CN107040137B - A kind of control device, Vehicular charger and automobile enhancing main circuit - Google Patents

A kind of control device, Vehicular charger and automobile enhancing main circuit Download PDF

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Publication number
CN107040137B
CN107040137B CN201710304528.1A CN201710304528A CN107040137B CN 107040137 B CN107040137 B CN 107040137B CN 201710304528 A CN201710304528 A CN 201710304528A CN 107040137 B CN107040137 B CN 107040137B
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circuit
nand gate
connect
input terminal
signal
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CN107040137A (en
Inventor
李小祥
白健
王雷
陈超
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02J2007/10—
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

The present invention provides a kind of control device, Vehicular charger and automobile for enhancing main circuit, wherein control device includes: enhancing main circuit, comparison circuit and logic control circuit；Enhancing main circuit includes rectifier bridge, current sampling circuit and switching tube, and sample circuit and switching tube are serially connected between two output ends of rectifier bridge；The first input end of comparison circuit is connect with current sampling circuit, and the second input terminal of comparison circuit inputs the reference signal of a sinusoidal waveform；The output end of comparison circuit and an input terminal of logic control circuit connect, and the output end of logic control circuit is connect with switching tube；The reference signal of the second input terminal input for the current sampling signal and comparison circuit that comparison circuit is inputted according to the first input end of comparison circuit, generate corresponding first output signal, and it exports to logic control circuit, logic control circuit generates corresponding driving signal, the shutdown of control switch pipe or conducting according to the first output signal.

Description

A kind of control device, Vehicular charger and automobile enhancing main circuit
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of control device for enhancing main circuit, Vehicular charger and Automobile.
Background technique
As the technology development of electric car and the raising of people 's material life, electric car are gradually popularized.Electronic In automobile charging process, higher hamonic wave rich in current waveform will cause harmonic pollution to power grid.Therefore, for electricity The requirement of PFC in electrical automobile charging process is more more and more urgent.
Currently, usually being tied by the topology that BOOST circuit is PFC in the Vehicular charger of electric car Structure.In the prior art, Power Factor Correction Control generallys use DSP (Digital Signal Processing, English: Digital Signal Processing) or analog IC (integrated circuit, Integrated Circuit) is used as control device, circuit structure is complicated, Design cost is high.
As described above, in the prior art, the controling circuit structure of BOOST circuit is complicated, cost of manufacture is high and control method It is complicated.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control device, Vehicular charger and vapour for enhancing main circuit Vehicle, controling circuit structure to solve BOOST circuit in the prior art is complicated, cost of manufacture is high and control method is complicated asks Topic.
In a first aspect, the embodiment of the present invention provides a kind of control device for enhancing main circuit, comprising: enhancing main circuit, ratio Compared with circuit and logic control circuit；
The enhancing main circuit includes rectifier bridge, current sampling circuit and switching tube, the sample circuit and described is opened Pipe is closed to be serially connected between two output ends of the rectifier bridge；
The first input end of the comparison circuit is connect with the current sampling circuit, the second input of the comparison circuit The reference signal of one sinusoidal waveform of end input；
The output end of the comparison circuit is connect with the first input end of the logic control circuit, the logic control electricity The output end on road is connect with the switching tube；
The current sampling signal and the comparison that the comparison circuit is inputted according to the first input end of the comparison circuit The reference signal of the second input terminal input of circuit, generates corresponding first output signal, and exports to the logic control electricity Road, the logic control circuit generate corresponding driving signal according to first output signal, control the switching tube shutdown Or conducting.
Wherein, in the control device of above-mentioned enhancing main circuit, the comparison circuit include: first comparator and first with NOT gate；
The non-inverting input terminal of the first comparator is connect with the current sampling circuit, the reverse phase of the first comparator Input terminal inputs the reference signal, and the output end of the first comparator connects with two input terminals of first NAND gate respectively It connects, the output end of first NAND gate is connect with the first input end of the logic control circuit；
The current sampling signal and the comparison that the comparison circuit inputs the first input end of the comparison circuit are electric The reference signal of the second input terminal input on road is compared, and is greater than or equal to the reference in the value of the current sampling signal When the value of signal, corresponding first output signal is generated.
Wherein, the control device of above-mentioned enhancing main circuit a, further includes: precise rectification circuit is used for alternating current repoussage Stream forms the reference signal of sinusoidal waveform；
The first end of the precise rectification circuit is connect with grid interface, the second end of the precise rectification circuit with it is described The inverting input terminal of first comparator connects.
