CN110266245A - Motor driven systems, method, motor driver and electric car - Google Patents
Motor driven systems, method, motor driver and electric car Download PDFInfo
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- CN110266245A CN110266245A CN201910480098.8A CN201910480098A CN110266245A CN 110266245 A CN110266245 A CN 110266245A CN 201910480098 A CN201910480098 A CN 201910480098A CN 110266245 A CN110266245 A CN 110266245A
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- output port
- high pressure
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 26
- 230000004224 protection Effects 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
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- 238000007689 inspection Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- 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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of motor driven systems, method, motor driver and electric cars, the motor driven systems include high pressure backup battery, electric machine controller, driving circuit, first voltage detection unit, low-tension supply and the driving power powered by low-tension supply, driving circuit includes the first driving unit and the second driving unit, and first driving unit be used for inverter upper arm switching tube outputting drive voltage, the second driving unit be used for inverter lower bridge arm switching tube outputting drive voltage；Driving power generates two-way driving voltage and is exported respectively by first voltage output port and second voltage output port, and first voltage output port is connected to the first driving unit；First output port of second voltage output port and high pressure backup battery is connected to the second driving unit via first selecting unit, and the second driving unit is switched to the first output port power supply by high pressure backup battery in second voltage output port exception by first selecting unit.
Description
Technical field
The present embodiments relate to Control of Electric Vehicles fields, more specifically to a kind of motor driven systems, side
Method, motor driver and electric car.
Background technique
With the development of electric vehicle engineering, electric car is received by more and more people, correspondingly, to electric car
Safety requirements it is also higher and higher.As shown in Figure 1, high-voltage end 10 provides electric energy for motor operation in existing electric car,
Specifically, the high voltage direct current that high-voltage end 10 provides is converted to low-voltage DC and is low pressure by high power DC translation circuit 11
Battery 12 charges, and electric machine controller 15, lower bridge arm driving power 13, upper bridge arm driving power 14 are powered by A-battery 12, electricity
The feedback voltage and feedback current that machine controller 15 is obtained according to motor feedback circuit 18 from inverter 17 generate drive control letter
Number, driving circuit 16 is exported according to above-mentioned driving control signal and lower bridge arm driving power 13, upper bridge arm driving power 14
Driving voltage generates driving pulse, controls inverter 17 for the high voltage direct current that high-voltage end 10 exports and is converted to alternating current, so that
Driving motor 2 is run.
It breaks down in electric car, when A-battery power supply power down, to guarantee safety, it is still desirable to guarantee
Actively short circuit is carried out with quick shutdown for the low-voltage power supply of motor control, and to motor 2, improves vehicle safety and protection vapour
Vehicle controller.For realize fault condition under quick shutdown, at present mainly by provide all the way backup battery 19 come provide actively
The energy of short-circuit protection, as shown in Figure 1.Above-mentioned backup battery 19 directly exports high level and arrives when electric car breaks down
The switching tube of the control terminal of switching tube in inverter 17, the upper bridge or lower bridge that make inverter 17 is placed in normally opened state；In addition,
The output of backup battery 19 can also be supplied to driving circuit 16, make the upper bridge of inverter 17 or opening for lower bridge by driving circuit 16
It closes pipe and is in normally opened state.
Since the driving power of above-mentioned motor driver is realized using two power supplys, the two common cause failure is avoided, to meet
The requirement of functional safety, while needing to design additional high pressure DC/DC power supply, to guarantee to control electricity consumption, and pass through motor control
Device realizes active short-circuit function, and so as to cause existing driving power, that there are power supply usage quantities is more, at high cost, volume is big etc.
Problem.
Summary of the invention
Embodiment technical problems to be solved of the embodiment of the present invention are, for the driving power skill of above-mentioned motor driver
The problems such as power supply usage quantity is more, at high cost, volume is big in art scheme, provide a kind of motor driven systems, motor driver and
Electric car.
