CN108429453A - On-board high-voltage inversion conversion equipment and control method - Google Patents
On-board high-voltage inversion conversion equipment and control method Download PDFInfo
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- CN108429453A CN108429453A CN201810125328.4A CN201810125328A CN108429453A CN 108429453 A CN108429453 A CN 108429453A CN 201810125328 A CN201810125328 A CN 201810125328A CN 108429453 A CN108429453 A CN 108429453A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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Classifications
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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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- H02J2007/0067—
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of on-board high-voltage inversion conversion equipment and control methods, wherein the on-board high-voltage inversion conversion equipment includes conversion circuit；The conversion circuit includes concatenated DC DC circuits and DC AC circuits.The on-board high-voltage inversion conversion equipment of the present invention is capable of providing and is used to user compared to the alternating current 220V power supply of low pressure inversion conversion equipment higher power and efficiency.Meanwhile prime Buck circuits are directly used in inner topology, the topological structure of rear class inversion cancels transformer coupled mode, reduces control complexity and cost per unit；By the vehicle-mounted electric discharge socket that two kinds of different capacities are arranged in vehicle end, it is possible to provide two kinds of different capacity AC powers for users to use, can meet vehicle V2V functions.
Description
Technical field
The invention belongs to new-energy automobile control technology fields, are related to new energy commercial car on-board high-voltage inversion conversion equipment
And control method.
Background technology
Currently, vehicle-mounted low pressure inversion conversion equipment is widely used to traditional middle-to-high end car, solves user and driving a vehicle
It needs to be handled official business and entertained etc. power demand using 220V alternating currents in the process.In recent years, with new-energy automobile
The extensive universal and popularization of industry, large quantities of vehicle enterprises start to join in new-energy automobile research and development and produce, and new-energy automobile
Different from orthodox car, there are two batteries for its own：High voltage power battery and low tension battery.So for new energy vapour
Vehicle 220V exchanges electricity output can provide new energy source, i.e., provide high voltage direct current from high voltage power battery, pass through high pressure
Inversion conversion equipment is converted to 220V alternating currents, solves user and exchanges power demand.
It is had as a drawback that using conventional low way to take power compared to high voltage power battery electricity-taking mode is used：(1) turn
It changes less efficient.For new-energy automobile, such as use traditional vehicle low pressure inversion scheme, then it need to be by DC/DC by high voltage power battery
After voltage is converted to low pressure, then by low pressure inversion be 220V alternating currents.Centre increases the link of DC/DC conversions, and then causes
Have lost a part of power；(2) available alternating current discharge power is relatively low.For traditional vehicle low pressure inversion scheme, in order to prevent
Overdischarge damages low tension battery or low tension battery power shortage, and general available power is no more than 200W.And high voltage power
Battery capacity is far longer than low tension battery, and the discharge current ability that can be born is stronger, therefore uses high-voltage inverted scheme theoretical
On can be substantially improved exchange electricity consumption needed for power, further meet user power utilization demand；(3) cost per unit and inside are improved
Control complexity.Traditional Vehicular inverter inner topology is by transformer coupled form, by the direct current after voltage stabilizing
Pressure inversion first is alternating current, carries out carrying out rectifying and voltage-stabilizing again after transformation by transformer, then carries out inversion filtering output.
Significantly increase control complexity and component number.
For new energy passenger car, existing two-way vehicle-mounted charging device has the alternating current discharge function.But for
For new energy commercial car, charge for high voltage power battery due to being all made of direct current charge technology at present, so new energy is commercial
Vehicle does not configure vehicle-mounted charging device, therefore can be supplied to the high-voltage inverted conversion equipment of user without providing.For high-voltage inverted turn
The control program of changing device temporarily provides definite scheme without corresponding patent both at home and abroad at present, belongs to space state.
Invention content
Purpose of the present invention is to propose a kind of on-board high-voltage inversion conversion equipment and control method, blank has been filled up.
