CN205754026U - Single-cylinder air-cooled diesel engine voltage regulating rectifier device - Google Patents
Single-cylinder air-cooled diesel engine voltage regulating rectifier device Download PDFInfo
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Abstract
The utility model discloses a kind of single-cylinder air-cooled diesel engine voltage regulating rectifier device, including switching power circuit, bypass power supply circuit and bypass control circuit, described switching power circuit exports after the voltage that charge coil exports is carried out voltage regulating rectifier, described bypass power supply circuit exports after the voltage that charge coil exports is carried out rectifying and wave-filtering, described bypass control circuit is for detecting the output voltage of bypass power supply circuit, and the output voltage detected is compared with setting value, disconnect bypass power supply circuit.This voltage regulating rectifier device input voltage range is big; output voltage ripple is little; input voltage is less than when setting output voltage; can directly export the voltage lower than setting value; effectively solve the function that diesel engine cannot cannot be protected after starting or starting on startup in the case of without storage battery automatically; improve storage battery charging quality simultaneously, improve storage battery service life.
Description
Technical field
This utility model relates to diesel engine arts, particularly relates to a kind of single-cylinder air-cooled diesel engine voltage regulating rectifier device.
Background technology
Existing small air-cooled diesel engine mainly uses mechanical type injection pump oil-break to stop working, and oil-break mode mainly has: 1. throttle combination controls injection pump, and 2. injection pump carries electromagnetic valve switch.
Electromagnetic valve switch state is carried at injection pump; diesel engine just must can be opened electromagnetic valve switch and start when being furnished with storage battery; this shortcoming must have storage battery when being and start; or manually use mechanical system to open electromagnetic valve switch to start; start because manually using mechanical system to open electromagnetic valve switch; this is a pressure action; if there is no artificial homing action; this switch can positive opening always; electromagnetic valve switch will lose function; operation complexity, and automatic protection functions can not be realized in normal work.
Existing voltage regulating rectifier device input voltage range is little, and output voltage ripple is big, and when charging storage battery, rush of current is big, can shorten the storage battery life-span.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art; a kind of single-cylinder air-cooled diesel engine voltage regulating rectifier device is provided; this voltage regulating rectifier device input voltage range is big; output voltage ripple is little; input voltage, less than when setting output voltage, can directly export the voltage lower than setting value, effectively solve the function that diesel engine cannot cannot be protected after starting or starting on startup in the case of without storage battery automatically; improve storage battery charging quality simultaneously, improve storage battery service life.
The purpose of this utility model is achieved in that a kind of single-cylinder air-cooled diesel engine voltage regulating rectifier device, including switching power circuit, bypass power supply circuit and bypass control circuit, described switching power circuit exports after the voltage that charge coil exports is carried out voltage regulating rectifier, described bypass power supply circuit exports after the voltage that charge coil exports is carried out rectifying and wave-filtering, described bypass control circuit is for detecting the output voltage of bypass power supply circuit, and the output voltage detected is compared with setting value, disconnect bypass power supply circuit.
Described bypass power supply circuit includes the 10th diode D10, the 11st diode D11 and the 5th filter capacitor C5, the described positive pole of the 10th diode D10 is connected with the first input interface of voltage regulating rectifier device, the described positive pole of the 11st diode D11 is connected with the second input interface of voltage regulating rectifier device, the negative pole of described 10th diode D10, negative pole all positive poles with the 5th filter capacitor C5 of the 11st diode D11 are connected, and the positive pole of described 5th filter capacitor C5 is connected with the first output interface P1 of voltage regulating rectifier device.The negative pole of described 5th filter capacitor C5 is connected with the second output interface P3 of voltage regulating rectifier device respectively.The two ends of the 5th filter capacitor C5 are parallel with resistance R51K.Being provided with the 3rd diode D3 between two output interfaces of voltage regulating rectifier device, the positive pole of described 3rd diode D3 is connected with the second output interface P3 of voltage regulating rectifier device, and the negative pole of described 3rd diode D3 is connected with the first output interface P1 of voltage regulating rectifier device.
nullDescribed bypass control circuit includes the 4th switching tube Q4、2nd switching tube Q2、2nd stabilivolt DW2，The described base stage of the 4th switching tube Q4 is connected with one end of the 23rd resistance R23，The other end ground connection of the 23rd resistance R23，The base stage of described 4th switching tube Q4 is connected with the first output interface of voltage regulating rectifier device through resistance，The grounded emitter of described 4th switching tube Q4，The colelctor electrode of described 4th switching tube Q4 respectively with the negative pole of the 2nd stabilivolt DW2、One end of 10th resistance R10、One end of 20th resistance R20 connects，The plus earth of described 2nd stabilivolt DW2，The other end of the 10th resistance R10 is connected with the first output interface of voltage regulating rectifier device，The other end of the 20th resistance R20 and the grid of the 2nd switching tube Q2 connect，The source ground of described 2nd switching tube Q2，The drain electrode of described 2nd switching tube Q2 is connected with the second output interface P3 of voltage regulating rectifier device.
