CN104617782A - Surge current resisting device, surge current resisting method and household appliance - Google Patents
Surge current resisting device, surge current resisting method and household appliance Download PDFInfo
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- CN104617782A CN104617782A CN201410829699.2A CN201410829699A CN104617782A CN 104617782 A CN104617782 A CN 104617782A CN 201410829699 A CN201410829699 A CN 201410829699A CN 104617782 A CN104617782 A CN 104617782A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention discloses a surge current resisting device of a household appliance. The surge current resisting device of the household appliance includes charging capacitors, of which positive electrodes are connected with a positive electrode of a power supply; a switch, which comprises a first connecting end connected with a negative electrode of the charging capacitor, a second connecting end connected with a negative electrode of the power supply, and a control end; a controller, which is connected with the control end and used for controlling the switch so as to realize the charging cycle of multiple charging capacitors and supply power to the household appliance after the charging voltage of the charging capacitor reaches a preset voltage threshold, wherein every charging cycle includes a charging time when a closing switch charges the charging capacitor until the charging current flowing through the charging capacitor is less than or equal to the preset current threshold value and a disconnection time when the following breaking switch stops charging the charging capacitor. The invention further provides a surge current resisting method and a household appliance. Through the control switch, the surge current resisting device as a good embodiment of the invention is able to prevent the charging capacitor from generating the charging surge current in the process of charging, and avoid overcurrent damage.
Description
Technical field
The present invention relates to household electrical appliance, especially relate to a kind of Anti-surging current device, Anti-surging current methods and household electrical appliance.
Background technology
Household electrical appliance easily produce surge current when powering on, and constitute a threat to household electrical appliance and Electrical Safety.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention needs to provide a kind of 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 characterized in that comprising:
Charging capacitor, the positive pole of described charging capacitor is connected with positive source;
Switch, described switch comprises the first link be connected with the negative pole of described charging capacitor, the second link be connected with power cathode and control end; And
The controller be connected with described control end, described controller is for controlling described switch to realize the charge cycle of multiple described charging capacitor until the charging voltage of described charging capacitor is powered to described household electrical appliance after reaching predetermined voltage threshold, each described charge cycle comprises Closing Switch with to the charging interval of described charging capacitor charging and disconnect the opening time that described switch stops charging to described charging capacitor, described controller is used for sending connection signal within the described charging interval and connects described first link and described second link with to described charging capacitor charging to make described switch according to described connection signal, and send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and enter described opening time to stop charging to described charging capacitor with the connection making described switch and disconnect described first link and described second link according to described cut-off signal.
In some embodiments, described charging capacitor is electrochemical capacitor or multiple electrochemical capacitor be connected in series.
In some embodiments, described switch is the insulated gate bipolar transistor of the embedded stream diode that continues or comprises without the embedded insulated gate bipolar transistor and diode that flow diode of continuing, described first link is collector, and described second link is emitter-base bandgap grading, and described control end is grid.
In some embodiments, described switch is the metal-oxide layer semiconductcor field effect transistor of the embedded stream diode that continues or comprises without the embedded metal-oxide layer semiconductcor field effect transistor and diode that flow diode of continuing; Described first link is drain electrode, and described second link is source electrode, and described control end is grid.
In some embodiments, are fixedly installed described charge cycle, described charging interval or described opening time.
In some embodiments, described controller also enters multiple described charge cycle for first sending cut-off signal after described household electrical appliance power on again after disconnecting the described switch scheduled time.
In some embodiments, described controller also sends connection signal to connect described charging capacitor and described household electrical appliance for reaching described predetermined voltage threshold in described charging voltage, discharges power for described household electrical appliance to make described charging capacitor.
According to the household electrical appliance of embodiment of the present invention, it comprises:
The rectifier be connected with AC power, the output of described rectifier comprises positive source and power cathode;
Intelligent Power Module; And
Anti-surging current device, comprises
Charging capacitor, the positive pole of described charging capacitor is connected with told positive source;
Switch, described switch comprises the first link be connected with the negative pole of described charging capacitor, the second link be connected with described power cathode and control end; And
The controller be connected with described control end and described Intelligent Power Module, described controller is for controlling described switch to realize the charge cycle of multiple described charging capacitor until the charging voltage of described charging capacitor is powered to described Intelligent Power Module after reaching predetermined voltage threshold, each described charge cycle comprises Closing Switch with to the charging interval of described charging capacitor charging and disconnect the opening time that described switch stops charging to described charging capacitor, described controller is used for sending connection signal within the described charging interval and connects described first link and described second link with to described charging capacitor charging to make described switch according to described connection signal, and send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and enter described opening time to stop charging to described charging capacitor with the connection making described switch and disconnect described first link and described second link according to described cut-off signal.
