CN113708657A - Electric spark voltage-stabilizing power supply - Google Patents
Electric spark voltage-stabilizing power supply Download PDFInfo
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- CN113708657A CN113708657A CN202111020796.3A CN202111020796A CN113708657A CN 113708657 A CN113708657 A CN 113708657A CN 202111020796 A CN202111020796 A CN 202111020796A CN 113708657 A CN113708657 A CN 113708657A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M11/00—Power conversion systems not covered by the preceding groups
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses an electric spark voltage-stabilizing power supply, which relates to the technical field of voltage-stabilizing control and comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM (pulse width modulation) driving module, a pulse chopping module and a communication module; the power supply feedback switching control module is used for providing a power supply, the power switch control module is used for generating pulse current, the signal sampling conditioning module is used for sampling and processing voltage and current signals, the main control module is used for receiving signals, outputting control signals and driving signals, the PWM driving module is used for outputting pulses, the pulse chopping module absorbs surges, and the communication module is used for communication. The electric spark voltage-stabilizing power supply effectively inhibits pulse surge, does not need a high-voltage breakdown loop, realizes the automatic switching of electric spark power supply on-off and power supply feedback points, and improves the detection precision of voltage and current by adopting the operational amplifier circuit and the voltage and current detection circuit, thereby improving the voltage-stabilizing output precision.
Description
Technical Field
The invention relates to the technical field of voltage stabilization control, in particular to an electric spark voltage stabilization power supply.
Background
The electric discharge machining is a non-contact special machining technique which is widely used because of the ability to machine difficult-to-cut materials and parts with complex shapes, the most important part is a pulse power supply, the quality of the pulse power supply directly influences various technological indexes of electric spark forming processing, such as processing quality precision, processing speed and the like, in a conventional electric discharge machining power supply, electric discharge machining is generally controlled by controlling pulse current generation through a power switch, the current is limited by serially connecting a current-limiting resistor, the power supply consumption is easily caused in the process, and when the distance between the electric spark electrode and the power supply is changed, easily causes that the power supply can not meet the electric demand of electric spark, reduces the precision of processing quality, in addition, in the electric spark machining, most of power switch control strings are provided with an inductor and a capacitor, and voltage and current surges are easily generated when the power switches work to influence the stability effect of an electric spark power supply.
Disclosure of Invention
The embodiment of the invention provides an electric spark voltage-stabilizing power supply to solve the problems in the background technology.
According to an embodiment of the present invention, there is provided an electric spark voltage-stabilized power supply, including: the device comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM (pulse-width modulation) driving module, a pulse chopping module and a communication module;
the power supply feedback switching control module is used for providing power supply for the electric spark and controlling the automatic switching of the electric spark power supply;
the power switch control module is connected with the output end of the power supply feedback switching control module and is used for generating pulse current through the work of the power switch;
the signal sampling and conditioning module is connected with the output end of the power switch control module and the feedback end of the power supply feedback switching control module, and is used for sampling the voltage and current signals output by the power switch control module and the feedback voltage signals output by the power supply feedback switching control module and outputting the processed voltage and current signals;
the main control module is connected with the output end of the signal sampling and conditioning module, is used for receiving the voltage and current signals output by the signal sampling and conditioning module, is connected with the control end of the power supply feedback switching control module and the driving end of the PWM driving module, and is used for outputting control signals and driving signals and respectively controlling the power supply feedback switching control module and the PWM driving module to work;
the PWM driving module is connected with the power switch control module and used for outputting a pulse width modulation signal and driving the power switch control module to work;
the pulse chopping module is connected with the output end of the power switch control module and is used for absorbing voltage and current surges generated by the electric spark voltage-stabilizing power supply;
the communication module is connected with the communication end of the main control module and used for realizing wireless communication between the user terminal and the main control module.
Compared with the prior art, the invention has the beneficial effects that: the electric spark voltage-stabilizing power supply has a simple structure, is efficient and energy-saving, effectively inhibits the influence of pulse surge, does not need a high-voltage breakdown loop, realizes the automatic switching functions of electric spark power supply on-off and power supply feedback points, ensures the stable switching and supply of the power supply, adopts the power switch control circuit to generate pulse current, adopts the operational amplifier circuit and the isolation circuit to form a voltage and current detection circuit, improves the detection precision of the voltage and the current, judges the detected voltage and the current value through an internal software system of a processor, further regulates the output pulse voltage, enables the output pulse voltage to be in a voltage-stabilizing state, and improves the working efficiency of electric spark processing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of an electric spark voltage-stabilized power supply provided by an embodiment of the invention.
