CN105576731A - Vehicle-mounted charging and inversion bidirectional AC power supply system - Google Patents

Vehicle-mounted charging and inversion bidirectional AC power supply system Download PDF

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Publication number
CN105576731A
CN105576731A CN201410555540.6A CN201410555540A CN105576731A CN 105576731 A CN105576731 A CN 105576731A CN 201410555540 A CN201410555540 A CN 201410555540A CN 105576731 A CN105576731 A CN 105576731A
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China
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switching tube
described
dc
group
ac
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CN201410555540.6A
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Chinese (zh)
Inventor
刘立强
朱昌亚
洪光岱
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天宝电子(惠州)有限公司
惠州市锦湖实业发展有限公司
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Priority to CN201410555540.6A priority Critical patent/CN105576731A/en
Publication of CN105576731A publication Critical patent/CN105576731A/en

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Abstract

The invention relates to a vehicle-mounted charging and inversion bidirectional AC power supply system, and belongs to the field of inversion power supply. The system comprises a storage battery, a DC/DC bidirectional conversion unit, an energy-storage capacitor, an AC/DC bridgeless PFC and DC/AC inversion circuit and an AC load in electric connection sequentially; the commercial power input end is connected with the AC load in parallel, and a switching device is arranged between the commercial power input end and the AC load; the DC/DC bidirectional conversion unit comprises a transformer, a first group of switch tubes and a second group of switch tubes; the AC/DC bridgeless PFC and DC/AC inversion circuit comprises a third group of switch tubes; and the control circuit controls ON/OFF of the first group of switch tubes and the second group of switch tubes, high-voltage DC at the two ends of the energy-storage capacitor is converted into low-voltage DC to charge the storage battery and regulate the charging current. The inversion power supply can output purely sinusoidal AC; it is not required to buy a matched charger, use is convenient, and the cost and the size are both reduced; and the charging current of the storage battery can be adjusted, the battery tends not to be damaged, and the service life of the battery is prolonged.

Description

A kind of vehicle-mounted charge and inversion Bidirectional variable-flow power-supply system

Technical field

The present invention designs inverter field, particularly a kind of vehicle-mounted charge and inversion Bidirectional variable-flow power-supply system.

Background technology

Along with popularizing of automobile, more and more application in domestic appliances is on automobile, these electrical equipment adopt 220V AC-powered mostly, when using these electrical equipment in the wild, need to adopt inverter that automobile storage battery 12V direct current is converted to 220V alternating current to power to AC load, inverter possesses 3 ports usually: direct current (battery) input port, exchange input port and exchange delivery outlet, corresponding 3 converter units, be respectively: DC/DC booster converter storage battery low-voltage direct current (DC) electricity being upgraded to bus capacitor high pressure, convert mains (AC) to bus capacitor high pressure and complete input power factor correct AC-DCPFC converter unit, dc-link capacitance high pressure is converted to the DC-AC inverter exchanging and export.

What popularize on the market at present is modified sine wave inverter, and its circuit is simple, although cost is cheap, has higher flip-flop, be not suitable for electric machinery load in the alternating current because of output; And automobile is placed for a long time or the too low storage battery that causes of temperature cannot start engine, at this moment need to charge in time to automobile storage battery, user generally uses independently charger, portable device charging current is generally no more than 15A, battery is full of needs 4 ~ 8 hours, brings inconvenience like this to car owner, and no matter in storage battery electricity how many, the electric current of charging is constant, can affect the useful life of battery; And user needs to have purchased Vehicular power inverter and supporting charger, uses inconvenience, and spends high, occupy the space that automobile is limited simultaneously.

