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CN104617782B - Anti-surging current device, Anti-surging current methods and household electrical appliance - Google Patents

Anti-surging current device, Anti-surging current methods and household electrical appliance Download PDF

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Publication number
CN104617782B
CN104617782B CN201410829699.2A CN201410829699A CN104617782B CN 104617782 B CN104617782 B CN 104617782B CN 201410829699 A CN201410829699 A CN 201410829699A CN 104617782 B CN104617782 B CN 104617782B
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China
Prior art keywords
charging
switch
charging capacitor
signal
capacitor
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CN201410829699.2A
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CN104617782A (en
Inventor
梁汝锦
张能胜
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The invention discloses a kind of Anti-surging current device of household electrical appliance, and it includes charging capacitor, and the positive pole of charging capacitor is connected with positive source;Switch, switch include the first connection end being connected with the negative pole of charging capacitor, the second connection end and control terminal that are connected with power cathode;And the controller being connected with control terminal, controller is used for controlling switch to realize the charge cycle of multiple charging capacitors until the charging voltage of charging capacitor supplies household electrical appliance after reaching predetermined voltage threshold, and each charge cycle includes closure switch and is more than or equal to the turn-off time of the charging interval and subsequent disconnection switch stopping of predetermined current threshold to charging capacitor charging up to flowing through the charging current of charging capacitor to be charged to charging capacitor.The present invention also provides a kind of Anti-surging current methods and household electrical appliance.For the Anti-surging current device of better embodiment of the present invention by controlling switch, charging capacitor produces charging surge current when preventing charging to reach, and prevents overcurrent damage.