The present invention solves technical problem and adopts the following technical scheme that：A kind of on-board high-voltage inversion conversion equipment comprising turn
Change circuit；
The conversion circuit includes concatenated DC-DC circuit and DC-AC circuits；
The DC-DC circuit includes capacitance C1, diode D1 and the capacitance C2 of parallel connection；In capacitance C1 and diode D1 cathode
Between circuit on be provided with the source electrode of switching device S1, the switching device S1 and be connected to diode D1 cathode, the switch
The drain electrode of device S1 is connected to one end of capacitance C1；It is provided with inductance on circuit between capacitance C2 and diode D1 cathode
L1；The both ends of the capacitance C1 are DC-DC input terminals；
The DC-AC circuits include switching device S2, switching device S3, switching device S4 and switching device S5；It is described to open
The drain electrode for closing device S2 is connected to one end of the capacitance C2, and the source electrode of the switching device S2 is connected to the leakage of switching device S3
Pole, the source electrode of the switching device S3 are connected to the other end of the capacitance C2；The drain electrode of the switching device S4 is connected to institute
One end of capacitance C2 is stated, the source electrode of the switching device S4 is connected to the drain electrode of switching device S5, the source of the switching device S5
Pole is connected to the other end of the capacitance C2；The source electrode of the switching device S2 is connected to by concatenated inductance L2 and capacitance C3
The both ends of the source electrode of the switching device S4, capacitance C3 are DC-AC leading-out terminals.
Optionally, the on-board high-voltage inversion conversion equipment further includes control system, and the control system includes voltage
Detection unit, current detecting unit, temperature detecting unit, master controller, SPWM controllers, the first driving unit and the second driving
Unit；
The voltage detection unit and the equal signal of current detecting unit, temperature detecting unit are connected to the master controller,
For the voltage signal, current signal and temperature signal of detection to be transferred to the master controller, the master controller passes through CAN
Bus is connect with HCU, and the master controller is connect with the first driving unit signal, with by first driving unit to conversion
Circuit carries out break-make control；The master controller is also connect by SPWM controllers with the second driving unit, to pass through described
Two driving units control DC-AC circuits.
Optionally, the voltage detection unit includes input voltage sensor VS1 and output voltage sensor VS2；It is described
Input voltage sensor VS1 is parallel to capacitance C1, believes for detecting DC bus input voltage, and by DC bus input voltage
Number Vin passes to master controller；The output voltage sensor VS2 is parallel to capacitance C3, will for detecting ac output voltage
Ac output voltage signal Vo after rectification passes to master controller.
Optionally, the current detecting unit includes input current sensor IS1 and output current sensor IS2；It is described
DC bus input current signal Iin is passed to master by input current sensor IS1 for detecting DC bus input current
Controller；The output current sensor IS2 is for detecting ac output current, and by the ac output current signal after rectification
Io is to master controller.
Optionally, the temperature detecting unit is for detecting the radiator temperature that power device is installed, and temperature is believed
Number T passes to master controller.
Optionally, master controller is used for DC bus input voltage signal Vin, DC bus input current signal Iin,
Ac output voltage signal Vo, ac output current signal Io and temperature signal T and built-in rotection thresholds multilevel iudge, for event
Barrier judges.
Optionally, first driving unit is used to convert the pwm control signal that master controller exports to driving switch
The drive signal DS1 of device S1；Second driving unit is used to convert SPWM controllers output SPWM control signals to drive
Dynamic switching device S2, switching device S3, switching device S4 and the drive signal DS2 of switching device S5, drive signal DS3, driving
Signal DS4 and drive signal DS5.
Optionally, the on-board high-voltage inversion conversion equipment further includes high voltage power battery, HCU, instrument and at least one
A vehicle-mounted electric discharge socket；
The high voltage power battery is connected to the DC-DC input terminals of the conversion circuit, for being provided to conversion circuit
High voltage direct current；
The vehicle-mounted electric discharge socket is used for providing 220V AC powers to user；
Be both provided with electric discharge on each vehicle-mounted electric discharge socket and enable switch key, discharge enabled switch by rigid line with
HCU connections, if user, which presses electric discharge, enables switch key, the conducting of HCU measure loops indicates that user's request at this time uses the vehicle
Placing electrical socket discharges；It is resetted if electric discharge enables switch key, HCU measure loops disconnect, then it represents that user stops asking at this time
It asks and uses the socket, and stop discharging；
HCU is communicated by CAN bus with instrument.
