CN109378983A - A kind of power supply device - Google Patents

A kind of power supply device Download PDF

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Publication number
CN109378983A
CN109378983A CN201811231469.0A CN201811231469A CN109378983A CN 109378983 A CN109378983 A CN 109378983A CN 201811231469 A CN201811231469 A CN 201811231469A CN 109378983 A CN109378983 A CN 109378983A
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CN
China
Prior art keywords
circuit
waveform
power supply
output end
supply device
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Pending
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CN201811231469.0A
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Chinese (zh)
Inventor
丁振伟
孙慧敏
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Jinhua Cheng Technology (shenzhen) Co Ltd
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Jinhua Cheng Technology (shenzhen) Co Ltd
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Application filed by Jinhua Cheng Technology (shenzhen) Co Ltd filed Critical Jinhua Cheng Technology (shenzhen) Co Ltd
Priority to CN201811231469.0A priority Critical patent/CN109378983A/en
Publication of CN109378983A publication Critical patent/CN109378983A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21Conversion of ac power input into dc power output without possibility of reversal 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
    • H02M7/217Conversion of ac power input into dc power output without possibility of reversal 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M11/00Power conversion systems not covered by the preceding groups

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The invention discloses a kind of power supply device, including processor, high-frequency inversion bridge, high frequency transformer, rectification circuit, waveform convertion circuit and waveform convertion driving circuit, the control terminal of high-frequency inversion bridge is connect by high-frequency inversion driving circuit with processor signal;High-frequency inversion bridge is used to adjust the input waveform of power supply, converts waves AC for direct current wave;High frequency transformer is used for the input terminal and output end of isolated power supply, and energy is transmitted to secondary side from primary side;Rectification circuit is used to adjust the waveform of input voltage;The input terminal and output end of waveform convertion driving circuit are electrically connected with the control terminal of processor and waveform convertion circuit respectively, and waveform convertion driving circuit is used for drive waveforms translation circuit;Waveform convertion circuit is used to that input waveform to be transformed to required output waveform according to the driving signal of waveform convertion driving circuit.The power supply device energy output voltage and current waveform, the accurate duration for controlling wavelength, meet higher voltage-withstand test, realize high-power output, adapt to plurality of application scenes.

Description

A kind of power supply device
Technical field
The present invention relates to power technique fields, and in particular to a kind of power supply device.
Background technique
Power supply is to provide the device of power to electronic equipment, is widely used in industrial automatic control, military industry equipment, scientific research Equipment, industrial control equipment, computer and computing, communication apparatus, power equipment, instrument and meter, Medical Devices, semiconductor refrigerating heating Equal fields.
Power supply includes DC power supply and AC power source, wherein DC power supply is for providing the power supply of steady current, alternating current Source is for providing the power supply of burning voltage and frequency.User uses DC power supply or AC power source according to the different selections in field.
Due to application scenarios difference, DC power supply and AC power source can not meet different application scenarios simultaneously, cause The specifications and models of DC power supply and AC power source are various.Just there are tens of kinds for the DC power supply of different application scene, such as AC/DC Power supply, DC/DC power supply, radio station power supply, communication power supply and special power supply etc..Wherein, AC/DC power supply is to obtain energy from power grid, One or several steady dc voltages are exported by high-voltage rectifying filtering.Even simple AC/DC power supply, since difference is answered It is different with the requirement of amplitude to the waveform of the DC voltage of output, pulsewidth with scene, it is also required to not for different application scenarios The AC/DC power supply of same type causes user to have to buy various types of power supplys to meet the needs of different.
Rarely have the power supply that can export direct current and output exchange in the market, is not more not only suitable for safe voltage or less Small-power power, and be suitable for safe voltage more than large power supply, cause user to need to buy various types of power supplys It is just able to satisfy requirement of the different application scenarios to voltage or electric current etc., this is not only inconvenient to use, but also directly increases The cost of user.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of power supply device, weak to solve existing power supply adaptability, gives User cause it is inconvenient for use, the problem of increased costs.
