
The shut-off mode that acquiring unit obtains high voltage power supply is crossed, adjustment unit is entered according to the shut-off mode of high voltage power supply to default dutycycle
Row regulation, control unit is controlled according to the dutycycle after regulation to pulsation high voltage output module, is carried out with to high voltage power supply
Shut-off control.So as to be adjusted to the dutycycle of control signal by the shut-off mode according to high voltage power supply, it is ensured that high-tension electricity
During source turns off, the component in circuit will not be damaged, so as to improve the reliability and service life of power supply.
According to one embodiment of present invention, the shut-off mode of the high voltage power supply includes normal turn-off mode and abnormal pass
Disconnected mode, wherein, when the shut-off mode of the high voltage power supply is the normal turn-off mode, the adjustment unit is every first
Preset Time turns the default dutycycle down first preset value, until the default dutycycle is zero；When the high voltage power supply
Shut-off mode be the abnormal shutdown mode when, the adjustment unit is directly turned to zero the default dutycycle down.
According to one embodiment of present invention, first Preset Time is fixed or adjustable Preset Time, described the
One preset value is fixed or adjustable preset value.
According to one embodiment of present invention, the pulsation high voltage output module includes：Transformer and switching tube, the change
After the primary coil of depressor is connected with the switching tube, it is connected in parallel between the output end of the rectification module, the transformer
Secondary coil is corresponding with the input of the voltage doubling rectifier module to be connected.
To achieve the above object, another aspect of the invention embodiment proposes a kind of high voltage power supply, and it includes above-mentioned height
The cutoff device of voltage source.
High voltage power supply according to embodiments of the present invention, by the cutoff device of above-mentioned high voltage power supply, can be according to high pressure
The shut-off mode of power supply is adjusted to the dutycycle of control signal, it is ensured that during high voltage power supply is turned off, the unit in circuit
Device will not be damaged, so as to improve the reliability and service life of power supply.
Additionally, the embodiment of the present invention also proposed a kind of household electrical appliance, it includes above-mentioned high voltage power supply.
The household electrical appliance of the embodiment of the present invention, by above-mentioned high voltage power supply, can be according to the shut-off mode of high voltage power supply
Dutycycle to control signal is adjusted, it is ensured that during high voltage power supply is turned off, the component in circuit will not be damaged
It is bad, so as to improve the reliability and service life of power supply, and then ensure the reliability that household electrical appliance are powered.
Brief description of the drawings
Fig. 1 is the flow chart of the cut-off method of high voltage power supply according to embodiments of the present invention；
Fig. 2 is the structural representation of high voltage power supply according to an embodiment of the invention；
Fig. 3 is the structural representation of high voltage power supply in accordance with another embodiment of the present invention；
Fig. 4 is the schematic diagram of the cut-off method of high voltage power supply according to an embodiment of the invention；
Fig. 5 is the block diagram of the cutoff device of high voltage power supply according to embodiments of the present invention；
Fig. 6 is the block diagram of ion purifier according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Shut-off to describe the cut-off method, high voltage power supply of the high voltage power supply of the embodiment of the present invention with reference to the accompanying drawings is filled
Put, high voltage power supply and household electrical appliance.
Fig. 1 is the flow chart of the cut-off method of high voltage power supply according to embodiments of the present invention.
In an embodiment of the present invention, high voltage power supply may include rectification module, the pulsation high voltage output module being sequentially connected
And voltage doubling rectifier module, wherein, when high voltage power supply works, the control signal by the default dutycycle of output is defeated to high pressure of pulsing
Go out module, corresponding high voltage direct current is obtained with the output end of voltage doubling rectifier module.
Specifically, as shown in Fig. 2 the input of rectification module is connected with electric main, the output end of rectification module with
Pulse high voltage output module input be connected, pulse high voltage output module output end and voltage doubling rectifier module input phase
Even, the output end of voltage doubling rectifier module is connected with load.