The technical solution that the embodiment of the present invention solves above-mentioned technical problem is to provide a kind of motor driven systems, including height
Press backup battery, electric machine controller, driving circuit, first voltage detection unit, low-tension supply and by low-tension supply power supply
Driving power, in which:
The driving circuit includes the first driving unit and the second driving unit, and first driving unit is used for inverse
Become the upper arm switching tube switching tube outputting drive voltage of device, second driving unit to the lower bridge arm of the inverter for opening
Close pipe outputting drive voltage；
The driving power generates two-way driving voltage and is exported respectively by first voltage output port and second voltage
Port output, and the first voltage output port is connected to first driving unit；The second voltage output port with
First output port of the high pressure backup battery is connected to the second driving unit, and described via first selecting unit respectively
Second driving unit is switched in the second voltage output port exception and is backed up by the high pressure by one selecting unit
First output port of power supply is powered.
In motor driven systems described in the embodiment of the present invention, the first selecting unit includes first and the three or two pole
Pipe, and the anode of the first diode is connected to the second voltage output port, cathode is connected to the second driving list
Member, the anode of the third diode are connected to the first output port of high pressure backup battery, the cathode connection of third diode
To the cathode of first diode；The electric machine controller includes the first electricity for detecting the anode voltage of the first diode
Press detection unit, and the electric machine controller in the detected voltage of first voltage detection unit less than the first preset value
When, Xiang Suoshu driving circuit exports active short-circuit protection and controls signal.
In motor driven systems described in the embodiment of the present invention, the high pressure backup battery further includes second output terminal
Mouthful, the second output terminal mouth and the low-tension supply are connected to the driving power via the second selecting unit respectively, and
The driving power is switched to by the high pressure backup battery by second selecting unit in the low-tension supply exception
Second output terminal confession electricity.
In motor driven systems described in the embodiment of the present invention, second selecting unit includes the second diode and the
Four diodes, and the anode of second diode is connected to the second output terminal mouth, cathode is connected to the driving power,
The anode of 4th diode is connected to the output port of low-tension supply, and the cathode of the 4th diode is connected to second
The cathode of diode；The electric machine controller includes the second voltage detection for detecting the anode voltage of second diode
Unit, and the electric machine controller is when the detected voltage of second voltage detection unit is less than the second preset value, to
The driving circuit output active short-circuit protection controls signal.
In motor driven systems described in the embodiment of the present invention, when low-tension supply power supply is normal, the low pressure
The output voltage of power supply is greater than the output voltage of the second output terminal mouth of the high pressure backup battery.
In motor driven systems described in the embodiment of the present invention, the high pressure backup battery includes high-tension battery and by institute
The battery-powered high voltage isolated power supply of high-voltage electricity is stated, the low-tension supply includes A-battery.
The embodiment of the invention also provides a kind of driving methods, are applied to motor driver, the motor driver
Including high pressure backup battery, electric machine controller, driving circuit, low-tension supply and the driving power powered by low-tension supply, and
The driving circuit include for the first driving unit from the upper arm switching tube outputting drive voltage to inverter and for
Second driving unit of the lower bridge arm switching tube outputting drive voltage of the inverter, the driving power are described including being connected to
The first voltage output port of first driving unit and the second voltage output port output for being connected to second driving unit,
And the high pressure backup battery includes for the first output port for electricity output；The described method includes:
It is described by the second voltage output port of the driving power when the second voltage output port is normal
The power supply of second driving unit；
In the second voltage output port exception, second driving unit is switched to, electricity is backed up by the high pressure
First output port in source is powered.
In driving method described in the embodiment of the present invention, the high pressure backup battery includes for for electricity output
Second output terminal mouth, which comprises
It is driving power power supply by the low-tension supply when the low-tension supply is normal；
In the low-tension supply exception, the driving power is switched to the second output by the high pressure backup battery
Port power supply.
The embodiment of the invention also provides a kind of motor driver, the motor driver includes above-mentioned motor driven system
System.
The embodiment of the present invention also provides a kind of electric car, and the electric car includes above-mentioned motor driver.
