CN207200581U - Energy feedback circuit and device applied to power source aging system - Google Patents
Energy feedback circuit and device applied to power source aging system Download PDFInfo
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- CN207200581U CN207200581U CN201721264242.7U CN201721264242U CN207200581U CN 207200581 U CN207200581 U CN 207200581U CN 201721264242 U CN201721264242 U CN 201721264242U CN 207200581 U CN207200581 U CN 207200581U
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Abstract
The utility model provides a kind of energy feedback circuit and device applied to power source aging system, and the circuit includes：Power circuit, for conveying initial DC electric current for control circuit；The input of control circuit and the output end of power circuit are connected, and the output end of control circuit is connected with push-pull circuit, wherein, control circuit is used to be amplified processing to the initial DC electric current of power circuit conveying, generates the square-wave pulse signal of phase mutual deviation 180 degree；Push-pull circuit, the square-wave pulse signal for the phase mutual deviation 180 degree to control circuit output responds, and to obtain target positive voltage, and target positive voltage is fed back into power circuit.Power circuit is fed back to after electric current (or voltage) rise that the energy feedback circuit can export power circuit, so that the electric energy in power source aging system fully rationally utilizes, the waste of energy is avoided, alleviates the technical problem that energy feedback can not be carried out in power source aging system of the prior art.
Description
Technical field
Energy feedback field of circuit technology is the utility model is related to, more particularly, to a kind of applied to power source aging system
Energy feedback circuit and device.
Background technology
Power source aging refers to that under high temperature, high mal-condition test environment carries out long-time burning to High performance electronics
Machine, to improve Product Safety, stability and the technological process of production of reliability.And for DC-DC power module, DC-
The probability that preceding tens hours of DC power module go wrong is bigger.Continue band power work so can be powered up before dispatching from the factory in factory
Make.
It is the output end connection resistance in DC-DC power module in the prior art so that resistance consumption DC-DC power module
The power of output, the waste of energy can be so caused, meanwhile, to adapt to the DC-DC power module of different voltages, power grade
It is required that, it is necessary to lay in a large amount of different capacities, resistance resistance in case of need.And resistance works in high temperature environments for a long time,
It is very big to damage ratio.
Being badly in need of a kind of circuit for this can rationally utilize the electric energy that DC-DC power module exports, electricity of the prior art
Source ageing system is also without a kind of circuit that can realize energy feedback.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of energy feedback circuit applied to power source aging system
And device, to alleviate the technical problem that energy feedback can not be realized in power source aging system in the prior art.
In a first aspect, the utility model embodiment provides a kind of energy feedback circuit applied to power source aging system,
Including：Power circuit, control circuit and push-pull circuit；
The power circuit, for conveying initial DC electric current for the control circuit；
The input of the control circuit is connected with the output end of the power circuit, the output end of the control circuit with
The push-pull circuit connection, wherein, the control circuit is used to put the initial DC electric current of power circuit conveying
Big processing, generate the square-wave pulse signal of phase mutual deviation 180 degree；
The push-pull circuit, the square-wave pulse signal for the phase mutual deviation 180 degree to the control circuit output
Responded, to obtain target positive voltage, and the target positive voltage is fed back into the power circuit.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, the power circuit includes：Power supply, the first diode, the first electric capacity and DC-DC power module；
First output end of the power supply is connected with the anode of first diode, the moon of first diode
The first end with first electric capacity, the first input end of the DC-DC power module connect respectively for pole, the power supply
The second end with first electric capacity, the second input connection of the DC-DC power module are described respectively for second output end
The input of DC-DC power module is also connected by first electric capacity with the output end of the push-pull circuit, the DC-DC electricity
Second output head grounding of source module, wherein,
The power supply, for being powered for the DC-DC power module；
First electric capacity, for receiving the electric energy of the power supply conveying, and stored；And described first
Electric capacity is additionally operable to receive the target positive voltage of the push-pull circuit feedback, and the energy of target positive voltage conveying is entered
Row storage, think the DC-DC power module power supply；
First diode, for when the power supply breaks down, controlling the institute of the push-pull circuit conveying
Target positive voltage is stated not filled to the power supply is counter.