When high voltage power supply works on power, the rectified module of electric main is converted into low-voltage DC, High voltage output of pulsing
Module enters line translation to the low-voltage DC, with the high-tension electricity of output ripple to voltage doubling rectifier module, then by voltage multiplying rectifier mould
Block exports high voltage direct current.Wherein, the size of high voltage direct current output voltage, pulsation High voltage output mould mainly with rectification module
The parameter (such as high-low pressure no-load voltage ratio, the dutycycle of the control signal of generation pulsation) of block, the relating to parameters of voltage doubling rectifier module.And work as
After hardware circuit determines, for example, rectification module using Switching Power Supply or can not control rectifying circuit, voltage doubling rectifier module is using half
When ripple rectification and many voltage-multiplying circuits, the dutycycle of the size of high voltage direct current only with the control signal of pulsation high voltage output module has
Close, dutycycle is higher, and the voltage of high voltage direct current is higher.
According to one embodiment of present invention, as shown in figure 3, pulsation high voltage output module may include：Transformer and switch
Pipe, after the primary coil of transformer is connected with switching tube, is connected in parallel between the output end of rectification module, the secondary coil of transformer
It is corresponding with the input of voltage doubling rectifier module to be connected.Wherein, switching tube can be triode, IGBT, metal-oxide-semiconductor etc., and transformer can
Think step-up transformer.
Specifically, as shown in figure 3, when high voltage power supply works on power, the fixed low-voltage DC of rectification module output is extremely
The primary coil of transformer, meanwhile, control chip (such as MCU) output control signal (such as pwm signal) to switching tube, driving switch
Pipe carries out turn-on and turn-off, and so as to produce alternating voltage on the primary coil of transformer, now the secondary coil of transformer will
The high-tension electricity of pulsation is induced, is then changed through voltage doubling rectifier module, to export required high voltage direct current.Wherein, it is high
Press output voltage of the galvanic size mainly with rectification module, the no-load voltage ratio of transformer, the dutycycle of switch controlled signal, times
The relating to parameters of repoussage flow module.And after hardware circuit determination, the size of high voltage direct current only with the control signal of switching tube
Dutycycle it is relevant, dutycycle is higher, and high voltage direct current is bigger.
When being turned off due to high voltage power supply, greater impact may be produced to the power component in circuit, therefore, in high pressure
Certain measure need to be taken during power remove, it is ensured that component will not be damaged.
As shown in figure 1, the cut-off method of the high voltage power supply may include following steps：
S1, when the cut-off signals of high voltage power supply are received, obtains the shut-off mode of high voltage power supply.
S2, the shut-off mode according to high voltage power supply is adjusted to default dutycycle.
S3, is controlled according to the dutycycle after regulation to pulsation high voltage output module, is turned off with to high voltage power supply
Control.
According to one embodiment of present invention, the shut-off mode of high voltage power supply may include normal turn-off mode and abnormal shutdown
Mode, wherein, when the shut-off mode of high voltage power supply is normal turn-off mode, default dutycycle is adjusted every the first Preset Time
Small first preset value, until default dutycycle is zero；When the shut-off mode of high voltage power supply is abnormal shutdown mode, directly will be pre-
If dutycycle is turned down to zero.
Specifically, the shut-off situation of high voltage power supply is broadly divided into two kinds, and one kind is that user passes through remote control or control
Panel etc. shuts down manually, and this belongs to high voltage power supply normal turn-off；Another kind is that load is broken down, and system needs to immediately turn off height
Voltage source, to avoid load from being further damaged, this belongs to abnormal shutdown.It is when off, main when normal turn-off
Consider impact influence of the high voltage power supply shut-off on power component；It is when off, main to consider when abnormal shutdown
Influence to loading.
Therefore, in an embodiment of the present invention, when the cut-off signals of high voltage power supply are received, if high voltage power supply is for just
It is normally-off, then every the first Preset Time, the dutycycle of control signal is turned down first preset value, until the duty of control signal
Than being zero, so that the power component in ensureing circuit improves the reliability and service life of component from impact；If high
Voltage source is abnormal shutdown, then the dutycycle of control signal directly is set into zero, and high-tension electricity is controlled with the most short time
Source turns off, it is ensured that circuit and load will not further be damaged.