Motor driven systems, motor driver and the electric car of the embodiment of the present invention produce two-way drive by being arranged
The driving power of dynamic voltage, and the supply voltage of real-time detection driving power output switches in supply voltage exception for circuit
Diameter, while electric machine controller issues active short-circuit signal, quick and precisely controls motor and realizes active short-circuit protection.With existing skill
Art scheme is compared, and motor driven systems circuit of the embodiment of the present invention is simple, is guaranteed under identical function security situation, is driven with one
Power supply reduces cost instead of two driving powers in existing scheme, and reduction accounts for pcb board area.In addition, institute of the embodiment of the present invention
The high voltage isolated power supply structure of use is simple, and increasing less device can break down or A-battery goes out in driving power
In the case where existing failure, ASC mode is rapidly entered, ensures electric automobile during traveling and motor driver safety.
Detailed description of the invention
Fig. 1 is the schematic diagram of prior art motor driver；
Fig. 2 is the schematic diagram of motor driven systems embodiment provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of motor driver embodiment provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of driving method embodiment provided in an embodiment of the present invention；
Fig. 5 be another embodiment of the present invention provides driving method embodiment flow diagram.
Specific embodiment
In order to which the objects, technical solutions and advantages of the embodiment of the present invention are more clearly understood, below in conjunction with attached drawing and reality
Example is applied, the embodiment of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to
It explains the embodiment of the present invention, is not intended to limit the present invention embodiment.
As shown in Fig. 2, being the schematic diagram of motor driven systems embodiment of the embodiment of the present invention, which can be answered
For occasions such as electric cars, and active short-circuit protection can be carried out to motor in motor A-battery power supply trouble.This implementation
The motor driven systems of example include high pressure backup battery 21, electric machine controller 22, driving circuit 23, first voltage detection unit
24, second voltage detection unit 29, low-tension supply 25 and the driving power 26 powered by low-tension supply, in practical applications,
Above-mentioned driving circuit 23, first voltage detection unit 24, second voltage detection unit 29 and driving power 26 all can be integrated into
Electric machine controller 22.Wherein:
The control signal input of above-mentioned driving circuit 23 is connected to electric machine controller 22, and according to from electric machine controller
22 driving control signal generates multichannel driving voltage (i.e. pulse width modulating signal).Specifically, the driving circuit 23 wraps
The first driving unit 231 and the second driving unit 232 are included, and first driving unit 231 includes multiple output ends, and is passed through
Multiple output end is separately connected the control terminal of multiple upper arm switching tubes of inverter；Second driving unit 232 equally packet
Multiple output ends are included, and are separately connected by multiple output end the control terminal of multiple lower bridge arm switching tubes of inverter.Certainly,
In practical applications, multiple output ends of the first driving unit 231 can also be connected respectively to the control terminal of multiple lower arm switching tubes,
And multiple output ends of the second driving unit 232 can then be connected respectively to the control terminal of multiple upper arm switching tubes.
Above-mentioned driving power 26 generates two-way driving voltage and passes through first voltage output port 261 and second voltage respectively
Output port 262 exports, and the first voltage output port 261 is connected to first driving unit 231, to drive to first
Moving cell 231 is powered.First output port of the second voltage output port 262 and the high pressure backup battery 21 is via the
One selecting unit 27 is connected to the second driving unit 232, to power to the second driving unit 232, above-mentioned first selecting unit 27
Second driving unit 232 is switched to by the high pressure backup battery when the second voltage output port 262 is abnormal
21 the first output port power supply.Specifically, high pressure backup battery 21 takes electricity from high-tension battery, as the second driving unit 232
Backup battery, to guarantee the normal power supply of driving circuit 23, the first output port of the high pressure backup battery 21 exports electricity
Pressure ratio A-battery is slightly lower.Wherein, above-mentioned first selecting unit 27 includes first diode and third diode, and the one or two pole
The anode of pipe is connected to the second voltage output port, cathode is connected to second driving unit 232, the three or two pole
The anode of pipe is connected to the first output port of high pressure backup battery 21, and cathode is connected to the cathode of the first diode；The
One voltage detection unit 24 is used to detect the anode voltage of the first diode, and the electric machine controller 22 is described first
When the detected voltage of voltage detection unit 24 is less than the first preset value, Xiang Suoshu driving circuit 23 exports active short-circuit protection
Signal is controlled, control motor realizes actively short circuit.Specifically, it is exported just in the second voltage output port 262 of driving power 26
Chang Shi, third diode reversely end, first diode conducting, the second voltage output port 262 to second of driving power 26
Driving unit 232 is powered；In second voltage 262 output abnormality of output port of driving power 26, such as export unexpected power down or
When short-circuit, third diode current flow, first diode is reversely ended, and driving power 26 is switched to by the high pressure backup battery 21
The first output port power supply.
