RFID Power Socket for Electric Vehicle Charging Rate Differentiation
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Solution Overview
Problem
Existing electric vehicle charging systems using in-cable control boxes (ICCBs) face challenges such as high installation costs, progressive taxation due to indistinguishable charging of electric vehicles from general devices, and inefficient charging time, as they utilize general domestic power sockets without dedicated electricity rates.
Innovation Solution
A system that employs an RFID power socket and an electrical connecting device with a control unit to differentiate electric vehicle charging from general device charging, collecting and transmitting energy usage and location data to apply dedicated electricity rates, thereby reducing costs and preventing progressive taxation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an ICCB is connected to a general power socket to charge an electric vehicle, then the vehicle can be charged at any location without separate installation costs, but it is impossible to distinguish between charging the vehicle and charging general electric devices, resulting in progressive taxation and increased costs
Solution Approach 1:
The patent introduces an RFID recognition device as an intermediary between the power socket and the charging device. This intermediary component reads RFID tags to identify whether the connected device is an electric vehicle, enabling differentiated electricity pricing without requiring separate installation infrastructure. The RFID system acts as a mediator that provides vehicle identification capability while using existing power sockets.
2Reliability
If an EVSE is installed to charge an electric vehicle, then dedicated electricity rates can be applied and charging efficiency is improved, but high installation costs are incurred and the type of place for charging is limited
Solution Approach 1:
The patent makes the general power socket universal by equipping it with an RFID recognition device that can identify electric vehicles. This allows the existing power socket to serve dual purposes: charging general devices and charging electric vehicles with dedicated rates. The power socket becomes a multi-functional device that can recognize and differentiate between different types of connected devices, eliminating the need for separate EVSE installation.
3Ease of manufacture
If a general power socket is used to charge an electric vehicle via an ICCB, then installation costs are reduced, but charging time increases according to the power socket rating
Solution Approach 1:
The patent changes the identification parameter from physical infrastructure type to RFID tag recognition. By using RFID technology, the system can identify electric vehicles and apply appropriate charging parameters without being constrained by the physical rating of the power socket. This parameter change enables the system to optimize charging time through intelligent recognition while maintaining the cost advantage of using existing power sockets.
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
The system effectively reduces installation costs and prevents progressive taxation by applying dedicated electricity rates to electric vehicles, allowing charging at any location without separate power supply work, while optimizing charging efficiency.
Implementation Method 1
an RFID recognition device, which is used to distinguish whether or not connection is made to charge the vehicle by reading the RFID card when the electrical connecting device is connected to the RFID power socket
Data Source
AI summary
A system for charging an electric vehicle uses an in-cable control box (ICCB), and includes: an electrical connecting device for slow charging which supplies a vehicle with electricity, which is supplied through an RFID power socket when the electrical connecting device is connected to the RFID power socket, so as to charge the vehicle, in which the electrical connecting device collects information about electric energy used to charge the vehicle and information about a position where the vehicle is charged, in order to charge for electricity according to an electricity rate applicable to the vehicle.