CN105480117A - Multiple-motor driving system for electric automobile and control method of multiple-motor driving system - Google Patents
Multiple-motor driving system for electric automobile and control method of multiple-motor driving system Download PDFInfo
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- CN105480117A CN105480117A CN201510654486.5A CN201510654486A CN105480117A CN 105480117 A CN105480117 A CN 105480117A CN 201510654486 A CN201510654486 A CN 201510654486A CN 105480117 A CN105480117 A CN 105480117A
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- control unit
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- electronlmobil
- driver element
- motors
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- 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
Abstract
The invention relates to a multiple-motor driving system for an electric automobile and a control method of the multiple-motor driving system. The multiple-motor driving system comprises only one control unit, a communication unit, at least two driving units, motors and a signal transducer which is used for collecting the running state of the motors, wherein the control unit is connected with the driving units through the communication unit; the driving units and the motors are in one-to-one correspondence and connection; an output terminal of the signal transducer is connected with the control unit. The control method comprises the following steps that the control unit receives operating instructions from a driver of the electric automobile and then sends out a control signal which is transmitted to the driving units through the communication unit, the driving units drive the motors to operate, and the signal transducer collects the running state of the motors in real-time and transmits information back to the control unit, so that the real-time monitoring of the motors is realized. According to the multiple-motor driving system and the control method thereof disclosed by the invention, one control unit can control a plurality of motors, so that the controlled run of the motors in serial shaft type connection and the controlled run of a plurality of separate wheel driving motors in the electric automobile are convenient to realize, the volume is reduced, the arrangement is flexible, and the cost is reduced.
Description
Technical field
The present invention relates to electronlmobil and manufacture field, particularly relate to a kind of electronlmobil multi-motors drive system and control method thereof.
Background technology
Ever-changing along with electronlmobil kind and form is also more and more higher to the requirement of drive motor and control system thereof.The electronlmobil that the driving of modular combination motor, many wheel individual drive etc. are novel, due to the application background that its desirable power combination, cost advantage, handling etc. are good, is subject to extensive concern in the industry.
In prior art, electronlmobil generally adopts single cover motor driven systems to do f-w-d or back-wheel drive, and a controller and a drive motor match, and namely a controller controls a drive motor.If a car adopts multiple electric motors to drive, then need the controller configuring respective numbers, cause whole drive system bulky, be unfavorable for car load flexible arrangement and cost control.Meanwhile, the driver element spacing distance of controller and motor is longer, and Signal transmissions between the two is easily interfered, the reliability that impact controls.
Summary of the invention
The present invention mainly solves in current electronlmobil the structure adopting controller and the configuration of motor one_to_one corresponding, multiple electric motors must configure the controller of respective numbers, cause whole drive system bulky, be unfavorable for the technical matters of car load flexible arrangement and cost control; There is provided a kind of electronlmobil multi-motors drive system and control method thereof, it needs a control unit with regard to realizing the control to multiple motor, effectively reduces the volume of whole drive system, is convenient to car load flexible arrangement, also reduces costs.
The present invention solves that spacing distance between current electronlmobil middle controller and the driver element of motor is longer simultaneously, and Signal transmissions between the two is easily interfered, the technical matters of the reliability that impact controls; There is provided a kind of electronlmobil multi-motors drive system and control method thereof, adopt ferry optics comunication between its control unit and driver element, speed of transmission is fast, and control effects is good, and antijamming capability is strong.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: electronlmobil multi-motors drive system of the present invention, comprise control unit, communication unit, driver element and motor, described control unit only has one, described driver element has two at least, the quantity of driver element is identical with number of motors, described control unit is connected with driver element through described communication unit, and driver element is connected with motor one_to_one corresponding.Control unit independently exists, and an electronlmobil only has the control unit that such, is arranged on electronlmobil relevant position.Motor is connected with driver element one_to_one corresponding, and quantity is identical, has two or more respectively, and motor and driver element can be independent arranged apart mutually, and connected by cable between the two, also accessible site is integrated and lays, and becomes integrated motor control setup.The operating order that electric vehicle driver sends is to the central controller of electronlmobil or directly to control unit, control unit receives the driver command or directly reception driver's operation instruction that transmit through central controller, control unit sends each corresponding instruction to corresponding driver element again through process, by communication unit move instruction between control unit and each driver element, realize the control of one-to-many.The present invention only needs a control unit with regard to realizing the control to multiple motor, effectively reduces the volume of whole drive system of electric automobile, is convenient to car load flexible arrangement, also reduces costs.