Fig. 2 is a circuit diagram of an electric spark voltage-stabilizing power supply provided by an embodiment of the invention.
Fig. 3 is a schematic block diagram of a signal sampling conditioning module according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of the current signal sampling process provided in fig. 3.
Fig. 5 is a circuit diagram of the voltage signal sampling processing circuit provided in fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an electric spark voltage-stabilized power supply, including: the device comprises a power supply feedback switching control module 1, a power switch control module 2, a signal sampling conditioning module 3, a main control module 4, a PWM (pulse-width modulation) driving module 5, a pulse chopping module 6 and a communication module 7;
specifically, the power supply feedback switching control module 1 is used for providing power supply for the electric spark and controlling automatic switching of an electric spark power supply;
the power switch control module 2 is connected with the output end of the power supply feedback switching control module 1 and is used for generating pulse current through the work of a power switch;
the signal sampling and conditioning module 3 is connected with the output end of the power switch control module 2 and the feedback end of the power feedback switching control module 1, and is used for sampling the voltage and current signals output by the power switch control module 2 and the feedback voltage signals output by the power feedback switching control module 1 and outputting the processed voltage and current signals;
the main control module 4 is connected with the output end of the signal sampling and conditioning module 3, is used for receiving the voltage and current signals output by the signal sampling and conditioning module 3, is connected with the control end of the power supply feedback switching control module 1 and the drive end of the PWM drive module 5, and is used for outputting control signals and drive signals and respectively controlling the power supply feedback switching control module 1 and the PWM drive module 5 to work;
the PWM driving module 5 is connected with the power switch control module 2 and used for outputting a pulse width modulation signal and driving the power switch control module 2 to work;
the pulse chopping module 6 is connected with the output end of the power switch control module 2 and is used for absorbing voltage and current surges generated by the electric spark voltage-stabilizing power supply;
and the communication module 7 is connected with the communication end of the main control module 4 and is used for realizing wireless communication between the user terminal and the main control module 4.
In a specific embodiment, the power feedback switching control module 1 may provide power for the electric spark voltage-stabilized power supply by using a power voltage compensation method, so that the power supply meets the power consumption requirement of an electric spark; the power switch control module 2 can adopt a power switch tube to form a BUCK voltage reduction circuit to control the voltage conversion of the module; the signal sampling conditioning module 3 can detect the output voltage signal by adopting a resistance voltage division mode, and performs isolated voltage conversion and bias processing by matching with the operational amplifier and surrounding components thereof, and can detect the current signal by adopting a current transformer J1 mode, and performs voltage conversion, voltage following and voltage bias processing by matching with the operational amplifier and surrounding components thereof; the main control module 4 can adopt a Digital Signal Processor (DSP) or a Field Programmable Gate Array (FPGA) as a main control chip, analyze and process received signals through an internal software system, and record and control the voltage-stabilizing output of the electric spark power supply; the PWM driving module 5 may use an isolation driver U3 to drive the power switch control module 2 to work, which is not described herein; the pulse chopping module 6 can adopt a peak power absorption circuit to suppress voltage and current surges generated when the switching element is switched on and off; the communication module 7 may implement data interaction with the user terminal by using one of RS485 communication, ZIGBEE (ZIGBEE) communication, and GPRS (General packet radio service) communication, which is not described herein again.
Example 2: on the basis of embodiment 1, please refer to fig. 2, in an embodiment of the spark regulated power supply according to the present invention, the power feedback switching control module 1 includes a first power supply V1, a second power supply V2, a first resistor R1, a fourth resistor R4, a fifth resistor R5, a first diode D1, a first switch K1, a second relay K2, a third relay K3, a second switch K2-1, a third switch K2-2, a fourth switch K2-3, a fifth switch K2-4, a sixth switch K3-1, and a seventh switch K3-2;
specifically, the positive pole of the first power supply V1 is connected to the fourth switch K2-3, the first end of the first resistor R1, the anode of the first diode D1, the first switch K1, the sixth switch K3-1, the fifth resistor R5 and the second relay K2, the second end of the first resistor R1 is connected to the other end of the fourth switch K2-3 and to the positive pole of the second power supply V2 through the second switch K2-1, the negative pole of the second power supply V2 is connected to the first end of the fourth resistor R4 and the fifth switch K2-4 through the third switch K2-2, the other end of the fifth switch K2-4, the second end of the fourth resistor R4, the third relay K3 and the seventh switch K3-2 are connected to the negative pole of the first power supply V1, the cathode of the first diode D1 is connected to the other end of the first switch K1, and the other end of the sixth switch K1 and the other end of the first relay K1, the other end of the seventh switch K3-2 is connected to the other end of the second relay K2.