Wherein, in the control device for enhancing main circuit, the logic control circuit include: the second NAND gate, third with it is non- Door and photo-coupler；
Two input terminals of second NAND gate are connect with the output end of the comparison circuit respectively, second NAND gate Output end connect with the first input end of the third NAND gate, the output end of the third NAND gate and the photo-coupler Primary side connection, the secondary side of the photo-coupler is connect with the switching tube；
Second NAND gate and the third NAND gate generate corresponding second according to first output signal and export Signal, and exported by the output end of the third NAND gate to the primary side of the photo-coupler, the photo-coupler generation pair The driving signal answered, the driving signal are exported by the secondary side of the photo-coupler to the switching tube, and the switch is controlled Pipe shutdown or conducting.
Wherein, in the control device of above-mentioned enhancing main circuit, the logic control circuit further include: the 4th NAND gate and 5th NAND gate；
The first input end of 4th NAND gate connects a timer, the output end of the 4th NAND gate and described the The first input end of five NAND gates connects, and the second input terminal of the 5th NAND gate and the output end of the third NAND gate connect It connects, the output end of the 5th NAND gate is connect with the second input terminal of the third NAND gate.
Wherein, the control device of above-mentioned enhancing main circuit, further includes: over-voltage detection circuit；
The first input end of the over-voltage detection circuit inputs a preset reference voltage, and the of the over-voltage detection circuit Two input terminals with it is described enhancing main circuit voltage output end connect, the output end of the over-voltage detection circuit with the described 4th and Second input terminal of NOT gate connects；
The over-voltage detection circuit is inputted according to the second input terminal of the reference voltage and the over-voltage detection circuit The enhancing main circuit output voltage, generate corresponding over-voltage signal, and pass through the output end of the over-voltage detection circuit It exports to the second input terminal of the 4th NAND gate, the logic control circuit generates corresponding drive according to the over-voltage signal Dynamic signal controls the switching tube shutdown or conducting.
Wherein, in the control device of above-mentioned enhancing main circuit, the over-voltage detection circuit includes: bleeder circuit and second Comparator；
The first end of the bleeder circuit is connect with the voltage output end of the enhancing main circuit, and the of the bleeder circuit Two ends are connect with the inverting input terminal of second comparator, and the non-inverting input terminal of second comparator inputs the benchmark electricity Pressure, the output end of second comparator are connect with the second input terminal of the 4th NAND gate.
Wherein, in the control device of above-mentioned enhancing main circuit, the over-voltage detection circuit further include: power supply, first resistor, Second resistance and zener diode；
The first end of the first resistor is connect with the power supply, and the of the second end of the first resistor and second resistance One end connection, and connect with the cathode of the zener diode, the second end of the second resistance and second comparator Non-inverting input terminal connection, the plus earth of the zener diode.
Second aspect, the embodiment of the present invention provide a kind of Vehicular charger, the control including enhancing main circuit as described above Device processed.
The third aspect, the embodiment of the present invention provide a kind of automobile, including Vehicular charger as described above.
In the embodiment of the present invention, by comparing the logic control of circuit and logic control circuit, current sampling signal is with just The reference signal of string waveform makes the electric current for enhancing main circuit in sinusoidal waveform as benchmark, while guaranteeing to enhance the electricity of main circuit Voltage in phase is flowed, PFC is realized, can be effectively reduced the harmonic pollution in power grid.Also, the enhancing main circuit Control device structure is simple, easy to accomplish and low manufacture cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 shows the structural schematic diagrams of the control device of enhancing main circuit provided in an embodiment of the present invention；
Fig. 2 indicates the circuit diagram of the comparison circuit of the control device of enhancing main circuit provided in an embodiment of the present invention；
Fig. 3 indicates the circuit theory of the precise rectification circuit of the control device of enhancing main circuit provided in an embodiment of the present invention Figure；
Fig. 4 indicates the circuit theory of the logic control circuit of the control device of enhancing main circuit provided in an embodiment of the present invention Figure；
Fig. 5 indicates the circuit theory of the over-voltage detection circuit of the control device of enhancing main circuit provided in an embodiment of the present invention Figure；
Fig. 6 indicates the circuit theory of the enhancing main circuit of the control device of enhancing main circuit provided in an embodiment of the present invention Figure.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.
Referring to Figure 1, the structural representation of the control device of enhancing main circuit provided in an embodiment of the present invention is shown Figure.