As preferably, described electronlmobil multi-motors drive system comprises the signal transducer gathering motor operating state, and the mouth of signal transducer is connected with described control unit.Signal transducer can adopt the motor status such as Hall element, magslip collecting device.Signal transducer motor in real time operative condition back information, to control unit, realize the real-time monitoring of motor.
As preferably, described motor string axle is connected, and the motor that string axle is connected only needs the signal transducer described in.The quantity of signal transducer is relevant with car load type of drive.Adopt centralized driving mode, each motor string axle is connected, and only needs a signal transducer to gather motor operating state.
As preferably, described motor is independent mutually, and each motor drives an electronlmobil wheel, and the quantity of described signal transducer is identical with number of motors, and signal transducer and motor one_to_one corresponding are arranged.The quantity of signal transducer is relevant with car load type of drive.Adopt a point wheel-drive mode, namely a drive wheel joins a motor, and each motor operating state can be different, then need multiple signal transducer, and the quantity of signal transducer is consistent with the quantity of drive wheel.Divide wheel-drive mode that Direct wheel drives or wheel hub can be adopted to drive.
As preferably, described control unit is powered by accumulator of electric car, and described driver element is powered by electric automobile power battery.Electric automobile power battery provides driving power.
As preferably, described communication unit adopts fiber optical transceiver, described control unit is connected with control unit optical fiber transceiver through FPGA field programmable gate array, control unit optical fiber transceiver is connected with driver element optical fiber transceiver through optical fiber, and driver element optical fiber transceiver is connected with described driver element through FPGA field programmable gate array.Communication unit is preferably ferry optics comunication, but is not limited to other implementations of CAN communication or those skilled in the art's accreditation.Adopt ferry optics comunication, speed of transmission is fast, and control effects is good, and antijamming capability is strong, and the longer distance be conducive between control unit and driver element is arranged.
As preferably, the power model that described driver element comprises a driving chip and is made up of six power tubes and six diodes, described control unit is connected with the input end of driving chip through communication unit, six PWM mouths of driving chip are connected with the grid of six power tubes of power model respectively, and three mouths of power model are connected with the three-phase input end of motor respectively.It is convenient to realize, and reliability is high.Certain power tube, diode are not limited to six, and multiple power tube also can be adopted to be connected in parallel to replace a power tube, multiple diodes in parallel to connect with the structure replacing a diode.
As preferably, described control unit adopts TMS570LS3137 micro controller system, and described driving chip adopts IR2181S driving chip.Certain control unit, driving chip also can adopt other similar chip to realize.
The control method of electronlmobil multi-motors drive system of the present invention is: described control unit receives electric vehicle driver operating order, through process, send control signal more correspondingly and be transferred to described driver element by described communication unit, driver element processes the control signal received, then the electric current exporting corresponding frequencies and corresponding size is to described motor.The operating order that electric vehicle driver sends is to the central controller of electronlmobil or directly to control unit, control unit receives the driver command or directly reception driver's operation instruction that transmit through central controller, control unit sends each corresponding instruction to corresponding driver element again through process, by communication unit move instruction between control unit and each driver element, realize the control of one-to-many.The present invention only needs a control unit with regard to realizing the control to multiple motor, effectively reduces the volume of whole drive system of electric automobile, is convenient to car load flexible arrangement, also reduces costs.Communication unit is preferably ferry optics comunication, and speed of transmission is fast, and control effects is good, and antijamming capability is strong, and the longer distance be conducive between control unit and driver element is arranged.
As preferably, described electronlmobil multi-motors drive system comprises the signal transducer gathering motor operating state, and the mouth of signal transducer is connected with described control unit; Described control method comprises: the rotating speed of the described motor described in signal transducer Real-time Collection and rotor-position, and the rotating speed of motor and rotor position information are returned to described control unit.Signal transducer motor in real time operative condition back information, to control unit, realize the real-time monitoring of motor.The quantity of signal transducer is relevant with car load type of drive.Adopt centralized driving mode, each motor string axle is connected, and only needs a signal transducer to gather motor operating state; Adopt a point wheel-drive mode, each drive wheel drives separately, and namely a drive wheel joins a motor, and each motor operating state can be different, then need multiple signal transducer, and the quantity of signal transducer is consistent with the quantity of drive wheel.
The invention has the beneficial effects as follows: realize a control unit to the control of multiple motor, and then conveniently realize going here and there in electronlmobil the controlling run of motor, the controlling run of multiple minute wheel drive motor that shaft type is connected, effectively reduce the volume of the whole drive system of electronlmobil, be convenient to car load flexible arrangement, also reduce costs, and adopt ferry optics comunication between control unit and driver element, speed of transmission is fast, control effects is good, antijamming capability is strong, thoroughly solves the problem that between control unit and driver element, remote transmission signal is easily disturbed.
