CN110588655A - Multi-mode control method for pure electric vehicle - Google Patents
Multi-mode control method for pure electric vehicle Download PDFInfo
- Publication number
- CN110588655A CN110588655A CN201910831336.5A CN201910831336A CN110588655A CN 110588655 A CN110588655 A CN 110588655A CN 201910831336 A CN201910831336 A CN 201910831336A CN 110588655 A CN110588655 A CN 110588655A
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- mode
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- vcu
- bms
- mileage
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
-
- 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
- B60L2240/423—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
-
- 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
Abstract
The invention provides a multi-mode control method for a pure electric vehicle, which comprises a normal mode, a battery long-life mode and a endurance long-mileage mode, wherein a user can select the long-life mode and the long-mileage mode besides the normal mode by adjusting the limit value of the battery during the use process, the long-life mode can effectively prolong the service life of the battery, and the long-mileage mode can effectively relieve the mileage anxiety of the user under the condition of low electric quantity and prolong the range of searching for a charging pile. The invention can effectively solve the contradiction between the use cost and the use convenience of the user.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a multi-mode control method for a pure electric automobile.
Background
The holding capacity of electric automobiles is increasing, the service life of the battery serving as a core part is always in conflict with the requirement of long endurance mileage of the automobile, and the use cost of a user and the use convenience of the user are also directly related. At present, mainly an automobile host factory determines a balance point of service life and endurance mileage, but in the actual use process, user requirements are complex, and other host factories do not provide corresponding development strategies for users to select and adjust according to the actual conditions of the consumers.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-mode control method for a pure electric vehicle, which enables a user to select a long-life mode and a long-mileage mode besides a normal mode by adjusting a battery limit value in the use process, wherein the long-life mode can effectively prolong the service life of a battery, and the long-mileage mode can effectively relieve mileage anxiety of the user under the condition of low electric quantity and prolong the range of searching for a charging pile.
The method comprises the steps of carrying out mode switching selection in a vehicle MP5 window, wherein the mode switching selection is divided into a normal mode, a battery long-life mode and a endurance long-mileage mode, and the service voltage ranges of the corresponding single batteries are 3.05V-4.15V, 3.1V-4.1V and 3.0V-4.2V respectively.
Further, after the key is powered on, the BMS sends a normal mode to the MP5 by default, the discharge allowable voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the corresponding range of the single voltage is 3.05V to 4.15V, the BMS sends a power MAP curve table of the VCU, the VCU obtains a torque value through analysis and calculation according to the current throttle opening state, the MAP curve table and the like, the torque value is sent to the MCU through a bus, and the torque and rotation speed MAP table of the MCU responds to the instruction of the VCU in real time to be executed by the motor.
Further, when the long-life mode is set through the MP5, the BMS stores the long-life mode and sends the long-life mode to the normal mode or the long-mileage mode of the MP5 to be switched to the long-life mode, the MP5 displays the long-life mode at the moment and confirms that the setting is successful, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0-100% of SOC, the corresponding range of the single voltage is 3.1-4.1V, the BMS sends a power MAP curve chart of the VCU, the VCU obtains a torque value through analysis calculation according to the current accelerator opening state, the MAP curve chart and the like, the torque value is sent to the MCU through a bus, and the torque speed MAP of the MCU responds to the instruction of the VCU in real time to be executed.
Further, when the long-mileage mode is set through the MP5, the BMS stores the long-mileage mode and sends the long-mileage mode to the normal mode of the MP5 or the long-life mode to be switched to the long-mileage mode, the MP5 displays that the long-mileage mode is set at the moment and confirms that the setting is successful, the allowable discharge voltage range of the VCU is within the range of 0-100% of the SOC by the BMS, the corresponding range of the cell voltage is 3.0-4.2V, the BMS sends the power MAP curve chart of the VCU, the VCU analyzes and calculates a torque value according to the current accelerator opening state, the MAP curve chart and the like, the torque value is sent to the MCU through a bus, and the torque and rotation speed MAP table of the MCU responds to the instruction of the VCU in real.
Further, after the long-mileage mode is set, the BMS starts to record the OFF gear state of the key, the BMS records that the detection key is changed from the ON state or the ACC state to the OFF state for 3 times, the long-mileage mode is automatically cleared, the normal mode is entered, at the moment, the discharge allowable voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the range corresponding to the single voltage is 3.05V to 4.15V, the BMS gives a power MAP curve chart of the VCU, the VCU obtains a torque value according to the current accelerator opening state, the MAP curve chart and other analysis and calculation, the torque value is sent to the MCU through a bus, and the MCU responds to the command of the VCU in real time according to the torque rotating speed MAP.