To achieve the above object, the embodiment of the present invention provides a kind of power supply device, and the power supply device includes processor, height Frequency inverter bridge, high frequency transformer, rectification circuit, waveform convertion circuit and waveform convertion driving circuit, the high-frequency inversion bridge Control terminal is connect by high-frequency inversion driving circuit with the processor signal, the high-frequency inversion bridge, high frequency transformer, rectification Circuit and waveform convertion circuit are sequentially connected electrically;
The high-frequency inversion bridge is used to adjust the input waveform of power supply, and direct current wave is changed into waves AC;
The high frequency transformer is used for the input terminal and output end of isolated power supply, while energy being transmitted to from primary side Secondary side;
The rectification circuit is used to adjust the waveform of input voltage;
The input terminal and output end of the waveform convertion driving circuit are electric with the processor and the waveform convertion respectively The control terminal on road is electrically connected, and the waveform convertion driving circuit is for driving the waveform convertion circuit;
The waveform convertion circuit is for converting input waveform according to the driving signal of the waveform convertion driving circuit For required output waveform.
Wherein, the waveform convertion circuit includes four switching tubes, and the control terminal and waveform convertion of four switching tubes drive The output end of circuit is electrically connected, and the first end of first switch tube Q1 and third switching tube Q3 are electrically connected the output of the rectification circuit Vo1 is held, the second end of first switch tube Q1 and the first end of second switch Q2 are electrically connected the output of the waveform convertion circuit V- is held, the second end of third switching tube Q3 and the first end of the 4th switching tube Q4 are electrically connected the output end of the waveform convertion circuit V+;The second end of second switch Q2 and the second end of the 4th switching tube Q4 are electrically connected the output end Vgnd of the rectification circuit.
Wherein, the waveform convertion circuit includes a switching tube, and the control terminal of the switching tube is electrically connected the waveform The output end of driving circuit is converted, the first end of the switching tube is electrically connected the output end vo 1 of the rectification circuit, the switch The second end of pipe is electrically connected the output end V+ of the waveform convertion circuit, and the output end Vgnd of rectification circuit becomes as the waveform Change the output end V- of circuit.
Wherein, the switching tube is metal-oxide-semiconductor, IGBT pipe or triode.
Preferably, the power supply device further includes supply voltage sampling unit, the output of the supply voltage sampling unit End is electrically connected with the input terminal of the processor, the electricity for the power supply that the processor is obtained according to the supply voltage sampling unit Pressure value adjusts the driving of the high-frequency inversion bridge.
Preferably, the power supply device further includes pfc circuit and voltage and current sample circuit, the input terminal of pfc circuit and Output end is electrically connected the input terminal of power supply and the high-frequency inversion bridge, and the control terminal of pfc circuit is electrically connected the processor; The output end of the voltage and current sample circuit is electrically connected with the input terminal of the processor, and the voltage and current sample circuit is used In the voltage and current of acquisition rectification circuit output end, and voltage and current sampled value is transmitted to the processor;The processing Device adjusts the output of the high-frequency inversion bridge according to the voltage and current sampled value.
Preferably, the power supply device further includes EMI circuit, and the input terminal and output end of the EMI circuit are electrically connected respectively The input terminal of power supply and the pfc circuit is connect, the EMI is for reducing electromagnetic interference.
Preferably, the power supply device further includes host computer, the input of the output end of the host computer and the processor End electrical connection, the host computer are used for human-computer interaction, input parameter to the processor.
Wherein, the input power is alternating current or the electrical source of power of 380V.