The present invention solves technical problem and also adopts the following technical scheme that：A kind of controlling party of on-board high-voltage inversion conversion equipment
Method comprising：
S10, when vehicle simultaneously meet following three point condition when：(1) on-board high-voltage inversion conversion equipment fault-free；(2) high
Pressure power battery SOC >=30%；(3) the enabled switch of electric discharge is pressed by the user, then vehicle alternating current discharge function activation；Such as any bar
Part is unsatisfactory for, then vehicle forbids foreign exchanges to discharge；
It is inverse to on-board high-voltage to send different electric discharge request instructions according to the enabled switch of electric discharge that user presses by S20, HCU
Become conversion equipment；
Detect whether the enabled switch of electric discharge resets or on-board high-voltage inversion conversion equipment has fault-free S30, HCU moment；Such as
Electric discharge at this time enables switch and resets, then HCU sends the request instruction that stops discharging and gives on-board high-voltage inversion conversion equipment, on-board high-voltage
Inversion conversion equipment stops externally electric discharge after receiving HCU and stopping electric discharge request instruction；Alternating current discharge flow terminates；
If on-board high-voltage inversion conversion equipment breaks down, fault message is sent instrument by HCU, and aobvious by instrument
Show dependent failure；HCU sends the request instruction that stops discharging and gives on-board high-voltage inversion conversion equipment, on-board high-voltage inversion conversion equipment
After receiving HCU and stopping electric discharge request instruction, stop externally electric discharge；Alternating current discharge flow terminates.
Optionally, in S20：
If the enabled switch of the first electric discharge is pressed, HCU is sent to the 16A electric discharge requests of on-board high-voltage inversion conversion equipment
Instruction；
If the enabled switch of the second electric discharge is pressed, HCU is sent to the 10A electric discharge requests of on-board high-voltage inversion conversion equipment
Instruction；
If the first electric discharge enables, switch and the second electric discharge are enabled to be switched while being pressed, and HCU only sends electric discharge and asks
Instruction, on-board high-voltage inversion conversion equipment are exported according to two discharge powers of satisfaction simultaneously.
The present invention has the advantages that：The on-board high-voltage inversion conversion equipment of the present invention, is capable of providing compared to low
The alternating current 220V power supply of inversion conversion equipment higher power and efficiency is pressed to be used to user.Meanwhile it directly being adopted in inner topology
With prime Buck circuits, the topological structure of rear class inversion cancels transformer coupled mode, reduce control complexity and single-piece at
This；Pass through vehicle end be arranged two kinds of different capacities vehicle-mounted electric discharge socket, it is possible to provide two kinds of different capacity AC powers for
Family uses, and can meet vehicle V2V functions；By the way that the fault category of Vehicular inverter is arranged, when event occurs for Vehicular inverter
After barrier, display dependent failure can be carried out in carload instrument
Description of the drawings
Fig. 1 is heretofore described on-board high-voltage inversion conversion equipment main circuit diagram.
Fig. 2 is heretofore described on-board high-voltage inversion conversion equipment control unit functional structure chart.
Fig. 3 is heretofore described full-vehicle control functional block diagram.
Fig. 4 is heretofore described vehicle-mounted inversion conversion equipment control flow chart.
Specific implementation mode
Technical scheme of the present invention is further elaborated with reference to embodiment and attached drawing.
Embodiment 1
Present embodiments provide a kind of on-board high-voltage inversion conversion equipment comprising conversion circuit.
The conversion circuit includes concatenated DC-DC circuit and DC-AC circuits, and the DC-DC selects Buck circuits, wherein
A points and B points are DC-DC input terminals, and C points and D points are DC-DC leading-out terminals.
