CN103208849B - A kind of charging device - Google Patents
A kind of charging device Download PDFInfo
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- CN103208849B CN103208849B CN201310158413.8A CN201310158413A CN103208849B CN 103208849 B CN103208849 B CN 103208849B CN 201310158413 A CN201310158413 A CN 201310158413A CN 103208849 B CN103208849 B CN 103208849B
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Abstract
The invention discloses a kind of charging device, it comprises: AC-AC modular converter, described AC-AC modular converter comprises the first switching tube, second switch pipe, the first driver element and the second driver element, described first switching tube is connected with described first driver element, and described second switch pipe is connected with described second driver element; Resonant capacitance and transformer, the parallel connection of primary windings of described resonant capacitance and described transformer; Rectification module, described rectification module is connected with described transformer; Sampling control module, sampling control module is connected with the second driver element with the two ends of described resonant capacitance, described rectification module, the first driver element respectively, and described sampling control module generates control signal to control described first switching tube and second switch pipe according to the d. c. voltage signal that the voltage signal at the described resonant capacitance two ends of sampling and described rectification module export.This charging device simplifies converting circuit structure and link, improves electrical energy transfer efficiency.
Description
Technical field
The present invention relates to electronic circuit technology field, particularly a kind of charging device.
Background technology
Current charging circuit, DC-DC change-over circuit, switching power circuit major part are all after first AC rectification being transformed into pulsating direct current and AC-DC, carry out filtering again, then this direct current converted to high-frequency ac and DC-AC and power factor correction and PFC(PowerFactorCorrection through switching circuit) after, high-frequency ac is rectified into direct current and AC-DC again by this high-frequency ac after high frequency transformer, finally carries out filtering adjustment voltage stabilizing.
By above-mentioned known, in prior art, charging circuit needs through Four processes, and not only complex structure but also electric energy often flow through the loss that a process all can have certain energy, inefficiency.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, the object of the invention is to propose one and can simplify converting circuit structure and link, thus improve the charging device of transmission efficiency.
For achieving the above object, a kind of charging device that the embodiment of the present invention proposes, comprise: AC-AC modular converter, described AC-AC modular converter comprises the first switching tube, second switch pipe, the first driver element and the second driver element, described first switching tube is connected with described first driver element, described second switch pipe is connected with described second driver element, and described AC-AC modular converter is used for the alternating current electric main of input being converted to predeterminated frequency; Resonant capacitance and transformer, the parallel connection of primary windings of described resonant capacitance and described transformer, one end of described resonant capacitance is connected with described first switching tube respectively with one end of the primary coil of described transformer, and the other end of described resonant capacitance is connected with described second switch pipe respectively with the other end of the primary coil of described transformer; Rectification module, described rectification module is connected with described transformer, for converting the predeterminated frequency alternating current after described transformer transformation to direct current; Sampling control module, described sampling control module is connected with the second driver element with the two ends of described resonant capacitance, described rectification module, the first driver element respectively, the d. c. voltage signal that described sampling control module exports according to the voltage signal at the described resonant capacitance two ends of sampling and described rectification module generates control signal, and described control signal generates drive singal to control described first switching tube and second switch pipe after described first driver element and the second driver element amplify.
According to the charging device of the embodiment of the present invention, by AC-AC modular converter, the electric main of input is directly changed into high-frequency alternating current, then after high frequency transformer, by rectification module, this high-frequency ac is carried out rectification again, the alternating current of input decreases an AC-DC rectifying conversion link and power factor correction PFC link, thus decreases the intermediate links of current energy.Therefore, this charging device circuit structure is simple, and conversion efficiency is high, and it is flexible to export direct current Serial regulation, and the precision of voltage regulation is high.
Wherein, described charging device also comprises: even module, described even module is connected with second switch pipe with described first switching tube respectively, for the electric main of described input and described first switching tube and second switch pipe are carried out electromagnetic isolation, preventing pollution external power grid.
In one embodiment of the invention, described even module comprises further: the first electric capacity, and the two ends of described first electric capacity are connected respectively with two inputs of described electric main; Common mode inductance, described common mode inductance comprises the first coil and the second coil, and one end of described first coil is connected with one end of described first electric capacity, and one end of described second coil is connected with the other end of described first electric capacity; Second electric capacity, one end of described second electric capacity is connected with the other end of described first coil, and the other end of described second electric capacity is connected with the other end of described second coil.
