CN109950943A - A kind of four-way conversion Vehicular charger and control method - Google Patents
A kind of four-way conversion Vehicular charger and control method Download PDFInfo
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Abstract
The invention discloses a kind of four-ways to convert Vehicular charger, and wherein main transformer includes 3 windings, and primary side winding 1 is alternating current input side, and vice-side winding 2 is power battery side, and vice-side winding 3 is Vehicular accumulator cell side；The present invention is not only able to achieve the Two-way energy transfer between exchange input side power grid and DC side power battery, the bi-directional being also able to achieve between power battery pack and Vehicular accumulator cell, power battery pack and Vehicular accumulator cell is set to all have redundant power supply function, have two-way vehicle-mounted OBC and bi-directional DC-DC function, realizes the four-way conversion of energy.Especially battery side is powered to power battery pack, will in case of emergency be awarded power battery pack charging and be provided power support, and improve reliability and safety in electric automobile during traveling.
Description
Technical field
The present invention relates to electric car charging technique field, a kind of four-way conversion Vehicular charger and control are more particularly related to
Method processed.
Background technique
In recent years, flourishing with electric car industry, vehicle electronic device performance and cost requirement are got higher, vehicle-mounted
The cost effective, integrated of electronic equipment, multifunction become the inexorable trend of vehicle electronics industry development.It is especially vehicle-mounted
Charger and vehicle-mounted DC-DC, as the core electric energy conversion module of entire electric car, urgent need Highgrade integration and more function
Energyization.
Fig. 1 is the scheme that relatively conventional vehicle-mounted OBC and DC-DC simple physical integrate at present, the program is not only at high cost,
Volume is big, degree of integration is lower, and function is relatively simple, is no longer satisfied the electric automobile market of high speed development to vehicle-mounted
The requirement of electronic equipment.
Summary of the invention
It is an object of the invention to propose a kind of four-way conversion Vehicular charger and control method, by vehicle-mounted OBC and DC-
DC converter, which is done, electrically to be integrated, and is not only realized machine volume and is minimized, is cost effective, but also function is more diversified, reliability
It is higher；Meanwhile the present invention is not only able to achieve the Two-way energy transfer between exchange input side power grid and DC side power battery, also
The bi-directional being able to achieve between power battery pack and Vehicular accumulator cell makes power battery pack and Vehicular accumulator cell all have redundancy
Function of supplying power has two-way vehicle-mounted OBC and bi-directional DC-DC function.
To achieve the above object, it adopts the following technical scheme that
A kind of four-way conversion Vehicular charger, including main transformer T1, it is characterised in that:
Main transformer T1 includes 3 windings, and primary side winding 1 is alternating current input side, and vice-side winding 2 is power battery side, secondary
Side winding 3 is Vehicular accumulator cell side；
Metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 collectively form full-bridge electricity
Road；1 one end series resonance inductor Lr1 of primary side winding, resonant inductance Lr1 other end series connection electromagnetic relay RLY1, electromagnetism relay
The source electrode of device RLY1 other end connection metal-oxide-semiconductor field effect transistor Q1；1 other end series resonant capacitance Cr1 of primary side winding, resonant capacitance
The drain electrode of Cr1 other end connection metal-oxide-semiconductor field effect transistor Q1；The leakage of the big electrolytic capacitor Cbulk anode connection metal-oxide-semiconductor field effect transistor Q1 of bus
Pole, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q2；
Metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 collectively form full-bridge electricity
Road；2 one end series resonance inductor Lr2 of vice-side winding, the source electrode of connection resonant inductance Lr2 other end connection metal-oxide-semiconductor field effect transistor Q5；It is secondary
2 other end series resonant capacitance Cr2 of side winding, the resonant capacitance Cr2 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q8；Electrolysis electricity
Hold the drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q7 of Co_bat, the source electrode of cathode connection metal-oxide-semiconductor field effect transistor Q8；
Vice-side winding 3 connects a rectification circuit, this rectification circuit can be realized by following 3 kinds of different technologies schemes and be rectified
Pressure stabilizing output:
Technical solution 1:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, MOS effects
It should pipe Q12, metal-oxide-semiconductor field effect transistor Q13, metal-oxide-semiconductor field effect transistor Q14；
Metal-oxide-semiconductor field effect transistor Q10 and metal-oxide-semiconductor field effect transistor Q13 is common source configuration, metal-oxide-semiconductor field effect transistor Q12 and MOS field-effect
Pipe Q14 is common source configuration；
Metal-oxide-semiconductor field effect transistor Q9 drain electrode connection metal-oxide-semiconductor field effect transistor Q11 drain electrode, metal-oxide-semiconductor field effect transistor Q11 source electrode connect MOS effects
Should pipe Q12 drain electrode, metal-oxide-semiconductor field effect transistor Q14 drain electrode connection metal-oxide-semiconductor field effect transistor Q13 drain electrode, metal-oxide-semiconductor field effect transistor Q10 drain electrode connection
Metal-oxide-semiconductor field effect transistor Q9 source electrode；
3 one end series resonance inductor Lr3 of vice-side winding, the resonant inductance Lr3 other end connect the source of metal-oxide-semiconductor field effect transistor Q9
Pole；3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of electrolytic capacitor Cout, cathode connect the drain electrode of metal-oxide-semiconductor field effect transistor Q14.
Technical solution 2:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, MOS effects
Should pipe Q12, four field-effect tube constitute bridge rectifiers；
3 one end series resonance inductor Lr3 of vice-side winding, the source of connection resonant inductance Lr3 other end connection metal-oxide-semiconductor field effect transistor Q9
Pole；3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of electrolytic capacitor Co, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q12；
Anode, the source electrode of the drain electrode connection electrolytic capacitor Co of metal-oxide-semiconductor field effect transistor Q15 connects diode D1 cathode, diode
D1 anode connects electrolytic capacitor Co cathode；
The one end inductance Lpb connects diode D1 cathode, other end connection electrolytic capacitor Cout anode, and electrolytic capacitor Cout is negative
Pole connects diode D1 anode；
The one end electromagnetic relay RLY2 is connecting the source electrode of metal-oxide-semiconductor field effect transistor Q15, other end connection electrolytic capacitor Cout just
Pole.