According to the Anti-surging current methods of embodiment of the present invention, it is characterized in that comprising:
S11: send connection signal to make and to rush charging capacitor series connection to be connected between positive source and power cathode switch closed to charge to described charging capacitor according to connection signal;
S12: send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and disconnect stopping charging to described charging capacitor to make described switch according to cut-off signal; And
S13: if charging voltage is less than predetermined voltage threshold, return S11, if described charging voltage reaches described predetermined voltage threshold, the described switch that closes supplies household electrical appliance to make described charging capacitor discharge.
In some embodiments, described Anti-surging current methods also comprises before step S11:
S10: first send cut-off signal to disconnect the described switch scheduled time after described household electrical appliance power on.
The Anti-surging current device of better embodiment of the present invention is by controlling described switch, with reach prevent charging time described charging capacitor produce charging surge current, prevent overcurrent damage, by controlling the charging interval of described switch, control the charging current of described charging capacitor well to reach, prevent that described charging current is excessive makes the large minimizing in useful life of described charging capacitor.
In addition, relative to the device using semistor and relay to carry out Anti-surging electric current, because relay needs larger electric current to remain closed, Anti-surging current device of the present invention uses described switch control rule only to need very little electric current, greatly reduce the demand of power supply, reduce costs while energy savings.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of execution mode, 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
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrically connected or can intercom mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Disclosing hereafter provides many different execution modes or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various execution mode and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
Refer to Fig. 1 and Fig. 2, the Anti-surging current device 10 of the household electrical appliance 100 of better embodiment of the present invention comprises charging capacitor 11, switch 12 and controller 13.The positive pole 111 of charging capacitor 11 is connected with positive source 21.Switch 12 comprises the first link 121 be connected with the negative pole 112 of charging capacitor 11, the second link 122 be connected with power cathode 22 and control end 123.Controller 13 is connected with control end 123, controller 13 for control switch 12 with realize charging capacitor 11 multiple charge cycle Ti until charging voltage V reach predetermined voltage threshold Vmax after give household electrical appliance 100 power.Each charge cycle Ti comprise to charging capacitor 11 charge charging interval toni and cut-off switch 12 stop to charging capacitor 11 charge toffi opening time.Controller 13 connects first link 121 and second link 122 to charging capacitor 11 to charge to make switch 12 according to connection signal for sending connection signal at charging interval toni, and sends cut-off signal when the charging current I flowing through charging capacitor 11 is less than or equal to predetermined current threshold Imax and disconnect the connection of the first link 121 and the second link 122 to stop charging to charging capacitor 11 to make switch 12 according to cut-off signal.
The Anti-surging current device 10 of better embodiment of the present invention is by control switch 12, with reach prevent charging time charging capacitor 11 produce charging surge current, prevent overcurrent damage, by the charging interval of control switch 12, control the charging current I of charging capacitor 11 well to reach, prevent that charging current I is excessive makes charging capacitor 11 large minimizing in useful life.
In addition, relative to the device using semistor and relay to carry out Anti-surging electric current, because relay needs larger electric current to remain closed, Anti-surging current device 10 of the present invention uses switch 12 to control only to need very little electric current, greatly reduce the demand of power supply, reduce costs while energy savings.
Household electrical appliance 100 can be air-conditioning, washing machine etc.
Positive source 21 and power cathode 22 are exported after rectifier 20 by AC power 40 AC power 200, and AC power 40 AC power 200 can be civil power, and rectifier 20 becomes direct current for AC rectification AC power 40 AC power 200 exported.Rectifier 40 can be a part for household electrical appliance 100.AC power 23 and rectifier 24 form power supply 20 jointly.
In the present embodiment, charging capacitor 11 can be electrochemical capacitor or multiple electrochemical capacitor be connected in series.
Switch 12 is the insulated gate bipolar transistor of the embedded stream diode that continues or comprises without the embedded insulated gate bipolar transistor and diode that flow diode of continuing.First link 121 is collector, and the second link 122 is emitter-base bandgap grading, and control end 123 is grid.
