EV Navigation Reachability Assessment
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Solution Overview
Problem
Navigation systems for electric vehicles lack the ability to accurately determine the reachability of charging stations based on the vehicle's current position and energy state, leading to user uncertainty about reaching the destination and returning to a selected charging station.
Innovation Solution
A navigation system that uses a computing unit to ascertain the reachability of a charging station by considering the vehicle's current position, the charging station's position, and the energy storage device's state, outputting this information to the user through a display, and includes features like database entry management and attribute-based reachability determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a navigation system provides basic route guidance to charging stations, then users can receive direction information, but users cannot determine whether the charging station is actually reachable with current energy levels
Solution Approach 1:
The patent combines the navigation system with the energy management system, merging route guidance functionality with energy level monitoring and reachability assessment. The computing unit integrates data from both systems to provide comprehensive reachability information, eliminating the need for separate systems while reducing overall complexity.
Solution Approach 2:
The navigation system is enhanced to perform multiple functions: basic route guidance, energy level monitoring, reachability determination, and dynamic route adjustment. This multi-functionality allows a single system to provide comprehensive assistance without requiring additional dedicated devices.
2Reliability
If the navigation system calculates route to charging station without considering energy state, then route calculation is simple and fast, but the charging station may not be reachable with current energy levels
Solution Approach 1:
The system performs preliminary energy level assessment and reachability determination before finalizing the route calculation. By evaluating energy constraints in advance, the system ensures that selected routes are actually reachable while maintaining efficient calculation through pre-computed energy requirements for different route segments.
Solution Approach 2:
The navigation system continuously monitors energy levels and provides feedback to the route calculation algorithm. This feedback loop allows the system to adjust routes dynamically based on current energy state, ensuring reachability while maintaining calculation efficiency through iterative optimization rather than exhaustive re-computation.
3Ease of operation
If the system provides detailed reachability information and energy monitoring, then user confidence in reaching destination increases, but the system requires more complex computing and data processing
Solution Approach 1:
The system automatically monitors energy levels, calculates reachability, and adjusts routes without requiring manual user input or complex configuration. The computing unit autonomously processes data from the energy management system and navigation database, providing user-friendly information while minimizing the need for sophisticated user-side processing.
Data Source
AI summary
A navigation system for an electric vehicle may ascertain a selection of a charging station based on a user input, wherein a stored position of the charging station is an ultimate destination. The navigation system can ascertain a current position of the electric vehicle. In addition, the navigation system can ascertain a reachability of a target position that is separated from the current position and the stored position of the charging station. The ascertainment of reachability can be based on the current position of the electric vehicle, the stored position of the selected charging station, and the current state of charge of the energy storage device, so that the target position and subsequently the stored position of the selected charging station are reachable with the current state of charge of the energy storage device.