The embodiment of the present invention has the advantages that
Power supply device provided in an embodiment of the present invention controls high-frequency inversion bridge by processor, and high-frequency inversion bridge will adjust defeated Enter the waveform of power supply, after rectified circuit rectifies, then waveform needed for being exported by waveform convertion circuit transformations, and waveform convertion electricity Road is to be driven by processor by waveform convertion driving circuit, and the waveform of waveform convertion circuit output can be accurately controlled in milli Second grade, and part pulsewidth modulation (PWM) of processor control high-frequency inversion bridge, obtain just in the input terminal of waveform convertion circuit The positive half-wave of string wave or square wave can obtain independent forward voltage, independent negative voltage, just after waveform convertion circuit transformations To impulse waveform, negative-going pulse waveform, positive negative sense assembled pulse waveform, sine wave top half, sine wave lower half portion or The complete sine wave of person, and the duration of waveform can be adjusted, that is, pass through processor, high-frequency inversion bridge, rectification circuit and waveform The mutual cooperation of translation circuit obtains accurately different types of voltage and current waveform, thus meet different application scenarios, The application surface of power supply device is expanded, user need to only buy a power supply device, can either meet such as airport and dodge to LED Bright frequency, duration, lamp brightness, the strict demand of luminous intensity, and it is able to satisfy requirement of the plating occasion to positive negative sense voltage waveform.Separately Outside, which is not only able to satisfy the application scenarios of low-power, but can by high frequency transformer by the input of power supply device and Output isolation realizes the high-power output of 20kW or more so that power supply device be made to meet 2000Vac or the test of more high voltage.This Outside, which controls waveform duration, frequency and waveform quantity by processor, avoids deviation caused by Human disturbance, The performance and quality of product are improved, while improving the quality and positioning of consumer product.
As a preferred embodiment of the embodiment of the present invention, processor obtains power supply by supply voltage sampling unit Voltage value adjusts the output of high-frequency inversion bridge, so that the input terminal of waveform convertion circuit is obtained more accurately input waveform, thus Improve the precision of power supply device output waveform.
As the another more preferred embodiment of the embodiment of the present invention, pfc circuit and voltage and current sampling is arranged in power supply device Circuit, voltage and current sample circuit are used to obtain the voltage and current value of waveform convertion circuit input end, and by the voltage and current value Processor is fed back to, processor adjusts the output waveform of high-frequency inversion bridge according to the voltage and current value of feedback, further increases wave The precision of the input waveform of the input terminal of fractal transform circuit, to further increase the precision of power supply device output waveform.
As the another preferred embodiment of the embodiment of the present invention, EMI electricity is arranged in power supply device between power supply and pfc circuit Road can reduce interference of the other electronic products of power supply and periphery to power supply device using EMI circuit, while reduce power supply dress Set the interference to power grid.
As another preferred embodiment of the embodiment of the present invention, power supply device further includes host computer, host computer, and user passes through The parameter of waveform needed for host computer inputs, state modulator high-frequency inversion bridge, the waveform convertion circuit that processor is inputted according to user Waveform needed for output, full automatic control improve efficiency and consistency, improve the quality of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the power supply device that the embodiment of the present invention 1 provides.
The structure chart of waveform convertion circuit in the power supply device that Fig. 2 provides for the embodiment of the present invention 1.
Fig. 3 is the waveform diagram of the forward dc voltage for the power supply device output that the embodiment of the present invention 1 provides.
Fig. 4 is the waveform diagram of the negative DC voltage for the power supply device output that the embodiment of the present invention 1 provides.
Fig. 5 is the waveform diagram of the forward pulse direct current pressure for the power supply device output that the embodiment of the present invention 1 provides.
Fig. 6 is the waveform diagram of the negative-going pulse DC voltage for the power supply device output that the embodiment of the present invention 1 provides.
Fig. 7 is the direct impulse for the power supply device output that the embodiment of the present invention 1 provides and the direct current of negative-going pulse combination The waveform diagram of pressure.
Fig. 8 is the waveform diagram of the sine wave for the power supply device output that the embodiment of the present invention 1 provides.
Fig. 9 is the structural schematic diagram for the power supply device that the embodiment of the present invention 2 provides.
