CN104578253B - High-frequency triangular transformation technology-based electric vehicle motor driving DC/DC transformation device - Google Patents
High-frequency triangular transformation technology-based electric vehicle motor driving DC/DC transformation device Download PDFInfo
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- CN104578253B CN104578253B CN201410742282.2A CN201410742282A CN104578253B CN 104578253 B CN104578253 B CN 104578253B CN 201410742282 A CN201410742282 A CN 201410742282A CN 104578253 B CN104578253 B CN 104578253B
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- 238000005516 engineering process Methods 0.000 title abstract description 15
- 230000001131 transforming Effects 0.000 title abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000001360 synchronised Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 8
- 210000003284 Horns Anatomy 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000000087 stabilizing Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/022—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
Abstract
The invention relates to a high-frequency triangular transformation technology-based electric vehicle motor driving DC/DC transformation device, aims to solve the problems of DC/DC transformation from a high-voltage battery pack to a low-voltage battery during motor driving and high-voltage battery charging in an existing electric vehicle technology, and provides a novel electric vehicle motor driving DC/DC transformation device, which comprises a DC/DC transformation device, a motor driving inverter bridge and a 22V AC charging interface circuit. According to the device, a high-frequency triangular transformation technology can be implemented; a driving motor has a 12V low-voltage power output function, so that power can be supplied to vehicle-mounted equipment; the function of isolating and charging a power battery of an electric vehicle can be realized.
Description
Technical field
The present invention relates to motor in electric automobile drives and battery charging field, drive high frequency particularly to motor in electric automobile
Triangle becomes DC/DC converting means.
Background technology
At present, electric vehicle engineering develops rapidly, and electric automobile market grows stronger day by day, but motor in electric automobile drives
Device adopts conventional topological structure mostly, lacks innovation, and triangle becomes technology and is applied already in power frequency field, and in height
Also unused in the range of frequency, high frequency triangle change technology is applied to motor in electric automobile and drives in DC/DC converter technique, can
Realize the control decoupling of " One In and Two Out ", thus realizing hardware resource integration.Be conducive to technological innovation and the length of electric automobile
Foot develops.
Content of the invention
In order to solve Motor drive in existing electric vehicle engineering, high-tension battery charges, and high-tension battery group is to A-battery
DC/DC transformation problem, the present invention provides a kind of motor in electric automobile with high frequency triangle changes technology to drive DC/DC change to change the outfit
Put.This device is that a kind of new motor in electric automobile drives topological structure so that triangle change technology can apply to high frequency condition
Under, thus realizing the control decoupling of " One In and Two Out ", by adjusting dutycycle, realize controlled rectifier technology.
In order to achieve the above object, the present invention adopts following technical proposals：
The present invention provides a kind of motor in electric automobile to drive DC/DC converting means, and described device includes permagnetic synchronous motor
(1), Motor drive inverter bridge (2), Support Capacitor (3), battery side half-bridge converter (4), preliminary filling electric control module (5), high pressure
Battery pack (6), rectification circuit (7), charged side Support Capacitor (8), charged side half-bridge converter (9), lower pressure rectifier circuit (10),
Three angle transformers (11).
Compared with prior art, the electronic vapour of the high frequency triangle change technology with 220VAC charge function that the present invention provides
Vehicle motor drives DC/DC converting means, realizes hardware resource integration, improves motor-driven performance.The present invention can be real
Triangle under existing high frequency condition becomes technology；Motor can be made to have low-tension supply 12V output function, thus realizing to vehicle-mounted
The power supply of equipment；Can realize isolating charge function to electric automobile power battery.
Brief description
Fig. 1 is that the motor in electric automobile with charge function high frequency triangle change technology that the present invention provides drives DC/DC to become
The topological structure schematic diagram of changing device.
In figure：1 is permagnetic synchronous motor, and 2 is Motor drive inverter bridge, and 3 is Support Capacitor, and 4 is battery side single-phase inversion
Bridge, 5 is preliminary filling electric control module, and 6 is high-tension battery group, and 7 is rectification circuit, and 8 is charged side Support Capacitor, and 9 is charged side list
Phase inverter bridge, 10 is lower pressure rectifier circuit, and 11 is three angle transformers.