Description

Anti-surging current device, Anti-surging current methods and household electrical appliance
Technical field
The present invention relates to household electrical appliance, more particularly, to a kind of Anti-surging current device, Anti-surging current methods and family expenses Electrical equipment.
Background technology
Household electrical appliance easily produce surge current when upper electric, and household electrical appliance and Electrical Safety are constituted a threat to.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention needs offer one Kind Anti-surging current device, Anti-surging current methods and household electrical appliance.
According to the Anti-surging current device of the household electrical appliance of embodiment of the present invention, it is characterised in that including:
Charging capacitor, the positive pole of the charging capacitor are connected with positive source;
Switch, the first connection end that the switch includes being connected with the negative pole of the charging capacitor, it is connected with power cathode Second connection end and control terminal;And
The controller being connected with the control terminal, the controller are used to control the switch to realize multiple chargings The charge cycle of electric capacity is powered after the charging voltage of the charging capacitor reaches predetermined voltage threshold to the household electrical appliance, The charging interval and disconnect the switch stopping that each charge cycle includes closure switch to charge to the charging capacitor To the turn-off time of charging capacitor charging, the controller is used to send connection signal within the charging interval so that institute State switch and first connection end and the second connection end connected to be charged to the charging capacitor according to the connection signal, And cut-off signal is sent so that described open when the charging current for flowing through the charging capacitor is more than or equal to predetermined current threshold Close according to the cut-off signal disconnect first connection end and the second connection end connection enter the turn-off time with Stop charging to the charging capacitor.
In some embodiments, the charging capacitor is electrochemical capacitor or multiple electrochemical capacitors being connected in series.
In some embodiments, the switch for the embedded insulated gate bipolar transistor after stream diode or including Without embedded insulated gate bipolar transistor and diode after stream diode, first connection end is collector, and described second connects It is emitter-base bandgap grading to connect end, and the control terminal is grid.
In some embodiments, the switch is the embedded metal oxide layer semiconductcor field effect crystal after stream diode Pipe is embedded after the metal oxide layer semiconductcor field effect transisto and diode that flow diode including nothing;First connection Hold to drain, the second connection end is source electrode, and the control terminal is grid.
In some embodiments, the charge cycle, the charging interval or turn-off time fixed setting.
In some embodiments, the controller be additionally operable on the household electrical appliance first to send after electricity cut-off signal with Multiple charge cycles are entered back into after disconnecting the switch scheduled time.
In some embodiments, the controller is additionally operable to reach the predetermined voltage threshold hair in the charging voltage Go out to connect signal to connect the charging capacitor and the household electrical appliance, so that charging capacitor electric discharge is the household electrical appliance Power supply.
According to the household electrical appliance of embodiment of the present invention, it includes:
The rectifier being connected with AC power, the output of the rectifier include positive source and power cathode;
SPM;And
Anti-surging current device, including
Charging capacitor, the positive pole of the charging capacitor are connected with told positive source;
Switch, the switch include the first connection end being connected with the negative pole of the charging capacitor and the power cathode The second connection end and control terminal of connection;And
The controller being connected with the control terminal and the SPM, the controller are used to control the switch To realize the charge cycle of multiple charging capacitors after the charging voltage of the charging capacitor reaches predetermined voltage threshold Powered to the SPM, each charge cycle includes charging closure switch to be charged to the charging capacitor Time and the disconnection switch stop the turn-off time to charging capacitor charging, and the controller is used in the charging It is interior to send connection signal so that the switch connects according to the connection signal connection first connection end and described second Hold to be charged to the charging capacitor, and when the charging current for flowing through the charging capacitor is more than or equal to predetermined current threshold Cut-off signal is sent so that the switch disconnects first connection end and the second connection end according to the cut-off signal Connection enters the turn-off time to stop charging to the charging capacitor.
According to the Anti-surging current methods of embodiment of the present invention, it is characterised in that including:
S11:Send connection signal and switched so as to be connected between positive source and power cathode with rushing charging capacitor series connection Closed according to connection signal to be charged to the charging capacitor;
S12:Cut-off signal is sent when the charging current for flowing through the charging capacitor is more than or equal to predetermined current threshold So that the switch is disconnected according to cut-off signal to stop charging to the charging capacitor;And