Technical solution 3:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, MOS effects
Should pipe Q12, four field-effect tube constitute bridge rectifiers；
3 one end series resonance inductor Lr3 of vice-side winding, the source of connection resonant inductance Lr3 other end connection metal-oxide-semiconductor field effect transistor Q9
Pole；3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of electrolytic capacitor Co, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q12；
The leakage of the anode, source electrode connection metal-oxide-semiconductor field effect transistor Q16 of the drain electrode connection electrolytic capacitor Co of metal-oxide-semiconductor field effect transistor Q15
The source electrode of pole, metal-oxide-semiconductor field effect transistor Q16 connects electrolytic capacitor Co cathode；
The one end inductance Lpb connects the drain electrode of metal-oxide-semiconductor field effect transistor Q16, other end connection electrolytic capacitor Cout anode, electrolysis electricity
Hold the source electrode of Cout cathode connection metal-oxide-semiconductor field effect transistor Q16.
A kind of four-way conversion Vehicular charger control method, the steps include:
Selection control working condition after S1, booting, share 4 kinds of working conditions: automobile charged state, power battery pack are to storage
Battery charging state, automobile power cell group inversion feedback grid state, battery give power battery pack urgent charged state；
S2, when be in automobile charged state when:
A, electromagnetic relay RLY1 closed state；
Alternating current side as input terminal, input prime rectification circuit and pfc circuit mains voltage is transformed into it is stable
VPFCDC voltage；
Metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 are full-bridge CLLC structure
Input end switch pipe, MCU carries out PFM frequency modulation control driving signal by sampling power battery side voltage and current value, through main transformer
The primary side winding 1 of depressor T1 is to secondary Bian Chuanneng；
B, simultaneously power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor
Q8 than opening first to close after metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 by realizing together
Step rectification control, vice-side winding 2 export Vbat_Li and charge to power battery pack after rectifying；
C, output voltage Vbat_Pb after battery side vice-side winding 3 rectifies powers to Vehicular accumulator cell side, to realize
Vehicle-mounted OBC function；
S3, when in power battery pack charge a battery state when:
A, electromagnetic relay RLY1 is disconnected, and primary side winding 1 is made to be in open-circuit condition；
Metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 driving are simultaneously closed off,
Alternating current side is in and is fully disconnected state；
B, power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are
Full-bridge CLLC structure input end switch pipe, main control MCU carry out PFM frequency modulation control by sample battery side voltage and current value,
Power battery pack is set to be in discharge condition, vice-side winding 2 passes energy to vice-side winding 3；
C, battery side vice-side winding 3 exports stable voltage Vbat_Pb after rectifying, and charges to Vehicular accumulator cell, thus
Realize the function of vehicle-mounted DC-DC converter；
S4, when be in automobile power cell group inversion feedback grid state when:
A, electromagnetic relay RLY1 closed state, power battery side is as input terminal at this time；
Power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are complete
Bridge CLLC input end switch pipe, main control MCU carry out PFM modulation control by sampling primary side busbar voltage and current value, make power
Battery pack is in discharge condition, and vice-side winding 2 passes energy to primary side winding 1；
B, alternating current side metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 pass through ratio
It opens first to close after metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 and realizes synchronous rectification control
System exports burning voltage VPFC, then exports alternating current by rear class inverter circuit after primary side winding 1 is rectified, realize OBC inversion function
Can, by the electric energy feedback power grid of power battery pack；
C, burning voltage Vbat_Pb is exported after battery side vice-side winding 3 rectifies, and is charged for Vehicular accumulator cell；
S5, when in battery urgent to power battery pack charged state:
A, electromagnetic relay RLY1 disconnect, so that primary side winding 1 is in open-circuit condition, simultaneously close off metal-oxide-semiconductor field effect transistor Q1,
Metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 driving, alternating current side is in and is fully disconnected state；
B, battery side metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12
For full-bridge CLLC input end switch pipe, main control MCU carries out PFM control by sampling power battery side voltage and current value, makes to store
Battery is in discharge condition, and vice-side winding 3 passes energy to vice-side winding 2；
C, power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are logical
It crosses and is realized together than opening first to close after metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12
Step rectification control, exports burning voltage Vbat_Li after vice-side winding 2 is rectified, promptly charges to power battery pack, to realize
Bi-directional DC-DC function.
Corresponding above-mentioned 3 kinds of different rectifying output circuit schemes, are also corresponding with 3 kinds of control methods:
The circuit of corresponding technical solution 1, control method are as follows:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9,
Metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 be synchronous rectification control, with metal-oxide-semiconductor field effect transistor Q5,
Metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 cooperate metal-oxide-semiconductor field effect transistor Q13, MOS effects with opening with pass
Should pipe Q14 respectively than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 with open first put into row PWM control to adjust output voltage
Vbat_Li；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9,
Metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 pass through than metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor
It opens first to close after Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 and realizes synchronous rectification control, cooperate metal-oxide-semiconductor field effect transistor Q13, MOS
Open more same than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 first puts row PWM control and regulation output voltage into field-effect tube Q14 respectively
Vbat_Li；；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9,
Metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 and metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, MOS
Field-effect tube Q3, metal-oxide-semiconductor field effect transistor Q4 cooperate metal-oxide-semiconductor field effect transistor Q13, MOS field-effect with opening with realization synchronous rectification control is closed
Open more same than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 first puts row PWM control and regulation output voltage stabilization electricity into pipe Q14 respectively
Press Vbat_Li；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side MOS field-effect
High level is set in pipe Q13, metal-oxide-semiconductor field effect transistor Q14 driving, it is made to be always on state, metal-oxide-semiconductor field effect transistor Q9, MOS field-effect
Pipe Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 are full-bridge CLLC input end switch pipe, and main control MCU passes through sampling power
Battery side voltage and current value carries out PFM modulation, and battery is made to be in discharge condition.
