Charging Lid Lock Control During EV Program Rewriting
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Solution Overview
Problem
In electrified vehicles, users feel uncomfortable when program updates are executed as they are unable to charge the battery during this process due to prioritization of charging being overridden.
Innovation Solution
A control device locks the charging lid in a closed state during program rewriting and notifies the user through display or audio that charging is not possible, allowing the user to confirm or cancel the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the program update process is prioritized over battery charging, then program rewriting is completed successfully, but the user feels uncomfortable due to inability to charge the battery
Solution Approach 1:
The control device performs preliminary action by notifying the user before program rewriting starts that charging will be unavailable, and by locking the charging lid in advance to prevent charging attempts. This prevents the conflicting state where users expect to charge but cannot, thereby maintaining both program rewriting reliability and user satisfaction.
Solution Approach 2:
The control device provides feedback to the user through notifications (display or audio) explaining that charging is unavailable during program rewriting. This feedback mechanism manages user expectations and reduces discomfort by clearly communicating the system state and reasons, resolving the contradiction between reliable program updates and user satisfaction.
2Reliability
If the charging lid is locked during program rewriting, then charging is prevented to ensure update integrity, but the user cannot access the charging inlet
Solution Approach 1:
The charging lid is locked in advance before program rewriting begins, preventing any charging attempts during the critical update period. This preliminary locking action ensures program update integrity while the notification system maintains user satisfaction by explaining the temporary inaccessibility.
Solution Approach 2:
The lock mechanism applies preliminary anti-action by physically preventing the charging lid from opening during program rewriting. This counteracts any potential user attempt to access the charging inlet, ensuring update integrity while the notification system addresses user concerns about accessibility.
Data Source
AI summary
An electrified vehicle includes a power storage device, a charger that charges the power storage device using power from an external power source, and a charging inlet that is connectable to a charging connector of the external power source and connected to the charger via a power line, an openable and closable charging lid that covers the charging inlet from the outside, a lock mechanism that locks the charging lid in a closed state, and a control device that controls charging of the power storage device by the charger and the lock mechanism and that is able to rewrite a program via wireless communication. The control device locks the charging lid in the closed state by the lock mechanism while rewriting of the program is being executed.