Further, the power switch control module 2 includes a first switching tube VT1, a second switching tube VT2, a first capacitor C1, a first inductor L1, and a second diode D2;
specifically, the first end of the first capacitor C1 and the collector of the first switching tube VT1 are both connected to the output end of the power feedback switching control module 1, the emitter of the first switching tube VT1 is connected to the collector of the second switching tube VT2 and the first inductor L1, and the other end of the first inductor L1 is connected to the anode of the second diode D2.
Further, the pulse chopping module 6 comprises a third diode D3, a fourth diode D4 and a spike voltage absorption circuit 601;
specifically, the anode of the third diode D3 is connected to the cathode of the second diode D2, the cathode of the third diode D3 is connected to the first terminal of the spike voltage absorbing circuit 601 and the cathode of the fourth diode D4, and the anode of the fourth diode D4 and the second terminal of the spike voltage absorbing circuit 601 are both grounded.
Further, the PWM driving module 5 includes an isolation driver U3; the master control module 4 includes a first controller U1.
Specifically, a first pulse output end of the isolation driver U3 is connected to a gate of the first switching transistor VT1, a second pulse output end of the isolation driver U3 is connected to a gate of the second switching transistor VT2, a first driving end of the first controller U1 is connected to a first input end of the isolation driver U3, and a second driving end of the first controller U1 is connected to a second input end of the isolation driver U3.
In a specific embodiment, the first switching tube VT1 and the second switching tube VT2 may be IGBTs (Insulated Gate Bipolar transistors), and the isolation driver U3 controls the switching tubes to be turned off to generate a pulse current; the isolation driver U3 can be selected as EXB841/840 and has an IGBT overcurrent protection function; the first switch K1 can be a relay contact switch (not shown) which is controlled by the first controller U1 and is a normally open contact; the first resistor R1 and the fourth resistor R4 are compensation resistors, so that electric spark damage caused by overhigh power supply output during switching is prevented; the second switch K2-1, the third switch K2-2, the fourth switch K2-3 and the fifth switch K2-4 can be contact switches of a second relay K2 and are controlled by electrifying a second relay K2, wherein the second switch K2-1 and the third switch K2-2 are normally open contacts, and the fourth switch K2-3 and the fifth switch K2-4 are normally closed contacts; the sixth switch K3-1 and the seventh switch K3-2 can be contact switches of a third relay K3 and are electrically controlled by a third relay K3, wherein the sixth switch K3-1 is a normally closed contact, and the seventh switch K3-2 is a normally open contact; the second diode D2 is connected in series with the output end of the inductor, so that the phenomenon of current backflow caused by gap voltage oscillation can be prevented; the first controller U1 can select a digital signal processor using the TMS320F28035 as a control core, and has the advantages of high speed, high control accuracy and the like.
Example 3: based on embodiment 1, referring to fig. 2, fig. 3, fig. 4 and fig. 5, in an embodiment of the electric spark regulated power supply according to the present invention, the signal sampling and conditioning module 3 includes a current signal sampling unit 301, a current signal conditioning unit 302, a first voltage signal sampling unit 303, a second voltage signal sampling unit 304 and a second voltage signal conditioning unit 305;
specifically, the current signal sampling unit 301 is configured to sample a current signal output by the power switch control module 2;
a current signal conditioning unit 302, configured to perform voltage conversion, voltage following, and voltage bias processing on the sampled current signal;
a first voltage signal sampling unit 303, configured to sample a power supply in the power supply feedback switching control module 1;
a second voltage signal sampling unit 304, configured to sample a voltage signal output by the power switch control module 2;
a second voltage signal conditioning unit 305, configured to perform isolated voltage conversion and bias processing on the sampled voltage signal; the first end of the current signal sampling unit 301 and the first end of the second voltage signal sampling unit 304 are both connected to the output end of the power switch control module 2, the second end of the current signal sampling unit 301 is connected to the second input end of the main control module 4 through the current signal conditioning unit 302, the second end of the second voltage signal sampling unit 304 is connected to the third input end of the main control module 4 through the second voltage signal conditioning unit 305, and the first voltage signal sampling unit 303 is connected to the first input end of the main control.