The circuit of corresponding technical solution 2, control method are as follows:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2
It disconnects, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 with MOS by imitating
Should pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 with open with close realize synchronous rectification, vice-side winding
Output area voltage Vpb, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation after 3 rectifications, pass through BUCK circuit output burning voltage
Vbat_Pb powers to Vehicular accumulator cell side, to realize vehicle-mounted OBC function；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2
It disconnects, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 with MOS by imitating
Should pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 with open with close realize synchronous rectification, vice-side winding
Output area voltage Vpb after 3 rectifications, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, export burning voltage in fact by BUCK circuit
Vbat_Pb charges to Vehicular accumulator cell, to realize the function of vehicle-mounted DC-DC converter；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2
It disconnects, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 with MOS by imitating
Should pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 with open with close realize synchronous rectification, vice-side winding
Output area voltage Vpb after 3 rectifications, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, export burning voltage in fact by BUCK circuit
Vbat_Pb charges for Vehicular accumulator cell, so that OBC inversion function is realized, by the electric energy feedback power grid of power battery pack；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side electromagnetic relay
RLY2 closure, metal-oxide-semiconductor field effect transistor Q15 close driving, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11,
Metal-oxide-semiconductor field effect transistor Q12 be CLLC input side switching tube, main control MCU by sampling power battery side output voltage and current value into
Row PFM control, battery are in discharge condition, realize that vice-side winding 3 passes energy to vice-side winding 2.
The circuit of corresponding technical solution 3, control method are as follows:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q16
Driving is closed, and the body diode built in metal-oxide-semiconductor field effect transistor Q16 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6,
Metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage after the rectification of vice-side winding 3
Vpb, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, give Vehicular accumulator cell
Side power supply, to realize vehicle-mounted OBC function；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q16
Driving is closed, and the body diode built in metal-oxide-semiconductor field effect transistor Q16 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6,
Metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage after the rectification of vice-side winding 3
Vpb, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, give Vehicular accumulator cell
Side power supply, to realize vehicle-mounted OBC function；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q16
Driving is closed, and the body diode built in metal-oxide-semiconductor field effect transistor Q16 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6,
Metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage after the rectification of vice-side winding 3
Vpb, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, give Vehicular accumulator cell
Side power supply, to realize vehicle-mounted OBC function；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side Q15, which is closed, to be driven
Dynamic, diode of the body diode built in Q15 as BOOST circuit, Q16 is PWM pulsewidth modulation, and BOOST circuit is by Vbat_Pb liter
Pressure output Vpb, battery is in discharge condition at this time；Q9, Q10, Q11, Q12 are CLLC input side switching tube, and main control MCU passes through
It samples power battery side output voltage and current value carries out PFM control, realize that vice-side winding 3 passes energy to vice-side winding 2.
Compared with prior art the invention has the advantages that and the utility model has the advantages that
Vehicle-mounted OBC and DC-DC converter are done and electrically integrated, machine volume is not only realized and minimizes, is cost effective, and
And function is more diversified, reliability is higher；Meanwhile the present invention is not only able to achieve exchange input side power grid and DC side power battery
Between Two-way energy transfer, moreover it is possible to realize the bi-directional between power battery pack and Vehicular accumulator cell, make power battery pack
Redundant power supply function is all had with Vehicular accumulator cell, that is, has two-way vehicle-mounted OBC and bi-directional DC-DC function, realizes the four of energy
To conversion.Especially battery side give power battery pack power supply, will in case of emergency award power battery pack charging provide it is dynamic
Power is supported, the reliability and safety in electric automobile during traveling are improved.
Detailed description of the invention
Fig. 1 is vehicle-mounted OBC+DC-DC physical integration scheme
Fig. 2 is the electrical Integrated Solution of vehicle-mounted OBC+DC-DC
Fig. 3 is 1 main circuit topology of technical solution
Fig. 4 is 1 control block diagram of technical solution
Fig. 5 is 1 control flow chart of technical solution
Fig. 6 is that 1 working condition 1 of technical solution sends out wave control strategy
Fig. 7 is that 1 working condition 2 of technical solution sends out wave control strategy
Fig. 8 is that 1 working condition 3 of technical solution sends out wave strategy
Fig. 9 is that 1 working condition 4 of technical solution sends out wave strategy
Figure 10 is 2 main circuit topology figure of technical solution
Figure 11 is that 2 working condition 1 of technical solution sends out wave strategy
Figure 12 is that 2 working condition 2 of technical solution sends out wave strategy
Figure 13 is that 2 working condition 3 of technical solution sends out wave strategy
Figure 14 is that 2 working condition 4 of technical solution sends out wave strategy
Figure 15 is 3 main circuit topology figure of technical solution
Figure 16 is that 3 working condition 1 of technical solution sends out wave strategy
Figure 17 is that 3 working condition 2 of technical solution sends out wave strategy
Figure 18 is that 3 working condition 3 of technical solution sends out wave strategy
Figure 19 is that 3 working condition 4 of technical solution sends out wave strategy.
Specific embodiment
Embodiment 1
Technical solution 1 uses three-dimensional CLLC control technology, increases a vice-side winding as vehicular electricity storage in main transformer
Pond side winding gives battery and load supplying, to realize that OBC and DC-DC is electrically integrated.Physical circuit topology theory figure such as Fig. 3
It is shown.
