Electric Vehicle Inlet Locking Pin Electromagnetic Control
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Solution Overview
Problem
Conventional electric vehicle inlet apparatuses using tooth wheels for locking pins are prone to damage, leading to failure in controlling the attachment and detachment of charging connectors, which affects the reliability and durability of the charging system.
Innovation Solution
The use of magnetic substances and electromagnets replaces the tooth wheel mechanism, allowing for precise control of the locking pin's position and movement through repulsive and attractive forces, eliminating the need for a tooth wheel and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tooth wheel mechanism is used to control the locking pin, then the locking pin can be protruded or withdrawn, but the tooth wheel may become damaged leading to failure in controlling the outlet attachment and detachment
Solution Approach 1:
The patent replaces the mechanical tooth wheel mechanism with an electromagnetic system consisting of electromagnets and a magnetic substance attached to the locking pin. The electromagnets generate magnetic fields to attract or repel the magnetic substance, thereby controlling the locking pin's movement without mechanical contact, eliminating wear and damage risks associated with toothed gears.
Solution Approach 2:
The patent changes the control parameter from mechanical rotation of a tooth wheel to electromagnetic field strength control. By adjusting the current supplied to the electromagnets, the magnetic force can be varied to precisely control the locking pin's position, providing more reliable and damage-free operation.
2Measurement precision
If a tooth wheel with variable resistor is used to detect locking pin position, then the position can be sensed, but the complex mechanical structure increases the risk of damage
Solution Approach 1:
The patent replaces the mechanical variable resistor detection system with a magnetic field-based detection system. Sensors detect the position of the locking pin by sensing changes in magnetic field strength or position of the magnetic substance, eliminating the need for mechanical contact and complex electrical components within the moving parts.
Solution Approach 2:
The magnetic substance attached to the locking pin serves as an intermediary that carries both the actuation function (responding to electromagnet forces) and the detection function (being sensed by position sensors). This single component replaces both the mechanical linkage and the position sensing mechanism of the tooth wheel system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution increases the durability of the inlet apparatus and accurately detects the locking pin's position, ensuring reliable attachment and detachment of the charging connector, thereby improving the overall charging system's performance and reliability.
Implementation Method 1
a lower coil for generating a repulsive force or an attractive force in a vertical direction with respect to the locking pin
Implementation Method 2
a side coil for fixing the locking pin
Implementation Method 3
an outer coil, which is provided to surround the outside of the holder and which is configured to detect a change of a magnetic flux due to upward movement or downward movement of the locking pin
Data Source
AI summary
An inlet apparatus includes: a locking pin; a holder configured to accommodate the locking pin; and a first electromagnet provided at a lower portion of the holder. The first electromagnet includes a lower coil for generating a repulsive force or an attractive force in a vertical direction with respect to the locking pin. The inlet apparatus also includes a second electromagnet provided at a side of the holder, the second electromagnet including a side coil for fixing the locking pin. The inlet apparatus also includes a controller configured to control a current of the lower coil of the first electromagnet and a current of the side coil of the second electromagnet.