Further, the high pressure backup battery 21 further includes second output terminal mouth, the second output terminal mouth and described
Low-tension supply 25 is connected to the driving power 26 via the second selecting unit 28, and second selecting unit 28 is described low
The driving power 26 is switched to the second output terminal confession electricity by the high pressure backup battery 21 when voltage source 25 is abnormal.Tool
Body, when above-mentioned low-tension supply 25 is normal, the second selecting unit 28 makes driving power 26 be powered by low-tension supply 25, and low
When voltage source 25 is abnormal, the second selecting unit 28 makes driving power 26 by the second output terminal confession electricity of high pressure backup battery 21.
In addition, the output voltage of the low-tension supply 25 is greater than the high pressure backup battery 21 when low-tension supply 25 powers normal
The output voltage of second output terminal mouth.Wherein, above-mentioned second selecting unit 28 includes the second diode and the 4th diode, and institute
The anode for stating the second diode is connected to the second output terminal mouth, cathode is connected to the driving power 26, and the described 4th 2
The output port of the anode connection low-tension supply 25 of pole pipe, cathode are connected to the cathode of second diode；Second voltage inspection
The anode voltage that unit 29 is used to detect second diode is surveyed, and the electric machine controller 22 is detected in the second voltage
When the detected voltage of unit is less than the second preset value, Xiang Suoshu driving circuit 23 exports active short-circuit protection and controls signal,
It controls motor and realizes actively short circuit.
Further, the high pressure backup battery 21 is including high-tension battery and by the battery-powered high_voltage isolation of the high-voltage electricity
Power supply, the low-tension supply 25 include A-battery.Under normal circumstances, driving power 26 is powered by A-battery, when output is anticipated
When outer power down or short circuit, high voltage isolated power supply is that driving power 26 provides power supply.
The motor driven systems circuit is simple, in the case where guaranteeing identical function security situation, with a driving power instead of
Two driving powers in existing scheme, reduce cost, and reduction accounts for pcb board area.In addition, the circuit structure letter of high voltage isolated power supply
Single, increasing less device can rapidly enter in the case where driving power breaks down or A-battery breaks down
ASC mode ensures electric automobile during traveling and motor driver safety.
As shown in figure 3, being the schematic diagram of motor driver of the embodiment of the present invention.Motor driver includes drive system, is driven
Dynamic system includes high voltage isolated power supply 31, electric machine controller 32, driving circuit 33, A-battery 35, is powered by A-battery 35
Driving power 36, first diode D1, third diode D3, wherein driving circuit 33 include the first driving unit and second
Driving unit, driving power 36 include first voltage output port and second voltage output port.The first diode D1's
Anode is connected to the second voltage output port, cathode is connected to second driving unit, the high voltage isolated power supply 31
The first output port be connected to the cathode of first diode D1；The anode of the third diode D3 connects high voltage isolated power supply
31 the first output port, and the cathode of the third diode D3 is connected to the cathode of the first diode D1；The electricity
Machine controller 32 includes the first voltage detection unit for detecting the anode voltage of the first diode D1, and the motor
Controller 32 is when the detected voltage of the first voltage detection unit 34 is less than the first preset value, Xiang Suoshu driving circuit
33 output active short-circuit protections control signal, so that controlling motor realizes actively short circuit.Driving electricity in above-mentioned motor driver
Source 38, instead of two driving powers in prior art, reduces cost with a driving power, and reduction accounts for pcb board area.
