CN102303524B - Control method for electric vehicle power system with clutch device - Google Patents

Control method for electric vehicle power system with clutch device Download PDF

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Publication number
CN102303524B
CN102303524B CN 201110250002 CN201110250002A CN102303524B CN 102303524 B CN102303524 B CN 102303524B CN 201110250002 CN201110250002 CN 201110250002 CN 201110250002 A CN201110250002 A CN 201110250002A CN 102303524 B CN102303524 B CN 102303524B
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motor
output torque
electric vehicle
power system
control
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CN 201110250002
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CN102303524A (en )
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林巨广
顾杰
王淑旺
孙纯哲
赵志军
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安徽巨一自动化装备有限公司
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Abstract

本发明公开了一种带离合装置的电动汽车动力系统的控制方法,其电动汽车动力系统的结构形式是电机的转动输出依次经过飞轮、离合装置和变速箱传输到车轮,其特征是电动汽车动力系统的控制方法是在电机控制器启动后按不同的模式进行控制。 The present invention discloses a control method for an electric vehicle power system with a clutch apparatus, which structure is the electric vehicle power system sequentially passes through the rotation output of the motor flywheel, clutch and transmission means to transmit the wheel, wherein the electric vehicle power the method of controlling the system is controlled in different modes in the motor controller starts. 本发明方法能够降低车辆起步时电机控制器及电机中流过的电流以保护电机控制器和电机,延长电机控制器和电机的使用寿命,提升电动汽车起步阶段的加速性能,保证驾驶员的驾驶习惯。 The method of the present invention can reduce the starting current when the motor controller and motor vehicle flows to protect the motor controller and motor, motor controller and extend the life of the motor, the electric vehicle to enhance the acceleration performance of the initial stage, to ensure the driving habits of the driver .

Description

带离合装置的电动汽车动力系统的控制方法 The control method of the electric vehicle power system with clutch device

技术领域 FIELD

[0001] 本发明涉及电动汽车的动力系统控制方法。 [0001] The present invention relates to an electric power system control method for vehicles.

背景技术 Background technique

[0002] 面对当前资源的匮乏和环境的恶化,人们对汽车的安全、节能、环保的要求越来越高。 [0002] the face of the deterioration of the current scarcity of resources and the environment, people's safety vehicles, energy-saving and environmental protection have become increasingly demanding. 以零排放,无污染为特点的电动汽车已被业界公认为汽车行业的最终方向。 Zero emissions, no pollution to the characteristics of the electric car industry has been recognized as the ultimate direction of the automotive industry. 电动汽车虽然动力系统简单,但是其并没有做到像传统汽车一样可靠,安全,这也是目前研究的热点。 Although the electric vehicle power system is simple, but it does not do as conventional cars as reliable, secure, which is currently a hot research.

[0003]目前的电动汽车的动力系统种类很多,其主要区别即是否可换档和对动力系统的不同控制方法。 [0003] Power system type electric vehicle is currently a lot, the main difference that is different whether the shift control method of the power system. 目前电动汽车起步时一般都是让电机从零速启动直接驱动汽车起步,这样会使电机控制器和电机中流过的电流过大,对电机控制器和电机损伤大,从而影响其使用寿命。 When the current electric cars are generally started to let the motor start from zero speed direct-drive car started, it would be the motor controller and motor flowing current is too large, large motor controller and motor damage, thus affecting their life. 不可换档的电动汽车无法让电机在高速时工作在高效区从而使整车效率低下,动力性能差。 Can not shift the electric motor car can not get to work at high speed in the high zone so that the vehicle is low efficiency, poor power performance.

发明内容 SUMMARY

[0004] 本发明是为避免上述现有技术所存在的不足之处,提供一种带离合装置的电动汽车动力系统的控制方法,以使电机工作在高效区、改善电动汽车电机的启动性能、减小电机带载时流过电机控制器和电机中的电流从而减小对电机控制器和电机的损伤,延长电机控制器和电机的使用寿命,并且维持驾驶员的驾驶习惯。 [0004] The present invention is to avoid the shortcomings of the prior art described above is present, there is provided a control method of an electric vehicle power system with clutch device, in order to operate the motor in the high zone, an electric vehicle to improve the starting performance of the motor, motor controller and the motor current flowing through the motor is reduced when the carrier tape so as to reduce damage to the motor controller and the motor, motor controller and extend the life of the motor, and maintaining the driving habits of the driver.