And, in one embodiment of the invention, the source electrode of described first switching tube is connected with one end of described second electric capacity, and the grid of described first switching tube is connected with described first driver element, and the drain electrode of described first switching tube is connected with one end of described resonant capacitance; The source electrode of described second switch pipe is connected with the other end of described second electric capacity, and the grid of described second switch pipe is connected with described second driver element, and the drain electrode of described second switch pipe is connected with the other end of described resonant capacitance.
In one embodiment of the invention, described rectification module comprises further: the first diode, and the positive terminal of described first diode is connected with one end of the secondary coil of described transformer; Second diode, the positive terminal of described second diode is connected with the other end of the secondary coil of described transformer, and the negative pole end of described second diode is connected with the negative pole end of described first diode.
And, described sampling control module comprises further: controlling of sampling unit, described controlling of sampling unit comprises the first sampling end, the second sampling end, the 3rd sampling end, the 4th sampling end and control signal output, described first sampling end is connected with the negative pole end of the second diode with the negative pole end of described first diode respectively, described second sampling end is connected with the centre cap of the secondary coil of described transformer, described 3rd sampling end is connected with one end of described resonant capacitance, and described 4th sampling end is connected with the other end of described resonant capacitance; Current-limiting resistance, one end of described current-limiting resistance is connected with described control signal output; Light-emitting diode, the positive terminal of described light-emitting diode is connected with the other end of described current-limiting resistance, the negative pole end ground connection of described light-emitting diode.
In addition, described charging device also comprises: filtration module, and described filtration module is connected with described rectification module, for carrying out filtering process to described direct current.
Wherein, in one embodiment of the invention, described filtration module comprises further: the 3rd electric capacity, the positive terminal of described 3rd electric capacity is connected with the negative pole end of the second diode with the negative pole end of described first diode respectively, and the negative pole end of described 3rd electric capacity is connected with the centre cap of the secondary coil of described transformer; Filter inductance, one end of described filter inductance is connected with the positive terminal of described 3rd electric capacity; 4th electric capacity, the positive terminal of described 4th electric capacity is connected with the other end of described filter inductance, and the negative pole end of described 4th electric capacity is connected with the negative pole end of described 3rd electric capacity.
In one embodiment of the invention, described charging device also comprises: the first photodiode and the second photodiode, described first photodiode is connected with described first driver element, described second photodiode is connected with described second driver element, and described first photodiode and the second photodiode are for receiving described control signal.
In one particular embodiment of the present invention, described transformer is ferrite transformer.
The aspect that the present invention adds 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
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the block diagram of the charging device according to the embodiment of the present invention; And
Fig. 2 is the circuit diagram of charging device according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment 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 embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments 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 letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment 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 property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
The charging device proposed according to the embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the block diagram of the charging device according to the embodiment of the present invention.As shown in Figure 1, this charging device comprises AC-AC modular converter 10, resonant capacitance C0 and transformer B0, rectification module 20 and sampling control module 30.
Wherein, AC-AC modular converter 10 comprises the first switching tube K1, second switch pipe K2, the first driver element 101 and the second driver element 102, first switching tube K1 is connected with the first driver element 101, second switch pipe K2 is connected with the second driver element 102, and AC-AC modular converter 10 is for converting the electric main AC of input to the alternating current of predeterminated frequency and said high-frequency alternating current.
As shown in Figure 1, resonant capacitance C0 is in parallel with the primary coil L2 of transformer B0, one end of resonant capacitance C0 is connected with the first switching tube K1 respectively with one end of the primary coil L2 of transformer, and the other end of resonant capacitance C0 is connected with second switch pipe K2 respectively with the other end of the primary coil L2 of described transformer.
In an embodiment of the present invention, rectification module 20 is connected with transformer B0, for converting the predeterminated frequency alternating current after transformer B0 transformation to direct current.Sampling control module 30 is connected with the second driver element 102 with the two ends of resonant capacitance C0, rectification module 20, first driver element 101 respectively, the d. c. voltage signal that sampling control module 30 exports according to the voltage signal at the described resonant capacitance two ends of sampling and rectification module 20 generates control signal, and described control signal generates drive singal to control the first switching tube K1 and second switch pipe K2 after the first driver element 101 and the second driver element 102 amplify.
In one embodiment of the invention, as shown in Figure 1, above-mentioned charging device also comprises even module 40, and even module 40 is connected with second switch pipe K2 with the first switching tube K1 respectively, for the electric main of input and the first switching tube K1 and second switch pipe K2 are carried out electromagnetic isolation.