Summary of the invention

The object of the invention is to, design a kind of vehicle-mounted charge and inversion Bidirectional variable-flow power-supply system, this inverter can export the very little sine wave alternating current of DC noise; And be integrated with battery charging circuit, and without the need to buying supporting charger, easy to use, cost-saving and volume; And the charging current energy adjusting size of storage battery, not fragile battery, extending battery life.The technical scheme adopted for solving prior art problem is:

A kind of vehicle-mounted charge and inversion Bidirectional variable-flow power-supply system, it comprise be electrically connected successively storage battery, DC/DC two-way changing unit, storage capacitor, AC/DC non-bridge PFC and DC/AC inverter circuit, AC load;

And be parallel with mains electricity input end with AC load two ends, and be also provided with switching device shifter between mains electricity input end and AC load;

Control circuit, controlling conducting and the disconnection of switching device shifter, is charge mode during described switching device shifter conducting, is inverter mode when described switching device shifter disconnects;

Described DC/DC two-way changing unit, includes

Transformer, first group of switching tube, second group of switching tube;

Primary winding two ends are connected with first group of switching tube, and transformer secondary output winding two ends are connected with second group of switching tube;

Described AC/DC non-bridge PFC and DC/AC inverter circuit, include the 3rd group of switching tube;

During inverter mode, control circuit controls conducting and the cut-off of the 3rd group of switching tube by SPWM mode, and the high voltage direct current at storage capacitor two ends being converted to alternating current is that AC load is powered;

During charge mode, control circuit controls conducting and the cut-off of first group of switching tube and second group of switching tube by PWM mode, the high voltage direct current at storage capacitor two ends is converted to low-voltage DC and charges a battery, and regulates charging current.

Further, described first group of switching tube comprises the first switching tube, second switch pipe;

Described DC/DC two-way changing unit also includes first filter capacitor in parallel with storage battery two ends, the first inductance be connected with primary winding centre cap;

The described first inductance other end connects the positive pole of storage battery, and described first switching tube is all connected the negative pole of storage battery with the source electrode of second switch pipe, and primary winding two ends connect the drain electrode of the first switching tube, the drain electrode of second switch pipe respectively.

Further, described second group of switching tube comprises the 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube, common port after the source electrode of described 3rd switching tube is connected with the drain electrode of the 5th switching tube is connected to again transformer secondary output winding one end, and the common port after the source electrode of the 4th switching tube is connected with the drain electrode of the 6th switching tube is connected to again the transformer secondary output winding other end;

The drain electrode of described 3rd switching tube and the drain electrode of the 4th switching tube are all connected to one end of described storage capacitor, and the source electrode of described 5th switching tube and the source electrode of the 6th switching tube are all connected to the other end of described storage capacitor.

Further, described AC/DC non-bridge PFC and DC/AC inverter circuit, also include the second inductance and the second filter capacitor;

Described 3rd group of switching tube comprises the 7th switching tube, the 8th switching tube, the 9th switching tube and the tenth switching tube, the source electrode of described 7th switching tube is connected with the drain electrode of the 9th switching tube, its common port is connected to again one end of described second inductance, and the described second inductance other end is connected to the positive input terminal of AC load;

The source electrode of the 8th switching tube is connected with the drain electrode of the tenth switching tube, and its common port is connected to again the negative input end of described AC load; The drain electrode of described 7th switching tube and the drain electrode of the 8th switching tube are all connected to one end of described storage capacitor, and the source electrode of described 9th switching tube and the source electrode of the tenth switching tube are all connected to the other end of described storage capacitor.

Preferably but be not limited to, described switching device shifter is relay.

Preferably but be not limited to, described first group of switching tube, second group of switching tube and the 3rd group of switching tube are MOSFET pipe or IGBT pipe, and be parallel with diode between the source electrode of IGBT pipe and drain electrode, and the drain electrode that the anode of diode connects the source electrode of IGBT pipe, the negative electrode of diode connects IGBT pipe.

Preferably but be not limited to, described AC/DC non-bridge PFC and DC/AC inverter circuit are single-phase non-bridge PFC circuits, and described mains electricity input end is input as single-phase civil power.