[0005] 本发明解决技术问题采用如下方案: [0005] Solving the Problem The present invention adopts the following scheme:

[0006] 本发明带离合装置的电动汽车动力系统的控制方法,所述电动汽车动力系统的结构形式是:电机的转动输出依次经过飞轮、离合装置和变速箱传输到车轮,其特征是所述电动汽车动力系统的控制方法是在电机控制器启动后按如下模式进行控制: [0006] The control method of the electric vehicle power system with clutch device according to the present invention, the structure of the electric vehicle power system is: rotation of the motor sequentially output through the flywheel, clutch and transmission means is transmitted to the wheels, characterized in that said the control method of the electric vehicle power system is controlled by a mode after the motor controller starts:

[0007] 若变速箱为空档,则控制电机的输出扭矩为T,其中T不为零;同时开始计时,当计时达到设定的时间t时,若变速箱仍为空档,则控制电机输出扭矩为零; [0007] If the transmission is neutral, the control output torque of the motor is T, where T is not zero; the same start time, when the time reaches the set time t, and if the transmission remains in neutral, the motor control the output torque is zero;

[0008] 若变速箱不在空档,且离合装置没有完全接合,则控制电机输出扭矩为T ; [0008] If the transmission is not in neutral and the clutch means is not fully engaged, then control the motor output torque T;

[0009] 若变速箱不在空档,且离合装置完全接合,并有车速小于或等于临界速度Vc,则控制电机输出扭矩为零; [0009] If the transmission is not in neutral and the clutch means is completely engaged, and the vehicle speed Vc of less than or equal to the critical speed, the motor output torque is zero, the control;

[0010] 若变速箱不在空档;且离合装置完全接合,并有车速大于临界速度Vc,存在以下三种模式: [0010] If the transmission is not in neutral; fully engaged and the clutch means, and vehicle speed Vc of more than the critical speed, there are the following three modes:

[0011] 制动踏板已被踩下,则控制电机输出扭矩为零; [0011] The brake pedal has been depressed, the control output torque of the motor is zero;

[0012] 制动踏板和加速踏板均未被踩下,则控制电机输出扭矩为T ; [0012] none of the accelerator pedal and the brake pedal is depressed, the control output torque of the motor is T;

[0013] 加速踏板已被踩下,则根据加速踏板被踩下的深度控制电机输出在相应的扭矩。 [0013] accelerator pedal has been depressed, the accelerator pedal is depressed depth control the motor output torque corresponding.

[0014] 本发明带离合装置的电动汽车动力系统的控制方法的特点也在于: [0014] The method of controlling the characteristics of the electric vehicle power system with clutch means of the present invention is also characterized by:

[0015] 设定所述电机输出扭矩T是在变速箱为一档时、车辆满载行驶的一档速度Vi为2km/h < Vi < 50km/h。 When [0015] setting the motor output torque T is in the transmission of a file, a file of the full-load vehicle speed Vi is 2km / h <Vi <50km / h.

[0016] 所述临界速度V。 The [0016] critical speed V. 与一档速度Vi满足:0 < V。 And a gear speed Vi satisfying: 0 <V. < Vi。 <Vi. [0017] 与已有技术相比,本发明具有以下显著效果: [0017] Compared with the prior art, the present invention has the following remarkable effects:

[0018] I、本发明控制电机在没有加载车辆负载时启动,使得电机启动时流过电机控制器和电机的电流比加载上车辆负载启动时小很多,保护了电机控制器和电机,延长了电机控制器和电机的使用寿命。 [0018] I, the present invention controls the motor to start the vehicle load when not loaded, so that the current flow through the motor when the motor controller and motor starting much smaller than the load on the vehicle when the load starts, the motor controller and motor protection, prolonged life of the motor controller and the motor.

[0019] 2、本发明使驾驶员在不踩下加速踏板时在合适的档位下使车辆能够以一定的速度行驶,维持了驾驶员对传统车的驾驶习惯。 [0019] 2, the present invention is that the driver of the vehicle when the accelerator pedal is not depressed at a suitable gear capable of traveling at a constant speed, the driver maintains the traditional vehicle driving habits.

[0020] 3、在将本发明方法所控制的动力系统中的电机设置为异步电机时,按照本发明方法控制电机转动后再带动车辆起步,能够提供足够大的车辆起步扭矩,车辆起步加速性能会更加优异。 [0020] 3, a motor disposed in a power system control method of the present invention when in the induction motor, the motor control method according to the present invention, the rotation drive of the vehicle after starting, to provide sufficient torque to start the vehicle, the vehicle acceleration from It will be more outstanding.

[0021] 4、在将本发明方法所控制的动力系统中的飞轮的质量增加,即增加了电机转动后的转动惯量,可以进一步减小车辆起步时流过电机控制器和电机的电流,从而进一步保护电机控制器和电机。 [0021] 4, the mass flywheel power system control method of the invention is increased, i.e., increasing the moment of inertia of the rotation of the motor, the motor controller can be further reduced and the current flowing through the motor when the vehicle is started, so that further protect the motor controller and motor.