nullDescribed switching power circuit includes power circuit、Input rectifying filter circuit、Power conversion circuit、Pwm control circuit、Output rectifier and filter、Voltage feedback circuit、Current sampling circuit，Described power circuit is for powering for pwm control circuit，The input of described input rectifying filter circuit is connected with the input interface of voltage regulating rectifier device，The described outfan of input rectifying filter circuit is connected with the input of power conversion circuit，The outfan of power conversion circuit is connected with output rectifier and filter，The input of described voltage feedback circuit is connected with the outfan of current rectifying and wave filtering circuit，The outfan of described voltage feedback circuit is connected with the first input end of pwm control circuit，The input of described current sampling circuit is connected with power conversion circuit，The outfan of described current sampling circuit is connected with the second input of pwm control circuit，The outfan of described pwm control circuit is connected with power conversion circuit.
It is provided with the 2nd diode D2 between first outfan and first output interface of voltage regulating rectifier device of described switching power circuit, the described positive pole of the 2nd diode D2 is connected with the first outfan of switching power circuit, and the described negative pole of the 2nd diode D2 is connected with the first output interface of voltage regulating rectifier device.
Described input rectifying filter circuit includes rectifier bridge stack D4 and the 4th filter capacitor C4, two inputs of described rectifier bridge stack D4 are connected with two input interfaces of voltage regulating rectifier device respectively, first output head grounding of described rectifier bridge stack D4, second outfan of described rectifier bridge stack D4 the first end with the positive pole of the 4th filter capacitor C4, the armature winding of high frequency transformer B1 respectively is connected, the minus earth of described 4th filter capacitor C4.
Described power conversion circuit includes high frequency transformer B1, the 1st switching tube Q1.High frequency transformer B1 is provided with armature winding, secondary windings, control power supply winding.nullSecond end of the armature winding of high frequency transformer B1 and the drain electrode of the 1st switching tube Q1、The input of RC current rectifying and wave filtering circuit connects，The outfan of RC current rectifying and wave filtering circuit respectively with the outfan of input rectifying filter circuit、First end of the armature winding of high frequency transformer B1 connects，The secondary windings of high frequency transformer B1 is connected with the input of output rectifier and filter，The source electrode of described 1st switching tube Q1 respectively with one end of the 18th resistance R18、One end of 14th resistance R14、The positive pole of the 4th stabilivolt DW4 connects，The other end ground connection of described 18th resistance R18，The other end of the 14th resistance R14、The negative pole of the 4th stabilivolt DW4 all grids with the 1st switching tube Q1 are connected，The grid of the 1st switching tube Q1 is connected with the outfan of PWM chip U1 through the 13rd resistance R13.The source electrode of described 1st switching tube Q1 and one end of the 22nd resistance R22 connect, and the other end of the 22nd resistance R22 is connected with one end of the 10th electric capacity C10, the ISEN end of PWM chip U1 respectively, the other end ground connection of the 10th electric capacity C10.
Described RC current rectifying and wave filtering circuit includes the 5th diode D5, the 4th resistance R4, the 2nd electric capacity C2, the positive pole of described 5th diode D5 is connected with the second end of armature winding, the drain electrode of the 1st switching tube Q1 of high frequency transformer B1 respectively, the negative pole of the 5th diode D5 is connected with one end, one end of the 2nd electric capacity C2 of the 4th resistance R4 respectively, and the other end of the 4th resistance R4, the other end all first ends with the outfan of input rectifying filter circuit, the armature winding of high frequency transformer B1 of the 2nd electric capacity C2 are connected.
Described output rectifier and filter includes the 1st diode D1, the 3rd filter capacitor C3, the positive pole of described 1st diode D1 is connected with secondary windings second end of high frequency transformer B1, the negative pole of described 1st diode D1 is connected with positive pole, one end of the 5th resistance R5 of the 3rd filter capacitor C3 respectively, and the negative pole of described 3rd filter capacitor C3, the other end of the 5th resistance R5, first end of secondary windings of high frequency transformer B1 are all connected with reference to ground.Described output rectifier and filter also includes the 1st resistance R1, the 1st electric capacity C1, in parallel with the 1st diode D1 after the 1st resistance R1 and the 1st electric capacity C1 series connection.
Described voltage feedback circuit includes the 7th resistance R7, photoelectrical coupler IC1, the 1st stabilivolt DW1, one end of described 7th resistance R7 is connected with the outfan of output rectifier and filter, the described other end of the 7th resistance R7 is connected with the first input end of photoelectrical coupler IC1, second input of described photoelectrical coupler IC1 and the negative pole of the 1st stabilivolt DW1 connect, and the positive pole of described 1st stabilivolt DW1 connects with reference to ground.Stabilivolt DW1 determines the size of output voltage.The outfan of described photoelectrical coupler (IC1) is connected with pwm control circuit.First outfan of described photoelectrical coupler IC1 is connected with the COMP end of PWM chip U1, second outfan of described photoelectrical coupler IC1 is connected with one end, the base stage of the 3rd switching tube Q3 of the 21st resistance R21 respectively, the other end ground connection of described 21st resistance R21, the grounded emitter of described 3rd switching tube Q3, the colelctor electrode of the 3rd switching tube Q3 is connected with the VFB end of PWM chip U1, one end of the 15th resistance R15, the positive pole of the 7th electric capacity C7 respectively, the minus earth of the 7th electric capacity C7, the other end of the 15th resistance R15 is connected with the VREF end of PWM chip U1.The VREF end of PWM chip U1 and one end of the 16th resistance R16 connect, and the other end of the 16th resistance R16 is connected with RT/CT end, one end of the 8th electric capacity C8 of PWM chip U1 respectively, the other end ground connection of the 8th electric capacity C8.
