Sliding energy recycling method and device of pure electric vehicle and pure electric vehicle

Abstract

The invention provides a sliding energy recycling method and device of a pure electric vehicle and the pure electric vehicle. The method comprises the steps of judging whether the pure electric vehicle enters a sliding energy recycling mode or not; when the pure electric vehicle enters the sliding energy recycling mode, obtaining driving condition information of the pure electric vehicle; according to the driving condition information, determining target torque needed by the sliding energy recycling mode; according to the target torque, controlling a motor of the pure electric vehicle to enter the power generation status, and performing sliding energy recycling. According to the scheme, different torque recycling requirements of drivers under different driving conditions are considered, and the driving feeling of the drivers is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a sliding energy recovery method and device for pure electric vehicles and the pure electric vehicle. Background technique [0002] In the face of increasingly severe energy and environmental problems, energy-saving and new energy vehicles are becoming the focus of current research in various countries. In my country, energy-saving and new energy vehicles have been highly valued by the government and industry, and have been designated as one of the strategic emerging industries. The development of energy-saving and new energy vehicles, especially pure electric vehicles with zero pollution and zero emissions, is not only of great significance to my country's energy security and environmental protection, but also an important direction for my country's automotive industry to achieve transformation and upgrading and technological breakthroughs. future development trend. ...

AI Technical Summary

Problems solved by technology

For braking energy recovery, since the driver's subjective desire is to decelerate the pure electric vehicle through braking, the extra deceleration generally does not affect the driver's driving experience, even if the driver thinks that the deceleration of the pure electric vehicle is too high. It can also be adjusted and adapted by adjusting the opening of the brake pedal; but for sliding energy recovery, the additional deceleration may affect the driver's driving experience under certain working conditions

For example, when a pure electric vehicle is driving on a sandy field or when a pure electric vehicle is operating on an uphill slope, the pure electric vehicle itself will produce a greater deceleration than driving on a flat or paved road. In the energy recovery mode, the deceleration generated by the motor will accelerate the speed and reduce the speed, making the driver feel "heavy" in the pure electric vehicle, which will affect the driving experience

[0006] Up to now, pure electric vehicle manufacturers at home and abroad have used a single driving condition as the background when calculating the required torque in the sliding energy recovery mode of pure electric vehicles, that is, the required torque of the motor is fixed when entering the sliding energy recovery mode at the same vehicle speed. , does not consider the impact of energy recovery demand torque on the driver's driving experience under different driving conditions

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