Has the advantages that: according to the invention, through the voltage regulation of the single battery and the regulation of the SOC discharging strategy, besides the mode recommended by the host factory, the user can select the long-life mode and the long-mileage mode according to the actual requirement, the long-life mode is used under the condition of no mileage anxiety, and the long-mileage mode is used under the condition of mileage anxiety, so that the contradiction between the use cost and the use convenience of the user can be effectively solved.
Drawings
FIG. 1 is a control block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
As shown in fig. 1, the present invention provides a multi-mode control method for a pure electric vehicle, which includes a normal mode, a long life mode, and a long mileage mode, where the settings of the three modes are mutually exclusive, and only one mode exists at any time. Specifically, after the key is powered on, the BMS sends the normal mode to the MP5 by default, and the state on the MP5 is the normal mode, for example, if the long life mode or the long mileage mode is not manually set, the normal mode is always maintained. Under the condition, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the range corresponding to the single voltage is 3.05V to 4.15V, the BMS gives a power MAP curve table to the VCU, the VCU obtains a torque value through analysis and calculation according to the current accelerator opening state, the MAP curve table and the like, the torque value is sent to the MCU through a bus, the MCU torque rotating speed MAP table responds to the instruction of the VCU in real time to be executed by the motor, specifically, the BMS stores three-dimensional tables corresponding to different temperatures, different single voltages and different battery capacities of a battery pack, and the BMS searches the corresponding tables and calculates different values according to different modes.
If a user needs to set a long-life mode, the user firstly enters an MP5 interface to find an EV setting item, after the setting item is entered, three mode states are displayed, an area corresponding to the long-mileage mode is clicked, the MP5 sends the states to a BMS through CAN bus information, after the BMS receives the signals, the states are stored and fed back to the MP5 to be the long-mileage mode, then the MP5 displays that the long-mileage mode is successfully set, the background processing in the whole setting process is millisecond level, and therefore the user feels that real-time response is achieved after the setting. And if the user does not switch the mode in the later period after setting the long service life mode, keeping the long service life mode unchanged all the time. In this case, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the corresponding range of the single voltage is 3.1V to 4.1V, the BMS supplies power MAP curve tables to the VCU, the VCU analyzes and calculates a torque value according to the current throttle opening state, the MAP curve tables and the like, the torque value is sent to the MCU through a bus, and the MCU torque rotating speed MAP tables respond the command of the VCU in real time to be executed by the motor.
If the user now sets the long-mileage mode through the MP5, the BMS needs to store the long-mileage mode and switch the normal mode or the long-life mode issued to the MP5 to the long-mileage mode so that the MP5 displays the long-mileage mode at this time and confirms that the setting is successful. In the long mileage mode, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the corresponding range of the single voltage is 3.0V to 4.2V, the BMS supplies power to a power MAP curve table of the VCU, the VCU analyzes and calculates a torque value according to the current throttle opening state, the MAP curve table and the like, the torque value is sent to the MCU through a bus, and the torque and rotation speed MAP table of the MCU responds to the instruction of the VCU in real time to be executed by the motor.
If the user sets a long-mileage mode, the BMS starts to record the OFF gear state of the key, the BMS records that the detection key is changed from the ON state or the ACC state to the OFF state for 3 times, the long-mileage mode is automatically cleared, the normal mode is entered, the discharge allowable voltage range of the VCU from the BMS is in the SOC range of 0% to 100%, the corresponding range of the single voltage is 3.05V to 4.15V, the BMS sends a power MAP curve table of the VCU, the VCU analyzes and calculates a torque value according to the current accelerator opening state, the MAP curve table and the like, the torque value is sent to the MCU through a bus, and the MCU responds the instruction of the VCU in real time to execute the motor according to the torque rotating speed MAP table. If the user needs to use the long-mileage mode, the mode switching is performed again by the MP 5. The long-mileage mode is not stored and maintained, the design aim is to provide an emergency scheme for a user, and when the vehicle is away from the destination of the user and cannot reach the destination of the user in the normal mode and only has a distance of several kilometers, the long-mileage mode can be switched to ensure that the user can drive the vehicle to the destination. Emergency use is possible in such special cases.