Described switching power circuit is provided with current-limiting circuit, and for preferably limiting maximum output current, protection storage battery causes damage because electric current is excessive.
nullDescribed current-limiting circuit includes photoelectrical coupler IC1、First a reference source D12、30th resistance R30，The outfan of described photoelectrical coupler IC1 is connected with pwm control circuit，The first input end of described photoelectrical coupler IC1 is connected with the outfan of output rectifier and filter through the 7th resistance R7，Second input of described photoelectrical coupler IC1 and the negative electrode of the first a reference source D12 connect，The anode of described first a reference source D12 connects with reference to ground，The reference edge of the first a reference source D12 respectively with one end of the 28th resistance R28、One end of 29th resistance R29、One end of 13rd electric capacity C13 connects，The other end of described 13rd electric capacity C13 connects with reference to ground，The other end of described 29th resistance R29 respectively with one end of the 30th resistance R30、Second output interface of voltage regulating rectifier device connects，The other end of the 30th resistance R30 connects with reference to ground，The other end of described 28th resistance R28 and one end of the 25th resistance R25、One end of 26th resistance R26、The positive pole of the 12nd electric capacity C12、The negative electrode of the second a reference source D13 connects，The negative pole of the 12nd electric capacity C12、The anode of the second a reference source D13 is all connected with reference to ground，The other end of the 26th resistance R26 respectively with one end of the 27th resistance R27、The reference edge of the second a reference source D13 connects，The other end of the 27th resistance R27 connects with reference to ground，The other end of the 25th resistance R25 is connected with the outfan of output rectifier and filter.
Described power circuit includes start-up circuit and PWM power supply circuits, the input of described start-up circuit is connected with the outfan of input rectifying filter circuit, the outfan of described start-up circuit is connected with the power end of pwm control circuit, the input of described PWM power supply circuits is connected with the control power supply winding of the high frequency transformer of power conversion circuit, and the described outfan of PWM power supply circuits is connected with the power end of pwm control circuit.Described start-up circuit includes the 2nd resistance R2, the 3rd resistance R3, the 11st resistance R11, the 12nd resistance R12, described 2nd resistance R2 and the 3rd resistance R3 is in parallel, described 11st resistance R11 and the 12nd resistance R12 is in parallel, described one end of 2nd resistance R2 is connected with the outfan of input rectifying filter circuit, the other end of described 2nd resistance R2 and one end of the 11st resistance R11 connect, and the other end of the 11st resistance R11 is connected with the power end of pwm control circuit.Described PWM power supply circuits include the 8th diode D8, 6th filter capacitor C6, 3rd stabilivolt DW3, the positive pole of described 8th diode D8 is connected with second end controlling power supply winding of high frequency transformer, the negative pole of the 8th diode D8 and one end of the 17th resistance R17 connect, the other end of the 17th resistance R17 respectively with one end of the 19th resistance R19, the positive pole of the 6th filter capacitor C6, one end of 11st electric capacity C11, the negative pole of the 3rd stabilivolt DW3 connects, the negative pole of the 6th filter capacitor C6, the other end of the 11st electric capacity C11, the positive pole of the 3rd stabilivolt DW3, the first equal ground connection of end controlling power supply winding of high frequency transformer, the other end of the 19th resistance R19 is connected with the power end of pwm control circuit.
The beneficial effects of the utility model are: the charge coil that diesel engine carries output voltage under starting rotating speed is the lowest, switching power circuit can not be allowed to start, therefore this utility model design bypass power supply circuit, when diesel engine starting, powered to electromagnetic valve switch by bypass power supply circuit, bypass power supply circuit of the present utility model improves the output voltage started under rotating speed, meets electromagnetic valve switch (running voltage of electromagnetic valve switch is at DC8V ~ 15V) under startup rotating speed and normally works.Start rear voltage to raise, when bypass power supply circuit output voltage reaches setting value, bypass control circuit controls bypass power supply circuit and disconnects, now, charge coil provides voltage to switching power circuit in diesel engine operating rotational speed range, and charging for electrical appliance and storage battery after voltage regulating rectifier provides power supply.Use said structure, make voltage that charge coil can directly export by voltage regulating rectifier device of the present utility model on startup for electromagnetic valve after bypass power supply circuit rectifies, when diesel engine normally works to the voltage of charge coil output after switching power circuit voltage regulating rectifier for solenoid valve and storage battery charging.When design bypass power supply circuit is to solve electromotor startup, the idle state of fuel solenoid valve.
