EV Navigation Control for Communication Dead Zones and Battery Range
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Solution Overview
Problem
The insufficient availability of charging stations for electric vehicles and the difficulty in downloading map data in areas with poor communication can lead to a shortage of battery power before reaching a charging station, making it challenging to calculate a safe traveling distance.
Innovation Solution
An in-vehicle apparatus with a navigator, area information extractor, battery residual capacity monitor, traveling mode selector, and travel information manager that determines communication difficulty areas and suggests power-saving or emergency power-saving modes to ensure the vehicle can traverse these areas, reducing electric power consumption and avoiding battery depletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle travels in a communication difficulty area, then the vehicle can reach destinations in areas with poor communication infrastructure, but the battery residual capacity may become insufficient before reaching a charging station
Solution Approach 1:
The travel information manager performs preliminary actions by determining communication states in advance, identifying communication difficulty areas before the vehicle enters them, and calculating the required battery capacity to traverse these areas. This allows the system to proactively manage power consumption by switching to power-saving modes before battery depletion occurs, rather than reacting after the problem arises.
Solution Approach 2:
The system dynamically adjusts the traveling mode based on real-time conditions. When a communication difficulty area is detected ahead of the vehicle's route, the system switches from normal traveling mode to power-saving or emergency power-saving modes. This dynamic adjustment allows the vehicle to adapt its power consumption to match the upcoming operational requirements, ensuring sufficient battery capacity to traverse challenging areas.
2Use of energy by moving object
If the vehicle uses power-saving traveling mode to reduce electric power consumption, then battery residual capacity is preserved, but the vehicle may not have enough power to pass through communication difficulty areas
Solution Approach 1:
The system implements dynamic mode switching based on predictive analysis. The travel information manager calculates whether the vehicle can traverse upcoming communication difficulty areas in the current power-saving mode. If the calculation shows insufficient battery capacity, the system dynamically transitions to emergency power-saving mode or alerts the occupant to charge before entering the difficult area. This dynamic adjustment ensures the vehicle maintains enough power to complete the traversal while minimizing overall power consumption.
3Measurement precision
If the vehicle downloads map data in areas with poor communication, then navigation accuracy is improved, but the process may take too long or fail due to communication difficulties
Solution Approach 1:
The system performs map data downloads in advance, before the vehicle enters communication difficulty areas. By completing data acquisition while communication infrastructure is still available, the system ensures navigation accuracy is maintained without experiencing the time delays or failures that would occur if downloads were attempted within the communication difficulty area itself.
Data Source
AI summary
An in-vehicle apparatus to be applied to a vehicle includes a navigator, an area information extractor that extracts data on a communication difficulty area, a battery residual capacity monitor that monitors a traveling battery residual capacity, a traveling mode selector that receives a selected traveling mode, a travel information manager that determines a communication state in a traveling direction of the vehicle based on the data received from the area information extractor, and calculates a possible traveling distance of the vehicle based on the selected traveling mode and the traveling battery residual capacity, and a notifier that notifies the occupant of travel information on the vehicle. When determining that the vehicle is to travel in the communication difficulty area, the travel information manager proposes a switch to a traveling mode in which the vehicle is able to pass through the communication difficulty area to the occupant via the notifier.