Control method and system for battery electric vehicle shaking

A pure electric vehicle, coefficient technology, applied in electric vehicles, control drives, control devices, etc., can solve problems such as vehicle jitter and impact on customer driving comfort

Inactive Publication Date: 2017-07-21
重庆长安新能源汽车科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The drive motor and the reducer are connected by splines, and the connecting parts such as the clutch and flywheel in the fuel vehicle are removed in the middle. Therefore, the shock absorption effect will

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  • Control method and system for battery electric vehicle shaking
  • Control method and system for battery electric vehicle shaking
  • Control method and system for battery electric vehicle shaking

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[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0061] In order to solve the problems in the prior art, the core idea of ​​the present invention is that if it is determined that the required torque of the drive motor needs to be compensated, the torque compensation step is executed, and if not, the output of the drive motor is controlled according to the required torque. .

[0062] The technical scheme of the present invention is described in detail below.

[0063] See figure 1 , figure ...

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Abstract

The invention provides an inhibiting method and system for battery electric vehicle shaking. According to the method, the current needed torque of a driving motor is obtained firstly; then whether the needed torque needs compensation or not is judged; if the needed torque needs to be compensated, a torque compensation step is conducted; if not, the driving motor is controlled to operate according to the needed torque; and the torque compensation step comprises the content that the compensation torque is obtained through a preset algorithm according to the current motor rotating speed of the driving motor, the compensation torque is used to compensate the needed torque, the output torque is obtained, and the driving motor is controlled to operate according to the output torque. The output torque of the driving motor is obtained through compensation of the compensation torque obtained according to the current motor rotating speed, so that fluctuation of the rotating speed of the driving motor can be eliminated, shaking of the electric vehicle is inhibited, and comfort of a driver in driving is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a vibration control method and system for pure electric vehicles. Background technique [0002] At present, with the continuous development of pure electric vehicle technology, pure electric vehicles have been able to gradually replace traditional fuel vehicles and become the means of transportation for people's daily travel. [0003] Whether it is a traditional fuel vehicle or a pure electric vehicle, the power system is one of the most critical components. The power system of a traditional fuel vehicle is composed of an engine, clutch, flywheel and gearbox, while the power system of a pure electric vehicle is composed of a drive motor and a reducer. [0004] When a pure electric vehicle is running, operations such as slamming on the accelerator or emergency braking will cause a large change in the torque demand of the drive motor, resulting in large fluctuations in t...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/421B60L2240/423Y02T10/72
Inventor 朱天宇苏岭贺刚周洪波陈健
Owner 重庆长安新能源汽车科技有限公司
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