Therefore, a kind of vehicle-mounted charge described in the present invention and inversion Bidirectional variable-flow power-supply system, concrete beneficial effect is:

1, in the present invention power work when inverter mode, control circuit is by the conducting of the 3rd group of switching tube in SPWM mode control AC/DC non-bridge PFC and DC/AC inverter circuit and cut-off, the high voltage direct current at storage capacitor two ends being converted to alternating current is that AC load is powered, and in the sine wave alternating current exported under which, DC noise is little;

2, in the present invention, circuit, under the control of control circuit, can be operated in charge mode and inverter mode, is charge mode during described switching device shifter conducting, is inverter mode when described switching device shifter disconnects;

The alternating current of civil power can be transferred to low-voltage DC during charge mode in the present invention is charge in batteries, without the need to buying supporting charger, easy to use, cost-saving and volume;

3, when in the present invention, power-supply system is operated in charge mode, control circuit controls conducting and the cut-off of first group of switching tube and second group of switching tube by PWM mode, in conjunction with the electricity at storage battery two ends, regulates charging current.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structured flowchart of a kind of vehicle-mounted charge of the present invention and inversion Bidirectional variable-flow power-supply system;

Fig. 2 is the schematic diagram of a kind of vehicle-mounted charge of providing of the first embodiment of the present invention and inversion Bidirectional variable-flow power-supply system;

Fig. 3 is the schematic diagram of a kind of vehicle-mounted charge of providing of the second embodiment of the present invention and inversion Bidirectional variable-flow power-supply system;

Fig. 4 is the Battery charge controller flow chart of a kind of vehicle-mounted charge of the present invention and inversion Bidirectional variable-flow power-supply system.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment 1:

See accompanying drawing 1, a kind of vehicle-mounted charge and inversion Bidirectional variable-flow power-supply system, it comprise be electrically connected successively storage battery 100, DC/DC two-way changing unit 200, storage capacitor 300, AC/DC non-bridge PFC and DC/AC inverter circuit 400, AC load 500; And be parallel with mains electricity input end 700 with AC load 500 two ends, and be also provided with switching device shifter 600 between mains electricity input end 700 and AC load 500, preferably but be not limited to, described switching device shifter 600 is relay;

Control circuit 800, control conducting and the disconnection of switching device shifter 600, being charge mode during described switching device shifter 600 conducting, is inverter mode when described switching device shifter 600 disconnects; And control circuit 800 includes battery voltage sampling circuit (not indicating in figure) and battery current sample circuit (not indicating in figure), the electric current that can control to charge a battery according to the voltage of sampling or current signal, unlatching or shutoff charge mode; Control circuit 800 also can detect the voltage at storage capacitor 300 two ends, can also sample to city's signal of telecommunication of input.

See accompanying drawing 2, described DC/DC two-way changing unit, includes transformer T1, first group of switching tube, second group of switching tube; The armature winding two ends of transformer T1 are connected with first group of switching tube, and the secondary winding two ends of transformer T1 are connected with second group of switching tube; Described first group of switching tube comprises the first switching tube Q1, second switch pipe Q2; And described DC/DC two-way changing unit 200 also includes the first filter capacitor C1 in parallel with storage battery 100 two ends, the first inductance L 1 be connected with the armature winding centre cap of transformer T1; Described first inductance L 1 other end connects the positive pole VBAT+ of storage battery 100, and described first switching tube Q1 and the source electrode of second switch pipe Q2 are all connected the negative pole VBAT-of storage battery 100, transformer T1 armature winding two ends connect the drain electrode of the first switching tube Q1, the drain electrode of second switch pipe Q2 respectively.

Further, described second group of switching tube comprises the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5 and the 6th switching tube Q6, common port after the source electrode of described 3rd switching tube Q3 is connected with the drain electrode of the 5th switching tube Q5 is connected to again transformer T1 secondary winding one end, and the common port after the source electrode of the 4th switching tube Q4 is connected with the drain electrode of the 6th switching tube Q6 is connected to again the transformer T1 secondary winding other end; The drain electrode of described 3rd switching tube Q3 and the drain electrode of the 4th switching tube Q4 are all connected to one end of described storage capacitor C2, and the source electrode of described 5th switching tube Q5 and the source electrode of the 6th switching tube Q6 are all connected to the other end of described storage capacitor C2.