Specific embodiment
Below, in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As shown in figure 1, the present invention provides a kind of motor in electric automobile to drive DC/DC converting means, described device is included forever
Magnetic-synchro motor 1, Motor drive inverter bridge 2, Support Capacitor 3, battery side half-bridge converter 4, preliminary filling electric control module 5, high pressure
Battery pack 6, rectification circuit 7, charged side Support Capacitor 8, charged side half-bridge converter 9, lower pressure rectifier circuit 10, three angle transformers
11.
It is in series with preliminary filling electric control module 5 in described high-tension battery group 6；It is parallel with battery side in described high-tension battery group 6
Half-bridge converter 4, Support Capacitor 3, Motor drive inverter bridge 2；Motor drive inverter bridge 2 connects permagnetic synchronous motor 1；Described three
Angle transformer 11 includes A coil, B coil, C coil；Described battery side half-bridge converter 4 connects the A coil of three angle transformers 11；
The B coil of described three angle transformers 11 connects charged side half-bridge converter 9；Charged side half-bridge converter 9, charged side Support Capacitor
8 are in parallel with rectification circuit 7 three；220VAC charging inlet is connected with rectification circuit 7；The C line of described three angle transformers 11
Circle connects lower pressure rectifier circuit 10.
When normal vehicle operation：Connect preliminary filling electric control module 5, charge closing side half-bridge converter 9；High-tension battery group
6 drive permagnetic synchronous motor 1 by Motor drive inverter bridge 2, and meanwhile, battery side half-bridge converter 4 carries out high frequency single-phase inversion,
There is provided electric energy by three angle transformers 11 to charged side half-bridge converter 9 and lower pressure rectifier circuit 10, now, using high frequency simultaneously
Former limit A of three angle transformers 11 and the leakage inductance of secondary C, by controlling the duty cycle of switching of battery side half-bridge converter 4, can adjust
The output voltage of section lower pressure rectifier circuit 10 or output current；
Work as vehicle parking, when charging using 220VAC：Connect the switch 51 of preliminary filling electric control module 5,220VAC power supply joins
Connect the 220VAC charging inlet on rectification circuit 7,220V single-phase alternating current is made into direct current by rectification circuit 7, then pass through charged side
Half-bridge converter 9 high-frequency inversion, high-frequency alternating current is sent in high frequency three angle transformer 11, then the electric energy after converting is simultaneously from low
Voltage rectifier 10 and battery side half-bridge converter 4 export, and realize the charging to high-tension battery group 6 and 220VAC to low pressure simultaneously
The DC/DC conversion of 12V.
Further, in described converting means：By adjusting the dutycycle of charged side half-bridge converter 9, using high frequency
The leakage inductance of the primary and secondary side of three angle transformers 11, can adjust output voltage or the output current of lower pressure rectifier circuit 10.
Former limit refers to the power flow input side of transformer equivalent generator port, and secondary is transformer equivalent generator port
Power flow outlet side.
Further, in described converting means, during design triangle transformer 11, the turn ratio of the every winding of adjustment, make
During charged side half-bridge converter 9 work, the peak-to-peak value of the battery side secondary A voltage open circuit of three angle transformers 11 is high-tension battery group
0.9 times of 6 minimum operating voltages, thus realize first, when 220VAC carries out DC/DC isolated variable to low pressure 12V, closing electricity
During the half-bridge converter 4 of pond side, the charge function to high-tension battery group 6 for the 220VAC can be closed.
Above-mentioned items winding refers to winding coil A, B, C of three angle transformers 11.
When connecting battery side half-bridge converter 4,220VAC power supply charges to high-tension battery group 6；Disconnect (closing) battery
During the half-bridge converter 4 of side, 220VAC power supply does not charge to high-tension battery group 6.