附图说明 BRIEF DESCRIPTION

[0022] 图I为本发明的动力系统结构示意图; [0022] I powertrain configuration diagram schematic of the present invention;

[0023] 图2为本发明对动力系统的控制方法的流程图; [0023] FIG. 2 is a flow chart of a control method of the power system of the present invention;

[0024] 图中标号:1电机;2电机飞轮;3离合装置;4变速箱;5车轮。 [0024] FIG numeral: a motor; a flywheel motor 2; 3 clutch means; transmission 4; 5 wheels.

具体实施方式 detailed description

[0025] 参见图1,图2,本实施例中,带离合装置的电动汽车动力系统的结构设置包括装有飞轮2的电机I、离合装置3和变速箱4,电机I的转动输出依次经过飞轮2、离合装置3和变速箱4传输到车轮5。 [0025] Referring to FIG 1, FIG 2, in this embodiment, the structure of the electric vehicle power system provided with a clutch means comprises a motor with a flywheel I 2, 4, rotation of the output means 3 and the gearbox clutch sequentially through the motor I flywheel 2, a clutch 3 and the transmission means 4 is transmitted to the wheels 5.

[0026] 本实施例中电动汽车动力系统的控制方法是在电机控制器启动后按如下模式进行: [0026] The control method of the present embodiment, electric vehicle power system embodiment is performed as follows mode after the motor controller starts:

[0027] 若变速箱4为空档,此时车辆的负载没有施加到电机上,则控制电机的输出扭矩为T,其中T不为零;此时电机开始转动到一定速度,同时开始计时,当计时达到设定的时间t时,若变速箱4仍为空档,表明此时驾驶员意图仍在等待,为了避免不必要的电力消耗,则控制电机输出扭矩为零。 [0027] When the transmission 4 is in neutral, the vehicle is not at this time the load applied to the motor, the control output torque of the motor is T, where T is not zero; at this time the motor starts to rotate to a certain speed, while the start time, when the timer reaches the set time t, and 4 if the transmission remains in neutral, indicating that it is still waiting for the driver's intention, in order to avoid unnecessary power consumption, the motor output torque is controlled to zero.

[0028] 若变速箱4不在空档,且离合装置3没有完全接合,表明驾驶员已经将变速箱4挂上档位,并且踩下了离合装置3,车辆准备起步或正在行驶状态,则控制电机输出扭矩为T ; [0028] When the transmission 4 is not in neutral and the clutch device 3 is not fully engaged, the transmission 4 indicates that the driver has put the gear, and depresses the clutch device 3, the vehicle is ready to start or driving state, the control motor output torque T;

[0029] 若变速箱4不在空档,且离合装置3完全接合,并有车速小于或等于临界速度Vc,则控制电机输出扭矩为零。 [0029] When the transmission 4 is not in neutral and the clutch device 3 is completely engaged, and the vehicle speed Vc of less than or equal to the critical speed, the motor output torque is controlled to zero. 临界速度Vc是个较小的数值,如果离合装置3完全接合并且车速小于此值,则认定车辆处于如下两种状态之一,一种是静止状态,另一种是电机堵转状态。 Critical speed Vc is smaller values ​​if the clutch device 3 is fully engaged and the vehicle speed is less than this value, the vehicle is determined in one of two states, one state is stationary, the other one is motor stall condition. 如果车辆在静止状态下驾驶员在变速箱有档位时启动了电机控制器,此时电机如果输出扭矩,则车辆会向前冲,发生危险;如果电机在堵转状态继续输出扭矩,则极其损伤电机控制器和电机。 If the driver of the vehicle in a stationary state starts when the gear transmission has a motor controller, if the output torque of the motor at this time, the vehicle will be forward, danger; if the motor output torque stall state continues, the very damage the motor controller and motor. 所以在这种工况下控制电机输出扭矩为零; So in this condition the control motor output torque is zero;

[0030] 若变速箱4不在空档,且若离合装置3完全接合,并有车速大于临界速度Vc,此时表明车辆处在以一定速度行驶的状态下,存在以下三种模式: [0030] When the transmission 4 is not in neutral, and if the clutch device 3 is completely engaged, and the vehicle speed Vc of more than the critical speed, at this time indicates that the vehicle is under constant speed driving state, the following three modes:

[0031] 制动踏板已被驾驶员踩下,表明驾驶员想减速,为了避免电力损耗,则控制电机输出扭矩为零; [0031] The brake pedal has been depressed by the driver, it indicates that the driver wants to slow down in order to avoid power loss, then control the motor output torque is zero;

[0032] 制动踏板和加速踏板均未被驾驶员踩下,表明驾驶员想让车辆工作在怠速状态,则控制电机输出扭矩为T ; [0032] None of the brake pedal and the accelerator pedal depressed by the driver, indicating that the vehicle driver wants to work in an idling state, the control of the motor output torque T;

[0033] 加速踏板已被踩下,表明驾驶员想加速,则根据加速踏板踩下的深度控制电机输出相应的扭矩。 [0033] accelerator pedal has been depressed, indicating that the driver wants to accelerate, then the corresponding output torque according to the accelerator pedal depression depth control motors.

