CN101420811B - Vehicular HID lamp ballast for implementing soft switch PWM technique based on digital control - Google Patents
Vehicular HID lamp ballast for implementing soft switch PWM technique based on digital control Download PDFInfo
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- CN101420811B CN101420811B CN2007100473895A CN200710047389A CN101420811B CN 101420811 B CN101420811 B CN 101420811B CN 2007100473895 A CN2007100473895 A CN 2007100473895A CN 200710047389 A CN200710047389 A CN 200710047389A CN 101420811 B CN101420811 B CN 101420811B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention discloses a vehicle HID lamp ballast which realizes a soft-switching PWM technology based on digital control, comprising a power management module, a flyback DC converter, a main core module, a current auxiliary network, a DC-AC converter and a voltage booster circuit; the vehicle HID lamp ballast is characterized in that the main core module comprises a single chip microcomputer, an I/O interface and an A/D conversion module which are respectively connected with input terminals of the single chip microcomputer and a digital PWM module which is connected with the output terminal of the single-chip microcomputer; the vehicle HID lamp ballast further comprises the flyback DC converter which is connected between the power management module and the current auxiliary network and a drain-source voltage sampling circuit which is connected between a MOS switch tube of the flyback DC converter and the I/O interface; the output terminals of the digital PWM module are respectively connected with a gate of the MOS switch tube of the flyback DC converter and the control input terminal of the DC-AC converter. A drive signal of the flyback DC converter is controlled in an MCU digital control method, thereby realizing the use of the soft-switching PWM technology to control an HID lamp. The vehicle HID lamp ballast can effectively simplify the hardware structure of the vehicle HID ballast and reduce the overall power consumption and the heat value; and the vehicle HID lamp ballast can maintain the very high conversion efficiency within a wide change range of the voltage of a vehicle power supply.
Description
Technical field
The present invention relates to a kind of Vehicular HID lamp electronic ballast based on digital control realization soft-switch PWM (pulse-width modulation) technology.
Background technology
Xenon HID (High Intensity Discharge) high-voltage gas discharging light, it has the light efficiency height, and color rendering is good, advantages such as life-span length, 35W HID lamp has obtained very big concern and application at automotive field.
The electric ballast that the Vehicular HID lamp adopts usually, its structure is as shown in Figure 1, mainly comprises power management module 10, DC-DC converter 11, booster circuit 12, direct-current-alternating-current converter 13, MCU 14, HID lamp device 15.Wherein, power management module 10 links to each other with automobile storage battery 12V, comprises the filtering and the reverse polarity protection that import cell voltage; DC-DC converter 11 is transformed to the 85V direct voltage with cell voltage; Booster circuit 12 produces the voltage of supreme kilovolt of hundreds of when starting, as the input of high-voltage ignition device; Direct-current-alternating-current converter 13 is the square wave of low-frequency alternating with the 85V dc voltage conversion, offers the HID lamp; MCU 14 is the supervision and management center of whole system.
Above-mentioned Vehicular HID lamp electronic ballast; Owing to do not adopt soft switch PWM technique; Make switching tube that very big noise is arranged like this, the heating quantitative change of ballast device is big, and the conversion efficiency of circuit is on the low side; And car light is because its running environment abominable, and the conversion efficiency and the caloric value of ballast device had high requirement; It is more that the HID ballast of this kind form uses number of elements in addition, has the big and high problem of cost of volume.
In addition, some soft switch PWM technique of having developed is based on hard-wired, is difficult to accomplish in the very wide excursion of vehicle power voltage, keep very high conversion efficiency.
Summary of the invention
The objective of the invention is a kind of Vehicular HID lamp electronic ballast that provides based on digital control realization soft switch PWM technique in order to solve the problems referred to above that prior art exists; Make the electric ballast temperature rise low, in the very wide excursion of vehicle power voltage, reach conversion efficiency height, good reliability, and help reducing volume with reduce cost.
