CN102294963A - A dual motor dual energy composite drive system - Google Patents

A dual motor dual energy composite drive system Download PDF

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CN102294963A
CN102294963A CN 201110153846 CN201110153846A CN102294963A CN 102294963 A CN102294963 A CN 102294963A CN 201110153846 CN201110153846 CN 201110153846 CN 201110153846 A CN201110153846 A CN 201110153846A CN 102294963 A CN102294963 A CN 102294963A
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CN 201110153846
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Chinese (zh)
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张兆龙
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上海中科深江电动车辆有限公司
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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 for electromobility
    • Y02T10/7005Batteries
    • 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 for electromobility
    • Y02T10/7022Capacitors, supercapacitors or ultracapacitors
    • 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
    • Y02T10/7208Electric power conversion within the vehicle
    • Y02T10/7216DC to DC power conversion
    • 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
    • Y02T10/7258Optimisation of vehicle performance
    • Y02T10/7275Desired performance achievement

Abstract

本发明提供了一种双电机双能源复合驱动系统,其包括动力电池组、超级电容组、DC/DC变换器、主驱动电机、主驱动电机控制器、辅驱动电机、辅驱动电机控制器、辅传动轴、主传动轴及双输入耦合驱动桥。 The present invention provides a dual-motor dual-energy composite drive system including a power battery, super capacitor bank, DC / DC converters, the main drive motor, the main drive motor controller, the auxiliary driving motor, the auxiliary driving motor controller, the secondary drive shaft, the main drive shaft and two axle drive input coupling. 超级电容组负责对辅驱动电机进行供电,辅驱动电机为车辆启动、加速、上坡过程中提供辅助驱动力矩,制动回馈中提供电机制动力矩。 Group responsible for ultracapacitors Auxiliary drive motor power, auxiliary drive motor of the vehicle start, acceleration, uphill drive torque supplied during an auxiliary brake is provided in the motor braking torque feedback. 辅助电机制动回馈的电能完全由超级电容吸收。 Regenerative Braking power assist motor is completely absorbed by the super capacitor. 动力电池组负责对主驱动电机和其余车辆电动辅件进行供电。 Group is responsible for the main battery and the remainder of the vehicle drive motor electric powered accessories. 当超级电容组所存储的电量低于一定的限值时,由动力电池组经DC/DC变换器进行补偿性恒功率充电。 When the super capacitor power group stored below a certain limit, by a compensatory constant power charging the power battery via the DC / DC converter. 主驱动电机和辅驱动电机的输出扭矩经双输入驱动桥耦合满足车辆的坡道起步和加速性能。 Auxiliary drive motor and the main drive motor output torque is coupled via two-input drive axle to meet hill start and acceleration performance of the vehicle.

Description

一种双电机双能源复合驱动系统 A dual motor dual energy composite drive system

技术领域 FIELD

[0001] 本发明专利涉及一种电动汽车驱动系统。 Patent [0001] The present relates to an electric vehicle drive system. 背景技术 Background technique

[0002] 由于电动汽车具有无污染、噪声小、节能等特点,使得电动汽车产业开始高速发展。 [0002] As the electric car with no pollution, low noise, energy-saving features, making the electric car industry starting to grow rapidly. 现在国内纯电动驱动技术基本采用:单电源(动力电池/超级电容)和单驱动电机或者复合电源(动力电池-超级电容)和单驱动电机两种形式。 Now the domestic use of substantially pure electric drive technology: single supply (battery / supercapacitor) and a single drive motor or a hybrid power (battery - ultracapacitor) and two forms of a single drive motor. 前者中动力电池作为唯一能量来源的车辆,由于在城市工况下车辆具有频繁加速的特点,导致动力电池组频繁大电流放电,降低了电池组的能量效率和使用寿命。 The former battery as the sole source of energy of the vehicle, because of the frequent acceleration characteristics in the urban condition the vehicle, leading to frequent large traction battery discharge current, reduces the energy efficiency and service life of the battery pack. 同时车辆采用制动回馈时,由于动力电池的充电电流和电压的限制,使得制动回馈的能量转化效率较低。 With the brake while the vehicle is low feedback, due to the limitation of the charging current and voltage of the battery power, the brake feedback energy conversion efficiency. 前者中超级电容作为唯一能量来源的车辆,由于超级电容储能容量的限制,使其续航里程大大缩短,只能作为短途行驶, 制约其产业化应用。 The former super capacitor as the sole energy source of the vehicle, due to the limitations of super capacitor energy storage capacity, so the mileage is shortened, only as a short-distance travel, restricting their industrial application. 对于后者虽然采用复合电源系统,但由于超级电容和动力电池的充、放电特性不同,需设计专门的电路和控制策略才能管理动力电池_超级电容充放电特性,实际应用还有一定的技术难度。 Although the latter composite power supply system, but due to charge the battery and supercapacitor, different discharge characteristics, need to design special circuits to manage and control strategy _ super capacitor battery charge and discharge characteristics, there are some practical technical difficulties . 采用单驱动电机的车辆为满足动力性需求不仅需要变速箱装置,并且对于重载的商用车的驱动电机会因扭矩和转速的需求使得电机的体积变大和控制更加复杂,驱动电机的成本剧增,整车驱动系统的可靠性将会下降。 A single drive motor vehicle to meet the power demand not only the transmission means, and for driving the overloaded commercial opportunities due to demand torque and rotational speed of the motor so that the volume becomes larger and more complex control, the cost of driving motor surge reliability vehicle drive system will be reduced.