In an embodiment of the present invention, the first Preset Time can be fixed or adjustable Preset Time, the first preset value
It can be fixed or adjustable preset value.
Specifically, it is fixed Preset Time with the first Preset Time, the first preset value is to fix as a example by preset value.As schemed
Shown in 4, it is assumed that default dutycycle is D0, the first Preset Time is Δ T, and the first preset value is Δ D, then will be accounted for every Δ T time
Sky than turning Δ D, i.e. D1=D0- Δs D down, D2=D1- Δs D ..., circulate operation, until dutycycle D=0, now switching tube is in
Off state, the output end no-voltage of voltage doubling rectifier module, high voltage power supply shut-off.So as to be entered by the dutycycle to control signal
The mode turned down step by step of row is closed to high voltage power supply, it is ensured that the power component in circuit will not be impacted, raising
The reliability and service life of component.
Alternatively, it is also possible to be adjusted to dutycycle according to fixed Preset Time, adjustable preset value, or according to adjustable pre-
If time, fixed preset value are adjusted to dutycycle, or dutycycle is carried out according to adjustable Preset Time, adjustable preset values
Regulation, specific I will not elaborate.
In sum, the cut-off method of high voltage power supply according to embodiments of the present invention, is receiving the shut-off of high voltage power supply
During signal, the shut-off mode of high voltage power supply is obtained, and default dutycycle is adjusted according to the shut-off mode of high voltage power supply, so
Pulsation high voltage output module is controlled according to the dutycycle after regulation afterwards, shut-off control is carried out with to high voltage power supply.So as to
The dutycycle of control signal is adjusted by the shut-off mode according to high voltage power supply, it is ensured that the process of high voltage power supply shut-off
In, the component in circuit will not be damaged, so as to improve the reliability and service life of power supply.
Fig. 5 is the block diagram of the cutoff device of high voltage power supply according to embodiments of the present invention.
In an embodiment of the present invention, as shown in Fig. 2 high voltage power supply may include rectification module 10, the pulsation being sequentially connected
High voltage output module 20 and voltage doubling rectifier module 30, wherein, when high voltage power supply works, by the control of the default dutycycle of output
Signal obtains corresponding high voltage direct current to high voltage output module 20 of pulsing with the output end of voltage doubling rectifier module 30.
Specifically, as shown in Fig. 2 the input of rectification module 10 is connected with electric main, the output of rectification module 10
Hold and be connected with the input of pulsation high voltage output module 20, output end and the voltage doubling rectifier module 30 of high voltage output module 20 of pulsing
Input be connected, the output end of voltage doubling rectifier module 30 is connected with loading.
When high voltage power supply works on power, the rectified module 10 of electric main is converted into low-voltage DC VDC, high pressure of pulsing
20 couples of low-voltage DC VDC of output module enter line translation, with the high-tension electricity of output ripple to voltage doubling rectifier module 30, Ran Houyou
Voltage doubling rectifier module 30 exports high voltage direct current.Wherein, the output voltage main with rectification module 10 of the size of high voltage direct current,
The parameter (such as high-low pressure no-load voltage ratio, the dutycycle of the control signal of generation pulsation) of high voltage output module 20 of pulsing, voltage multiplying rectifier mould
The relating to parameters of block 30.And after working as hardware circuit determination, for example, rectification module 10 uses Switching Power Supply or uncontrollable rectified current
Road, when voltage doubling rectifier module 30 is using halfwave rectifier and many voltage-multiplying circuits, the size of high voltage direct current only with pulsation High voltage output
The dutycycle of the control signal of module 30 is relevant, and dutycycle is higher, and the voltage of high voltage direct current is higher.