S13:S11 is returned to if charging voltage is less than predetermined voltage threshold, and if the charging voltage reaches described predetermined Voltage threshold then closes described switch so that charging capacitor electric discharge supplies household electrical appliance.
In some embodiments, the Anti-surging current methods also include before step S11:
S10:Cut-off signal is first sent after electricity on the household electrical appliance to disconnect the switch scheduled time.
The Anti-surging current device of better embodiment of the present invention prevents when institute of charging by controlling the switch, to reach State charging capacitor and produce charging surge current, prevent overcurrent damage, by controlling the charging interval of the switch, to reach control The charging current of the good charging capacitor, prevents the charging current excessive so that the big reduction of charging capacitor service life.
In addition, relative to the device for carrying out Anti-surging electric current using semistor and relay, due to relay Device needs larger electric current to maintain closure, and Anti-surging current device of the invention only needs very small electricity using the switch control Stream, the demand of power supply is greatly reduced, cost is reduced while saving the energy.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the accompanying drawings below to embodiment by change Obtain substantially and be readily appreciated that, wherein:
Fig. 1 is the circuit diagram of the Anti-surging current device of better embodiment of the present invention.
Fig. 2 is the work wave schematic diagram of the Anti-surging current device of better embodiment of the present invention.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not It is interpreted as indicating or implies relative importance or hidden conjunction indicates the quantity of indicated technical characteristic.Thus, define " the The feature of one ", " second " can be expressed or hidden include one or more feature with closing.In description of the invention In, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection or can be in communication with each other;Can be joined directly together, can also be by between intermediary Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter, This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting Relation.In addition, the invention provides various specific techniques and material examples, but those of ordinary skill in the art can be with Recognize the application of other techniques and/or the use of other materials.
Fig. 1 and Fig. 2 is referred to, the Anti-surging current device 10 of the household electrical appliance 100 of better embodiment of the present invention includes Charging capacitor 11, switch 12 and controller 13.The positive pole 111 of charging capacitor 11 is connected with positive source 21.Switch 12 include with First connection end 121 of the connection of negative pole 112 of charging capacitor 11, the second connection end 122 being connected with power cathode 22 and control End 123.Controller 13 is connected with control terminal 123, and controller 13 is used for controlling switch 12 to realize that the multiple of charging capacitor 11 fill Electric cycle T i is until charging voltage V powers after reaching predetermined voltage threshold Vmax to household electrical appliance 100.Each charge cycle Ti bags Include the charging interval toni to be charged to charging capacitor 11 and disconnect the turn-off time that switch 12 stops charging to charging capacitor 11 toffi.Controller 13 is used to send connection signal in charging interval toni so that switch 12 connects according to connection signal connection first End 121 and second connection end 122 are connect to be charged to charging capacitor 11, and be more than in the charging current I for flowing through charging capacitor 11 or Cut-off signal is sent during equal to predetermined current threshold Imax so that switch 12 disconnects the first connection end 121 and the according to cut-off signal The connection of two connection ends 122 is to stop charging to charging capacitor 11.
The Anti-surging current device 10 of better embodiment of the present invention is filled by controlling switch 12 when preventing charging to reach Electric capacity 11 produces charging surge current, prevents overcurrent damage, by the charging interval of controlling switch 12, is filled with reaching to control The charging current I of electric capacity 11, prevent charging current I excessive so that the big reduction of the service life of charging capacitor 11.
In addition, relative to the device for carrying out Anti-surging electric current using semistor and relay, due to relay Device needs larger electric current to maintain closure, and Anti-surging current device 10 of the invention only needs very small electricity using the control of switch 12 Stream, the demand of power supply is greatly reduced, cost is reduced while saving the energy.
Household electrical appliance 100 can be air-conditioning, washing machine etc..
Positive source 21 and power cathode 22 are exported by the AC power 200 of AC power 40 after rectifier 20, exchange The AC power 200 of power supply 40 can be civil power, and rectifier 20 is used for the alternating current for exporting the AC power 200 of AC power 40 It is rectified into direct current.Rectifier 40 can be a part for household electrical appliance 100.AC power 23 and rectifier 24 collectively form electricity Source 20.
In the present embodiment, charging capacitor 11 can be electrochemical capacitor or multiple electrochemical capacitors being connected in series.
12 are switched to embed after stream diode for the embedded insulated gate bipolar transistor after stream diode or including nothing Insulated gate bipolar transistor and diode.First connection end 121 is collector, and second connection end 122 is emitter-base bandgap grading, control terminal 123 For grid.