Accompanying drawing explanation
Fig. 1 is a kind of connection structure schematic diagram of electronlmobil multi-motors drive system of the present invention.
Fig. 2 is another connection structure schematic diagram of electronlmobil multi-motors drive system of the present invention.
Fig. 3 is the more specific a kind of connection structure schematic diagram of electronlmobil multi-motors drive system of the present invention.
1. control units, 2. communication unit, 3. driver element in figure, 4. motor, 5. signal transducer, 6. accumulator of electric car, 7. electric automobile power battery, 8.FPGA field programmable gate array, 9.FPGA field programmable gate array, 21. control unit optical fiber transceivers, 22. optical fiber, 23. driver element optical fiber transceivers, 31. driving chip, 32. power tubes, 33. diodes, 34. power models.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: the electronlmobil multi-motors drive system of the present embodiment, as shown in Figure 1, comprise a control unit 1, three driver elements 3, three motors 4, signal transducer 5 and communication unit 2, the quantity of driver element 3 is identical with motor 4 quantity, control unit 1 is connected by communication unit 2 with driver element 3, and driver element 3 is connected with motor 4 one_to_one corresponding.In the present embodiment, electronlmobil adopts the centralized type of drive of car load, three motors 4 are connected in series to go here and there axle connection mode, form a motor combination, realize power superposition to export, electronlmobil is driven by this motor combination, therefore only needs installation signal transducer 5 to gather the running state of motor combination, comprise position of rotation and the rotor speed of motor, the mouth of signal transducer 5 is connected with the input end of control unit 1.Control unit 1 is powered by accumulator of electric car 6, and driver element 3 is powered by electric automobile power battery 7.
As shown in Figure 3, control unit 1 adopts chip microcontroller, and communication unit 2 adopts fiber optical transceiver, the power model 34 that each driver element 3 comprises a driving chip 31 and is made up of six power tubes 32 and six diodes 33.Control unit 1 is connected with control unit optical fiber transceiver 21 through FPGA field programmable gate array 8, control unit optical fiber transceiver 21 is connected with driver element optical fiber transceiver 23 through optical fiber 22, driver element optical fiber transceiver 23 is connected through the input end of FPGA field programmable gate array 9 with the driving chip 31 in driver element 3, six PWM mouths of driving chip 31 are connected with the grid of six power tubes 32 of power model 34 respectively, and three mouths of power model 34 are connected with the three-phase input end of motor 4 respectively.In power model 34, the connection structure of six power tubes and six diodes is known technologies, is not going to repeat.In the present embodiment, control unit 1 adopts TMS570LS3137 micro controller system, and fiber optical transceiver adopts NetLinkHTB-1100 fiber optical transceiver, and driving chip 31 adopts IR2181S driving chip, and signal transducer 5 adopts magslip.
Embodiment 2: the electronlmobil multi-motors drive system of the present embodiment, as shown in Figure 2, comprise a control unit 1, four driver elements 3, four motors 4, four signal transducers 5 and communication unit 2, the quantity of driver element 3 is identical with motor 4 quantity, control unit 1 is connected by communication unit 2 with driver element 3, and driver element 3 is connected with motor 4 one_to_one corresponding.In the present embodiment, electronlmobil adopts minute wheel individual drive mode, namely each drive wheel of electronlmobil drives by respective motor 4, therefore each motor 4 needs installation signal transducer 5, four signal transducers gather respectively four motors running state, comprise position of rotation and the rotor speed of motor, the mouth of four signal transducers 5 is connected with the input end of control unit 1 respectively.Control unit 1 is powered by accumulator of electric car 6, and driver element 3 is powered by electric automobile power battery 7.All the other structures are with embodiment 1.Certainly according to the demand of electric automobile whole tractive performance, the motor of varying number can be selected to realize single wheel drive, namely adopt an a drive wheel motor-driven structure, also can adopt the motor-driven structure that the multiple string axle of a drive wheel is connected.
The control method of above-mentioned electronlmobil multi-motors drive system is: control unit 1 receives the driver's operation instruction transmitted through electronlmobil central controller, through process, send control signal more correspondingly by FPGA field programmable gate array 8, control unit optical fiber transceiver 21, optical fiber 22 is transferred to corresponding driver element optical fiber transceiver 23, the instruction received is transferred to the driving chip 31 of driver element 3 by driver element optical fiber transceiver 23 by FPGA field programmable gate array 9, driving chip sends drive singal and processes through power model 34, export the electric current of corresponding frequencies and corresponding size to motor 4, drive motor 4 operates, the running state of signal transducer 5 motor in real time 4, comprises rotor-position and the rotating speed of motor, and by the information back that collects to control unit 1, realizes the real-time monitoring to motor.