With reference in a first aspect, the utility model embodiment provides second of possible embodiment of first aspect, its
In, the control circuit includes：Sample circuit and digital control circuit；
The sample circuit is connected with the first output end of the DC-DC power module, for gathering the DC-DC power source
The initial DC electric current of module conveying；
The digital control circuit is connected with the sample circuit, for receiving the described initial of the sample circuit conveying
DC current, and processing is amplified to the initial DC electric current, generate the square-wave pulse signal of phase mutual deviation 180 degree.
With reference in a first aspect, the utility model embodiment provides the third possible embodiment of first aspect, its
In, the sample circuit includes：Resistance and current sampling circuit；
The first end of the resistance is connected with the first output end of the DC-DC power module；
The current sampling circuit is connected with the both ends of the resistance, wherein, the current sampling circuit, which is used to gather, to flow
The initial DC electric current through the resistance.
With reference in a first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect, its
In, the digital control circuit includes：Current amplification circuit, digit chip and drive circuit；
The current amplification circuit is connected with the current sampling circuit, for the institute gathered to the current sampling circuit
State initial DC electric current and be amplified processing, the electric current after being amplified；
The digit chip is connected with the current amplification circuit, for receiving described in the current amplification circuit conveying
Electric current after amplification, and the electric current after the amplification is analyzed, electric current after analysis obtains the amplification is less than default
During current value, the dutycycle of the square-wave pulse signal of increase output mutual deviation 180 degree；
The drive circuit is connected with the digit chip, the mutual deviation 180 degree transmitted for receiving the digit chip
Square-wave pulse signal, and drive the push-pull circuit to work according to the square-wave pulse signal of the mutual deviation 180 degree, wherein, it is described
The square-wave pulse signal of mutual deviation 180 degree includes first via square-wave pulse signal and the second road square-wave pulse signal.
With reference in a first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect, its
In, the push-pull circuit includes：First mos field-effect transistors, the 2nd mos field-effect transistors, transformer and rectifying and wave-filtering
Circuit, wherein, the transformer includes the armature winding and two secondary windings connected of two series connection；
The grid of the first mos field-effect transistors is connected with the drive circuit, the first mos field effect transistors
The drain electrode of pipe is connected with the first not common end of the armature winding of the transformer, the source of the first mos field-effect transistors
Pole is grounded, and the first mos field-effect transistors are used to turn under the control of the first via square-wave pulse signal, with to institute
State the armature winding conveying first via square wave current signal of transformer；
The grid of the 2nd mos field-effect transistors is connected with the drive circuit, the 2nd mos field effect transistors
The drain electrode of pipe is connected with the second not common end of the armature winding of the transformer, the source of the 2nd mos field-effect transistors
Pole is grounded, and the 2nd mos field-effect transistors are used to turn under the control of second road square-wave pulse signal, with to institute
The armature winding for stating transformer conveys the second tunnel square wave current signal；
The common port of the armature winding of the transformer connects the second end of the resistance, and the transformer is used for by described in
The first via square wave current signal of first mos field-effect transistors conveying carries out power conversion, obtains first voltage square wave,
And second tunnel square wave current signal of the 2nd mos field-effect transistors conveying is subjected to power conversion, obtain the
Two voltage square waves；
The current rectifying and wave filtering circuit is connected with the secondary windings of the transformer, for by the first voltage square wave and institute
State second voltage square wave and carry out rectifying and wave-filtering processing, obtain the target positive voltage.
With reference in a first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, its
In, the current rectifying and wave filtering circuit includes：Second diode, the 3rd diode, filter circuit, wherein, the filter circuit includes
Inductance and the second electric capacity；
The anode of second diode is connected with the first not common end of the secondary windings of the transformer, and described second
The negative electrode of diode is connected with the first end of the inductance, and second diode is used for whole to first voltage square wave progress
Stream, obtains the first positive voltage square wave；
The anode of 3rd diode is connected with the second not common end of the secondary windings of the transformer, and the described 3rd
The negative electrode of diode is connected with the first end of the inductance, and the 3rd diode is used for whole to second voltage square wave progress
Stream, obtains the second positive voltage square wave；
Second end of the inductance is connected with the first end of second electric capacity, the second end of second electric capacity with it is described
The common port connection of the secondary windings of transformer, the filter circuit, for the first positive voltage square wave and described second
Positive voltage square wave is filtered processing, obtains target positive voltage, and the target positive voltage is fed back into the power circuit.