In figure: 1- processor, 2- high-frequency inversion bridge, 3- high frequency transformer, 4- rectification circuit, 5- waveform convertion circuit, 6- Waveform convertion driving circuit, 7- high-frequency inversion driving circuit, 8- supply voltage sampling unit, 9-PFC circuit, 10- voltage and current Sample circuit, 11-EMI circuit, 12- host computer, 13- power supply.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification to be taken off The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover In enclosing.Meanwhile cited such as "upper", "lower", " left side ", the right side in this specification ", the term of " centre ", be merely convenient to chat That states is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, and is changing skill without essence It is held in art, when being also considered as the enforceable scope of the present invention.
Embodiment 1
The present embodiment provides a kind of power supply devices.As shown in Figure 1, power supply device includes processor 1, high-frequency inversion bridge 2, height Frequency power transformer 3, rectification circuit 4, waveform convertion circuit 5 and waveform convertion driving circuit 6, the control terminal of high-frequency inversion bridge 2 pass through High-frequency inversion driving circuit 7 is connect with 1 signal of processor, and high-frequency inversion bridge 2, high frequency transformer 3, rectification circuit 4 and waveform become Circuit 5 is changed to be sequentially connected electrically.Wherein,
High-frequency inversion bridge 2 is used to adjust the input waveform of power supply, converts waves AC for direct current wave.In the present embodiment, electricity Source uses alternating current or the electrical source of power of 380V, naturally it is also possible to use other types of power supply.The present embodiment is using alternating current as electricity Source is introduced.
High frequency transformer 3 is used for the input terminal and output end of isolated power supply, while energy is transmitted to pair from primary side The high-power output of 20kW or more is realized so that power supply device be made to meet 2000Vac or the test of more high voltage in side.
Rectification circuit 4 is used to adjust the waveform of input voltage.Rectification circuit 4 can use rectified current commonly used in the art Road belongs to techniques known, and in this not go into detail.
The input terminal and output end of waveform convertion driving circuit 6 control terminal with processor 1 and waveform convertion circuit 5 respectively Electrical connection, processor 1 is to 6 output waveform driving signal of waveform convertion driving circuit, and waveform convertion driving circuit 6 is according to processor 1 driving signal drive waveforms translation circuit 5.
Needed for waveform convertion circuit 5 is used to be transformed to input waveform according to the driving signal of waveform convertion driving circuit 6 Output waveform.
As shown in Fig. 2, waveform convertion circuit 5 includes four switching tube Q1, Q2, Q3, Q4, four switching tube Q1, Q2, Q3, The control terminal of Q4 is electrically connected with the output end of waveform convertion driving circuit 6.Wherein, first switch tube Q1 and third switching tube Q3 First end is electrically connected the output end vo 1 of rectification circuit, the second end of first switch tube Q1 and the first end electricity of second switch Q2 The output end V- of waveform convertion circuit is connected, the second end of third switching tube Q3 and the first end of the 4th switching tube Q4 are electrically connected wave The output end V+ of fractal transform circuit;The second end of second switch Q2 and the second end of the 4th switching tube Q4 are electrically connected rectification circuit Output end Vgnd.
In the present embodiment, switching tube uses but is not limited to the switching devices such as metal-oxide-semiconductor, IGBT pipe or triode.
Preferably, power supply device further includes supply voltage sampling unit 8, the output end of supply voltage sampling unit 8 and place The input terminal electrical connection of device 1 is managed, it is inverse that the voltage value for the power supply that processor 1 is obtained according to supply voltage sampling unit 8 adjusts high frequency The driving for becoming bridge 2, makes the input terminal of waveform convertion circuit 5 obtain more accurately input waveform, to improve power supply device output The precision of waveform.
