CN202309526U

CN202309526U - Inversion type high-voltage power supply

Info

Publication number: CN202309526U
Application number: CN2011204433579U
Authority: CN
Inventors: 高玉琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-10
Filing date: 2011-11-10
Publication date: 2012-07-04
Anticipated expiration: 2021-11-10

Abstract

The utility model relates to an inversion type high-voltage power supply for sparking particles in a particle purifier of a diesel engine car to ignite the particles. The high-voltage power supply comprises a storage battery pack, a low-voltage direct-current voltage stabilizing circuit, a power amplifying circuit, a boosting transformer, a high-voltage output rectifying circuit and a high-voltage signal sampling circuit. The inversion type high-voltage power supply is characterized in that a signal operation circuit and a signal modulation circuit are also arranged between the low-voltage direct-current voltage stabilizing circuit and the power amplifying circuit; after a setting signal from the low-voltage direct-current voltage stabilizing circuit and a feedback signal from the high-voltage signal sampling circuit are operated by the signal operation circuit, an operation result signal is modulated into an alternating-current signal by the signal modulation circuit, and the alternating-current signal is input to the power amplifying circuit; and a protecting circuit is arranged between the power input end of a high-voltage power device and the output end of the storage battery pack. The inversion type high-voltage power supply has the beneficial effects that 1) components are fewer, and the reliability of the device is high; 2) the volume of the device is small; and 3) the manufacturing cost is lower.

Description

A kind of contravariant high voltage source

Technical field

The utility model relates to a kind of contravariant high voltage source, is to be high voltage source with the battery feed inversion specifically, is used for the particle sparking of diesel engine automobile particulate burning purifying device is made the high voltage source of particle ignition.

Background technology

I invent multi a kind of application number be the electrical breakdown formula diesel engine vent gas particulate burning purifying device of " 201120209011.2 ", catch the particle in the tail gas with ceramic for filtration, 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.

The utility model content

For satisfying the above-mentioned the utility model that requires a kind of high voltage source is provided, the technical problem that solve is: convert the low-tension supply of Vehicular accumulator cell to high voltage source and high pressure output is stable, when high-voltage power apparatus breaks down, can protect storage battery.

The technical scheme of the technical problem that solves comprises: batteries 1, low-voltage direct voltage stabilizing circuit 2, power amplification circuit 5, will become step-up transformer 6 and high pressure output rectification circuit 7 thereof, the high-voltage signal sample circuit 8 of high pressure through the power amplification circuit amplifying signal; It is characterized in that: between low-voltage direct voltage stabilizing circuit 2 and power amplification circuit 5, also have signal computing circuit 3 and signal modulation circuit 4, described signal computing circuit 3 have the output 21 that connects the low-voltage direct voltage stabilizing circuit setting signal input 31, connect feedback signal input 32 and the output 33 that the operation result of setting signal and feedback signal is exported of the output 81 of high-voltage signal sample circuit 8; The output 33 of signal computing circuit 3 connects two

road inputs

41,42 of signal modulation circuit 4, and two

road outputs

43,44 of signal modulation circuit 4 are connected with the

input

51,52 of power amplification circuit 5 respectively; Also be connected to relay coil J between the output 81 of high-voltage signal sample circuit 8 and the ground, relay contact is serially connected between the output of power input and batteries 1 of high-voltage power apparatus.

Setting signal has the high pressure of the whole output of adjustable amplitude value of its operation result signal after stable amplitude and the computing of high pressure feedback signal in this technical scheme; Make it reach the magnitude of voltage of setting signal requirement; The modulated circuit of operation result signal is modulated into the square-wave signal of fixed frequency, and this square-wave signal amplifies and the step-up transformer coupling becomes the direct current of storage battery into High Level AC Voltage and amplitude stability through power amplification circuit.When described high voltage source broke down not interchange output, high-voltage signal sample circuit voltage was zero, and relay coil J dead electricity discharges, and relay contact cuts off the power supply of batteries 1 to high-voltage power apparatus, avoids the loss of storage battery electric energy.

Described signal computing circuit 3 is made up of resistance R 1-R5, potentiometer RW1, RW2, triode T1; One end of resistance R 2 is the output 21 that setting signal input 31 connects the low-voltage direct voltage stabilizing circuit; Its other end is connected with an end of resistance R 1 through potentiometer RW1; One end of resistance R 3 is the output 81 that feedback signal input 32 connects high-voltage signal sample circuit 8, and its other end is connected with an end of resistance R 1 through potentiometer RW2; The other end ground connection of resistance R 1; The base stage of triode T1 is connected with an end of resistance R 1 through resistance R 4, and its emitter is that operation result output 33 passes through resistance R 5 ground connection, and its collector electrode connects the output 21 of low-voltage direct voltage stabilizing circuit 2.

