CN106926706A - A kind of method of electric automobile motor system active discharge - Google Patents
A kind of method of electric automobile motor system active discharge Download PDFInfo
- Publication number
- CN106926706A CN106926706A CN201710274003.8A CN201710274003A CN106926706A CN 106926706 A CN106926706 A CN 106926706A CN 201710274003 A CN201710274003 A CN 201710274003A CN 106926706 A CN106926706 A CN 106926706A
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- Prior art keywords
- entire car
- car controller
- electric machine
- electric
- machine controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000005284 excitation Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000004899 motility Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 2
- WUCYRTXFXRZKSV-UHFFFAOYSA-N 1-ethyl-3-[5-[6-(4-methoxy-2,6-dimethylphenyl)-2-pyrazin-2-ylpyrimidin-4-yl]-1,3-thiazol-2-yl]urea Chemical compound S1C(NC(=O)NCC)=NC=C1C1=CC(C=2C(=CC(OC)=CC=2C)C)=NC(C=2N=CC=NC=2)=N1 WUCYRTXFXRZKSV-UHFFFAOYSA-N 0.000 description 5
- 206010014357 Electric shock Diseases 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention provides a kind of method of electric automobile motor system active discharge, and methods described need to provide entire car controller VCU, electric machine controller MCU, motor, electrokinetic cell BMS and key switch；What entire car controller VCU can receive the key switch of vehicle is turned on and off signal；After shutdown signal is received, entire car controller VCU is cut-off by the just main negative relay of master that CAN communicates enable electrokinetic cell BMS；Entire car controller VCU is communicated by CAN and is enabled electric machine controller MCU active discharges；The electric machine controller MCU receives the signal that is turned on and off of the key switch of vehicle, performs the instruction of entire car controller VCU active discharges；Motor is enabled during active discharge and realizes active discharge.The present invention is avoided that personnel's high pressure electrical shock safety hazard, improves repair and maintenance operation timeliness.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of side of electric automobile motor system active discharge
Method.
Background technology
High voltage thin film capacitive element is contained in electric vehicle motor controller inside, after electricity under vehicle operation parking, motor
Controller internal membrane electric capacity carries high voltage (such as 380V), and it is hidden to there is high pressure electrical shock safety during personnel's touching electric machine controller
Suffer from；Therefore electric automobile need to possess electric system active discharge security strategy, i.e. electric machine controller need can be by thin-film capacitor from height
Voltage is actively quickly down to safe voltage scope, to ensure that personnel touch motor control in certain hour after electricity under vehicle
Without high pressure Danger Electric shock risk during device.
Prior art has the disadvantage：Current electric automobile motor system is without active discharge security strategy, or vehicle active release
Electric strategy imperfection, causes under vehicle end of run key after electricity, there is motor control high pressure electric shock hidden danger, or maintenance person is needed
Wait a very long time ageing without can just touch maintenance electric machine controller, influence service work after high pressure.
A kind of " mixed power automobile battery charging and discharging current limitation protecting method " is disclosed in the prior art, sees publication number
For：CN101214797B, publication date is：The Chinese patent of 2010-08-11, the invention can realize hybrid power automobile battery
The real-time limitation protection of charging and discharging currents.Technical scheme：A kind of mixed power automobile battery charging and discharging current limitation protecting method,
High-tension battery charge or discharge current limit value is fed back to entire car controller by battery control system, and entire car controller is according to electricity
Stream limits value sends torque request to motor control unit, so as to limit high-tension battery charging and discharging currents.That is the invention
The main real-time limitation protection for realizing mixed power automobile battery charging and discharging electric current, the technical problem for being solved not is this patent
The active discharge of application, so as to the danger for avoiding high pressure from getting an electric shock.
The content of the invention
The technical problem to be solved in the present invention, is to provide a kind of method of electric automobile motor system active discharge, is kept away
Exempt from personnel's high pressure electrical shock safety hazard, improve repair and maintenance operation timeliness.
What the present invention was realized in：A kind of method of electric automobile motor system active discharge, methods described needs to provide
Entire car controller VCU, electric machine controller MCU, motor, electrokinetic cell BMS and key switch；Entire car controller VCU can be received
The key switch of vehicle is turned on and off signal；After shutdown signal is received, entire car controller VCU is logical by CAN
The just main negative relay of the master of messenger's motility battery BMS cut-offs；Entire car controller VCU is communicated by CAN and is enabled motor control
Device MCU active discharges processed；The electric machine controller MCU receives the signal that is turned on and off of the key switch of vehicle, performs vehicle
Controller VCU active discharges are instructed；Motor is enabled during active discharge and realizes active discharge.
Further, the electric automobile motor system includes entire car controller VCU, electric machine controller MCU, motor, dynamic
Power battery BMS and key switch；The electrokinetic cell BMS is connected by CAN with the entire car controller VCU, described
Entire car controller VCU is connected by CAN with the electric machine controller MCU, and the electric machine controller MCU is electrically connected with motor
Connect；The electric machine controller MCU is internally provided with interior thin-film capacitor；The key switch send the signal that is turned on or off to
The entire car controller VCU, electric machine controller MCU.
