CN110138230A - Resonance circuit control method, power circuit and charging pile - Google Patents
Resonance circuit control method, power circuit and charging pile Download PDFInfo
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- CN110138230A CN110138230A CN201910552570.4A CN201910552570A CN110138230A CN 110138230 A CN110138230 A CN 110138230A CN 201910552570 A CN201910552570 A CN 201910552570A CN 110138230 A CN110138230 A CN 110138230A
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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
- H02M3/33569—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 having several active switching elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
This application provides a kind of resonance circuit control method, power circuit and charging piles, are related to charging technique field.Since the preset hair wave time cycle includes adjacent period first time and second time period, and period first time, second time period is associated with the heat dissipation of the physics of the multiple switch pipe in resonance circuit, therefore it alternately exports frequency-modulated wave to each switching tube within the hair wave time cycle according to period first time and second time period and adjusts wide wave, it can make each switching tube that can receive frequency-modulated wave within each hair wave time cycle, the wide wave of tune can be received again, realization frequency-modulated wave replaces output with the wide wave of tune, the cut-off current of switching tube each so is also able to achieve replacing for big cut-off current and small cut-off current, so that the loss of all switching tubes is almost the same, to avoid generating the biggish temperature difference in resonance circuit, realize the effect of heat distributing equilibrium.
Description
Technical field
This application involves charging technique fields, in particular to a kind of resonance circuit control method, power circuit and fill
Electric stake.
Background technique
With the development of charging technique, higher transfer efficiency and broader output voltage range have become charging module and expire
The inexorable trend of foot charging industry requirement.
To realize higher transfer efficiency, (abbreviation of Lr, Lm, Cr, they respectively represent the resonance in resonant parameter to LLC
Inductance, magnetizing inductance and resonant capacitance) topology be widely adopted in the design of charging module.Due to the efficient work of LLC topology
It is relatively narrow to make section, therefore in the wider output voltage in charging field and output current scope, it is difficult to accomplish low pressure output and underloading
Transfer efficiency with higher when output.
In existing solution, low pressure output and underloading output are reduced generally by the hair wave mode of modulating frequency and width
When working frequency, thus achieve the purpose that promoted transfer efficiency.But in modulating frequency and width, power device cut-off current size
Difference, loss can also have differences, and the loss for the power device being first turned off is very big, and the loss of the power device turned off afterwards is very
It is small, cause heat to be unevenly distributed weighing apparatus, to form heat dissipation short slab.
Summary of the invention
The application's is designed to provide a kind of resonance circuit control method, power circuit and charging pile, to solve resonance
In circuit because power device loss it is different caused by heat be unevenly distributed weighing apparatus the problem of.
Embodiments herein this can be implemented so that
In a first aspect, embodiments herein provides a kind of resonance circuit control method, which comprises obtain pre-
If the hair wave time cycle, the hair wave time cycle includes adjacent period first time and second time period；Wherein, institute
State period first time, the second time period is associated with the heat dissipation of the physics of the multiple switch pipe in resonance circuit；According to institute
Period first time and the second time period is stated alternately to export within the hair wave time cycle to each switching tube
Frequency-modulated wave and the wide wave of tune.
Optionally, when the multiple switching tube physics heat dissipation it is identical when, period first time and it is described second when
Between the period be not less than the switch periods of the switching tube, and period first time and the second time period phase
Together.
Optionally, when the multiple switching tube physics heat dissipation it is different when, period first time and it is described second when
Between the period be all larger than the switch periods of the switching tube, and period first time and the second time period are different.
Optionally, it is described according to period first time and the second time period within the hair wave time cycle
The step of to each switching tube alternating output frequency-modulated wave and adjusting wide wave includes: to work as within period first time to described
When switching tube exports frequency-modulated wave, is then exported in the second time period to the switching tube and adjust wide wave；Or when described the
When exporting tune width wave to the switching tube in a period of time, then exports and adjust to the switching tube in the second time period
Frequency wave.
Second aspect, embodiments herein additionally provides a kind of power circuit, including resonance circuit and controller, described
Resonance circuit includes multiple switch pipe, and the multiple switching tube is electrically connected with the controller；It is prestored in the controller
The wave time cycle is sent out, the hair wave time cycle includes adjacent period first time and second time period；Wherein, described
A period of time, the second time period are associated with the heat dissipation of the physics of the multiple switch pipe in resonance circuit；The controller
For according to period first time and the second time period within the hair wave time cycle to each switch
Pipe alternately exports frequency-modulated wave and adjusts wide wave.
