Non-Contact Power Transmission Pairing Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In non-contact electric power feed systems, correctly pairing electric power transmission devices with vehicles is challenging due to overlapping communication coverage, leading to inappropriate power transmission to vehicles that are not the intended charging targets.
Innovation Solution
The system includes an electric power transmission device with a communication unit for radio communication, a control device that determines the correct vehicle for power transmission by varying the transmitted power and receiving corresponding information, and an electric power reception device with a communication unit to request power variations, ensuring accurate pairing through verification control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If radio communication is used for information transmission between electric power transmission devices and vehicles, then wireless convenience is achieved, but communication coverage overlap causes incorrect pairing between devices and vehicles
Solution Approach 1:
The system performs preliminary pairing verification by transmitting test electric power before actual charging. The control device checks whether the specified vehicle is the correct target by monitoring if the transmitted power is properly received and acknowledged, preventing incorrect pairing from occurring during actual charging operations
Solution Approach 2:
The system uses feedback control where the control device transmits electric power variations and monitors the vehicle's response. If the vehicle correctly receives and responds to the power variations, it confirms proper pairing. The system continuously monitors communication and power transmission status to verify and maintain correct pairing throughout the charging process
2Productivity
If electric power is transmitted to multiple vehicles simultaneously, then system productivity increases, but communication interference and pairing errors increase
Solution Approach 1:
The system segments the power transmission control by establishing individual verification channels for each vehicle. Each vehicle undergoes independent pairing verification through dedicated test power transmission sequences, allowing multiple vehicles to be charged simultaneously while maintaining accurate identification and pairing for each individual vehicle
Solution Approach 2:
The system performs an additional preliminary power transmission action (test power transmission) beyond the normal charging operation. This excessive verification step ensures correct pairing is confirmed before actual charging begins, allowing the system to handle multiple vehicles efficiently while maintaining high identification accuracy through the added verification layer
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 ensures correct pairing of electric power transmission devices and vehicles, preventing inefficient charging and ensuring accurate fee calculations by verifying the pairing during power transmission operations.
Implementation Method 1
an electric power transmission unit (220) that supplies electric power to an electric power reception device (110) in a non-contact manner
Data Source
AI summary
In a non-contact electric power feed system, electric power is supplied in a non-contact manner from an electric power transmission device to a vehicle representing an electric power reception device. The electric power transmission device includes an electric power transmission unit, a communication unit for radio communication with the electric power reception device, and a control device for controlling the electric power transmission unit. The control device varies transmitted electric power from the electric power transmission unit while the electric power transmission unit transmits electric power, and determines whether or not pairing between the vehicle specified as an electric power transmission target and the electric power transmission unit is appropriate, based on information on variation in electric power from the vehicle specified as the electric power transmission target through radio communication.