This utility model is not required to artificially open the action of electromagnetic valve switch; upon start up; the charge coil of diesel engine self will pass through to provide power supply for electromagnetic valve switch after voltage regulating rectifier device processes by output voltage; open electromagnetic valve switch; diesel engine is allowed normally to work; when engine oil pressure occurs not enough, oil pressure sensor will be by controlling electromagnetic valve switch on/off, it is achieved protection.
Voltage regulating rectifier device of the present utility model uses switching power circuit of the present utility model; make voltage regulating rectifier device input voltage range big; output voltage ripple is little; input voltage is less than when setting output voltage; can directly export the voltage lower than setting value; effectively solve the function that diesel engine cannot cannot be protected after starting or starting on startup in the case of without storage battery automatically, improve storage battery charging quality simultaneously, improve storage battery service life.
The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of single-cylinder air-cooled diesel engine voltage regulating rectifier device of the present utility model.
Detailed description of the invention
See Fig. 1, a kind of single-cylinder air-cooled diesel engine voltage regulating rectifier device, including switching power circuit, bypass power supply circuit 2 and bypass control circuit 3, described switching power circuit exports after the voltage that charge coil exports is carried out voltage regulating rectifier, described bypass power supply circuit exports after the voltage that charge coil exports is carried out rectifying and wave-filtering, described bypass control circuit is for detecting the output voltage of bypass power supply circuit, and the output voltage detected is compared with setting value, disconnect bypass power supply circuit, make the output interface P1 of bypass power supply circuit and voltage regulating rectifier device, P3 disconnects.Input interface P2, P4 of voltage regulating rectifier device connects charge coil, and output interface P1, P3 of voltage regulating rectifier device is solenoid valve and storage battery charging.The effect of storage battery be electrically actuated be for start motor provide power supply, storage battery can be need not during hand starting.Bypass power supply circuit is mainly used in powering fuel solenoid valve when electromotor starts.When design bypass power supply circuit is to solve electromotor startup, the idle state of fuel solenoid valve.
Described bypass power supply circuit includes the 10th diode D10, the 11st diode D11 and the 5th filter capacitor C5, the described positive pole of the 10th diode D10 is connected with the first input interface of voltage regulating rectifier device, the described positive pole of the 11st diode D11 is connected with the second input interface of voltage regulating rectifier device, and the negative pole of described 10th diode D10, negative pole all positive poles with the 5th filter capacitor C5 of the 11st diode D11 are connected.The positive pole of described 5th filter capacitor C5 is connected with the first output interface P1 of voltage regulating rectifier device.The negative pole of described 5th filter capacitor C5 is connected with the second output interface P3 of voltage regulating rectifier device respectively.The two ends of the 5th filter capacitor C5 are parallel with resistance R51K.Resistance R51K discharges to C5.Being provided with the 3rd diode D3 between two output interfaces of voltage regulating rectifier device, the described positive pole of the 3rd diode D3 is connected with the second output interface of voltage regulating rectifier device, and the described negative pole of the 3rd diode D3 is connected with the first output interface of voltage regulating rectifier device.D3 is fly-wheel diode, for providing discharge loop to electromagnetic valve.
nullDescribed bypass control circuit includes the 4th switching tube Q4、2nd switching tube Q2、2nd stabilivolt DW2，The described base stage of the 4th switching tube Q4 is connected with one end of the 23rd resistance R23，The other end ground connection of the 23rd resistance R23，The base stage of described 4th switching tube Q4 is connected with the first output interface of voltage regulating rectifier device through resistance，The grounded emitter of described 4th switching tube Q4，The colelctor electrode of described 4th switching tube Q4 respectively with the negative pole of the 2nd stabilivolt DW2、One end of 10th resistance R10、One end of 20th resistance R20 connects，The plus earth of described 2nd stabilivolt DW2，The other end of the 10th resistance R10 is connected with the first output interface of voltage regulating rectifier device，The other end of the 20th resistance R20 and the grid of the 2nd switching tube Q2 connect，The source ground of described 2nd switching tube Q2，The described drain electrode of the 2nd switching tube Q2 is connected with the second output interface of voltage regulating rectifier device.
nullDescribed switching power circuit includes power circuit、Input rectifying filter circuit 11、Power conversion circuit 12、Pwm control circuit 13、Output rectifier and filter 14、Voltage feedback circuit 15、Current sampling circuit，Described power circuit is for powering for pwm control circuit，The input of described input rectifying filter circuit is connected with the input interface of voltage regulating rectifier device，The described outfan of input rectifying filter circuit is connected with the input of power conversion circuit，The outfan of power conversion circuit is connected with output rectifier and filter，The input of described voltage feedback circuit is connected with the outfan of current rectifying and wave filtering circuit，The outfan of described voltage feedback circuit is connected with the first input end of pwm control circuit，The input of described current sampling circuit is connected with power conversion circuit，The outfan of described current sampling circuit is connected with the second input of pwm control circuit，The outfan of described pwm control circuit is connected with power conversion circuit.
