CN102294963A - Double-motor double-energy compound driving system - Google Patents

Double-motor double-energy compound driving system Download PDF

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Publication number
CN102294963A
CN102294963A CN2011101538465A CN201110153846A CN102294963A CN 102294963 A CN102294963 A CN 102294963A CN 2011101538465 A CN2011101538465 A CN 2011101538465A CN 201110153846 A CN201110153846 A CN 201110153846A CN 102294963 A CN102294963 A CN 102294963A
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China
Prior art keywords
motor
super capacitor
double
drive motor
auxilliary
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Pending
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CN2011101538465A
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Chinese (zh)
Inventor
张兆龙
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Shanghai Zhongke Shenjiang Electric Vehicle Co Ltd
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Shanghai Zhongke Shenjiang Electric Vehicle Co Ltd
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Priority to CN2011101538465A priority Critical patent/CN102294963A/en
Publication of CN102294963A publication Critical patent/CN102294963A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Abstract

The invention provides a double-motor double-energy compound driving system comprising a power battery pack, a super capacitor group, a DC (Direct Current)/DC converter, a main driving motor, a main driving motor controller, an assistant driving motor, an assistant driving motor controller, an assistant transmission shaft, a main driving shaft and a double-input coupling drive axle, wherein the super capacitor group is in charge of supplying power to the assistant driving motor; the assistant driving motor provides an assistant driving moment of force in the processes of vehicle starting, quickening and climbing, and a braking moment is provided for the motor in braking feedback; the electric energy in the braking feedback of the assistant motor is completely adsorbed by the super capacitor; the power battery pack is mainly in charge of supplying power to the main driving motor and the motor-driven accessories of other vehicles; when electric quantity stored by the super capacitor group is lower than a certain limit value, the power battery pack carries out compensative constant-power charging by the DC/DC converter; and the output torques of the main driving motor and the assistant driving motor satisfy the ramp starting and quickening performance of vehicles by double-input drive axle coupling.