Wherein, the DC-DC circuit includes capacitance C1, diode D1 and capacitance C2 in parallel；In capacitance C1 and diode
Switching device S1 (such as metal-oxide-semiconductor etc.) is provided on circuit between D1 cathode, specifically, the source electrode of the switching device S1 connects
Diode D1 cathode are connected to, the drain electrode of the switching device S1 is connected to one end of capacitance C1.
It is provided with inductance L1 on circuit between capacitance C2 and diode D1 cathode.
The both ends of the capacitance C1 are DC-DC input terminals, that is to say, that capacitance C1 is DC bus input capacitance, is born
Stable DC busbar voltage is blamed, switching device S1 is responsible for controlling the conducting and shutdown of conversion circuit, and inductance L1 is DC inductance, is born
The smooth and energy stores of electric current are blamed, diode D1 is afterflow diode, and continuous current circuit is provided for inductance L1.Capacitance C2 is output
DC capacitor is responsible for stablizing the output voltage of DC-DC circuit, and the both ends of capacitance C2 are DC-DC leading-out terminals at this time.
The DC-AC circuits use full bridge inverter, and specifically, C points and D points are DC-AC input terminals, E points and F points
For DC-AC leading-out terminals.
Specifically, the DC-AC circuits include switching device S2, switching device S3, switching device S4 and switching device S5.
The drain electrode of the switching device S2 is connected to one end of the capacitance C2, and the source electrode of the switching device S2 is connected to
The drain electrode of switching device S3, the source electrode of the switching device S3 are connected to the other end of the capacitance C2.
The drain electrode of the switching device S4 is connected to one end of the capacitance C2, and the source electrode of the switching device S4 is connected to
The drain electrode of switching device S5, the source electrode of the switching device S5 are connected to the other end of the capacitance C2.
To constitute full bridge inverter by switching device S2, switching device S3, switching device S4 and switching device S5.
The source electrode of the switching device S2 is connected to the source of the switching device S4 by concatenated inductance L2 and capacitance C3
Pole, to constitute low-pass filter circuit by inductance L2, capacitance C3, at this point, the both ends of capacitance C3 are DC-AC leading-out terminals.
In the present embodiment, on-board high-voltage inversion conversion equipment further includes control system, and the control system includes voltage inspection
It is single to survey unit, current detecting unit, temperature detecting unit, master controller, SPWM controllers, the first driving unit and the second driving
Member.
The voltage detection unit, current detecting unit and the equal signal of temperature detecting unit are connected to the master controller,
It is transferred to the master controller with the voltage signal, current signal and temperature signal that are detected, the master controller passes through CAN
Bus and HCU (entire car controller, similarly hereinafter) connections, the master controller are connect with the first driving unit signal, described to pass through
First driving unit carries out break-make control to conversion circuit；The master controller also passes through SPWM controllers and the second driving unit
Connection, to control full bridge inverter by second driving unit.
It is highly preferred that the voltage detection unit includes input voltage sensor VS1 and output voltage sensor VS2.It is defeated
Enter voltage sensor VS1 and be parallel to capacitance C1, for detecting DC bus input voltage, and by DC bus input voltage signal
Vin passes to master controller.Output voltage sensor VS2 is parallel to capacitance C3, for detecting ac output voltage, after rectification
Ac output voltage signal Vo pass to master controller.
Current detecting unit includes input current sensor IS1 and output current sensor IS2.Input current sensor
DC bus input current signal Iin is passed to master controller by IS1 for detecting DC bus input current.Output electricity
Flow sensor IS2 is used to detect ac output current, and by the ac output current signal Io after rectification to master controller.
Temperature signal T is passed to master by temperature detecting unit for detecting the radiator temperature that power device is installed
Controller, wherein the power device includes switching device S1, switching device S2, switching device S3, switching device S4, switch
Device S5 and diode D1.