Further, in described converting means, using the leakage inductance of the primary and secondary side of high frequency three angle transformer 11, filling
In each cycle of electric side half-bridge converter 9 ON operation, the dutycycle of Synchronization Control battery side half-bridge converter 4, battery side
Half-bridge converter 4 realizes synchronous rectified boost chop control, reaches the purpose to the controlled charging of high-tension battery group 6.
Above-mentioned Synchronization Control refers to, while input side voltage raises, single-phase inverter 4 work to be simultaneously participated in, and carry out
Leakage inductance energy storage, because pump comes into force really, makes inverter bridge 4 short circuit.
Further, in described converting means, certain pair of horns arm of charged side half-bridge converter 9 (in Fig. 1 IGBT91 and
IGBT94 or IGBT92 and IGBT93) when simultaneously turning on state, the upper brachium pontis of battery side half-bridge converter 4 two or lower brachium pontis with
When conducting, realize secondary A short circuit, energy storage is realized by former limit B of high frequency three angle transformer 11 and the leakage inductance of secondary A, reach
The all IGBT of battery side half-bridge converter 4 are closed, by the leakage inductance of the primary and secondary side of three angle transformers 11 during duty cycle time
Electric current can not be mutated this principle, anti-and voltage pump rise realized by diode by IGBT, single-phase by Synchronization Control battery side
Dutycycle is closed in inverter bridge 4 conducting, is realizing achieving to high-tension battery while 220VAC converts to the DC/DC of low pressure 12V
The charging of group.
Above-mentioned duty cycle time is automatically adjusted by closed-loop control.
The upper brachium pontis of two of battery side half-bridge converter 4 refers to IGBT41 and IGBT42 in Fig. 1, and two lower brachium pontis refer in Fig. 1
IGBT43 and IGBT44.As IGBT41 and IGBT42 or IGBT43 and IGBT44 alternation in Fig. 1, the purpose of do so is
Inverter bridge is made to generate heat uniformly, it is to avoid single inverter bridge is overheated.
Further, in described converting means, the inverse switch frequency of battery side half-bridge converter 4 is 20kHz；Charge
The inverse switch frequency of side half-bridge converter 9 high-frequency inversion is 20kHz.
Further, in described converting means, the positive electrode bus of described high-tension battery group 6 are in series with preliminary filling electric control
Module 5, preliminary filling electric control module 5 includes switching 51, resistance 52；It is parallel between the both positive and negative polarity bus of described high-tension battery group 6
Battery side half-bridge converter 4, Support Capacitor 3, Motor drive inverter bridge 2；Motor drive inverter bridge 2 includes an IGBT21, the
Two IGBT22, the 3rd IGBT23, the 4th IGBT24, the 5th IGBT25, the 6th IGBT26, an IGBT21 and the 4th IGBT24 phase
Series connection, the 2nd IGBT22 and the 5th IGBT25 is in series, and the 3rd IGBT23 and the 6th IGBT26 are in series, the IGBT of three groups of series connection
It is connected in parallel between the both positive and negative polarity bus of high-tension battery group 6；Motor drive inverter bridge 2 connects permagnetic synchronous motor 1；Described battery side
Half-bridge converter 4 includes the 7th IGBT41, the 8th IGBT43, the 9th IGBT42, the tenth IGBT44, the 7th IGBT41 and the 8th
IGBT43 is in series, and the 9th IGBT42 and the tenth IGBT44 are in series, and the IGBT of two groups of series connection is just being connected in parallel on high-tension battery group 6
Between negative electrode bus；Described three angle transformers 11 are made up of A coil, B coil and C coil；Described battery side half-bridge converter 4 is even
Connect the A coil of three angle transformers 11, described A coil one end is connected to the point S1 between the 7th IGBT41 and the 8th IGBT43, institute
State the A coil other end and be connected to the point S2 between the 9th IGBT42 and the tenth IGBT44；Described charged side half-bridge converter 9 includes
11st IGBT91, the 12nd IGBT92, the 13rd IGBT93, the 14th IGBT94, the 11st IGBT91 and the 13rd
IGBT93 is in series, and the 12nd IGBT92 and the 14th IGBT94 are in series, and the IGBT of two groups of series connection is in parallel；Described triangle becomes
The B coil of depressor 11 connects charged side half-bridge converter 9, and described B coil one end is connected to the 11st IGBT91 and the 13rd
Point S5 between IGBT93, the described B coil other end is connected to the point S6 between the 12nd IGBT92 and the 14th IGBT94；Institute
State charged side half-bridge converter 9, charged side Support Capacitor 8 and rectification circuit 7 three to be in parallel；It is connected with rectification circuit 7
220VAC charging inlet；
The C coil of described three angle transformers 11 connects lower pressure rectifier circuit 10.