Description

A kind of double-motor dual energy sources compound drive system
Technical field
Patent of the present invention relates to a kind of drive system of electric automobile.
Background technology
Because that electronlmobil has is pollution-free, noise is little, characteristics such as energy-conservation, makes ev industry begin high speed development.Domestic pure motorized motions technology adopts substantially now: single supply (electrokinetic cell/super capacitor) and single drive motor or composite power source (dynamics battery-super capacitance) and two kinds of forms of single drive motor.The former medium power battery because vehicle has frequent acceleration under the operating mode of city, causes the frequent heavy-current discharge of power battery pack as the vehicle of unique energy source, has reduced the energy efficiency and the service life of battery pack.When vehicle adopts feedback braking simultaneously, because the charging current of electrokinetic cell and the restriction of voltage make that the energy conversion efficiency of feedback braking is lower.Super capacitor, can only travel as short distance because the restriction of super capacitor energy-storage capacity is shortened its continuation of the journey mileage greatly as the vehicle of unique energy source among the former, restricts its commercial application.Though adopt hybrid power system for the latter, but because the charge and discharge characteristic of super capacitor and electrokinetic cell is different, need special circuit of design and control policy ability dynamics of management battery-super capacitor charge and discharge characteristic, practical application also has certain technical risk.The vehicle that adopts single drive motor is for satisfying not only needs gearbox device of dynamic property demand, and the drive motor for heavily stressed commercial vehicle/comm..vehicle can make the volume of motor become big complicated more with control because of the demand of moment of torsion and rotating speed, the cost of drive motor increases severely, and the reliability of car load drive system will descend.
Summary of the invention
The objective of the invention is to propose a kind of two drive motor that are applicable to the rear drive system, the compound drive system of dynamics battery-super capacitance dual energy sources system for overcoming the weak point of prior art.
Through the application of this compound drive system, the electrokinetic cell outgoing current is mild under the operating mode such as quicken, go up a slope, overtake other vehicles, peak current is little, discharge efficiency height, long service life starting can to make vehicle; When battery pack SOC was low, drive system still can guarantee normal power output capacity; Super capacitor directly absorbs auxiliary drive motor feedback braking energy, energy conversion efficiency height.Electrokinetic cell can be the permanent power charging of compensating property of super capacitor by the DC/DC converter simultaneously.
This system does not only have transmission system but also can realize infinite speed variation by the coupling control of double-motor.Two drive motor are respectively by motor controller controls independently, break down at an electric system, perhaps some the breaking down in two power-supply systems (as super capacitor and electrokinetic cell) time, vehicle still can travel with separate unit motor, single power-supply system.Like this, vehicle can continue to finish route with lower performance, perhaps can withdraw danger point at least---as crossing, tunnel or expressway.
This compound drive system comprises: power battery pack, super capacitor group, DC/DC changer, main drive motor, main drive motor controller, auxilliary drive motor, auxilliary drive motor controller, auxilliary transmission shaft, main driving axle and dual input couple drive bridge.Its annexation is: the input end of DC/DC changer links to each other with power battery pack, and mouth links to each other with the super capacitor group.The high pressure of super capacitor group is powered to auxilliary drive motor through the inversion of auxiliary motor controller, and auxilliary drive motor power inputs to the auxilliary input end of drive axle through auxilliary transmission shaft.The high pressure of power battery pack is powered to main drive motor through the inversion of main drive motor controller, and main drive motor power inputs to the primary input end of drive axle through main driving axle.
Principle of work is as follows: the super capacitor group is responsible for auxilliary drive motor is powered, and auxilliary drive motor provides motor braking moment for providing assistive drive moment in vehicle launch, acceleration, the upward slope process in the feedback braking.The electric energy of the feedback braking of helper motor is absorbed by super capacitor fully.Power battery pack is responsible for main drive motor and all the other vehicle electric auxiliaries are powered.When the electric weight of being stored when the super capacitor group is lower than certain limit value, by power battery pack through the permanent power charging of compensating property of DC/DC changer.Main drive motor power satisfies the power demand of vehicle highest stabilizing speed, and the output torque of main drive motor and auxiliary drive motor satisfies the uphill starting and the acceleration capability of vehicle through the coupling of dual input drive axle.
The present invention has made full use of the advantage that super capacitor charges and discharge power height, efficient height and electrokinetic cell high-energy-density, has overcome problems such as frequent peak current discharge of electrokinetic cell and feedback braking energy absorption efficiency are low.Realized that by the coupling of double-motor the infinite speed variation ability of no speed-changing mechanism, main motor and helper motor all can finish the vehicle low performance and drive, after guaranteeing that a motor breaks down, the vehicle stretch journey of also can " walking lamely ".
Description of drawings
Fig. 1 is the structural representation of double-motor dual energy sources compound drive system of the present invention.
1 dual input couple drive bridge wherein, 2 auxilliary transmission shafts, 3 auxilliary drive motor, 4 auxilliary drive motor controller, 5 super capacitor groups, 6 DC/DC changers, 7 power battery pack, 8 main drive motor controllers, 9 main drive motors, 10 main driving axles.
The specific embodiment
With reference to accompanying drawing, the specific embodiments of invention will be narrated further.
The compound drive system framework of two drive motor of the employing that the present invention proposes and dynamics battery-super capacitance dual energy sources comprises (7) power battery pack, (5) super capacitor group, (6) DC/DC changer, (9) main drive motor, (8) main drive motor controller, (3) auxilliary drive motor, (4) auxilliary drive motor controller, (2) auxilliary transmission shaft, (10) main driving axle, (1) dual input couple drive bridge and the control unit of not listing at accompanying drawing, as entire car controller, super capacitance management system, power battery management system.Its annexation is: the input end of (6) DC/DC changer links to each other with (7) power battery pack, and mouth links to each other with (5) super capacitor group.When super capacitance management system detects electric weight that (5) super capacitor group stored and is lower than certain value, the demand charge information is sent to entire car controller by the CAN communication, by entire car controller according to the voltage of electrokinetic cell, super capacitor and the operating condition of electric weight and vehicle, control information is sent to (6) DC/DC changer, realize the permanent power charging of compensating property of (5) super capacitor group.(5) high-voltage output end of super capacitor group links to each other with the direct-flow input end of (4) auxiliary motor controller, (4) the auxiliary motor controller is controlled (3) auxilliary drive motor through modes such as contravariant vector frequency conversions, and the takeoff output of (3) auxilliary drive motor inputs to the auxiliary input end of (1) dual input drive axle through (2) auxilliary transmission shaft.The direct-flow input end of main drive motor controller (8) links to each other with power battery pack (7) high-voltage output end, control main drive motor (9) through modes such as contravariant vector frequency conversions, the takeoff output of main drive motor (9) inputs to the primary input end of (1) dual input drive axle through transmission shaft.Entire car controller is according to the acceleration pedal signal of gathering, gear signal, brake pedal signal, super capacitor group and electrokinetic cell, information such as the speed of a motor vehicle according to perfect control strategy, are responsible for two drive motor are carried out the braking energy feedback control of moment of torsion output control and auxilliary drive motor.
The transmitting ratio 6.17 * 1.48 of the dual input back axle of the present embodiment; Electrokinetic cell adopts lithium iron phosphate dynamic battery, and monomer nominal voltage/capacity is 3.2V, and 50Ah, assembled battery total voltage/capacity are 600V, 500Ah; Super capacitor monomer nominal voltage/capacity is 2.7V/10000F, and super capacitor group total voltage/electric capacity is 600V/45F; DC/DC conv rating horsepower 30kw; Main drive motor adopts vector controlled permagnetic synchronous motor, rating horsepower 100kW, peak power 180kW; Auxilliary drive motor adopts vector controlled permagnetic synchronous motor, rating horsepower 60kW, peak power 120kW.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Those skilled in the art can make replacement or modification to contents more of the present invention according to content disclosed by the invention and the art technology of being grasped; but these replacements or modification should not be considered as breaking away from design of the present invention, and these replacements or modification are all in the claimed claim scope of the present invention.

