Torque redistribution adjusting method and corresponding control unit and electric vehicle

Abstract

The invention discloses a method for redistribution adjustment of torque of an electric vehicle (1), the electric vehicle (1) comprising at least a first electric drive (17) for a front axle (11) and a second electric drive (18) for a rear axle (14), the method comprising at least the following steps: determining whether the electric vehicle (1) is in a torque-redistribution-requiring driving state; and if it is determined that the electric vehicle (1) is in the torque redistribution requiring driving state, adjusting the torque initially distributed to the front axle (11) and / or the rear axle (14) or the torque initially distributed to the corresponding wheels by controlling the first electric drive (17) and / or the second electric drive (18). The invention further relates to a corresponding control unit (19) for an electric vehicle (1), to a corresponding computer-readable program carrier, and to a corresponding electric vehicle (1). And better torque distribution can be carried out aiming at a specific driving state.

Description

technical field [0001] The invention relates to a method for torque redistribution adjustment of an electric vehicle, a corresponding control unit for an electric vehicle, a corresponding computer-readable program carrier and a corresponding electric vehicle. Background technique [0002] An electric vehicle refers to a vehicle that is at least partially powered by an on-board power supply and can at least partially rely on a motor to drive the wheels. At present, electric vehicles can be mainly divided into three categories: pure electric vehicles, hybrid vehicles, and fuel cell vehicles. [0003] Electric vehicles are usually equipped with corresponding drive motors on the front and rear axles to drive the wheels on the front and rear axles to rotate. During normal driving, the vehicle control unit calculates the total torque required by the vehicle based on some parameters and the degree of accelerator pedal depression, and then distributes the total torque to the drive ...

AI Technical Summary

Problems solved by technology

[0004] However, electric vehicles, especially electric trucks, often face some unconventional driving conditions that may put the electric vehicle in a situation where it needs to escape

For example, if the total torque of the truck is still distributed to the drive motors of the front and rear axles at a ratio of 1:1 when the truck climbs, in extreme cases, although the calculated total torque meets the requirements, the truck cannot complete the climb, or the climbing is very difficult

There are other similar situations, for example, front or rear wheels getting stuck in mud puddles, etc., can also cause this problem

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