CN209571955U

CN209571955U - A kind of power circuit

Info

Publication number: CN209571955U
Application number: CN201920729577.4U
Authority: CN
Inventors: 张洪; 涂小平; 石泽发; 彭永和
Original assignee: Sichuan Hongmei Intelligent Technology Co Ltd
Current assignee: Sichuan Hongmei Intelligent Technology Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2019-11-01
Anticipated expiration: 2029-05-21

Abstract

It includes: input rectifying filter module, the first output rectification filter module, the second output rectification filter module, third output rectification filter module, voltage transformation conversion module, voltage feedback module and energy supply control module that the utility model, which provides a kind of power circuit,；The available input rectifying filter module of the armature winding of voltage transformation conversion module is filtered rectification treated the first direct current to the first external alternating current, it is energy supply control module power supply by auxiliary winding, by armature winding and using the secondary windings of heap lap winding coiling, according to energy supply control module by voltage feedback module to the voltage feedback signal of the situation of change of circuit electric energy feedback by the first converting direct-current power into alternating-current power energy, corresponding alternating current transmission is given to the first output rectification filter module by the different tap of armature winding, second output rectification filter module and third output rectification filter module, load is transferred to after so that it is carried out rectifying and wave-filtering processing.This programme can be improved the reliability of system.

Description

A kind of power circuit

Technical field

The utility model relates to intelligent appliance technical field, in particular to a kind of power circuit.

Background technique

With the development of economy, household electrical appliances have become essential product for people's lives, save many housework of people, are Home life is made that no small contribution.

Currently, the drive control plate of most of household electrical appliances needs multiple-way supply power supply, for example, 5Vdc, 12Vdc, 30Vdc, with Guarantee that driving plate operates normally.But the drive control plate power circuit of household electrical appliances generallys use and is equipped with photoelectrical coupler and TL431 The single-lens reflex camera current feed circuit of composition.Its core devices transformer equipment generallys use Multiple coil separation winding technique, this meeting is so that transformation The leakage inductance of device is larger, and peak-charging effect can be generated on output filter capacitor, so that the load regulation under underloading is deteriorated, from And cause the reliability of system low.

Utility model content

The utility model embodiment provides a kind of power circuit, can be improved the reliability of system.

In a first aspect, the utility model embodiment provides a kind of power circuit, comprising: input rectifying filter module, One output rectification filter module, the second output rectification filter module, third output rectification filter module, voltage transformation conversion module, electricity Press feedback module and energy supply control module；

The input rectifying filter module will filter out ripple for filtering out the ripple in externally input first alternating current First alternating current afterwards is converted to the first direct current, and is transferred to the armature winding of the voltage transformation conversion module；

The voltage transformation conversion module, for first DC power transmission to be controlled mould to the power supply by auxiliary winding Block, by armature winding and secondary windings, according to the voltage control signal that energy supply control module transmits, by first direct current It is converted into AC energy, by the first tap of the armature winding by corresponding second alternating current transmission to first output Rectification filtering module, it is by the second tap of the armature winding that corresponding third alternating current transmission is whole to second output Filter module is flowed, gives corresponding 4th alternating current transmission to third output rectification by the third tap of the armature winding Filter module, wherein the magnetic secondary windings uses the coiling of heap lap winding；

The first output rectification filter module for filtering out the ripple in second alternating current, and is converted to second First pin of the DC power transmission to load；The second output rectification filter module, for filtering out in the third alternating current Ripple, and be converted to third DC power transmission give the load the second pin；The third output rectification filter module is used In filtering out the ripple in the 4th alternating current, and the 4th DC power transmission is converted to the third pin of the load；

The voltage feedback module, for according to the first output rectification filter module, the second output rectification filter The situation of change of wave module and the electric energy of third output rectification filter module output generates voltage feedback signal and is transferred to The energy supply control module, so that the energy supply control module is passed according to the voltage feedback signal to the voltage transformation conversion module The defeated corresponding voltage control signal.

Preferably,

The input rectifying filter module, comprising: X2 capacitor, common mode inductance, rectifier bridge stack and the first alminium electrolytic condenser；

One end of the X2 capacitor exchanges with described first and is electrically connected, and the third end of common mode inductance described in the other end is connected；

The first end of the common mode inductance is exchanged with described first and is electrically connected, the first electricity of second end and the rectifier bridge stack It flows input terminal to be connected, the 4th end is connected with the second current input terminal of the rectifier bridge stack；

The cathode connection signal of the rectifier bridge stack, the positive input terminal with the armature winding is connected；

The anode of first alminium electrolytic condenser is connected with the anode of the rectifier bridge stack, cathode connection signal.

Preferably,

The input rectifying filter module further comprises: fuse resistance, thermistor, varistor, first resistor And second resistance；

The first end of the fuse resistance is exchanged with described first and is electrically connected, and the first of second end and the thermistor End is connected, and the second end of the thermistor is connected with the first segment of the common mode inductance；

One end of the varistor is connected with the second end of the fuse resistance, other end connection signal；

Described first resistor one end is connected with the second end of the thermistor, one end of the other end and the second resistance It is connected, the other end connection signal of the second resistance.

Preferably,

The first output rectification filter module, comprising: first diode, the first Leaded Ceramic Disc Capacitor, the second Leaded Ceramic Disc Capacitor, Two alminium electrolytic condensers, 3rd resistor and the 4th resistance；

The anode of the first diode is connected with first tap, and cathode is connected with the first pin of the load；

One end of first Leaded Ceramic Disc Capacitor and the 3rd resistor is connected with the cathode of the first diode, another End is grounded；

The anode of second alminium electrolytic condenser is connected with the cathode of the first diode, cathode ground connection；

Described 4th resistance one end is connected with first tap, one end phase of the other end and second Leaded Ceramic Disc Capacitor Even, the other end of second Leaded Ceramic Disc Capacitor is connected with the cathode of the first diode.

Preferably,

The second output rectification filter module, comprising: the second diode, third alminium electrolytic condenser, the 5th resistance, the 6th Resistance and third Leaded Ceramic Disc Capacitor；

The anode of second diode is connected with second tap, and cathode is connected with the second pin of the load；

The anode of the third alminium electrolytic condenser is connected with the cathode of second diode, cathode ground connection；

One end of 5th resistance is connected with second tap, other end ground connection；

One end of 6th resistance is connected with the anode of second diode, the other end and the third Leaded Ceramic Disc Capacitor One end be connected, the other end of the third Leaded Ceramic Disc Capacitor is connected with the cathode of second diode.