Claims (5)

1. a double-motor dual energy sources compound drive system is characterized in that this system is made up of power battery pack, super capacitor group, DC/DC changer, main drive motor, main drive motor controller, auxilliary drive motor, auxilliary drive motor controller, auxilliary transmission shaft, main driving axle and dual input couple drive bridge.
2. the double-motor dual energy sources compound drive system described in the claim 1, the input end that it is characterized in that the DC/DC changer links to each other with power battery pack, mouth links to each other with the super capacitor group, the high pressure of super capacitor group is powered to auxilliary drive motor through the inversion of auxiliary motor controller, auxilliary drive motor power inputs to the auxilliary input end of drive axle through auxilliary transmission shaft, the high pressure of power battery pack is powered to main drive motor through the inversion of main drive motor controller, and main drive motor power inputs to the primary input end of drive axle through main driving axle.
3. the double-motor dual energy sources compound drive system described in the claim 2 is characterized in that super capacitor absorbs the electric energy of the feedback braking of helper motor.
4. the double-motor dual energy sources compound drive system described in the claim 2 is characterized in that when electric weight that the super capacitor group is stored is lower than certain limit value, by power battery pack through the permanent power charging of compensating property of DC/DC changer.
5. the double-motor dual energy sources compound drive system described in the claim 2, it is characterized in that electrokinetic cell adopts lithium iron phosphate dynamic battery, monomer nominal voltage/capacity is 3.2V, 50Ah, assembled battery total voltage/capacity is 600V, 500Ah, super capacitor monomer nominal voltage/capacity is 2.7V/10000F, super capacitor group total voltage/electric capacity is 600V/45F, DC/DC conv rating horsepower 30kw, main drive motor adopts vector controlled permagnetic synchronous motor, rating horsepower 100kW, peak power 180kW; Auxilliary drive motor adopts vector controlled permagnetic synchronous motor, rating horsepower 60kw, peak power 120kw.
CN2011101538465A 2011-06-09 2011-06-09 Double-motor double-energy compound driving system Pending CN102294963A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102582461A (en) * 2012-02-17 2012-07-18 扬州亚星客车股份有限公司 Range-extended C+B dynamical system
CN102774292A (en) * 2012-08-20 2012-11-14 天津市松正电动汽车技术股份有限公司 Dual-motor drive system
CN103612569A (en) * 2013-06-08 2014-03-05 苏州市莱赛电车技术有限公司 Power source system for electric vehicle
CN103895524A (en) * 2012-12-27 2014-07-02 比亚迪股份有限公司 Driving system of electric motor coach and driving control method thereof
CN104842817A (en) * 2014-07-03 2015-08-19 北汽福田汽车股份有限公司 Vehicle control method and system
CN104960431A (en) * 2015-07-21 2015-10-07 哈尔滨理工大学 Energy distributing device and method for electric car based on lithium-rich manganese-based lithium battery
CN105408162A (en) * 2013-04-30 2016-03-16 台湾立凯绿能移动股份有限公司 Power supply driving system
CN106564406A (en) * 2016-11-02 2017-04-19 孙立 Dual-energy powertrain system for electric traffic tool and control method of dual-energy powertrain system
CN107139779A (en) * 2017-05-25 2017-09-08 中车永济电机有限公司 The control method of guide rail electric car
CN107487193A (en) * 2016-07-18 2017-12-19 宝沃汽车(中国)有限公司 A kind of EMS, method and the electric automobile of composite power source electric automobile
CN107539133A (en) * 2017-08-25 2018-01-05 东莞中山大学研究院 The generation method and device of a kind of control strategy for regenerative braking
CN108544911A (en) * 2018-06-21 2018-09-18 安徽维德电源有限公司 A kind of electric industry vehicle drive system and its control method
CN109130890A (en) * 2018-09-28 2019-01-04 西安交通大学 A kind of composite power source topological structure and control method based on dual-motor electric automobile
CN109664773A (en) * 2017-10-13 2019-04-23 郑州宇通客车股份有限公司 A kind of the parking on ramp control method and system of electric car
CN113928131A (en) * 2020-07-10 2022-01-14 的卢技术有限公司 Battery safety backup method and system based on double-battery design
CN114425953A (en) * 2022-02-23 2022-05-03 江苏联成开拓集团有限公司 New energy automobile auxiliary power control system and control method thereof