Optionally, when the multiple switching tube physics heat dissipation it is identical when, period first time and it is described second when
Between the period be not less than the switch periods of the switching tube, and period first time and the second time period phase
Together.
Optionally, when the multiple switching tube physics heat dissipation it is different when, period first time and it is described second when
Between the period be all larger than the switch periods of the switching tube, and period first time and the second time period are different.
Optionally, the controller is used for when exporting frequency-modulated wave to the switching tube within period first time,
It is then exported in the second time period to the switching tube and adjusts wide wave；When within period first time to the switch
When wide wave is adjusted in pipe output, then frequency-modulated wave is exported to the switching tube in the second time period.
Optionally, the multiple switching tube includes first switch tube, second switch, third switching tube and the 4th switch
Pipe, the first switch tube are connected with the third switching tube, the second switch and the 4th switching tube series connection；It is described
Controller be used for when within period first time to the first switch tube, second switch, third switching tube or described
When 4th switching tube exports frequency-modulated wave, then to the first switch tube, second switch, third in the second time period
Wide wave is adjusted in switching tube or the 4th switching tube output；When within period first time to the first switch tube, second
When wide wave is adjusted in switching tube, third switching tube or the 4th switching tube output, then to described the in the second time period
One switching tube, second switch, third switching tube or the 4th switching tube export frequency-modulated wave.
The third aspect, embodiments herein additionally provide a kind of charging pile, including power supply described in above-mentioned second aspect
Circuit.
Compared with the prior art, the application has the advantages that
Resonance circuit control method, power circuit and charging pile provided by the embodiments of the present application, when due to preset hair wave
Between the period include adjacent period first time and second time period, and period first time, second time period and resonance
The physics of multiple switch pipe in circuit, which radiates, to be associated with, therefore according to period first time and second time period in week hair wave time
Frequency-modulated wave is alternately exported to each switching tube in phase and adjusts wide wave, can make each switching tube can within each hair wave time cycle
Frequency-modulated wave is received, and the wide wave of tune can be received, realization frequency-modulated wave replaces output, the pass of switching tube each in this way with the wide wave of tune
Power-off stream is also able to achieve replacing for big cut-off current and small cut-off current, so that the loss of all switching tubes is almost the same, thus
It avoids generating the biggish temperature difference in resonance circuit, realizes the effect of heat distributing equilibrium.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural block diagram of power circuit provided by the embodiment of the present application；
Fig. 2 is a kind of flow diagram of resonance circuit control method provided by the embodiment of the present application；
Fig. 3 is a kind of achievable electrical block diagram of power circuit provided by the embodiment of the present application；
Fig. 4 is frequency-modulated wave and a kind of schematic diagram for adjusting wide wave alternating output；
Fig. 5 is frequency-modulated wave and another schematic diagram for adjusting wide wave alternating output.
Icon: 100- power circuit；110- resonance circuit；120- controller；111- switching tube；Q1- first switch tube；
Q2- second switch；Q3- third switching tube；The 4th switching tube of Q4-.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It in the description of the present application, is only used for distinguishing description if there is term " first ", " second " etc., and should not be understood as
Indication or suggestion relative importance.
It should be noted that in the absence of conflict, the feature in embodiments herein can be combined with each other.
Referring to FIG. 1, being a kind of structural block diagram of power circuit 100 provided in this embodiment.The power circuit 100 can be with
It applies on charging pile, including resonance circuit 110 and controller 120, which includes multiple switch pipe 111, this is more
A switching tube 111 is electrically connected with controller 120.The controller 120 can be in super resonance region (the LLC work of resonance circuit 110
Frequency is greater than the workspace of resonance frequency) in, by implementing the hair wave strategy of modulating frequency and width to multiple switching tube 111, mentioning
While rising circuit conversion efficiency, the loss of multiple switching tube 111 can also be made almost the same, ensure that a certain extent
The harmony of heat distribution.In the following, the concrete operating principle of the power circuit 100 is described in detail.
In the present embodiment, the hair wave time cycle is prestored in the controller 120, which includes adjacent
Period first time and second time period；Wherein, more in period first time, second time period and resonance circuit 110
The physics of a switching tube 111, which radiates, to be associated with.
Specifically, when the heat dissipation of the physics of multiple switch pipe 111 is identical, period first time and second time period are not
Less than the switch periods of switching tube 111, and period first time is identical as second time period；When multiple switch pipe 111
When physics heat dissipation is different, period first time and second time period are all larger than the switch periods of switching tube 111, and when first
Between period and second time period it is different.
Optionally, when the heat dissipation of the physics of multiple switch pipe 111 is different, period first time and second time period can be with
It is all larger than the maximum value of the switch periods of switching tube 111.