Preferably,

The third output rectification filter module, comprising: third diode, the 4th alminium electrolytic condenser, the 7th resistance and Four Leaded Ceramic Disc Capacitors；

The anode of the third diode is connected with the third tap, and cathode is connected with the third pin of the load；

The anode of 4th alminium electrolytic condenser is connected with the cathode of the third diode, cathode ground connection；

One end of 7th resistance is connected with the third tap, one end phase of the other end and the 4th Leaded Ceramic Disc Capacitor Even, the other end of the 4th Leaded Ceramic Disc Capacitor is connected with the cathode of the third diode.

Preferably,

The voltage feedback module, comprising: the first glaze resistance, the second glaze resistance, third glaze resistance, three Feed back submodule, the 5th Leaded Ceramic Disc Capacitor, controllable accurate source of stable pressure and photoisolator in road；

The first end of first glaze resistance is connected with the output end of the third output rectification filter module, and second End is connected with the first end of second glaze resistance, the second end of second glaze resistance and the 5th porcelain dielectric One end of appearance is connected, and the other end of the 5th Leaded Ceramic Disc Capacitor is connected with the first end of the third glaze resistance, and described the The second end of three glaze resistances is connected with three tunnel feedback submodule；

Three tunnel feedback submodule respectively with the cathode of the first diode, the second output rectification filter module Output end be connected with the output end of the third output rectification filter module, for by the first output rectification filter mould The electric energy of block, the second output rectification filter module and third output rectification filter module output is transferred to described controllable Precision voltage regulator；

The cathode of the controllable accurate source of stable pressure is connected with the second end of second glaze resistance, with reference to pole with it is described Three tunnels feed back submodule and are connected, plus earth, for carrying out steady pressure treatment to the electric energy of three tunnel feedback submodule transmission, and Electric energy after pressure stabilizing is transferred to the photoisolator；

The photophore of the photoisolator anode be connected with the cathode of the controllable accurate source of stable pressure, cathode with it is described The second end of first glaze resistance is connected, and the light-receiving device of the photoisolator is connected with the energy supply control module, is used for By the photophore according to the corresponding optical signal of power output after pressure stabilizing, and by the light-receiving device according to the optical signal The voltage feedback signal is transmitted to the energy supply control module.

Preferably,

Three tunnel feed back submodule, comprising: the 4th glaze resistance, the 5th glaze resistance, the 6th glaze resistance, 7th glaze resistance, the 8th glaze resistance, the 9th glaze resistance, the tenth glaze resistance, the 11st glaze resistance；

The first end of 4th glaze resistance and the 5th glaze resistance exports rectification filter with the third The output end of wave module is connected, and second end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of 6th glaze resistance and the 7th glaze resistance is filtered with the second output rectification The output end of wave module is connected, and second one end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of 7th glaze resistance and the 8th glaze resistance is negative with the first diode Extremely it is connected, second end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of tenth glaze resistance and the 11st glaze resistance is electric with the 4th glass glaze The second end of resistance is connected, and second end is grounded；

The second end of the third glaze resistance is connected with the second end of the 4th glaze resistance.

Preferably,

The energy supply control module, comprising: power supply control chip, the 6th Leaded Ceramic Disc Capacitor and power module；

The input terminal of the power module and the armature winding, the output end of the auxiliary winding and the power supply control Chip is connected, for powering for the power supply control chip；

One end connection signal of 6th Leaded Ceramic Disc Capacitor, the other end and the power supply control chip input pin phase Even, for the voltage feedback signal of the light-receiving device transmission of the photoisolator to be transferred to the power supply control chip, So that the power supply control chip transmits the corresponding voltage to the voltage transformation conversion module according to the voltage feedback signal Control signal；

Preferably,

The power module, comprising: the 7th Leaded Ceramic Disc Capacitor, the 12nd glaze resistance, the 13rd glaze resistance, the tenth Four glaze resistances, the 15th glaze resistance, the 16th glaze resistance, the 5th alminium electrolytic condenser and the 4th diode；

12nd glaze resistance, the 13rd glaze resistance, the 14th glaze resistance and described 15th glaze resistance is sequentially connected in series the confession of the output end and the power supply control chip in the input rectifying filter module Between fulgurite foot；

One end of 7th Leaded Ceramic Disc Capacitor is grounded, and the other end is connected to the 14th glaze resistance and the described tenth Between five glaze resistances；

The anode of 5th alminium electrolytic condenser is connected to the 14th glaze resistance and the 15th glass glaze Between resistance, cathode ground connection；

The anode of 4th diode is connected with the output end of the auxiliary winding, cathode and the 16th glass glaze The first end of resistance is connected, and the second end of the 16th glaze resistance is connected to the 14th glaze resistance and described Between 15th glaze resistance.

Preferably,

The energy supply control module further comprises: the 17th glaze resistance and the 18th glaze resistance；

The first end of 17th glaze resistance and the 18th glaze resistance controls core with the power supply The chip-select pin of piece is connected, and second end is all connected with signal ground.

Preferably,

The energy supply control module further comprises: the 19th glaze resistance, the 20th glaze resistance, the 20th One glaze resistance, the 8th Leaded Ceramic Disc Capacitor and the 5th diode；

The first end of 19th glaze resistance is connected with the input terminal of the secondary windings, second end and described the The first end of 20 glaze resistances is connected, the second end of the 20th glaze resistance and the cathode of the 5th diode It is connected, the anode of the 5th diode is connected with the drain pin of the power supply control chip；

The first end of 21st glaze resistance is connected with the input terminal of the secondary windings, second end with it is described The second end of 19th glaze resistance is connected；

One end of 8th Leaded Ceramic Disc Capacitor is connected with the input terminal of the secondary windings, the other end and the 19th glass The second end of glass glaze resistance is connected.

Preferably,

Further comprise: the first safety capacitor and the second safety capacitor；

One end of the first safety capacitor is connected with the one end on the connection signal of auxiliary winding ground, the other end and institute The one end for stating the second safety capacitor is connected, the other end ground connection of the second safety capacitor.

Power circuit provided by the utility model, input rectifying filter module can to externally input first alternating current into The processing of row filter rectification obtains the first direct current, and is transferred to voltage transformation conversion module；The armature winding of voltage transformation conversion module and time Grade winding on the basis of on magnetic core using traditional sandwich winding coiling, then use secondary windings with stack winding method around System, electric energy-magnetic energy-electric energy energy transmission can be reached with efficient transmission mode, can also reinforce the magnetic coupling between winding, Effectively inhibit radiation interference, makes that trend is obviously reduced in the parameters such as electromagnetic consumable, the leakage inductance of voltage transformation conversion module, to improve The reliability of system；And the number of turns of the corresponding coil of different taps is different, and the corresponding winding of the first tap can share The mode of the corresponding winding of second tap and ground terminal, the corresponding winding of the second tap can share the corresponding winding of third tap And the mode of ground terminal, the cross regulation rate problem between exporting and exporting is avoided completely, then passes through the first output rectification filter The electric energy that module, the second output rectification filter module and third output rectification filter module input voltage transformation conversion module is filtered Wave rectification processing, can power to the load；The first output rectification filter module, the second output are rectified by voltage feedback module The situation of change for the electric energy that filter module, third output rectification filter module export, is fed back to corresponding voltage feedback signal Energy supply control module controls voltage transformation conversion module according to the situation of change of electric energy in circuit convenient for energy supply control module, So as to parameters such as the electrical losses, magnetic loss, leakage inductance that reduce voltage transformation conversion module, the overall performance of system is improved, realizes and improves system The purpose for reliability of uniting.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.

