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Electric vehicle braking energy recovery control method

A braking energy recovery and control method technology, applied in electric vehicles, electric braking systems, power management and other directions, can solve the problems of inability to control motor torque and low energy recovery efficiency, achieve good pedal feel, improve driving experience, The effect of improving accuracy

Active Publication Date: 2022-03-18
摩登汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that the torque of the motor cannot be controlled during energy recovery, resulting in low energy recovery efficiency

Method used

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  • Electric vehicle braking energy recovery control method
  • Electric vehicle braking energy recovery control method
  • Electric vehicle braking energy recovery control method

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Embodiment Construction

[0072] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be presented in conjunction with a preferred embodiment, it does not mean that the features of the invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the present invention. The following description contains numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Also, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invent...

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Abstract

The invention provides a braking energy recovery control method for an electric vehicle, which includes determining the driving condition of the electric vehicle according to the accelerator pedal information and the brake pedal information; and performing coasting braking when the driving condition of the electric vehicle is a coasting condition energy recovery; when the driving condition of the electric vehicle is the braking condition, the braking strategy of the electric vehicle is determined according to the opening of the brake pedal; When the electric vehicle is braking, the anti-drag torque of the motor is obtained according to the braking deceleration information and the steering wheel angle information, and the motor is controlled according to the anti-drag torque. This scheme determines the driving condition of the electric vehicle according to the information of the accelerator pedal and the brake pedal, and then requests the anti-drag torque of the motor for the sliding and braking conditions, and uses the anti-drag torque to brake the electric vehicle . By requesting different motor anti-drag torques according to different working conditions, the efficiency of energy recovery can be improved.

Description

technical field [0001] The invention relates to the technical field of energy recovery, in particular to a braking energy recovery control method for an electric vehicle. Background technique [0002] The battery is the core component of an electric vehicle, and the energy storage capacity of the battery determines the mileage of the electric vehicle. The mileage of current electric vehicles still cannot meet the needs of users. To improve the range of electric vehicles, energy recovery is becoming more and more important. [0003] Energy recovery is an effective means to improve the battery life of electric vehicles under the premise of ensuring that the battery power remains unchanged. It mainly converts the kinetic energy of the electric vehicle into electric energy when it decelerates and brakes, and then recycles it into the battery, which can increase the cruising range of the electric vehicle. [0004] However, the existing energy recovery method cannot control the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L7/18B60L15/20
CPCB60L7/18B60L15/2009B60L2240/423Y02T10/72
Inventor 杜江浩张博
Owner 摩登汽车有限公司
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