Master controller is used for DC bus input voltage signal Vin, DC bus input current signal Iin, and exchange is defeated
Go out voltage signal Vo, ac output current signal Io and temperature signal T and built-in rotection thresholds multilevel iudge, sentences for failure
It is disconnected.
Master controller receives HCU control instructions, while feedback operation state, reporting fault with HCU by CAN bus.
Master controller controls the work of SPWM controllers by enable signal En and stops.
Master controller calculates the peak value VPo of output voltage signal Vo, using VPo as feedback signal, carries out voltage close loop control
System exports corresponding pwm control signal control switching device S1 conductings and shutdown, keeps the steady of vehicle-mounted inverter output voltage
It is fixed.
Master controller by DC bus input voltage signal Vin and DC bus input current signal Iin respectively with it is built-in
Input overvoltage protection threshold VinP and input overcurrent protection threshold value IinP compare, judge input overvoltage and over current fault.
If Vin<VinP, and Iin<IinP, then system normal operation, master controller are not processed.
If Vin>VinP is then judged to input over-voltage fault, and master controller enters fault protection scheme, and master controller stops defeated
Go out pwm signal to the first driving unit, and closes SPWM controllers enable signal to stop SPWM controllers output SPWM letters
Number the second driving unit is given, while input over-voltage fault is reported to HCU by CAN bus.
Similarly, if Iin>IinP, then be judged to input over current fault, and master controller enters fault protection scheme, master controller
Stop pwm signal to the first driving unit, closes SPWM controllers enable signal and export SPWM to stop SPWM controllers
Signal gives the second driving unit, while reporting input over current fault to HCU by CAN bus.
Ac output voltage signal Vo and ac output current signal Io are calculated peak value by master controller in real time respectively, are generated
Output voltage peak signal VPo and output current peak signal IPo.VPo and IPo respectively with built-in output over-voltage protection threshold value
VoP and output overcurrent rotection thresholds IoP compare, and judge output overvoltage and over current fault.
If VPo<VoP, and IPo<IoP, then system normal operation, master controller are not processed.
If VPo>VoP is then judged to output overvoltage failure, and master controller enters fault protection scheme, and master controller stops
Pwm signal give the first driving unit, close SPWM controllers enable signal to stop SPWM controllers export SPWM signals to
Second driving unit, while output overvoltage failure is reported to HCU by CAN bus.
Similarly, if IPo>IoP is then judged to output overcurrent failure, and master controller enters fault protection scheme, and master controller stops
Stop and pwm signal to the first driving unit, closes SPWM controllers enable signal to stop SPWM controllers output SPWM letters
Number the second driving unit is given, while output overcurrent failure is reported to HCU by CAN bus.
Temperature signal T compared with built-in temperature rotection thresholds TP, is judged system excess temperature failure by master controller.
If T<TP, then system normal operation, master controller are not processed.
If T>TP is then judged to excess temperature failure, and master controller enters fault protection scheme, and master controller stops pwm signal
To the first driving unit, SPWM controllers enable signal is closed to stop SPWM controllers and exports SPWM signals to the second driving
Unit, while excess temperature failure is reported to HCU by CAN bus.
SPWM controllers are used to receive the enabled working signal En of master controller, judge work and stopping.It exports constant
SPWM drive signals, control switching device S2, switching device S3, switching device S4 and switching device S5 conductings and shutdown, to DC-
AC circuits are controlled.
The driving that first driving unit is used to convert master controller output pwm control signal to driving switch device S1 is believed
Number DS1.
Second driving unit is used to convert SPWM controllers output SPWM control signals to driving switch device S2, switch
Drive signal DS2, drive signal DS3, drive signal DS4 and the drive signal of device S3, switching device S4 and switching device S5
DS5。
As shown in figure 3, the on-board high-voltage inversion conversion equipment further includes high voltage power battery, HCU, instrument and at least one
A vehicle-mounted electric discharge socket.
The high voltage power battery is connected to the DC-DC input terminals of the conversion circuit as energy source, for
Conversion circuit provides high voltage direct current.
