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Electric vehicle braking energy recovery control method

A technology of braking energy recovery and control method, which is applied in electric vehicles, electric braking systems, control driving, etc., can solve the problems of inability to control motor torque and low energy recovery efficiency.

Active Publication Date: 2020-10-20
摩登汽车有限公司
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  • Summary
  • 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 an electric vehicle braking energy recovery control method, which comprises the steps of determining the driving working condition of an electric vehicle according to accelerator pedal information and brake pedal information; when the driving working condition of the electric vehicle is a sliding working condition, conducting sliding braking energy recovery; when the drivingworking condition of the electric vehicle is a braking working condition, determining a braking strategy of the electric vehicle according to the opening degree of a brake pedal; and when the electric vehicle is braked by adopting motor braking and mechanical braking together, acquiring the reverse drag force torque of the motor according to the braking deceleration information and the steering wheel angle information, and controlling the motor according to the reverse drag force torque. According to the scheme, the driving working condition of the electric vehicle is determined according tothe accelerator pedal information and the brake pedal information, then the reverse drag torque of the motor is requested for the sliding working condition and the braking working condition, and the electric vehicle is braked by utilizing the reverse drag torque. Different motor reverse drag torques are requested according to different working conditions, so that the energy recovery efficiency canbe 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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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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