The embodiment of the present invention provides a kind of control device for enhancing main circuit, may include: enhancing main circuit 10, more electric Road 20 and logic control circuit 30.
Wherein, the enhancing main circuit 10 includes rectifier bridge 11, current sampling circuit 12 and switching tube 13, the electric current Sample circuit 12 and the switching tube 13 are serially connected between two output ends of the rectifier bridge 11；Here, the enhancing main circuit 10 That is BOOST circuit, 12 sample detecting of current sampling circuit enhance the principal current (inductive current) of main circuit 10, obtain an electric current Sampled signal iL.
The first input end of the comparison circuit 20 is connect with the current sampling circuit 12, and the of the comparison circuit 20 Two input terminals input the reference signal Vref of a sinusoidal waveform；In this way, first input of the comparison circuit 20 by comparing circuit 20 End receives the current sampling signal iL that current sampling circuit 12 exports, while one reference of the second input terminal input of comparison circuit 20 Signal Vref, the benchmark as current sampling signal iL.
The output end of the comparison circuit 20 is connect with the first input end of the logic control circuit 30, the logic control The output end of circuit 30 processed is connect with the switching tube 13；Here, the switching tube 13 for enhancing main circuit 10 passes through the logic control 30 drive control of circuit realizes the shutdown or conducting of switching tube 13.
The current sampling signal iL and institute that the comparison circuit 20 is inputted according to the first input end of the comparison circuit 20 The reference signal Vref for stating the second input terminal input of comparison circuit 20, generates corresponding first output signal COUT, and export To the logic control circuit 30, the logic control circuit 30 generates corresponding driving signal according to first output signal Drive controls the shutdown of switching tube 13 or conducting.
In the embodiment of the present invention, by the way that current sampling signal iL and the reference signal Vref of a sinusoidal waveform are inputted respectively To comparison circuit 20, comparison circuit 20 generates corresponding first output letter according to current sampling signal iL and reference signal Vref Number COUT is exported to logic control circuit 30, and logic control circuit 30 is made to generate driving signal Drive, control enhancing main circuit Switching tube shutdown or conducting.In this way, the logic control through comparison circuit 20 and logic control circuit 30, enhances the master of main circuit 10 Electric current realizes current value variation according to switching off and on for switching tube 13, and current sampling signal iL can be made with reference signal Vref On the basis of, make the principal current for enhancing main circuit 10 in sinusoidal waveform, while can guarantee that the Current Voltage for enhancing main circuit 10 is same Phase realizes PFC, can be effectively reduced the harmonic pollution in power grid.
In the embodiment of the present invention, the control device structure for enhancing main circuit is simply and readily realized, and low manufacture cost.
Fig. 2 is referred to, shows the comparison circuit of the control device of enhancing main circuit provided in an embodiment of the present invention Circuit diagram.
Wherein, in some embodiments, in the control device of above-mentioned enhancing main circuit, the comparison circuit 20 includes: One comparator 21 and the first NAND gate 22.
The non-inverting input terminal of the first comparator 21 is connect with the current sampling circuit 12, the first comparator 21 Inverting input terminal input the reference signal Vref, the output end of the first comparator 21 respectively with first NAND gate The first input end of 22 two input terminals connection, the output end of first NAND gate 22 and the logic control circuit 30 connects It connects；
Current sampling signal iL that the comparison circuit 20 inputs the first input end of the comparison circuit 20 and described The reference signal Vref of the second input terminal input of comparison circuit 20 is compared, and is greater than in the value of the current sampling signal iL Or when value equal to the reference signal Vref, corresponding first output signal COUT is generated.
In above-described embodiment, the non-inverting input terminal of the first comparator 21 (in this embodiment, as comparison circuit 20 First input end) input current sampled signal iL, (i.e. comparison circuit 20 is second defeated for the inverting input terminal of the first comparator 21 Enter end) the reference signal Vref of input sine wave shape, first comparator 21 compares current sampling signal iL and reference signal Vref, And the logic judgment of the first NAND gate 22 is combined, corresponding first output signal COUT is generated, and pass through the defeated of the first NAND gate Outlet (i.e. the output end of comparison circuit 20) is exported to the first input end of logic control circuit 30.When opening for enhancing main circuit 10 When closing the conducting of pipe 13, the principal current of enhancing main circuit 10 rises, and current sampling signal iL rises, when the value of current sampling signal iL When rising to and (be greater than or equal to) value of reference signal Vref, comparison circuit 20 generates low level first output signal COUT, At this point, logic control circuit 30 generates corresponding driving signal Drive according to the low level first output signal COUT, control The switching tube 13 is made to turn off.