The quantity of the vehicle-mounted electric discharge socket can be two, including 220Vac, 16A standard socket, for providing
3.6kW power is used to user；And 220Vac, 10A standard socket, it is used to user for providing 2.2kW power
It is both provided with electric discharge on each vehicle-mounted electric discharge socket and enables switch key, enabled switch key is controlled by user
Break-make.The enabled switch of two electric discharges is connect by rigid line with HCU, if user, which presses electric discharge, enables switch key, HCU detections
Circuit is connected, and indicates that user's request at this time is discharged using the socket.It is resetted if electric discharge enables switch key, HCU measure loops
It disconnects, then it represents that user stops request using the socket at this time, can stop discharging.As a result, have vehicle and is supplied to use
The alternating current discharge function of two kinds of family power selection.HCU is communicated by CAN bus with instrument.
Embodiment 2
A kind of control method of on-board high-voltage inversion conversion equipment is present embodiments provided, including：
S10, when vehicle simultaneously meet following three point condition when：(1) on-board high-voltage inversion conversion equipment fault-free；(2) high
Pressure power battery SOC >=30%；(3) the enabled switch of electric discharge is pressed by the user.Vehicle alternating current discharge function activation.Such as either condition
It is unsatisfactory for, then vehicle forbids foreign exchanges to discharge.
S20, HCU enable the position of the switch according to the electric discharge that user presses, and send different electric discharge request instructions to vehicle-mounted height
Press inversion conversion equipment.
If the enabled switch of the first electric discharge is pressed at this time, HCU is sent to the 16A electric discharges of on-board high-voltage inversion conversion equipment
Request instruction.
If the enabled switch of the second electric discharge is pressed at this time, HCU is sent to the 10A electric discharges of on-board high-voltage inversion conversion equipment
Request instruction.
If the first electric discharge enables, switch and the second electric discharge are enabled to be switched while being pressed, and HCU only sends electric discharge and asks
Instruction, on-board high-voltage inversion conversion equipment acquiescence are exported according to two discharge powers of satisfaction simultaneously.
Detect whether the enabled switch of electric discharge resets or on-board high-voltage inversion conversion equipment has fault-free S30, HCU moment.Such as
Electric discharge at this time enables switch and resets, then HCU sends the request instruction that stops discharging and gives on-board high-voltage inversion conversion equipment, on-board high-voltage
Inversion conversion equipment stops externally electric discharge after receiving HCU and stopping electric discharge request instruction.At this point, alternating current discharge flow terminates.
If on-board high-voltage inversion conversion equipment breaks down, fault message is sent instrument by HCU, and aobvious by instrument
Show dependent failure；HCU sends the request instruction that stops discharging and gives on-board high-voltage inversion conversion equipment, on-board high-voltage inversion conversion equipment
After receiving HCU and stopping electric discharge request instruction, stop externally electric discharge.At this point, alternating current discharge flow terminates.
Wherein, the fault category of on-board high-voltage inversion conversion equipment includes：Input over-voltage fault, input undervoltage failure, defeated
Enter over current fault, output overcurrent failure, excess temperature failure and CAN communication failure.After any failure occurs, on-board high-voltage inversion
Conversion equipment is by CAN bus real-time report to HCU.And fault message is passed into instrument for showing by HCU.When HCU sentences
When disconnected CAN communication failure at this time, HCU is directly passed to instrument and shows CAN communication failure.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of on-board high-voltage inversion conversion equipment, which is characterized in that including conversion circuit；
The conversion circuit includes concatenated DC-DC circuit and DC-AC circuits；
The DC-DC circuit includes capacitance C1, diode D1 and the capacitance C2 of parallel connection；Between capacitance C1 and diode D1 cathode
Circuit on be provided with the source electrode of switching device S1, the switching device S1 and be connected to diode D1 cathode, the switching device
The drain electrode of S1 is connected to one end of capacitance C1；It is provided with inductance L1 on circuit between capacitance C2 and diode D1 cathode；Institute
The both ends for stating capacitance C1 are DC-DC input terminals；
The DC-AC circuits include switching device S2, switching device S3, switching device S4 and switching device S5；The derailing switch
The drain electrode of part S2 is connected to one end of the capacitance C2, and the source electrode of the switching device S2 is connected to the drain electrode of switching device S3,
The source electrode of the switching device S3 is connected to the other end of the capacitance C2；The drain electrode of the switching device S4 is connected to the electricity
Hold one end of C2, the source electrode of the switching device S4 is connected to the drain electrode of switching device S5, and the source electrode of the switching device S5 connects
It is connected to the other end of the capacitance C2；The source electrode of the switching device S2 is connected to described by concatenated inductance L2 and capacitance C3
The both ends of the source electrode of switching device S4, capacitance C3 are DC-AC leading-out terminals.