发明内容 SUMMARY

[0003] 本发明的目的是为克服已有技术的不足之处,提出一种适用于后驱动系统的双驱动电机,动力电池-超级电容双能源系统的复合驱动系统。 [0003] The object of the present invention to overcome the deficiencies of the prior art, provides a drive system suitable for the dual drive motor, battery - ultracapacitor dual energy systems composite drive system.

[0004] 经过该复合驱动系统的应用,可以使车辆在启动加速、上坡、超车等工况下动力电池输出电流平缓、峰值电流小,放电效率高、使用寿命长;在电池组SOC较低时,驱动系统仍能保证正常的功率输出能力;超级电容直接吸收辅助驱动电机制动回馈能量,能量转换效率高。 [0004] After application of the composite drive system, the vehicle can start acceleration, uphill, overtaking gentle conditions battery output current, peak current, high discharge efficiency, long service life; battery SOC is low in when the drive system is still guaranteed power output capacity; auxiliary super capacitors directly absorbed braking energy back drive motor, high energy conversion efficiency. 同时动力电池可通过DC/DC转化器为超级电容进行补偿性恒功率充电。 While the power battery can be charged to a compensating constant power ultracapacitors the DC / DC converter.

[0005] 该系统既无变速箱系统又可通过双电机的耦合控制实现无级调速。 [0005] The system is neither turn stepless transmission system by the control double coupling motor. 两台驱动电机分别由独立的电机控制器控制,在一台电机系统出现故障,或者两个电源系统(如超级电容和动力电池)中的某一个出现故障的时候,车辆仍然可以用单台电机、单个电源系统行驶。 Two driving motors respectively, a failure occurs when a failure, or the two power systems (such as super capacitors and battery power) in the vehicle can still use a single motor in motor system independent motor controlled by a controller , with a single power supply. 这样,车辆可以以较低的性能继续完成路线,或者至少可以撤离危险地点——如路口、 隧道或高速路。 In this way, the vehicle can continue to complete the course at a lower performance, or at least leave the dangerous place - such as junctions, tunnel or highway.

[0006] 该复合驱动系统包括:动力电池组、超级电容组、DC/DC变换器、主驱动电机、主驱动电机控制器、辅驱动电机、辅驱动电机控制器、辅传动轴、主传动轴及双输入耦合驱动桥。 [0006] The composite drive system comprising: a power battery, super capacitor bank, DC / DC converters, the main drive motor, the main drive motor controller, the auxiliary driving motor, the auxiliary driving motor controller, the secondary drive shaft, the main shaft dual input coupling and drive axle. 其连接关系为:DC/DC变换器的输入端与动力电池组相连,输出端与超级电容组相连。 Connected relationship: input DC / DC converter is connected to the power battery, super capacitor is connected to the output terminal of the group. 超级电容组的高压经辅电机控制器逆变供电给辅驱动电机,辅驱动电机动力经辅传动轴输入给驱动桥的辅输入端。 The secondary high voltage by an inverter motor controller super capacitor bank to the auxiliary power drive motor, the auxiliary driving motor via the auxiliary shaft input power to the drive axle of the auxiliary input. 动力电池组的高压经主驱动电机控制器逆变供电给主驱动电机,主驱动电机动力经主传动轴输入给驱动桥的主输入端。 High voltage traction battery via the main drive motor inverter controller supplying the main drive motor, the main drive motor power input via the main drive shaft to the main input of the driver axle.