To achieve these goals; A kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique of the present invention comprises power management module, DC-DC converter, main nucleus module, current auxiliary network, direct-current-alternating-current converter, booster circuit; Be characterized in,
Also comprise a MOS switching tube drain-source voltage sample circuit;
Described DC-DC converter is made up of the inverse-excitation type DC converter; Described inverse-excitation type DC converter is connected between power management module and the current auxiliary network;
Described main nucleus module comprises a MCU or DSP single-chip microcomputer, an I/O interface, an A/D modular converter and a digital PWM module; Described I/O interface is connected with the input of single-chip microcomputer respectively with the A/D modular converter, and the input of described A/D modular converter is connected with inverse-excitation type DC converter output; The output of described single-chip microcomputer is connected with the input of digital PWM module; The output of described digital PWM module is connected with the control input end of inverse-excitation type DC converter and direct-current-alternating-current converter respectively;
Described MOS switching tube drain-source voltage sample circuit is connected between the I/O interface of inverse-excitation type DC converter and main nucleus module;
The output of described current auxiliary network is connected with the input of direct-current-alternating-current converter, and the output of this direct-current-alternating-current converter is connected with high-voltage gas discharging light with high-voltage ignition device respectively;
The input of described booster circuit is connected with the output of inverse-excitation type DC converter, and the output of this booster circuit is connected with the input of high-voltage ignition device.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique, wherein, described inverse-excitation type DC converter mainly is made up of the MOS switching tube that a transformer and is connected this transformer one end; Described transformer one end and MOS switching tube tie point are wired to the input of drain-source voltage sample circuit; Described transformer secondary output coil one end connects the input of booster circuit.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique, wherein, an output of the digital PWM module of described main nucleus module is connected with the grid of the MOS switching tube of described inverse-excitation type DC converter.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique; Wherein, Described its input of MOS switching tube drain-source voltage sample circuit is connected on drain-source the two poles of the earth of MOS switching tube in the inverse-excitation type DC converter, and its output is connected with the I/O interface.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique; Wherein, Described leakage MOS switching tube source voltage sampling circuit is made up of the resistance of two series connection, and the tie point of this two resistance is connected with the I/O interface of main nucleus module through lead.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique; Wherein, Described MOS switching tube drain-source voltage sample circuit is made up of the resistance and an operational amplifier of two series connection; The tie point of this two resistance is connected with the input of operational amplifier through lead, and the output of this operational amplifier is connected with the I/O interface of main nucleus module.
Above-mentioned a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique, wherein, the input of described power management module is connected with storage battery.
The present invention is based on the Vehicular HID lamp ballast of digital control realization soft switch PWM technique owing to adopted above technical scheme; Compare with hardware circuit control realization soft switch PWM technique, the soft switch PWM technique of the digital control realization that the present invention adopted has following advantage:
1. the realization of the property set of numeral and intelligent control: set through program parameter; Can be arranged under the different input voltages main MOS switching tube drain-source the two poles of the earth voltage zero-cross test point in the inverse-excitation type DC converter; Thereby can realize the softer switch of wide region, make electronic ballast system can in wideer input battery voltage range, realize higher efficient.
2. simplify hardware configuration and reduce overall power, simple based on the hardware circuit of the soft switch PWM technique of digital control realization, reduced the component number on the pcb board, reduced the volume of electric ballast, reduced the power consumption and the heating of ballast system; The automobile front system is near enging cabin; This extremely bad working environment be very strict to the requirement of Vehicular HID lamp electronic ballast system; Reducing of electric ballast volume and heating is very favourable, and the simplification of hardware has simultaneously also reduced cost.
3, realized the former limit main switch of transformer and the soft switch work of secondary rectifier diode in the DC-DC converter, reduced the noise of switching tube, can effectively avoid magnetic flux saturated, made HID lamp steady operation in the battery-voltage fluctuation scope; The temperature rise of whole ballast system is reduced, power consumption reduces, conversion efficiency uprises, circuit reliability service more; Efficient can reach 87%.
Description of drawings
Concrete characteristic of the present invention, performance are further described by following embodiment and accompanying drawing thereof.
Fig. 1 is a prior art Vehicular HID lamp electric ballast structured flowchart commonly used.
Fig. 2 is the electrical block diagram that the present invention is based on the Vehicular HID lamp ballast of digital control realization soft switch PWM technique.
Fig. 3 the present invention is based on the overall electrical block diagram that drain-source voltage sample circuit in the Vehicular HID lamp ballast of digital control realization soft switch PWM technique adopts a kind of embodiment.
Fig. 4 the present invention is based on the overall electrical block diagram that drain-source voltage sample circuit in the Vehicular HID lamp ballast of digital control realization soft switch PWM technique adopts another kind of embodiment.
