CN202550883U

CN202550883U - High-voltage power supply used for diesel engine particle purifier

Info

Publication number: CN202550883U
Application number: CN2011204433333U
Authority: CN
Inventors: 高玉琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-10
Filing date: 2011-11-10
Publication date: 2012-11-21
Anticipated expiration: 2021-11-10

Abstract

Provided is a high-voltage power supply used for a diesel engine particle purifier. The high-voltage power supply is used for striking sparks of particles in a diesel engine automobile particle purifier to ignite the particles. Voltage of a storage battery is converted by the high-voltage power supply into high voltage through inversion. The high-voltage power supply comprises a power amplification circuit set, a direct current voltage stabilizing circuit, a signal operation circuit, a signal modulation circuit, a power amplification circuit, a step-up transformer, a high-voltage output rectification circuit of the step-up transformer, a high-voltage signal sampling circuit, and a current sampling circuit. The high-voltage power supply is characterized by also comprising a single-chip microcomputer; two pins of the single-chip microcomputer are respectively connected with input terminals of the signal modulation circuit; one pin of the single-chip microcomputer is connected with an output terminal of the current sampling circuit; and square wave with opposite phase can be output by the two pins that are connected with the input terminals of the signal modulation circuit. During a time period of accumulation of the particles, the square wave can be output by the single-chip microcomputer in an interrupted manner to make inversion occur interruptedly, so that electric energy absorbed from the storage battery set by the high-voltage power supply is substantially reduced.

Description

A kind of diesel engine particles clarifier is used high voltage source

Technical field

The utility model relates to a kind of diesel engine particles clarifier and uses high voltage source, is the high voltage source that is used for the particle sparking of diesel engine automobile particulate burning purifying device is made the particle ignition specifically.

Background technology

My utility model a kind of application number be the electrical breakdown formula diesel engine vent gas particulate burning purifying device of " 201120209011.2 ", with the particle in the ceramic for filtration seizure tail gas, regenerate when a certain amount of when the particle in the pottery reaches; The operation principle of regeneration is: the anode of high-voltage DC power supply, negative terminal are taken over the electrode in the filter pottery respectively, constitute an electrostatic field between the electrode, and electrostatic field voltage is 5KV to 8KV; The particle that ceramic for filtration filters is a conductive materials; When ceramic internal granular layer is thin, can not produce puncture, when ceramic endoparticle runs up to when a certain amount of; Puncture voltage reduces and produces electric spark, and electric spark makes the long-pending heat of particle, ignition.Requirement is that battery feed converts high voltage source and output voltage stabilization to the vehicle power of diesel engine automobile; High voltage source on the market generally is used for electrostatic precipitation; Its volume is bigger; On diesel engine automobile, use and receive spatial constraints, its working power is not suitable on automobile, working from civil power.

Summary of the invention

Provide a kind of diesel engine particles clarifier to use high voltage source for satisfying the above-mentioned the utility model that requires, the technical problem that solve is: the electric energy that consumes when the power source conversion of Vehicular accumulator cell is become stable high voltage source and work is few.

This high voltage source comprises: batteries 1, direct current regulation circuit 2, signal computing circuit 3, signal modulation circuit 4, power amplification circuit 5, step-up transformer 6 and high pressure output rectification circuit 7 thereof, high-voltage signal sample circuit 8, current sampling circuit 9;

The output U2 of described batteries 1 receives the input of direct current regulation circuit 2, and the circuit of output 21 in high-voltage power apparatus of direct current regulation circuit 2 provides working power;

Described signal computing circuit 3 has feedback signal input 32 and setting signal and the operation result signal output part 33 that feedback signal subtracts computing of setting signal input 31, the feedback signal of setting signal; Setting signal input 31 connects the output 21 of direct current regulation circuit 2, and feedback signal input 32 connects the output 81 of high-voltage signal sample circuit 8;

Described signal modulation circuit 4 have two road operation result signals input 41,42, be used for the modulation operation consequential signal two road square-

wave signals input

45,46 and through the modulation after

AC signal output

43,44, described input 41,42 connects the output 33 of signal computing circuit 3;

Described power amplification circuit 5 has

input

51,52 and

output

53,54;

Input

51,52 is connected with the

output

43,44 of signal modulation circuit 4 respectively;

Output

53,54 is connected to the two ends of the primary coil L of step-up transformer 6 respectively, and the centre cap Le of the primary coil L of described step-up transformer 6 receives another output U1 of batteries;

The input of described high-voltage signal sample circuit 8 is connected with the secondary coil L2 of step-up transformer 6;

The input of described current sampling circuit 9 is serially connected in the current circuit of high pressure output rectification circuit 7;

It is characterized in that: described high voltage source also comprises a single-chip microcomputer IC1; The pin P1.6 of the I/O mouth of single-chip microcomputer IC1, P1.7 are connected with the

input

45,46 of described signal modulation circuit 4 respectively; Pin P1.5 is connected with the output 92 of current sampling circuit 9, pin P1.6, the reciprocal square wave of the exportable phase place of P1.7.