[0007] 工作原理如下:超级电容组负责对辅驱动电机进行供电,辅驱动电机为车辆启动、加速、上坡过程中提供辅助驱动力矩,制动回馈中提供电机制动力矩。 [0007] works as follows: Group responsible for ultracapacitors Auxiliary drive motor power, auxiliary drive motor of the vehicle start, acceleration, uphill drive torque supplied during an auxiliary brake is provided in the motor braking torque feedback. 辅助电机的制动回馈的电能完全由超级电容吸收。 Brake power assist motor feedback completely absorbed by the super capacitor. 动力电池组负责对主驱动电机和其余车辆电动辅件进行供电。 Group is responsible for the main battery and the remainder of the vehicle drive motor electric powered accessories. 当超级电容组所存储的电量低于一定的限值时,由动力电池组经DC/DC变换器进行补偿性恒功率充电。 When the super capacitor power group stored below a certain limit, by a compensatory constant power charging the power battery via the DC / DC converter. 主驱动电机功率满足车辆最高稳定车速的功率需求,主驱动电机和辅助驱动电机的输出扭矩经双输入驱动桥耦合满足车辆的坡道起步和加速性能。 The main drive motor power to meet the maximum power demand of the vehicle steady vehicle speed, the main drive motor and the output torque of the auxiliary drive motor is coupled via the two-input drive axle to meet the hill start and acceleration performance of the vehicle.

[0008] 本发明充分利用了超级电容充放功率高、效率高及动力电池高能量密度的优点, 克服了动力电池频繁峰值电流放电及制动回馈能量吸收效率低等问题。 [0008] The present invention fully utilizes the super capacitor charging and discharging high power, high efficiency and the advantages of high energy density battery, the battery power to overcome the peak discharge current and the brake frequent feedback energy absorption and low efficiency. 通过双电机的耦合实现了无变速机构的无级调速能力,主电机和辅助电机都可完成车辆低性能驱动,以保证一台电机出现故障后,车辆还可“跛行” 一段路程。 Coupled two variable speed motors is achieved by the ability of non-transmission mechanism, the main motor and the auxiliary electric motor driving the low performance of the vehicle can be done to ensure that the one motor fails, the vehicle may "limp" journey.

附图说明 BRIEF DESCRIPTION

[0009] 图1是本发明所述的双电机双能源复合驱动系统的结构示意图。 [0009] FIG. 1 is a schematic view of the structure of the present invention, dual energy composite dual motor drive system.

[0010] 其中1双输入耦合驱动桥,2辅传动轴,3辅驱动电机,4辅驱动电机控制器,5 超级电容组,6 DC/DC变换器,7动力电池组,8主驱动电机控制器,9主驱动电机,10主传动轴。 [0010] wherein one pair coupled to the input drive axle, the secondary shaft 2, auxiliary drive motor 3, 4 Auxiliary drive motor controller, group 5 ultracapacitors, 6 DC / DC converters, power battery 7, 8 of the main drive motor control , a main drive motor 9, the main drive shaft 10.

具体实施方式 detailed description

[0011 ] 参照附图,将进一步叙述发明的具体实施方案。 [0011] Referring to the drawings, it will further illustrate specific embodiments of the invention.