Embodiment
See also Fig. 2, this is the electrical block diagram that the present invention is based on the Vehicular HID lamp ballast of digital control realization soft switch PWM technique.The Vehicular HID lamp electronic ballast that the present invention is based on digital control realization soft switch PWM technique comprises power management module 20, inverse-excitation type DC converter 21, booster circuit 22, current auxiliary network 23, direct-current-alternating-current converter 24, drain-source voltage sample circuit 25, main nucleus module 26.
The input of described power management module 20 is connected with storage battery.Its role is to battery tension sample, filtering and monitoring.
Described main nucleus module 26 comprises a MCU or DSP single-chip microcomputer 261, an I/O interface 262, an A/D modular converter 263 and a digital PWM module 264.I/O interface 262 is connected with the input of single-chip microcomputer 261 respectively with A/D modular converter 263, and the output of single-chip microcomputer 261 is connected with digital PWM module 264 inputs; The main effect of this module is through lamp being pressed sampled datas such as lamp stream handle, controlling the switching frequency and the duty ratio of inverse-excitation type DC converter MOS switching tube, with control HID lamp.
Described inverse-excitation type DC converter 21 is connected between power management module 20 and the current auxiliary network 23; When stable state, the effect of this circuit module is that cell voltage is risen to 85V.
The output of described current auxiliary network 23 is connected with the input of direct-current-alternating-current converter 24, and the output of this direct-current-alternating-current converter 24 is connected with high-voltage gas discharging light 272 with the high-voltage ignition device 271 of load 27 respectively; The effect of this circuit module is, starting the back at lamp provides extra electric current to lamp, can raise rapidly with the temperature that guarantees the lamp electrode, works long hours in glow discharge state after avoiding lamp to start or extinguishes; It only provides energy in lamp startup of short duration a period of time of back to lamp, does not then participate in work during operate as normal.
The input of described booster circuit 22 is connected with the output of inverse-excitation type DC converter 21, and the output of this booster circuit 22 is connected with the input of high-voltage ignition device 271; It will produce the high pressure about 800V, export to high-voltage ignition device 271, and the voltage that high-voltage ignition device 271 produces several kilovolts to tens kilovolts is lighted the HID lamp.
Described drain-source voltage sample circuit 25 is connected between the I/O interface 262 of source drain terminal and main nucleus module of the MOS switching tube in the inverse-excitation type DC converter 21; The effect of drain-source voltage sample circuit 25 is to obtain the drain-source voltage sampled signal, exports to main nucleus module.
The input of the A/D modular converter 263 of described main nucleus module is connected with inverse-excitation type DC converter 21 outputs;
The output of the digital PWM module 264 of described main nucleus module respectively with inverse-excitation type DC converter 21 in MOS switching tube grid and the control input end of direct-current-alternating-current converter 24 be connected.
In a kind of automobile-used xenon high-pressure discharge lamp of the present invention (HID) electric ballast, described inverse-excitation type DC converter 21 mainly is made up of the MOS switching tube Q1 that a transformer T1 and is connected this transformer one end; Described this transformer one end and MOS switching tube tie point are connected to the input of drain-source voltage sample circuit through a lead; In the present embodiment; Described its input of drain-source voltage sample circuit is connected on drain-source the two poles of the earth of switching tube in the inverse-excitation type DC converter, and its output is connected with the I/O interface; Described transformer secondary output coil one end connects the input of booster circuit.An output of the digital PWM module of described main nucleus module is connected with the grid of the MOS switching tube of described inverse-excitation type DC converter.
The present invention is through the sample voltage at switching tube drain-source the two poles of the earth in the inverse-excitation type DC converter 21 of drain-source voltage sample circuit 25; Sampled signal is introduced the I/O mouth or the A/D mouth of main nucleus module 26; Digital control method through module 26; Come the drive signal of switching tube in the control module 21, realize soft switch PWM technique.
See also Fig. 3, this is to the present invention is based on the overall electrical block diagram that drain-source voltage sample circuit in the Vehicular HID lamp ballast of digital control realization soft switch PWM technique adopts a kind of embodiment.The Vehicular HID lamp electronic ballast that the present invention is based on digital control realization soft switch PWM technique comprises power management module 30, inverse-excitation type DC converter 31, booster circuit 32, current auxiliary network 33, direct-current-alternating-current converter 34, drain-source voltage sample circuit 35, main nucleus module 36.