Further, in described converting means, described lower pressure rectifier circuit 10 includes the first diode the 101, the 2nd 2
Pole pipe 102, the 3rd diode 103, the 4th diode 104；First diode 101 and the second diode 102 are in series, and the three or two
Pole pipe 103 and the 4th diode 104 are in series, and two after series connection group diode is in parallel；The C coil of described three angle transformers 11
One end connect point S3 between the first diode 101 and the second diode 102, the other end of C coil connects the 3rd diode
103 and the 4th point S4 between diode 104.
Embodiment 1
As shown in figure 1, the present invention provides a kind of electric automobile electricity with 220VAC charge function high frequency triangle change technology
Machine drives DC/DC converting means, and described device includes permagnetic synchronous motor 1, Motor drive inverter bridge 2, Support Capacitor 3, battery
Side half-bridge converter 4, preliminary filling electric control module 5, high-tension battery group 6, rectification circuit 7, charged side Support Capacitor 8, charged side list
Phase inverter bridge 9, lower pressure rectifier circuit 10, three angle transformers 11.
When normal vehicle operation：High-tension battery group 6 drives permagnetic synchronous motor 1, motor by Motor drive inverter bridge 2
Inverter bridge 2 controlled motor 1 four is driven mutually to limit work, battery side half-bridge converter 4 carries out high frequency single-phase inversion (inverse switch simultaneously
Frequency 20kHz), provide electric energy to charged side half-bridge converter 9 and lower pressure rectifier circuit 10 by three angle transformers 11 simultaneously, by
Be in open-circuit condition in charged side half-bridge converter 9, now can directly charge closing side half-bridge converter 9 so as to be operated in
Unloaded rectification state.Now, using former limit A of high frequency three angle transformer 11 and the leakage inductance of secondary C, by controlling battery side
The duty cycle of switching of half-bridge converter 4, can adjust output voltage or the output current of lower pressure rectifier circuit 10.By closed loop control
(in figure DC12V low pressure, reduces dutycycle to system when a current is large, and when electric current hour increases dutycycle, this process is to automatically adjust
) realize the voltage stabilizing of lower pressure rectifier circuit or current stabilization output, thus realizing the function that voltage DC isolation becomes low-voltage direct.
Motor drive inverter bridge 2 controlled motor 1 four mutually limits work and refers to, vehicle certainly will have advance, retrogressing, send out when running
Electricity, brake these four states, thus vehicle be accomplished by motor 1 using characteristic all can normal work in four quadrants.
When vehicle parking utilizes 220VAC to charge：220VAC power supply couples rectification circuit 7, and rectification circuit 7 is mono- by 220V
Cross streams electricity is made into direct current, then passes through charged side half-bridge converter 9 high-frequency inversion (inverse switch frequency 20kHz), and high frequency is handed over
Stream electricity is sent in high frequency three angle transformer 11, then the electric energy after converting is simultaneously from lower pressure rectifier circuit 10 and battery side single-phase inversion
Bridge 4 (that is, high-tension battery side) exports, and realizes the charging to high-tension battery group 6 and 220VAC simultaneously and the DC/DC of low pressure 12V is become
Change, by adjusting the dutycycle of charged side half-bridge converter 9, using former limit B of high frequency three angle transformer 11 and the leakage of secondary C
Sense, can adjust output voltage or the output current of lower pressure rectifier circuit 10.By closed loop (refer to DC12V and high-tension battery group this
Individual loop, does not have this side of charging inlet circuit) control realization voltage stabilizing or current stabilization output, thus realize voltage DC isolation step-down
The function of straightening stream.
