EV Navigation Route Planning Using Charging Reservation Data
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Solution Overview
Problem
Existing navigation systems for electric vehicles do not account for the availability of charging facilities at the destination, leading to potential issues with battery charging, as they do not confirm reservations and adjust guidance plans accordingly.
Innovation Solution
A navigation apparatus with a remaining charge amount detector, guidance plan calculator, and reservation data obtainer that calculates a guidance route and charge amount based on destination, battery status, and charging facility reservations, ensuring sufficient charge upon arrival.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the navigation apparatus calculates a guidance plan without confirming charging facility reservations, then the calculation process is simple and fast, but the reliability of charging at the destination is compromised
Solution Approach 1:
The navigation apparatus performs preliminary acquisition of reservation information for charging facilities before finalizing the guidance plan. By checking reservation status in advance and incorporating it into the calculation, the system ensures reliable charging availability while maintaining an efficient workflow through pre-planned information gathering.
2Reliability
If the navigation apparatus charges to full capacity at every charging facility, then the battery is always sufficiently charged, but excess charging occurs when the destination is nearby
Solution Approach 1:
The navigation apparatus dynamically adjusts the charge amount based on real-time factors including remaining distance to destination, current battery charge level, and power consumption characteristics. This dynamic calculation prevents excessive charging by determining the precise charge amount needed to reach the destination, thereby reducing energy waste while ensuring sufficient battery power.
3Reliability
If the navigation apparatus does not consider reservation status, then the guidance plan calculation is faster, but the user may arrive at a destination without available charging facilities
Solution Approach 1:
The system performs preliminary acquisition of reservation information and integrates it into the guidance plan calculation process. By having reservation data ready before final plan determination, the system ensures charging availability reliability without significant time penalty, as the information gathering is performed as part of the standard planning workflow.
Data Source
AI summary
A navigation apparatus includes a remaining charge amount detector, a guidance plan calculator, and a reservation data obtainer. The remaining charge amount detector is configured to detect a remaining charge amount of a storage battery of a vehicle. The guidance plan calculator is configured to calculate a guidance route along which a charging facility is set as a stopover point and a charge amount to be charged at the charging facility. The reservation data obtainer is configured to acquire data on a reservation of the charging facility positioned at a destination. The guidance plan calculator is configured to calculate the guidance route and the charge amount, by changing, based on data on the reservation, the remaining charge amount to be maintained at the time when the vehicle arrives at the destination.