Fig. 3 is referred to, shows the precision rectifying of the control device of enhancing main circuit provided in an embodiment of the present invention The circuit diagram of circuit.
In some embodiments, the control device of above-mentioned enhancing main circuit can also include: a precise rectification circuit 40, For ac voltage rectifier to be formed to the reference signal Vref of sinusoidal waveform.
Wherein, the first end of the precise rectification circuit 40 is connect with grid interface, and the of the precise rectification circuit 40 Two ends are connect with the inverting input terminal of the first comparator 21.
In the embodiment, alternating voltage inputs precision rectifying electricity by the first end of grid interface and precise rectification circuit 40 Then road 40 carries out shaping conversion by the precise rectification circuit 40, forms the reference signal Vref of sinusoidal waveform.
Specifically, in one example, which includes transformer 41, divides voltage regulator circuit, rectification circuit, The input terminal of the transformer 41 is connect with grid interface, this divides voltage regulator circuit and the output end of transformer 41 to connect, the rectification The input terminal of circuit and the partial pressure adjust circuit connection, and the output end of rectification circuit and the inverting input terminal of first comparator 21 connect It connects.
Wherein, this divides voltage regulator circuit to include the 8th resistance R8 and the 9th resistance R9；The first end of 8th resistance R8 with First output end of transformer 41 connects, and the second end of the 8th resistance R8 is connect with the first end of the 9th resistance R9, and with rectification The input terminal of circuit connects, and the second output terminal of the second end of the 9th resistance R9 and transformer is altogether.
The rectification circuit include third comparator 42, the 4th comparator 43, first diode D1, the second diode D2 and Twelfth resistor R12；The non-inverting input terminal of the third comparator 42 is grounded, the inverting input terminal of third comparator 42 and the partial pressure Circuit connection is adjusted, specifically, the inverting input terminal of the third comparator 42 is connect with the second end of the 8th resistance R8；One or two The anode of pole pipe D1 is connect with the inverting input terminal of third comparator 42, cathode and the third comparator 42 of first diode D1 Output end connection；The anode of second diode D2 is connect with the output end of third comparator 42, and the yin with the second diode D2 Pole connection, the cathode of the second diode D2 are connect with the non-inverting input terminal of the 4th comparator 43；The reverse phase of 4th comparator 43 is defeated Enter end to connect with the output end of the 4th comparator 43, and defeated with the reverse phase of third comparator 42 respectively by twelfth resistor R12 Enter end and the anode connection of first diode D1.
In addition, the rectification circuit further includes the tenth resistance R10 and eleventh resistor R11；The first end of tenth resistance R10 Circuit connection is adjusted with partial pressure, specifically, the first end of the tenth resistance R10 is connect with the second end of the 8th resistance R8, the tenth electricity The second end of resistance R10 is connect with the cathode of the second diode D2, and is connect with the non-inverting input terminal of the 4th comparator 43；11st The first end of resistance R11 is connect with voltage regulator circuit and the first end of the tenth resistance R10 is divided respectively, wherein eleventh resistor The first end of R11 divides the second end of the 8th resistance R8 of voltage regulator circuit to connect with this, the second end difference of eleventh resistor R11 It is connect with the anode of the inverting input terminal of third comparator 42 and first diode D1, and first with twelfth resistor R12 End connection.In addition, the rectification circuit further includes the first capacitor C1 for filter high-frequency, first capacitor C1 and first diode D1 is in parallel.
The precise rectification circuit further includes a current-limiting protection circuit, which includes thirteenth resistor R13, is used In carry out current-limiting protection, the first end of thirteenth resistor R13 respectively with the output end of the 4th comparator 43, inverting input terminal with And the second end connection of twelfth resistor R12, the second end of thirteenth resistor R13 and the inverting input terminal of first comparator 21 connect It connects.
In one example, precise rectification circuit 40 accesses the 220V AC voltage that peak value is 311V, is converted by transformer For the alternating voltage of 15V, and by rectification circuit alternating voltage is converted to the half-sinusoid of peak value 1V, obtains reference signal Vref。
In the embodiment of the present invention, current reference value (reference signal) can be adjusted by precise rectification circuit 40 and increased Or reduce the output power of enhancing main circuit 10.
Fig. 4 is referred to, shows the logic control of the control device of enhancing main circuit provided in an embodiment of the present invention The circuit diagram of circuit.