Above-mentioned voltage stabilizing or current stabilization output include exporting to the voltage output of high-tension battery charging and the electric current of low pressure 12V.Logical
Voltage stabilizing is realized in overvoltage closed-loop control, realizes current stabilization by electric current loop closed-loop control.
Now, its open-circuit voltage of high-tension battery side due to exporting as another secondary A is uncontrollable, therefore can not lead to
Cross simple rectification and obtain power, its specific implementation method is as follows：
1st, during design triangle transformer 11, the circle of the every winding (coil windings A, coil windings B, coil windings C) of adjustment
Number ratio, when so that charged side half-bridge converter 9 is worked, the peak-to-peak value of battery side secondary A voltage open circuit is the minimum work of high-tension battery group 6
Make voltage 0.9 times, thus realize first, when 220VAC carries out DC/DC isolated variable to low pressure 12V, closing by trigger
When closing battery side half-bridge converter 4, (half-bridge converter is in uncontrollable rectification due to the presence of itself inverse parallel fly-wheel diode
Bridge like state), the charge function to high-tension battery group for the 220VAC can be closed.
2nd, utilize the leakage inductance of the primary and secondary side of high frequency three angle transformer 11, in charged side half-bridge converter 9 ON operation
Each cycle in, the dutycycle of Synchronization Control battery side half-bridge converter 4, battery side half-bridge converter 4 realizes synchronous rectification
Boost chopper controls, and reaches the purpose to the controlled charging of high-tension battery group 6.That is, in certain pair of horns arm of charged side half-bridge converter 9
When simultaneously turning on state, the upper brachium pontis (41,42) of battery side half-bridge converter 4 two or lower brachium pontis (43,44) simultaneously turn on, and realize
Secondary short circuit, realizes energy storage by former limit B of high frequency three angle transformer 11 and the leakage inductance of secondary A, when reaching duty cycle time
Close all IGBT of battery side half-bridge converter 4, can not be dashed forward by the electric current of the leakage inductance of the primary and secondary side of three angle transformers 11
Become this principle, voltage pump rise is realized by the anti-simultaneously diode of IGBT, therefore, finally can be single-phase inverse by Synchronization Control battery side
Become bridge 4 conducting and close dutycycle, achieve to high-tension battery while realizing and 220VAC is converted to the DC/DC of low pressure 12V
The charging of group.
Duty cycle time is automatically adjusted by closed-loop control.
Certain pair of horns arm of charged side half-bridge converter 9 refers to IGBT91 and IGBT94 in Fig. 1, or IGBT92 and IGBT93.
The upper brachium pontis of battery side half-bridge converter 4 two refers to IGBT41 and IGBT42, and lower brachium pontis refers to IGBT43 and IGBT44.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.Every
The impartial change done according to present invention and modification, are encompassed by the scope of the claims of the present invention.