With reference in a first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect, its
In, the energy feedback circuit also includes：3rd electric capacity and the 4th electric capacity；
3rd electric capacity is in parallel with second electric capacity, for storing the energy of the target positive voltage conveying；
The first end of 4th electric capacity is connected with the second end of the resistance, the second end ground connection of the 4th electric capacity,
4th electric capacity is used to be filtered the pulsating current for flowing through the resistance, removes the pulsating current in the resistance.
With reference in a first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect, its
In,
The digit chip is also connected with host computer, the default electricity set for receiving user by the host computer
Flow valuve.
Second aspect, the utility model embodiment additionally provide a kind of energy feedback applied to power source aging system and filled
Put, including：The energy feedback circuit and shell applied to power source aging system described in above-mentioned first aspect, wherein, it is described
Energy feedback circuit applied to power source aging system is arranged at the inside of the shell.
The utility model embodiment brings following beneficial effect：The utility model embodiment provides a kind of applied to electricity
The energy feedback circuit of source ageing system, the circuit include：Power circuit, control circuit and push-pull circuit；Wherein, power supply electricity
Road, for conveying initial DC electric current for control circuit；The input of control circuit and the output end of power circuit connect, control
The output end of circuit is connected with push-pull circuit, wherein, control circuit is used to carry out the initial DC electric current of power circuit conveying
Enhanced processing, generate the square-wave pulse signal of phase mutual deviation 180 degree；Push-pull circuit, it is mutual for the phase to control circuit output
The square-wave pulse signal of poor 180 degree is responded, and to obtain target positive voltage, and target positive voltage is fed back into power circuit.
In the prior art, energy feedback can not be realized in power source aging system.With the power source aging system phase of prior art
Than the energy feedback circuit applied to power source aging system in the utility model can be defeated to power circuit by control circuit
The initial DC electric current sent is amplified processing, then generates the square-wave pulse signal of phase mutual deviation 180 degree, and then push-pull circuit
The square-wave pulse signal of phase mutual deviation 180 degree is responded, obtains target positive voltage, last push-pull circuit is by target positive voltage
Power circuit is fed back to, feeds back to power supply after electric current (or voltage) rise that the energy feedback circuit can export power circuit
Circuit so that the electric energy in power source aging system fully rationally utilizes, and avoids the waste of energy, alleviates of the prior art
The technical problem for being capable of feedback can not be realized in power source aging system.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of entirety for energy feedback circuit applied to power source aging system that the utility model embodiment provides
Structural representation；
Fig. 2 is a kind of the specific of energy feedback circuit applied to power source aging system that the utility model embodiment provides
Structural representation；
Fig. 3 is the structural representation for the control circuit that the utility model embodiment provides；
Fig. 4 is the structural representation for the push-pull circuit that the utility model embodiment provides.
Icon：
11- power circuits；12- control circuits；13- push-pull circuits；121- sample circuits；122- digital control circuits；
131- current rectifying and wave filtering circuits.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
For ease of understanding the present embodiment, power supply is applied to one kind disclosed in the utility model embodiment first
The energy feedback circuit of ageing system describes in detail.
A kind of energy feedback circuit applied to power source aging system, with reference to figure 1, the circuit includes：Power circuit 11, control
Circuit 12 and push-pull circuit 13 processed；
Power circuit, for conveying initial DC electric current for control circuit；
The input of control circuit and the output end of power circuit connect, and output end and the push-pull circuit of control circuit connect
Connect, wherein, control circuit is used to be amplified the initial DC electric current of power circuit conveying processing, generation phase mutual deviation 180
The square-wave pulse signal of degree；
Push-pull circuit, the square-wave pulse signal for the phase mutual deviation 180 degree to control circuit output respond, with
Power circuit is fed back to target positive voltage, and by target positive voltage.
In the utility model embodiment, the initial DC electric current very little of power circuit conveying, electricity can not be directly applied to
, it is necessary to carry out a series of processing in source circuit, target positive voltage is obtained, to meet the needs of power circuit, the utility model
In the design of control circuit and push-pull circuit be exactly to handle initial DC electric current.
Specifically, with reference to figure 1, the input of control circuit and the input of power circuit connect, the output of control circuit
End is connected with push-pull circuit, and the initial DC electric current that control circuit can convey to power circuit is amplified processing, and generates
The square-wave pulse signal of phase mutual deviation 180 degree.