2. on-board high-voltage inversion conversion equipment according to claim 1, which is characterized in that further include control system, it is described
Control system includes voltage detection unit, current detecting unit, temperature detecting unit, master controller, SPWM controllers, the first drive
Moving cell and the second driving unit；
The voltage detection unit and the equal signal of current detecting unit, temperature detecting unit are connected to the master controller, are used for
The voltage signal, current signal and temperature signal of detection are transferred to the master controller, the master controller passes through CAN bus
Connect with HCU, the master controller is connect with the first driving unit signal, with by first driving unit to conversion circuit
Carry out break-make control；The master controller is also connect by SPWM controllers with the second driving unit, to be driven by described second
Moving cell controls DC-AC circuits.
3. on-board high-voltage inversion conversion equipment according to claim 2, which is characterized in that the voltage detection unit includes
Input voltage sensor VS1 and output voltage sensor VS2；The input voltage sensor VS1 is parallel to capacitance C1, for examining
DC bus input voltage is surveyed, and DC bus input voltage signal Vin is passed into master controller；The output voltage sensing
Device VS2 is parallel to capacitance C3, and for detecting ac output voltage, the ac output voltage signal Vo after rectification is passed to master control
Device processed.
4. on-board high-voltage inversion conversion equipment according to claim 3, which is characterized in that the current detecting unit includes
Input current sensor IS1 and output current sensor IS2；The input current sensor IS1 is defeated for detecting DC bus
Enter electric current, and DC bus input current signal Iin is passed into master controller；The output current sensor IS2 is for examining
Ac output current is surveyed, and by the ac output current signal Io after rectification to master controller.
5. on-board high-voltage inversion conversion equipment according to claim 4, which is characterized in that the temperature detecting unit is used for
The radiator temperature that detection power device is installed, and temperature signal T is passed into master controller.
6. on-board high-voltage inversion conversion equipment according to claim 5, which is characterized in that master controller is used for direct current mother
Line input voltage signal Vin, DC bus input current signal Iin, ac output voltage signal Vo, ac output current signal
Io and temperature signal T and built-in rotection thresholds multilevel iudge, are used for breakdown judge.
7. on-board high-voltage inversion conversion equipment according to claim 6, which is characterized in that first driving unit is used for
Convert the pwm control signal that master controller exports to the drive signal DS1 of driving switch device S1；Second driving unit
For by SPWM controllers output SPWM control signal be converted into driving switch device S2, switching device S3, switching device S4 and
Drive signal DS2, drive signal DS3, drive signal DS4 and the drive signal DS5 of switching device S5.
8. on-board high-voltage inversion conversion equipment according to claim 7, which is characterized in that further include high voltage power battery,
HCU, instrument and at least one vehicle-mounted electric discharge socket；
The high voltage power battery is connected to the DC-DC input terminals of the conversion circuit, for providing high pressure to conversion circuit
Direct current；
The vehicle-mounted electric discharge socket is used for providing 220V AC powers to user；
It is both provided with electric discharge on each vehicle-mounted electric discharge socket and enables switch key, the enabled switch that discharges is connected by rigid line and HCU
It connects, if user, which presses electric discharge, enables switch key, the conducting of HCU measure loops indicates that user's request at this time vehicle-mounted is put using this
Electrical socket discharges；It is resetted if electric discharge enables switch key, HCU measure loops disconnect, then it represents that user, which stops request, at this time makes
With the socket, and stop discharging；
HCU is communicated by CAN bus with instrument.