In the above-described embodiments, the high voltage isolated power supply 31 further includes second output terminal mouth, the second output terminal mouth
It is connected to the driving power 36 via first diode D2 with the low-tension supply 35, and the first diode D1 is described
The driving power 36 is switched to the second output terminal confession electricity by the high pressure backup battery 31 when low-tension supply 35 is abnormal.
Further, drive system includes the second diode D2 and the 4th diode D4, and the second diode D2
Anode is connected to the second output terminal mouth, cathode is connected to the driving power 36, the output port of the low-tension supply 35
It is connected to the cathode of the second diode D2；The output port of the anode connection low-tension supply 35 of the 4th diode D4, it is described
The cathode of 4th diode D4 is connected to the cathode of the second diode D2；The electric machine controller 32 includes for detecting
The second voltage detection unit of the anode voltage of the second diode D2 is stated, and the electric machine controller 32 is examined in the second voltage
When surveying the detected voltage of unit less than the second preset value, Xiang Suoshu driving circuit 33 exports active short-circuit protection control letter
Number, control motor realizes actively short circuit.
Specifically, high voltage isolated power supply 31 takes electricity by high-tension battery power supply, exports two-way driving voltage.High_voltage isolation electricity
First output port in source 31 is connected to the cathode of D1 by diode D3, and the output voltage is slightly below the of driving power 36
The output voltage of two voltage output ports.When the output of second voltage output port is normal, diode D1 conducting, D3 is reversely cut
Only；When the output accident power down of second voltage output port or short circuit, diode D3 conducting, D1 reversely ends, the second driving
The output power supply of unit is provided by the second output terminal mouth of high voltage isolated power supply 31, while electric machine controller issues actively short circuit letter
Number, control motor realizes actively short circuit.The second output terminal mouth of high voltage isolated power supply 31 is connected to power supply pipe by diode D2
The input terminal of module, and the backup battery as entire low-pressure system (including electric machine controller 32, driving power 36) are managed, this is defeated
Voltage is more slightly lower than A-battery 35 out.When A-battery 35 works normally, diode D4 conducting, diode D2 reversely ends,
Electric machine controller 32, driving power 36 are powered by A-battery 35；When A-battery 35, which is powered, to break down, diode D2 is led
Logical, diode D4 reversely ends, and high voltage isolated power supply 31 is low-pressure system power supply, while electric machine controller 32 issues actively short circuit
Signal, control motor realize actively short circuit.
It should be noted that above-mentioned drive system can be integrated into motor driver, it can also be by independent hardware realization.
The high voltage isolated power supply structure that above-mentioned motor driver uses is simple, in the second output terminal mouth of high voltage isolated power supply
ASC mould can be rapidly entered in the case where driving power breaks down or A-battery breaks down by increasing less device
Formula ensures electric automobile during traveling and motor driver safety.
The embodiment of the present invention also provides a kind of electric car, including the motor driver in corresponding embodiment in above-mentioned Fig. 3.
Since the motor driver in electric car and above-mentioned Fig. 3 corresponding embodiment in the present embodiment belongs to same design, specific
Realization process is shown in corresponding motor driver embodiment in detail, and the technical characteristic in motor driver embodiment is in the present embodiment
In it is corresponding be applicable in, which is not described herein again.