And then push-pull circuit responds to the square-wave pulse signal of phase mutual deviation 180 degree, to obtain target positive voltage,
And then target positive voltage is fed back into power circuit.
In the prior art, energy feedback can not be realized in power source aging system.With the power source aging system phase of prior art
Than the energy feedback circuit applied to power source aging system in the utility model can be defeated to power circuit by control circuit
The initial DC electric current sent is amplified processing, then generates the square-wave pulse signal of phase mutual deviation 180 degree, and then push-pull circuit
The square-wave pulse signal of phase mutual deviation 180 degree is responded, obtains target positive voltage, last push-pull circuit is by target positive voltage
Power circuit is fed back to, feeds back to power supply after electric current (or voltage) rise that the energy feedback circuit can export power circuit
Circuit so that the electric energy in power source aging system fully rationally utilizes, and avoids the waste of energy, alleviates of the prior art
The technical problem for being capable of feedback can not be realized in power source aging system.
The above has carried out overall description to the energy feedback circuit applied to power source aging system, below to applied to
The energy feedback circuit of power source aging system describes in detail.
In the utility model embodiment, with reference to figure 2, if without specified otherwise, for the device of both ends connection, first end
Referring to the left end of the device, the second end refers to the right-hand member of the device, and for the device of four ends connection, two connection ends on the left side
For input, two connection ends on the right are output end, in addition, in input, the connecting line of top is first input end, under
The connecting line on side is the second input, and in output end, the connecting line of top is the first output end, and following connecting line is second
Output end.
Further, include with reference to figure 2, power circuit 11：Power supply, the first diode VD1, the first electric capacity C1 and
DC-DC power module；
First output end of power supply is connected with the first diode VD1 anode, the first diode VD1 negative electrode difference
With the first electric capacity C1 first end, the first input end of DC-DC power module connects, the second output end of power supply respectively with
First electric capacity C1 the second end, the second input connection of DC-DC power module, the input of DC-DC power module also pass through
First electric capacity C1 is connected with the output end of push-pull circuit 13, the second output head grounding of DC-DC power module, wherein,
Power supply, for being powered for DC-DC power module；
First electric capacity C1, for receiving the electric energy of power supply conveying, and stored；And first electric capacity C1 also use
Stored in the target positive voltage for receiving the feedback of push-pull circuit 13, and to the energy of target positive voltage conveying, think DC-DC electricity
Source module is powered；
First diode VD1, for the target positive voltage that when power supply breaks down, control push-pull circuit 13 conveys
Do not filled to power supply is counter.
In a power, the first electric capacity C1 is storage capacitor, can not only store the electric energy of power supply conveying, moreover it is possible to
Enough store the energy of the target positive voltage of push-pull circuit conveying.
In addition, inventor considers that the target that push-pull circuit 13 feeds back is just when power supply breaks down (or abnormal)
Voltage counter may be filled and entered in power supply, can form anti-sink current.In order to prevent that it is anti-that target positive electricity from pressing to power supply
Sink current, inventor are provided with the first diode VD1 between the output end of power supply and push-pull circuit 13, and specific connection is closed
System is entered in power supply so that circuit is safer with reference to figure 2 this makes it possible to effectively avoid target positive voltage.
When 13 feedback target positive voltage of push-pull circuit, voltage raises on the first electric capacity C1, and flows through the first diode VD1
Electric current diminish.
Further, referring to figs. 2 and 3 (device included in control circuit 12 is merely illustrated in Fig. 3), control circuit
12 include：Sample circuit 121 and digital control circuit 122；
Sample circuit 121 is connected with the first output end of DC-DC power module, for gathering DC-DC power module conveying
Initial DC electric current；
Digital control circuit 122 is connected with sample circuit 121, for receiving the initial DC electricity of the conveying of sample circuit 121
Stream, and processing is amplified to initial DC electric current, generate the square-wave pulse signal of phase mutual deviation 180 degree.
Further, sample circuit 121 includes：Resistance R and current sampling circuit；
Resistance R first end and the first output end of DC-DC power module connect；
The both ends of current sampling circuit and resistance connect, wherein, current sampling circuit, which is used to gather, flows through the initial of resistance
DC current.
In above-mentioned attachment structure, resistance R can receive the initial DC electric current of DC-DC power module output, initial
During DC current flows through resistance R, current sampling circuit can gather the initial DC electric current for flowing through resistance.