According to one embodiment of present invention, as shown in figure 3, pulsation high voltage output module 20 may include：The He of transformer 21
Switching tube 22, after the primary coil of transformer 21 is connected with switching tube 22, is connected in parallel between the output end of rectification module 10, transformation
The secondary coil of device 21 is corresponding with the input of voltage doubling rectifier module 22 to be connected.Wherein, switching tube 22 can for triode,
IGBT, metal-oxide-semiconductor etc., transformer 21 can be step-up transformer.
Specifically, as shown in figure 3, when high voltage power supply works on power, rectification module 10 exports the low-voltage direct of fixation
Electricity to transformer 21 primary coil, meanwhile, control chip (such as MCU) output control signal (such as pwm signal) to switching tube 22,
Driving switch pipe 22 carries out turn-on and turn-off, so as to producing alternating voltage on the primary coil of transformer 21, now transformer
21 secondary coil will induce the high-tension electricity of pulsation, then be changed through voltage doubling rectifier module 30, to export required height
Pressure direct current.Wherein, the size of high voltage direct current output voltage, the no-load voltage ratio of transformer 21, switch mainly with rectification module 10
The dutycycle of the control signal of pipe 22, the relating to parameters of voltage doubling rectifier module 30.And after hardware circuit determination, high voltage direct current
Dutycycle of the size only with the control signal of switching tube is relevant, and dutycycle is higher, and high voltage direct current is bigger.
When being turned off due to high voltage power supply, greater impact may be produced to the power component in circuit, therefore, in high pressure
Certain measure need to be taken during power remove, it is ensured that component will not be damaged.
As shown in figure 5, the cutoff device of the high voltage power supply may include acquiring unit 100, adjustment unit 200 and control unit
300。
Wherein, acquiring unit 100 is used to be obtained when the cut-off signals of high voltage power supply are received the shut-off side of high voltage power supply
Formula.Adjustment unit 200 is connected with acquiring unit 100, and adjustment unit 200 is used to be accounted for default according to the shut-off mode of high voltage power supply
Empty ratio is adjusted.Control unit 300 is connected with adjustment unit 200, and control unit 300 is used for according to the dutycycle pair after regulation
Pulsation high voltage output module 20 is controlled, and shut-off control is carried out with to high voltage power supply.
According to one embodiment of present invention, the shut-off mode of high voltage power supply may include normal turn-off mode and abnormal shutdown
Mode, wherein, when the shut-off mode of high voltage power supply is normal turn-off mode, adjustment unit 200 will every the first Preset Time
Default dutycycle turns the first preset value down, until default dutycycle is zero；When the shut-off mode of high voltage power supply is abnormal shutdown side
During formula, adjustment unit 200 is directly turned to zero default dutycycle down.
Specifically, the shut-off situation of high voltage power supply is broadly divided into two kinds, and one kind is that user passes through remote control or control
Panel etc. shuts down manually, and this belongs to high voltage power supply normal turn-off；Another kind is that load is broken down, and system needs to immediately turn off height
Voltage source, to avoid load from being further damaged, this belongs to abnormal shutdown.It is when off, main when normal turn-off
Consider impact influence of the high voltage power supply shut-off on power component；It is when off, main to consider when abnormal shutdown
Influence to loading.
Therefore, in an embodiment of the present invention, when the cut-off signals of high voltage power supply are received, if acquiring unit 100
The high voltage power supply of acquisition is normal turn-off, then every the first Preset Time, adjustment unit 200 turns the dutycycle of control signal down
First preset value, until the dutycycle of control signal is zero, so that the power component in ensureing circuit improves unit from impact
The reliability and service life of device；If the high voltage power supply that acquiring unit 100 is obtained is abnormal shutdown, adjustment unit 200
The dutycycle of control signal is directly set to zero, controls high voltage power supply to turn off with the most short time, it is ensured that circuit and negative
Load will not further be damaged.
In an embodiment of the present invention, the first Preset Time can be fixed or adjustable Preset Time, the first preset value
It can be fixed or adjustable preset value.