Described signal modulation circuit 4 is made up of resistance R 6-R11, capacitor C 1, C2, triode T2, T3 and IC 1; Cross-over connection resistance R 6 between 2 pin of

IC

1,3 pin, its 6 pin are through capacitor C 1 ground connection, and its 2 pin, 6 pin link to each other; 7 pin of IC 1 are connected with its 8 pin, 4 pin through resistance R 7, and its 8 pin, 4 pin connect the output 21 of low-voltage direct voltage stabilizing circuit; 1 pin ground connection of

IC

1,5 pin are through capacitor C 2 ground connection; The base stage of triode T2 is connected with 3 pin of IC 1 through resistance R 8, and the collector electrode of triode T2 is connected the grounded emitter of triode T2 through resistance R 10 with the emitter pin of triode T1; The base stage of triode T3 is connected with 7 pin of IC 1 through resistance R 9, and the collector electrode of triode T3 is connected the grounded emitter of triode T3 through resistance R 11 with the emitter pin of triode T1.

The working power of described signal computing circuit and signal modulation circuit is that the electronic component of single supply and forming circuit is less, thereby makes the fault point reduce the reliability that improves high-voltage power apparatus.The used lower and negligible amounts of components and parts price, manufacturing cost is lower.

The secondary coil L2 of the input of rectifier QL2 and step-up transformer is connected in parallel in the described high-voltage signal sample circuit 8, output and the filter capacitor C4 of rectifier QL2 be connected in parallel; The plus earth of the output of rectifier QL2, its negative pole are the end that output 81 connects the resistance R 3 in the signal computing circuit 3.

The output of rectifier QL2 is parallel with relay coil J in the described high-voltage signal sample circuit 8, and the anode of the termination storage battery U1 of relay normally open contact J-1, its other end connect the primary coil L centre cap of step-up transformer through normally closed button QT; Relay normally open contact J-2 is serially connected between the anode and inductance L 3 of storage battery U2.

The beneficial effect of the utility model is: 1, realizing boosting, using less components and parts on the basis of the function of voltage stabilizing, thereby making the fault point reduce the reliability that improves high-voltage power apparatus.2, the less volume of device that makes of components and parts is less.Can break off storage battery when 3, device breaks down, avoid the electric energy loss and influence automobilism.4, the used lower and negligible amounts of components and parts price, manufacturing cost is lower.

Description of drawings

Fig. 1 is the utility model block diagram.

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

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, protective circuit 9.

Described batteries 1 is a Vehicular accumulator cell, comprises storage battery U1, U2, and its voltage is 12V.

Described low-voltage direct voltage stabilizing circuit 2 provides the steady operation power supply for signal computing circuit 3, signal modulation circuit 4, and it is made up of inductance L 3, capacitor C 5-C7, integrated regulator IC2 (model is 7809); One end of inductance L 3 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 voltages of integrated regulator IC2 are+9V; The other end of inductance L 3 is connected with the positive pole of storage battery U2 through relay normally open contact J-2.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 1-R5, potentiometer RW1, RW2, triode T1; One end of resistance R 2 (setting signal input 31) connects 3 pin (output 21) of integrated regulator IC2 in the low-voltage direct voltage stabilizing circuit; Its other end is connected with an end of resistance R 1 through potentiometer RW1; One end of resistance R 3 (feedback signal input) connects the negative pole (output 81) of the output of rectifier QL2 in the high-voltage signal sample circuit 8, and its other end is connected with an end of resistance R 1 through potentiometer RW2; The other end ground connection of resistance R 1; Voltage on the resistance R 1 is the operation result signal voltage; The base stage of triode T1 is connected with an end of resistance R 1 through resistance R 4, and its emitter (operation result output 33) is through resistance R 5 ground connection, and its collector electrode connects the output 21 of low-voltage direct voltage stabilizing circuit 2.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, and the high-voltage power apparatus volume is increased; Self-excitation phenomena the time may take place in work and need compensate in operational amplifier in addition.