Each device description of Fig. 3: T1 is the main transformer that vehicle-mounted OBC+DC-DC is integrated, and includes three windings, primary side winding 1
For alternating current input side, vice-side winding 2 is power battery side, and vice-side winding 3 is Vehicular accumulator cell side；RLY1 is electromagnetic relay；
Lr1 is alternating current side resonant inductance, and Cr1 is alternating current side resonant capacitance；Lr2 is output power battery side resonant inductance, and Cr2 is output
Power battery side resonant capacitance；Lr3 is output battery side resonant inductance, and Cr3 is battery side resonant capacitance；Cbulk is mother
The big electrolytic capacitor of line, Co_bat are power battery side electrolytic capacitor, and Cout is output Vehicular accumulator cell side electrolytic capacitor；Q1,Q2,
Q3, Q4 are that CLLC input side switchs N-type MOSFET, and Q5, Q6, Q7, Q8 are CLLC output power battery side full-bridge rectification N-type
MOSFET, Q9, Q10, Q11, Q12, Q13, Q14 are that CLLC output battery side N-type MOSFET, Q10 and Q13, Q12 and Q14 are adopted
With common source level structure.
Control strategy: control block diagram such as Fig. 4.
Control flow chart such as Fig. 5.
Specific control mode:
Working condition 1: automobile charged state:
Alternating current side as input terminal, input prime rectification circuit and pfc circuit mains voltage is transformed into it is stable
VPFC DC voltage.Relay RLY1 is closed at this time, and Q1, Q2, Q3, Q4 are full-bridge CLLC structure input end switch pipe, and MCU passes through
It samples power battery side voltage and current value and carries out PFM frequency modulation control driving signal, the primary side winding 1 through main transformer T1 is to pair
Bian Chuanneng；By realizing synchronous rectification control than opening first to close after Q1, Q2, Q3, Q4, vice-side winding 2 is rectified by Q5, Q6, Q7, Q8 simultaneously
Vbat_Li is exported afterwards to charge to power battery pack；Battery side Q9, Q10, Q11, Q12 and Q5, Q6, Q7, Q8 open together same Guan Shixian
Synchronous rectification control, Q13, Q14 are by carrying out PWM control with first pass is opened with Q10 and Q11, Q9 and Q12, after vice-side winding 3 rectifies
Output voltage Vbat_Pb powers to Vehicular accumulator cell side, to realize vehicle-mounted OBC function.Control hair wave is as shown in Figure 6.
Working condition 2: power battery pack charges a battery state:
Relay RLY1 is disconnected at this time, and primary side winding 1 is made to be in open-circuit condition, simultaneously closes off Q1, Q2, Q3, Q4 driving, city
Electric side is in and is fully disconnected state；Q5, Q6, Q7, Q8 are full-bridge CLLC structure input end switch pipe, and main control MCU is stored by sampling
Battery side voltage and current value carries out PFM frequency modulation control, and power battery pack is made to be in discharge condition, vice-side winding 2 to secondary side around
Group 3 passes energy；Battery side Q9, Q10, Q11, Q12 by than opened after Q5, Q6, Q7, Q8 first close realize synchronous rectification control, Q13,
Q14 exports stable voltage Vbat_ after rectifying winding 3 by carrying out PWM control with first pass is opened with Q10 and Q11, Q9 and Q12
Pb charges to Vehicular accumulator cell, to realize the function of vehicle-mounted DC-DC converter.Control hair wave is as shown in Figure 7.
Working condition 3: automobile power cell group inversion feedback grid:
Power battery side is as input terminal at this time, and relay RLY1 closure, Q5, Q6, Q7, Q8 are that full-bridge CLLC input terminal is opened
Guan Guan, main control MCU carry out PFM modulation control by sampling primary side busbar voltage and current value, and power battery pack is made to be in electric discharge
State, vice-side winding 2 pass energy to primary side winding 1；Q1, Q2, Q3, Q4 by than opened after Q5, Q6, Q7, Q8 first close realize synchronize it is whole
Flow control exports burning voltage VPFC, then exports alternating current by rear class inverter circuit after primary side winding 1 is rectified；Battery side
Q9, Q10, Q11, Q12 and Q1, Q2, Q3, Q4 with open with close realize synchronous rectification control, Q13, Q14 by with Q10 and Q11, Q9
PWM control is carried out with first pass is opened with Q12, burning voltage Vbat_Pb is exported after vice-side winding 3 is rectified, is filled for Vehicular accumulator cell
Electricity, so that OBC inversion function is realized, by the electric energy feedback power grid of power battery pack.Control hair wave is as shown in Figure 8.
Working condition 4: battery gives power battery pack urgent charged state:
Relay RLY1 is disconnected at this time, and primary side winding 1 is made to be in open-circuit condition, simultaneously closes off Q1, Q2, Q3, Q4 driving, city
Electric side is in and is fully disconnected state；High level is set in the driving of battery side Q13, Q14, it is made to be always on state, Q9, Q10,
Q11, Q12 are full-bridge CLLC input end switch pipe, and main control MCU carries out PFM tune by sampling power battery side voltage and current value
System, makes battery be in discharge condition, and vice-side winding 3 passes energy to vice-side winding 2；Q5, Q6, Q7, Q8 by than Q9, Q10, Q11,
It opens first to close after Q12 and realizes synchronous rectification control, export burning voltage Vbat_Li after primary side winding 3 is rectified, give power battery pack
Urgent charging, to realize bi-directional DC-DC function.Control hair wave is as shown in Figure 9.
Embodiment 2
Technical solution 2 uses three-dimensional CLLC control technology, increases a vice-side winding as vehicular electricity storage in main transformer
Pond side winding, while increasing a buck circuit makes it export burning voltage Vbat_Pb to battery and load supplying, to realize
OBC and DC-DC is electrically integrated, topology theory figure such as Figure 10.
Each device description of Figure 10: compared to Fig. 3, alternating current side is identical as power battery side；Battery side reduce with Q10,
Q12 common source metal-oxide-semiconductor Q13, Q14 increase electrolytic capacitor Co at switch metal-oxide-semiconductor Q15, Vpb, diode D1, electromagnetic relay
RLY2, BUCK inductance Lpb.