Specifically, it is fixed Preset Time with the first Preset Time, the first preset value is to fix as a example by preset value.As schemed
Shown in 4, it is assumed that default dutycycle is D0, the first Preset Time is Δ T, and the first preset value is Δ D, then every Δ T time, adjust
Section unit 200 turns dutycycle down Δ D, i.e. D1=D0- Δs D, D2=D1- Δs D ..., circulate operation, until dutycycle D=0,
Now, switching tube 22 is off, the output end no-voltage of voltage doubling rectifier module 30, high voltage power supply shut-off.So as to pass through
The mode that the dutycycle of control signal is turned down step by step is closed to high voltage power supply, it is ensured that the power component in circuit
Will not be impacted, be improve the reliability and service life of component.
Alternatively, it is also possible to be adjusted to dutycycle according to fixed Preset Time, adjustable preset value, or according to adjustable pre-
If time, fixed preset value are adjusted to dutycycle, or dutycycle is carried out according to adjustable Preset Time, adjustable preset values
Regulation, specific I will not elaborate.
The cutoff device of high voltage power supply according to embodiments of the present invention, when the cut-off signals of high voltage power supply are received, leads to
The shut-off mode that acquiring unit obtains high voltage power supply is crossed, adjustment unit is entered according to the shut-off mode of high voltage power supply to default dutycycle
Row regulation, control unit is controlled according to the dutycycle after regulation to pulsation high voltage output module, is carried out with to high voltage power supply
Shut-off control.So as to be adjusted to the dutycycle of control signal by the shut-off mode according to high voltage power supply, it is ensured that high-tension electricity
During source turns off, the component in circuit will not be damaged, so as to improve the reliability and service life of power supply.
In addition, embodiments of the invention also proposed a kind of high voltage power supply, it includes above-mentioned cutoff device.
The high voltage power supply of the embodiment of the present invention, by above-mentioned cutoff device, can be according to the shut-off mode of high voltage power supply
Dutycycle to control signal is adjusted, it is ensured that during high voltage power supply is turned off, the component in circuit will not be damaged
It is bad, so as to improve the reliability and service life of power supply.
Additionally, the embodiment of the present invention also proposed a kind of household electrical appliance, it includes above-mentioned high voltage power supply.
Specifically, household electrical appliance can be that, using the no material consumption air purifier of plasma cleaning technology, abbreviation ion is net
Change device 1000, its operation principle is：Superelevation DC voltage is loaded to ion generator 1002 by high voltage power supply 1001 so that stream
The air ionization crossed in ion generator 1002, the impurity in air is powered, then the collecting plate adsorbing contaminant for passing through opposite voltage,
So as to clean air.
When user closes ion purifier 1000 by remote control, high voltage power supply 1001 is normal switching-off, now, can be led to
Cross the dutycycle of gradually reduction control signal to control high voltage power supply 1001 to close, to avoid the turn off process of high voltage power supply 1001
In, the power component in circuit is impacted, so as to improve the reliability and service life of component；Adopted when according to power
When collector detects that ion generator 1002 breaks down, the dutycycle of control signal is set into zero immediately to make high pressure
Power supply 1001 is closed rapidly, to avoid the further failure of ion generator.
Household electrical appliance according to embodiments of the present invention, by above-mentioned high voltage power supply, can be according to the shut-off of high voltage power supply
Mode is adjusted to the dutycycle of control signal, it is ensured that during high voltage power supply is turned off, the component in circuit will not be received
To damage, so as to improve the reliability and service life of power supply, and then ensure the reliability that household electrical appliance are powered.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of cut-off method of high voltage power supply, it is characterised in that the high voltage power supply includes the rectification module, the arteries and veins that are sequentially connected
Dynamic high voltage output module and voltage doubling rectifier module, wherein, when the high voltage power supply works, by the control of the default dutycycle of output
Signal processed obtains corresponding HVDC to the pulsation high voltage output module with the output end of the voltage doubling rectifier module
Electricity, the described method comprises the following steps：
When the cut-off signals of high voltage power supply are received, the shut-off mode of the high voltage power supply is obtained；
Shut-off mode according to the high voltage power supply is adjusted to the default dutycycle；
The pulsation high voltage output module is controlled according to the dutycycle after regulation, is turned off with to the high voltage power supply
Control.