In other embodiment, switch 12 can be the embedded metal oxide layer semiconductcor field effect after stream diode Transistor is embedded after the metal oxide layer semiconductcor field effect transisto and diode that flow diode including nothing.First connection End 121 is drain electrode, and second connection end 122 is source electrode, and control terminal 123 is grid.
Therefore, it can be high level to connect signal, and cut-off signal can be low level.
In present embodiment, controller 13 is micro controller (micro control unit, MCU).
In the present embodiment, charging voltage V reaches predetermined voltage threshold Vmax, Mei Gechong by n charge cycle Ti Electric cycle T i includes the charging interval toni to be charged to charging capacitor 11 and disconnection switch 12 stops what is being charged to charging capacitor 11 Turn-off time toff1.I.e.
Ti=toni+toffi.
Wherein, Ti is i-th of charge cycle, and toni is i-th of charging interval, and toffi be i-th disconnect when Between, n and i are natural number, and i is less than or equal to n.
In present embodiment, charge cycle Ti is fixed, and in other words all charge cycle Ti are equally long.During each charging Between toni be that charging current I reaches predetermined current threshold Imax time, it is remaining for corresponding turn-off time toffi, in this way, It as much as possible in each charge cycle Ti can charge morely, improve charge efficiency.In addition, Ti, toni and toffi must be big In the switching speed of switch 12.Specifically, in first charging interval ton1, charging voltage V reaches V1, in second charging In time ton2, charging voltage reaches V2, and in n-th of charging interval tonn, charging voltage V reaches Vmax, Vmax > ... V2 > V1, moreover, ton1 < ton2 < ... tonn.
In other embodiment or charging interval toni is fixed.Certainly, charging interval toni setting must It must meet that all corresponding charging current I are both less than equal to Imax.In the case, turn-off time toffi and charge cycle Ti It can be fixedly installed or change setting.
In other embodiment or turn-off time toffi is fixed.In the case, charging interval toni Or charge cycle Ti can be fixedly installed or change setting.Charging interval toni setting must is fulfilled for all corresponding chargings Electric current I is both less than equal to Imax.
In present embodiment, household electrical appliance 100 are air conditioner, and including SPM 30 and compressor 40.Intelligence Power model 30 can be with the equivalent load into belt switch, and is connected with positive source 21 and power cathode 22.In addition, intelligent power Module 30 is also connected with controller 13, and controller 13 is closed on household electrical appliance 100 after electricity (after being connected with AC power 200) SPM 30, compressor 40 do not work, and (i.e. charging voltage V reaches predetermined electricity after the charging complete of charging capacitor 11 After pressing threshold value Vmax) SPM 30 is opened to be powered to compressor 32, compressor 40 is started working.Meanwhile closure is opened 12 are closed so that charging capacitor 11 discharges is powered to SPM 30.
In addition, on household electrical appliance 100 after electricity, controller 300 first sends cut-off signal to disconnect 12 scheduled times of switch After enter back into multiple charge cycle Ti, rather than the electricity on of household electrical appliance 100 enters multiple charge cycle Ti.
The Anti-surging current methods of better embodiment of the present invention can be performed by Anti-surging device 10, and including step S11-S13。
S11:Connection signal is sent so that switch 12 connects the first connection end 121 and second connection end according to connection signal 122 to charging capacitor 11 to charge.
S12:Sent when the charging current I for flowing through charging capacitor 11 is more than or equal to predetermined current threshold cut-off signal with Make switch 12 according to the connection of cut-off signal the first connection end 121 of disconnection and second connection end 122 to stop to charging capacitor 11 Charging.
S13:S11 is returned to if charging voltage V is less than predetermined voltage threshold Vmax, and if charging voltage V reaches predetermined electricity Pressure threshold value Vmax then closes a switch 12 so that charging capacitor 11 discharges is powered to household electrical appliance 100.
The Anti-surging current methods of better embodiment of the present invention are charged by controlling switch 12 when preventing charging to reach Electric capacity 11 produces charging surge current, prevents overcurrent damage, by the charging interval of controlling switch 12, charging is controlled to reach The charging current I of electric capacity 11, prevent charging current I excessive so that the big reduction of the service life of charging capacitor 11.
In addition, relative to the device for carrying out Anti-surging electric current using semistor and relay, due to relay Device needs larger electric current to maintain closure, and Anti-surging current device 10 of the invention only needs very small electricity using the control of switch 12 Stream, the demand of power supply capacity is greatly reduced, cost is reduced while saving the energy.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation The description of mode ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment or example description Specific features, structure, material or feature are contained at least one embodiment or example of the present invention.In this specification In, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific spy of description Sign, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of changes, modification in the case of not departing from the principle and objective of the present invention, replace and become Type, the scope of the present invention are limited by claim and its equivalent.