[0034] 具体实施中,设定电机输出扭矩T是在变速箱为一档时、车辆满载行驶的一档速度Vi为2km/h < Vi < 50km/h。 [0034] In particular embodiments, the motor output torque T is set at the transmission is a gear, a full-load vehicle gear speed Vi is 2km / h <Vi <50km / h. 这样控制可以使车辆在合适的档位能够让驾驶员不踩加速踏板时以一定的速度行驶,保持了驾驶员驾驶传统车辆时的驾驶习惯,临界速度V。 Such control may be appropriate gear in the vehicle so that the driver can not step on a certain speed with the accelerator pedal, keeping the driving habits of the driver when driving a conventional vehicle, the critical speed V. 与一档速度Vi满足:0<火<¥^ [0035] 具体实施中,对于电机输出扭矩的控制均是在电机控制器启动后,是通过电机控制器来实现。 And a gear speed Vi is satisfied: 0 <Fire <¥ ^ [0035] In particular embodiments, the control for the motor output torque are started after the motor controller, it is implemented by the motor controller.

Claims (1)

  1. 1.带离合装置的电动汽车动力系统的控制方法,所述电动汽车动力系统的结构形式是:电机(I)的转动输出依次经过飞轮(2)、离合装置(3)和变速箱(4)传输到车轮(5),其特征是所述电动汽车动力系统的控制方法是在电机控制器启动后按如下模式进行控制: 若变速箱⑷为空档,则控制电机的输出扭矩为T,其中T不为零;同时开始计时,当计时达到设定的时间t时,若变速箱(4)仍为空档,则控制电机输出扭矩为零; 若变速箱(4)不在空档,且离合装置(3)没有完全接合,则控制电机输出扭矩为T ; 若变速箱(4)不在空档,且离合装置(3)完全接合,并有车速小于或等于临界速度Vc,则控制电机输出扭矩为零; 若变速箱(4)不在空档;且离合装置(3)完全接合,并有车速大于临界速度Vc,存在以下三种模式: 制动踏板已被踩下,则控制电机输出扭矩为零; Structure 1. Control method for an electric vehicle power system with clutch device, the electric vehicle power system are: motor rotational output (I) sequentially through the flywheel (2), clutch means (3) and the gearbox (4) transmitted to the wheels (5), characterized in that the control method of the electric vehicle power system is controlled by a mode after the motor controller starts: transmissions ⑷ is neutral, the control output torque of the motor is T, wherein T is not zero; the same start time, when the time reaches the set time t, when the gearbox (4) is still neutral, the control output torque of the motor is zero; if the gearbox (4) not in neutral and the clutch means (3) is not fully engaged, then control the motor output torque T; when the fully engaged gearbox (4) not in neutral and the clutch device (3), and the vehicle speed is less than or equal to the critical velocity Vc of the control output torque of the motor is zero; if the gearbox (4) is not in neutral; and clutch means (3) fully engaged, and the vehicle speed Vc of more than the critical speed, there are the following three modes: the brake pedal has been depressed, the control output torque of the motor zero; 制动踏板和加速踏板均未被踩下,则控制电机输出扭矩为T ; 加速踏板已被踩下,则根据加速踏板被踩下的深度控制电机输出在相应的扭矩; 设定所述电机输出扭矩T是在变速箱为一档时、车辆满载行驶的一档速度Vi为2km/h<Vi<50km/h ;所述临界速度V。 Neither the brake pedal and the accelerator pedal is depressed, the control output torque of the motor is T; the accelerator pedal has been depressed, the accelerator pedal is depressed at a respective depth control motor output torque; setting the motor output T is the torque at the transmission is a gear, a full-load vehicle gear speed Vi is 2km / h <Vi <50km / h; the critical speed V. 与一档速度Vi满足=CKVcXVi。 And a gear speed satisfies Vi = CKVcXVi.
CN 201110250002 2011-08-26 2011-08-26 Control method for electric vehicle power system with clutch device CN102303524B (en)

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CN101209683A (en) 2006-12-26 2008-07-02 比亚迪股份有限公司 Electric automobile driving electric motor control method and control system thereof
CN102069729A (en) 2009-11-19 2011-05-25 富士重工业株式会社 Control apparatus for electric automobile
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