Further, as shown in Figure 2, even module 40 comprises the first electric capacity C1, common mode inductance L0 and the second electric capacity C2.Wherein, the two ends of the first electric capacity C1 are connected respectively with two inputs of electric main AC, common mode inductance L0 comprises the first coil a and the second coil b, and one end of the first coil a is connected with one end of the first electric capacity C1, and one end of the second coil b is connected with the other end of the first electric capacity C1.One end of second electric capacity C2 is connected with the other end of the first coil a, and the other end of the second electric capacity C2 is connected with the other end of the second coil b.
This effect of even module 40 be the electric main of input is carried out high-frequency electromagnetic by it and internal switch pipe K1 and K2 isolate with preventing pollution external power grid, namely carry out inside and outside isolation.
Further, as shown in Figure 2, the source electrode s1 of the first switching tube K1 is connected with one end of the second electric capacity C2, and the grid g1 of the first switching tube K1 is connected with the first driver element 101, and the drain electrode d1 of the first switching tube K1 is connected with one end of resonant capacitance C0; The source electrode s2 of second switch pipe K2 is connected with the other end of the second electric capacity C2, and the grid g2 of second switch pipe K2 is connected with the second driver element 102, and the drain electrode d2 of second switch pipe K2 is connected with the other end of resonant capacitance C0.
In an embodiment of the present invention, the positive half cycle AC signal being input to this circuit is carried out high frequency modulated by the first switching tube K1 in AC-AC modular converter 10 and second switch pipe K2, the alternating current of low frequency is modulated into the alternating current of high frequency.Sampling control module 30 gathers voltage signal from the two ends of the output of rectification module 20, resonant capacitance C0, and convert this signal to control signal, wherein sampling control module 30 is that the size of direct voltage exported according to rectification module 20 produces PWM(pulse-width modulation) signal and the frequency of control signal, the size of pulse duration, this control signal controlled conducting and the closedown of the first switching tube K1 and second switch pipe K2 afterwards through the overdrive circuit i.e. amplification of the first driver element 101 and the second driver element 102.
In one particular embodiment of the present invention, transformer B0 is ferrite transformer, is high frequency transformer.Wherein, volume, the weight of transformer are relevant with frequency, and transmit the transformer of equal-wattage, frequency its volume higher is less.In order to reduce the volume of transformer, improving transformer efficiency, just must improve by the frequency of the electric current of transformation.Therefore, in an embodiment of the present invention, the existing alternating current alternating current of low frequency being modulated into high frequency of AC-AC modular converter, and be directly convert low-frequency ac to high-frequency ac when not carrying out rectification.
That is, when electric main AC is when upper half (on just lower negative), electric current gets back to negative pole through common mode inductance L0-ac filter first electric capacity C1 again through the primary coil L2-second switch pipe K2-of common mode inductance L0-second electric capacity C2 filtering-the first switching tube K1-resonant capacitance C0-transformer B0.When electric current flows through K1, no matter whether K1 closes, and electric current all can be passed through by the fly-wheel diode of K1 inside, but the fly-wheel diode of its inside is that reversal connection ends when electric current flows to K2.The electric current in whole loop all can the conducting in K2 conduction period, K2 cut-off and ending.Due to mains frequency lower (50-60Hz), the frequency of thus control K2 conducting, cut-off wants the pulse KHz up to a hundred of high such as control signal.In like manner, when the direction of low-frequency ac civil power is upper negative lower timing, the control frequency of whole circuit is constant, controls whole circuit turn-on and cut-off by K1.Like this, regardless of the conducting direction being low frequency ac, always have a switching tube and come the conducting of control circuit high speed and cut-off, thus form alternating current and the high-frequency alternating current of predeterminated frequency.And this electric energy being conducted by transformer by during transformer B0.
Wherein, it should be noted that, the conducting of the first switching tube K1 and second switch pipe K2 is opened requirement.Because the primary coil L2 of resonant capacitance C0 and transformer B0 forms resonant relationship.When a certain switching tube is transformed into closedown by conducting, equivalent mutual inductance value due to inductance L 2(transformer) storage effect, namely switching tube conduction period its On current be the i electric energy be stored in inductance L 2 be (L2*i*i)/2, this energy will discharge when switching tube is closed, resonant capacitance C0 raises U owing to absorbing voltage after this energy C0U*U/2, namely C0 and L2 forms resonance, and each concussion electric current flows through transformer and all can pass to secondary output by part energy by magnetic field.Conducting when switching tube one fixes on C0, L2 resonance negative potential, this potential voltage collection has been sampled by sampling control module 30.