Further, referring to figs. 2 and 3 digital control circuit 122 includes：Current amplification circuit, digit chip and driving
Circuit；
Current amplification circuit is connected with current sampling circuit, and the initial DC electric current for being gathered to current sampling circuit enters
Row enhanced processing, the electric current after being amplified；
Digit chip is connected with current amplification circuit, the electric current after amplification for receiving current amplification circuit conveying, and
Electric current after amplification is analyzed, when the electric current after analysis is amplified is less than pre-set current value, increase output mutual deviation 180
The dutycycle of the square-wave pulse signal of degree；
Drive circuit is connected with digit chip, the square-wave pulse signal of the mutual deviation 180 degree for receiving digit chip transmission,
And push-pull circuit work is driven according to the square-wave pulse signal of mutual deviation 180 degree, wherein, the square-wave pulse signal bag of mutual deviation 180 degree
Include first via square-wave pulse signal and the second road square-wave pulse signal.
In the utility model embodiment, current amplification circuit is first to the initial DC electric current of current sampling circuit collection
Processing is amplified, then, after digit chip receives the electric current after the amplification of current amplification circuit conveying, to the electricity after amplification
Stream is analyzed, when the electric current after analysis is amplified is less than pre-set current value, the square-wave pulse of increase output mutual deviation 180 degree
The dutycycle of signal；And when the electric current after analysis is amplified is more than pre-set current value, reduce the square wave of output mutual deviation 180 degree
The dutycycle of pulse signal, wherein, the square wave arteries and veins with the mutual deviation 180 degree for presetting dutycycle is previously stored with digit chip
Rush signal.
After drive circuit receives the square-wave pulse signal of the mutual deviation 180 degree of digit chip transmission, according to the side of mutual deviation 180 degree
Wave pulse signal driving push-pull circuit work.
Further, with reference to figure 2 and Fig. 4 (device included in push-pull circuit 13 is merely illustrated in Fig. 4), push-pull circuit
13 include：First mos field-effect transistor Q1, the 2nd mos field-effect transistor Q2, transformer T and current rectifying and wave filtering circuit 131,
Wherein, transformer T includes the armature winding and two secondary windings connected of two series connection；
First mos field-effect transistors Q1 grid is connected with drive circuit, the first mos field-effect transistors Q1 drain electrode
It is connected with the first not common end of transformer T armature winding, the first mos field-effect transistors Q1 source ground, the first mos
Field-effect transistor Q1 is used to turn under the control of first via square-wave pulse signal, to be conveyed to transformer T armature winding
First via square wave current signal；
2nd mos field-effect transistors Q2 grid is connected with drive circuit, the 2nd mos field-effect transistors Q2 drain electrode
It is connected with the second not common end of transformer T armature winding, the 2nd mos field-effect transistors Q2 source ground, the 2nd mos
Field-effect transistor Q2 is used to turn under the control of the second road square-wave pulse signal, to be conveyed to transformer T armature winding
Second tunnel square wave current signal；
The common port connection resistance R of transformer T armature winding the second end, transformer T are used for the first mos field-effects
The first via square wave current signal of transistor Q1 conveyings carries out power conversion, obtains first voltage square wave, and, by the 2nd mos
Second tunnel square wave current signal of field-effect transistor Q2 conveyings carries out power conversion, obtains second voltage square wave；
Current rectifying and wave filtering circuit is connected with transformer T secondary windings, for by first voltage square wave and second voltage square wave
Rectifying and wave-filtering processing is carried out, obtains target positive voltage.
In the utility model embodiment, the first mos field-effect transistors Q1 receives the first via side of drive circuit conveying
Wave pulse signal, and turned under the control of first via square-wave pulse signal.Wherein, the dutycycle of first via square-wave pulse signal
Bigger, the first mos field-effect transistors Q1 ON time is longer, and the electric current for pulling to obtain from resistance R is also bigger, and then
First via square wave current signal is conveyed to transformer T armature winding.
2nd mos field-effect transistors Q2 receives the second road square-wave pulse signal of drive circuit conveying, and on the second tunnel
Turned under the control of square-wave pulse signal, similarly, the dutycycle of the second road square-wave pulse signal is bigger, and the 2nd mos field-effects are brilliant
Body pipe Q2 ON time is longer, and the electric current for pulling to obtain from resistance R is also bigger, and then to transformer T armature winding
Convey the second tunnel square wave current signal.
