Automobile braking energy recovery efficiency determination method, device and system

A technology of energy recovery efficiency and determination method, applied in the automotive field, can solve the problems of impact evaluation results, low recovery efficiency accuracy, etc., and achieve the effect of improving accuracy

Active Publication Date: 2021-06-01
BYD CO LTD
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Problems solved by technology

[0004] During the research process, the inventor found that, in related technologies, when determining the braking energy recovery efficiency during the braking process of the vehicle, there is a large deviation between the determined recovery efficiency of the vehicle during the braking process and the actual recovery efficiency of the vehicle. As a result, the accuracy of the regenerative efficiency of the determined vehicle during the braking process is low, which ultimately leads to the evaluation of the vehicle based on the braking energy regenerative efficiency, which affects the evaluation results

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  • Automobile braking energy recovery efficiency determination method, device and system
  • Automobile braking energy recovery efficiency determination method, device and system
  • Automobile braking energy recovery efficiency determination method, device and system

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Embodiment Construction

[0121] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0122]Before explaining the method for determining the braking energy recovery efficiency of the vehicle provided by the embodiment of the present invention, the application scenario of the embodiment of the present invention will be described in detail: in the related art, when determining the braking energy recovery efficiency of the vehicle, first obtain the test vehicle The state information during the braking process, and then, according to the sta...

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Abstract

The embodiment of the invention provides an automobile braking energy recovery efficiency determination method, device and system. The automobile braking energy recovery efficiency determination method comprises the steps that first braking state information of a tested automobile is obtained, wherein the braking state information comprises the automobile speed of the tested automobile in the braking process, the voltage of a motor controller in the tested automobile, the current of the motor controller, the mass of the tested automobile, the acceleration of the tested automobile and the braking time of the tested automobile; and according to the braking state information of the test vehicle, the braking energy recovery efficiency of the test vehicle in the braking process is determined. Namely, in the embodiment of the invention, the braking energy recovery efficiency is determined according to the voltage and the current of the motor controller in combination with other data so that the accuracy of the braking energy recovery efficiency of the tested vehicle in the braking process can be more accurately determined, and finally when the vehicle is evaluated according to the braking energy recovery efficiency, the accuracy of evaluation results is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method, device and system for determining the braking energy recovery efficiency of automobiles. Background technique [0002] Compared with traditional fuel vehicles, the biggest advantage of pure electric vehicles or hybrid vehicles is that they can save energy, and at the same time, they can recover braking energy during braking, thereby improving energy utilization. Recycling braking energy means that during the braking process of the vehicle, the vehicle will release the braking energy, and the braking energy released by the vehicle will be transferred to the power battery in the vehicle through the motor. Therefore, it is necessary to determine the braking energy recovery efficiency during the vehicle braking process. [0003] In related technologies, there are mainly three methods for determining the braking energy recovery efficiency during vehicle braking, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
CPCG01M17/007Y02T10/72
Inventor 朱晓军郭海
Owner BYD CO LTD
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