Specific control mode:
Working condition 1: automobile charged state:
Alternating current side is equal with power battery side with 1 working condition 1 of scheme；Battery side RLY2 disconnect, Q9, Q10, Q11,
Q12 is by the way that, with opening with realization synchronous rectification is closed, output area voltage Vpb, Q15 are after vice-side winding 3 rectifies with Q5, Q6, Q7, Q8
PWM pulsewidth modulation is powered, to realize vehicle-mounted by BUCK circuit output burning voltage Vbat_Pb to Vehicular accumulator cell side
OBC function.Control hair wave is as shown in figure 11.
Working condition 2: power battery pack charges a battery state:
Alternating current side is equal with power battery side with 1 working condition 2 of scheme；Battery side RLY2 disconnect, Q9, Q10, Q11,
Q12 is by the way that, with opening with realization synchronous rectification is closed, output area voltage Vpb, Q15 are after vice-side winding 3 rectifies with Q5, Q6, Q7, Q8
PWM pulsewidth modulation exports burning voltage Vbat_Pb by BUCK circuit in fact, gives Vehicular accumulator cell to charge, to realize vehicle-mounted
The function of DC-DC converter.Control hair wave is as shown in figure 12.
Working condition 3: automobile power cell group inversion feedback grid:
Alternating current side is equal with power battery side with 1 working condition 3 of scheme；Battery side RLY2 disconnect, Q9, Q10, Q11,
Q12 is by the way that, with opening with realization synchronous rectification is closed, output area voltage Vpb, Q15 are after vice-side winding 3 rectifies with Q5, Q6, Q7, Q8
PWM pulsewidth modulation exports burning voltage Vbat_Pb by BUCK circuit in fact, charges for Vehicular accumulator cell, to realize that OBC is inverse
Become function, by the electric energy feedback power grid of power battery pack.Control hair wave is as shown in figure 13.
Working condition 4: battery gives power battery pack urgent charged state:
Alternating current side and power battery side are equal with 1 working condition 4 of scheme；Battery side RLY2 is closed at this time, and Q15, which is closed, to be driven
Dynamic, Q9, Q10, Q11, Q12 are CLLC input side switching tube, and main control MCU passes through sampling power battery side output voltage and current value
PFM control is carried out, battery is in discharge condition, realizes that vice-side winding 3 passes energy to vice-side winding 2.Wave control is sent out such as Figure 14 institute
Show.
Embodiment 3
Technical solution 3 equally uses three-dimensional CLLC control technology, and battery side increases by one unlike the first two scheme
A buck/boost circuit exports burning voltage Vbat_Pb, can also battery be made to make when can make battery side as outlet side
Vbat_Pb is boosted as Vpb when for input side, more preferably realizes the function of charging to power battery pack.Topology theory figure such as Figure 15.
3 device description of scheme: on the basis of scheme 2, D1 and RLY2 is removed, a NMOS tube Q16 is increased.
Specific control mode:
Working condition 1: automobile charged state
Alternating current side is equal with power battery side with 1 working condition 1 of scheme；Battery side Q16 driving is closed, built in Q16
Body diode passes through same with realization is closed with opening with Q5, Q6, Q7, Q8 as the diode in BUCK circuit, Q9, Q10, Q11, Q12
Step rectification, output area voltage Vpb after vice-side winding 3 rectifies, Q15 are PWM pulsewidth modulation, stablize electricity by BUCK circuit output
Vbat_Pb is pressed, is powered to Vehicular accumulator cell side, to realize vehicle-mounted OBC function.Control hair wave is as shown in figure 16
Working condition 2: power battery pack charges a battery state:
Alternating current side is equal with power battery side with 1 working condition 2 of scheme；Battery side Q14 driving is closed, built in Q16
Body diode passes through same with realization is closed with opening with Q5, Q6, Q7, Q8 as the diode in BUCK circuit, Q9, Q10, Q11, Q12
Step rectification, output area voltage Vpb after vice-side winding 3 rectifies, Q15 are PWM pulsewidth modulation, stablize electricity by BUCK circuit output
Vbat_Pb is pressed, is powered to Vehicular accumulator cell side, to realize vehicle-mounted OBC function.Control hair wave is as shown in figure 17.
Working condition 3: automobile power cell group inversion feedback grid:
Alternating current side is equal with power battery side with 1 working condition 3 of scheme；Battery side Q14 driving is closed, built in Q16
Body diode passes through same with realization is closed with opening with Q5, Q6, Q7, Q8 as the diode in BUCK circuit, Q9, Q10, Q11, Q12
Step rectification, output area voltage Vpb after vice-side winding 3 rectifies, Q15 are PWM pulsewidth modulation, stablize electricity by BUCK circuit output
Vbat_Pb is pressed, is powered to Vehicular accumulator cell side, to realize vehicle-mounted OBC function.Control hair wave is as shown in figure 18.
Working condition 4: battery gives power battery pack urgent charged state:
Alternating current side and power battery side are equal with 1 working condition 4 of scheme；Battery side Q15, which is closed, at this time drives, in Q15
Diode of the body diode as BOOST circuit is set, Q16 is PWM pulsewidth modulation, and Vbat_Pb is boosted and exported by BOOST circuit
Vpb, battery is in discharge condition at this time；Q9, Q10, Q11, Q12 are CLLC input side switching tube, and main control MCU is dynamic by sampling
Power battery side output voltage and current value carry out PFM control, realize that vice-side winding 3 passes energy to vice-side winding 2.Wave control is sent out as schemed
Shown in 19.
The above are basic control of the invention and hair wave strategies, can be realized by the control strategy of three of the above scheme vehicle-mounted
OBC and DC-DC miniaturization is electrical integrated, and cost is greatly lowered, while possessing two-way OBC and bi-directional DC-DC function, realizes energy
The three-dimensional of amount is converted.Especially battery side is powered to power battery pack, will in case of emergency award power battery pack charging
Power support is provided, the reliability and safety in electric automobile during traveling are improved.