For the strategy, the BMS needs to record and store 2 variables, one is the storage of a normal, long-life, long-mileage mode, and the other is to record the number of state detections of the OFF gear in the long-mileage mode. Meanwhile, the BMS can automatically correct the change of the SOC from 0% to 100% according to different threshold points of the single battery under different modes.
Claims (5)
1. A multi-mode control method for a pure electric vehicle is characterized in that mode switching selection is carried out in a vehicle MP5 window and divided into a normal mode, a battery long-life mode and a endurance long-mileage mode, and the service voltage ranges of single batteries respectively correspond to 3.05V-4.15V, 3.1V-4.1V and 3.0V-4.2V.
2. The pure electric vehicle multi-mode control method according to claim 1, characterized in that after a key is powered on, the BMS sends a normal mode to the MP5 by default, the discharge allowable voltage range of the BMS to the VCU is in the range of 0% to 100% of the SOC, the range corresponding to the single voltage is 3.05V to 4.15V, the BMS sends a power MAP curve table to the VCU, the VCU analyzes and calculates a torque value according to the current throttle opening state, the MAP curve table and the like, the torque value is sent to the MCU through a bus, and the MCU torque and rotation speed MAP table responds to a command of the VCU in real time to be executed by the motor.
3. The pure electric vehicle multi-mode control method according to claim 1, characterized in that when a long life mode is set through the MP5, the BMS stores the long life mode and sends the long life mode to the MP5, the normal mode or the long mileage mode is switched to the long life mode, the MP5 displays the long life mode at this time and confirms the successful setting, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of SOC, the range of the cell voltage is 3.1V to 4.1V, the BMS sends the VCU power MAP, the VCU analyzes and calculates a torque value according to the current throttle opening state, the MAP and the like, the torque value is sent to the MCU through a bus, and the MCU torque MAP responds to the command of the VCU in real time to the motor.
4. The pure electric vehicle multi-mode control method according to claim 1, characterized in that when the long-mileage mode is set by the MP5, the BMS stores the long-mileage mode and sends the long-mileage mode to the MP5, the normal mode or the long-life mode is switched to the long-mileage mode, the MP5 displays the long-mileage mode at that time and confirms the successful setting, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the range corresponding to the cell voltage is 3.0V to 4.2V, the BMS sends the cell voltage to the VCU power MAP curve table, the VCU analyzes and calculates a torque value according to the current throttle opening state, the MAP curve table and the like, the torque value is sent to the MCU through the bus, and the MCU torque and rotation speed MAP table responds to the command of the VCU in real time to the motor for execution.
5. The pure electric vehicle multi-mode control method according to claim 4, characterized in that after the long-mileage mode is set, the BMS starts to record the OFF state of the key, the BMS records that the detection key is changed from the ON state or the ACC state to the OFF state for 3 times, then the long-mileage mode is automatically cleared, and the normal mode is entered, at this time, the allowable discharging voltage range of the BMS to the VCU is in the interval of 0% to 100% of the SOC, the range corresponding to the cell voltage is 3.05V to 4.15V, the BMS gives the VCU power MAP curve table, the VCU gives a torque value through analysis calculation such as the MAP curve table according to the current accelerator opening state, the MCU gives a real-time response to the command of the VCU according to the torque rotating speed MAP table, and the MCU gives the motor execution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831336.5A CN110588655A (en) | 2019-09-04 | 2019-09-04 | Multi-mode control method for pure electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831336.5A CN110588655A (en) | 2019-09-04 | 2019-09-04 | Multi-mode control method for pure electric vehicle |
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| CN110588655A true CN110588655A (en) | 2019-12-20 |
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| CN201910831336.5A Pending CN110588655A (en) | 2019-09-04 | 2019-09-04 | Multi-mode control method for pure electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071370A (en) * | 2021-03-24 | 2021-07-06 | 浙江合众新能源汽车有限公司 | Management method of low-voltage lithium battery of electric automobile and complete automobile power supply switching method |
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| CN108790938A (en) * | 2018-04-25 | 2018-11-13 | 武汉理工大学 | Motor torque control method for different driving modes |
| CN109606120A (en) * | 2019-01-15 | 2019-04-12 | 深圳四海万联科技有限公司 | Electric car course continuation mileage real-time update system and method based on big data |
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Application publication date: 20191220 |