The amplitude that setting signal has its operation result signal after stable amplitude and the computing of high pressure feedback signal in above-mentioned technical scheme can make the high tension voltage value stabilization of output after amplifying; The square-wave signal of modulation operation consequential signal is from the output of single-chip microcomputer in signal modulation circuit; The operation result signal is modulated into AC signal; This AC signal amplifies and the step-up transformer coupling becomes the direct current of storage battery into High Level AC Voltage through power amplification circuit, uses when supplying the regeneration of diesel engine particles clarifier; Particle needs a period of time accumulation just to reach regenerating point in the diesel engine particles clarifier, and in the time period of particle accumulation, single-chip microcomputer can be exported square wave discontinuously, and inversion takes place discontinuously, reduces greatly thereby make high-voltage power apparatus draw electric energy to storage battery.

For the storage battery in the input power batteries 1 that improves described high voltage source for being connected in series, the voltage of its output U1 is the voltage sum of each storage battery.

Description of drawings

Fig. 1 is the utility model block diagram.

Fig. 2 is the circuit theory diagrams of the utility model preferred embodiment.

Fig. 3 is the program flow diagram of single-chip microcomputer.

Fig. 4 is the subprogram of square wave output among Fig. 3.

The low-voltage direct voltage stabilizing circuit figure of Fig. 5 the utility model.

Embodiment

Contrast the preferred embodiment of description of drawings the utility model at present.

This high-voltage power apparatus comprises: batteries 1, low-voltage direct voltage stabilizing circuit 2, signal computing circuit 3, signal modulation circuit 4, power amplification circuit 5, step-up transformer 6, high pressure output rectification circuit 7, high-voltage signal sample circuit 8, current sampling circuit 9, single-chip microcomputer IC1.

Described batteries 1 is a Vehicular accumulator cell, batteries by a plurality of storage batterys be composed in series one of which output U1 voltage 24V, another output U2 voltage is 12V.

The circuit of described low-voltage direct voltage stabilizing circuit 2 in described high-voltage power apparatus provides the steady operation power supply, and it is made up of inductance L G, capacitor C 5-C7, integrated regulator IC2 (model is 7805); The end of inductance L G is connected with the positive pole of storage battery U2 through K switch 2; The other end of inductance L G is connected with 1 pin of integrated regulator IC2, this tie point passes through capacitor C 5 ground connection; The 2 pin ground connection of integrated regulator IC2; Be parallel with filter capacitor C6, C7 between 3 pin of integrated regulator IC2 and the ground, the 3 pin output+5V power supplys of integrated regulator IC2; Batteries generally is connected with generator, and the voltage ripple during generating on the batteries is bigger, selects for use inductance can effectively suppress ripple.

Described signal computing circuit 3 is made up of resistance R 2-R5, potentiometer RW1, triode T1; One end of resistance R 2 (setting signal input 31) connects+5V power supply (output 21); Its other end is connected with an end of resistance R 3 through potentiometer RW1; The other end of resistance R 3 (feedback signal input 32) connects the negative pole (output 81) of the output of rectifier QL2 in the high-voltage signal sample circuit 8; The cursor slide end of potentiometer RW1 is connected with the base stage of triode T1 through resistance R 4; The emitter of triode T1 (operation result output 33) is through resistance R 5 ground connection, and its collector electrode connects+the 5V power supply.Setting signal and feedback signal subtract computing in signal computing circuit 3, and its operation result amplifies through output can make high tension voltage output keep stable; Regulator potentiometer RW1 can change the high pressure output voltage values; The also available operational amplifier of signal operation realizes, but uses operational amplifier to need positive and negative stabilized voltage power supply, and this stabilized voltage power supply need isolate with storage battery, increases the manufacturing cost of high-voltage power apparatus like this.

