EV Route Guidance for Low-Temperature Battery and Charging Risk
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Solution Overview
Problem
Electric vehicles face increased electricity shortage risk and prolonged charging times in low temperature conditions, leading to delayed deliveries and inefficient operations.
Innovation Solution
A guidance system that analyzes travel routes to avoid low temperature areas, prioritizes routes based on battery state of charge, distance, and temperature, and provides optimized charging plans to maintain battery health and prevent electricity shortages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric vehicle operates in low temperature conditions, then the battery capacity and charging speed decrease significantly, but avoiding low temperature routes may increase delivery time and reduce productivity
Solution Approach 1:
The system performs preliminary analysis of weather forecasts and route temperatures before the vehicle departs. It calculates the state of charge at arrival times for multiple candidate routes and identifies charging stations in advance, allowing the driver to make informed decisions before leaving without affecting delivery schedules
Solution Approach 2:
The system dynamically adjusts route recommendations based on real-time weather forecasts and battery state of charge. It provides multiple route options with different priorities (shortest distance, shortest time, most suitable for battery) and allows flexible re-planning during trips when weather conditions change, optimizing both battery protection and delivery efficiency
2Reliability
If intermediate charging is performed to prevent battery discharge in low temperature zones, then electricity shortage risk is reduced, but charging time increases and delivery is delayed
Solution Approach 1:
The system calculates the state of charge at arrival times at various charging stations along candidate routes before departure. It identifies optimal charging stops in advance and plans the overall route to minimize total charging time while ensuring the battery reaches sufficient charge levels before entering low temperature zones
Solution Approach 2:
The system maintains a safety margin in the state of charge by planning routes that ensure the battery arrives at charging stations with sufficient charge to reach them safely. It buffers against uncertainty in battery performance in cold temperatures by not operating at maximum capacity limits
3Reliability
If the vehicle avoids low temperature areas by selecting alternative routes, then battery performance is maintained, but the route distance and delivery time may increase
Solution Approach 1:
The system provides multiple dynamic route options that can be adjusted based on current battery state of charge and weather conditions. If the battery is sufficiently charged, the system may allow passage through cooler areas; if charge is low, it automatically selects warmer alternative routes, optimizing the balance between battery protection and route efficiency
Data Source
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AI summary
A travel route acquisition unit acquires a travel route of an electric vehicle. A weather information acquisition unit acquires weather information on the travel route. A route guidance information generation unit generates route guidance information based on the travel route thus acquired and the weather information thus acquired. When a low temperature area is present on the travel route, the travel route acquisition unit further acquires a different travel route, and the route guidance information generation unit generates route guidance information that recommends a travel route with few low temperature areas.