In sum, the charging device that the embodiment of the present invention proposes, by obstructed for low-frequency ac civil power over commutation, is directly undertaken being modulated into high-frequency alternating current by switching tube.Following description, charging device not required power factor correcting circuit and the pfc circuit of the embodiment of the present invention, and its power factor is close to 1.
From the above, no matter low frequency ac is at positive half cycle or negative half period, as long as the conducting junction voltage Ud1s1(that the voltage magnitude of this low frequency ac is greater than K1 or K2 is generally about 1.8V) and diode forward conduction voltage 0.7V, just can ensure the current flowing of whole circuit.Now, circuit turn-on pressure drop is 1.8V+0.7V=2.5V.If assuming that input voltage amplitude is 220*1.414=311.1V, then now power factor is 1-2.5/311.1=0.991964, can find out that, when the 220V alternating current of the standard of input, the power factor of this circuit is close to 1 by above formula.Thus, can find out that the conduction voltage drop of the input of this power factor and this circuit have direct relation by calculating above, the more high-power factor of conduction voltage drop is less, therefore to select withstand voltage height when selector switch pipe as far as possible, switching frequency is high, conducting time the electric conduction pipe that forces down.In sum, charging device of the present invention does not need special circuit of power factor correction and pfc circuit, and its power factor is close to 1.
And after traditional switched charge circuit has to pass through AC-DC AC-DC, again through circuit of power factor correction and pfc circuit, and then through direct current is transformed into high-frequency ac DC-AC process, after eventually passing high frequency transformer, high-frequency current is rectified into direct current (i.e. AC-DC) again.Charging device of the present invention is then switched through by alternating-current direct to become high-frequency ac and AC-AC conversion, then this high-frequency ac is made into direct current by carrying out rectification after high frequency transformer.No longer need first low frequency ac AC to be made into direct current DC and AC-DC process, also not required power factor correcting circuit and pfc circuit.Owing to decreasing two energy flux links, therefore charging device structure of the present invention is simple, efficiency is high.
In one embodiment of the invention, as shown in Figure 2, rectification module 20 comprises the first diode D1 and the second diode D2 further.Wherein, the positive terminal of the first diode D1 is connected with one end of the secondary coil L3 of transformer B0, the positive terminal of the second diode D2 is connected with the other end of the secondary coil L3 of transformer B0, and the negative pole end of the second diode D2 is connected with the negative pole end of the first diode D1.
Further, sampling control module 30 comprises controlling of sampling unit 301, current-limiting resistance R1 and light-emitting diode D0 further.
Wherein, controlling of sampling unit 301 comprises the first sampling end A, the second sampling end B, the 3rd sampling end C, the 4th sampling end D and control signal output E, first sampling end A is connected with the negative pole end of the second diode D2 with the negative pole end of the first diode D1 respectively, second sampling end B is connected with the centre cap O of the secondary coil L3 of transformer B, 3rd sampling end C is connected with one end of resonant capacitance C0, and the 4th sampling end D is connected with the other end of resonant capacitance C0.One end of current-limiting resistance R1 is connected with control signal output E, and the positive terminal of light-emitting diode D0 is connected with the other end of current-limiting resistance R1, the negative pole end ground connection (i.e. the negative pole of sampling control module) of light-emitting diode D0.
In the present embodiment, as shown in Figure 2, above-mentioned charging device also comprises filtration module 50, and filtration module 50 is connected with rectification module 20, for carrying out filtering process to described direct current.Because rectification module 20 converts high-frequency alternating current to Rectified alternating current, therefore, also need to export this direct current filtering process.
As shown in Figure 2, filtration module 50 comprises the 3rd electric capacity C3, filter inductance L1 and the 4th electric capacity C4 further.Wherein, the positive terminal of the 3rd electric capacity C3 is connected with the negative pole end of the second diode D2 with the negative pole end of the first diode D1 respectively, the negative pole end of the 3rd electric capacity C3 is connected with the centre cap O of the secondary coil L3 of transformer B, one end of filter inductance L1 is connected with the positive terminal of the 3rd electric capacity C3, the positive terminal of the 4th electric capacity C4 is connected with the other end of filter inductance L1, and the negative pole end of the 4th electric capacity C4 is connected with the negative pole end of the 3rd electric capacity C3.