Claims (6)
1. a kind of motor in electric automobile drive DC/DC converting means it is characterised in that：Described device includes permagnetic synchronous motor
(1), Motor drive inverter bridge (2), Support Capacitor (3), battery side half-bridge converter (4), preliminary filling electric control module (5), high pressure
Battery pack (6), rectification circuit (7), charged side Support Capacitor (8), charged side half-bridge converter (9), lower pressure rectifier circuit (10),
Three angle transformers (11)；
It is in series with preliminary filling electric control module (5) on described high-tension battery group (6)；It is parallel with battery on described high-tension battery group (6)
Side half-bridge converter (4), Support Capacitor (3), Motor drive inverter bridge (2)；Motor drive inverter bridge (2) connects permanent magnet synchronous electric
Machine (1)；Described three angle transformers (11) include A coil, B coil, C coil；Described battery side half-bridge converter (4) connects triangle
The A coil of transformer (11)；The B coil of described three angle transformers (11) connects charged side half-bridge converter (9)；Charged side is single-phase
Inverter bridge (9), charged side Support Capacitor (8) and rectification circuit (7) three are in parallel；Rectification circuit is connected with 220VAC on (7)
Charging inlet；The C coil of described three angle transformers (11) connects lower pressure rectifier circuit (10)；
When normal vehicle operation：Connect preliminary filling electric control module (5), charge closing side half-bridge converter (9)；High-tension battery group
(6) permagnetic synchronous motor (1) is driven by Motor drive inverter bridge (2), meanwhile, battery side half-bridge converter (4) carries out high frequency
Single-phase inversion, provides electricity to charged side half-bridge converter (9) and lower pressure rectifier circuit (10) by three angle transformers (11) simultaneously
Can, now, using former limit A of three angle transformers (11) and the leakage inductance of secondary C, by controlling battery side half-bridge converter (4)
Duty cycle of switching, adjusts output voltage or the output current of lower pressure rectifier circuit (10)；
Work as vehicle parking, when charging using 220VAC：220VAC power supply connects the 220VAC charging inlet on rectification circuit (7),
220V single-phase alternating current is made into direct current by rectification circuit (7), then passes through charged side half-bridge converter (9) high-frequency inversion, by high frequency
Alternating current is sent in three angle transformers (11), then the electric energy after converting is simultaneously single-phase inverse from lower pressure rectifier circuit (10) and battery side
Become bridge (4) output, realize charging of high-tension battery group (6) is converted to the DC/DC of low pressure 12V with 220VAC simultaneously；
By adjusting the dutycycle of charged side half-bridge converter (9), using the leakage of the primary and secondary side of three angle transformers (11)
Sense, adjusts output voltage or the output current of lower pressure rectifier circuit (10)；
Using the leakage inductance of the primary and secondary side of three angle transformers (11), charged side half-bridge converter (9) ON operation each
In cycle, the dutycycle of Synchronization Control battery side half-bridge converter (4), battery side half-bridge converter (4) realizes synchronous rectification liter
Pressure chop control, reaches the purpose to the controlled charging of high-tension battery group (6).
2. converting means according to claim 1 it is characterised in that：During design triangle transformer (11), adjustment every around
The turn ratio of group, when so that charged side half-bridge converter (9) is worked, the battery side secondary A voltage open circuit of three angle transformers (11)
Peak-to-peak value is 0.9 times of the minimum operating voltage of high-tension battery group (6), thus realizing first carrying out DC/ in 220VAC to low pressure 12V
During DC isolated variable, when closing battery side half-bridge converter (4), the charging work(to high-tension battery group (6) for the 220VAC can be closed
Energy.
3. converting means according to claim 1 it is characterised in that：In certain pair of horns arm of charged side half-bridge converter (9)
When simultaneously turning on state, the upper brachium pontis of battery side half-bridge converter (4) two or lower brachium pontis simultaneously turn on, and realize secondary A short circuit, lead to
The leakage inductance of former limit B and secondary A of crossing three angle transformers (11) realizes energy storage, closes battery side when reaching duty cycle time single-phase
The all IGBT of inverter bridge (4), can not be mutated this principle by the electric current of the leakage inductance of the primary and secondary side of three angle transformers (11),
Voltage pump rise is realized by the anti-simultaneously diode of IGBT, is turned on by Synchronization Control battery side half-bridge converter (4) and close dutycycle,
Realizing while 220VAC converts, realizing the charging to high-tension battery group to the DC/DC of low pressure 12V.
4. converting means according to claim 1 it is characterised in that：The inverse switch frequency of battery side half-bridge converter (4)
Rate is 20kHz；The inverse switch frequency of charged side half-bridge converter (9) high-frequency inversion is 20kHz.