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CN1593981A (en) * 2004-06-30 2005-03-16 武汉理工大学 Multi-stage highly effective variable-frequency control electric automobile driving device and control method thereof
CN1785707A (en) * 2005-12-09 2006-06-14 清华大学 Fuel battery automobile mixed power system using super capacity as auxiliary power device
JP2007244124A (en) * 2006-03-09 2007-09-20 Toyota Motor Corp Power system for vehicle drive
CN1915703A (en) * 2006-08-31 2007-02-21 上海燃料电池汽车动力系统有限公司 Power drive system of fuel-cell vehicle possessing redundant fault tolerant
CN101524967A (en) * 2008-03-04 2009-09-09 现代自动车株式会社 Hybrid fuel cell vehicle with multi-power source and multi-drive system, and control method thereof
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Cited By (25)

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Publication number Priority date Publication date Assignee Title
CN102582461A (en) * 2012-02-17 2012-07-18 扬州亚星客车股份有限公司 Range-extended C+B dynamical system
CN102582461B (en) * 2012-02-17 2015-04-22 扬州亚星客车股份有限公司 Range-extended C+B dynamical system
CN102774292A (en) * 2012-08-20 2012-11-14 天津市松正电动汽车技术股份有限公司 Dual-motor drive system
CN103895524B (en) * 2012-12-27 2017-10-31 比亚迪股份有限公司 The drive system and its drive control method of a kind of electric motor coach
CN103895524A (en) * 2012-12-27 2014-07-02 比亚迪股份有限公司 Driving system of electric motor coach and driving control method thereof
JP2016519561A (en) * 2013-04-30 2016-06-30 台湾立凱緑能移動股▲ふん▼有限公司 Power drive system
CN105408162A (en) * 2013-04-30 2016-03-16 台湾立凯绿能移动股份有限公司 Power supply driving system
CN105408162B (en) * 2013-04-30 2017-11-21 英属盖曼群岛商立凯绿能移动科技股份有限公司 Power drives system
US9688158B2 (en) 2013-04-30 2017-06-27 Aleees Eco Ark (Cayman) Co., Ltd. Power driving system
CN103612569A (en) * 2013-06-08 2014-03-05 苏州市莱赛电车技术有限公司 Power source system for electric vehicle
CN104842817A (en) * 2014-07-03 2015-08-19 北汽福田汽车股份有限公司 Vehicle control method and system
CN104842817B (en) * 2014-07-03 2017-03-15 北汽福田汽车股份有限公司 The control method and system of vehicle
CN104960431A (en) * 2015-07-21 2015-10-07 哈尔滨理工大学 Energy distributing device and method for electric car based on lithium-rich manganese-based lithium battery
CN107487193A (en) * 2016-07-18 2017-12-19 宝沃汽车(中国)有限公司 A kind of EMS, method and the electric automobile of composite power source electric automobile
CN106564406B (en) * 2016-11-02 2019-07-23 孙立 Dual-energy source power assembly system and its control method for electric vehicle
CN106564406A (en) * 2016-11-02 2017-04-19 孙立 Dual-energy powertrain system for electric traffic tool and control method of dual-energy powertrain system
CN107139779A (en) * 2017-05-25 2017-09-08 中车永济电机有限公司 The control method of guide rail electric car
CN107539133A (en) * 2017-08-25 2018-01-05 东莞中山大学研究院 The generation method and device of a kind of control strategy for regenerative braking
CN107539133B (en) * 2017-08-25 2019-08-30 东莞中山大学研究院 A kind of generation method and device of control strategy for regenerative braking
CN109664773A (en) * 2017-10-13 2019-04-23 郑州宇通客车股份有限公司 A kind of the parking on ramp control method and system of electric car
CN108544911A (en) * 2018-06-21 2018-09-18 安徽维德电源有限公司 A kind of electric industry vehicle drive system and its control method
CN108544911B (en) * 2018-06-21 2023-11-17 安徽维德电源有限公司 Driving system of electric industrial vehicle and control method thereof
CN109130890A (en) * 2018-09-28 2019-01-04 西安交通大学 A kind of composite power source topological structure and control method based on dual-motor electric automobile
CN113928131A (en) * 2020-07-10 2022-01-14 的卢技术有限公司 Battery safety backup method and system based on double-battery design
CN114425953A (en) * 2022-02-23 2022-05-03 江苏联成开拓集团有限公司 New energy automobile auxiliary power control system and control method thereof

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Application publication date: 20111228