Fig. 1 is a kind of schematic diagram for power circuit that the utility model one embodiment provides；

Fig. 2 is the schematic diagram for another power circuit that the utility model one embodiment provides.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments, based on the implementation in the utility model Example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all belongs to In the range of the utility model protection.

As shown in Figure 1, the utility model embodiment provides a kind of power circuit, comprising: input rectifying filter module 101, the first output rectification filter module 102, the second output rectification filter module 103, third output rectification filter module 104, Voltage transformation conversion module 105, voltage feedback module 106 and energy supply control module 107；

The input rectifying filter module 101 will filter out wave for filtering out the ripple in externally input first alternating current First alternating current after line is converted to the first direct current, and is transferred to the armature winding of the voltage transformation conversion module 105；

The voltage transformation conversion module 105, for giving first DC power transmission to the power supply control by auxiliary winding Molding block 107, will be described according to the voltage control signal that energy supply control module 107 transmits by armature winding and secondary windings First converting direct-current power into alternating-current power energy, by the first tap of the armature winding by corresponding second alternating current transmission to institute The first output rectification filter module 102 is stated, is given corresponding third alternating current transmission by the second tap of the armature winding The second output rectification filter module 103, by the third tap of the armature winding by corresponding 4th alternating current transmission To the third output rectification filter module 104, wherein the magnetic secondary windings uses the coiling of heap lap winding；

The first output rectification filter module 102 for filtering out the ripple in second alternating current, and is converted to First pin of two DC power transmissions to load；The second output rectification filter module 103, for filtering out the third exchange Ripple in electricity, and third DC power transmission is converted to the second pin of the load；The third output rectification filter mould Block 104 for filtering out the ripple in the 4th alternating current, and is converted to the 4th DC power transmission to the third pipe of the load Foot；

The voltage feedback module 106, for according to the first output rectification filter module 102, second output The situation of change of rectification filtering module 103 and the electric energy of the third output rectification filter module 104 output, generates Voltage Feedback Signal is simultaneously transferred to the energy supply control module 107 so that the energy supply control module 107 according to the voltage feedback signal to The voltage transformation conversion module 105 transmits the corresponding voltage control signal.

Optionally, the input rectifying filter module, comprising: X2 capacitor, common mode inductance, rectifier bridge stack and the first aluminium electroloysis Capacitor；

In the utility model embodiment, externally input first alternating current X2 capacitor and common mode inductance by being made of LC high-frequency filter circuit, then by rectifier bridge stack be converted into fluctuation the first direct current, the first direct current then fluctuated by way of by First alminium electrolytic condenser reaches the first constant direct current, is finally passed to voltage transformation conversion module.

Optionally, the input rectifying filter module further comprises: fuse resistance, thermistor, varistor, First resistor and second resistance；

In the utility model embodiment, externally input first alternating current passes through by fuse resistance, thermistor, pressure What quick resistance, first resistor and second resistance formed exchanges input protection circuit, can play overcurrent protection, overvoltage protection, prevent The function of the surge current of lightning strike protection and suppression circuit, improves the safety of system.

Optionally, the first output rectification filter module, comprising: first diode, the first Leaded Ceramic Disc Capacitor, the second porcelain are situated between Capacitor, the second alminium electrolytic condenser, 3rd resistor and the 4th resistance；

In the utility model embodiment, the second AC energy of the first tap output of approach voltage transformation conversion module passes through After first diode, the second direct current of fluctuation can be transformed into, then filtered by the second alminium electrolytic condenser and the first Leaded Ceramic Disc Capacitor Available the second stable direct current energy afterwards, among these, what the second Leaded Ceramic Disc Capacitor and 3rd resistor and the 4th resistance formed The high fdrequency component of the second direct current energy can be absorbed in RC filter branch, causes noise, ripple to achieve the effect that reduce output.

Optionally, the second output rectification filter module, comprising: the second diode, third alminium electrolytic condenser, the 5th electricity Resistance, the 6th resistance and third Leaded Ceramic Disc Capacitor；

In the utility model embodiment, the third AC energy of the second tap output of approach voltage transformation conversion module passes through After second diode, the third direct current of fluctuation can be converted, then by available stabilization after the filtering of third alminium electrolytic condenser Third direct current, and among these, the RC filter branch of the 5th resistance, the 6th resistance and third Leaded Ceramic Disc Capacitor composition can be with The high fdrequency component for absorbing third direct current energy achievees the effect that noise, ripple caused by reducing output.

Optionally, the third output rectification filter module, comprising: third diode, the 4th alminium electrolytic condenser, the 7th electricity Resistance and the 4th Leaded Ceramic Disc Capacitor；

In the utility model embodiment, the 4th AC energy of the third tap output of approach voltage transformation conversion module passes through After third diode, the 4th direct current energy of fluctuation can be transformed into, then by available steady after the filtering of the 4th alminium electrolytic condenser The 4th fixed direct current energy.Among these, the RC filter branch being made of the 7th resistance and the 4th Leaded Ceramic Disc Capacitor can be absorbed The high fdrequency component of four direct current energies, to achieve the effect that noise, ripple caused by reducing output.

Optionally, the voltage feedback module, comprising: the first glaze resistance, the second glaze resistance, third glass glaze Resistance, three tunnels feedback submodule, the 5th Leaded Ceramic Disc Capacitor, controllable accurate source of stable pressure and photoisolator；

In the utility model embodiment, according to business demand by adjusting the first glaze resistance, the second glass glaze electricity The resistance value of submodule is fed back on tri- tunnel Zu He, can make the first glaze resistance, the second glaze resistance, third glass glaze electricity Resistance, the 5th partial node capacitor and three tunnels feedback submodule can accurately detect the situation of change of three road direct current energies of output, then pass through Controllable accurate source of stable pressure and photoisolator feed back to energy supply control module, and energy supply control module can be by the Voltage Feedback of feedback Signal transmits corresponding voltage control signal to voltage transformation conversion module, to control voltage transformation conversion module, improves underloading The regulation of lower load, and then improve the reliability of system.

