Wireless Charging Authentication via Voltage Pattern
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Solution Overview
Problem
Existing wireless charging systems face cross-connection issues where power is inadvertently transmitted to mobile terminals from adjacent charging apparatuses, reducing power transmission efficiency.
Innovation Solution
A wireless charging apparatus and method that includes a controller generating voltage pattern information from received voltage range data, a power converter producing authentication power with a predetermined voltage pattern, and a resonator transmitting this authentication power to mobile terminals to authenticate and ensure power is only supplied to authorized devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging apparatus determines charging range based on signal intensity, then mobile terminals can be charged wirelessly, but cross-connection occurs between adjacent charging apparatuses
Solution Approach 1:
The patent applies preliminary action by performing authentication before power transmission. The controller generates authentication power with a specific voltage pattern, transmits it to the mobile terminal, and verifies the terminal's response before enabling charging. This pre-authentication step ensures that only authorized terminals receive power, preventing cross-connection issues between adjacent wireless charging apparatuses.
2Reliability
If authentication power with voltage pattern is transmitted, then cross-connection is prevented, but additional authentication process is required
Solution Approach 1:
The patent applies parameter changes by modifying the voltage characteristics of the authentication power. The controller generates power with a specific voltage pattern (different from normal charging voltage) to encode authentication information. The mobile terminal detects this voltage pattern and responds accordingly. This parameter-based authentication method provides reliable cross-connection prevention while keeping the process integrated into the existing wireless charging protocol.
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 cross-connections by authenticating mobile terminals before power transmission, thereby maintaining high efficiency and ensuring power is only supplied to intended devices.
Implementation Method 1
a resonator transmitting the authentication power to the mobile terminal
Data Source
AI summary
Disclosed herein are a wireless charging apparatus and a wireless charging method capable of avoiding a cross connection. A wireless charging apparatus, including: a controller receiving voltage range information from a mobile terminal and generating voltage pattern information corresponding to the voltage range information; a power converter generating authentication power having a predetermined voltage pattern corresponding to the voltage pattern information; and a resonator transmitting the authentication power to the mobile terminal.