In addition, in an embodiment of the present invention, as shown in Figure 2, above-mentioned charging device also comprises the first photodiode D3 and the second photodiode D4, first photodiode D3 is connected with the first driver element 101, second photodiode D4 is connected with the second driver element 102, the control signal CP that the first photodiode D3 and the second photodiode D4 exports for receiving controlling of sampling unit 301.
Wherein, it should be noted that, the controlling of sampling unit 301 in the charging device of the embodiment of the present invention can utilize chip microcontroller, also can realize with hardware circuit.
In an embodiment of the present invention, the height of the voltage of the pulsating direct current DC that controlling of sampling unit 301 exports according to rectification module 20, and the height of current potential according to resonant capacitance C0, export real-time PWM(duty ratio adjustable) waveform, the signal of telecommunication is become light signal through current-limiting resistance R1, light-emitting diode D0 and is become the PWM signal of telecommunication (this process mainly passes through Phototube Coupling) by photodiode D3, D4 reception by this PWM waveform, and this signal amplifies rear drive switching tube K1, K2 through the shaping of the first driver element 101 and the second driver element 102.Although photodiode D1, D2 receive the waveform that D0 passes over simultaneously, control K1, K2 action simultaneously (switch conduction, cut-off) simultaneously, this controls its high frequency for the positive half cycle of low frequency ac by K2 and produces, due to afterflow diode effect in K1 pipe, the conducting of K1 with close for positive half cycle alternating current without impact, in like manner, the conducting of K2 produces high-frequency alternating current also without affecting with closedown to the negative half period of low frequency ac.
According to the charging device of the embodiment of the present invention, by AC-AC modular converter, the electric main of input is directly changed into high-frequency alternating current, then after high frequency transformer, by rectification module, this high-frequency ac is carried out rectification again, the alternating current of input decreases an AC-DC rectifying conversion link and power factor correction PFC link, thus decrease the intermediate links of current energy, and double switch pipe controls by a road control circuit.Therefore, this charging device circuit structure is simple, and conversion efficiency is high, and it is flexible to export direct current Serial regulation, and the precision of voltage regulation is high.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment 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 embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (8)
1. a charging device, is characterized in that, comprising:
AC-AC modular converter, described AC-AC modular converter comprises the first switching tube, second switch pipe, the first driver element and the second driver element, described first switching tube is connected with described first driver element, described second switch pipe is connected with described second driver element, and described AC-AC modular converter is used for the high-frequency alternating current electric main of input being converted to predeterminated frequency;
Resonant capacitance and transformer, the parallel connection of primary windings of described resonant capacitance and described transformer, one end of described resonant capacitance is connected with described first switching tube respectively with one end of the primary coil of described transformer, the other end of described resonant capacitance is connected with described second switch pipe respectively with the other end of the primary coil of described transformer, wherein, described transformer is ferrite transformer;
Rectification module, described rectification module is connected with described transformer, for converting the high-frequency alternating current of the predeterminated frequency after described transformer transformation to direct current;
Sampling control module, described sampling control module is connected with the second driver element with the two ends of described resonant capacitance, described rectification module, the first driver element respectively, the d. c. voltage signal that described sampling control module exports according to the voltage signal at the described resonant capacitance two ends of sampling and described rectification module generates control signal, and described control signal generates drive singal to control described first switching tube and second switch pipe after described first driver element and the second driver element amplify;
Even module, described even module is connected with second switch pipe with described first switching tube respectively, for the electric main of described input and described first switching tube and second switch pipe are carried out electromagnetic isolation.
2. charging device as claimed in claim 1, it is characterized in that, described even module comprises further:
First electric capacity, the two ends of described first electric capacity are connected respectively with two inputs of described electric main;
Common mode inductance, described common mode inductance comprises the first coil and the second coil, and one end of described first coil is connected with one end of described first electric capacity, and one end of described second coil is connected with the other end of described first electric capacity;
Second electric capacity, one end of described second electric capacity is connected with the other end of described first coil, and the other end of described second electric capacity is connected with the other end of described second coil.
3. charging device as claimed in claim 2, is characterized in that,
The source electrode of described first switching tube is connected with one end of described second electric capacity, and the grid of described first switching tube is connected with described first driver element, and the drain electrode of described first switching tube is connected with one end of described resonant capacitance;
The source electrode of described second switch pipe is connected with the other end of described second electric capacity, and the grid of described second switch pipe is connected with described second driver element, and the drain electrode of described second switch pipe is connected with the other end of described resonant capacitance.
