EV Charging Timer Cancellation via Plug Switch State Detection
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Solution Overview
Problem
Existing electric vehicle charging systems require cumbersome operations to cancel charging schedule settings, such as repeated plug insertion and removal or switch manipulation, which can lead to erroneous cancellations.
Innovation Solution
A charging control system with a control unit that cancels schedule settings based on specific switch operations, including detection of fitting and half-fitting states, and incorporates a lock mechanism to ensure intentional cancellations, thereby simplifying the process and reducing erroneous operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If repeated plug insertion and removal operations are required to cancel charging schedule settings, then the charging schedule can be canceled, but the operation becomes time-consuming and cumbersome
Solution Approach 1:
The patent extracts the charging schedule cancellation function from the complex sequence of plug insertion and removal operations. By detecting the plug connection state through a sensor and responding to a simple switch operation, the system separates the cancellation function from the physical plug manipulation, allowing users to cancel schedules with a single button press rather than repeated mechanical operations.
2Ease of operation
If simple switch operations are used to cancel charging schedule settings, then the operation is simplified, but erroneous cancellations may occur
Solution Approach 1:
The patent implements feedback by continuously monitoring the plug connection state sensor and only enabling schedule cancellation when the sensor detects that the plug is actually connected. This feedback mechanism prevents erroneous cancellations by ensuring the cancellation operation is only valid when the charging infrastructure is properly connected, while still allowing simple switch operations for authorized cancellations.
3Reliability
If a lock mechanism is introduced to prevent erroneous cancellations, then reliability improves, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary condition (plug connection state detection) that mediates between the simple switch operation and the schedule cancellation. Rather than implementing a complex mechanical or electronic lock mechanism, the system uses the plug connection sensor as an intermediary gatekeeper that automatically validates whether cancellation is appropriate, adding reliability without significant complexity.
Data Source
AI summary
Provided is a charging control system for an electric vehicle capable of being charged from an external power source. The charging control system includes an inlet which is provided in the electric vehicle and to which a charging gun including an operable S3 switch is connected, and a charging control ECU capable of controlling the charging and performing a setting of timer charging. The charging control ECU cancels the setting of the timer charging on the basis of a predetermined operation on the S3 switch in a state in which the setting of the timer charging has been performed.