Wherein, in some embodiments, in the control device for enhancing main circuit, the logic control circuit 30 includes: Two NAND gates 31, third NAND gate 32 and photo-coupler 33.
Wherein, two input terminals of second NAND gate 31 are connect with the output end of the comparison circuit 20 respectively, described The output end of second NAND gate 31 is connect with the first input end of the third NAND gate 32, the output of the third NAND gate 32 End is connect with the primary side of the photo-coupler 33, and the secondary side of the photo-coupler 33 is connect with the switching tube 13；
Second NAND gate 31 and the third NAND gate 32 generate corresponding according to the first output signal COUT Second output signalAnd exported by the output end of the third NAND gate 32 to the primary side of the photo-coupler 33, it is described Photo-coupler 33 generates corresponding driving signal Drive, and the driving signal Drive is defeated by the secondary side of the photo-coupler 33 Out to the switching tube 13, the shutdown of switching tube 13 or conducting are controlled.
In the embodiment, two input terminals of the second NAND gate 31 are the first input end of logic control circuit.Here, lead to It crosses the second NAND gate 31 and third NAND gate 32 and logic judgment is carried out to the first output signal COUT, generate corresponding second output SignalSo that photo-coupler 33 generates corresponding driving signal Drive, and the shutdown of output control switch pipe 13 or conducting.Its In, when the first output signal COUT is low level, the logic judgment through the second NAND gate 31 and third NAND gate 32 is generated low Second output signal of levelPhoto-coupler 33 is according to low level second output signalGenerate corresponding driving signal Drive, control switch pipe 13 turn off；When the first output signal COUT is high level, through the second NAND gate 31 and third with it is non- The logic judgment of door 32, generates the second output signal of high levelPhoto-coupler 33 is according to the second output signal of high levelCorresponding driving signal Drive is generated, control switch pipe 13 is connected.
In addition, the signal code that exports by third NAND gate 32 of photo-coupler 33 for relay protective scheme control circuit 30 is excessive Lead to device failure, a current-limiting circuit, institute are connected between the output end of third NAND gate 32 and the primary side of photo-coupler 33 Stating current-limiting circuit includes the 7th resistance R7, plays current-limiting protection to logic control circuit 30.
Wherein, in one example, the model TLP250 of the photo-coupler 33.Certainly, which can also be The photo-coupler of other models, as long as its drive control that can be realized switch tube 13, here with no restriction.
In addition, in one embodiment, in the control device of above-mentioned enhancing main circuit, the logic control circuit 30 can be with It include: the 4th NAND gate 34 and the 5th NAND gate 35.
The first input end of 4th NAND gate 34 connects a timer, the output end of the 4th NAND gate 34 and institute State the first input end connection of the 5th NAND gate 35, the second input terminal of the 5th NAND gate 35 and the third NAND gate 32 Output end connection, the output end of the 5th NAND gate 35 connect with the second input terminal of the third NAND gate 32.
In the embodiment, when switching tube 13 turns off, the off state of 30 latch switch pipe 13 of logic control circuit, so Afterwards, it is triggered by the timer being connect with the first input end of the 4th NAND gate 34 in the signal rising edge of following clock cycle, Make the output end of third NAND gate 32 to the second output signal of the primary side of photo-coupler 33 output high levelMake optical coupling The driving signal Drive of the secondary side output high level of device 33, control switch pipe 13 are connected, and complete a cycle.
In the embodiment of the present invention, by comparing circuit 20 and logic control circuit 30, peak point current can be completed and followed just The reference signal of string waveform realizes the PFC of peak-mode.
Fig. 5 is referred to, shows the over-voltage detection of the control device of enhancing main circuit provided in an embodiment of the present invention The circuit diagram of circuit.
In some embodiments, the control device of above-mentioned enhancing main circuit can also include: over-voltage detection circuit 50, should Over-voltage detection circuit 50 is for stablizing the output voltage of enhancing main circuit 10.
The first input end of the over-voltage detection circuit 50 inputs a preset reference voltage, the over-voltage detection circuit 50 The second input terminal with it is described enhancing main circuit 10 voltage output end connect, the output end of the over-voltage detection circuit 50 and institute State the second input terminal connection of the 4th NAND gate 34；
The over-voltage detection circuit 50 is according to the reference voltage and the second input terminal of the over-voltage detection circuit 50 The output voltage Vo of the enhancing main circuit 10 of input generates corresponding over-voltage signal OV, and detects electricity by the over-voltage The output end on road 50 is exported to the second input terminal of the 4th NAND gate 34, and the logic control circuit 30 is according to the over-voltage Signal OV generates corresponding driving signal Drive, controls the shutdown of switching tube 13 or conducting.