In other execution mode, switch 12 for the metal-oxide layer semiconductcor field effect transistor of the embedded stream diode that continues or can comprise without the embedded metal-oxide layer semiconductcor field effect transistor and diode that flow diode of continuing.First link 121 is drain electrode, and the second link 122 is source electrode, and control end 123 is grid.
Therefore, connection signal can be high level, 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 through n charge cycle Ti, each charge cycle Ti comprise to charging capacitor 11 charge charging interval toni and cut-off switch 12 stop to charging capacitor 11 charge toff1 opening time.Namely
Ti＝toni+toffi，
Wherein, Ti is i-th described charge cycle, and toni is i-th charging interval, and toffi is i-th opening time, n and i is natural number, and i is less than or equal to n.
In present embodiment, charge cycle Ti fixes, and in other words all charge cycle Ti are equally long.Each charging interval toni is the time that charging current I reaches predetermined current threshold Imax, and that remaining is corresponding toffi opening time, so, as much as possible in each charge cycle Ti can charge morely, improves charge efficiency.In addition, Ti, toni and toffi must be greater than the switching speed of switch 12.Concrete, in first charging interval ton1, charging voltage V reaches V1, in second charging interval ton2, charging voltage reaches V2, in the n-th charging interval tonn, charging voltage V reaches Vmax, Vmax> ... V2>V1, and, ton1<ton2< ... tonn.
In other execution mode, also can be that charging interval toni fixes.Certainly, the charging current I that must meet all correspondences that arranges of charging interval toni is less than or equal to Imax.In the case, toffi and charge cycle Ti can be fixedly installed or change setting opening time.
In other execution mode, also can be opening time toffi fix.In the case, charging interval toni or charge cycle Ti can be fixedly installed or change setting.The charging current I that must meet all correspondences that arranges of charging interval toni is less than or equal to Imax.
In present embodiment, household electrical appliance 100 are air conditioner, and comprise Intelligent Power Module 30 and compressor 40.Intelligent Power Module 30 equivalence can become the load of 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, controller 13 (after being namely connected with AC power 200) after household electrical appliance 100 power on cuts out Intelligent Power Module 30, compressor 40 does not work, and (after namely charging voltage V reaches predetermined voltage threshold Vmax) opens Intelligent Power Module 30 to power to compressor 32 after charging capacitor 11 charging complete, compressor 40 is started working.Meanwhile, Closing Switch 12 to be powered to Intelligent Power Module 30 to make charging capacitor 11 discharge.
In addition, after household electrical appliance 100 power on, controller 300 first sends cut-off signal to enter multiple charge cycle Ti after cut-off switch 12 scheduled time again, but not household electrical appliance 100 enter multiple charge cycle Ti once powering on.
The Anti-surging current methods of better embodiment of the present invention can be performed by Anti-surging device 10, and comprises step S11-S13.
S11: send connection signal and connect the first link 121 and the second link 122 to charge to charging capacitor 11 to make switch 12 according to connection signal.
S12: send cut-off signal when the charging current I flowing through charging capacitor 11 is less than or equal to predetermined current threshold and disconnect the connection of the first link 121 and the second link 122 to stop charging to charging capacitor 11 to make switch 12 according to cut-off signal.
S13: if charging voltage V is less than predetermined voltage threshold Vmax, return S11, if charging voltage V reaches predetermined voltage threshold Vmax, closes a switch and 12 to power to household electrical appliance 100 to make charging capacitor 11 discharge.
The Anti-surging current methods of better embodiment of the present invention is by control switch 12, with reach prevent charging time charging capacitor 11 produce charging surge current, prevent overcurrent damage, by the charging interval of control switch 12, control the charging current I of charging capacitor 11 well to reach, prevent that charging current I is excessive makes charging capacitor 11 large minimizing in useful life.
In addition, relative to the device using semistor and relay to carry out Anti-surging electric current, because relay needs larger electric current to remain closed, Anti-surging current device 10 of the present invention uses switch 12 to control only to need very little electric current, greatly reduce the demand of power supply capacity, reduce costs while energy savings.