Claims (8)
1. a kind of four-way converts Vehicular charger, including main transformer T1, it is characterised in that:
Main transformer T1 include 3 windings, primary side winding 1 be alternating current input side, vice-side winding 2 be power battery side, secondary side around
Group 3 is Vehicular accumulator cell side；
Metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 collectively form full-bridge circuit；
1 one end series resonance inductor Lr1 of primary side winding, resonant inductance Lr1 other end series connection electromagnetic relay RLY1, electromagnetic relay
The source electrode of RLY1 other end connection metal-oxide-semiconductor field effect transistor Q1；Primary side winding 1 other end series resonant capacitance Cr1, resonant capacitance Cr1
The drain electrode of other end connection metal-oxide-semiconductor field effect transistor Q1；The drain electrode of the big electrolytic capacitor Cbulk anode connection metal-oxide-semiconductor field effect transistor Q1 of bus,
The source electrode of cathode connection metal-oxide-semiconductor field effect transistor Q2；
Metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 collectively form full-bridge circuit；
2 one end series resonance inductor Lr2 of vice-side winding, the source electrode of connection resonant inductance Lr2 other end connection metal-oxide-semiconductor field effect transistor Q5；Secondary side
2 other end series resonant capacitance Cr2 of winding, the resonant capacitance Cr2 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q8；Electrolytic capacitor
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q7 of Co_bat, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q8；
Vice-side winding 3 connects a rectification circuit.
2. a kind of four-way as described in claim 1 converts Vehicular charger, it is characterised in that:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor
Q12, metal-oxide-semiconductor field effect transistor Q13, metal-oxide-semiconductor field effect transistor Q14；
Metal-oxide-semiconductor field effect transistor Q10 and metal-oxide-semiconductor field effect transistor Q13 is common source configuration, metal-oxide-semiconductor field effect transistor Q12 and metal-oxide-semiconductor field effect transistor Q14
For common source configuration；
Metal-oxide-semiconductor field effect transistor Q9 drain electrode connection metal-oxide-semiconductor field effect transistor Q11 drain electrode, metal-oxide-semiconductor field effect transistor Q11 source electrode connect metal-oxide-semiconductor field effect transistor
Q12 drain electrode, metal-oxide-semiconductor field effect transistor Q14 drain electrode connection metal-oxide-semiconductor field effect transistor Q13 drain electrode, metal-oxide-semiconductor field effect transistor Q10 drain electrode connection MOS
Effect pipe Q9 source electrode；
3 one end series resonance inductor Lr3 of vice-side winding, the source electrode of connection resonant inductance Lr3 other end connection metal-oxide-semiconductor field effect transistor Q9；
3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；Electrolysis
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of capacitor Cout, cathode connect the drain electrode of metal-oxide-semiconductor field effect transistor Q14.
3. a kind of four-way as described in claim 1 converts Vehicular charger, it is characterised in that:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor
Q12, four field-effect tube constitute bridge rectifier；
3 one end series resonance inductor Lr3 of vice-side winding, the source electrode of connection resonant inductance Lr3 other end connection metal-oxide-semiconductor field effect transistor Q9；
3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；Electrolysis
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of capacitor Co, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q12；
Anode, the source electrode of the drain electrode connection electrolytic capacitor Co of metal-oxide-semiconductor field effect transistor Q15 connects diode D1 cathode, and diode D1 is just
Pole connects electrolytic capacitor Co cathode；
The one end inductance Lpb connects diode D1 cathode, other end connection electrolytic capacitor Cout anode, and electrolytic capacitor Cout cathode connects
Connect diode D1 anode；
The one end electromagnetic relay RLY2 connects the source electrode of metal-oxide-semiconductor field effect transistor Q15, other end connection electrolytic capacitor Cout anode.
4. a kind of four-way as described in claim 1 converts Vehicular charger, it is characterised in that:
The rectification circuit includes metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor
Q12, four field-effect tube constitute bridge rectifier；
3 one end series resonance inductor Lr3 of vice-side winding, the source electrode of connection resonant inductance Lr3 other end connection metal-oxide-semiconductor field effect transistor Q9；
3 other end series resonant capacitance Cr3 of vice-side winding, the resonant capacitance Cr3 other end connect the drain electrode of metal-oxide-semiconductor field effect transistor Q12；Electrolysis
The drain electrode of the anode connection metal-oxide-semiconductor field effect transistor Q11 of capacitor Co, cathode connect the source electrode of metal-oxide-semiconductor field effect transistor Q12；
The drain electrode of the anode, source electrode connection metal-oxide-semiconductor field effect transistor Q16 of the drain electrode connection electrolytic capacitor Co of metal-oxide-semiconductor field effect transistor Q15, MOS
The source electrode of field-effect tube Q16 connects electrolytic capacitor Co cathode；
The one end inductance Lpb connects the drain electrode of metal-oxide-semiconductor field effect transistor Q16, other end connection electrolytic capacitor Cout anode, electrolytic capacitor
The source electrode of Cout cathode connection metal-oxide-semiconductor field effect transistor Q16.