It is provided with the 2nd diode D2 between first outfan and first output interface of voltage regulating rectifier device of switching power circuit, the described positive pole of the 2nd diode D2 is connected with the first outfan of switching power circuit, and the described negative pole of the 2nd diode D2 is connected with the first output interface of voltage regulating rectifier device.The effect of D2 is to be separated with bypass power supply circuit by switching power circuit.
Described input rectifying filter circuit includes rectifier bridge stack D4 and the 4th filter capacitor C4, two inputs of described rectifier bridge stack D4 are connected with two input interfaces of voltage regulating rectifier device respectively, first output head grounding of described rectifier bridge stack D4, second outfan of described rectifier bridge stack D4 the first end with the positive pole of the 4th filter capacitor C4, the armature winding of high frequency transformer B1 respectively is connected, the minus earth of described 4th filter capacitor C4.
Described power conversion circuit includes high frequency transformer B1, the 1st switching tube Q1.High frequency transformer B1 is provided with armature winding, secondary windings, control power supply winding.nullSecond end of the armature winding of high frequency transformer B1 and the drain electrode of the 1st switching tube Q1、The input of RC current rectifying and wave filtering circuit connects，The outfan of RC current rectifying and wave filtering circuit respectively with the outfan of input rectifying filter circuit、First end of the armature winding of high frequency transformer B1 connects，The secondary windings of high frequency transformer B1 is connected with the input of output rectifier and filter，The source electrode of described 1st switching tube Q1 respectively with one end of the 18th resistance R18、One end of 14th resistance R14、The positive pole of the 4th stabilivolt DW4 connects，The other end ground connection of described 18th resistance R18，The other end of the 14th resistance R14、The negative pole of the 4th stabilivolt DW4 all grids with the 1st switching tube Q1 are connected，The grid of the 1st switching tube Q1 is connected with the outfan of PWM chip U1 through the 13rd resistance R13.The source electrode of described 1st switching tube Q1 and one end of the 22nd resistance R22 connect, and the other end of the 22nd resistance R22 is connected with one end of the 10th electric capacity C10, the ISEN end of PWM chip U1 respectively, the other end ground connection of the 10th electric capacity C10.DW4 act as protection Q1, prevents overtension between GS, damages Q1.The effect of D9 is to discharge to the junction capacity of Q1.
Current sampling circuit includes resistance R18, resistance R22, electric capacity C10.R18 is sample resistance, R22 Yu C10 constitutes a RC wave filter；When the voltage on R18 is more than 1V, just changes the dutycycle of PWM, thus control whole circuit.
Described RC current rectifying and wave filtering circuit includes the 5th diode D5, the 4th resistance R4, the 2nd electric capacity C2, the positive pole of described 5th diode D5 is connected with the second end of armature winding, the drain electrode of the 1st switching tube Q1 of high frequency transformer B1 respectively, the negative pole of the 5th diode D5 is connected with one end, one end of the 2nd electric capacity C2 of the 4th resistance R4 respectively, and the other end of the 4th resistance R4, the other end all first ends with the outfan of input rectifying filter circuit, the armature winding of high frequency transformer B1 of the 2nd electric capacity C2 are connected.The acting as of D5, R4, C2 releases energy to transformator, also reaches the purpose that magnetic field resets simultaneously.
Described output rectifier and filter includes the 1st diode D1, the 3rd filter capacitor C3, the positive pole of described 1st diode D1 is connected with secondary windings second end of high frequency transformer B1, the negative pole of described 1st diode D1 is connected with positive pole, one end of the 5th resistance R5 of the 3rd filter capacitor C3 respectively, and the negative pole of described 3rd filter capacitor C3, the other end of the 5th resistance R5, first end of secondary windings of high frequency transformer B1 are all connected with reference to ground.The acting as of R5, to one the little load of Switching Power Supply band, prevents Switching Power Supply powered on moment output voltage from crossing punching.Described output rectifier and filter also includes the 1st resistance R1, the 1st electric capacity C1, in parallel with the 1st diode D1 after the 1st resistance R1 and the 1st electric capacity C1 series connection.R1 Yu C1 forms absorption circuit, absorbs the spike that secondary windings produces.
Described voltage feedback circuit includes the 7th resistance R7, photoelectrical coupler IC1, the 1st stabilivolt DW1, one end of described 7th resistance R7 is connected with the outfan of output rectifier and filter, the described other end of the 7th resistance R7 is connected with the first input end of photoelectrical coupler IC1, second input of described photoelectrical coupler IC1 and the negative pole of the 1st stabilivolt DW1 connect, and the positive pole of described 1st stabilivolt DW1 connects with reference to ground.Stabilivolt DW1 determines the size of output voltage.First outfan of described photoelectrical coupler IC1 is connected with the COMP end of PWM chip U1, second outfan of described photoelectrical coupler IC1 is connected with one end, the base stage of the 3rd switching tube Q3 of the 21st resistance R21 respectively, the other end ground connection of described 21st resistance R21, the grounded emitter of described 3rd switching tube Q3, the colelctor electrode of the 3rd switching tube Q3 is connected with the VFB end of PWM chip U1, one end of the 15th resistance R15, the positive pole of the 7th electric capacity C7 respectively, the minus earth of the 7th electric capacity C7, the other end of the 15th resistance R15 is connected with the VREF end of PWM chip U1.The VREF end of PWM chip U1 and one end of the 16th resistance R16 connect, and the other end of the 16th resistance R16 is connected with RT/CT end, one end of the 8th electric capacity C8 of PWM chip U1 respectively, the other end ground connection of the 8th electric capacity C8.