Described AC/DC non-bridge PFC and DC/AC inverter circuit 400, include the 3rd group of switching tube, the second inductance L 2 and the second filter capacitor C3; Described 3rd group of switching tube comprises the 7th switching tube Q7, the 8th switching tube Q8, the 9th switching tube Q9 and the tenth switching tube Q10, and the source electrode of described 7th switching tube Q7 is connected with the drain electrode of the 9th switching tube Q9, its common port is connected to again one end of described second inductance L 2, and described second inductance L 2 other end is connected to the positive input terminal of AC load 500; The source electrode of the 8th switching tube Q8 is connected with the drain electrode of the tenth switching tube Q10, and its common port is connected to again the negative input end of described AC load 500; The drain electrode of described 7th switching tube Q7 and the drain electrode of the 8th switching tube Q8 are all connected to one end of described storage capacitor C2, and the source electrode of described 9th switching tube Q9 and the source electrode of the tenth switching tube Q10 are all connected to the other end of described storage capacitor C2.

First group of switching tube described in this embodiment, second group of switching tube and the 3rd group of switching tube are MOSFET pipe, because MOSFET pipe carries body diode, can realize the two-way admittance effect of energy.And preferably but be not limited to, first group of switching tube Q1 with Q2 be connected photoelectrical coupler driving by control circuit; Second group of switching tube Q3, Q4, Q5, Q6 and the 3rd group of switching tube Q7, Q8, Q9, Q10 connect non-isolated drive IC by control circuit and drive.

During charge mode, control circuit 800 controls switching device shifter 600 and connects AC/DC non-bridge PFC and DC/AC inverter circuit 400, namely as shown in Figure 2, and relay R L1 adhesive; After control circuit 800 has detected civil power access, control circuit 800 can cut out inverter mode automatically, and civil power becomes high direct voltage through the power factor correction of AC/DC non-bridge PFC and DC/AC inverter circuit 400 and rectification, is carried in storage capacitor C2 two ends; When control circuit 800 detects that storage capacitor C2 two ends high pressure rises to 400V, control circuit 800 controls conducting and the cut-off of second group of switching tube Q3, Q4, Q5, Q6 by PWM mode, namely during Q3 and Q6 conducting, Q4 and Q5 ends, or during Q3 and Q6 cut-off, Q4 and Q5 conducting, the MOSFET pipe of upper and lower bridge arm is complementary in logic, the 400V voltage chopping at storage capacitor C2 two ends is become modulating wave, again through transformer T1 step-down, the rectification of first group of switching tube Q1 and Q2, become can accumulators 100 charge voltage.The present embodiment applies current mode push-pull configuration circuit, and under equal conditions, power output is nearly 3 times of single-ended reverse exciting structural circuit.Therefore, the electric current that accumulators 100 charges up to 30A, when adopting high current charges, can save the time that storage battery is full of.

