EV Charging Notifications Based on User Position and Return Time

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Solution Overview

Problem

Long occupancy times at charging stations lead to increased waiting times and unnecessary blocking fees for electric vehicle users, as existing systems require users to constantly monitor their vehicle's charging status and parking time, which is inefficient and burdensome.

Innovation Solution

A method and system that uses position information from a communication device to determine a triggering condition for notifying users when to retrieve their vehicle, considering distance, route, and mode of transportation, ensuring timely retrieval before parking time expires.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If users constantly monitor their vehicle's charging status and parking time, then they can avoid blocking fees, but this increases user burden and reduces convenience

Engineering Contradiction:
Improveavoidance of blocking feesVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system enables self-service by automatically monitoring charging status, calculating remaining parking time, and sending notifications to users without requiring manual intervention. The charging station and communication device work together to provide timely alerts, freeing users from constant monitoring while ensuring they receive critical information about retrieval deadlines.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements feedback by continuously monitoring charging parameters and parking time, then providing real-time information to users through notifications. This closed-loop feedback mechanism keeps users informed about their vehicle's status and the remaining time available at the charging station, enabling them to retrieve the vehicle promptly without incurring blocking fees.

Inventive Principle:
Principle #23Feedback

2Reliability

If charging stations are occupied for long times after charging completion, then users can avoid blocking fees by staying nearby, but this increases waiting times for other users and reduces charging station availability

Engineering Contradiction:
Improveavoidance of blocking feesVSAvoidcharging station availability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary action by calculating the remaining parking time in advance and sending notifications to users before the blocking fee period begins. This allows users to plan their vehicle retrieval in advance, ensuring they leave the charging station within the permitted time and making the charging station available for other users, thus resolving the contradiction between avoiding fees and maintaining station availability.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If users are notified only when charging is complete, then the notification system is simple, but users may not have enough time to return to the vehicle before parking time expires

Engineering Contradiction:
Improvenotification system complexityVSAvoidtime to return to vehicle
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The system applies preliminary action by calculating the remaining parking time based on charging completion and sending notifications in advance, giving users sufficient time to return to the vehicle before the blocking fee period begins. This advance notification approach balances system simplicity with providing users adequate response time.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12462661B2Method and system for providing information to a user during the charging of an electric energy accumulator of a motor vehicle
Publication Date: 2025.11.04 AUDI AG
  • US12462661B2 patent drawing

AI summary

A method for providing information to a user during the charging of an electric energy accumulator of a motor vehicle by a charging station comprises, upon fulfillment of a triggering condition, the fulfillment of which is dependent on a connection time at which the motor vehicle is connected to the charging station, and/or an ascertained state of charge of the energy accumulator, putting out a notification message via a communication device of the user, wherein the fulfillment of the triggering condition is further dependent on position information regarding the position of the user and/or that of the communication device.