In the present embodiment, can judge whether the physics heat dissipation of multiple switching tube 111 is identical by way of actual measurement.
When multiple switching tube 111 is in the identical situation of calorific value, if temperature is almost the same, show multiple switching tube 111
Physics heat dissipation is identical；If temperature is inconsistent, show that the physics heat dissipation of multiple switching tube 111 is different.Wherein, physics, which radiates, is
Refer to the heat dispersal situations with the associated physics heat dissipation channel of switching tube 111.
For example, when the switch periods of switching tube 111 are T, and by the physics heat dissipation of the multiple switching tube 111 of actual measurement discovery
It is identical, then it can set period first time t1=second time period t2=switch periods T or setting period first time
T1=second time period t2 > switch periods T；When the physics heat dissipation of multiple switching tube 111 is different, then when can set first
Between period t1 be greater than switch periods T, second time period t2 is greater than switch periods T, and period first time t1 and the second time
Period t2 is different, and wherein the specific value of t1 and t2 is determined according to the heat dispersal situations of the switching tube 111 actually used, the application
It is without limitation.
The controller 120 is used to be opened within the hair wave time cycle to each according to period first time and second time period
Close pipe 111 alternately output frequency-modulated wave and the wide wave of tune.
Specifically, which is used to then exist when exporting frequency-modulated wave to switching tube 111 within period first time
It is exported in second time period to switching tube 111 and adjusts wide wave；Wide wave is adjusted when exporting within period first time to switching tube 111
When, then frequency-modulated wave is exported to switching tube 111 in second time period.
In the present embodiment, for frequency-modulated wave generally than adjusting the duty ratio of wide wave big, controller 120 is directed to each switching tube 111,
Frequency-modulated wave is alternately exported according to period first time of acquisition and second time period and adjusts wide wave, in this way in each hair wave time
In period, on the driving port of the same switching tube 111, existing frequency-modulated wave has the wide wave of tune again, and big space rate and small duty ratio are real
Showing alternately, the cut-off current of corresponding switching tube 111 also achieves the alternating of big cut-off current and small cut-off current, so that
The loss of all switching tubes 111 is almost the same, realizes the effect of heat distributing equilibrium in resonance circuit 110.
Referring to FIG. 2, being a kind of flow diagram of resonance circuit control method provided in this embodiment.It needs to illustrate
It is that the resonance circuit control method of the embodiment of the present application is not limitation with Fig. 2 and specific order below, it should be understood that
In other embodiments, the sequence of the resonance circuit control method part step of the embodiment of the present application can be according to practical need
It is exchanged with each other or part steps therein also can be omitted or delete.It should also be noted that, provided in this embodiment humorous
Shake circuit control method, and the technical effect of basic principle and generation is same as the previously described embodiments, to briefly describe, the present embodiment
Part does not refer to place, can refer to the corresponding contents in the above embodiments.The resonance circuit control method can be applied upper
In the controller 120 stated, detailed process shown in Fig. 2 will be described in detail below.
Step S101, obtains preset hair wave time cycle, the hair wave time cycle include adjacent period first time with
Second time period；Wherein, the physics heat dissipation of the multiple switch pipe in period first time, second time period and resonance circuit
Association.
Optionally, when the heat dissipation of the physics of multiple switch pipe is identical, period first time and second time period be not small
In the switch periods of switching tube, and period first time is identical as second time period.
Optionally, when the heat dissipation of the physics of multiple switch pipe is different, period first time and second time period are all larger than
The switch periods of switching tube, and period first time and second time period difference.
Step S102 is handed within the hair wave time cycle to each switching tube according to period first time and second time period
For output frequency-modulated wave and adjust wide wave.
Specifically, step S102 includes: when exporting frequency-modulated wave to switching tube within period first time, then second
Exported to switching tube in time cycle and adjust wide wave, or when exported within period first time to switching tube adjust wide wave when, then the
Frequency-modulated wave is exported to switching tube in two time cycles.
In the following, alternately exporting frequency-modulated wave and tune to controller 120 in the application by taking power circuit 100 shown in Fig. 3 as an example
The principle of wide wave is explained in detail.As shown in figure 3, multiple switching tube include first switch tube Q1, second switch Q2,
Third switching tube Q3 and the 4th switching tube Q4, first switch tube Q1 connect with third switching tube Q3, second switch Q2 and the 4th
Switching tube Q4 series connection, controller 120 and first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4
Driving port be electrically connected.Controller 120 controls first switch tube Q1 by output PWM1 signal and is switched on or off, and exports
PWM2 signal control second switch Q2 open perhaps turn off output PWM3 signal control third switching tube Q3 open or close
Disconnected, output PWM4 signal controls the 4th switching tube Q4 and opens or turn off, and PWM1, PWM2, PWM3, PWM4 signal drive one group
LLC resonance bridge.