Claims (10)

  1. A kind of 1. Anti-surging current device of household electrical appliance, it is characterised in that including:
    Charging capacitor, the positive pole of the charging capacitor are connected with positive source;
    Switch, the switch include the first connection end being connected with the negative pole of the charging capacitor, be connected with power cathode the Two connection ends and control terminal;And
    The controller being connected with the control terminal, the controller are used to control the switch to realize multiple charging capacitors Charge cycle until the charging voltage of the charging capacitor reaches is powered to the household electrical appliance after predetermined voltage threshold, each The charging interval and disconnect the switch stopping to institute that the charge cycle includes closure switch to charge to the charging capacitor The turn-off time of charging capacitor charging is stated, the controller is used to send connection signal within the charging interval so that described open Close and first connection end and the second connection end are connected to be charged to the charging capacitor according to the connection signal, and Flow through when the charging current of the charging capacitor is more than or equal to predetermined current threshold and send cut-off signal so that the switch root The connection that first connection end and the second connection end are disconnected according to the cut-off signal enters the turn-off time to stop Charged to the charging capacitor, the charging interval of charge cycle described in the latter is more than the institute of the previous charge cycle State the charging interval.
  2. 2. Anti-surging current device as claimed in claim 1, it is characterised in that the charging capacitor is electrochemical capacitor or more The individual electrochemical capacitor being connected in series.
  3. 3. Anti-surging current device as claimed in claim 1, it is characterised in that the switch is to be embedded after the exhausted of stream diode Edge grid bipolar transistor or including without embedded insulated gate bipolar transistor and diode after stream diode, described first Connection end is collector, and the second connection end is emitter-base bandgap grading, and the control terminal is grid.
  4. 4. Anti-surging current device as claimed in claim 1, it is characterised in that the switch is the embedded gold after stream diode Category-MOSFET is embedded after the metal oxide layer semiconductcor field effect crystal for flowing diode including nothing Pipe and diode;First connection end is drain electrode, and the second connection end is source electrode, and the control terminal is grid.
  5. 5. Anti-surging current device as claimed in claim 1, it is characterised in that the charge cycle or the turn-off time consolidate It is fixed to set.
  6. 6. Anti-surging current device as claimed in claim 1, it is characterised in that the controller is additionally operable in the household electric Cut-off signal is first sent on device after electricity with disconnect it is described switch the scheduled time after enter back into multiple charge cycles.
  7. 7. Anti-surging current device as claimed in claim 1, it is characterised in that the controller is additionally operable in the charging electricity Pressure reaches the predetermined voltage threshold and sends connection signal to connect the charging capacitor and the household electrical appliance, so that described fill Electric capacity electric discharge is powered for the household electrical appliance.
  8. 8. a kind of household electrical appliance, it includes:
    The rectifier being connected with AC power, the output of the rectifier include positive source and power cathode;
    SPM;And
    Anti-surging current device, including
    Charging capacitor, the positive pole of the charging capacitor are connected with told positive source;
    Switch, the first connection end that the switch includes being connected with the negative pole of the charging capacitor, it is connected with the power cathode Second connection end and control terminal;And
    The controller being connected with the control terminal and the SPM, the controller are used to control the switch with reality The charge cycle of existing multiple charging capacitors is after the charging voltage of the charging capacitor reaches predetermined voltage threshold to institute SPM power supply is stated, each charge cycle includes charging interval closure switch to be charged to the charging capacitor And the turn-off time that the switch stops charging to the charging capacitor is disconnected, the controller was used within the charging interval Send connection signal so that the switch according to the connection signal connect first connection end and the second connection end with Charge to the charging capacitor, and sent when the charging current for flowing through the charging capacitor is more than or equal to predetermined current threshold Cut-off signal is so that the switch disconnects the connection of first connection end and the second connection end according to the cut-off signal Into the turn-off time to stop charging to the charging capacitor, the charging interval of charge cycle described in the latter is more than The charging interval of the previous charge cycle.
  9. A kind of 9. Anti-surging current methods, it is characterised in that including:
    S11:Send connection signal and switch basis so as to be connected between positive source and power cathode with rushing charging capacitor series connection Signal closure is connected to be charged to the charging capacitor;
    S12:Send cut-off signal when the charging current for flowing through the charging capacitor is more than or equal to predetermined current threshold so that The switch is disconnected according to cut-off signal to stop charging to the charging capacitor;And
    S13:Return to S11 if charging voltage is less than predetermined voltage threshold, and each time the connection signal with it is corresponding described The duration of cut-off signal is charge cycle, before duration of the connection signal of charge cycle described in the latter is more than The duration of the connection signal of one charge cycle, and if the charging voltage reaches the predetermined voltage threshold Then close described switch so that charging capacitor electric discharge supplies household electrical appliance.
  10. 10. Anti-surging current methods as claimed in claim 9, it is characterised in that the Anti-surging current methods are in step S11 It is preceding also to include:
    S10:Cut-off signal is first sent after electricity on the household electrical appliance to disconnect the switch scheduled time.
CN201410829699.2A 2014-12-25 2014-12-25 Anti-surging current device, Anti-surging current methods and household electrical appliance Active CN104617782B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201410829699.2A CN104617782B (en) 2014-12-25 2014-12-25 Anti-surging current device, Anti-surging current methods and household electrical appliance

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CN104617782B true CN104617782B (en) 2017-12-12

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WO2018227422A1 (en) * 2017-06-14 2018-12-20 上海明石光电科技有限公司 Switch-mode power supply and soft-start circuit thereof
CN110071625A (en) * 2019-01-16 2019-07-30 广东美的制冷设备有限公司 Drive control circuit, air-conditioner controller and air conditioner
CN110518563B (en) * 2019-09-11 2021-10-22 广东志高暖通设备股份有限公司 Overvoltage protection method, MCU and air conditioning equipment
CN113794367B (en) * 2021-09-13 2024-08-20 深圳威迈斯新能源(集团)股份有限公司 Power supply with anti-surge function, control method thereof and vehicle-mounted charger
WO2024016780A1 (en) * 2022-07-22 2024-01-25 广东美的制冷设备有限公司 Buck circuit and power-on control method therefor, controller, and power-on control device

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