In the description of this specification, specific features, structure, material or feature that the description of reference term " execution mode ", " some execution modes ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described execution mode or example are contained at least one execution mode of the present invention or example.In this manual, identical execution mode or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more execution mode or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these execution modes when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. an Anti-surging current device for household electrical appliance, is characterized in that comprising:
Charging capacitor, the positive pole of described charging capacitor is connected with positive source;
Switch, described switch comprises the first link be connected with the negative pole of described charging capacitor, the second link be connected with power cathode and control end; And
The controller be connected with described control end, described controller is for controlling described switch to realize the charge cycle of multiple described charging capacitor until the charging voltage of described charging capacitor is powered to described household electrical appliance after reaching predetermined voltage threshold, each described charge cycle comprises Closing Switch with to the charging interval of described charging capacitor charging and disconnect the opening time that described switch stops charging to described charging capacitor, described controller is used for sending connection signal within the described charging interval and connects described first link and described second link with to described charging capacitor charging to make described switch according to described connection signal, and send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and enter described opening time to stop charging to described charging capacitor with the connection making described switch and disconnect described first link and described second link according to described cut-off signal.
2. Anti-surging current device as claimed in claim 1, it is characterized in that, described charging capacitor is electrochemical capacitor or multiple electrochemical capacitor be connected in series.
3. Anti-surging current device as claimed in claim 1, it is characterized in that, described switch is the insulated gate bipolar transistor of the embedded stream diode that continues or comprises without the embedded insulated gate bipolar transistor and diode that flow diode of continuing, described first link is collector, described second link is emitter-base bandgap grading, and described control end is grid.
4. Anti-surging current device as claimed in claim 1, it is characterized in that, described switch is the metal-oxide layer semiconductcor field effect transistor of the embedded stream diode that continues or comprises without the embedded metal-oxide layer semiconductcor field effect transistor and diode that flow diode of continuing; Described first link is drain electrode, and described second link is source electrode, and described control end is grid.
5. Anti-surging current device as claimed in claim 1, it is characterized in that, described charge cycle, described charging interval or described opening time are fixedly installed.
6. Anti-surging current device as claimed in claim 1, it is characterized in that, described controller also enters multiple described charge cycle for first sending cut-off signal after described household electrical appliance power on again after disconnecting the described switch scheduled time.
7. Anti-surging current device as claimed in claim 1, it is characterized in that, described controller also sends connection signal to connect described charging capacitor and described household electrical appliance for reaching described predetermined voltage threshold in described charging voltage, discharges power for described household electrical appliance to make described charging capacitor.
8. household electrical appliance, it comprises:
The rectifier be connected with AC power, the output of described rectifier comprises positive source and power cathode;
Intelligent Power Module; And
Anti-surging current device, comprises
Charging capacitor, the positive pole of described charging capacitor is connected with told positive source;
Switch, described switch comprises the first link be connected with the negative pole of described charging capacitor, the second link be connected with described power cathode and control end; And
The controller be connected with described control end and described Intelligent Power Module, described controller is for controlling described switch to realize the charge cycle of multiple described charging capacitor until the charging voltage of described charging capacitor is powered to described Intelligent Power Module after reaching predetermined voltage threshold, each described charge cycle comprises Closing Switch with to the charging interval of described charging capacitor charging and disconnect the opening time that described switch stops charging to described charging capacitor, described controller is used for sending connection signal within the described charging interval and connects described first link and described second link with to described charging capacitor charging to make described switch according to described connection signal, and send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and enter described opening time to stop charging to described charging capacitor with the connection making described switch and disconnect described first link and described second link according to described cut-off signal.
9. an Anti-surging current methods, is characterized in that comprising:
S11: send connection signal to make and to rush charging capacitor series connection to be connected between positive source and power cathode switch closed to charge to described charging capacitor according to connection signal;
S12: send cut-off signal when the charging current flowing through described charging capacitor is less than or equal to predetermined current threshold and disconnect stopping charging to described charging capacitor to make described switch according to cut-off signal; And
S13: if charging voltage is less than predetermined voltage threshold, return S11, if described charging voltage reaches described predetermined voltage threshold, the described switch that closes supplies household electrical appliance to make described charging capacitor discharge.
10. Anti-surging current methods as claimed in claim 9, it is characterized in that, described Anti-surging current methods also comprises before step S11:
S10: first send cut-off signal to disconnect the described switch scheduled time after described household electrical appliance power on.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN104617782A true CN104617782A (en) | 2015-05-13 |
| CN104617782B CN104617782B (en) | 2017-12-12 |
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Cited By (4)
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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 |
| CN110518563A (en) * | 2019-09-11 | 2019-11-29 | 广东志高暖通设备股份有限公司 | The method and its MCU of overvoltage protection, air-conditioning equipment |
| CN113794367A (en) * | 2021-09-13 | 2021-12-14 | 深圳威迈斯新能源股份有限公司 | 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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|---|---|
| CN104617782B (en) | 2017-12-12 |
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