As shown in figure 4, the embodiment of the invention also provides a kind of driving method, this method can be applied to motor driven
Device, wherein above-mentioned motor driver includes high pressure backup battery, electric machine controller, driving circuit, low-tension supply and by low pressure
The driving power of power supply power supply, and driving circuit includes driving for first of the upper arm switching tube outputting drive voltage to inverter
Moving cell and the second driving unit for from the lower bridge arm switching tube outputting drive voltage to the inverter, driving power packet
Include the first voltage output port for being connected to first driving unit and the second voltage for being connected to the second driving unit output
Port output, and high pressure backup battery includes for the first output port for electricity output；The method of the present embodiment can pass through one
A first comparator is realized, can also be realized by other electronic components (such as a first diode), and this method comprises:
Step S41: after motor driver starting, judge whether the output of second voltage output port is normal, and the
Step S42 is executed when the output of two voltage output ports is normal, it is no to then follow the steps S43.Specifically, in this step, if
When the output voltage of two voltage output ports is greater than or equal to the output voltage of the first output port of high pressure backup battery, confirmation
The output of second voltage output port is normal；If the output voltage of second voltage output port is less than the first of high pressure backup battery
When the output voltage of output port, the output abnormality of second voltage output port is confirmed.
Step S42: being second driving unit power supply by the second voltage output port of driving power.
Step S43: in second voltage output port exception, second driving unit is switched to, electricity is backed up by high pressure
First output port in source is powered.
In the driving method of another embodiment of the present invention, high pressure backup battery includes for second for electricity output
Output port, and the driving method is in addition to the step in Fig. 4, further includes:
Step S51: after motor driver starting, judge whether the output of low-tension supply is normal, and in low-tension supply
Step S52 is executed when exporting normal, it is no to then follow the steps S53.Specifically, in this step, if the output voltage of low-tension supply
More than or equal to the second output terminal mouth of high pressure backup battery output voltage when, confirm that the output of low-tension supply is normal；If low
When the output voltage of voltage source is less than the output voltage of the second output terminal mouth of high pressure backup battery, the output of low-tension supply is confirmed
It is abnormal.
Step S52: being driving power power supply by low-tension supply.
Step S53: driving power is switched to the second output terminal confession electricity by high pressure backup battery.
Above-mentioned steps S51~S53 can be realized by second comparator, can also pass through other electronic components (such as one
A second diode) it realizes.
The motor driven systems in driving method and above-mentioned Fig. 2 corresponding embodiment in the present embodiment belong to same structure
Think, specific implementation process is shown in corresponding system embodiment in detail, and the technical characteristic in system embodiment is implemented in this equipment
Corresponding in example to be applicable in, which is not described herein again.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present application constitutes any limit
It is fixed.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
Embodiment described above is only to illustrate the technical solution of the application, rather than its limitations；Although referring to aforementioned reality
Example is applied the application is described in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution should all
Comprising within the scope of protection of this application.
Claims (10)
1. a kind of motor driven systems, which is characterized in that including high pressure backup battery, electric machine controller, driving circuit, the first electricity
Press detection unit, low-tension supply and the driving power powered by low-tension supply, in which:
The driving circuit includes the first driving unit and the second driving unit, and first driving unit is used for inverter
Upper arm switching tube outputting drive voltage, second driving unit be used for the lower bridge arm switching tube of the inverter export drive
Dynamic voltage；
The driving power generates two-way driving voltage and passes through first voltage output port and second voltage output port respectively
Output, and the first voltage output port is connected to first driving unit；The second voltage output port with it is described
First output port of high pressure backup battery is connected to second driving unit, and described via first selecting unit respectively
Second driving unit is switched in the second voltage output port exception and is backed up by the high pressure by one selecting unit
First output port of power supply is powered.
2. motor driven systems according to claim 1, which is characterized in that the first selecting unit includes the one or two pole
Pipe and third diode, and the anode of the first diode is connected to the second voltage output port, cathode is connected to institute
State the second driving unit, the first output port of the anode connection high pressure backup battery of the third diode, and the third
The cathode of diode is connected to the cathode of the first diode；The electric machine controller includes for detecting the one or two pole
The first voltage detection unit of the anode voltage of pipe, and the electric machine controller is detected in the first voltage detection unit and is obtained
Voltage less than the first preset value when, Xiang Suoshu driving circuit export active short-circuit protection control signal.