It is further preferred that power supply device further includes pfc circuit 9 and voltage and current sample circuit 10, pfc circuit 9 it is defeated Enter end and output end be electrically connected the input terminal of power supply and high-frequency inversion bridge 2, the BUS current sample output end of pfc circuit 9 with Processor 1 is electrically connected, for collected current value to be transmitted to processor 1;The output end of voltage and current sample circuit 10 with The input terminal of processor 1 is electrically connected, and voltage and current sample circuit 10 is used to acquire the voltage and current of 4 output end of rectification circuit, And voltage and current sampled value is transmitted to processor 1;Processor 1 is defeated according to voltage and current sampled value adjustment high-frequency inversion bridge 2 Waveform out, further increases the precision of the input waveform of the input terminal of waveform convertion circuit, to further increase power supply device The precision of output waveform.
As a preferred embodiment of the present embodiment, power supply device further includes EMI circuit 11, the input of EMI circuit 11 End and output end are electrically connected the input terminal of power supply and pfc circuit 9, using EMI circuit 11 can reduce power supply and periphery its Interference of its electronic product to power supply device, while reducing interference of the power supply device to power grid.
As shown in Figure 1, power supply device further includes host computer 12, the output end of host computer 12 and the input terminal electricity of processor 1 Connection, host computer 12 are used for human-computer interaction, input parameter, the state modulator high frequency that processor 1 is inputted according to user to processor 1 Inverter bridge 2, waveform convertion circuit 5 export required waveform, and full automatic control improves efficiency and consistency, improve The quality of product.
Power supply device provided in this embodiment can obtain many output waveforms in the technology for keeping Switching Power Supply characteristic. Such as: the waveforms such as independent positive voltage, independent negative voltage, direct impulse wave, positive negative pulse stuffing wave and sine wave.
Lower mask body introduces the control process that power supply device obtains different wave.
As shown in figure 3, when user needs power supply device to export forward dc waveform, the output control signal of processor 1 leads to Crossing waveform convertion driving circuit 6 opens simultaneously second switch Q2 and third switching tube Q3 in waveform convertion circuit 5, waveform 5 output end V+ of translation circuit exports individual forward dc voltage to output end V-.
It should be noted that in the output waveform of waveform convertion circuit 5, soft starting time t1, direct current time t2, output Voltage V and output number of pulses can be arranged by host computer 12.
As shown in figure 4, when user needs power supply device to export negative sense DC waveform, the output control signal of processor 1 leads to Crossing waveform convertion driving circuit 6 opens simultaneously first switch tube Q1 and the 4th switching tube Q4 in waveform convertion circuit 5, waveform The output end V+ of translation circuit 5 exports individual negative DC voltage to output end V-.
It should be noted that in the output waveform of waveform convertion circuit 5, soft starting time t1, direct current time t2, output Voltage V- and output number of pulses n can be arranged by host computer 12.
As shown in figure 5, when user needs power supply device to export forward pulse direct current corrugating, the output control of processor 1 Signal processed makes second switch Q2 in waveform convertion circuit 5 and third switching tube Q3 simultaneously by waveform convertion driving circuit 6 It opens, after satisfaction needs the time t1 of output voltage, closes second switch Q2 and third switching tube Q3, work as second switch After the shut-in time of Q2 and third switching tube Q3 reach t2, it is again turned on second switch Q2 and third switching tube Q3, under output One pulse.The output end V+ of waveform convertion circuit 5 exports individual forward pulse direct current pressure to output end V-, wherein Burst length t1, turn-off time t2 and output voltage V in the output waveform of waveform convertion circuit 5 can be set by host computer 12 It sets.
As shown in fig. 6, when user needs power supply device to export negative-going pulse waveform, the output control signal of processor 1 leads to Crossing waveform convertion driving circuit 6 opens simultaneously first switch tube Q1 and the 4th switching tube Q4 in waveform convertion circuit 5, full After foot needs the time t1 of output voltage, first switch tube Q1 and the 4th switching tube Q4 is closed;After reaching t2 between upon closing, then Secondary opening first switch tube Q1 and the 4th switching tube Q4 exports next pulse.The output end V+ of waveform convertion circuit 5 is to output V- is held to export individual negative-going pulse DC voltage, wherein burst length t1, turn-off time t2 and output voltage V can pass through Host computer 12 is arranged.