Battery charge controller flow chart is see Fig. 4, when charge mode is opened, control circuit 800 can detect the voltage U bat at storage battery 100 two ends, if during the voltage U bat>10.5V at storage battery 100 two ends, control circuit 800 can the constant current charge of accumulators 100 about 30A; If during voltage U bat<10.5V, the trickle that can export 3A is that storage battery 100 charges, in case it is excessive and affect battery life to start electric current, to be checked when measuring the voltage U bat>=11.5V at storage battery 100 two ends, the charged electrical of storage battery 100 fails to be convened for lack of a quorum and transfers 30A to.When in setting-up time T1, control circuit 800 can detect the voltage difference delta U in storage battery 100 again, the i.e. variable quantity of the magnitude of voltage of storage battery 100 within the T1 time period, if during Δ U>Uth1, Uth1 is a value of initial setting, and control circuit 800 can regulate charging current to be 15A constant current charge, if during Δ U<Uth1, charging current is still 30A, when battery voltage detection circuit in circuit 800 to be controlled detects the voltage U bat>=14.4V at storage battery 100 two ends, it is that storage battery 100 charges that control circuit 800 can transfer 14.4V constant voltage charge to, when battery current detection circuit in circuit 800 to be controlled detects electric current I <=2A in storage battery 100, it is that storage battery 100 charges that control circuit 800 can transfer 13.8V floating charge to, when battery current detection circuit detects electric current I <=1A in storage battery 100, namely storage battery 100 is full of electricity.Same in setting-up time T2, control circuit 800 can detect the voltage difference in storage battery 100 again, the i.e. variation delta U2 of the magnitude of voltage of storage battery 100 within the T2 time period, as Δ U2>Uth2, Uth2 is a value of initial setting, and charging current can be adjusted to 10A constant current charge again, if during Δ U<Uth2, charging current is still 30A, when battery voltage detection circuit in circuit 800 to be controlled detects the voltage U bat>=14.4V at storage battery 100 two ends, it is that storage battery 100 charges that control circuit 800 can transfer 14.4V constant voltage charge to, when current detection circuit in circuit 800 to be controlled detects electric current I <=2A in storage battery 100, it is that storage battery 100 charges that control circuit 800 can transfer 13.8V floating charge to, when current detection circuit detects electric current I <=1A in storage battery 100, namely storage battery 100 is full of electricity.Same in setting-up time T3, control circuit 800 can detect the voltage difference in storage battery 100 again, the i.e. variation delta U3 of the magnitude of voltage of storage battery 100 within the T3 time period, as Δ U3>Uth3, Uth3 is a value of initial setting, and charging current can be adjusted to 5A constant current charge again, if during Δ U<Uth3, charging current is still 30A, when battery voltage detection circuit in circuit 800 to be controlled detects the voltage U bat>=14.4V at storage battery 100 two ends, it is that storage battery 100 charges that control circuit 800 can transfer 14.4V constant voltage charge to, when battery current detection circuit in circuit 800 to be controlled detects electric current I <=2A in storage battery 100, it is that storage battery 100 charges that control circuit 800 can transfer 13.8V floating charge to, when battery current detection circuit detects electric current I <=1A in storage battery 100, namely storage battery 100 is full of electricity.Constantly detected by the voltage of control circuit 800 pairs of storage batterys 100 or electric current and realize Intelligent adjustment charging current.During constant current charge, adopt single current loop control, maintain charging current constant, and Real-Time Monitoring cell voltage; After forwarding constant voltage charge to, adopt univoltage ring to control, maintain charging voltage constant, and Real-Time Monitoring battery current; After control circuit 800 detects that storage battery 100 is full of, can automatically stop as charge in batteries.

During inverter mode, control circuit 800 controls the relay R L1 shown in switching device shifter 600(Fig. 2) disconnect, control circuit 800 can detect storage battery 100 both end voltage Ubat, and whether detection civil power accesses simultaneously, as battery tension 10.5V<Ubat<15V, and when accessing without civil power, inversion work starts.First the direct voltage at storage battery 100 two ends is passed through the first filter capacitor C1 filtering, through the rectification of first group of switching tube, first group of switching tube Q1 and Q2 is controlled by the PWM mode of control circuit 800, Q1, Q2 operating phase differs 180 °, i.e. switching tube Q1 and switching tube Q2 conducting and cut-off in turn; Again through the boosting of transformer T1, and the rectification of second group of switching tube Q3, Q4, Q5, Q6 rises to 380V direct current and is carried in storage capacitor C2 two ends, the operating state of Q3, Q6 and Q4, Q5 is the same with charge mode, and namely the MOSFET pipe of upper and lower bridge arm is complementary in logic, alternate conduction and cut-off; When control circuit 800 detects that storage capacitor C2 both end voltage reaches 350V, control circuit 800 controls conducting and the cut-off of the 3rd group of switching tube Q7, Q8, Q9, Q10 by SPWM mode, Q7, Q8, Q9, Q10 form two groups of H bridges, adopt unipolar control, MOSFET pipe on upper and lower bridge arm is complementary in logic, alternate conduction and cut-off, be converted to alternating current by the direct voltage at storage capacitor C2 two ends, and exporting 220V sine wave alternating current is that AC load 500 is powered.