9. a kind of control method of on-board high-voltage inversion conversion equipment, which is characterized in that including：
S10, when vehicle simultaneously meet following three point condition when：(1) on-board high-voltage inversion conversion equipment fault-free；(2) height presses
Power battery SOC >=30%；(3) the enabled switch of electric discharge is pressed by the user, then vehicle alternating current discharge function activation；Not such as either condition
Meet, then vehicle forbids foreign exchanges to discharge；
S20, HCU send different electric discharge request instructions and turn to on-board high-voltage inversion according to the enabled switch of electric discharge that user presses
Changing device；
Detect whether the enabled switch of electric discharge resets or on-board high-voltage inversion conversion equipment has fault-free S30, HCU moment；As at this time
Electric discharge enables switch and resets, then HCU sends the request instruction that stops discharging and gives on-board high-voltage inversion conversion equipment, on-board high-voltage inversion
Conversion equipment stops externally electric discharge after receiving HCU and stopping electric discharge request instruction；Alternating current discharge flow terminates；
If on-board high-voltage inversion conversion equipment breaks down, fault message is sent instrument by HCU, and shows phase by instrument
Close failure；HCU sends the request instruction that stops discharging and on-board high-voltage inversion conversion equipment, on-board high-voltage inversion conversion equipment is given to connect
After receiving HCU stopping electric discharge request instructions, stop externally electric discharge；Alternating current discharge flow terminates.
10. the control method of on-board high-voltage inversion conversion equipment according to claim 9, which is characterized in that in S20：
If the enabled switch of the first electric discharge is pressed, HCU is sent to the 16A electric discharge requests of on-board high-voltage inversion conversion equipment and refers to
It enables；
If the enabled switch of the second electric discharge is pressed, HCU is sent to the 10A electric discharge requests of on-board high-voltage inversion conversion equipment and refers to
It enables；
If the first electric discharge enables, switch and the second electric discharge are enabled to be switched while being pressed, and HCU only sends electric discharge request instruction,
On-board high-voltage inversion conversion equipment is exported according to two discharge powers of satisfaction simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810125328.4A CN108429453B (en) | 2018-02-08 | 2018-02-08 | Vehicle-mounted high-voltage inversion conversion device and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125328.4A CN108429453B (en) | 2018-02-08 | 2018-02-08 | Vehicle-mounted high-voltage inversion conversion device and control method |
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| CN108429453B CN108429453B (en) | 2020-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149730A (en) * | 2018-11-12 | 2019-01-04 | 深圳市创世达实业有限公司 | Accumulation energy type inversion mobile power source and its working method |
| CN109802458A (en) * | 2019-01-22 | 2019-05-24 | 重庆长安汽车股份有限公司 | A kind of electric discharge socket, discharge system, charging method and automobile for electric vehicle |
| CN111791746A (en) * | 2020-06-30 | 2020-10-20 | 中国第一汽车股份有限公司 | Flexible battery replacement system and method for vehicle, electronic device and storage medium |
| CN112019077A (en) * | 2019-05-28 | 2020-12-01 | 湖南工业大学 | Novel single-phase inverter based on buck circuit and control method thereof |
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| CN109802458A (en) * | 2019-01-22 | 2019-05-24 | 重庆长安汽车股份有限公司 | A kind of electric discharge socket, discharge system, charging method and automobile for electric vehicle |
| CN112019077A (en) * | 2019-05-28 | 2020-12-01 | 湖南工业大学 | Novel single-phase inverter based on buck circuit and control method thereof |
| CN111791746A (en) * | 2020-06-30 | 2020-10-20 | 中国第一汽车股份有限公司 | Flexible battery replacement system and method for vehicle, electronic device and storage medium |
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