Non-contact Charging System Pairing via Power Signal Patterns
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Solution Overview
Problem
Existing non-contact charging systems face challenges in accurately pairing power transmitter coils with vehicles when multiple vehicles are charged simultaneously, due to limitations in the electric properties of the coils used for communication and signal transmission.
Innovation Solution
A non-contact charging system that includes a power supply control section capable of setting specific patterns of electric power for each power transmitter, allowing for the detection and pairing of vehicles based on unique patterns received from the power receivers, eliminating the need for separate communication equipment and simplifying the structure and alignment process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple power transmitter coils are provided to charge multiple cars simultaneously, then charging capacity is improved, but the ability to accurately pair each power transmitter with its corresponding vehicle deteriorates
Solution Approach 1:
The patent divides the charging system into multiple independent charging devices, each with its own power transmitter coil and charge control device. Each charging device operates independently with unique identification, allowing multiple vehicles to be charged simultaneously while maintaining accurate pairing through individualized control and identification mechanisms.
Solution Approach 2:
The charge control device transmits signals to the charging devices and receives feedback signals in return. This feedback mechanism enables the system to detect which vehicle is positioned at which charging device and establish accurate pairing relationships, even when multiple vehicles are present simultaneously.
2Device complexity
If the power transmitter coil and power receiver coil are used to transmit signals for pairing, then device complexity is reduced, but communication reliability deteriorates due to coil electric property restrictions
Solution Approach 1:
The power transmitter coil and power receiver coil are designed to serve dual functions: transmitting electric power for charging and transmitting communication signals for pairing. This multi-functionality eliminates the need for separate communication equipment, reducing device complexity while maintaining reliable signal transmission through the electromagnetic coupling already established for power transfer.
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 enables efficient and reliable pairing of power transmitters with vehicles, allowing for stable and efficient charging by using distinct electric power patterns for alignment and pairing, reducing the time required for the pairing process and minimizing structural complexity.
Implementation Method 1
electric power is transmitted by mutual induction or resonance through electromagnetic connection from the power transmitter coil to the power receiver coil
Implementation Method 2
electric power is transmitted by mutual induction or resonance through electromagnetic connection from the power transmitter coil to the power receiver coil
Implementation Method 3
the power transmitter coil that is not originally designed for communication and the power receiver coil of the car are used to transmit and receive signals tor pairing
Data Source
AI summary
In response to a detection of a presence of a device to be charged, a power supply control section sets, to a specific pattern, a pattern of electric power to be transmitted from a power transmission unit. The device to be charged acquires the specific pattern from the received electric power. The power supply control section identifies a combination between the power transmission unit and the device to be charged based on correspondence between information about the specific pattern that has been set, and the received information about the specific pattern.