Distributed drive electric vehicle four-wheel drive torque distribution method and system

A driving force, electric vehicle technology, applied in the field of four-wheel drive torque distribution method and system for distributed drive electric vehicles, can solve the problems of unreasonable distribution of torque, low torque distribution efficiency, and reduced high-speed obstacle avoidance ability, and achieves high speed improvement. Obstacle avoidance ability, ensure lateral stability, and improve the effect of distribution efficiency

Active Publication Date: 2021-01-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The torque cannot be distributed reasonably according to the actual situation of the vehicle, resulting in the reduction of the vehicle's high-speed obstacle avoidance ability, poor stability, and low torque distribution efficiency

Method used

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  • Distributed drive electric vehicle four-wheel drive torque distribution method and system
  • Distributed drive electric vehicle four-wheel drive torque distribution method and system
  • Distributed drive electric vehicle four-wheel drive torque distribution method and system

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The terms "first" and "second" in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus comprising a series of steps or units is not defined by listed steps or u...

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Abstract

The invention discloses a distributed electric vehicle four-wheel driving torque distribution method and system, and the method comprises the steps: calculating an expected yawing torque according tothe deviation between the expected yawing angular speed and the actual yawing angular speed of a vehicle; acquiring deviation information of an actual driving track of the vehicle and slip informationof each tire; determining a target moment distribution mode based on the expected yawing moment, the deviation information of the actual driving track and the slip information of each tire; based onthe target torque distribution mode, distributing the driving torque of each wheel of the vehicle to obtain the distributed driving torque of each wheel. By means of the four-wheel driving torque multi-mode distribution method, the high-speed obstacle avoidance capacity of the vehicle on the low-adhesion road surface is improved, the transverse stability in the driving process is guaranteed, and the distribution efficiency of the four-wheel driving torque is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a four-wheel drive torque distribution method and system for a distributed drive electric vehicle. Background technique [0002] At present, the driving torque distribution method of electric vehicles is usually carried out in a relatively simple way. For example, the torque distributed to each wheel is divided equally among the four wheels, or the front and rear wheels are distributed according to a certain ratio, and the left and right wheels are equal. The torque cannot be distributed reasonably according to the actual situation of the vehicle, resulting in the reduction of the vehicle's high-speed obstacle avoidance ability, poor stability, and low torque distribution efficiency. Contents of the invention [0003] In view of the above problems, the present invention provides a four-wheel drive torque distribution method and system for a distributed drive electric vehicl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/10Y02T10/72
Inventor 刘辉刘聪刘洋徐丽丽贝文瑾王珍
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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