[0012] 本发明提出的采用双驱动电机和动力电池-超级电容双能源的复合驱动系统架构包括(7)动力电池组、(5)超级电容组、(6) DC/DC变换器、(9)主驱动电机、(8)主驱动电机控制器、⑶辅驱动电机、⑷辅驱动电机控制器、⑵辅传动轴、(10)主传动轴、(1)双输入耦合驱动桥以及在附图没有列出的控制单元,如整车控制器,超级电容管理系统,动力电池管理系统。 [0012] The present invention is proposed dual drive motor and a battery - ultracapacitor energy dual drive system architecture includes a complex (7) power battery, (5) super capacitor group, (6) DC / DC converter (9 ) a main drive motor (8) of the main drive motor controller, the auxiliary driving motor ⑶, ⑷ auxiliary drive motor controller, ⑵ secondary drive shaft (10) of the main shaft (1) and a dual-input coupled to the drive axle in the drawings the control unit is not listed, such as the vehicle controller, the management system super capacitor, battery management systems. 其连接关系为:(6)DC/DC变换器的输入端与(7)动力电池组相连,输出端与(5)超级电容组相连。 The connection is as follows: an input terminal (6) DC / DC converter is connected to (7) power battery, and is connected to an output terminal (5) super capacitor bank. 当超级电容管理系统检测到(¾超级电容组所存储的电量低于一定的值时,将需求充电信息通过CAN通讯发送给整车控制器,由整车控制器根据动力电池、 超级电容的电压和电量以及车辆的运行工况,将控制信息发送给(6)DC/DC变换器,实现对(5)超级电容组进行补偿性恒功率充电。(¾超级电容组的高压输出端与(4)辅电机控制器的直流输入端相连,(4)辅电机控制器经逆变矢量变频等方式控制(¾辅驱动电机,(3) 辅驱动电机的动力输出经(¾辅传动轴输入给(1)双输入驱动桥的辅助输入端。主驱动电机控制器(8)的直流输入端与动力电池组(7)高压输出端相连,经逆变矢量变频等方式控制主驱动电机(9),主驱动电机(9)的动力输出经传动轴输入给(1)双输入驱动桥的主输入端。整车控制器根据采集的加速踏板信号,档位信号,制动踏板信号,超级电容 When the management system detects the super capacitor (super capacitor group ¾ quantity of stored power is below a certain value, the charge information transmitted to the vehicle demand controller via CAN communication, by the controller in accordance with the vehicle battery, super capacitor voltage and power and operating conditions of the vehicle, the control information to (6) DC / DC converter, to achieve (5) super capacitor group compensating constant power charging. (¾ super high voltage output capacitor bank and the (4 ) secondary DC input terminal connected to the motor controller, (4) the secondary motor controller is an inverter frequency vector control, etc. (¾ auxiliary drive motor (3) by the power output of the secondary drive motor (¾ to the auxiliary input shaft ( 1) two-input auxiliary input drive axle of main drive motor controller (8) of the DC input terminal of the power battery (7) is connected to the high voltage output terminal via an inverter frequency vector control of the main drive motor, etc. (9), the power output of the main drive motor (9) via the input shaft to the (1) dual-input input terminal of the primary drive axle. VCU accelerator pedal signal acquisition, the gear signal, a brake pedal signal, ultracapacitors 以及动力电池,车速等信息,依照完善的控制策略,负责对两驱动电机进行扭矩输出控制和辅驱动电机的制动能量回馈控制。 And a battery, the vehicle speed and other information, in accordance with sound control strategy, the drive motor responsible for the two braking energy output torque control and the sub feedback control of the drive motor.

[0013] 本实施方案的双输入后桥的传动比6. 17X1.48 ;动力电池采用磷酸铁锂动力电池,单体标称电压/容量为3. 2V,50Ah,电池组总电压/容量为600V,500Ah ;超级电容单体标称电压/容量为2. 7V/10000F,超级电容组总电压/电容为600V/45F ;DC/DC转换器额定功率30kw ;主驱动电机采用矢量控制永磁同步电机,额定功率100kW,峰值功率180kW ;辅驱动电机采用矢量控制永磁同步电机,额定功率60kW,峰值功率120kW。 [0013] the rear axle drive-input program according to the present embodiment than 6. 17X1.48; power battery using the lithium iron phosphate batteries monomer nominal voltage / capacity 3. 2V, 50Ah, battery total voltage / capacity 600V, 500Ah; super-capacitor single nominal voltage / capacity 2. 7V / 10000F, total voltage of the super capacitor / capacitance of 600V / 45F; DC / DC converter power rating of 30kW; main drive permanent magnet synchronous motor vector control motor, 100kW rated power, the peak power of 180kW; auxiliary drive motor with permanent magnet synchronous motor vector control, the rated power of 60kW, the peak power of 120kW. [0014] 以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 [0014] The foregoing is only preferred embodiments of the present invention but are not intended to limit the scope of the present invention. 凡在本发明的精神和原则之内,所作的任何修改、等同替换以及改进等,均应包含在本发明的保护范围之内。 Within the spirit and principle of the present invention, any modifications, equivalent substitutions and improvements should be included within the scope of the present invention.