Further, methods described is specially：Under vehicle end of run key during electricity, entire car controller VCU detects key
After spoon switch is closed, the just main negative relay of master for communicating enable electrokinetic cell BMS by CAN disconnects；Work as entire car controller
After VCU receives the negative relay disconnection feedback states instruction of main positive master, then transmission " active discharge " is communicated by CAN and instructed
Enable electric machine controller MCU active discharges；Electric machine controller MCU detects key switch and closes and receive entire car controller
After VCU active discharges enable instruction, the high-tension electricity of thin-film capacitor is passed through into motor excitation power consumption in Preset Time by voltage drop
To safe voltage scope.
Further, the safe voltage scope is 0V~36V.
Further, the Preset Time is 2~5 seconds.
Further, BMS and main positive main negative relay are provided with the electrokinetic cell BMS, are controlled by BMS main positive main
The disconnection of negative relay and closure, to control the break-make of power supply between electrokinetic cell and external electric equipment.
The invention has the advantages that：The present invention can avoid personnel in car by electric system active discharge security strategy
High pressure Danger Electric shock risk is brought when touching electric machine controller MCU after electricity 3S under key, and can be reduced when personnel overhaul and waited
The high-tension electricity time drops in electric system, improves operation timeliness.
Brief description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the principle schematic of the inventive method.
Specific embodiment
Refer to shown in Fig. 1, a kind of method of electric automobile motor system active discharge, methods described need to provide vehicle control
Device VCU1 processed, electric machine controller MCU2, motor 3, electrokinetic cell BMS4 and key switch 5；Entire car controller VCU1 can be received
The key switch 5 of vehicle is turned on and off signal；After shutdown signal is received, entire car controller VCU1 passes through CAN
The just main negative relay 41 of master that communication enables electrokinetic cell BMS4 cut-offs；Entire car controller VCU1 is communicated by CAN and enabled
Electric machine controller MCU2 active discharges；The electric machine controller MCU2 receives unlatching key on or the pass of the key switch 5 of vehicle
Key off signals are closed, the instruction of entire car controller VCU1 active discharges is performed；Motor 3 is enabled during active discharge and realizes active discharge.
Wherein, the electric automobile motor system includes entire car controller VCU1, electric machine controller MCU2, motor 3, power
Battery BMS4 and key switch 5；The electrokinetic cell BMS4 is connected by CAN with the entire car controller VCU1, institute
State entire car controller VCU1 to be connected with the electric machine controller MCU2 by CAN, the electric machine controller MCU2 and motor 3
Electrical connection；The electric machine controller MCU2 is internally provided with interior thin-film capacitor (not shown), the key switch 5 send start or
The signal that person closes gives the entire car controller VCU1, electric machine controller MCU2.
Methods described is specially：Under vehicle end of run key during electricity, entire car controller VCU1 detects key switch 5 and closes
After closing, the just main negative relay 41 of master for communicating enable electrokinetic cell BMS4 by CAN disconnects；When entire car controller VCU1 connects
After receiving the main positive main negative disconnection of relay 41 feedback states instruction, then being communicated to send " active discharge " and instruct by CAN is made
Can electric machine controller MCU2 active discharges；Electric machine controller MCU2 detects key switch 5 and closes and receive entire car controller
After VCU1 active discharges enable instruction, the high-tension electricity of thin-film capacitor is passed through into motor excitation power consumption in Preset Time by voltage drop
To safe voltage scope.The safe voltage scope is 0V~36V.The Preset Time is 2~5 seconds.The electrokinetic cell BMS
BMS and main positive main negative relay are inside provided with, disconnection and the closure of main positive main negative relay are controlled by BMS, to control power
The break-make of power supply between battery and external electric equipment.
In a word, the present invention is by electric system active discharge security strategy, can avoid personnel after electricity 3S under car key
High pressure Danger Electric shock risk is brought when touching electric machine controller, and when can reduce wait electric system drop high-tension electricity when personnel overhaul
Between, improve operation timeliness.
Although the foregoing describing specific embodiment of the invention, those familiar with the art should manage
Solution, the specific embodiment described by us is merely exemplary, and rather than for the restriction to the scope of the present invention, is familiar with this
The technical staff in field should be covered of the invention in the equivalent modification and change made according to spirit of the invention
In scope of the claimed protection.
Claims (6)
1. a kind of method of electric automobile motor system active discharge, it is characterised in that：Methods described need to provide entire car controller
VCU, electric machine controller MCU, motor, electrokinetic cell BMS and key switch；Entire car controller VCU can receive the key of vehicle
Switch on or shutdown signal；After shutdown signal is received, entire car controller VCU is communicated by CAN makes motility
The just main negative relay of the master of battery BMS cut-offs；Entire car controller VCU is communicated by CAN and is enabled electric machine controller MCU actively
Electric discharge；The electric machine controller MCU receives the signal that is turned on and off of the key switch of vehicle, performs entire car controller VCU master
Dynamic electric discharge instruction；Motor is enabled during active discharge and realizes active discharge.