Described signal modulation circuit 4 is made up of resistance R 8-R11, triode T2, T3, capacitor C 8, C9, diode D2, D3; The base stage of triode T2 is connected with the pin P1.6 of single-chip microcomputer IC1 through resistance R 8 (square-wave signal input 45); The collector electrode of triode T2 is connected with the emitter pin of triode T1 through resistance R 10 (operation result signal input part 41); The other end (AC signal output 43) of the collector electrode of one termination triode T2 of capacitor C 8, capacitor C 8 is through diode D2 ground connection, the grounded emitter of triode T2; The base stage of triode T3 is connected with the pin P1.7 of single-chip microcomputer IC1 through resistance R 9 (square-wave signal input 46); The collector electrode of triode T3 is connected with the emitter pin of triode T1 through resistance R 11 (operation result signal input part 42); The other end (AC signal output 44) of the collector electrode of one termination triode T3 of capacitor C 9, capacitor C 9 is through diode D3 ground connection, the grounded emitter of triode T3; The program that is equipped with in the single-chip microcomputer IC1 goes up pin P1.7, pin P1.6 and produces the opposite square wave of phase place, and square wave frequency is 40KHZ; This square wave can make triode T2, T3 alternate conduction, end, and the operation result signal is carried out copped wave, makes the operation result signal become AC signal by direct current signal, through capacitor C 8, C9 output.

Described power amplification circuit is made up of the primary coil L of triode T4-T7, step-up transformer 6, and the AC signal of signal modulation circuit 4 outputs is recommended amplification; Triode T4, T5 constitute a multiple tube to improve multiplication factor; The base stage of triode T4 (input 51) connects the output 43 of capacitor C 8; The collector electrode of triode T4, T5 (output 53) connects the end of transformer L, the grounded emitter of triode T5; Triode T6, T7 constitute another multiple tube; The base stage of triode T6 (input 52) connects the output 44 of capacitor C 9; The collector electrode of triode T6, T7 (output 54) connects the other end of transformer L; The grounded emitter of triode T7, the centre cap Le of transformer L is connected with the output U1 of batteries through K switch 1.

Described step-up transformer 6 has centre tapped primary coil L, secondary coil L1, L2; Secondary coil L1 is a step-up coil; The output voltage of secondary coil L1 is for exchanging about 6KV when the centre tapped direct voltage 24V of elementary coil L; Secondary coil L2 is to exchange about 4V for its output voltage of sampling coil, and described coil is enclosed within on the high frequency magnetic core, adopts high frequency magnetic core that volume of transformer is reduced.

Described high pressure output rectification circuit 7 is made up of rectifier QL1, capacitor C 3, and the input of rectifier QL1 is connected with secondary coil L1, the direct voltage of the output shunt capacitance C3 of rectifier QL1, its output is about 7.2KV.

Described current sampling circuit 9 is made up of pulse transformer B2, resistance R 12, R13, triode T8, diode D1; Negative pole, another termination load of capacitor C 3 in the elementary termination high pressure output rectification circuit 7 of pulse transformer B2; B ' the end ground connection of B2 level of pulse transformer, b end meet triode T8 through resistance R 12 base stage; The collector electrode of triode T8 connects+the 5V power supply through resistance R 13; Be connected to diode D1 between the base stage of triode T8, the emitter, the collector electrode of triode T8 (output 92) meets the pin P1.5 of single-chip microcomputer IC1; The function of current sampling circuit 9 is: when electric spark produces, in the output loop of high-voltage power apparatus, can produce pulse current, the secondary meeting of pulse transformer B2 induces voltage, amplifies to single-chip microcomputer IC1 through triode T8 and carries spark signal.

Described high-voltage signal sample circuit 8 comprises: rectifier QL2, filter capacitor C4, optocoupler GR1, resistance R 6, R7; The input of rectifier QL2 is connected with a, a ' end of the secondary coil L2 of step-up transformer, output and the filter capacitor C4 of rectifier QL2 are connected in parallel; The plus earth of the output of rectifier QL2, its negative pole (output 81) connect an end (feedback signal input 32) of the resistance R 3 in the signal computing circuit 3; Input 2 pin of optocoupler GR1 connect the negative pole of filter capacitor C4, input 1 pin of optocoupler GR1 is connected with the positive pole of filter capacitor C4 through resistance R 6; Output 3 pin ground connection, optocoupler GR1 output 4 pin of optocoupler GR1 connect+the 5V power supply through resistance R 7, and optocoupler GR1 output 4 pin (output 82) meet the pin P1.4 of single-chip microcomputer IC1; The secondary coil L2 of step-up transformer should have induced voltage when high-voltage power apparatus is in proper working order; It is low level through its output 4 pin that the input of optocoupler GR1 has electric current; The non-inductive voltage of secondary coil L2 of step-up transformer when high-voltage power apparatus breaks down; Optocoupler GR1 output 4 pin are high level, can judge in view of the above whether high-voltage power apparatus work is normal.