5. converting means according to claim 1 it is characterised in that：Go here and there in the positive electrode bus of described high-tension battery group (6)
It is associated with preliminary filling electric control module (5), preliminary filling electric control module (5) includes switch (51), resistance (52)；Described high-tension battery group
(6) it is parallel with battery side half-bridge converter (4), Support Capacitor (3), Motor drive inverter bridge (2) between both positive and negative polarity bus；Electricity
Machine drives inverter bridge (2) to include an IGBT (21), the 2nd IGBT (22), the 3rd IGBT (23), the 4th IGBT (24), the 5th
IGBT (25), the 6th IGBT (26), an IGBT (21) and the 4th IGBT (24) is in series, the 2nd IGBT (22) and the 5th
IGBT (25) is in series, and the 3rd IGBT (23) and the 6th IGBT (26) are in series, and the IGBT of three groups of series connection is connected in parallel on high-tension battery
Between the both positive and negative polarity bus of group (6)；Motor drive inverter bridge (2) connects permagnetic synchronous motor (1)；Described battery side single-phase inversion
Bridge (4) includes the 7th IGBT (41), the 8th IGBT (43), the 9th IGBT (42), the tenth IGBT (44), the 7th IGBT (41) and the
Eight IGBT (43) are in series, and the 9th IGBT (42) and the tenth IGBT (44) are in series, and the IGBT of two groups of series connection is connected in parallel on high-tension electricity
Between the both positive and negative polarity bus of pond group (6)；Described three angle transformers (11) are made up of A coil, B coil and C coil；Described battery side
Half-bridge converter (4) connects the A coil of three angle transformers (11), and described A coil one end is connected to the 7th IGBT (41) and the 8th
Point (S1) between IGBT (43), the described A coil other end is connected to the point between the 9th IGBT (42) and the tenth IGBT (44)
(S2)；Described charged side half-bridge converter (9) includes the 11st IGBT (91), the 12nd IGBT (92), the 13rd IGBT (93),
14th IGBT (94), the 11st IGBT (91) and the 13rd IGBT (93) is in series, the 12nd IGBT (92) and the 14th
IGBT (94) is in series, and the IGBT of two groups of series connection is in parallel；It is single-phase inverse that the B coil of described three angle transformers (11) connects charged side
Become bridge (9), described B coil one end is connected to the point (S5) between the 11st IGBT (91) and the 13rd IGBT (93), described B line
The circle other end is connected to the point (S6) between the 12nd IGBT (92) and the 14th IGBT (94)；Described charged side half-bridge converter
(9), charged side Support Capacitor (8) and rectification circuit (7) three are in parallel；Rectification circuit is connected with 220VAC charging on (7)
Mouthful；The C coil of described three angle transformers (11) connects lower pressure rectifier circuit (10).
6. converting means according to claim 5 it is characterised in that：Described lower pressure rectifier circuit (10) includes the one or two pole
Pipe (101), the second diode (102), the 3rd diode (103), the 4th diode (104)；First diode (101) and second
Diode (102) is in series, and the 3rd diode (103) and the 4th diode (104) are in series, two after series connection group diode phase
In parallel；Described three angle transformers（11）C coil one end connect the first diode (101) and the second diode (102) between
Point S3, the other end of C coil connects the point S4 between the 3rd diode (103) and the 4th diode (104).
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| CN108155805B (en) * | 2016-12-02 | 2019-11-22 | 比亚迪股份有限公司 | The control method of electric car and its DC-DC converter and DC-DC converter |
| FR3068544B1 (en) * | 2017-06-28 | 2019-07-26 | Valeo Equipements Electriques Moteur | VOLTAGE CONVERTER, METHOD FOR MANUFACTURING SUCH VOLTAGE CONVERTER AND ASSEMBLY OF MAIN MODULE AND TERMINAL MODULE FOR FORMING SUCH VOLTAGE CONVERTER |
| CN109861526B (en) * | 2019-02-27 | 2021-05-07 | 中国第一汽车股份有限公司 | DC/DC control method |
| CN111446857A (en) * | 2020-04-13 | 2020-07-24 | 威睿电动汽车技术(宁波)有限公司 | C LL C bidirectional DC-DC converter and control method |
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