A kind of vehicle-mounted charge of the present invention and inversion Bidirectional variable-flow power-supply system are when inverter mode works, and user wants to be switched to and charges to storage battery 100, and midway is without the need to shutting down.Direct access civil power, after control circuit 800 detects city's signal of telecommunication, automatically can stop inverter mode, be transferred to charge mode; After civil power disconnects, power supply can stop charge mode, is restored to inverter mode; And in control circuit, be also provided with " EPS " button, when EPS button is pressed, this system can be given tacit consent to and have selected EPS mode of priority, behind incoming transport load 500 under this pattern, storage battery 100 and mains electricity input end 700, AC load 500 connects mains electricity input end 700 by relay R L1 adhesive, the drive singal that control circuit 800 controls inverter mode is blocked, and AC load 500 accesses mains-supplied by mains electricity input end 700; When control circuit 800 detects civil power power down, disconnect relay 600, remove the blockade to inverter mode drive singal, power-supply system is operated in inverter mode simultaneously, continues to power to AC load 500.

Preferably but be not limited to, described AC/DC non-bridge PFC and DC/AC inverter circuit are single-phase non-bridge PFC circuits, and described mains electricity input end is input as single-phase civil power.

Embodiment 2:

See accompanying drawing 3, embodiment 2 is with the difference of embodiment 1, first group of switching tube in embodiment 2, second group of switching tube and the 3rd group of switching tube are IGBT pipe, and be parallel with diode between the source electrode of IGBT pipe and drain electrode, and the drain electrode that the anode of diode connects the source electrode of IGBT pipe, the negative electrode of diode connects IGBT pipe, diode can realize the two-way flow of energy.Namely first group of switching tube includes the first switching tube Q11 and second switch pipe Q12, and the first switching tube Q11 is in parallel with the first diode D1, and second switch pipe Q12 is in parallel with the second diode D2; Second group of switching tube includes the 3rd switching tube Q13, the 4th switching tube Q14, the 5th switching tube Q15 and the 6th switching tube Q16, and is parallel with the 3rd diode D3, the 4th diode D4, the 5th diode D5 and the 6th diode D6 respectively with switching tube Q13, Q14, Q15, Q16; 3rd group of switching tube includes the 7th switching tube Q17, the 8th switching tube Q18, the 9th switching tube Q19 and the tenth switching tube Q20, and is parallel with the 7th diode D7, the 8th diode D8, the 9th diode D9 and the tenth diode D10 respectively with switching tube Q17, Q18, Q19, Q20.Operation principle, the connected mode of embodiment 2 are all identical with embodiment 1 with current flow control process, do not repeat them here.

Above-described execution mode, does not form the restriction to this technical scheme protection range.The amendment done within any spirit at above-mentioned execution mode and principle, equivalently to replace and improvement etc., within the protection range that all should be included in this technical scheme.

Claims (7)