Described pwm control circuit uses model to be PWM chip U1 of UC3843.
Described switching power circuit is provided with current-limiting circuit 16, and for preferably limiting maximum output current, protection storage battery causes damage because electric current is excessive.
nullDescribed current-limiting circuit includes photoelectrical coupler IC1、First a reference source D12、30th resistance R30，The outfan of described photoelectrical coupler IC1 is connected with pwm control circuit，The first input end of described photoelectrical coupler IC1 is connected with the outfan of output rectifier and filter through the 7th resistance R7，Second input of described photoelectrical coupler IC1 and the negative electrode of the first a reference source D12 connect，The anode of described first a reference source D12 connects with reference to ground，The reference edge of the first a reference source D12 respectively with one end of the 28th resistance R28、One end of 29th resistance R29、One end of 13rd electric capacity C13 connects，The other end of described 13rd electric capacity C13 connects with reference to ground，The other end of described 29th resistance R29 respectively with one end of the 30th resistance R30、Second output interface of voltage regulating rectifier device connects，The other end of the 30th resistance R30 connects with reference to ground，The other end of described 28th resistance R28 and one end of the 25th resistance R25、One end of 26th resistance R26、The positive pole of the 12nd electric capacity C12、The negative electrode of the second a reference source D13 connects，The negative pole of the 12nd electric capacity C12、The anode of the second a reference source D13 is all connected with reference to ground，The other end of the 26th resistance R26 respectively with one end of the 27th resistance R27、The reference edge of the second a reference source D13 connects，The other end of the 27th resistance R27 connects with reference to ground，The other end of the 25th resistance R25 is connected with the outfan of output rectifier and filter.R25, R26, R27, D13, C12 form power circuit, act as providing a reference source.C13 is filter action, it is to avoid occur that crest voltage causes misoperation, makes system more stable.
Described power circuit includes start-up circuit 17 and PWM power supply circuits 18, the input of described start-up circuit is connected with the outfan of input rectifying filter circuit, the outfan of described start-up circuit is connected with the power end of pwm control circuit, the input of described PWM power supply circuits is connected with the control power supply winding of the high frequency transformer of power conversion circuit, and the described outfan of PWM power supply circuits is connected with the power end of pwm control circuit.Described start-up circuit includes the 2nd resistance R2, the 3rd resistance R3, the 11st resistance R11, the 12nd resistance R12, described 2nd resistance R2 and the 3rd resistance R3 is in parallel, described 11st resistance R11 and the 12nd resistance R12 is in parallel, described one end of 2nd resistance R2 is connected with the outfan of input rectifying filter circuit, the other end of described 2nd resistance R2 and one end of the 11st resistance R11 connect, and the other end of the 11st resistance R11 is connected with the power end of pwm control circuit.Described PWM power supply circuits include the 8th diode D8, 6th filter capacitor C6, 3rd stabilivolt DW3, the positive pole of described 8th diode D8 is connected with second end controlling power supply winding of high frequency transformer, the negative pole of the 8th diode D8 and one end of the 17th resistance R17 connect, the other end of the 17th resistance R17 respectively with one end of the 19th resistance R19, the positive pole of the 6th filter capacitor C6, one end of 11st electric capacity C11, the negative pole of the 3rd stabilivolt DW3 connects, the negative pole of the 6th filter capacitor C6, the other end of the 11st electric capacity C11, the positive pole of the 3rd stabilivolt DW3, the first equal ground connection of end controlling power supply winding of high frequency transformer, the other end of the 19th resistance R19 is connected with the power end of pwm control circuit.
Operation principle of the present utility model: the alternating current that charge coil is produced by bypass power supply circuit supplies electromagnetic valve after D10, D11 and C5 rectifying and wave-filtering.Bypass control circuit, by the control to metal-oxide-semiconductor Q2, realizes the control to bypass circuit；When voltage is less than setting value, Q2 turns on, and controls bypass power supply circuit and accesses；When voltage is more than or equal to setting value, Q2 turns off, and controls bypass power supply circuit and disconnects, and after bypass power supply circuit disconnects, the switching power circuit with bypass power supply circuit in parallel continues power supply to electromagnetic valve.