The present invention realizes a control unit to the control of multiple motor, the controlling run of the motor that the shaft type that conveniently realizes going here and there in electronlmobil is connected, the controlling run of multiple minute wheel drive motor, effectively reduce the volume of the whole drive system of electronlmobil, be convenient to car load flexible arrangement, also reduce costs, and adopt ferry optics comunication between control unit and driver element, speed of transmission is fast, control effects is good, antijamming capability is strong, the problem that in thorough solution electronlmobil, between control unit and driver element, during long-distance transmissions, signal is easily disturbed, improve the reliability of electric automobile whole.
Claims (10)
1. an electronlmobil multi-motors drive system, it is characterized in that comprising control unit (1), communication unit (2), driver element (3) and motor (4), described control unit (1) only has one, described driver element (3) has two at least, the quantity of driver element (3) is identical with motor (4) quantity, described control unit (1) is connected with driver element (3) through described communication unit (2), and driver element (3) is connected with motor (4) one_to_one corresponding.
2. electronlmobil multi-motors drive system according to claim 1, it is characterized in that comprising the signal transducer (5) gathering motor operating state, the mouth of signal transducer (5) is connected with described control unit (1).
3. electronlmobil multi-motors drive system according to claim 2, it is characterized in that described motor (4) string axle is connected, the motor (4) that string axle is connected only needs the signal transducer (5) described in.
4. electronlmobil multi-motors drive system according to claim 2, it is characterized in that described motor (4) is independent mutually, each motor (4) drives an electronlmobil wheel, the quantity of described signal transducer (5) is identical with motor (4) quantity, and signal transducer (5) and motor (4) one_to_one corresponding are arranged.
5. electronlmobil multi-motors drive system according to claim 1 and 2, it is characterized in that described control unit (1) is powered by accumulator of electric car (6), described driver element (3) is powered by electric automobile power battery (7).
6. electronlmobil multi-motors drive system according to claim 1 and 2, it is characterized in that described communication unit (2) adopts fiber optical transceiver, described control unit (1) is connected with control unit optical fiber transceiver (21) through FPGA field programmable gate array (8), control unit optical fiber transceiver (21) is connected with driver element optical fiber transceiver (23) through optical fiber (22), and driver element optical fiber transceiver (23) is connected with described driver element (3) through FPGA field programmable gate array (9).
7. electronlmobil multi-motors drive system according to claim 1 and 2, it is characterized in that the power model (34) that described driver element (3) comprises a driving chip (31) and is made up of six power tubes (32) and six diodes (33), described control unit (1) is connected through the input end of communication unit (2) with driving chip (31), six PWM mouths of driving chip (31) are connected with the grid of six power tubes (32) of power model (34) respectively, three mouths of power model (34) are connected with the three-phase input end of motor (4) respectively.
8. electronlmobil multi-motors drive system according to claim 7, it is characterized in that described control unit (1) adopts TMS570LS3137 micro controller system, described driving chip (31) adopts IR2181S driving chip.
9. the control method of an electronlmobil multi-motors drive system as claimed in claim 1, it is characterized in that described control unit (1) receives electric vehicle driver operating order, through process, send control signal more correspondingly and be transferred to described driver element (3) by described communication unit (2), driver element (3) processes the control signal received, then the electric current exporting corresponding frequencies and corresponding size is to described motor (4).
10. the control method of electronlmobil multi-motors drive system according to claim 9, it is characterized in that described electronlmobil multi-motors drive system comprises the signal transducer (5) gathering motor operating state, the mouth of signal transducer (5) is connected with described control unit (1); Described control method comprises: the rotating speed of the described motor (4) described in signal transducer (5) Real-time Collection and rotor-position, and the rotating speed of motor (4) and rotor position information are returned to described control unit (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510654486.5A CN105480117A (en) | 2015-10-10 | 2015-10-10 | Multiple-motor driving system for electric automobile and control method of multiple-motor driving system |
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| CN201510654486.5A CN105480117A (en) | 2015-10-10 | 2015-10-10 | Multiple-motor driving system for electric automobile and control method of multiple-motor driving system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107422719A (en) * | 2017-06-08 | 2017-12-01 | 杭州伯坦科技工程有限公司 | Support the electric automobile drive assembly system and its control method of multi_motor control |
| CN107819417A (en) * | 2016-08-29 | 2018-03-20 | 湖南中车时代电动汽车股份有限公司 | More motor integrated manipulator Support Capacitor capacity calculation methods |
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