Described its model of single-chip microcomputer IC1 is AT89C2051; Because the structure of single-chip microcomputer and operation principle have been the pin of the general electronic technology personnel institute's understanding so the part I/O mouth that in Fig. 2, only draws, the oscillating circuit and the reset circuit of the work of support single-chip microcomputer do not draw.The pin P1.7 of described single-chip microcomputer, P1.6 are as the square wave output; Last its phase place of square wave of pin P1.7, P1.6 is opposite each other; Pin P1.7 connects the base stage of triode T3, pin P1.6 meets triode T2 through resistance R 8 base stage through resistance R 9; Pin P1.5 connects the collector electrode of triode T8 as spark signal input, pin P1.5; Pin P1.4 connects 4 pin of optocoupler GR1 as high voltage source working signal input, pin P1.4; Pin P1.3 connects+the 5V power supply through resistance R 14 as high voltage source operate as normal index signal output, the negative pole of pin P1.3 sending and receiving optical diode LED1, the positive pole of LED 1, and pin P1.2 connects+the 5V power supply through resistance R 15 as high voltage source failure alarm signal output, the negative pole of pin P1.2 sending and receiving optical diode LED2, the positive pole of LED 2.

Existing map 3, Fig. 4 explain the execution in step of program in the single-chip microcomputer:

A, make that pin P1.3 is that 0 (low level), pin P1.2 are 1 (high level), make that the relay indicating light LED is 1 bright, fault alarm indicator light LED 2 goes out;

B, call the square wave output subroutine, continue 30 seconds at pin P1.7, the reciprocal square wave of the last generation of P1.6 phase place;

C, the spark signal on detection pin P1.5 between the positive half period of square wave output; Then forward H step output square wave 10 minutes to if any spark signal; Make high voltage source have high tension voltage output to continue sparking and make the long-pending heat of particle, ignition in the clarifier, forward the C step then to; As do not have spark signal and then change the D step;

D, high voltage source working signal such as the E step that then forwards in proper working order on detection pin P1.4 between the negative half-cycle of square wave output; As break down and then forward the G step to and make that pin P1.7, P1.6 are 0; Stop square wave output; Pin P1.3 is 1, pin P1.2 is 0, makes that relay indicating light LED 1 goes out, fault alarm indicator light LED 2 is bright, and program is carried out and finished;

If reaching 60 seconds, the output of E square wave changes the F step, as then not forwarding the C step to by 60 seconds;

F, when square wave output reaches 60 seconds, making pin P1.7, P1.6 is 0, stops square wave output 4 minutes to reduce the consumption of electric energy, forwards the B step then to.

The step of square wave output subroutine is:

B1, make that pin P1.7 is 1, pin P1.6 is 0;

B2, time-delay half period time;

B3, make that pin P1.7 is 0, pin P1.6 is 1;

B4, time-delay half period time;

B5, return.

The particle that is filtered in the diesel engine particles clarifier will just reach regenerating point through accumulation after a while; In at this moment; High-voltage power apparatus does not need to export high pressure always; Can take to be interrupted the consumption that the method for exporting high pressure reduces electric energy, when the diesel engine particles clarifier reaches regenerating point, make high pressure continue output again and make the long-pending heat of particle, ignition to produce electric spark., high-voltage power apparatus need provide an alarm signal when breaking down, so that take measures.

The program that is provided with in the single-chip microcomputer IC1 can make pin P1.7, the last generation of P1.6 square wave and continue a period of time, makes triode T2, T3 alternate conduction, ends, and the output of high-voltage power apparatus continues a period of time; Make pin P1.7, P1.6 be in low level a period of time then, this section in the period triode T2, T3 end, high-voltage power apparatus is output not, to reduce power consumption; Have between period of output at high-voltage power apparatus, visit pin P1.5 has judged whether that electric spark produces, and if any keeping high pressure output 10 minutes, can make long-pending hot, the ignition of particle in the diesel engine particles clarifier in the section between at this moment; As do not continue to carry out to be interrupted the program of exporting high tension voltage.

The output of optocoupler GR1 in the described high-voltage signal sample circuit 8 meets the pin P1.4 of single-chip microcomputer IC1, and output 4 pin of optocoupler GR1 are high level when the high-voltage power apparatus no-output, and output 4 pin of optocoupler GR1 were low level when high-voltage power apparatus had output; Program in the single-chip microcomputer IC1 have high tension voltage output during the pin P1.4 of visit single-chip microcomputer IC1; When pin P1.4 goes up level when low; The pin P1.3 that makes single-chip microcomputer IC1 is that low level makes that LED is 1 bright, pin P1.2 is that high level goes out LED 2, and the operation of expression high-voltage power apparatus is normal; When pin P1.4 goes up level is that high seasonal LED 1 goes out, LED 2 is bright, and the operation of expression high-voltage power apparatus is broken down, and can not regenerate to the diesel engine particles clarifier.