Optionally, submodule is fed back on three tunnel, comprising: the 4th glaze resistance, the 5th glaze resistance, the 6th glass Glaze resistance, the 7th glaze resistance, the 8th glaze resistance, the 9th glaze resistance, the tenth glaze resistance, the 11st glass Glaze resistance；

4th glass

Output of the first end of glaze resistance and the 5th glaze resistance with the third output rectification filter module End is connected, and second end is extremely connected with the reference of the controllable accurate source of stable pressure；

In the utility model embodiment, pass through the 4th glaze resistance, the 5th glaze resistance, the tenth glaze resistance With the 11st glaze resistance, the feed circuit of third output rectification filter module can be formed.By the 6th glaze resistance, 7th glaze resistance, the tenth glaze resistance and the 11st glaze resistance can form the second output rectification filter module Feed circuit.Pass through the 8th glaze resistance, the 9th glaze resistance, the tenth glaze resistance and the 11st glass glaze electricity Resistance, can form the feed circuit of the first output rectification filter module, can accurately be to controllable essence by these three feed circuits It is whole that close source of stable pressure and photoisolator feed back the first output rectification filter module, the second output rectification filter module and third output Flow the situation of change of the electric energy of filter module output.

Optionally, the energy supply control module, comprising: power supply control chip, the 6th Leaded Ceramic Disc Capacitor and power module；

In the utility model embodiment, it can be powered to power supply control chip by power supply module, to guarantee power supply control Coremaking piece operates normally, and the voltage feedback signal of approach photoisolator is smoothed by the 6th Leaded Ceramic Disc Capacitor, so that The noise in voltage feedback signal is filtered out, and smoothed out voltage feedback signal is transferred to power supply control chip, so that its is right Voltage transformation conversion module control.

Optionally, the power module, comprising: the 7th Leaded Ceramic Disc Capacitor, the 12nd glaze resistance, the 13rd glass glaze electricity Resistance, the 14th glaze resistance, the 15th glaze resistance, the 16th glaze resistance, the 5th alminium electrolytic condenser and the four or two Pole pipe；

In the utility model embodiment, by by the 7th Leaded Ceramic Disc Capacitor, the 12nd glaze resistance, the 13rd glass glaze Resistance, the 14th glaze resistance, the 15th glaze resistance, the 16th glaze resistance, the 5th alminium electrolytic condenser and the 4th The energy supply circuit of diode composition, the electric energy transmitted for power supply control chip can be smoothed, then be passed to power supply It controls in chip, so that power supply control chip can operate normally.

Optionally, the energy supply control module further comprises: the 17th glaze resistance and the 18th glass glaze electricity Resistance；

In the utility model embodiment, by the 17th glaze resistance be connected to signal ground and power supply control chip it Between, the overload protective function to power supply control chip can be played, to avoid route because overload causes power supply control chip to overheat Damage, is connected between signal ground and power supply control chip by the 18th glaze resistance, can also be played and be controlled power supply The overload protective function of chip, to avoid route because overload causes power supply control chip to cross cause thermal damage, by the 17th glass glaze electricity The overload protecting circuit of resistance and the 18th glaze resistance composition, can be to avoid the 17th glaze resistance or the 18th glass After glaze resistance failure, overload protection can not be played to power supply control chip.

Optionally, the energy supply control module further comprises: the 19th glaze resistance, the 20th glaze resistance, 21st glaze resistance, the 8th Leaded Ceramic Disc Capacitor and the 5th diode；

In the utility model embodiment, by by the 19th glaze resistance, the 20th glaze resistance, the 21st The branch protection circuit of the power supply control chip of glaze resistance, the 8th Leaded Ceramic Disc Capacitor and the 5th diode composition, can protect Voltage control chip will not overvoltage, thus avoid high pressure power supply control chip puncture and fail.

Optionally, the power circuit further comprises: the first safety capacitor and the second safety capacitor；

In the utility model embodiment, the protection circuit being made up of the first safety capacitor and the second safety capacitor can To play the function of isolation decoupling, to reduce Electro Magnetic Compatibility of the raising system in electromagnetic environment.

As shown in Fig. 2, the utility model provides a kind of power circuit, comprising:

Input rectifying filter module 10, the first output rectification filter module 20, the second output rectification filter module 30, third Output rectification filter module 40, voltage transformation conversion module 50, voltage feedback module 60, energy supply control module 70, the first safety capacitor C_aThe 1 and second safety capacitor C_a2；

Input rectifying filter module 10, comprising: fuse resistance F1, thermistor RT, varistor RV, first resistor R_t1, second resistance R_t2, X2 capacitor C_a3, common mode inductance LF1, rectifier bridge stack BD1 and the first alminium electrolytic condenser C_v1；

X2 capacitor C_a3 one end exchanges with first and is electrically connected, and the third end of other end common mode inductance LF1 is connected；

The first end of common mode inductance LF1 is exchanged with first and is electrically connected, and the first electric current of second end and rectifier bridge stack BD1 input End is connected, and the 4th end is connected with the second current input terminal of rectifier bridge stack BD1；

The cathode connection signal of rectifier bridge stack BD1, anode is connected with the input terminal C of armature winding；

First alminium electrolytic condenser C_v1 anode is connected with the anode of rectifier bridge stack BD1, cathode connection signal.

The first end of fuse resistance F1 is exchanged with first to be electrically connected, and second end is connected with the first end of thermistor RT, The second end of thermistor RT is connected with the first segment of common mode inductance；

One end of varistor RV is connected with the second end of fuse resistance F1, other end connection signal；

First resistor R_t1 one end is connected with the second end of thermistor RT, the other end and second resistance R_t2 one end is connected, Second resistance R_t2 other end connection signal.

Specifically, externally input first alternating current is first by by fuse resistance, thermistor, varistor, One resistance exchanges input protection circuit with what second resistance formed, using the LC filtered electrical being made of X2 capacitor and common mode inductance Road, then it is transformed by rectifier bridge stack the first direct current of fluctuation, the first direct current approach finally fluctuated is by the first aluminium electroloysis electricity Hold the armature winding for reaching constant the first DC power transmission to voltage transformation conversion module 50.

The armature winding and secondary windings of voltage transformation conversion module 50 use the basis of sandwich winding coiling on magnetic core T On, then the coiling of stack method used using secondary windings, according to the voltage control signal that energy supply control module 70 transmits, by the One direct current is converted to magnetic energy and is reconverted into alternating current, passes through the first tap G, the second tap H and third pumping on secondary windings Head I gives corresponding alternating current transmission to corresponding first output rectification filter module 20, the second output rectification filter module 30 and third output rectification filter module 40, to be load supplying.Due to the first tap G, the second tap H on secondary windings and The number of turns of the corresponding coil of third tap I is different, and shares identical ground terminal G, it is possible to reduce transformation modulus of conversion The parameters such as electromagnetic consumable, the leakage inductance of block, to improve the stability of power circuit.