Wherein, in one embodiment, in the control device of above-mentioned enhancing main circuit, the over-voltage detection circuit 50 includes: Bleeder circuit 51 and the second comparator 52.
The first end of the bleeder circuit 51 is connect with the voltage output end of the enhancing main circuit 10, the bleeder circuit 51 second end is connect with the inverting input terminal of second comparator 52, the non-inverting input terminal input of second comparator 52 The reference voltage, the output end of second comparator 52 are connect with the second input terminal of the 4th NAND gate 34.
In the embodiment, bleeder circuit 51 divides the output voltage Vo for enhancing main circuit 10, is then input to the The inverting input terminal of two comparators, output voltage Vo and reference voltage are compared by the second comparator 52, in the output voltage When the value of Vo is greater than the value of reference voltage, corresponding over-voltage signal OV (over-voltage signal OV is set low at this time) is generated, and pass through second The output end of comparator 52 is exported to the second input terminal of the 4th NAND gate 34, and logic control circuit 30 is according to over-voltage signal OV Corresponding driving signal Drive is generated, the switching tube 13 is controlled and turns off；It is less than or equal to benchmark in the value of output voltage Vo When the value of voltage, corresponding over-voltage signal OV (over-voltage signal OV sets height at this time) is generated, and export to logic control circuit 30, patrolled It collects control circuit 30 and corresponding driving signal Drive is generated according to the over-voltage signal OV, control the switching tube 13 and be connected.
Wherein, bleeder circuit 51 includes 3rd resistor R3 and the 4th resistance R4；The first end of 3rd resistor R3 is grounded, the The second end of three resistance R3 is connect with the first end of the 4th resistance R4, and is connect with the inverting input terminal of the second comparator 52, the The second end of four resistance R4 is connect with the voltage output end of enhancing main circuit 10.
In the embodiment of the present invention, it can guarantee that the output voltage Vo for enhancing main circuit 10 is steady by the over-voltage detection circuit 50 It is scheduled near reference voltage.
Wherein, in the control device of above-mentioned enhancing main circuit, the over-voltage detection circuit 50 further include: power supply VCC, first Resistance R1, second resistance R2 and zener diode Z1.
The first end of the first resistor R1 is connect with the power supply, the second end and second resistance of the first resistor R1 The first end of R2 connects, and connect with the cathode of the zener diode Z1, the second end of the second resistance R2 and described the The non-inverting input terminal of two comparators 52 connects, the plus earth of the zener diode Z1.In this way, passing through power supply VCC, the first electricity The circuit that R1, second resistance R2 and zener diode Z1 are constituted is hindered, reference voltage is generated.
In addition, the over-voltage detection circuit 50 further include: pull-up circuit, for enhancing the fan-out capability of over-voltage detection circuit, The pull-up circuit includes the 5th resistance R5, and the first end of the 5th resistance R5 connects 5V power supply, second end and the second comparator 52 Output end connection.In addition, over-voltage detection circuit 50 further includes the 6th resistance R6, the first end of the 6th resistance R6 is compared with second The non-inverting input terminal of device 52 connects, and the second end of the 6th resistance R6 is connect with the output end of the second comparator 52.
Fig. 6 is referred to, the enhancing main circuit of the control device of the enhancing main circuit provided in an embodiment of the present invention shown Circuit diagram.
In addition, in some embodiments, which can also include: inductance L, third diode D3, first Filter circuit 14 and the second filter circuit 17；Wherein, the first filter circuit 14 is connected between two output ends of rectifier bridge 11, For filtering to input current, which includes third capacitor C3 parallel with one another, the 4th capacitor C4 and the Two capacitor C2；Second filter circuit 17 is connected between the voltage output end of enhancing main circuit 10, for filtering the output current, Second filter circuit 17 includes the 6th capacitor C6, the 7th capacitor C7 and the 16th resistance R16 parallel with one another.
