EV Charging Alert Logic with Dynamic Reference Adjustment
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Solution Overview
Problem
Conventional information provision systems for electric vehicles (EVs) often provide unnecessary charging facility information due to fluctuations in battery capacity caused by regenerative braking, leading to excessive server access and user annoyance.
Innovation Solution
An information provision apparatus that modifies its provision conditions to reduce the frequency of providing energy replenishment information after the initial alert, using a lower determination reference value or prohibiting information provision for a predetermined time, and includes a replenishment operation detection unit to reset conditions appropriately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If charging facility information is provided whenever remaining battery capacity falls below the determination reference value, then the vehicle passenger receives timely charging alerts, but the information is provided more times than necessary due to regenerative energy fluctuations
Solution Approach 1:
The provision control unit dynamically adjusts the determination reference value based on vehicle travel history. After charging facility information has been provided, the reference value is temporarily raised to prevent redundant alerts during regenerative energy fluctuations, while still maintaining sensitivity to genuine charging needs.
Solution Approach 2:
The system implements feedback by monitoring whether charging facility information has been recently provided. When information has been provided, the modification unit adjusts the provision condition to suppress subsequent alerts until the vehicle travels a predetermined distance or time, preventing feedback loops of redundant information provision.
2Reliability
If the information provision apparatus accesses the server frequently to obtain charging facility information, then the passenger receives updated information, but the server access becomes overcrowded and information retrieval slows down
Solution Approach 1:
The system transitions from event-driven server access to periodic access based on travel distance and time. The modification unit suppresses server access requests during a predetermined period after initial information provision, reducing server load while maintaining acceptable information freshness through reasonable periodic updates.
3Ease of operation
If the determination reference value is kept low to detect charging needs early, then charging alerts are provided proactively, but alerts are triggered unnecessarily by normal battery capacity variations
Solution Approach 1:
The determination reference value is dynamically adjusted based on operational context. It remains low for proactive detection during normal operation but is temporarily raised after information provision to filter out false triggers from regenerative energy fluctuations, achieving both proactive notification and accurate detection.
Data Source
AI summary
An information provision apparatus including: a provision control unit (40, 30) configured to provide a vehicle passenger with energy replenishment information relating to energy replenishment of a vehicle-driving energy supply source (20) that is capable of storing regenerative energy regenerated from rotational energy of a vehicle wheel, when a remaining energy amount of the energy supply source (20) falls below a determination reference value; and a modification unit (40) configured to modify a provision condition that is a condition on which the provision control unit (40, 30) provides the energy replenishment information, so that after the energy replenishment information is once provided when the remaining energy amount falls below the determination reference value, the energy replenishment information is less likely to be provided than before the energy replenishment information is once provided.