EV Charging Connector Lock Pin Detection for Reliable Mating
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Solution Overview
Problem
Conventional vehicle charging devices face challenges in improving the reliability of mating control between the charging connector and the vehicle inlet, leading to potential misalignment and malfunction during charging.
Innovation Solution
A vehicle charging device with a lock pin mechanism that protrudes from the housing to mate with a recess in the vehicle inlet, combined with a drive unit to control the lock pin's insertion and a detection unit to monitor its state and any abnormalities, ensuring secure and reliable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock pin mechanism is added to improve mating reliability, then the reliability of mating control is improved, but the device complexity increases
Solution Approach 1:
The lock pin is nested within the housing, with the drive unit disposed inside the housing to actuate the lock pin. This nested arrangement allows the locking mechanism to be integrated into the existing connector structure without requiring separate external components, thereby improving mating reliability while minimizing the increase in overall device complexity.
Solution Approach 2:
The detection unit automatically monitors the insertion state of the lock pin and provides feedback to the control unit, enabling the system to self-verify proper mating without requiring manual intervention. This self-service capability enhances reliability while keeping the operational complexity low through automated detection and reporting.
2Reliability
If a detection unit is added to monitor lock pin insertion state, then the reliability of mating control is improved, but the device complexity and cost increase
Solution Approach 1:
The detection unit provides real-time feedback on the lock pin insertion state to the control unit, which then provides appropriate guidance or warnings to the user. This feedback mechanism ensures that mating reliability is improved through automated monitoring while the complexity is managed by using a straightforward detection-and-report system rather than a complex control algorithm.
Solution Approach 2:
The detection unit replaces manual verification methods with an automated sensing system that can detect the lock pin insertion state electronically or optically. This substitution of mechanical/manual checking with an automated detection system improves reliability while keeping the added complexity minimal compared to the benefits gained.
Data Source
AI summary
A vehicle charging device includes a housing that holds a terminal for charging and mates with an inlet disposed on a vehicle, a lock pin disposed in the housing and inserted into a recess of the inlet by protruding from the housing when the housing is mated with the inlet, a drive unit disposed in the housing and allows the lock pin to protrude from the housing, and a detection unit that detects a state of insertion of the lock pin or an abnormality in the drive unit.