Vehicle energy feedback control method and system, and vehicle

A technology of energy feedback and control method, applied in the direction of climate sustainability, road transportation, sustainable transportation, etc., can solve the problems of single mode, the actual experience of the driver is not very good, and cannot meet the actual road conditions, so as to reduce the actual operation. , the effect of enhancing the experience

Active Publication Date: 2020-03-20
BYD CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

The inventor found that the vehicle energy feedback strategy in the prior art has a relatively single mode, which cannot meet the actual road conditions, and the actual experience of the driver is not very good

Method used

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  • Vehicle energy feedback control method and system, and vehicle
  • Vehicle energy feedback control method and system, and vehicle
  • Vehicle energy feedback control method and system, and vehicle

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Embodiment Construction

[0018] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0019] In the prior art, the kinetic energy released by the vehicle during braking or coasting can be converted and regenerated into electrical energy by the motor, stored in the battery, and then recovered and reused. Among them, after the vehicle releases the throttle, the vehicle is controlled to decelerate at a certain deceleration rate, and the energy in the deceleration process is recovered and reused through the motor. Specifically, after the driver releases the accelerator, t...

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Abstract

The invention discloses a vehicle energy feedback control method which comprises the following steps: acquiring and sending road surface gradient parameters; calculating a motor feedback torque according to the road surface gradient parameter; and controlling a motor of the vehicle to generate power according to the motor feedback torque. In the prior art, a driver needs to step on a brake pedal after loosening an accelerator pedal when facing a road surface with a slope, particularly a downhill road condition, so that the danger caused by overhigh vehicle speed is avoided, the loss of a vehicle brake friction plate is avoided, and meanwhile, the energy waste is also caused. According to the vehicle energy feedback control method, the feedback torque of the motor can be automatically and timely adjusted according to the current road gradient, the purpose of controlling the speed of the vehicle can be achieved without the need for a driver to step on a brake pedal, meanwhile, kinetic energy of the vehicle is converted into electric energy to be stored, the purposes of energy conservation and emission reduction are achieved, in addition, actual operation of the driver is reduced, andthe experience of the driver is improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a vehicle energy feedback control method, system and vehicle. Background technique [0002] The existing vehicle energy feedback control strategy enters the energy feedback mode after the driver releases the accelerator. The vehicle is preset with a fixed motor feedback torque after leaving the factory. When the vehicle enters the energy feedback mode, the motor controller controls the motor to perform energy feedback with the preset motor feedback torque, and the motor generates electricity to charge the battery. The inventors found that the vehicle energy feedback strategy in the prior art has a relatively single mode, which cannot meet the actual road conditions, and the actual experience of the driver is not very good. Contents of the invention [0003] One of the objectives of the present invention is to provide a vehicle energy feedback control method, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W40/06
CPCB60W30/18009B60W40/06Y02T10/60Y02T10/72
Inventor 秦岭
Owner BYD CO LTD
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