Described main nucleus module 36 comprises a single-chip microcomputer 361, an I/O interface 362, an A/D modular converter 363 and a digital PWM module 364.I/O interface 362 is connected with the input of single-chip microcomputer 361 respectively with A/D modular converter 363, and the output of single-chip microcomputer 361 is connected with digital PWM module 364 inputs.Drain-source voltage sample circuit 35 described in this embodiment is made up of resistance R that is in series 1 and resistance R 2; One end of resistance R 1 with link to each other with the I/O mouth of main nucleus module 36 again after an end of resistance R 2 is connected; The other end of resistance R 1 is connected on the drain electrode of inverse-excitation type DC converter 31 switching tubes, and the other end of resistance R 2 is connected on the source electrode of switching tube.
See also shown in Figure 4ly, this is to the present invention is based on the overall electrical block diagram that drain-source voltage sample circuit in the Vehicular HID lamp ballast of digital control realization soft switch PWM technique adopts another kind of embodiment.The Vehicular HID lamp electronic ballast that the present invention is based on digital control realization soft switch PWM technique comprises power management module 40, inverse-excitation type DC converter 41, booster circuit 42, current auxiliary network 43, direct-current-alternating-current converter 44, drain-source voltage sample circuit 45, main nucleus module 46.
Described main nucleus module 46 comprises a single-chip microcomputer 461, an I/O interface 462, an A/D modular converter 463 and a digital PWM module 464.I/O interface 462 is connected with the input of single-chip microcomputer 461 respectively with A/D modular converter 463, and the output of single-chip microcomputer 461 is connected with digital PWM module 464 inputs.
Drain-source voltage sample circuit 45 described in this embodiment; Comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, operational amplifier OP1; One end of resistance R 1 with link to each other with an end of resistance R 3 again after an end of resistance R 2 is connected; The other end of resistance R 1 is connected on the drain electrode of inverse-excitation type DC converter 41 switching tubes; The other end of resistance R 2 is connected on the source electrode of inverse-excitation type DC converter 41 switching tubes, and the other end of resistance R 3 is connected on the positive input terminal of operational amplifier OP1, and one of resistance R 4 terminates at the negative input end of operational amplifier OP1; The other end of resistance R 4 is connected on the output (resistance R 4 can also be short-circuit line) of operational amplifier OP1, and the output of operational amplifier OP1 is connected on 46 I/O mouth or A/D mouth.
Switching tube drain-source two pole tensions in detecting inverse-excitation type DC converter 41 drop to when almost nil, main nucleus module 46 control figure PWM modules, and the output high level makes switching tube open-minded.
A kind of Vehicular HID lamp electronic ballast of the present invention based on digital control realization soft switch PWM technique; Control the drive signal of inverse-excitation type DC converter through the digital control method of MCU; Realization is with soft switch PWM technique control HID lamp; The hardware configuration of Vehicular HID ballast be can effectively simplify, and overall power and caloric value reduced; In the very wide excursion of vehicle power voltage, keep very high conversion efficiency.And help reducing volume and reduce cost.
Claims (7)
1. the Vehicular HID lamp ballast based on digital control realization soft switch PWM technique comprises power management module, DC-DC converter, main nucleus module, current auxiliary network, direct-current-alternating-current converter, booster circuit; It is characterized in that,
Also comprise a MOS switching tube drain-source voltage sample circuit;
Described DC-DC converter is made up of the inverse-excitation type DC converter; Described inverse-excitation type DC converter is connected between power management module and the current auxiliary network;
Described main nucleus module comprises a MCU or DSP single-chip microcomputer, an I/O interface, an A/D modular converter and a digital PWM module; Described I/O interface is connected with the input of single-chip microcomputer respectively with the A/D modular converter, and the input of described A/D modular converter is connected with inverse-excitation type DC converter output; The output of described single-chip microcomputer is connected with the input of digital PWM module; The output of described digital PWM module is connected with the control input end of inverse-excitation type DC converter and direct-current-alternating-current converter respectively;
Described MOS switching tube drain-source voltage sample circuit is connected between the I/O interface of inverse-excitation type DC converter and main nucleus module;
The output of described current auxiliary network is connected with the input of direct-current-alternating-current converter, and the output of this direct-current-alternating-current converter is connected with high-voltage gas discharging light with high-voltage ignition device respectively;
The input of described booster circuit is connected with the output of inverse-excitation type DC converter, and the output of this booster circuit is connected with the input of high-voltage ignition device.
