Pure electric bus drive control method

A pure electric bus and vehicle controller technology, applied in the direction of control devices, vehicle components, driver input parameters, etc., can solve problems such as large overlapping range, loss of division meaning, and difficulty in identifying parameters for automatic mode switching

Inactive Publication Date: 2014-03-26
长春北车电动汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the start control of idling crawling without considering the change of gear position in the prior art and the large overlap range of torque control under different drive modes with torque compensation, which loses the meaning of di

Method used

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  • Pure electric bus drive control method
  • Pure electric bus drive control method
  • Pure electric bus drive control method

Examples

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Example Embodiment

[0057] refer to figure 1 , the overall process of the pure electric bus drive control method is as follows, after the vehicle controller passes the self-check, according to the accelerator pedal opening and its rate of change, the SOC state of the battery, and combined with the minimum working time limit module to determine the working mode of the vehicle It is one of the safe start mode, economical mode, and power mode; if the working mode of the vehicle is identified as the safe start mode, the expected torque of the motor in the safe start mode is calculated ; If the working mode of the vehicle is identified as the economical mode, calculate the expected torque of the motor in the economical mode ;Otherwise calculate the expected torque of the motor in power mode ;Finally, the energy limitation strategy constrains and limits the expected torque of the motor. If the vehicle has no serious failure at this time, it outputs the final target torque command to the drive motor...

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Abstract

A pure electric bus drive control method comprises the following steps that after a vehicle controller passes self inspection, a working pattern of the a vehicle is judged to be one of a safety starting pattern, an economic pattern and a power pattern according to the opening degree of an accelerator pedal, the change rate of the opening degree of the accelerator pedal and the SOC state of a battery and by combining a minimum working time limiting module; if the working pattern of the vehicle is recognized as the safety starting pattern, expected motor torque under the safety starting pattern is calculated; if the working pattern of the vehicle is recognized as the economic pattern, the expected motor torque under the economic pattern is calculated; otherwise the expected motor torque under the power pattern is calculated; finally, the expected motor torque is restrained and limited through energy limiting strategies, final target torque instructions are output to a drive motor if the vehicle has no serious faults at the moment, the vehicle is switched to high pressure if a fault level is high, and otherwise the final demand torque of the drive motor is output as zero.

Description

technical field [0001] The present invention relates to a control method of a passenger car, more precisely, the patent of the present invention relates to a driving control method of a pure electric passenger car. Background technique [0002] A pure electric vehicle is a nonlinear dynamic system integrating electronics, electricity, chemistry, and machinery. Its power system is mainly composed of a power battery pack, a power battery management system, a drive motor, a motor controller, and a transmission. Vehicle control technology, power battery and power battery management technology, motor and motor control technology are considered to be the three key technologies of pure electric vehicles. The vehicle controller is the vehicle powertrain controller, which is the core component of the pure electric vehicle vehicle control system. As the software part of the vehicle controller, the vehicle drive control strategy is mainly responsible for the output control of the vehi...

Claims

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Application Information

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IPC IPC(8): B60W30/182B60W10/08B60W10/26B60W40/10B60W50/038
CPCB60W10/08B60W10/26B60W30/18063B60W30/188B60W2510/244B60W2540/10B60W2540/106B60W2540/215B60W2710/083B60W2710/242
Inventor 刘宏伟王丽娟刘洋初亮田军辉
Owner 长春北车电动汽车有限公司
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