Described signal modulation circuit 4 is made up of resistance R 6-R11, capacitor C 1, C2, triode T2, T3 and IC 1, and the model of IC 1 is a time-base circuit 555; Cross-over connection resistance R 6 between 2 pin of

IC

1,5 pin are through capacitor C 2 ground connection; Its frequency of square wave of 3 pin of IC 1,7 pin output symmetry is 40KHZ, selects resistance R 6 and the resistance value of capacitor C 1 and the frequency that capacitance can be confirmed described square wave; The base stage of triode T2 is connected with 3 pin of IC 1 through resistance R 8, and the collector electrode of triode T2 is connected the grounded emitter of triode T2 through resistance R 10 with the emitter pin of triode T1; The base stage of triode T3 is connected with 7 pin of IC 1 through resistance R 9, and the collector electrode of triode T3 is connected the grounded emitter of triode T3 through resistance R 11 with the emitter pin of triode T1; Described square wave makes triode T2, T3 alternate conduction, ends.

Described power amplification circuit is made up of the primary coil L of triode T4-T7, step-up transformer B1; Triode T4, T5 constitute a multiple tube to improve multiplication factor, and the base stage of triode T4 connects the collector electrode of triode T2, and the collector electrode of triode T4, T5 connects the end of transformer L, the grounded emitter of triode T5; Triode T6, T7 constitute another multiple tube, and the base stage of triode T6 connects the collector electrode of triode T3, and the collector electrode of triode T6, T7 connects the other end of transformer L, the grounded emitter of triode T7; The centre cap of transformer L (power input 53) is connected with the positive pole (output 12) of storage battery U1 through protective circuit; Storage battery U1, U2 are connected in series, and the voltage of storage battery U1 positive terminal is 24V; Triode T5, T7 are the pliotron of collector current 25A.

Described step-up transformer B1 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 voltage 24V of elementary coil L; Secondary coil L2 is to exchange about 8V 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 and capacitor C 3, and the input of rectifier QL1 is connected its output shunt capacitance C3 with secondary coil L1, and the direct voltage of its output is about 7.2KV.

The secondary coil L2 of the input of rectifier QL2 and step-up transformer is connected in parallel in the described high-voltage signal sample circuit 8, output and the filter capacitor C4 of rectifier QL2 be connected in parallel; The plus earth of the output of rectifier QL2, its negative pole (output 81) connect an end (feedback signal input 31) of the resistance R 3 in the signal computing circuit 3.

Protective circuit 9 is such structure: promptly the output at the rectifier QL2 of high-voltage signal sample circuit 8 is parallel with relay coil J; The anode (output 12) of the termination storage battery U1 of relay normally open contact J-1, its other end connect the primary coil L centre cap (power input 53) of step-up transformer through normally closed button QT; The two ends of relay normally open contact J-1 are parallel with and often open button AT, and another normally open contact of relay J-2 is serially connected between the anode and inductance L 3 (power input 22) of storage battery U2.

The operation principle of the utility model is:

Low-voltage direct voltage stabilizing circuit 2 provides the steady operation power supply for signal computing circuit 3, signal modulation circuit 4.

Setting signal low-voltage direct voltage stabilizing circuit 2 is a fixed value in signal computing circuit 3; Feedback signal is from high-voltage signal sample circuit 8, and when feedback signal diminished, voltage increased on the resistance R 1; When feedback signal becomes big; Voltage reduces on the resistance R 1, and regulator potentiometer RW1, RW2 can make resistance R 1 power on and be pressed with an OK range, and resistance R 4, R5, triode T1 constitute the voltage on the emitter follower output resistance R1.

Triode T1 emitter in signal modulation circuit 4 in the termination signal computing circuit 3 of resistance R 10, R11 is accepted the computing signal; Triode T4 when triode T2 or T3 conducting in the power amplification circuit 5 and T5 or triode T6 and T7 end; When triode T2 or T3 by the time triode T4 and T5 or triode T6 and T7 conducting in the power amplification circuit 5; During triode conducting in the power amplification circuit 5 described computing signal is amplified by certain multiplication factor, on the primary coil L of step-up transformer B1, form alternating voltage and make its secondary coil L1 induce High AC voltage.

The proportional relation of induced voltage of the induced voltage of the secondary coil L2 of step-up transformer and secondary coil L1 in high-voltage signal sample circuit 8; The alternating voltage of secondary coil L2 feeds back to signal computing circuit 3 through rectifier QL2 rectification, makes the voltage of secondary coil L2 stable through computing, amplification.