Claims

1. a diesel engine particles clarifier is used high voltage source, comprises batteries (1), direct current regulation circuit (2), signal computing circuit (3), signal modulation circuit (4), power amplification circuit (5), step-up transformer (6) and high pressure output rectification circuit (7) thereof, high-voltage signal sample circuit (8), current sampling circuit (9);

One output U2 of described batteries (1) receives the input of direct current regulation circuit (2), and the circuit of output (21) in high-voltage power apparatus of direct current regulation circuit (2) provides working power;

Described signal computing circuit (3) has feedback signal input (32) and setting signal and the operation result signal output part (33) that feedback signal subtracts computing of setting signal input (31), the feedback signal of setting signal; Setting signal input (31) connects the output (21) of direct current regulation circuit (2), and feedback signal input (32) connects the output (81) of high-voltage signal sample circuit (8);

Described signal modulation circuit (4) has the input (41,42) of two road operation result signals, the input (45,46) that is used for two road square-wave signals of modulation operation consequential signal and the AC signal output (43,44) after modulation, and described input (41,42) connects the output (33) of signal computing circuit (3);

Described power amplification circuit (5) has input (51,52) and output (53,54); Input (51,52) is connected with the output (43,44) of signal modulation circuit (4) respectively; Output (53,54) is connected to the two ends of the primary coil L of step-up transformer (6) respectively, and the centre cap Le of the primary coil L of described step-up transformer (6) receives another output U1 of batteries;

The input of described high-voltage signal sample circuit (8) is connected with the secondary coil L2 of step-up transformer (6);

The input of described current sampling circuit (9) is serially connected in the current circuit of high pressure output rectification circuit (7);

It is characterized in that: described high voltage source also comprises a single-chip microcomputer IC1; The pin P1.6 of the I/O mouth of single-chip microcomputer IC1, P1.7 are connected with the input (45,46) of described signal modulation circuit (4) respectively; Pin P1.5 is connected with the output (92) of current sampling circuit (9), pin P1.6, the reciprocal square wave of the exportable phase place of P1.7.

2. a kind of diesel engine particles clarifier as claimed in claim 1 is used high voltage source; It is characterized in that: the pin P1.4 of the I/O mouth of single-chip microcomputer IC1 connects another output (82) of described high-voltage signal sample circuit (8); The negative pole of pin P1.3 sending and receiving optical diode LED1, the positive pole of LED 1 connect+the 5V power supply through resistance R 14, and the negative pole of pin P1.2 sending and receiving optical diode LED2, the positive pole of LED 2 connect+the 5V power supply through resistance R 15.

3. a kind of diesel engine particles clarifier as claimed in claim 1 is used high voltage source, it is characterized in that: the storage battery in the described batteries (1) is for being connected in series, and the voltage of its another output U1 is the voltage sum of each storage battery.

4. a kind of diesel engine particles clarifier as claimed in claim 1 is used high voltage source, it is characterized in that: described signal computing circuit (3) is made up of resistance R 2-R5, potentiometer RW1, triode T1; One termination of resistance R 2+5V power supply; Its other end is connected with an end of resistance R 3 through potentiometer RW1; The negative pole of the output of rectifier QL2 in another termination high-voltage signal sample circuit (8) of resistance R 3; The cursor slide end of potentiometer RW1 is connected with the base stage of triode T1 through resistance R 4; The emitter of triode T1 is through resistance R 5 ground connection, and its collector electrode connects+the 5V power supply.

5. a kind of diesel engine particles clarifier as claimed in claim 1 is used high voltage source; It is characterized in that: described signal modulation circuit (4) is made up of resistance R 8-R11, triode T2, T3, capacitor C 8, C9, diode D2, D3; The base stage of triode T2 is connected with the pin P1.6 of single-chip microcomputer IC1 through resistance R 8; The collector electrode of triode T2 is connected with the emitter pin of triode T1 through resistance R 10; The collector electrode of one termination triode T2 of capacitor C 8, the other end of capacitor C 8 are through diode D2 ground connection, the grounded emitter of triode T2; The base stage of triode T3 is connected with the pin P1.7 of single-chip microcomputer IC1 through resistance R 9; The collector electrode of triode T3 is connected with the emitter pin of triode T1 through resistance R 11; The collector electrode of one termination triode T3 of capacitor C 9, the other end of capacitor C 9 are through diode D3 ground connection, the grounded emitter of triode T3.