The controller 120 is used to work as within period first time to first switch tube Q1, second switch Q2, third switch
Pipe Q3 or the 4th switching tube Q4 output frequency-modulated wave when, then in second time period to first switch tube Q1, second switch Q2,
Wide wave is adjusted in third switching tube Q3 or the 4th switching tube Q4 output；When being opened within period first time to first switch tube Q1, second
When closing pipe Q2, third switching tube Q3 or the 4th switching tube Q4 output tune width wave, then to first switch tube in second time period
Q1, second switch Q2, third switching tube Q3 or the 4th switching tube Q4 export frequency-modulated wave.
As shown in figure 4, when the object of first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4
When reason heat dissipation is identical, then settable period first time t1 and second time period t2 are consistent with switch periods T, controller 120
By alternately output frequency-modulated wave and adjusting wide wave in period first time t1 and second time period t2, can make first switch tube Q1,
The loss of second switch Q2, third switching tube Q3 and the 4th switching tube Q4 are theoretically equal.Specifically, for first
Switching tube Q1 and second switch Q2, controller 120 exports the wide wave of tune in period first time t1, in second time period t2
Interior output frequency-modulated wave；For third switching tube Q3 and the 4th switching tube Q4, controller 120 exports tune in period first time t1
Frequency wave, wide wave is adjusted in output in second time period t2.
As shown in figure 5, when the object of first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4
When reason heat dissipation is different, then according to the physics of first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4
Heat dispersal situations determine period first time t1 and second time period t2, at this time period first time t1 > switch periods T, second
Time cycle t2 > switch periods T, and period first time t1 ≠ second time period t2, controller 120 pass through at the first time
Period t1 and second time period t2 alternately exports frequency-modulated wave and adjusts wide wave, so as to adjust PWM1 signal, PWM2 signal, PWM3 letter
Number and PWM4 signal hair the wave time cycle in duty ratio so that first switch tube Q1, second switch Q2, third switching tube
The loss of Q3 and the 4th switching tube Q4 are almost the same.Specifically, for first switch tube Q1 and third switching tube Q3, controller
120 export the wide wave of tune in period first time t1, export frequency-modulated wave in second time period t2；For second switch Q2
With the 4th switching tube Q4, controller 120 exports frequency-modulated wave in period first time t1, exports and adjusts in second time period t2
Wide wave.
As it can be seen that the application realize modulating frequency and width hair wave on the basis of, by period first time t1 and the second time
Period t2 alternately output frequency-modulated wave and adjusts wide wave, no matter first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th
Whether the physics heat dissipation of switching tube Q4 is identical, in each hair wave time cycle t1+t2, the PWM1 signal of the output of controller 120,
It include frequency-modulated wave and the wide wave of tune in PWM2 signal, PWM3 signal and PWM4 signal, the theoretical duty ratio of frequency-modulated wave is 50%,
The duty ratio of wide wave is adjusted to change with switching frequency and change, big space rate and small duty ratio realize alternating, for first switch
For any of pipe Q1, second switch Q2, third switching tube Q3 and the 4th switching tube Q4, big cut-off current is also achieved
With the alternating of small cut-off current, thus ensure that first switch tube Q1, second switch Q2, third switching tube Q3 and the 4th switch
The loss of pipe Q4 is almost the same, avoids because differential loss is asked so that forming heat dissipation short slab caused by cut-off current is of different sizes
Topic.
It should be noted that above-mentioned Fig. 3 to Fig. 5 describe be only it is one such, similar to the power circuit 100 of Fig. 3,
The resonance circuit control method of the application can be used, principle is similar, herein without repeating.
In conclusion resonance circuit control method, power circuit and charging pile provided by the embodiments of the present application, due to default
The hair wave time cycle include adjacent period first time and second time period, and period first time, week the second time
Phase is associated with the heat dissipation of the physics of the multiple switch pipe in resonance circuit, therefore is being sent out according to period first time and second time period
Frequency-modulated wave is alternately exported to each switching tube in the wave time cycle and adjusts wide wave, and each switching tube can be made in each week hair wave time
Frequency-modulated wave can be received in phase and receives the wide wave of tune, and realization frequency-modulated wave replaces output with the wide wave of tune, each opens in this way
The cut-off current for closing pipe is also able to achieve replacing for big cut-off current and small cut-off current, so that the loss of all switching tubes basic one
It causes, to avoid generating the biggish temperature difference in resonance circuit, realizes the effect of heat distributing equilibrium.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of resonance circuit control method, which is characterized in that the described method includes:
The preset hair wave time cycle is obtained, the hair wave time cycle includes adjacent period first time and week the second time
Phase；Wherein, the physics of the multiple switch pipe in period first time, the second time period and resonance circuit, which radiates, closes
Connection；
According to period first time and the second time period to each switch within the hair wave time cycle
Pipe alternately exports frequency-modulated wave and adjusts wide wave.