As shown in fig. 7, being the direct current that direct impulse and negative-going pulse combine when user needs power supply device output waveform When pressure, the output control signal of processor 1 makes the second switch Q2 in waveform convertion circuit 5 by waveform convertion driving circuit 6 It is opened simultaneously with third switching tube Q3, after the time of output voltage reaches t1, closes second switch Q2 and third switching tube Q3;After reaching t2 between upon closing, it is again turned on second switch Q2 and third switching tube Q3, output is positive in the above manner Pulse, when preparing to export negative-going pulse, opens simultaneously first and opens after direct impulse output number reaches preset n Pipe Q1 and the 4th switching tube Q4 is closed, after the time of output voltage reaching t3, closes first switch tube Q1 and the 4th switching tube Q4; After reaching t4 between upon closing, first switch tube Q1 and the 4th switching tube Q4 are opened simultaneously again;So circulation, it is negative until exporting Output is closed when reaching preset value n to impulse waveform quantity.The output end V+ of waveform convertion circuit 5 exports output end V- positive The DC voltage of pulse and negative-going pulse combination.The above first switch tube Q1 and the 4th switching tube Q4 is to open simultaneously or close It closes, second switch Q2 and third switching tube Q3 are to open simultaneously or close, and two groups of switching tubes cannot open simultaneously.
As shown in figure 8, processor 1 controls high-frequency inversion part when user needs power supply device to export sinusoidal waveform PWM constantly generates sine wave top half waveform between Vo1 and Vgnd, while within the upper half week of input sine wave, The output control signal of processor 1 makes second switch Q2 in waveform convertion circuit 5 and the by waveform convertion driving circuit 6 Three switching tube Q3 are opened simultaneously, and output end V+ is the sine wave in upper half period to output end V- at this time.In the negative of input sine wave In half week, the output control signal of processor 1 makes second in waveform convertion circuit 5 to open by waveform convertion driving circuit 6 It closes pipe Q2 and third switching tube Q3 to close, opens simultaneously the 4th switching tube Q4 and first switch tube Q1, output end V+ is to output end V- is negative sense sine wave.Pass through the anti-of second switch Q2, third switching tube Q3 and the 4th switching tube Q4 and first switch tube Q1 Strike-on is open and close, and stable, continuous sine wave is finally formed between output end V+ and output end V-.
Embodiment 2
The present embodiment provides another power supply devices.As shown in figure 9, power supply device include processor 1, high-frequency inversion bridge 2, High frequency transformer 3, rectification circuit 4, waveform convertion circuit 5 and waveform convertion driving circuit 6, pfc circuit 9, voltage and current sampling The control terminal of circuit 10 and EMI circuit 11, high-frequency inversion bridge 2 is connect by high-frequency inversion driving circuit 7 with 1 signal of processor, EMI circuit 11, pfc circuit 9, high-frequency inversion bridge 2, high frequency transformer 3, rectification circuit 4 and waveform convertion circuit 5 are successively electrically connected It connects.Wherein, in addition to waveform convertion circuit 5, EMI circuit 11, pfc circuit 9, high-frequency inversion bridge 2, high frequency transformer 3 and rectified current Road 4 it is structurally and functionally identical in embodiment 1, details are not described herein.
In the present embodiment, waveform convertion circuit 5 include a switching tube Q, the control terminal of switching tube Q be electrically connected welding wave change Change the output end of driving circuit 6, the output end vo 1 of the first end electrical connection rectification circuit 4 of switching tube Q, the second end of switching tube Q It is electrically connected the output end V+ of waveform convertion circuit 5, output end of the output end Vgnd of rectification circuit 4 as waveform convertion circuit 5 V-。
The present embodiment is introduced by taking triode as an example, it is not intended that the present embodiment cannot be managed using metal-oxide-semiconductor, IGBT Etc. other switching devices.
