Charging Port Lid Lock Control for Door-Independent EV Charging

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Solution Overview

Problem

Existing vehicle systems that synchronize lid lock devices with door lock devices during external charging hinder user convenience, as users cannot close the lid without unlocking the doors, requiring additional operations to disconnect charging connectors and close the lid after charging is complete.

Innovation Solution

A vehicle control system that independently manages the lid lock device state relative to the door lock state during external charging, keeping the lid lock device unlocked until charging starts and locking it only when charging is complete, allowing users to close the lid without additional operations and ensuring secure disconnection of charging connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the lid lock device is synchronized with the door lock device, then security is improved, but user convenience deteriorates because the user cannot close the lid without unlocking the doors

Engineering Contradiction:
ImprovesecurityVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the control of the lid lock device from the door lock device. The lid lock device is controlled independently based on charging state, while the door lock device operates according to conventional access control. This segmentation allows the lid lock to remain unlocked during charging operations without requiring door unlocking, thus improving user convenience while maintaining security through separate control logic.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lid lock device dynamically adjusts its state based on the charging status. When external charging is detected, the lid lock transitions to an unlocked state automatically, regardless of door lock status. This dynamic behavior enables the system to adapt to charging scenarios, allowing users to close the lid without additional operations while maintaining security during non-charging periods.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the lid lock device is kept unlocked during external charging, then user convenience is improved, but security risk increases

Engineering Contradiction:
Improveuser convenienceVSAvoidsecurity risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system continuously monitors the charging state through feedback from the charging facility and vehicle charging system. Based on this real-time feedback, the lid lock device automatically adjusts its state - remaining unlocked during active charging and locking when charging is complete or not detected. This feedback-based control ensures security is maintained while enabling convenient lid closure during charging operations.

Inventive Principle:
Principle #23Feedback

3Reliability

If additional operations are required to close the lid after charging, then security is maintained, but user convenience deteriorates

Engineering Contradiction:
ImprovesecurityVSAvoidadditional operations
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by automatically setting the lid lock device to an unlocked state before the user needs to close the lid after charging. When external charging is detected, the control device proactively unlocks the lid lock, preparing the system in advance for the anticipated lid closure operation. This eliminates the need for users to perform additional unlocking operations, saving time while maintaining security through automated state management.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12128777B2Vehicle, and control method for vehicle
Publication Date: 2024.10.29 TOYOTA JIDOSHA KK
  • US12128777B2 patent drawing
  • US12128777B2 patent drawing
  • US12128777B2 patent drawing

AI summary

A vehicle includes a first power receiving port, a first lid provided at the first power receiving port, a first lid lock device configured to switch the first lid between locked and unlocked states, and a controller configured to control the first lid lock device to a locked or unlocked state. When an entry door of the vehicle is locked while the first lid is open, the controller is configured to set the first lid lock device to the unlocked state until the first external charging is started, set the first lid lock device to the locked state when the first external charging is started, and set the first lid lock device to the unlocked state when the first external charging completes.