The enhancing main circuit 10 can also include: a buffer circuit 15, and the buffer circuit 15 is in parallel with switching tube 13, be used for Protective switch pipe 13 prevents switching tube 13 from leading to 13 corrupted of switching tube since the immediate current variation of closing or opening is excessive, should Buffer circuit 15 include the 4th diode D4, the 5th capacitor C5 and the 14th resistance R14, the anode of the 4th diode D4 with The first end of switching tube 13 connects, and the cathode of the 4th diode D4 is connect with the first end of the 5th capacitor C5, and with it is the 14th electric Hinder the second end connection of R14, the first end of the 14th resistance R14 respectively with the anode of the 4th diode D4 and third diode Anode connection, the second end of the 5th capacitor C5 are connect with the second end of switching tube 13.
The enhancing main circuit 10 can also include: stable gate voltage circuit 16, for stablizing the door of input switch pipe 13 Pole tension, the stable gate voltage circuit 16 include the 5th diode D5 and the 15th resistance R15, the 15th resistance R15's First end is connect with switching tube 13, and is connect with the cathode of the 5th diode D5, the second end and switching tube of the 15th resistance R15 13 second end connection, and connect with the anode of the 5th diode D5, the cathode and logic control circuit of the 5th diode D5 30 output end connection.
In addition, the enhancing main circuit 10 can also include: surge protection circuit 18, and for eliminating surge voltage, the surge Protecting circuit 18 includes the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 8th capacitor C8 and the 20th Resistance R20；It connects after 17th resistance R17 and the 8th capacitor C8 are in parallel with the 20th resistance R20；18th resistance R18 and It is in parallel with the 17th resistance R17 and the 8th capacitor C8 after 19 resistance R19 series connection, wherein the electricity of the 18th resistance R18 and the 19th Hinder the one end R19 altogether.20th resistance R20 is the resistance of NTC2.5.
In addition, current sampling circuit 12 includes sampling resistor R21, in one example, the sampling in the enhancing main circuit 10 The resistance value of resistance R21 is 0.1 Ω.
The control device of enhancing main circuit provided in an embodiment of the present invention, by comparing patrolling for circuit and logic control circuit Control is collected, for current sampling signal using the reference signal of sinusoidal waveform as benchmark, making the electric current for enhancing main circuit is in sinusoidal waveform, Guarantee the Current Voltage same-phase of enhancing main circuit simultaneously, realizes PFC, can be effectively reduced the harmonic wave in power grid Pollution.Also, the control device structure of the enhancing main circuit is simple, easy to accomplish and low manufacture cost.
In addition, the embodiment of the present invention provides a kind of Vehicular charger, the control including enhancing main circuit as described above is filled It sets.
In addition, the embodiment of the present invention provides a kind of automobile, including Vehicular charger as described above.
Vehicular charger and automobile provided in an embodiment of the present invention, by comparing the logic control of circuit and logic control circuit System, current sampling signal make the electric current for enhancing main circuit in sinusoidal waveform, simultaneously using the reference signal of sinusoidal waveform as benchmark Guarantee the Current Voltage same-phase of enhancing main circuit, realizes PFC, can be effectively reduced the harmonic pollution in power grid. Also, since the control device structure of enhancing main circuit is simple, easy to accomplish and low manufacture cost, it can reduce vehicle-mounted charge The cost of manufacture of machine and automobile.
It should be understood that in the description of specification, reference term " embodiment ", " one embodiment " or " some realities mentioned Apply example " mean that a particular feature, structure, or characteristic related with embodiment is included at least one embodiment of the present invention or shows In example.Therefore, " in one embodiment " that occurs everywhere in the whole instruction, " in one embodiment " or " in some implementations In example " not necessarily refer to identical embodiment.In addition, the element described in an attached drawing of the invention or a kind of embodiment, Structure or feature can be with element shown in one or more of the other attached drawing or embodiment, structure or features with any suitable Mode combines.