First output interface of voltage regulating rectifier device is current output terminal, and the second output interface of voltage regulating rectifier device is current input terminal.The second output interface sampled resistance R30 of voltage regulating rectifier device connects with reference to ground, when output electric current raises, sampling resistor R30 both end voltage raises, the reference voltage terminal of the first a reference source D12 increases to over setting value, the first a reference source D12 conducting, and photoelectrical coupler IC1 turns on, the pin VFB of PWM chip U1 is pulled low, when U1 detects that VFB is pulled low, just change the dutycycle of the PWM of output, reach to limit the purpose of output electric current.When output voltage voltage raises, and the 1st stabilivolt DW1 both end voltage increases to over setting value, the 1st stabilivolt DW1 conducting, photoelectrical coupler IC1 turns on, and the pin VFB of PWM chip U1 is pulled low, when U1 detects that VFB is pulled low, just change the dutycycle of the PWM of output, make output voltage remain stable.Changing the dutycycle of PWM, just change the size of output, when change in voltage, output changes, and electric current is constant, and voltage will change, and when the current changes, output changes, and voltage is constant, and electric current will change, thus realizes the purpose of pressure regulation, current limliting.
This utility model is not limited solely to above-described embodiment, carries out the technical scheme of few modifications in the case of without departing substantially from technical solutions of the utility model spirit, should fall into protection domain of the present utility model.
Claims (10)
1. a single-cylinder air-cooled diesel engine voltage regulating rectifier device, it is characterized in that: include switching power circuit, bypass power supply circuit and bypass control circuit, described switching power circuit exports after the voltage that charge coil exports is carried out voltage regulating rectifier, described bypass power supply circuit exports after the voltage that charge coil exports is carried out rectifying and wave-filtering, described bypass control circuit is for detecting the output voltage of bypass power supply circuit, and the output voltage detected is compared with setting value, disconnect bypass power supply circuit.
Single-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 1, it is characterized in that: described bypass power supply circuit includes the 10th diode (D10), 11st diode (D11) and the 5th filter capacitor (C5), the positive pole of described 10th diode (D10) is connected with the first input interface of voltage regulating rectifier device, the positive pole of described 11st diode (D11) is connected with the second input interface of voltage regulating rectifier device, the negative pole of described 10th diode (D10), the negative pole of the 11st diode (D11) all positive poles with the 5th filter capacitor (C5) are connected, the positive pole of described 5th filter capacitor (C5) is connected with the first output interface of voltage regulating rectifier device, the negative pole of described 5th filter capacitor (C5) is connected with the second output interface of voltage regulating rectifier device.
nullSingle-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 1，It is characterized in that: described bypass control circuit includes the 4th switching tube (Q4)、2nd switching tube (Q2)、2nd stabilivolt (DW2)，The described base stage of the 4th switching tube (Q4) is connected with one end of the 23rd resistance (R23)，The other end ground connection of the 23rd resistance (R23)，The base stage of described 4th switching tube (Q4) is connected with the first output interface of voltage regulating rectifier device through resistance，The grounded emitter of described 4th switching tube (Q4)，The colelctor electrode of described 4th switching tube (Q4) respectively with the negative pole of the 2nd stabilivolt (DW2)、One end of 10th resistance (R10)、One end of 20th resistance (R20) connects，The plus earth of described 2nd stabilivolt (DW2)，The other end of the 10th resistance (R10) is connected with the first output interface of voltage regulating rectifier device，The other end of the 20th resistance (R20) and the grid of the 2nd switching tube (Q2) connect，The source ground of described 2nd switching tube (Q2)，The drain electrode of described 2nd switching tube (Q2) is connected with the second output interface of voltage regulating rectifier device.
nullSingle-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 1，It is characterized in that: described switching power circuit includes power circuit、Input rectifying filter circuit、Power conversion circuit、Pwm control circuit、Output rectifier and filter、Voltage feedback circuit、Current sampling circuit，Described power circuit is for powering for pwm control circuit，The input of described input rectifying filter circuit is connected with the input interface of voltage regulating rectifier device，The described outfan of input rectifying filter circuit is connected with the input of power conversion circuit，The outfan of power conversion circuit is connected with output rectifier and filter，The input of described voltage feedback circuit is connected with the outfan of current rectifying and wave filtering circuit，The outfan of described voltage feedback circuit is connected with the first input end of pwm control circuit，The input of described current sampling circuit is connected with power conversion circuit，The outfan of described current sampling circuit is connected with the second input of pwm control circuit，The outfan of described pwm control circuit is connected with power conversion circuit.
nullSingle-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 4，It is characterized in that: described power conversion circuit includes high frequency transformer (B1)、1st switching tube (Q1)，Second end of the armature winding of high frequency transformer (B1) and the drain electrode of the 1st switching tube (Q1)、The input of RC current rectifying and wave filtering circuit connects，The outfan of RC current rectifying and wave filtering circuit respectively with the outfan of input rectifying filter circuit、First end of the armature winding of high frequency transformer (B1) connects，The secondary windings of high frequency transformer (B1) is connected with the input of output rectifier and filter，The source electrode of described 1st switching tube (Q1) respectively with one end of the 18th resistance (R18)、One end of 14th resistance (R14)、The positive pole of the 4th stabilivolt (DW4) connects，The other end ground connection of described 18th resistance (R18)，The other end of the 14th resistance (R14)、The negative pole of the 4th stabilivolt (DW4) all grids with the 1st switching tube (Q1) are connected，The grid of the 1st switching tube (Q1) is connected with the outfan of pwm control circuit through the 13rd resistance (R13).