First output rectification filter module 20, comprising: first diode D1, the first Leaded Ceramic Disc Capacitor C_C1, the second Leaded Ceramic Disc Capacitor C_C2, the second alminium electrolytic condenser C_v2,3rd resistor R_t3 and the 4th resistance R_t4；

The anode of first diode D1 is connected with the first tap G, and cathode is connected with the first pin X of load；

First Leaded Ceramic Disc Capacitor C_C1 and 3rd resistor R_t3 one end is connected with the cathode of the second diode, and the other end connects Ground；

Second alminium electrolytic condenser C_v2 anode is connected with the cathode of first diode D1, cathode ground connection；

4th resistance R_t4 one end are connected with the first tap G, the other end and the second Leaded Ceramic Disc Capacitor C_C2 one end is connected, and second Leaded Ceramic Disc Capacitor C_C2 other end is connected with the cathode of first diode.

Second output rectification filter module 3, comprising: the second diode D2, third alminium electrolytic condenser C_v3, the 5th resistance R_t5、 6th resistance R_t6 and third Leaded Ceramic Disc Capacitor C_C3；

The anode of second diode D2 is connected with the second tap H, and cathode is connected with the second pin Y of load；

Third alminium electrolytic condenser C_v3 anode is connected with the cathode of the second diode D2, cathode ground connection；

5th resistance R_t5 one end is connected with the second tap H, other end ground connection；

6th resistance R_t6 one end is connected with the anode of the second diode D2, the other end and third Leaded Ceramic Disc Capacitor C_CThe one of 3 End is connected, third Leaded Ceramic Disc Capacitor C_C3 other end is connected with the cathode of the second diode D2.

Third output rectification filter module 40, comprising: third diode D3, the 4th alminium electrolytic condenser C_V4, the 7th resistance R_t7 With the 4th Leaded Ceramic Disc Capacitor C_C4；

The anode of third diode D3 is connected with third tap, and cathode is connected with the third pin of load；

4th alminium electrolytic condenser C_V4 anode is connected with the cathode of third diode D3, cathode ground connection；

7th resistance R_t7 one end is connected with third tap, the other end and the 4th Leaded Ceramic Disc Capacitor C_V4 one end is connected, and the 4th Leaded Ceramic Disc Capacitor C_V4 other end is connected with the cathode of third diode D3.

Voltage feedback module 60, comprising: the first glaze resistance R_b1, the second glaze resistance R_b2, third glaze resistance R_b3, submodule, the 5th Leaded Ceramic Disc Capacitor C are fed back in three tunnels_C5, controllable accurate source of stable pressure D6 and photoisolator PC1；

First glaze resistance R_bThe cathode phase of 1 first end and the third diode D3 of third output rectification filter module Even, second end and the second glaze resistance R_b2 first end is connected, the second glaze resistance R_b2 second end and the 5th porcelain dielectric Hold C_C5 one end is connected, the 5th Leaded Ceramic Disc Capacitor C_C5 other end is connected with the first end of third glaze resistance, third glass glaze Resistance R_b3 second end is connected with three tunnels feedback submodule；

Feed back submodule in three tunnels, comprising: the 4th glaze resistance R_b4, the 5th glaze resistance R_b5, the 6th glaze resistance R_b6, the 7th glaze resistance R_b7, the 8th glaze resistance R_b8, the 9th glaze resistance R_b9, the tenth glaze resistance R_b10, 11 glaze resistance R_b11；

4th glaze resistance R_b4 and the 5th glaze resistance R_b5 first end with third output rectification filter module 40 Third diode D3 cathode be connected, the 4th glaze resistance R_b4 and the 5th glaze resistance R_bThe second end of 5 first end Extremely it is connected with the reference of controllable accurate source of stable pressure D6；

6th glaze resistance R_b6 and the 7th glaze resistance R_b7 first end with the second output rectification filter module Output end is connected, and second one end is extremely connected with the reference of controllable accurate source of stable pressure D6；

7th glaze resistance R_b7 and the 8th glaze resistance R_b8 first end with the cathode phase of first diode D1 Even, the 7th glaze resistance R_b7 and the 8th glaze resistance R_b8 second end with the reference pole phase of controllable accurate source of stable pressure D6 Even；

Tenth glaze resistance R_b10 and the 11st glaze resistance R_b11 first end with the 4th glaze resistance R_b4 Second end be connected, the tenth glaze resistance R_b10 and the 11st glaze resistance R_b11 second end is grounded；

Wherein, third glaze resistance R_b3 second end and the 4th glaze resistance R_b4 second end is connected.

The cathode of controllable accurate source of stable pressure D6 and the second glaze resistance R_b2 second end is connected, with reference to pole and the 5th glass Glass glaze resistance R_b5 second end is connected, plus earth；

The anode of the photophore A of photoisolator PC1 is connected with the cathode of controllable accurate source of stable pressure D6, cathode and the first glass Glass glaze resistance R_b1 second end is connected, and the light-receiving device B of photoisolator PC1 is connected with energy supply control module 70.

Specifically, by four glaze resistances, the 5th glaze resistance, the 6th glaze resistance, the 7th glaze resistance, The three tunnels feedback submodule of eight glaze resistances, the 9th glaze resistance, the tenth glaze resistance, the 11st glaze resistance composition Block, by the cathode of the first diode with the first output rectification filter module, the second output rectification filter module the two or two The cathode of the third diode of the cathode and third output rectification filter module of pole pipe is connected, and enables it to accurate detection The situation of change of three road electric energy out, and it is transferred to controllable accurate source of stable pressure, pressure stabilizing is carried out to electric energy by controllable accurate source of stable pressure Photoisolator is handled and is transferred to, so that photoisolator will believe Voltage Feedback corresponding to the situation of change of circuit electric energy Number feed back to energy supply control module.

Energy supply control module 70, comprising: power supply control chip U, the 6th Leaded Ceramic Disc Capacitor C_C6, power module, the 17th glass Glaze resistance R_b17, the 18th glaze resistance R_b18, the 19th glaze resistance R_b19, the 20th glaze resistance R_b20, second 11 glaze resistance R_b21, the 8th Leaded Ceramic Disc Capacitor C_C8 and the 5th diode D5；

Power module, comprising: the 7th Leaded Ceramic Disc Capacitor C_C7, the 12nd glaze resistance R_b12, the 13rd glaze resistance R_b13, the 14th glaze resistance R_b14, the 15th glaze resistance R_b15, the 16th glaze resistance R_b16, the 5th aluminium electroloysis Capacitor C_v5 and the 4th diode D4；

12nd glaze resistance R_b12, the 13rd glaze resistance R_b13, the 14th glaze resistance R_b14 and the 15th Glaze resistance R_b15, be sequentially connected in series the first alminium electrolytic condenser anode and the power pin VDD-G of power supply control chip it Between；