The output end of the base stage electrical connection waveform convertion driving circuit 6 of switching tube Q, the collector electrical connection of switching tube Q are whole The output end vo 1 of current circuit 4, switching tube Q emitter electrical connection waveform convertion circuit 5 output end V+, rectification circuit 4 it is defeated Output end V- of the outlet Vgnd as waveform convertion circuit 5.
The waveform convertion circuit 5 of the present embodiment is identical as the working principle of Waveform switch translation circuit 5 in embodiment 1, It is the switching tube Q on and off made in waveform driver circuit 5 by the control waveform convertion driving circuit 6 of processor 1, thus Different output waveforms is obtained, therefore details are not described herein.
Power supply device provided in this embodiment controls high-frequency inversion bridge by processor, and high-frequency inversion bridge is electric by adjustment input The waveform in source, after rectified circuit rectifies, then waveform needed for being exported by waveform convertion circuit transformations, and waveform convertion circuit is It is driven by processor by waveform convertion driving circuit, the waveform of waveform convertion circuit output can be accurately controlled in millisecond Grade, and part pulsewidth modulation (PWM) of processor control high-frequency inversion bridge, obtain sinusoidal in the input terminal of waveform convertion circuit The positive half-wave of wave or square wave can obtain independent forward voltage, independent negative voltage, forward direction after waveform convertion circuit transformations Impulse waveform, negative-going pulse waveform, positive negative sense assembled pulse waveform, sine wave top half, sine wave lower half portion or Complete sine wave, and the duration of waveform can be adjusted, i.e., become by processor, high-frequency inversion bridge, rectification circuit and waveform The mutual cooperation for changing circuit obtains accurately different types of voltage and current waveform, to meet different application scenarios, expands The big application surface of power supply device, user need to only buy a power supply device, can either meet such as airport and flash to LED Frequency, duration, lamp brightness, the strict demand of luminous intensity, and it is able to satisfy requirement of the plating occasion to positive negative sense voltage waveform.Separately Outside, which is not only able to satisfy the application scenarios of low-power, but can by high frequency transformer by the input of power supply device and Output isolation realizes the high-power output of 20kW or more so that power supply device be made to meet 2000Vac or the test of more high voltage.This Outside, which controls waveform duration, frequency and waveform quantity by processor, avoids deviation caused by Human disturbance, The performance and quality of product are improved, while improving the quality and positioning of consumer product.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.

Claims (9)

1. a kind of power supply device, which is characterized in that the power supply device includes processor, high-frequency inversion bridge, high frequency transformer, whole The control terminal of current circuit, waveform convertion circuit and waveform convertion driving circuit, the high-frequency inversion bridge is driven by high-frequency inversion Circuit is connect with the processor signal, and the high-frequency inversion bridge, high frequency transformer, rectification circuit and waveform convertion circuit are successively Electrical connection;
The high-frequency inversion bridge is used to adjust the input waveform of power supply, converts waves AC for direct current wave;
The high frequency transformer is used for the input terminal and output end of isolated power supply, and energy is transmitted to secondary side from primary side;
The rectification circuit is used to adjust the waveform of input voltage;
The input terminal and output end of the waveform convertion driving circuit respectively with the processor and the waveform convertion circuit Control terminal electrical connection, the waveform convertion driving circuit is for driving the waveform convertion circuit;
The waveform convertion circuit is used to that input waveform to be transformed to institute according to the driving signal of the waveform convertion driving circuit The output waveform needed.
2. power supply device according to claim 1, which is characterized in that the waveform convertion circuit includes four switching tubes, The control terminal of four switching tubes is electrically connected with the output end of waveform convertion driving circuit, first switch tube Q1 and third switching tube Q3 First end be electrically connected the output end vo 1 of the rectification circuit, the of the second end of first switch tube Q1 and second switch Q2 One end is electrically connected the output end V- of the waveform convertion circuit, and the first of the second end of third switching tube Q3 and the 4th switching tube Q4 End is electrically connected the output end V+ of the waveform convertion circuit;The second end of the second end of second switch Q2 and the 4th switching tube Q4 It is electrically connected the output end Vgnd of the rectification circuit.
