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Electric vehicle driving range prediction method and device

A technology for driving range and electric vehicles, applied in the computer field, can solve the problems that the estimation method cannot be taken into account, the estimation results are rough, and the battery is exhausted.

Inactive Publication Date: 2020-04-21
HUMAN HORIZONS (JIANGSU) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing estimation method cannot take into account the actual use status of the vehicle, resulting in a very rough estimation result, and it is easy to run out of power when the estimated mileage is not reached, causing trouble to the user

Method used

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  • Electric vehicle driving range prediction method and device
  • Electric vehicle driving range prediction method and device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0048] See figure 1 , shows a method flowchart of a method for predicting the driving range of an electric vehicle provided by the first embodiment of the present invention. The methods include:

[0049] Step S10: Acquiring the available power and running resistance of the vehicle; wherein, the running resistance is the estimated resistance generated by the vehicle in the future driving section;

[0050] Step S20: Obtain the driving power of the vehicle according to the running resistance of the vehicle;

[0051] Step S30: Obtain the power consumption of the vehicle accessory according to the usage status of the vehicle accessory and the user's historical usage data of the vehicle accessory; wherein, the power consumption is the estimated future driving of the vehicle the power consumed by the on-board accessories mentioned in the section;

[0052] Step S40: Obtain the driving range of the vehicle according to the available electric quantity, the driving power and the power c...

specific Embodiment approach

[0080] In step S20, since the driving power is estimated based on the actual situation of the road section to be driven in the future and the user's habits, it is not simply obtained according to the vehicle state before the point. The driving power thus obtained is more real and reliable. The specific implementation manner of step S20 is as follows:

[0081] Step S21: Obtain the rotational speed of the motor of the vehicle according to the speed of the vehicle; wherein, the speed of the vehicle is the estimated speed of the vehicle on the road section in the future;

[0082] Step S22: Find the motor efficiency of the vehicle according to the rotational speed;

[0083] Step S23: Obtain the driving power according to the driving resistance, the motor efficiency, the road topology efficiency factor, the traffic condition efficiency factor, the speed limit information efficiency factor and the feedback habit efficiency factor;

[0084] Wherein, the road topology efficiency fact...

no. 2 example

[0102] Based on the same inventive concept, the second embodiment of the present invention provides a device 300 for predicting the driving range of an electric vehicle. figure 2 A block diagram of functional modules of a device 300 for predicting the driving range of an electric vehicle provided by the second embodiment of the present invention is shown.

[0103] The device 300 includes:

[0104] An acquisition module 301, configured to acquire the available power of the vehicle and the running resistance; wherein, the running resistance is the estimated resistance generated by the vehicle in the future driving section;

[0105] A driving power acquisition module 302, configured to obtain the driving power of the vehicle according to the driving resistance of the vehicle;

[0106] The power consumption acquisition module 303 is configured to obtain the power consumption of the vehicle accessory according to the usage state of the vehicle accessory of the vehicle and the use...

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Abstract

The invention discloses an electric vehicle driving range prediction method and device. The method comprises the following steps: acquiring the available electric quantity and the driving resistance of the vehicle, wherein the driving resistance is the estimated resistance generated by the vehicle in a future driving road section; obtaining the driving power of the vehicle according to the drivingresistance of the vehicle; according to the use state of the vehicle-mounted accessory of the vehicle and the historical use data of the vehicle-mounted accessory by the user, obtaining the consumedpower of the vehicle-mounted accessory; and finally, obtaining the driving range of the vehicle according to the available electric quantity, the driving power and the consumed power. According to themethod, the actual use state of the vehicle on a future road section and user habits are considered, and the accuracy of driving range prediction is remarkably improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for predicting the mileage of an electric vehicle. Background technique [0002] Electric vehicles powered by pure electric energy are becoming more and more popular in people's daily life. Because it is powered by batteries, the battery charging time is longer than that of fuel vehicles. Therefore, the user can accurately understand the driving range of the vehicle during the driving process, which can effectively avoid the long-distance endurance anxiety of the user. The current electric vehicles will predict the mileage of the vehicle. The method used is to estimate the SOC (state of charge evaluation) of the vehicle battery, and then obtain the storage power of the vehicle, and then according to the average energy consumption level of the vehicle Estimate the remaining driving range of the vehicle. [0003] However, the existing estimation method cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/12B60L3/12
CPCB60L3/12B60L58/12B60L2260/52Y02T10/70
Inventor 宋敬育
Owner HUMAN HORIZONS (JIANGSU) TECH CO LTD
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