Method and apparatus for evaluating residual available energy of battery of battery electric vehicle

The technology of a pure electric vehicle and an estimation device is applied in the field of estimation of the remaining available energy of a battery pack for a pure electric vehicle, and can solve the problems of poor estimation accuracy and low accuracy of the remaining mileage.

Active Publication Date: 2015-10-14
深蓝汽车科技有限公司
View PDF5 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Due to the inaccurate estimation of the remaining usable energy of the battery pack, the estimation accuracy of the remaining mileage is poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for evaluating residual available energy of battery of battery electric vehicle
  • Method and apparatus for evaluating residual available energy of battery of battery electric vehicle
  • Method and apparatus for evaluating residual available energy of battery of battery electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0072] In order to improve the accuracy of the estimation result of the remaining available energy of the battery pack, an embodiment of the present invention provides a method for estimating the remaining available energy of the battery pack for pure electric vehicles, such as figure 1 shown, including steps:

[0073] S11. Obtain the current va...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A method and apparatus for evaluating the residual available energy of a battery pack of a battery electric vehicle are disclosed. The method includes obtaining current value of the battery pack, calculating and generating battery theory SOC value SOCAh according to the current value, obtaining current SOC value SOC act of the battery pack, calculating and generating SOC difference SOCdiff caused by inconsistency of cell units, generating real SOC value SOCreal of the battery pack, obtaining allowed SOC lower limit SOCend of the battery pack according to the state of the battery pack, obtaining the average voltage Uavrg within a preset future time period of the battery pack, and calculating and generating residual available energy of the battery pack according to a formula. False great difference between theoretical battery SOC value and current SOC value of the battery pack is prevented, error due to inconsistency of cell units can be corrected, estimation of residual available energy of the battery pack is more accurate, and the estimated accuracy of residual mileage is improved.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a method and device for estimating the remaining available energy of a battery pack for a pure electric vehicle. Background technique [0002] Electric vehicles include hybrid vehicles and pure electric vehicles; among them, pure electric vehicles use electricity as the only driving force. [0003] In practical applications, drivers of pure electric vehicles need to know the remaining mileage, that is, they need to know the distance that the pure electric vehicle can travel, so that they can charge the pure electric vehicle in time, or choose a more reasonable driving method and driving route , in order to reduce the probability that pure electric vehicles cannot drive due to insufficient power. [0004] In this field, the estimation of the remaining mileage is generally obtained according to the remaining available energy of the battery pack and the average kilometer energy consu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 王艳静冯超傅洪
Owner 深蓝汽车科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap