Multi-Coil Wireless Power Supply with Device Detection
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Solution Overview
Problem
Conventional power-supplying devices using electromagnetic induction face inefficiencies when supplying power to multiple devices simultaneously with a single primary coil, as they struggle to control power distribution based on varying allowable voltage and current values for each device.
Innovation Solution
A power-supplying device with multiple primary coils, including detection and control mechanisms to identify and manage the presence of multiple power-supplied devices in each coil's magnetic field, allowing for precise control of power supply to ensure each device receives power within its allowable limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one primary coil supplies power to multiple power-supplied devices simultaneously, then the power supply coverage and versatility are improved, but the control precision and power distribution accuracy deteriorate due to inability to properly manage different allowable voltage and current values for each device
Solution Approach 1:
The patent divides a single primary coil into multiple independent primary coils (first primary coil, second primary coil, etc.). Each primary coil can independently detect and supply power to power-supplied devices, allowing precise control of power distribution according to each device's allowable voltage and current values while maintaining the ability to serve multiple devices simultaneously.
2Device complexity
If power is supplied based on conventional electromagnetic induction without device-specific detection, then the system simplicity is maintained, but the reliability and safety deteriorate due to excessive power supply and inefficiency
Solution Approach 1:
The patent incorporates detection means in each primary coil to detect whether a power-supplied device is set on the coil. This feedback mechanism allows the controlling means to adjust power supply based on actual device presence and requirements, preventing excessive power supply and ensuring safe, efficient operation while maintaining relatively simple system architecture.
3Manufacturing precision
If multiple primary coils are used to improve power distribution control, then the power supply precision and reliability are improved, but the device complexity increases
Solution Approach 1:
The patent designs multiple primary coils with identical structures and functions, where each coil can independently detect and supply power to devices. This universal design allows the system to achieve improved power distribution control through redundancy rather than complexity, as each coil performs the same function independently without requiring complex inter-coil coordination mechanisms.
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
Enables efficient and controlled power distribution to multiple devices with different voltage and current requirements, preventing over-supply and ensuring safe, effective charging without alerting the user to potential errors or incomplete charging.
Implementation Method 1
a power-supplying device that supplies power to a power-supplied device in a non-contact manner by using electromagnetic induction
Implementation Method 2
a power-supplying device that supplies power to a power-supplied device in a non-contact manner by using electromagnetic induction
Data Source
AI summary
Even when power is to be simultaneously supplied to a plurality of power-supplied devices by using one primary coil, it is possible to properly supply power to the respective power-supplied devices. More specifically, a power-supplying device stops non-contact power supply in accordance with the detection of a plurality of power-supplied devices set in a power supply area.