Described protective circuit 9 repeat circuit coil J are connected in parallel on the output of the rectifier QL2 of high-voltage signal sample circuit 8; When the high tension voltage device breaks down such as the triode damage can cause rectifier QL2 no-output; Relay coil J dead electricity, relay normally open contact J-1, J-2 break off; The power supply of cutoff high supply unit makes the unlikely loss of storage battery electric energy.Also the contact of relay capable of using sends alarm signal in addition.

Press during high voltage source work and often open button AT; Press normally closed button QT when quitting work.

Claims

1. contravariant high voltage source; This high-voltage power apparatus comprises: batteries (1), low-voltage direct voltage stabilizing circuit (2), power amplification circuit (5), will become step-up transformer (6) and high pressure output rectification circuit (7) thereof, the high-voltage signal sample circuit (8) of high pressure through the power amplification circuit amplifying signal; It is characterized in that: between low-voltage direct voltage stabilizing circuit (2) and power amplification circuit (5), also have signal computing circuit (3) and signal modulation circuit (4), described signal computing circuit (3) have the output (21) that connects the low-voltage direct voltage stabilizing circuit setting signal input (31), connect feedback signal input (32) and the output (33) that the operation result of setting signal and feedback signal is exported of the output (81) of high-voltage signal sample circuit (8); The output (33) of signal computing circuit (3) connects two road inputs (41,42) of signal modulation circuit (4), and two road outputs of signal modulation circuit (4) (43,44) are connected with the input (51,52) of power amplification circuit (5) respectively; Also be connected to relay coil J between the output (81) of high-voltage signal sample circuit (8) and the ground, relay contact is serially connected between the output of power input and batteries (1) of high-voltage power apparatus.

2. a kind of contravariant high voltage source as claimed in claim 1 is characterized in that: described signal computing circuit (3) is made up of resistance R 1-R5, potentiometer RW1, RW2, triode T1; The output (21) of one termination low-voltage direct voltage stabilizing circuit of resistance R 2; Its other end is connected with an end of resistance R 1 through potentiometer RW1; The output (81) of one termination high-voltage signal sample circuit (8) of resistance R 3, its other end is connected with an end of resistance R 1 through potentiometer RW2; The other end ground connection of resistance R 1; The base stage of triode T1 is connected with an end of resistance R 1 through resistance R 4, and its emitter is through resistance R 5 ground connection, and its collector electrode connects the output (21) of low-voltage direct voltage stabilizing circuit (2).

3. a kind of contravariant high voltage source as claimed in claim 1 is characterized in that: described signal modulation circuit (4) is made up of resistance R 6-R11, capacitor C 1, C2, triode T2, T3 and IC 1; Cross-over connection resistance R 6 between 2 pin of IC 1,3 pin, its 6 pin are through capacitor C 1 ground connection, and its 2 pin, 6 pin link to each other; 7 pin of IC 1 are connected with its 8 pin, 4 pin through resistance R 7, and its 8 pin, 4 pin connect the output 21 of low-voltage direct voltage stabilizing circuit; 1 pin ground connection of IC 1,5 pin are through capacitor C 2 ground connection; The base stage of triode T2 is connected with 3 pin of IC 1 through resistance R 8, and the collector electrode of triode T2 is connected the grounded emitter of triode T2 through resistance R 10 with the emitter pin of triode T1; The base stage of triode T3 is connected with 7 pin of IC 1 through resistance R 9, and the collector electrode of triode T3 is connected the grounded emitter of triode T3 through resistance R 11 with the emitter pin of triode T1.

4. a kind of contravariant high voltage source as claimed in claim 1; It is characterized in that: the secondary coil L2 of the input of rectifier QL2 and step-up transformer is connected in parallel in the described high-voltage signal sample circuit (8), output and the filter capacitor C4 of rectifier QL2 be connected in parallel; The plus earth of the output of rectifier QL2, its negative pole connect an end of the resistance R 3 in the signal computing circuit (3).

5. a kind of contravariant high voltage source as claimed in claim 1; It is characterized in that: the output of rectifier QL2 is parallel with relay coil J in the described high-voltage signal sample circuit (8), and the anode of the termination storage battery U1 of relay normally open contact J-1, its other end connect the primary coil L centre cap of step-up transformer through normally closed button QT; Relay normally open contact J-2 is serially connected between the anode and inductance L 3 of storage battery U2.