Wireless Power Supply Control to Block NFC Device Mischarging
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Solution Overview
Problem
Existing non-contact power supply systems risk transmitting power to communication devices instead of intended power reception apparatuses, leading to unnecessary energy consumption when communication and power supply are performed simultaneously.
Innovation Solution
A power supply apparatus equipped with Near Field Communication (NFC) polling processing to detect and differentiate between power reception and communication apparatuses, preventing power supply to communication devices by controlling the power supply state based on detected apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power supply and communication are performed simultaneously by superimposing communication information on a power supply carrier, then communication efficiency is improved, but power may be transmitted to communication apparatuses that are not target power reception apparatuses, causing energy waste
Solution Approach 1:
The patent performs preliminary detection of communication apparatuses before initiating power supply. The base station detects whether a communication apparatus is present in the coverage area before starting simultaneous power and communication operations, thereby preventing unnecessary power transmission to non-target devices while maintaining communication efficiency
2Speed
If power supply is performed without detecting communication apparatuses first, then power supply speed is improved, but power may be transmitted to unintended communication apparatuses
Solution Approach 1:
The system performs a quick detection phase before power supply to identify the presence of communication apparatuses. This preliminary action ensures that power is only supplied when a valid power reception apparatus is detected, maintaining both fast power supply and high accuracy by preventing transmission to unintended devices
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
Prevents unnecessary power transmission to communication devices, ensuring that power is only supplied to the intended power reception apparatuses, optimizing energy usage and reducing wastage.
Implementation Method 1
non-contact power supply systems in which power is transmitted/received in a non-contact manner using an electromagnetic induction method
Implementation Method 2
communication means that is capable of performing a plurality of polling processing with a plurality of communication methods in Near Field Communication (NFC)
Data Source
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AI summary
A power supply apparatus (10) that can supply power to a power reception apparatus (30) in a non-contact manner, comprises communication means that is capable of communicating with a power reception apparatus (30) and control means for controlling power supply to a power reception apparatus (30). The control means causes a first search processing for detecting a power reception apparatus (30) based on at least one communication method from among a plurality of communication methods, and a second search processing for detecting a communication apparatus (40) other than the power reception apparatus based on a plurality of communication methods to be performed. If a communication apparatus (40) is not detected in the second search processing, power is supplied to the power reception apparatus (30). If a communication apparatus (40) is detected in the second search processing, the control means performs control so as not to start power supply to the power reception apparatus (30).