7th Leaded Ceramic Disc Capacitor C_C7 one end ground connection, the other end are connected to the 14th glaze resistance R_b14 and the 15th glass Glaze resistance R_bBetween 15；

5th alminium electrolytic condenser C_v5 anode is connected to the 14th glaze resistance R_b14 and the 15th glaze resistance R_bBetween 15, cathode ground connection；

The anode of 4th diode D4 is connected with the output end E of auxiliary winding, cathode and the 16th glaze resistance R_b16 First end be connected, the 16th glaze resistance R_b16 second end is connected to the 14th glaze resistance R_b14 and the 15th glass Glass glaze resistance R_bBetween 15；

6th Leaded Ceramic Disc Capacitor C_C6 one end connection signal, the other end is connected with power supply control chip U input pin FB, For the voltage feedback signal of the light-receiving device B transmission of photoisolator PC1 to be transferred to power supply control chip U, so that power supply control Coremaking piece U transmits corresponding voltage control signal to voltage transformation conversion module 50 according to voltage feedback signal；

17th glaze resistance R_b17 and the 18th glaze resistance R_b18 first end with the piece of power supply control chip Pin CS is selected to be connected, the 17th glaze resistance R_b17 and the 18th glaze resistance R_b18 second end is all connected with signal ground；

19th glaze resistance R_b19 first end is connected with the input terminal C of secondary windings, second end and the 20th glass Glass glaze resistance R_b20 first end is connected, the 20th glaze resistance R_b20 second end is connected with the cathode of the 5th diode, the The anode of five diode D5 is connected with the drain pin Drain of power supply control chip U；

21st glaze resistance R_b21 first end is connected with the input terminal of secondary windings, second end and the 19th glass Glass glaze resistance R_b19 second end is connected；

8th Leaded Ceramic Disc Capacitor C_C8 one end is connected with the input terminal of secondary windings, the other end and the 19th glaze resistance R_b19 second end is connected.

Specifically, by by the 7th Leaded Ceramic Disc Capacitor, the 12nd glaze resistance, the 13rd glaze resistance, the 14th glass The electricity that glass glaze resistance, the 15th glaze resistance, the 16th glaze resistance, the 5th alminium electrolytic condenser and the 4th diode form Source controls the energy supply circuit of chip, can power for power supply control chip, so that it can be operated normally.By at least one the 17th The overload protecting circuit of glaze resistance composition, and by the 19th glaze resistance, the 20th glaze resistance, the 21st The branch protection circuit of glaze resistance, the 8th Leaded Ceramic Disc Capacitor and the 5th diode composition, can play to power supply control chip The function of protection avoids circuit high pressure, overload that power supply control chip is caused to fail.The Voltage Feedback of approach photoisolator is believed Number, it is transferred in power supply control chip after the 6th Leaded Ceramic Disc Capacitor is smooth, so that it controls voltage transformation conversion module.

In addition, mark PC1A shown in Figure 2 is the photophore of photoisolator, PC1B is the light of photoisolator Device；Mark X is the first pin of load, mark Y is the second pin of load, the third pin that mark Z is load；Identifying T is The magnetic core of voltage transformation conversion module, mark C are the input terminal of the armature winding of voltage transformation conversion module, and mark D is voltage transformation conversion module Armature winding output end, mark E be voltage transformation conversion module auxiliary winding output end, mark F be voltage transformation conversion module Auxiliary winding connection signal ground terminal, mark G be voltage transformation conversion module secondary windings the first tap, mark H be transformation turn Changing the mold the second tap of the secondary windings of block, the third tap for the secondary windings that mark I is voltage transformation conversion module, mark J is change Press the ground terminal of the secondary windings of conversion module.

In conclusion thawing control device and thawing control system that each embodiment of the utility model provides, at least have It has the advantages that:

1, in an embodiment of the utility model, input rectifying filter module can to externally input first alternating current into The processing of row filter rectification obtains the first direct current, and is transferred to voltage transformation conversion module；The armature winding of voltage transformation conversion module and time Grade winding on the basis of on magnetic core using traditional sandwich winding coiling, then use secondary windings with stack winding method around System, electric energy-magnetic energy-electric energy energy transmission can be reached with efficient transmission mode, can also reinforce the magnetic coupling between winding, Effectively inhibit radiation interference, makes that trend is obviously reduced in the parameters such as electromagnetic consumable, the leakage inductance of voltage transformation conversion module, to improve The reliability of system；And the number of turns of the corresponding coil of different taps is different, and the corresponding winding of the first tap can share The mode of the corresponding winding of second tap and ground terminal, the corresponding winding of the second tap can share the corresponding winding of third tap And the mode of ground terminal, the cross regulation rate problem between exporting and exporting is avoided completely, then passes through the first output rectification filter The electric energy that module, the second output rectification filter module and third output rectification filter module input voltage transformation conversion module is filtered Wave rectification processing, can power to the load；The first output rectification filter module, the second output are rectified by voltage feedback module The situation of change for the electric energy that filter module, third output rectification filter module export, is fed back to corresponding voltage feedback signal Energy supply control module controls voltage transformation conversion module according to the situation of change of electric energy in circuit convenient for energy supply control module, So as to parameters such as the electrical losses, magnetic loss, leakage inductance that reduce voltage transformation conversion module, the overall performance of system is improved, realizes and improves system The purpose for reliability of uniting.

2, in an embodiment of the utility model, externally input first alternating current passes through by X2 capacitor and common mode inductance group At LC high-frequency filter circuit, then by rectifier bridge stack be converted into fluctuation the first direct current, then fluctuate the first direct current way Reach the first constant direct current via the first alminium electrolytic condenser, is finally passed to voltage transformation conversion module.

3, in an embodiment of the utility model, externally input first alternating current passes through by fuse resistance, temperature-sensitive electricity What resistance, varistor, first resistor and second resistance formed exchanges input protection circuit, can play overcurrent protection, over-voltage is protected The function of the surge current of shield, anti-lightning strike protection and suppression circuit, improves the safety of system.

4, in an embodiment of the utility model, the second AC energy of the first tap output of approach voltage transformation conversion module After first diode, the second direct current of fluctuation can be transformed into, then by the second alminium electrolytic condenser and the first Leaded Ceramic Disc Capacitor Available the second stable direct current energy after filtering, among these, the second Leaded Ceramic Disc Capacitor and 3rd resistor and the 4th resistance group At RC filter branch the high fdrequency component of the second direct current energy can be absorbed, to reach the effect for reducing output and causing noise, ripple Fruit.

5, in an embodiment of the utility model, the third AC energy of the second tap output of approach voltage transformation conversion module After the second diode, the third direct current of fluctuation can be converted, then by available after the filtering of third alminium electrolytic condenser Stable third direct current, and among these, the RC filter branch of the 5th resistance, the 6th resistance and third Leaded Ceramic Disc Capacitor composition, The high fdrequency component that third direct current energy can be absorbed achievees the effect that noise, ripple caused by reducing output.

