EV Charging Certificate Update Before Scheduled Charging
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Solution Overview
Problem
The existing vehicle charging systems prolong the charging time when the transponder key's validity term expires, requiring an update during the charging process.
Innovation Solution
A charging control device and method that uses a digital certificate, acquiring charging schedule information and outputting a request signal for updating the digital certificate when its validity term expires, allowing for timely updates before charging begins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transponder key validity term expires during charging, then authentication fails and charging must be interrupted, but updating the transponder key during charging prolongs the charging time
Solution Approach 1:
The system performs digital certificate update in advance by detecting expiration dates and proactively initiating updates before the charging schedule time, ensuring authentication reliability is maintained without interrupting the charging process
2Reliability
If the digital certificate is updated proactively before charging, then authentication reliability is maintained, but system complexity increases
Solution Approach 1:
The charging control device monitors the digital certificate expiration date and charging schedule information, using feedback from these parameters to automatically determine when proactive updates are needed, maintaining reliability without requiring complex manual intervention systems
3Measurement precision
If the charging schedule information is acquired from multiple sources, then information accuracy improves, but data acquisition complexity increases
Solution Approach 1:
The charging control device is designed to universally acquire charging schedule information from multiple sources including input terminals and user terminals, enabling flexible information gathering while maintaining a unified control architecture that manages the complexity
Data Source
AI summary
A charging control device includes: an acquisition unit that is configured to acquire charging schedule information related to a scheduled timing of charging; and a signal output unit that is configured to output a request signal for updating a digital certificate when a term of validity of the digital certificate expires by the scheduled timing of charging.