2. a kind of Vehicular HID lamp ballast according to claim 1 based on digital control realization soft switch PWM technique; It is characterized in that described inverse-excitation type DC converter mainly is made up of the MOS switching tube that a transformer and is connected this transformer one end; Described transformer one end and MOS switching tube tie point are wired to the input of drain-source voltage sample circuit; Described transformer secondary output coil one end connects the input of booster circuit.
3. a kind of Vehicular HID lamp ballast according to claim 2 based on digital control realization soft switch PWM technique; It is characterized in that an output of the digital PWM module of described main nucleus module is connected with the grid of the MOS switching tube of described inverse-excitation type DC converter.
4. a kind of Vehicular HID lamp ballast according to claim 1 based on digital control realization soft switch PWM technique; It is characterized in that; Described its input of MOS switching tube drain-source voltage sample circuit is connected on drain-source the two poles of the earth of MOS switching tube in the inverse-excitation type DC converter, and its output is connected with the I/O interface.
5. according to claim 1 or 4 described a kind of Vehicular HID lamp ballasts based on digital control realization soft switch PWM technique; It is characterized in that; Described MOS switching tube drain-source voltage sample circuit is made up of the resistance of two series connection, and the tie point of this two resistance is connected with the I/O interface of main nucleus module through lead.
6. according to claim 1 or 4 described a kind of Vehicular HID lamp ballasts based on digital control realization soft switch PWM technique; It is characterized in that; Described MOS switching tube drain-source voltage sample circuit is made up of the resistance and an operational amplifier of two series connection; The tie point of this two resistance is connected with the input of operational amplifier through lead, and the output of this operational amplifier is connected with the I/O interface of main nucleus module.
7. a kind of Vehicular HID lamp ballast based on digital control realization soft switch PWM technique according to claim 1 is characterized in that the input of described power management module is connected with storage battery.
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| CN2007100473895A CN101420811B (en) | 2007-10-25 | 2007-10-25 | Vehicular HID lamp ballast for implementing soft switch PWM technique based on digital control |
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| CN2007100473895A CN101420811B (en) | 2007-10-25 | 2007-10-25 | Vehicular HID lamp ballast for implementing soft switch PWM technique based on digital control |
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| CN101420811B true CN101420811B (en) | 2012-02-01 |
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Families Citing this family (7)
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| CN102200779B (en) * | 2011-04-01 | 2013-03-13 | 深圳市众鸿科技股份有限公司 | Vehicle-mounted electronic system and energy consumption control method thereof |
| CN102281686B (en) * | 2011-08-16 | 2013-11-06 | 科博达技术有限公司 | Compensation control device for LED (Light Emitting Diode) lamp during rapid falling of input voltage and method thereof |
| CN103023078B (en) * | 2011-09-24 | 2015-05-20 | 大洋电机新动力科技有限公司 | Direct current power supply system |
| CN103237392A (en) * | 2013-05-07 | 2013-08-07 | 江苏梁丰照明有限公司 | Light emitting diode (LED) illumination control circuit and control flow |
| CN106253675A (en) * | 2016-08-17 | 2016-12-21 | 湖南纽帕科技有限公司 | A kind of vehicular high-power used for electric vehicle two-way DC/DC device |
| CN106385755B (en) * | 2016-10-31 | 2018-10-02 | 科博达技术股份有限公司 | Constant voltage and current limiting control circuit applied to gas discharge lamp ballast |
| CN109150154B (en) * | 2018-10-09 | 2023-08-22 | 东莞广泽汽车饰件有限公司 | Inductive switch structure for vehicle |
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| CN2907171Y (en) * | 2006-05-10 | 2007-05-30 | 周春香 | Low-frequency sine wave electronic ballast for HID lamp |
| CN201119093Y (en) * | 2007-10-25 | 2008-09-17 | 科博达技术有限公司 | Car HID lamp ballast for realizing soft switch PWM technology based on digital control |
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| CN2907171Y (en) * | 2006-05-10 | 2007-05-30 | 周春香 | Low-frequency sine wave electronic ballast for HID lamp |
| CN201119093Y (en) * | 2007-10-25 | 2008-09-17 | 科博达技术有限公司 | Car HID lamp ballast for realizing soft switch PWM technology based on digital control |
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