1. vehicle-mounted charge and an inversion Bidirectional variable-flow power-supply system, is characterized in that, comprise
The storage battery be electrically connected successively, DC/DC two-way changing unit, storage capacitor, AC/DC non-bridge PFC and DC/AC inverter circuit, AC load;
Be parallel with mains electricity input end with described AC load two ends, between described mains electricity input end and described AC load, be provided with switching device shifter;
Control circuit, controls conducting and the disconnection of described switching device shifter, is charge mode during described switching device shifter conducting, is inverter mode when described switching device shifter disconnects;
Described DC/DC two-way changing unit, includes
Transformer, first group of switching tube, second group of switching tube;
The armature winding two ends of transformer connect first group of switching tube, and the secondary winding two ends of transformer connect second group of switching tube;
Described AC/DC non-bridge PFC and DC/AC inverter circuit, include the 3rd group of switching tube;
During inverter mode, described control circuit controls conducting and the cut-off of the 3rd group of switching tube by SPWM mode, and the high voltage direct current at storage capacitor two ends being converted to alternating current is that AC load is powered;
During charge mode, described control circuit controls conducting and the cut-off of first group of switching tube and second group of switching tube by PWM mode, the high voltage direct current at storage capacitor two ends is converted to low-voltage DC and charges a battery, and regulates charging current.
2. a kind of vehicle-mounted charge as claimed in claim 1 and inversion Bidirectional variable-flow power-supply system, is characterized in that: described first group of switching tube comprises the first switching tube, second switch pipe;
Described DC/DC two-way changing unit also includes first filter capacitor in parallel with storage battery two ends,
The first inductance be connected with primary winding centre cap;
The described first inductance other end connects the positive pole of storage battery, and described first switching tube is all connected the negative pole of described storage battery with the source electrode of second switch pipe, the armature winding two ends of described transformer connect the drain electrode of the drain electrode of the first switching tube, second switch pipe respectively.
3. a kind of vehicle-mounted charge as claimed in claim 1 and inversion Bidirectional variable-flow power-supply system, it is characterized in that: described second group of switching tube comprises the 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube, common port after the source electrode of described 3rd switching tube is connected with the drain electrode of the 5th switching tube is connected to again secondary winding one end of transformer, and the common port after the source electrode of the 4th switching tube is connected with the drain electrode of the 6th switching tube is connected to again the secondary winding other end of transformer;
The drain electrode of described 3rd switching tube and the drain electrode of the 4th switching tube are all connected to one end of described storage capacitor, and the source electrode of described 5th switching tube and the source electrode of the 6th switching tube are all connected to the other end of described storage capacitor.
4. a kind of vehicle-mounted charge as claimed in claim 1 and inversion Bidirectional variable-flow power-supply system, is characterized in that: described AC/DC non-bridge PFC and DC/AC inverter circuit, also includes the second inductance and the second filter capacitor;
Described 3rd group of switching tube comprises the 7th switching tube, the 8th switching tube, the 9th switching tube and the tenth switching tube,
The source electrode of described 7th switching tube is connected with the drain electrode of the 9th switching tube, and its common port is connected to again one end of described second inductance, and the described second inductance other end is connected to the positive input terminal of AC load;
The source electrode of the 8th switching tube is connected with the drain electrode of the tenth switching tube, and its common port is connected to again the negative input end of described AC load;
The drain electrode of described 7th switching tube and the drain electrode of the 8th switching tube are all connected to one end of described storage capacitor, and the source electrode of described 9th switching tube and the source electrode of the tenth switching tube are all connected to the other end of described storage capacitor.
5. a kind of vehicle-mounted charge as claimed in claim 1 and inversion Bidirectional variable-flow power-supply system, is characterized in that: described switching device shifter is relay.
6. as a kind of vehicle-mounted charge as described in arbitrary in Claims 1-4 and inversion Bidirectional variable-flow power-supply system, it is characterized in that: described first group of switching tube, second group of switching tube and the 3rd group of switching tube are MOSFET pipe or IGBT pipe, diode is parallel with, the drain electrode that the anode of diode connects the source electrode of IGBT pipe, the negative electrode of diode connects IGBT pipe between the source electrode of IGBT pipe and drain electrode.
7. a kind of vehicle-mounted charge as claimed in claim 1 and inversion Bidirectional variable-flow power-supply system, is characterized in that: described AC/DC non-bridge PFC and DC/AC inverter circuit are single-phase non-bridge PFC circuits, and described mains electricity input end is input as single-phase civil power.
CN201410555540.6A 2014-10-17 2014-10-17 Vehicle-mounted charging and inversion bidirectional AC power supply system CN105576731A (en)

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Cited By (5)

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CN105790429A (en) * 2016-04-28 2016-07-20 上海电机学院 Low-power uninterrupted power source based on bidirectional DC-DC converter and control method thereof
CN106160143A (en) * 2016-07-22 2016-11-23 北京新能源汽车股份有限公司 The vehicle-mounted charging device of electric automobile and electric automobile
CN106300585A (en) * 2016-08-31 2017-01-04 苏州迈力电器有限公司 Power frequency inversion and charged integrated
CN106685208A (en) * 2017-01-24 2017-05-17 北京新能源汽车股份有限公司 Bridgeless power factor correction (PFC) circuit, vehicle-mounted charger and electric automobile
CN107097649A (en) * 2017-05-31 2017-08-29 北京新能源汽车股份有限公司 A kind of vehicle-mounted bidirectional charger, vehicle-mounted bidirectional power supply method and device

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Application publication date: 20160511