[0015] 本领域技术人员可以根据本发明公开的内容和所掌握的本领域技术对本发明的一些内容作出替换或变型,但是这些替换或变型都不应视为脱离本发明的构思,这些替换或变型均在本发明要求保护的权利要求范围内。 [0015] Those skilled in the art may be made in accordance with the present disclosure and those skilled in the disposal of some of the elements of the present invention is replacement or modification, but these substitutions or modifications shall be construed as departing from the inventive concept, these substitutions, or modifications are within the scope of the present invention as claimed in the claim.

Claims (5)

  1. 1. 一种双电机双能源复合驱动系统,其特征在于该系统由动力电池组、超级电容组、 DC/DC变换器、主驱动电机、主驱动电机控制器、辅驱动电机、辅驱动电机控制器、辅传动轴、 主传动轴及双输入耦合驱动桥组成。 A dual-motor dual-energy composite drive system, characterized in that the system is powered by a battery, a super capacitor bank, DC / DC converters, the main drive motor, the main drive motor controller, the auxiliary driving motor, the auxiliary driving motor control , a secondary shaft, an input coupled to the main drive shaft and two axle components.
  2. 2.权利要求1中所述的双电机双能源复合驱动系统,其特征在于DC/DC变换器的输入端与动力电池组相连,输出端与超级电容组相连,超级电容组的高压经辅电机控制器逆变供电给辅驱动电机,辅驱动电机动力经辅传动轴输入给驱动桥的辅输入端,动力电池组的高压经主驱动电机控制器逆变供电给主驱动电机,主驱动电机动力经主传动轴输入给驱动桥的主输入端。 Dual-motor dual-energy of the composite drive system of claim 1, wherein the input is connected to DC / DC converter and the power battery, super capacitor is connected to the output terminal of the group, a high-pressure secondary motor group supercapacitor the controller supplies power to the auxiliary input terminal of the inverter auxiliary drive motor, the auxiliary driving motor via the auxiliary shaft input power to the drive axle, the main traction battery via the high pressure of the drive motor inverter controller supplying the main drive motor, the main drive motor power via the main drive shaft is input to the input terminal of the main drive axle.
  3. 3.权利要求2中所述的双电机双能源复合驱动系统,其特征在于超级电容吸收辅助电机的制动回馈的电能。 Dual-motor dual-energy of the composite drive system according to claim 2, characterized in that the braking energy absorbed supercapacitor feedback auxiliary motor.
  4. 4.权利要求2中所述的双电机双能源复合驱动系统,其特征在于当超级电容组所存储的电量低于一定的限值时,由动力电池组经DC/DC变换器进行补偿性恒功率充电。 Dual-motor dual-energy of the composite drive system according to claim 2, characterized in that when the super-capacitor set of stored power is below a certain limit value, constant over compensatory DC / DC converter by the power of the battery pack power charging.
  5. 5.权利要求2中所述的双电机双能源复合驱动系统,其特征在于动力电池采用磷酸铁锂动力电池,单体标称电压/容量为3. 2V,50Ah,电池组总电压/容量为600V,500Ah,超级电容单体标称电压/容量为2. 7V/10000F,超级电容组总电压/电容为600V/45F,DC/DC 转换器额定功率30kw,主驱动电机采用矢量控制永磁同步电机,额定功率100kW,峰值功率180kff ;辅驱动电机采用矢量控制永磁同步电机,额定功率60kw,峰值功率120kw。 Dual-motor dual-energy of the composite drive system according to claim 2, characterized in that the battery cells using the lithium iron phosphate monomer nominal voltage / capacity 3. 2V, 50Ah, battery total voltage / capacity 600V, 500Ah, single super capacitor nominal voltage / capacity 2. 7V / 10000F, total voltage of the super capacitor / capacitance of 600V / 45F, DC / DC converter power rating 30kw, main drive permanent magnet synchronous motor vector control motor, 100kW rated power, peak power 180kff; auxiliary drive motor with permanent magnet synchronous motor vector control, the rated power of 60kW, the peak power of 120kw.
CN 201110153846 2011-06-09 2011-06-09 A dual motor dual energy composite drive system CN102294963A (en)

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