2. the cut-off method of high voltage power supply as claimed in claim 1, it is characterised in that the shut-off mode bag of the high voltage power supply
Normal turn-off mode and abnormal shutdown mode are included, wherein,
When the shut-off mode of the high voltage power supply is the normal turn-off mode, described presetting is accounted for every the first Preset Time
Empty ratio turns the first preset value down, until the default dutycycle is zero；
When the high voltage power supply shut-off mode be the abnormal shutdown mode when, directly by the default dutycycle turn down to
Zero.
3. the cut-off method of high voltage power supply as claimed in claim 2, it is characterised in that first Preset Time for fixed or
Person is adjustable Preset Time, first preset value is fixed or adjustable preset value.
4. the cut-off method of the high voltage power supply as any one of claim 1-3, it is characterised in that the pulsation high pressure is defeated
Going out module includes：Transformer and switching tube, after the primary coil of the transformer is connected with the switching tube, are connected in parallel on described whole
Between the output end of flow module, the secondary coil of the transformer is corresponding with the input of the voltage doubling rectifier module to be connected.
5. a kind of cutoff device of high voltage power supply, it is characterised in that the high voltage power supply includes the rectification module, the arteries and veins that are sequentially connected
Dynamic high voltage output module and voltage doubling rectifier module, wherein, when the high voltage power supply works, by the control of the default dutycycle of output
Signal processed obtains corresponding HVDC to the pulsation high voltage output module with the output end of the voltage doubling rectifier module
Electricity, described device includes：
Acquiring unit, for when the cut-off signals of high voltage power supply are received, obtaining the shut-off mode of the high voltage power supply；
Adjustment unit, the adjustment unit is connected with the acquiring unit, and the adjustment unit is used for according to the high voltage power supply
Shut-off mode the default dutycycle is adjusted；
Control unit, described control unit is connected with the adjustment unit, and described control unit is used for according to the duty after regulation
Compare the pulsation high voltage output module to be controlled, shut-off control is carried out with to the high voltage power supply.
6. the cutoff device of high voltage power supply as claimed in claim 5, it is characterised in that the shut-off mode bag of the high voltage power supply
Normal turn-off mode and abnormal shutdown mode are included, wherein,
When the shut-off mode of the high voltage power supply is the normal turn-off mode, the adjustment unit is every the first Preset Time
The default dutycycle is turned down first preset value, until the default dutycycle is zero；
When the shut-off mode of the high voltage power supply is the abnormal shutdown mode, the adjustment unit directly accounts for described presetting
Empty ratio is turned down to zero.
7. the cutoff device of high voltage power supply as claimed in claim 6, it is characterised in that first Preset Time for fixed or
Person is adjustable Preset Time, first preset value is fixed or adjustable preset value.
8. the cutoff device of the high voltage power supply as any one of claim 5-7, it is characterised in that the pulsation high pressure is defeated
Going out module includes：Transformer and switching tube, after the primary coil of the transformer is connected with the switching tube, are connected in parallel on described whole
Between the output end of flow module, the secondary coil of the transformer is corresponding with the input of the voltage doubling rectifier module to be connected.
9. a kind of high voltage power supply, it is characterised in that the shut-off dress including the high voltage power supply as any one of claim 5-8
Put.
10. a kind of household electrical appliance, it is characterised in that including high voltage power supply as claimed in claim 9.
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| CN201611254645.3A CN106787666B (en) | 2016-12-30 | 2016-12-30 | High voltage power supply and its cut-off method and device, household electrical appliance |
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| CN201611254645.3A CN106787666B (en) | 2016-12-30 | 2016-12-30 | High voltage power supply and its cut-off method and device, household electrical appliance |
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| CN106787666B (en) | 2019-07-30 |
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