It should be noted that the dutycycle of first via square-wave pulse signal and the second road square-wave pulse signal is identical, and phase
Position mutual deviation 180 degree.So the first via square wave current signal of transformer T armature winding opening position and the second road square wave current
Size of current in signal is identical, phase mutual deviation 180 degree.
First via square wave current signal and the second road square wave current letter respectively obtain pair after transformer T power conversions
The first voltage square wave and second voltage square wave answered, the phase mutual deviation 180 degree between the first voltage square wave and second voltage square wave,
And the first voltage square wave and second voltage square wave include positive voltage and negative voltage, in order to be unified just
Voltage is, it is necessary to carry out rectification processing.
Wherein, the * in transformer T represents Same Name of Ends.
Further, include with reference to figure 2 and Fig. 4, current rectifying and wave filtering circuit 131：Second diode VD2, the 3rd diode
VD3, filter circuit, wherein, filter circuit includes inductance L and the second electric capacity C2；
Second diode VD2 anode is connected with the first not common end of transformer T secondary windings, the second diode
VD2 negative electrode is connected with inductance L first end, and the second diode VD2 is used to carry out rectification to first voltage square wave, obtains first
Positive voltage square wave；
3rd diode VD3 anode is connected with the second not common end of transformer T secondary windings, the 3rd diode
VD3 negative electrode is connected with inductance L first end, and the 3rd diode VD3 is used to carry out rectification to second voltage square wave, obtains second
Positive voltage square wave；
Inductance L the second end is connected with the second electric capacity C2 first end, the second electric capacity C2 the second end and transformer T time
The common port connection of level winding, filter circuit, for being filtered processing to the first positive voltage square wave and the second positive voltage square wave,
Target positive voltage is obtained, and target positive voltage is fed back into power circuit.
Specifically, the second diode VD2 carries out rectification to first voltage square wave so that originally has the first of generating positive and negative voltage
Voltage square wave becomes the first positive voltage square wave of only positive voltage；3rd diode VD3 carries out rectification to second voltage square wave, makes
Obtain the second positive voltage square wave that the second voltage square wave with generating positive and negative voltage originally becomes only positive voltage.
And then then by the first positive voltage square wave and the second positive voltage square wave by filter circuit, obtain target positive voltage, should
Target positive voltage is approximately DC voltage, and actual is ripple voltage.Wherein, suppressions of the second electric capacity C2 to high frequency in filter circuit
Making is made good use of.
Further, also include with reference to figure 2, energy feedback circuit：3rd electric capacity C3 and the 4th electric capacity C4；
3rd electric capacity C3 is in parallel with the second electric capacity C2, for storing the energy of target positive voltage conveying；
4th electric capacity C4 first end is connected with resistance R the second end, the 4th electric capacity C4 the second end ground connection, the 4th electric capacity
C4 is used to be filtered the pulsating current for flowing through resistance R, removes the pulsating current in resistance R.
In the utility model embodiment, the 3rd electric capacity C3 is storage capacitor, for storing the energy of target positive voltage conveying
Amount.
In addition, in the case of no 4th electric capacity C4, resistance R actually connects with transformer T, then is flowed from transformer T
Electric current on to resistance R is pulsating current, in order to remove the pulsating current in resistance R, so, inventor is provided with circuit
4th electric capacity C4, i.e. the 4th electric capacity C4 main function are filtering.
Further, digit chip is also connected with host computer and (not showed that in figure), passes through host computer for receiving user
The pre-set current value of setting.
Actual digit chip is dsp chip, and it is not particularly limited the utility model embodiment or other numbers
Word chip.The digit chip can be connected with host computer, the pre-set current value set for receiving user by host computer, use behaviour
It is more convenient to make.
Description more than, the energy feedback circuit that should be applied to power source aging system can be by DC-DC power source
Power supply buses are fed back to after the voltage rise of module output, and cause constant output current by host computer in this course
The value of decision.