5. a kind of four-way converts Vehicular charger control method, the steps include:
Selection control working condition after S1, booting, share 4 kinds of working conditions: automobile charged state, power battery pack are to battery
Charged state, automobile power cell group inversion feedback grid state, battery give power battery pack urgent charged state；
S2, when be in automobile charged state when:
A, electromagnetic relay RLY1 closed state；
Alternating current side inputs prime rectification circuit and mains voltage is transformed into stable V by pfc circuit as input terminalPFCDirectly
Galvanic electricity pressure；
Metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 are the input of full-bridge CLLC structure
End switch pipe, MCU carries out PFM frequency modulation control driving signal by sampling power battery side voltage and current value, through main transformer
The primary side winding 1 of T1 is to secondary Bian Chuanneng；
B, power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are logical simultaneously
Cross than opened after metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 first close realize synchronize it is whole
Flow control, vice-side winding 2 export Vbat_Li and charge to power battery pack after rectifying；
C, output voltage Vbat_Pb after battery side vice-side winding 3 rectifies powers to Vehicular accumulator cell side, to realize vehicle
Carry OBC function；
S3, when in power battery pack charge a battery state when:
A, electromagnetic relay RLY1 is disconnected, and primary side winding 1 is made to be in open-circuit condition；
Simultaneously close off metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 driving, alternating current
Side is in and is fully disconnected state；
B, power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are full-bridge
CLLC structure input end switch pipe, main control MCU carry out PFM frequency modulation control by sample battery side voltage and current value, make
Power battery pack is in discharge condition, and vice-side winding 2 passes energy to vice-side winding 3；
C, battery side vice-side winding 3 exports stable voltage Vbat_Pb after rectifying, and charges to Vehicular accumulator cell, to realize
The function of vehicle-mounted DC-DC converter；
S4, when be in automobile power cell group inversion feedback grid state when:
A, electromagnetic relay RLY1 closed state, power battery side is as input terminal at this time；
Power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 are full-bridge
CLLC input end switch pipe, main control MCU carry out PFM modulation control by sampling primary side busbar voltage and current value, make power electric
Pond group is in discharge condition, and vice-side winding 2 passes energy to primary side winding 1；
B, alternating current side metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 pass through than MOS
It opens first to close after field-effect tube Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 and realizes synchronous rectification control,
Burning voltage VPFC is exported after primary side winding 1 is rectified, then alternating current is exported by rear class inverter circuit, realizes OBC inversion function,
By the electric energy feedback power grid of power battery pack；
C, burning voltage Vbat_Pb is exported after battery side vice-side winding 3 rectifies, and is charged for Vehicular accumulator cell；
S5, when in battery urgent to power battery pack charged state:
A, electromagnetic relay RLY1 is disconnected, and so that primary side winding 1 is in open-circuit condition, is simultaneously closed off metal-oxide-semiconductor field effect transistor Q1, MOS
Effect pipe Q2, metal-oxide-semiconductor field effect transistor Q3, metal-oxide-semiconductor field effect transistor Q4 driving, alternating current side is in and is fully disconnected state；
B, battery side metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 are complete
Bridge CLLC input end switch pipe, main control MCU carry out PFM control by sampling power battery side voltage and current value, make battery
In discharge condition, vice-side winding 3 passes energy to vice-side winding 2；
C, power battery side metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 pass through ratio
Opened after metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 first close realize synchronize it is whole
Flow control exports burning voltage Vbat_Li after vice-side winding 2 is rectified, promptly charges to power battery pack, to realize two-way
DC-DC function.
6. a kind of four-way as claimed in claim 5 converts Vehicular charger control method, it is characterised in that:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 are synchronous rectification control, with metal-oxide-semiconductor field effect transistor Q5, MOS
Effect pipe Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 cooperate metal-oxide-semiconductor field effect transistor Q13, metal-oxide-semiconductor field effect transistor with opening with pass
Open more same than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 first puts row PWM control and regulation output voltage Vbat_Li into Q14 respectively；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by than metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6,
It opens first to close after metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 and realizes synchronous rectification control, cooperate metal-oxide-semiconductor field effect transistor Q13, MOS
Open more same than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 first puts row PWM control and regulation output voltage into effect pipe Q14 respectively
Vbat_Li；；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q9, MOS
Field-effect tube Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 and metal-oxide-semiconductor field effect transistor Q1, metal-oxide-semiconductor field effect transistor Q2, MOS
Effect pipe Q3, metal-oxide-semiconductor field effect transistor Q4 cooperate metal-oxide-semiconductor field effect transistor Q13, metal-oxide-semiconductor field effect transistor with opening with realization synchronous rectification control is closed
Open more same than metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q12 first puts row PWM control and regulation output voltage stabilization voltage into Q14 respectively
Vbat_Li；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side metal-oxide-semiconductor field effect transistor
High level is set in Q13, metal-oxide-semiconductor field effect transistor Q14 driving, it is made to be always on state, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor
Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 are full-bridge CLLC input end switch pipe, and main control MCU passes through sampling power electric
Pond side voltage and current value carries out PFM modulation, and battery is made to be in discharge condition.
7. a kind of four-way as claimed in claim 5 converts Vehicular charger control method, it is characterised in that:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2 is disconnected
Open, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with MOS field-effect
Pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification, vice-side winding 3 with same close is opened
Output area voltage Vpb after rectification, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, pass through BUCK circuit output burning voltage
Vbat_Pb powers to Vehicular accumulator cell side, to realize vehicle-mounted OBC function；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2 is disconnected
Open, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with MOS field-effect
Pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification, vice-side winding 3 with same close is opened
Output area voltage Vpb after rectification, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, export burning voltage in fact by BUCK circuit
Vbat_Pb charges to Vehicular accumulator cell, to realize the function of vehicle-mounted DC-DC converter；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side electromagnetic relay RLY2 is disconnected
Open, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with MOS field-effect
Pipe Q5, metal-oxide-semiconductor field effect transistor Q6, metal-oxide-semiconductor field effect transistor Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification, vice-side winding 3 with same close is opened
Output area voltage Vpb after rectification, metal-oxide-semiconductor field effect transistor Q15 are PWM pulsewidth modulation, export burning voltage in fact by BUCK circuit
Vbat_Pb charges for Vehicular accumulator cell, so that OBC inversion function is realized, by the electric energy feedback power grid of power battery pack；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side electromagnetic relay RLY2
Closure, metal-oxide-semiconductor field effect transistor Q15 close driving, metal-oxide-semiconductor field effect transistor Q9, metal-oxide-semiconductor field effect transistor Q10, metal-oxide-semiconductor field effect transistor Q11, MOS
Effect pipe Q12 is CLLC input side switching tube, and main control MCU carries out PFM by sampling power battery side output voltage and current value
Control, battery are in discharge condition, realize that vice-side winding 3 passes energy to vice-side winding 2.
