EV Battery Charge Alerts Based on Geofence and Remaining Capacity
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Solution Overview
Problem
Electric vehicles, such as electrically assisted bicycles, face the challenge of notifying users when the battery remaining capacity is low, particularly when the vehicle is far from a charging point, risking the battery draining to zero before returning.
Innovation Solution
A notification system that uses a processor and storage to issue alerts when the vehicle is within a predetermined area where charging is possible and the battery capacity falls below a threshold, allowing the user to charge the battery before it depletes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the notification is issued only when the vehicle arrives at the predetermined charging point, then the notification timing is precise, but the notification may not be issued if the actual position deviates from the detected position
Solution Approach 1:
The notification is issued in advance when the vehicle enters the first area (approaching the charging point) rather than waiting until arrival. This preliminary action ensures the user is notified before the vehicle actually reaches the charging point, accounting for possible position deviations and giving the user sufficient time to respond.
Solution Approach 2:
The system defines a first area surrounding the predetermined charging point and issues notifications when the vehicle enters this area, creating a buffer zone. This cushioning approach compensates for position detection deviations by providing a margin of error, ensuring notifications are issued even if the actual position differs from the detected position.
2Loss of time
If the notification is issued when the vehicle is far from the charging point, then the user has sufficient time to respond, but the battery may deplete to zero before the vehicle reaches the charging point
Solution Approach 1:
The system issues notifications at the appropriate timing by monitoring both the vehicle's position relative to the charging point and the battery's remaining capacity. Notifications are issued preliminarily when the vehicle approaches the charging point (enters the first area) and the battery capacity is below a threshold, but not too early to avoid unnecessary alerts.
Solution Approach 2:
The notification system dynamically adjusts its behavior based on real-time conditions, including the vehicle's position, speed, and battery capacity. The system determines appropriate notification timing by continuously evaluating these dynamic parameters, ensuring notifications are issued at optimal moments rather than using fixed timing rules.
3Reliability
If multiple notifications are issued for the same low battery condition, then the user is repeatedly reminded to charge, but the user may feel annoyed by excessive notifications
Solution Approach 1:
The system uses a notification suppression mechanism that prevents issuing duplicate notifications for the same low battery condition within a specified time period. After issuing a notification, the system suppresses subsequent notifications for the same condition until the suppression period expires or the vehicle leaves the first area and re-enters, providing periodic rather than continuous reminders.
Data Source
AI summary
A notification system for issuing a notification to urge a user to charge a battery of an electric vehicle includes a processor configured or programmed to acquire first border information representing a first border between a first area, encompassing a predetermined point where the battery is chargeable, and an area outward of the first area; acquire positional information representing a current position of the electric vehicle and battery remaining capacity information representing a battery remaining capacity of the battery; and, in a case it is determined that the electric vehicle is inside the first area and the battery remaining capacity is not larger than a first threshold value based on the first border information, the positional information, and the battery remaining capacity information, issue a first notification via a notifier urging the user to charge the battery.