Dynamic Safety Rating Adjustment for EV Charging Station Selection
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Solution Overview
Problem
Electric vehicle users face challenges in finding safe and suitable charging stations along their travel route, as existing systems lack real-time safety and utility rating information, potentially leading to dangerous or inconvenient charging locations.
Innovation Solution
A vehicle communication system that sends location and route data to a remote server to obtain safety ratings for nearby charging stations, adjusting the desired safety rating based on the battery's state of charge, and displaying stations with safety, activity, and utility ratings that exceed user-defined criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle prioritizes high safety rating charge stations, then user safety is improved, but the number of available charging stations decreases
Solution Approach 1:
The system dynamically adjusts the desired safety rating threshold based on the battery's state of charge. When SOC is high, the system maintains a high safety rating requirement. When SOC drops below thresholds (50%, 20%, 10%), the system automatically lowers the safety rating requirement to expand the pool of acceptable charging stations, ensuring the vehicle can find available charging options regardless of safety preferences.
Solution Approach 2:
The system changes the safety rating parameter threshold based on battery state of charge conditions. By modifying the safety rating parameter dynamically according to SOC levels, the system resolves the contradiction between maintaining high safety standards and ensuring charging station availability when battery charge is low.
2Reliability
If the vehicle maintains a high desired safety rating, then charging safety is improved, but the ability to find charge stations when battery charge is low deteriorates
Solution Approach 1:
The system implements dynamic adjustment of safety rating requirements based on real-time battery state of charge monitoring. This dynamic approach allows the system to maintain high safety standards when battery charge is sufficient, while automatically relaxing safety requirements when battery charge drops, ensuring charging stations remain accessible under all battery conditions.
Solution Approach 2:
The system continuously monitors battery state of charge and uses this feedback to adjust the desired safety rating parameter. This closed-loop feedback mechanism ensures that safety requirements are appropriately adjusted based on the vehicle's energy state, balancing safety concerns with charging accessibility.
3Reliability
If the system displays only charge stations meeting the desired safety rating, then safety quality is improved, but the information completeness for user decision-making deteriorates
Solution Approach 1:
The system segments the display of charge stations into different categories based on their safety ratings relative to the desired threshold. Charge stations are divided into those meeting the safety requirement and those below it, allowing users to see both options and make informed decisions based on their current needs and preferences.
Solution Approach 2:
The system applies different information presentation strategies to different charge stations based on their safety ratings. Stations meeting the safety threshold receive standard presentation, while stations below the threshold are clearly distinguished, allowing users to understand the quality differences and make appropriate choices.
Data Source
AI summary
A vehicle may require an electric recharge. A request may be sent to obtain identification of charge locations along a route. Along with the request, data may be sent identifying vehicle location, route, and desired safety rating. A response may be obtained from a remote server, and the results may be displayed, which include the safety rating of the charge station. The desired safety rating may be adjusted based on the battery's state of charge (SOC). The desired safety rating, for example, may be decreased as the battery state of charge decreases.