8. a kind of four-way as claimed in claim 5 converts Vehicular charger control method, it is characterised in that:
In step S2, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q14 driving
It closes, the body diode built in metal-oxide-semiconductor field effect transistor Q14 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS effects
Should pipe Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, MOS
Effect pipe Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage Vpb, MOS after the rectification of vice-side winding 3
Field-effect tube Q13 is PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, is powered to Vehicular accumulator cell side,
To realize vehicle-mounted OBC function；
In step S3, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q16 driving
It closes, the body diode built in metal-oxide-semiconductor field effect transistor Q16 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS effects
Should pipe Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, MOS
Effect pipe Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage Vpb, MOS after the rectification of vice-side winding 3
Field-effect tube Q15 is PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, is powered to Vehicular accumulator cell side,
To realize vehicle-mounted OBC function；
In step S4, the battery side vice-side winding 3 rectifies control mode are as follows: battery side metal-oxide-semiconductor field effect transistor Q16 driving
It closes, the body diode built in metal-oxide-semiconductor field effect transistor Q16 is as the diode in BUCK circuit, metal-oxide-semiconductor field effect transistor Q9, MOS effects
Should pipe Q10, metal-oxide-semiconductor field effect transistor Q11, metal-oxide-semiconductor field effect transistor Q12 by with metal-oxide-semiconductor field effect transistor Q5, metal-oxide-semiconductor field effect transistor Q6, MOS
Effect pipe Q7, metal-oxide-semiconductor field effect transistor Q8 realize synchronous rectification with same close is opened, output area voltage Vpb, MOS after the rectification of vice-side winding 3
Field-effect tube Q15 is PWM pulsewidth modulation, by BUCK circuit output burning voltage Vbat_Pb, is powered to Vehicular accumulator cell side,
To realize vehicle-mounted OBC function；
In step S5, the 3 discharge condition control mode of battery side vice-side winding are as follows: battery side Q15 closes driving,
Diode of the body diode built in Q15 as BOOST circuit, Q16 are PWM pulsewidth modulation, and BOOST circuit boosts Vbat_Pb
Vpb is exported, battery is in discharge condition at this time；Q9, Q10, Q11, Q12 are CLLC input side switching tube, and main control MCU is by adopting
Sample power battery side output voltage and current value carry out PFM control, realize that vice-side winding 3 passes energy to vice-side winding 2.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111313709A (en) * | 2020-03-27 | 2020-06-19 | 杭州必易微电子有限公司 | Synchronous rectification control circuit, control method thereof and flyback isolated conversion circuit |
| CN112421961A (en) * | 2020-10-30 | 2021-02-26 | 杭州富特科技股份有限公司 | Vehicle-mounted DC/DC converter with reverse pre-charging function and vehicle-mounted charging device |
| WO2021057491A1 (en) * | 2019-09-29 | 2021-04-01 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle having same |
| CN112821530A (en) * | 2021-01-08 | 2021-05-18 | 苏州汇川联合动力系统有限公司 | Vehicle-mounted charging circuit and method and vehicle-mounted power supply |
| WO2022142482A1 (en) * | 2020-12-30 | 2022-07-07 | 广州奥鹏能源科技有限公司 | Bidirectional charging circuit, apparatus, and control method for electricity storage device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329940A (en) * | 2016-11-07 | 2017-01-11 | 江南大学 | Double-transformer serial and parallel structure full-bridge LLC (logical link control) resonant converter |
| CN107284273A (en) * | 2017-07-11 | 2017-10-24 | 深圳市永联科技股份有限公司 | A kind of Vehicular charger main circuit of integrated DC/DC converters and its control |
| CN108512256A (en) * | 2018-06-14 | 2018-09-07 | 河北工业大学 | A kind of multifunctional vehicle mounted charge and discharge integral system |
| CN208723603U (en) * | 2018-10-12 | 2019-04-09 | 深圳市永联科技股份有限公司 | A kind of four-way conversion Vehicular charger |
-
2018
- 2018-10-12 CN CN201811186811.XA patent/CN109950943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329940A (en) * | 2016-11-07 | 2017-01-11 | 江南大学 | Double-transformer serial and parallel structure full-bridge LLC (logical link control) resonant converter |
| CN107284273A (en) * | 2017-07-11 | 2017-10-24 | 深圳市永联科技股份有限公司 | A kind of Vehicular charger main circuit of integrated DC/DC converters and its control |
| CN108512256A (en) * | 2018-06-14 | 2018-09-07 | 河北工业大学 | A kind of multifunctional vehicle mounted charge and discharge integral system |
| CN208723603U (en) * | 2018-10-12 | 2019-04-09 | 深圳市永联科技股份有限公司 | A kind of four-way conversion Vehicular charger |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057491A1 (en) * | 2019-09-29 | 2021-04-01 | 比亚迪股份有限公司 | Vehicle-mounted charging system and vehicle having same |
| CN111313709A (en) * | 2020-03-27 | 2020-06-19 | 杭州必易微电子有限公司 | Synchronous rectification control circuit, control method thereof and flyback isolated conversion circuit |
| CN112421961A (en) * | 2020-10-30 | 2021-02-26 | 杭州富特科技股份有限公司 | Vehicle-mounted DC/DC converter with reverse pre-charging function and vehicle-mounted charging device |
| WO2022142482A1 (en) * | 2020-12-30 | 2022-07-07 | 广州奥鹏能源科技有限公司 | Bidirectional charging circuit, apparatus, and control method for electricity storage device |
| CN112821530A (en) * | 2021-01-08 | 2021-05-18 | 苏州汇川联合动力系统有限公司 | Vehicle-mounted charging circuit and method and vehicle-mounted power supply |
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