4. charging device as claimed in claim 1, it is characterized in that, described rectification module comprises further:
First diode, the positive terminal of described first diode is connected with one end of the secondary coil of described transformer;
Second diode, the positive terminal of described second diode is connected with the other end of the secondary coil of described transformer, and the negative pole end of described second diode is connected with the negative pole end of described first diode.
5. charging device as claimed in claim 4, it is characterized in that, described sampling control module comprises further:
Controlling of sampling unit, described controlling of sampling unit comprises the first sampling end, the second sampling end, the 3rd sampling end, the 4th sampling end and control signal output, wherein, the negative pole end of described first diode is connected with described first sampling end with the interconnective tie point of the negative pole end of the second diode, described second sampling end is connected with the centre cap of the secondary coil of described transformer, described 3rd sampling end is connected with one end of described resonant capacitance, and described 4th sampling end is connected with the other end of described resonant capacitance;
Current-limiting resistance, one end of described current-limiting resistance is connected with described control signal output;
Light-emitting diode, the positive terminal of described light-emitting diode is connected with the other end of described current-limiting resistance, the negative pole end ground connection of described light-emitting diode.
6. charging device as claimed in claim 5, is characterized in that, also comprise:
Filtration module, described filtration module is connected with described rectification module, for carrying out filtering process to described direct current.
7. charging device as claimed in claim 6, it is characterized in that, described filtration module comprises further:
3rd electric capacity, wherein, the negative pole end of described first diode is connected with the positive terminal of the interconnective tie point of the negative pole end of the second diode with described 3rd electric capacity, and the negative pole end of described 3rd electric capacity is connected with the centre cap of the secondary coil of described transformer;
Filter inductance, one end of described filter inductance is connected with the positive terminal of described 3rd electric capacity;
4th electric capacity, the positive terminal of described 4th electric capacity is connected with the other end of described filter inductance, and the negative pole end of described 4th electric capacity is connected with the negative pole end of described 3rd electric capacity.
8. the charging device as described in any one of claim 1-7, is characterized in that, also comprises:
First photodiode and the second photodiode, described first photodiode is connected with described first driver element, described second photodiode is connected with described second driver element, and described first photodiode and the second photodiode are for receiving described control signal.
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| CN201310158413.8A CN103208849B (en) | 2013-04-28 | 2013-04-28 | A kind of charging device |
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| CN201310158413.8A CN103208849B (en) | 2013-04-28 | 2013-04-28 | A kind of charging device |
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| CN103208849B true CN103208849B (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107027210B (en) * | 2016-02-01 | 2018-10-26 | 华润矽威科技（上海）有限公司 | A kind of LED control circuit and method |
| CN112583090B (en) * | 2019-09-29 | 2023-03-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583089B (en) * | 2019-09-29 | 2023-03-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583095B (en) * | 2019-09-29 | 2023-03-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583061B (en) * | 2019-09-29 | 2023-03-24 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583094B (en) * | 2019-09-29 | 2023-03-24 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583091B (en) * | 2019-09-29 | 2023-03-24 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112572186B (en) * | 2019-09-29 | 2023-07-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583096B (en) * | 2019-09-29 | 2023-03-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| CN112583093B (en) * | 2019-09-29 | 2023-03-14 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle with same |
| WO2022022586A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市中孚能电气设备有限公司 | Bidirectional wireless charging apparatus, bidirectional wireless charging control method, and bidirectional charging headlight |
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| CN1520018A (en) * | 2003-01-29 | 2004-08-11 | �����ɷ� | Current/voltage converter |
| CN2840508Y (en) * | 2005-06-29 | 2006-11-22 | 闫克平 | High frequency high voltage DC power supply for electric dust-cleaner |
| CN101232753A (en) * | 2008-01-18 | 2008-07-30 | 佛山市顺德区瑞德电子实业有限公司 | Electromagnetic stove quasi-resonance soft switch high-frequency converter |
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| JP2001275252A (en) * | 2000-03-28 | 2001-10-05 | Casio Comput Co Ltd | Charging device |
| CN201708571U (en) * | 2009-02-22 | 2011-01-12 | 陈兴仲 | Storage battery charger |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520018A (en) * | 2003-01-29 | 2004-08-11 | �����ɷ� | Current/voltage converter |
| CN2840508Y (en) * | 2005-06-29 | 2006-11-22 | 闫克平 | High frequency high voltage DC power supply for electric dust-cleaner |
| CN101232753A (en) * | 2008-01-18 | 2008-07-30 | 佛山市顺德区瑞德电子实业有限公司 | Electromagnetic stove quasi-resonance soft switch high-frequency converter |
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