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Torque distribution method and device for four-wheel drive system of electric automobile

An electric vehicle and torque distribution technology, which is applied in the field of vehicles, can solve the problems of unreasonable distribution of torque, poor economy, and inability to adjust torque, so as to achieve the effect of improving fuel economy, driving comfort, and improving power performance

Active Publication Date: 2016-04-06
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Vehicles with full-time four-wheel drive system cannot adjust the torque according to specific road conditions, resulting in high fuel consumption and poor economy
[0005] 2) Part-time four-wheel drive vehicles only lock the front and rear wheels together, and cannot distribute the torque reasonably, and the driver needs to have certain experience to master the switching action and timing

Method used

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  • Torque distribution method and device for four-wheel drive system of electric automobile
  • Torque distribution method and device for four-wheel drive system of electric automobile
  • Torque distribution method and device for four-wheel drive system of electric automobile

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Embodiment Construction

[0018] 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.

[0019] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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Abstract

The invention discloses a torque distribution method for a four-wheel drive system of an electric automobile. The method includes the steps of collecting operation state parameters of the electric automobile, judging operation working conditions of the electric automobile according to the operation state parameters of the electric automobile, obtaining whole state information of the electric automobile, and distributing the torque of the four-wheel drive system according to the operation working conditions and the whole state information of the electric automobile. By means of the torque distribution method for the four-wheel drive system of the electric automobile, the torque of the four-wheel drive system can be automatically distributed, and the torque of one wheel can be independently controlled; the method is convenient and flexible, the power property of the electric automobile is effectively improved, fuel consumption economy and driving comfort of the electric automobile are greatly improved, and safety is high. The invention further discloses a torque distribution device for the four-wheel drive system of the electric automobile.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a torque distribution method for a four-wheel drive system of an electric vehicle and a torque distribution device for a four-wheel drive system of an electric vehicle. Background technique [0002] At present, the four-wheel drive system of the vehicle is mainly divided into two types: full-time four-wheel drive and part-time four-wheel drive. Among them, the front and rear wheels of the full-time four-wheel drive system vehicle always maintain the four-wheel drive mode, that is, the torque of the front and rear four wheels is fixed. Vehicles with a time-sharing four-wheel drive system require the driver to manually switch between the two-wheel drive mode and the four-wheel drive mode according to the road conditions. This manual switching method can select the drive mode according to the actual situation, which is more economical. [0003] But above-mentioned two kinds of fou...

Claims

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Application Information

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IPC IPC(8): B60W10/08B60W40/00B60W40/105B60K17/356
Inventor 沈强刘淑丽席良友单泽亚祁文静张敏
Owner BYD CO LTD
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