Torque control method and device based on navigation information and electric vehicle
A technology for torque control and navigation information, applied in the field of power system control, can solve problems such as driving experience deviation, low energy recovery rate, and large vehicle deceleration.
Active Publication Date: 2021-02-05
睿驰电装(大连)电动系统有限公司
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Problems solved by technology
[0003] When the vehicle is coasting, if the motor has a high recovery intensity (that is, the motor has a strong drag force on the vehicle), although the energy recovery rate is high, the vehicle deceleration is large and the deceleration feeling is strong, resulting in deviations in driving experience
Therefore, the driving experience is generally improved by reducing the recovery intensity of the motor, but the driver may control the vehicle to decelerate by stepping on the brake pedal. At this time, kinetic energy is converted into heat energy, resulting in a low energy recovery rate.
That is to say, in the prior art, there is the problem of low energy recovery rate during the sliding process of the electric vehicle
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[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0023] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...
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The invention provides a torque control method and device based on navigation information and an electric vehicle, and relates to the technical field of power system control, and the method comprisesthe steps: firstly determining a current curve as a first curvature curve based on navigation path information; determining a stable vehicle speed corresponding to the first curvature curve accordingto a pre-stored stable vehicle speed table; when the current driving information of the vehicle meets an enabling preset condition, determining a theoretical deceleration torque when the vehicle reaches the curve according to the current driving information, the navigation path information and the stable vehicle speed; and finally controlling the motor to realize theoretical deceleration torque. According to the method, the motor torque is adjusted when the vehicle is about to enter the curve to slide according to the navigation road condition information, so that the problem of low energy recovery rate in the sliding process of the electric vehicle in the prior art can be relieved, and the effects of improving the energy recovery rate and increasing the driving range are achieved.
Description
technical field [0001] The invention relates to the technical field of power system control, in particular to a torque control method and device based on navigation information, and an electric vehicle. Background technique [0002] At present, in general pure electric vehicles, when the braking system is characterized by the non-decoupling of mechanical brake and electric brake, once the driver steps on the brake pedal, the brake disc of this type of vehicle will start to generate friction, causing the vehicle to Part of the kinetic energy is converted into heat energy. Usually, in order to ensure the energy recovery of the vehicle, the driving motor can start to play the role of the driving motor when the vehicle is coasting, so as to realize the deceleration of the vehicle and avoid the loss of frictional energy of the brake caliper when the braking system intervenes. [0003] When the vehicle is coasting, if the motor has a high recovery intensity (that is, the motor ha...
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IPC IPC(8): B60L15/20
CPCB60L15/2036B60L2240/423Y02T10/72Y02T90/16
Inventor姜明亮郑玥
Owner睿驰电装(大连)电动系统有限公司