3. power supply device according to claim 1, which is characterized in that the waveform convertion circuit includes a switching tube, The control terminal of the switching tube is electrically connected the output end of the waveform convertion driving circuit, the first end electrical connection of the switching tube The output end vo 1 of the rectification circuit, the second end of the switching tube is electrically connected the output end V+ of the waveform convertion circuit, whole Output end V- of the output end Vgnd of current circuit as the waveform convertion circuit.
4. power supply device according to claim 2 or 3, which is characterized in that the switching tube is metal-oxide-semiconductor, IGBT pipe or three Pole pipe.
5. power supply device according to claim 1, which is characterized in that the power supply device further includes that supply voltage sampling is single The output end of member, the supply voltage sampling unit is electrically connected with the input terminal of the processor, and the processor is according to The voltage value for the power supply that supply voltage sampling unit obtains adjusts the driving of the high-frequency inversion bridge.
6. power supply device according to claim 5, which is characterized in that the power supply device further includes pfc circuit and voltage Current sampling circuit, the input terminal and output end of pfc circuit are electrically connected the input terminal of power supply and the high-frequency inversion bridge, The signal output end of pfc circuit is electrically connected the processor;The output end and the processor of the voltage and current sample circuit Input terminal electrical connection, the voltage and current sample circuit is used to acquire the voltage and current of rectification circuit output end, and will be electric Current voltage sampled value is transmitted to the processor;The processor adjusts the high-frequency inversion according to the voltage and current sampled value The output of bridge.
7. power supply device according to claim 6, which is characterized in that the power supply device further includes EMI circuit, described The input terminal and output end of EMI circuit are electrically connected the input terminal of power supply and the pfc circuit, and the EMI is for reducing electricity Magnetic disturbance.
8. power supply device according to claim 1, which is characterized in that the power supply device further includes host computer, it is described on The output end of position machine is electrically connected with the input terminal of the processor, and the host computer is used for human-computer interaction, defeated to the processor Enter parameter.
9. power supply device according to claim 1, which is characterized in that the input power is alternating current or the power electric of 380V Source.
CN201811231469.0A 2018-10-22 2018-10-22 A kind of power supply device Pending CN109378983A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07322634A (en) * 1994-05-30 1995-12-08 Sharp Corp Control method of inverter and inverter device
CN201663561U (en) * 2010-01-22 2010-12-01 广州电器科学研究院 Non-isolation high-power arbitrary pulse power supply
CN206041844U (en) * 2016-09-30 2017-03-22 广东顺德三扬科技股份有限公司 High -frequency rectifier circuit
CN207021912U (en) * 2017-07-20 2018-02-16 西安科技大学 Multiple-channel output random waveform voltage source system
CN108336815A (en) * 2018-04-27 2018-07-27 精进电动科技股份有限公司 For electric installation and automobile controller stand-by power supply
CN209250493U (en) * 2018-10-22 2019-08-13 金华诚科技(深圳)有限公司 A kind of switching power unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07322634A (en) * 1994-05-30 1995-12-08 Sharp Corp Control method of inverter and inverter device
CN201663561U (en) * 2010-01-22 2010-12-01 广州电器科学研究院 Non-isolation high-power arbitrary pulse power supply
CN206041844U (en) * 2016-09-30 2017-03-22 广东顺德三扬科技股份有限公司 High -frequency rectifier circuit
CN207021912U (en) * 2017-07-20 2018-02-16 西安科技大学 Multiple-channel output random waveform voltage source system
CN108336815A (en) * 2018-04-27 2018-07-27 精进电动科技股份有限公司 For electric installation and automobile controller stand-by power supply
CN209250493U (en) * 2018-10-22 2019-08-13 金华诚科技(深圳)有限公司 A kind of switching power unit

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