Further, the current signal sampling unit 301 includes a current transformer J1; the current signal conditioning unit 302 comprises a sixth resistor R6, a second capacitor C2, a first operational amplifier a1, a seventh resistor R7, an eighth resistor R8, a third capacitor C3, a ninth resistor R9, a first power supply VREFT, a first resistor R1, a second operational amplifier a2 and a tenth resistor R10;
specifically, the output end of the current transformer J1 is connected to the sixth resistor R6, the second capacitor C2 and the same-phase end of the first operational amplifier a1, the other end of the sixth resistor R6 and the other end of the second capacitor C2 are both grounded, the inverting end of the first operational amplifier a1 is connected to the output end of the first operational amplifier a1 and the eighth resistor R8 through the seventh resistor R7, the other end of the eighth resistor R8 is connected to the third capacitor C3, the ninth resistor R9 and the same-phase end of the second operational amplifier a2, the other end of the third capacitor C3 and the other end of the ninth resistor R9 are both connected to the first power source VREF, and the inverting end of the second operational amplifier a2 is connected to the output end of the second operational amplifier a2 and the second input end of the first controller U1 through the tenth resistor R10.
Further, the first voltage signal sampling unit 303 includes a second resistor R2 and a third resistor R3;
specifically, a first end of the second resistor R2 is connected to a second end of the first resistor R1, a second end of the second resistor R2 is connected to a first end of the third resistor R3 and a first input end of the first controller U1, and a second end of the third resistor R3 is connected to a first end of the fourth resistor R4.
Further, the second voltage signal sampling unit 304 includes a twelfth resistor R12 and an eleventh resistor R11; the second voltage signal conditioning unit 305 includes a fourth capacitor C4, a thirteenth resistor R13, a fifth capacitor C5, a sixth capacitor C6, a second power supply +5V, a first coupler U2, a third operational amplifier A3, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, and a seventeenth resistor R17;
specifically, the eleventh resistor R11 is connected to the twelfth resistor R12, the fourth capacitor C4 and the thirteenth resistor R13, the other end of the thirteenth resistor R13 is connected to the second end of the first coupler U2, the first end of the first coupler U2 is connected to the second power supply +5V and is connected to the third end of the first coupler U2, the fourth end, the fifth end and the ground end of the first coupler U2 through the fifth capacitor C5, the sixth end of the first coupler U2 is connected to the seventeenth resistor R17 and the non-inverting end of the third operational amplifier A3 through the sixteenth resistor R16, the seventh end of the first coupler U2 is connected to the inverting end of the third operational amplifier A3 through the fifteenth resistor R15 and is connected to the output end of the third operational amplifier A3 and the third input end of the first controller U1 through the fourteenth resistor R14, and the other end of the twelfth resistor R35r 12, the fourth end of the fourth capacitor C4 and the seventeenth resistor R17 are all grounded.
In a specific embodiment, the current transformer J1 may select a hall current sensor, and collects a current signal output by the electric spark power supply in an isolated manner; the sixth resistor R6 constitutes a voltage conversion circuit for converting the current signal sampled by the current transformer J1 into a voltage signal; the first operational amplifier A1 and the second operational amplifier A2 can be selected from a TLC2272 operational amplifier to form a voltage follower; the ninth resistor is a bias resistor, and the voltage signal is biased, so that the sampling precision of small current is improved; the first coupler U2 can be selected as an HCPL7840 photocoupler to realize signal isolation; the third operational amplifier a3 is a differential operational amplifier composed of a TLC2272 operational amplifier, and is matched with surrounding components to realize voltage signal conversion and bias.