In addition, such as " include " or " contain " is enumerated for illustrating to exist in one or more embodiments herein Feature or component, but do not exclude the presence of one or more of the other feature enumerated or one or more of the other component.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In addition, relational terms such as first and second and the like are used merely to an entity in inventive embodiments Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation Any actual relationship or order.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (5)

1. a kind of control device for enhancing main circuit, which is characterized in that the enhancing main circuit includes rectifier bridge, current sample electricity Road and switching tube, the current sampling circuit and the switching tube are serially connected between two output ends of the rectifier bridge；Power grid The alternating voltage of interface inputs the rectifier bridge；
The control device for enhancing main circuit includes: comparison circuit and logic control circuit；
The first input end of the comparison circuit is connect with the current sampling circuit, and the second input terminal of the comparison circuit is defeated Enter the reference signal of a sinusoidal waveform；
The output end of the comparison circuit is connect with the first input end of the logic control circuit, the logic control circuit Output end is connect with the switching tube；
The current sampling signal and the comparison circuit that the comparison circuit is inputted according to the first input end of the comparison circuit The input of the second input terminal reference signal, generate corresponding first output signal, and export to the logic control circuit, institute It states logic control circuit and corresponding driving signal is generated according to first output signal, control the switching tube shutdown or lead It is logical；
The comparison circuit includes: first comparator and the first NAND gate；
The non-inverting input terminal of the first comparator is connect with the current sampling circuit, the anti-phase input of the first comparator End inputs the reference signal, and the output end of the first comparator is connect with two input terminals of first NAND gate respectively, The output end of first NAND gate is connect with the first input end of the logic control circuit；
Current sampling signal that the comparison circuit inputs the first input end of the comparison circuit and the comparison circuit The reference signal of second input terminal input is compared, and is greater than or equal to the reference signal in the value of the current sampling signal Value when, generate corresponding first output signal；
Enhance the control device of main circuit further include: a precise rectification circuit, for ac voltage rectifier to be formed sinusoidal waveform Reference signal；
The first end of the precise rectification circuit is connect with grid interface, the second end of the precise rectification circuit and described first The inverting input terminal of comparator connects；
Alternating voltage inputs the first end of precise rectification circuit by grid interface, carries out shaping by the precise rectification circuit and turns Change, forms the reference signal of sinusoidal waveform；
The logic control circuit includes: the second NAND gate, third NAND gate and photo-coupler；
Two input terminals of second NAND gate are connect with the output end of the comparison circuit respectively, second NAND gate it is defeated Outlet is connect with the first input end of the third NAND gate, the output end of the third NAND gate and the original of the photo-coupler Side connection, the secondary side of the photo-coupler is connect with the switching tube；
Second NAND gate and the third NAND gate generate corresponding second output signal according to first output signal, And exported by the output end of the third NAND gate to the primary side of the photo-coupler, the photo-coupler generates corresponding drive Dynamic signal, the driving signal are exported by the secondary side of the photo-coupler to the switching tube, and the switching tube shutdown is controlled Or conducting；
The logic control circuit further include: the 4th NAND gate and the 5th NAND gate；
The first input end of 4th NAND gate connects a timer, the output end of the 4th NAND gate with the described 5th with The first input end of NOT gate connects, and the second input terminal of the 5th NAND gate is connect with the output end of the third NAND gate, The output end of 5th NAND gate is connect with the second input terminal of the third NAND gate；
Enhance the control device of main circuit, further includes: over-voltage detection circuit；
The first input end of the over-voltage detection circuit inputs a preset reference voltage, and the second of the over-voltage detection circuit is defeated Enter end to connect with the voltage output end of the enhancing main circuit, the output end of the over-voltage detection circuit and the 4th NAND gate The second input terminal connection；
The institute that the over-voltage detection circuit is inputted according to the second input terminal of the reference voltage and the over-voltage detection circuit The output voltage for stating enhancing main circuit generates corresponding over-voltage signal, and is exported by the output end of the over-voltage detection circuit To the second input terminal of the 4th NAND gate, the logic control circuit, which generates corresponding driving according to the over-voltage signal, to be believed Number, control the switching tube shutdown or conducting.
2. the control device of enhancing main circuit according to claim 1, which is characterized in that the over-voltage detection circuit packet It includes: bleeder circuit and the second comparator；
The first end of the bleeder circuit is connect with the voltage output end of the enhancing main circuit, the second end of the bleeder circuit It being connect with the inverting input terminal of second comparator, the non-inverting input terminal of second comparator inputs the reference voltage, The output end of second comparator is connect with the second input terminal of the 4th NAND gate.
3. the control device of enhancing main circuit according to claim 2, which is characterized in that the over-voltage detection circuit also wraps It includes: power supply, first resistor, second resistance and zener diode；
The first end of the first resistor is connect with the power supply, the second end of the first resistor and the first end of second resistance Connection, and connect with the cathode of the zener diode, the same phase of the second end of the second resistance and second comparator Input terminal connection, the plus earth of the zener diode.
4. a kind of Vehicular charger, which is characterized in that the control including enhancing main circuit as described in any one of claims 1 to 3 Device processed.
5. a kind of automobile, which is characterized in that including Vehicular charger as claimed in claim 4.
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CN111665381B (en) * 2020-06-17 2022-06-14 广东博方众济医疗科技有限公司 Safety detection circuit for motor control

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