2. the method according to claim 1, wherein when the multiple switching tube physics heat dissipation it is identical when, institute
It states period first time and the second time period is not less than the switch periods of the switching tube, and the first time
Period is identical as the second time period.
3. the method according to claim 1, wherein when the multiple switching tube physics heat dissipation it is different when, institute
It states period first time and the second time period is all larger than the switch periods of the switching tube, and the week first time
Phase is different with the second time period.
4. the method according to claim 1, wherein it is described according to period first time and it is described second when
Between to each switching tube, alternately output frequency-modulated wave and the step of adjusting wide wave, include: within the hair wave time cycle period
When exporting frequency-modulated wave to the switching tube within period first time, then to institute in the second time period
It states switching tube output and adjusts wide wave；Or
When exporting tune width wave to the switching tube within period first time, then to institute in the second time period
State switching tube output frequency-modulated wave.
5. a kind of power circuit, which is characterized in that including resonance circuit and controller, the resonance circuit includes multiple switch
Pipe, the multiple switching tube are electrically connected with the controller；Hair wave time cycle, the hair wave are prestored in the controller
Time cycle includes adjacent period first time and second time period；Wherein, period first time, it is described second when
Between the physics heat dissipation of period and the multiple switch pipe in resonance circuit be associated with；
The controller was used for according to period first time and the second time period within the hair wave time cycle
Frequency-modulated wave is alternately exported to each switching tube and adjusts wide wave.
6. power circuit according to claim 5, which is characterized in that when the physics heat dissipation of the multiple switching tube is identical
When, period first time and the second time period are not less than the switch periods of the switching tube, and described
A period of time is identical as the second time period.
7. power circuit according to claim 5, which is characterized in that when the physics heat dissipation of the multiple switching tube is different
When, period first time and the second time period are all larger than the switch periods of the switching tube, and described first
Time cycle is different with the second time period.
8. power circuit according to claim 5, which is characterized in that the controller is used for when in week first time
When exporting frequency-modulated wave to the switching tube in the phase, is then exported in the second time period to the switching tube and adjust wide wave；When
When exporting tune width wave to the switching tube within period first time, then to the switch in the second time period
Pipe exports frequency-modulated wave.
9. power circuit according to claim 8, which is characterized in that the multiple switching tube includes first switch tube,
Two switching tubes, third switching tube and the 4th switching tube, the first switch tube are connected with the third switching tube, and described second opens
The series connection of 4th switching tube described in Guan Guanhe；
The controller is used to work as within period first time to the first switch tube, second switch, third switch
When pipe or the 4th switching tube output frequency-modulated wave, then opened in the second time period to the first switch tube, second
Wide wave is adjusted in Guan Guan, third switching tube or the 4th switching tube output；When being opened within period first time to described first
When wide wave is adjusted in Guan Guan, second switch, third switching tube or the 4th switching tube output, then in the second time period
Frequency-modulated wave is exported to the first switch tube, second switch, third switching tube or the 4th switching tube.
10. a kind of charging pile, which is characterized in that including such as described in any item power circuits of claim 5-9.
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| CN201910552570.4A CN110138230A (en) | 2019-06-25 | 2019-06-25 | Resonance circuit control method, power circuit and charging pile |
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| EP0978933A2 (en) * | 1998-08-06 | 2000-02-09 | STMicroelectronics GmbH | DC-DC converter |
| CN101707440A (en) * | 2009-11-12 | 2010-05-12 | 中兴通讯股份有限公司 | LLC resonant converter control method, synchronous rectification control method and device |
| CN103441692A (en) * | 2013-07-30 | 2013-12-11 | 东软飞利浦医疗设备系统有限责任公司 | Series resonance inverter and implementation method thereof |
| CN109643957A (en) * | 2016-08-30 | 2019-04-16 | 松下知识产权经营株式会社 | Switching power unit and semiconductor device |
| CN206620054U (en) * | 2016-10-28 | 2017-11-07 | 深圳朗必兴科技有限公司 | A kind of LLC low-frequency ripple suppression circuit, apparatus and system |
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