In the embodiment of the invention, a direct current power supply is used as a voltage-stabilizing power supply of the electric spark and is transmitted to a power switch control module 2 through a power supply feedback switching control module 1, wherein a main control module 4 samples and conditions the output voltage and current of the power switch control module 2 through a signal sampling conditioning module 3, a software system in the main control module 4 analyzes and processes a sampling signal and further sends a PWM signal to a PWM driving module 5, the PWM driving module 5 further outputs the PWM signal to the power switch control module 2, so as to control a power switch to output required stable pulse voltage, when the signal sampling conditioning module 3 detects that the output voltage can not reach the working voltage meeting the electric spark no matter how the output voltage is adjusted, the main control module 4 controls the power supply feedback switching control module 1 to switch the power supply, and then adjusts the power switch control module 2 through the sampling signal output by the signal conditioning sampling module 3, then outputting the stable pulse voltage again, and transmitting the sampled voltage and current signals and the control signals output by the main control module 4 to the user terminal through the communication module 7 to realize data interaction; in the power supply feedback switching control module 1, the first controller U1 controls the first switch K1 to be closed, the third relay K3 is powered on to act, and the second relay K2 is powered on to work, so that the switching of a power supply is realized, and finally, the power supply output voltage stabilization is realized by detecting and controlling the power switch control module 2 to adjust the on-off time of a switch tube; in the power switch control module 2, when the first switching tube VT1 is controlled to be on, the second switching tube VT2 is turned off, a breakdown voltage equivalent to an input voltage is provided to an electric spark gap, when the first switching tube VT1 is turned on for a short time, and the signal sampling conditioning module 3 does not detect gap breakdown, the first switching tube VT1 is turned off, a next electric spark machining cycle is switched on, when the first switching tube VT1 is turned on and does not reach a set breakdown time, the detection gap is broken, the gap is switched on to discharge, the first switching tube VT1 is continuously turned on until abnormal discharge, the first switching tube VT1 is turned off, after the set dead time, the second switching tube VT2 is turned on, a follow current of the first inductor L1 is increased until the follow current is 0, the second switching tube VT2 is turned off, and the working state of the power switching tube is repeated, thereby realizing an electric spark machining cycle.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An electric spark voltage-stabilizing power supply is characterized in that:
this electric spark steady voltage power supply includes: the device comprises a power supply feedback switching control module, a power switch control module, a signal sampling conditioning module, a main control module, a PWM (pulse-width modulation) driving module, a pulse chopping module and a communication module;
the power supply feedback switching control module is used for providing power supply for the electric spark and controlling the automatic switching of the electric spark power supply;
the power switch control module is connected with the output end of the power supply feedback switching control module and is used for generating pulse current through the work of the power switch;
the signal sampling and conditioning module is connected with the output end of the power switch control module and the feedback end of the power supply feedback switching control module, and is used for sampling the voltage and current signals output by the power switch control module and the feedback voltage signals output by the power supply feedback switching control module and outputting the processed voltage and current signals;
the main control module is connected with the output end of the signal sampling and conditioning module, is used for receiving the voltage and current signals output by the signal sampling and conditioning module, is connected with the control end of the power supply feedback switching control module and the driving end of the PWM driving module, and is used for outputting control signals and driving signals and respectively controlling the power supply feedback switching control module and the PWM driving module to work;
the PWM driving module is connected with the power switch control module and used for outputting a pulse width modulation signal and driving the power switch control module to work;
the pulse chopping module is connected with the output end of the power switch control module and is used for absorbing voltage and current surges generated by the electric spark voltage-stabilizing power supply;
the communication module is connected with the communication end of the main control module and used for realizing wireless communication between the user terminal and the main control module.
2. The electric spark voltage-stabilizing power supply according to claim 1, wherein the power supply feedback switching control module comprises a first power supply, a second power supply, a first resistor, a fourth resistor, a fifth resistor, a first diode, a first switch, a second relay, a third relay, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch and a seventh switch;
the positive pole of the first power supply is connected with the fourth switch, the first end of the first resistor, the positive pole of the first diode, the first switch, the sixth switch, the fifth resistor and the second relay, the second end of the first resistor is connected with the other end of the fourth switch and is connected with the positive pole of the second power supply through the second switch, the negative pole of the second power supply is connected with the first end of the fourth resistor and the fifth switch through the third switch, the other end of the fifth switch, the second end of the fourth resistor, the third relay and the seventh switch are connected with the negative pole of the first power supply, the cathode of the first diode is connected with the other end of the first switch, the other end of the third relay is connected with the other end of the fifth resistor and the other end of the sixth switch, and the other end of the seventh switch is connected with the other end of the second relay.
3. The electric spark voltage-stabilized power supply according to claim 1, wherein the power switch control module comprises a first switch tube, a second switch tube, a first capacitor, a first inductor and a second diode;
the first end of the first capacitor and the collector of the first switch tube are both connected with the output end of the power supply feedback switching control module, the emitter of the first switch tube is connected with the collector of the second switch tube and the first inductor, and the other end of the first inductor is connected with the anode of the second diode.
4. The spark regulated power supply according to claim 3, wherein said PWM driving module includes an isolation driver; the master control module includes a first controller.