Single-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 4, it is characterized in that: described output rectifier and filter includes the 1st diode (D1), 3rd filter capacitor (C3), the positive pole of described 1st diode (D1) is connected with the second end of the secondary windings of the high frequency transformer (B1) of power conversion circuit, the negative pole of described 1st diode (D1) respectively with the positive pole of the 3rd filter capacitor (C3), one end of 5th resistance (R5) connects, the negative pole of described 3rd filter capacitor (C3), the other end of the 5th resistance (R5), first end of the secondary windings of high frequency transformer (B1) is all connected with reference to ground.
Single-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 4, it is characterized in that: described voltage feedback circuit includes photoelectrical coupler (IC1), the 1st stabilivolt (DW1), the first input end of described photoelectrical coupler (IC1) is connected with the outfan of output rectifier and filter through the 7th resistance (R7), second input of described photoelectrical coupler (IC1) and the negative pole of the 1st stabilivolt (DW1) connect, the positive pole of described 1st stabilivolt (DW1) connects with reference to ground, and the outfan of described photoelectrical coupler (IC1) is connected with pwm control circuit.
Single-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 4, it is characterised in that: described switching power circuit is provided with the current-limiting circuit for controlling to export electric current.
nullSingle-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 8，It is characterized in that: described current-limiting circuit includes photoelectrical coupler (IC1)、First a reference source (D12)、30th resistance (R30)，The outfan of described photoelectrical coupler (IC1) is connected with pwm control circuit，The first input end of described photoelectrical coupler (IC1) is connected with the outfan of output rectifier and filter through the 7th resistance (R7)，Second input of described photoelectrical coupler (IC1) and the negative electrode of the first a reference source (D12) connect，The anode of described first a reference source (D12) connects with reference to ground，The reference edge of the first a reference source (D12) respectively with one end of the 28th resistance (R28)、One end of 29th resistance (R29)、One end of 13rd electric capacity (C13) connects，The other end of described 13rd electric capacity (C13) connects with reference to ground，The other end of described 29th resistance (R29) respectively with one end of the 30th resistance (R30)、Second output interface of voltage regulating rectifier device connects，The other end of the 30th resistance (R30) connects with reference to ground，The other end of described 28th resistance (R28) and one end of the 25th resistance (R25)、One end of 26th resistance (R26)、The positive pole of the 12nd electric capacity (C12)、The negative electrode of the second a reference source (D13) connects，The negative pole of the 12nd electric capacity (C12)、The anode of the second a reference source (D13) is all connected with reference to ground，The other end of the 26th resistance (R26) respectively with one end of the 27th resistance (R27)、The reference edge of the second a reference source (D13) connects，The other end of the 27th resistance (R27) connects with reference to ground，The other end of the 25th resistance (R25) is connected with the outfan of output rectifier and filter.
Single-cylinder air-cooled diesel engine voltage regulating rectifier device the most according to claim 4, it is characterized in that: described power circuit includes start-up circuit and PWM power supply circuits, the input of described start-up circuit is connected with the outfan of input rectifying filter circuit, the outfan of described start-up circuit is connected with the power end of pwm control circuit, the input of described PWM power supply circuits is connected with the control power supply winding of the high frequency transformer of power conversion circuit, and the described outfan of PWM power supply circuits is connected with the power end of pwm control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113456.5U CN205754026U (en) | 2015-12-29 | 2015-12-29 | Single-cylinder air-cooled diesel engine voltage regulating rectifier device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521113456.5U CN205754026U (en) | 2015-12-29 | 2015-12-29 | Single-cylinder air-cooled diesel engine voltage regulating rectifier device |
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| CN205754026U true CN205754026U (en) | 2016-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555618A (en) * | 2020-05-28 | 2020-08-18 | 丰县宏祥电子科技有限公司 | Converter special for electric vehicle diesel fan heater |
| CN112748147A (en) * | 2020-12-30 | 2021-05-04 | 中国人民解放军陆军勤务学院 | Automatic diesel oil cold filter plugging point measuring system and method |
-
2015
- 2015-12-29 CN CN201521113456.5U patent/CN205754026U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555618A (en) * | 2020-05-28 | 2020-08-18 | 丰县宏祥电子科技有限公司 | Converter special for electric vehicle diesel fan heater |
| CN112748147A (en) * | 2020-12-30 | 2021-05-04 | 中国人民解放军陆军勤务学院 | Automatic diesel oil cold filter plugging point measuring system and method |
| CN112748147B (en) * | 2020-12-30 | 2023-12-22 | 中国人民解放军陆军勤务学院 | Automatic measuring system and measuring method for cold filter plugging point of diesel oil |
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