3. motor driven systems according to claim 1, which is characterized in that the high pressure backup battery further includes second defeated
Exit port, the second output terminal mouth and the low-tension supply are connected to the driving power via the second selecting unit respectively,
And the driving power is switched to by the high pressure backup battery by second selecting unit in the low-tension supply exception
Second output terminal confession electricity.
4. motor driven systems according to claim 3, which is characterized in that second selecting unit includes the two or two pole
Pipe and the 4th diode, and the anode of second diode is connected to the second output terminal mouth, cathode is connected to the drive
Dynamic power supply, the output port of the anode connection low-tension supply of the 4th diode, the cathode of the 4th diode are connected to
The cathode of second diode；The electric machine controller includes second for detecting the anode voltage of second diode
Voltage detection unit, and the electric machine controller is default less than second in the detected voltage of second voltage detection unit
When value, Xiang Suoshu driving circuit exports active short-circuit protection and controls signal.
5. motor driven systems according to claim 4, which is characterized in that in the low-tension supply normal power supply, institute
State low-tension supply output voltage be greater than the high pressure backup battery second output terminal mouth output voltage.
6. motor driven systems according to claim 1, which is characterized in that the high pressure backup battery includes high-tension battery
With by the battery-powered high voltage isolated power supply of the high-voltage electricity, the low-tension supply includes A-battery.
7. a kind of driving method is applied to motor driver, which is characterized in that the motor driver includes high pressure backup
Power supply, electric machine controller, driving circuit, low-tension supply and the driving power powered by low-tension supply, and the driving circuit
Including the first driving unit for the upper arm switching tube outputting drive voltage to inverter and for the inverter
Second driving unit of lower bridge arm switching tube outputting drive voltage, the driving power include being connected to first driving unit
First voltage output port and be connected to the second voltage output port output of second driving unit, and the high voltage standby
Part power supply includes for the first output port for electricity output；The described method includes:
When the second voltage output port is normal, the second voltage output port by the driving power is described second
Driving unit power supply；
In the second voltage output port exception, second driving unit is switched to by the high pressure backup battery
The power supply of first output port.
8. driving method according to claim 7, which is characterized in that the high pressure backup battery includes for powering
The second output terminal mouth of output, which comprises
It is driving power power supply by the low-tension supply when the low-tension supply is normal；
In the low-tension supply exception, the driving power is switched to by the second output terminal mouth of the high pressure backup battery
Power supply.
9. a kind of motor driver, which is characterized in that the motor driver includes as of any of claims 1-6
Motor driven systems.
10. a kind of electric car, which is characterized in that including motor driver as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910480098.8A CN110266245A (en) | 2019-06-04 | 2019-06-04 | Motor driven systems, method, motor driver and electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910480098.8A CN110266245A (en) | 2019-06-04 | 2019-06-04 | Motor driven systems, method, motor driver and electric car |
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| CN201910480098.8A Pending CN110266245A (en) | 2019-06-04 | 2019-06-04 | Motor driven systems, method, motor driver and electric car |
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| CN111786598A (en) * | 2020-06-03 | 2020-10-16 | 华为技术有限公司 | Motor control device and motor control method |
| CN113131439A (en) * | 2019-12-31 | 2021-07-16 | 比亚迪股份有限公司 | Motor control system and motor control device |
| CN113131833A (en) * | 2019-12-31 | 2021-07-16 | 比亚迪股份有限公司 | Motor control system and motor control device |
| CN113479065A (en) * | 2021-07-29 | 2021-10-08 | 中国第一汽车股份有限公司 | Motor active short circuit control circuit and driving method thereof |
| CN114056111A (en) * | 2020-08-06 | 2022-02-18 | 华为数字能源技术有限公司 | Motor drive control device, power system and electric automobile |
| CN114312343A (en) * | 2021-01-14 | 2022-04-12 | 华为数字能源技术有限公司 | Motor control system and automobile |
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| CN116545338A (en) * | 2023-07-06 | 2023-08-04 | 深圳艾为电气技术有限公司 | EMC noise removal control system and control method for electric compressor |
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