2. the method for a kind of electric automobile motor system active discharge according to claim 1, it is characterised in that：The electricity
Electrical automobile electric system includes entire car controller VCU, electric machine controller MCU, motor, electrokinetic cell BMS and key switch；
The electrokinetic cell BMS is connected by CAN with the entire car controller VCU, and the entire car controller VCU is total by CAN
Line is connected with the electric machine controller MCU, and the electric machine controller MCU is electrically connected with motor；Inside the electric machine controller MCU
It is provided with interior thin-film capacitor；The key switch sends the signal being turned on or off to the entire car controller VCU, motor control
Device MCU processed.
3. the method for a kind of electric automobile motor system active discharge according to claim 1, it is characterised in that：The side
Method is specially：Under vehicle end of run key during electricity, after entire car controller VCU detects key switch closing, by CAN
The just main negative relay of master that communication enables electrokinetic cell BMS disconnects；Break when entire car controller VCU receives main positive main negative relay
After opening feedback states instruction, then communicated by CAN and send " active discharge " instruction enable electric machine controller MCU active releases
Electricity；After electric machine controller MCU detects key switch closing and receives the enable instruction of entire car controller VCU active discharges, will
Voltage is down to safe voltage scope by the high-tension electricity of thin-film capacitor by motor excitation power consumption in Preset Time.
4. the method for a kind of electric automobile motor system active discharge according to claim 3, it is characterised in that：The peace
Full voltage range is 0V~36V.
5. the method for a kind of electric automobile motor system active discharge according to claim 3, it is characterised in that：It is described pre-
If the time is 2~5 seconds.
6. the method for a kind of electric automobile motor system active discharge according to claim 1, it is characterised in that：It is described dynamic
BMS and main positive main negative relay are provided with power battery BMS, disconnection and the closure of main positive main negative relay are controlled by BMS, with
The break-make of power supply between control electrokinetic cell and external electric equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710274003.8A CN106926706A (en) | 2017-04-25 | 2017-04-25 | A kind of method of electric automobile motor system active discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710274003.8A CN106926706A (en) | 2017-04-25 | 2017-04-25 | A kind of method of electric automobile motor system active discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106926706A true CN106926706A (en) | 2017-07-07 |
Family
ID=59438053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710274003.8A Pending CN106926706A (en) | 2017-04-25 | 2017-04-25 | A kind of method of electric automobile motor system active discharge |
Country Status (1)
| Country | Link |
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| CN (1) | CN106926706A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107499132A (en) * | 2017-08-21 | 2017-12-22 | 合肥力正新能源科技有限公司 | Electric vehicle power supply management method |
| CN107685656A (en) * | 2017-08-15 | 2018-02-13 | 南京越博动力系统股份有限公司 | The control circuit and its control method of electric machine controller active discharge in electric automobile |
| CN108016298A (en) * | 2017-10-24 | 2018-05-11 | 浙江吉利汽车研究院有限公司 | A kind of control method and control system for vehicle high-voltage system discharge |
| CN111146833A (en) * | 2019-12-11 | 2020-05-12 | 一汽解放汽车有限公司 | Discharge control method and device for high-voltage system, vehicle and storage medium |
| CN112356847A (en) * | 2020-10-20 | 2021-02-12 | 东风汽车集团有限公司 | Vehicle fault processing method, device and system and storage medium |
| CN112659919A (en) * | 2021-01-04 | 2021-04-16 | 东风汽车股份有限公司 | Power-on and power-off control strategy for motor controller of electric vehicle |
| CN112776604A (en) * | 2019-11-04 | 2021-05-11 | 广州汽车集团股份有限公司 | Active discharging device of automobile and automobile |
| CN114789665A (en) * | 2022-05-06 | 2022-07-26 | 中国第一汽车股份有限公司 | Electric vehicle control method and device, storage medium, processor and electronic device |
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| CN107685656A (en) * | 2017-08-15 | 2018-02-13 | 南京越博动力系统股份有限公司 | The control circuit and its control method of electric machine controller active discharge in electric automobile |
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| CN111146833A (en) * | 2019-12-11 | 2020-05-12 | 一汽解放汽车有限公司 | Discharge control method and device for high-voltage system, vehicle and storage medium |
| CN111146833B (en) * | 2019-12-11 | 2021-12-17 | 一汽解放汽车有限公司 | Discharge control method and device for high-voltage system, vehicle and storage medium |
| CN112356847A (en) * | 2020-10-20 | 2021-02-12 | 东风汽车集团有限公司 | Vehicle fault processing method, device and system and storage medium |
| CN112659919A (en) * | 2021-01-04 | 2021-04-16 | 东风汽车股份有限公司 | Power-on and power-off control strategy for motor controller of electric vehicle |
| CN114789665A (en) * | 2022-05-06 | 2022-07-26 | 中国第一汽车股份有限公司 | Electric vehicle control method and device, storage medium, processor and electronic device |
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Application publication date: 20170707 |
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