EV Route Guidance Using Reachable Charging Range Forecasts
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Solution Overview
Problem
Existing systems fail to provide information about reachable charging facilities for electric and hybrid vehicles when the vehicle's remaining power falls below a certain threshold, potentially leaving no charging options en route to a destination.
Innovation Solution
An information providing apparatus that calculates a forecasted remaining amount of power and determines a reachable range from charging facilities based on historical data, allowing for the presentation of a scheduled travel route that includes a charging facility within this range, thereby preventing the situation of no reachable charging facilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle travels to a destination without considering charging facility availability, then the travel route is simple and direct, but the vehicle may reach points where no charging facilities are available
Solution Approach 1:
The system performs preliminary calculations of forecasted remaining power amounts at multiple forecasted travel points along the route before the vehicle actually reaches them. By anticipating future power states and identifying charging needs in advance, the system ensures charging facilities are available when needed, resolving the contradiction between route simplicity and charging reliability.
Solution Approach 2:
The system uses historical data on remaining power amounts and charging facility usage to continuously refine and update the reachable range calculations. This feedback mechanism improves the accuracy of charging facility availability predictions, enhancing reliability without proportionally increasing route planning complexity.
2Reliability
If the system calculates reachable ranges using historical data, then charging facility availability is improved, but data processing complexity increases
Solution Approach 1:
The system leverages the vehicle's own historical remaining power amount data and charging facility usage records to calculate its specific reachable range. By using self-generated data rather than requiring extensive external databases or complex third-party integrations, the system improves charging reliability while minimizing data processing complexity.
3Reliability
If the system presents routes ensuring charging availability, then charging reliability is improved, but route selection flexibility is reduced
Solution Approach 1:
The system calculates forecasted remaining power amounts at multiple forecasted travel points beyond the immediate next point, creating a buffer of anticipated power states. This partial lookahead approach ensures charging availability is guaranteed while maintaining reasonable route flexibility, as the system only constrains the route when necessary based on the forecasted power depletion patterns.
Data Source
AI summary
An information providing apparatus included in a vehicle includes: a remaining-amount-of-power acquisition unit that calculates a forecasted remaining amount of power for a forecasted travel point of a host vehicle; a range calculation unit that calculates, as a reachable range, a predetermined range from a charging facility on the basis of a record of a remaining amount of power of the vehicle and a record of using the charging facility of the vehicle; and a presentation processing unit that presents a scheduled travel route selected on the basis of the reachable range.