The first pulse output end of the isolation driver is connected with the grid electrode of the first switch tube, the second pulse output end of the isolation driver is connected with the grid electrode of the second switch tube, the first driving end of the first controller is connected with the first input end of the isolation driver, and the second driving end of the first controller is connected with the second input end of the isolation driver.
5. The electric spark voltage-stabilized power supply according to claim 4, wherein the signal sampling and conditioning module comprises a current signal sampling unit, a current signal conditioning unit, a first voltage signal sampling unit, a second voltage signal sampling unit and a second voltage signal conditioning unit;
the current signal sampling unit is used for sampling the current signal output by the power switch control module;
the current signal conditioning unit is used for carrying out voltage conversion, voltage following and voltage bias processing on the sampled current signal;
the first voltage signal sampling unit is used for sampling the power supply in the power supply feedback switching control module;
the second voltage signal sampling unit is used for sampling the voltage signal output by the power switch control module;
the second voltage signal conditioning unit is used for realizing the transformation and bias processing of the isolation voltage for the sampled voltage signal;
the first end of the current signal sampling unit and the first end of the second voltage signal sampling unit are connected with the output end of the power switch control module, the second end of the current signal sampling unit is connected with the second input end of the main control module through the current signal conditioning unit, the second end of the second voltage signal sampling unit is connected with the third input end of the main control module through the second voltage signal conditioning unit, and the first voltage signal sampling unit is connected with the first input end of the main control module.
6. The electric spark voltage-stabilized power supply according to claim 5, wherein the current signal sampling unit comprises a current transformer; the current signal conditioning unit comprises a sixth resistor, a second capacitor, a first operational amplifier, a seventh resistor, an eighth resistor, a third capacitor, a ninth resistor, a first power supply, a first resistor, a second operational amplifier and a tenth resistor;
the output end of the current transformer is connected with the in-phase end of the sixth resistor, the second capacitor and the first capacitor, the other end of the sixth resistor and the other end of the second capacitor are grounded, the inverting end of the first capacitor is connected with the output end of the first capacitor and the eighth resistor through the seventh resistor, the other end of the eighth resistor is connected with the third capacitor, the in-phase end of the ninth resistor and the second capacitor, the other end of the third capacitor and the other end of the ninth resistor are connected with the first power supply, and the inverting end of the second movement is connected with the output end of the second capacitor and the second input end of the first controller through the tenth resistor.
7. The electric spark voltage-stabilized power supply according to claim 5, wherein the first voltage signal sampling unit comprises a second resistor and a third resistor;
the first end of the second resistor is connected with the second end of the first resistor, the second end of the second resistor is connected with the first end of the third resistor and the first input end of the first controller, and the second end of the third resistor is connected with the first end of the fourth resistor.
8. The electric spark voltage-stabilized power supply according to claim 5, wherein the second voltage signal sampling unit comprises a twelfth resistor and an eleventh resistor; the second voltage signal conditioning unit comprises a fourth capacitor, a thirteenth resistor, a fifth capacitor, a sixth capacitor, a second power supply, a first coupler, a third operational amplifier, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor;
the eleventh resistor is connected with the twelfth resistor, the fourth capacitor and the thirteenth resistor, the other end of the thirteenth resistor is connected with the second end of the first coupler, the first end of the first coupler is connected with the second power supply and is connected with the third end of the first coupler, the fourth end, the fifth end and the ground end of the first coupler through the fifth capacitor, the sixth end of the first coupler is connected with the seventeenth resistor and the in-phase end of the third operational amplifier through the sixteenth resistor, the seventh end of the first coupler is connected with the inverting end of the third operational amplifier through the fifteenth resistor and is connected with the output end of the third operational amplifier and the third input end of the first controller through the fourteenth resistor, and the other end of the twelfth resistor, the other end of the fourth capacitor and the other end of the seventeenth resistor are all grounded.
9. The electric spark voltage-stabilized power supply according to claim 3, wherein the pulse chopping module comprises a third diode, a fourth diode and a spike voltage absorption circuit;
the anode of the third diode is connected with the cathode of the second diode, the cathode of the third diode is connected with the first end of the peak voltage absorbing circuit and the cathode of the fourth diode, and the anode of the fourth diode and the second end of the peak voltage absorbing circuit are both grounded.
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| CN114582299A (en) * | 2022-03-24 | 2022-06-03 | Tcl华星光电技术有限公司 | Polar plate voltage regulating circuit and method |
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| CN115388433A (en) * | 2022-10-13 | 2022-11-25 | 深圳国爱全电化智慧科技有限公司 | Electric firing circuit and electric fire range |
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