The utility model embodiment additionally provides a kind of energy back feed device applied to power source aging system, the device bag
Above-mentioned energy feedback circuit and shell applied to power source aging system is included, wherein, the energy applied to power source aging system returns
Current feed circuit is arranged at the inside of shell.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
For the technical staff in art field in the technical scope that the utility model discloses, it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
- A kind of 1. energy feedback circuit applied to power source aging system, it is characterised in that including：Power circuit, control circuit And push-pull circuit；The power circuit, for conveying initial DC electric current for the control circuit；The input of the control circuit is connected with the output end of the power circuit, the output end of the control circuit with it is described Push-pull circuit connects, wherein, the control circuit is used to be amplified place to the initial DC electric current of power circuit conveying Reason, generate the square-wave pulse signal of phase mutual deviation 180 degree；The push-pull circuit, the square-wave pulse signal for the phase mutual deviation 180 degree to the control circuit output are carried out Response, to obtain target positive voltage, and feeds back to the power circuit by the target positive voltage.
- 2. circuit according to claim 1, it is characterised in that the power circuit includes：Power supply, the one or two pole Pipe, the first electric capacity and DC-DC power module；First output end of the power supply is connected with the anode of first diode, the negative electrode point of first diode Do not connected with the first end of first electric capacity, the first input end of the DC-DC power module, the second of the power supply The second end with first electric capacity, the second input of the DC-DC power module connect output end respectively, the DC-DC The input of power module is also connected by first electric capacity with the output end of the push-pull circuit, the DC-DC power source mould Second output head grounding of block, wherein,The power supply, for being powered for the DC-DC power module；First electric capacity, for receiving the electric energy of the power supply conveying, and stored；And first electric capacity It is additionally operable to receive the target positive voltage of the push-pull circuit feedback, and the energy of target positive voltage conveying is deposited Storage, think the DC-DC power module power supply；First diode, for when the power supply breaks down, controlling the mesh of the push-pull circuit conveying Mark positive voltage is not filled to the power supply is counter.
- 3. circuit according to claim 2, it is characterised in that the control circuit includes：Sample circuit and digital control Circuit；The sample circuit is connected with the first output end of the DC-DC power module, for gathering the DC-DC power module The initial DC electric current of conveying；The digital control circuit is connected with the sample circuit, for receiving the initial DC of the sample circuit conveying Electric current, and processing is amplified to the initial DC electric current, generate the square-wave pulse signal of phase mutual deviation 180 degree.
- 4. circuit according to claim 3, it is characterised in that the sample circuit includes：Resistance and current sampling circuit；The first end of the resistance is connected with the first output end of the DC-DC power module；The current sampling circuit is connected with the both ends of the resistance, wherein, the current sampling circuit flows through institute for collection State the initial DC electric current of resistance.
- 5. circuit according to claim 4, it is characterised in that the digital control circuit includes：Current amplification circuit, number Word chip and drive circuit；The current amplification circuit is connected with the current sampling circuit, described first for what is gathered to the current sampling circuit Beginning DC current is amplified processing, the electric current after being amplified；The digit chip is connected with the current amplification circuit, for receiving the amplification of the current amplification circuit conveying Electric current afterwards, and the electric current after the amplification is analyzed, electric current after analysis obtains the amplification is less than predetermined current During value, the dutycycle of the square-wave pulse signal of increase output mutual deviation 180 degree；The drive circuit is connected with the digit chip, the square wave of the mutual deviation 180 degree for receiving the digit chip transmission Pulse signal, and drive the push-pull circuit to work according to the square-wave pulse signal of the mutual deviation 180 degree, wherein, the mutual deviation The square-wave pulse signal of 180 degree includes first via square-wave pulse signal and the second road square-wave pulse signal.
- 6. circuit according to claim 5, it is characterised in that the push-pull circuit includes：First mos field effect transistors Pipe, the 2nd mos field-effect transistors, transformer and current rectifying and wave filtering circuit, wherein, the transformer includes the primary of two series connection Winding and the secondary windings of two series connection；The grid of the first mos field-effect transistors is connected with the drive circuit, the first mos field-effect transistors Drain electrode is connected with the first not common end of the armature winding of the transformer, and the source electrode of the first mos field-effect transistors connects Ground, the first mos field-effect transistors are used to turn under the control of the first via square-wave pulse signal, with to the change The armature winding conveying first via square wave current signal of depressor；The grid of the 2nd mos field-effect transistors is connected with the drive circuit, the 2nd mos field-effect transistors Drain electrode is connected with the second not common end of the armature winding of the transformer, and the source electrode of the 2nd mos field-effect transistors connects Ground, the 2nd mos field-effect transistors are used to turn under the control of second road square-wave pulse signal, with to the change The armature winding of depressor conveys the second tunnel square wave current signal；The common port of the armature winding of the transformer connects the second end of the resistance, and the transformer is used for described first The first via square wave current signal of mos field-effect transistors conveying carries out power conversion, obtains first voltage square wave, with And second tunnel square wave current signal of the 2nd mos field-effect transistors conveying is subjected to power conversion, obtain second Voltage square wave；The current rectifying and wave filtering circuit is connected with the secondary windings of the transformer, for by the first voltage square wave and described Two voltage square waves carry out rectifying and wave-filtering processing, obtain the target positive voltage.