6, in an embodiment of the utility model, the 4th AC energy of the third tap output of approach voltage transformation conversion module After third diode, the 4th direct current energy of fluctuation can be transformed into, then by that can obtain after the filtering of the 4th alminium electrolytic condenser To the 4th stable direct current energy.Among these, the RC filter branch being made of the 7th resistance and the 4th Leaded Ceramic Disc Capacitor can be inhaled The high fdrequency component of the 4th direct current energy is received, to achieve the effect that noise, ripple caused by reducing output.

7, in an embodiment of the utility model, according to business demand by adjusting the first glaze resistance, the second glass The resistance value of glaze resistance and three tunnels feedback submodule, can make the first glaze resistance, the second glaze resistance, third glass glaze Resistance, the 5th partial node capacitor and three tunnels feedback submodule can accurately detect the situation of change of three road direct current energies of output, then lead to It crosses controllable accurate source of stable pressure and photoisolator feeds back to energy supply control module, energy supply control module can be anti-by the voltage of feedback Feedback signal transmits corresponding voltage control signal to voltage transformation conversion module, to control voltage transformation conversion module, improves light The lower regulation loaded is carried, and then improves the reliability of system.

8, in an embodiment of the utility model, pass through the 4th glaze resistance, the 5th glaze resistance, the tenth glass glaze Resistance and the 11st glaze resistance, can form the feed circuit of third output rectification filter module.Pass through the 6th glass glaze Resistance, the 7th glaze resistance, the tenth glaze resistance and the 11st glaze resistance, can form the second output rectification filter The feed circuit of module.Pass through the 8th glaze resistance, the 9th glaze resistance, the tenth glaze resistance and the 11st glass glaze Resistance can form the feed circuit of the first output rectification filter module, can accurately be to controllable by these three feed circuits Precision voltage regulator and photoisolator feed back the first output rectification filter module, the second output rectification filter module and third output The situation of change of the electric energy of rectification filtering module output.

9, it in an embodiment of the utility model, can be powered to power supply control chip by power supply module, to guarantee electricity Source controls chip and operates normally, and the voltage feedback signal of approach photoisolator is smoothed by the 6th Leaded Ceramic Disc Capacitor, So as to filter out the noise in voltage feedback signal, and smoothed out voltage feedback signal is transferred to power supply control chip, so as to It controls voltage transformation conversion module.

10, in an embodiment of the utility model, by by the 7th Leaded Ceramic Disc Capacitor, the 12nd glaze resistance, the 13rd Glaze resistance, the 14th glaze resistance, the 15th glaze resistance, the 16th glaze resistance, the 5th alminium electrolytic condenser With the energy supply circuit of the 4th diode composition, the electric energy transmitted for power supply control chip can be smoothed, then be passed to Into power supply control chip, so that power supply control chip can operate normally.

11, signal ground in an embodiment of the utility model, is connected to by the 17th glaze resistance and power supply controls Between chip, the overload protective function to power supply control chip can be played, to avoid route because overload causes power supply to control core Piece crosses cause thermal damage, is connected between signal ground and power supply control chip by the 18th glaze resistance, can also play to electricity Source controls the overload protective function of chip, to avoid route because overload causes power supply control chip to cross cause thermal damage, by the 17th glass The overload protecting circuit of glass glaze resistance and the 18th glaze resistance composition, can be to avoid the 17th glaze resistance or the tenth After the failure of eight glaze resistances, overload protection can not be played to power supply control chip.

It should be noted that, in this document, such as first and second etc relational terms are used merely to an entity Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non- It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements, It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment Some elements.In the absence of more restrictions, the element limited by sentence " including one ", is not arranged Except there is also other identical factors in the process, method, article or apparatus that includes the element.

Finally, it should be noted that the above is only the preferred embodiment of the present invention, it is merely to illustrate practical Novel technical solution, is not intended to limit the protection scope of the utility model.It is all the spirit and principles of the utility model it Interior done any modification, equivalent substitution, improvement and etc., are all contained in the protection scope of the utility model.

Claims

1. a kind of power circuit characterized by comprising input rectifying filter module, the first output rectification filter module, second Output rectification filter module, third output rectification filter module, voltage transformation conversion module, voltage feedback module and power supply control mould Block；

The input rectifying filter module, for filtering out the ripple in externally input first alternating current, after filtering out ripple First alternating current is converted to the first direct current, and is transferred to the armature winding of the voltage transformation conversion module；

The voltage transformation conversion module, for giving first DC power transmission to the energy supply control module by auxiliary winding, First direct current is turned according to the voltage control signal that energy supply control module transmits by armature winding and secondary windings Change AC energy into, it is by the first tap of the armature winding that corresponding second alternating current transmission is whole to first output Filter module is flowed, is rectified corresponding third alternating current transmission to second output by the second tap of the armature winding Filter module gives corresponding 4th alternating current transmission to third output rectification filter by the third tap of the armature winding Wave module, wherein the secondary windings uses the coiling of heap lap winding；

The first output rectification filter module for filtering out the ripple in second alternating current, and is converted to the second direct current The first pin of load is defeated by fax；The second output rectification filter module, for filtering out the wave in the third alternating current Line, and third DC power transmission is converted to the second pin of the load；The third output rectification filter module, for filtering Except the ripple in the 4th alternating current, and the 4th DC power transmission is converted to the third pin of the load；

The voltage feedback module, for according to the first output rectification filter module, the second output rectification filter mould The situation of change of block and the electric energy of third output rectification filter module output generates voltage feedback signal and is transferred to described Energy supply control module so that the energy supply control module according to the voltage feedback signal to the voltage transformation conversion module transmission pair The voltage control signal answered.

2. power circuit according to claim 1, which is characterized in that the input rectifying filter module, comprising: X2 electricity Appearance, common mode inductance, rectifier bridge stack and the first alminium electrolytic condenser；

The first end of the common mode inductance is exchanged with described first and is electrically connected, and second end and the first electric current of the rectifier bridge stack are defeated Enter end to be connected, the 4th end is connected with the second current input terminal of the rectifier bridge stack；

3. power circuit according to claim 2, which is characterized in that the input rectifying filter module further comprises: Fuse resistance, thermistor, varistor, first resistor and second resistance；

The first end of the fuse resistance is exchanged with described first and is electrically connected, the first end phase of second end and the thermistor Even, the second end of the thermistor is connected with the first segment of the common mode inductance；

Described first resistor one end is connected with the second end of the thermistor, one end phase of the other end and the second resistance Connect, the other end connection signal of the second resistance.

