Torque control method, device and electric vehicle based on navigation information
A technology of torque control and navigation information, which is applied in the direction of control devices, control drives, electric vehicles, etc., can solve the problems of large vehicle deceleration, strong deceleration feeling, and deviation of driving experience, so as to improve energy recovery and utilization rate and increase continuous driving The effect of miles
Active Publication Date: 2022-04-26
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]To make the object, technical solution and advantages of embodiments of the present invention more clear, the following will be combined with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described, obviously, the embodiments described are part of the embodiments of the present invention, not all embodiments. Typically described and illustrated herein in the drawings and the components of the embodiments of the present invention may be arranged and designed in various different configurations.
[0023] Accordingly, the following detailed description of an embodiment of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to represent a selected embodiment of the present invention. Based on embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the ...
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The present invention provides a navigation information-based torque control method, device, and electric vehicle, which relate to the technical field of power system control. The method includes: firstly, based on the navigation path information, determining that the current curve is the first curvature curve; The stored stable speedometer determines the stable vehicle speed corresponding to the first curvature curve; when the current driving information of the vehicle satisfies the enable preset condition, according to the current driving information, navigation route information and stable vehicle speed, determine when the vehicle arrives at the curve The theoretical deceleration torque; finally control the motor to achieve the theoretical deceleration torque. According to the navigation road condition information, the method adjusts the motor torque when the vehicle is about to enter a curve coasting, which can alleviate the problem of low energy recovery rate during the coasting process of the electric vehicle in the prior art, improve the energy recovery utilization rate, and increase the driving speed. mileage effect.
Description
Technical field [0001] The present invention relates to the field of power system control technology, in particular to a torque control method based on navigation information, a device and an electric vehicle. Background [0002] At present, in the general pure electric vehicle, when the characteristic of its braking system is that the mechanical brake and the electric brake are not decoupled, once the driver steps on the brake pedal, the brake disc of the vehicle begins to produce friction, so that part of the kinetic energy of the vehicle is converted into thermal energy. Usually in order to ensure the recovery of energy of the vehicle, the role of the drive motor can be started to play when the vehicle is taxiing, so as to achieve vehicle deceleration and avoid the frictional energy loss of the brake caliper when the braking system intervenes. [0003] When the vehicle is in the taxiing process, if the motor recovery strength is large (that is, the motor has a strong drag for...
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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