- 7. circuit according to claim 6, it is characterised in that the current rectifying and wave filtering circuit includes：Second diode, the 3rd Diode, filter circuit, wherein, the filter circuit includes inductance and the second electric capacity；The anode of second diode is connected with the first not common end of the secondary windings of the transformer, the two or two pole The negative electrode of pipe is connected with the first end of the inductance, and second diode is used to carry out rectification to the first voltage square wave, Obtain the first positive voltage square wave；The anode of 3rd diode is connected with the second not common end of the secondary windings of the transformer, the three or two pole The negative electrode of pipe is connected with the first end of the inductance, and the 3rd diode is used to carry out rectification to the second voltage square wave, Obtain the second positive voltage square wave；Second end of the inductance is connected with the first end of second electric capacity, the second end and the transformation of second electric capacity The common port connection of the secondary windings of device, the filter circuit, for the first positive voltage square wave and second positive electricity Pressure square wave is filtered processing, obtains target positive voltage, and the target positive voltage is fed back into the power circuit.
- 8. circuit according to claim 7, it is characterised in that the energy feedback circuit also includes：3rd electric capacity and Four electric capacity；3rd electric capacity is in parallel with second electric capacity, for storing the energy of the target positive voltage conveying；The first end of 4th electric capacity is connected with the second end of the resistance, the second end ground connection of the 4th electric capacity, described 4th electric capacity is used to be filtered the pulsating current for flowing through the resistance, removes the pulsating current in the resistance.
- 9. circuit according to claim 5, it is characterised in thatThe digit chip is also connected with host computer, the predetermined current set for receiving user by the host computer Value.
- 10. a kind of energy back feed device applied to power source aging system, it is characterised in that described device will including aforesaid right The energy feedback circuit and shell applied to power source aging system any one of 1 to 9 are sought, wherein, it is described to be applied to electricity The energy feedback circuit of source ageing system is arranged at the inside of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264242.7U CN207200581U (en) | 2017-09-28 | 2017-09-28 | Energy feedback circuit and device applied to power source aging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264242.7U CN207200581U (en) | 2017-09-28 | 2017-09-28 | Energy feedback circuit and device applied to power source aging system |
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| Publication Number | Publication Date |
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| CN207200581U true CN207200581U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721264242.7U Expired - Fee Related CN207200581U (en) | 2017-09-28 | 2017-09-28 | Energy feedback circuit and device applied to power source aging system |
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| CN (1) | CN207200581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445285A (en) * | 2018-06-21 | 2018-08-24 | 深圳市德兰明海科技有限公司 | A kind of current sampling circuit |
| CN109194145A (en) * | 2018-10-23 | 2019-01-11 | 阳光电源股份有限公司 | It recommends the driving circuit of Switching Power Supply and recommends Switching Power Supply |
| CN113054647A (en) * | 2021-05-06 | 2021-06-29 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
-
2017
- 2017-09-28 CN CN201721264242.7U patent/CN207200581U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445285A (en) * | 2018-06-21 | 2018-08-24 | 深圳市德兰明海科技有限公司 | A kind of current sampling circuit |
| CN108445285B (en) * | 2018-06-21 | 2020-09-11 | 深圳市德兰明海科技有限公司 | Current sampling circuit |
| CN109194145A (en) * | 2018-10-23 | 2019-01-11 | 阳光电源股份有限公司 | It recommends the driving circuit of Switching Power Supply and recommends Switching Power Supply |
| CN109194145B (en) * | 2018-10-23 | 2020-01-21 | 阳光电源股份有限公司 | Drive circuit of push-pull switching power supply and push-pull switching power supply |
| CN113054647A (en) * | 2021-05-06 | 2021-06-29 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
| CN113054647B (en) * | 2021-05-06 | 2022-08-05 | 杭州中安电子有限公司 | Energy recovery device of DC/DC module |
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