4. power circuit according to claim 1, which is characterized in that the first output rectification filter module, comprising: the One diode, the first Leaded Ceramic Disc Capacitor, the second Leaded Ceramic Disc Capacitor, the second alminium electrolytic condenser, 3rd resistor and the 4th resistance；

One end of first Leaded Ceramic Disc Capacitor and the 3rd resistor is connected with the cathode of the first diode, and the other end is equal Ground connection；

Described 4th resistance one end is connected with first tap, and the other end is connected with one end of second Leaded Ceramic Disc Capacitor, institute The other end for stating the second Leaded Ceramic Disc Capacitor is connected with the cathode of the first diode.

5. power circuit according to claim 1, which is characterized in that the second output rectification filter module, comprising: the Two diodes, third alminium electrolytic condenser, the 5th resistance, the 6th resistance and third Leaded Ceramic Disc Capacitor；

One end of 6th resistance is connected with the anode of second diode, and the one of the other end and the third Leaded Ceramic Disc Capacitor End is connected, and the other end of the third Leaded Ceramic Disc Capacitor is connected with the cathode of second diode；

And/or

The third output rectification filter module, comprising: third diode, the 4th alminium electrolytic condenser, the 7th resistance and the 4th porcelain Dielectric is held；

One end of 7th resistance is connected with the third tap, and the other end is connected with one end of the 4th Leaded Ceramic Disc Capacitor, The other end of 4th Leaded Ceramic Disc Capacitor is connected with the cathode of the third diode.

6. power circuit according to claim 4, which is characterized in that the voltage feedback module, comprising: the first glass glaze Submodule, the 5th Leaded Ceramic Disc Capacitor, controllable accurate source of stable pressure are fed back in resistance, the second glaze resistance, third glaze resistance, three tunnels And photoisolator；

The first end of first glaze resistance is connected with the output end of the third output rectification filter module, second end with The first end of second glaze resistance is connected, the second end of second glaze resistance and the 5th Leaded Ceramic Disc Capacitor One end is connected, and the other end of the 5th Leaded Ceramic Disc Capacitor is connected with the first end of the third glaze resistance, the third glass The second end of glass glaze resistance is connected with three tunnel feedback submodule；

Three tunnel feedback submodule respectively with the cathode of the first diode, the second output rectification filter module it is defeated Outlet is connected with the output end of the third output rectification filter module, is used for the first output rectification filter module, institute The electric energy for stating the second output rectification filter module and third output rectification filter module output is transferred to the controllable accurate Source of stable pressure；

The cathode of the controllable accurate source of stable pressure is connected with the second end of second glaze resistance, with reference to pole and three tunnel It feeds back submodule to be connected, plus earth, for carrying out steady pressure treatment to the electric energy of three tunnel feedback submodule transmission, and will be steady Electric energy after pressure is transferred to the photoisolator；

The anode of the photophore of the photoisolator is connected with the cathode of the controllable accurate source of stable pressure, cathode and described first The second end of glaze resistance is connected, and the light-receiving device of the photoisolator is connected with the energy supply control module, for passing through The photophore according to the corresponding optical signal of power output after pressure stabilizing, and by the light-receiving device according to the optical signal to institute It states energy supply control module and transmits the voltage feedback signal.

7. power circuit according to claim 6, which is characterized in that

Feed back submodule in three tunnel, comprising: the 4th glaze resistance, the 5th glaze resistance, the 6th glaze resistance, the 7th Glaze resistance, the 8th glaze resistance, the 9th glaze resistance, the tenth glaze resistance, the 11st glaze resistance；

The first end of 4th glaze resistance and the 5th glaze resistance with the third output rectification filter mould The output end of block is connected, and second end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of 6th glaze resistance and the 7th glaze resistance with the second output rectification filter mould The output end of block is connected, and second one end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of 7th glaze resistance and the 8th glaze resistance with the cathode phase of the first diode Even, second end is extremely connected with the reference of the controllable accurate source of stable pressure；

The first end of tenth glaze resistance and the 11st glaze resistance with the 4th glaze resistance Second end is connected, and second end is grounded；

8. power circuit according to claim 6, which is characterized in that

The output end and the power supply control chip of the input terminal of the power module and the armature winding, the auxiliary winding It is connected, for powering for the power supply control chip；

One end connection signal of 6th Leaded Ceramic Disc Capacitor, the other end is connected with the power supply control chip input pin, uses In the voltage feedback signal of the light-receiving device transmission of the photoisolator is transferred to the power supply control chip, so that institute It states power supply control chip and is believed according to the voltage feedback signal to the corresponding voltage control of voltage transformation conversion module transmission Number；

9. power circuit according to claim 8, which is characterized in that the power module, comprising: the 7th Leaded Ceramic Disc Capacitor, 12nd glaze resistance, the 13rd glaze resistance, the 14th glaze resistance, the 15th glaze resistance, the 16th glass Glass glaze resistance, the 5th alminium electrolytic condenser and the 4th diode；

12nd glaze resistance, the 13rd glaze resistance, the 14th glaze resistance and the described tenth Five glaze resistances, be sequentially connected in series the input rectifying filter module output end and the power supply control chip for fulgurite Between foot；

One end of 7th Leaded Ceramic Disc Capacitor is grounded, and the other end is connected to the 14th glaze resistance and the 15th glass Between glass glaze resistance；

The anode of 5th alminium electrolytic condenser is connected to the 14th glaze resistance and the 15th glaze resistance Between, cathode ground connection；

The anode of 4th diode is connected with the output end of the auxiliary winding, cathode and the 16th glaze resistance First end be connected, the second end of the 16th glaze resistance is connected to the 14th glaze resistance and the described tenth Between five glaze resistances；

And/or

The first end of 17th glaze resistance and the 18th glaze resistance with the power supply control chip Chip-select pin is connected, and second end is all connected with signal ground；

And/or

The energy supply control module further comprises: the 19th glaze resistance, the 20th glaze resistance, the 21st glass Glass glaze resistance, the 8th Leaded Ceramic Disc Capacitor and the 5th diode；

The first end of 19th glaze resistance is connected with the input terminal of the secondary windings, second end and the described 20th The first end of glaze resistance is connected, the second end and the cathode phase of the 5th diode of the 20th glaze resistance Even, the anode of the 5th diode is connected with the drain pin of the power supply control chip；

The first end of 21st glaze resistance is connected with the input terminal of the secondary windings, second end and the described tenth The second end of nine glaze resistances is connected；

One end of 8th Leaded Ceramic Disc Capacitor is connected with the input terminal of the secondary windings, the other end and the 19th glass glaze The second end of resistance is connected.

10. according to claim 1 to any power circuit in 9, which is characterized in that further comprise: the first safety electricity Hold and the second safety capacitor；

One end of the first safety capacitor is connected with the one end on the connection signal of auxiliary winding ground, the other end and described the One end of two safety capacitors is connected, the other end ground connection of the second safety capacitor.