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Control method and system of vehicle, and vehicle

A control method and technology of a control system, applied in the direction of control drive, vehicle components, electric vehicles, etc., can solve problems such as less consideration of differentiation, and achieve the effect of ensuring stability

Active Publication Date: 2018-07-03
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing electric four-wheel drive technology, taking pure electric vehicles driven by two-axis motors as an example, mostly distributes torque through the ratio of front and rear axle driving forces, and seldom considers the differentiation under special working conditions

Method used

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  • Control method and system of vehicle, and vehicle
  • Control method and system of vehicle, and vehicle
  • Control method and system of vehicle, and vehicle

Examples

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0032] The vehicle control method, system and vehicle according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] Before describing the control method of the vehicle according to the embodiment of the present invention, the vehicle includes a power battery, a front axle drive motor and a rear axle drive motor. Taking an electric vehicle as an example, the method involves mainly the front / rear axle drive motor, Front / rear axle motor controller, front / rear axle reducer...

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Abstract

The invention discloses a control method and system of a vehicle, and the vehicle. The vehicle comprises a power battery, a front-axle driving motor and a rear-axle driving motor. The control method comprises the steps that according to the driving need, the total demand torque of the vehicle is determined; longitudinal acceleration information and steering information of the vehicle are obtained;according to the longitudinal acceleration information and the steering information of the vehicle, the front-axle load and the rear-axle load of the vehicle are obtained; and according to the front-axle load, the rear-axle load and the total demand torque of the vehicle, the torque is distributed for the front-axle driving motor and the rear-axle driving motor. The longitudinal acceleration information and the steering information of the vehicle are comprehensively considered, the obtained total demand torque is distributed to the front-axle driving motor and the rear-axle driving motor of the vehicle reasonably, and the stability, safety and power performance of the vehicle are guaranteed.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle control method, system and vehicle. Background technique [0002] With the rapid development of new energy vehicles today, electric four-wheel drive technology has become a research hotspot for many car companies and OEMs. Among them, the flexibility of the power system of the electric four-wheel drive system determines its diversity and dependence on the performance of the controller software. In traditional cars, the power of the front and rear axles is coordinated and distributed through the transfer case, differential, drive shaft and other parts to ensure the independent drive of the four wheels. The electric four-wheel drive mainly controls the torque distribution between the front and rear axles through the vehicle controller, without transmission components, and has the advantages of simple structure, high space utilization rate and high power transmission ...

Claims

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Application Information

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IPC IPC(8): B60L15/28B60L15/38B60W30/18B60W40/10B60W40/107
CPCB60L15/28B60L15/38B60W30/18B60W40/10B60W40/107B60W2710/083Y02T10/72
Inventor 杨璐王彬
Owner BEIQI FOTON MOTOR CO LTD
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