Wireless Charging Cross-Connection Detection via Dual Channel Verification
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Solution Overview
Problem
In environments with multiple wireless power transmission apparatuses, device recognition between wireless power transmission and receiving apparatuses can be incorrect, leading to failed or deteriorated wireless charging due to crossed connections.
Innovation Solution
A wireless power transmission apparatus and receiving apparatus system that uses a resonance circuit for magnetic coupling and a wireless communicator to establish a near-field communication channel, with a cross-controller determining correct connection by comparing first and second identification information, and controlling power transmission based on these identifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transmission is performed in an environment with multiple wireless power transmission apparatuses, then wireless charging capability is provided, but device recognition may be incorrect leading to cross-connected charging
Solution Approach 1:
The patent segments the identification process into two distinct channels: magnetic coupling channel for first identification information and near field communication channel for second identification information. This segmentation allows the system to differentiate between correct and incorrect connections by comparing identifiers from different channels, thereby resolving the cross-connection problem in multi-device environments.
Solution Approach 2:
The patent implements a feedback mechanism where the wireless power transmission apparatus receives both first identification information (via magnetic coupling) and second identification information (via near field communication), compares these two identifiers, and uses the comparison result to determine whether to proceed with power transmission. This feedback loop ensures reliable device recognition by validating consistency across multiple identification channels.
2Productivity
If only magnetic coupling is used for device recognition, then power transmission can be established, but cross-connected charging cannot be prevented
Solution Approach 1:
The patent introduces near field communication as an intermediary verification channel. Instead of relying solely on magnetic coupling for device recognition, the system uses near field communication to provide a second identification channel that acts as a mediator to verify the correctness of the magnetic coupling connection, thereby preventing cross-connected charging while maintaining power transmission efficiency.
Solution Approach 2:
The patent adds another dimension to device recognition by utilizing two distinct communication channels (magnetic coupling and near field communication) instead of relying on a single channel. This dimensional expansion allows the system to cross-validate identification information and accurately distinguish between correct and incorrect connections without compromising power transmission efficiency.
3Reliability
If dual channel identification is implemented, then cross-connection can be detected, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by having the wireless power transmission apparatus perform dual roles: it transmits power via magnetic coupling while simultaneously conducting identification verification through near field communication. This universal approach allows a single device to handle both power transmission and reliable identification without requiring separate dedicated verification hardware, thereby managing complexity while maintaining high cross-connection detection accuracy.
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 accurately determines cross-connections and ensures reliable wireless charging by differentiating between correct and incorrect connections, thereby improving charging accuracy and performance.
Implementation Method 1
a resonance circuit configured to be magnetically coupled to a wireless power receiving apparatus
Implementation Method 2
a wireless communicator configured to form a near field communications channel with the wireless power receiving apparatus
Data Source
AI summary
A wireless power transmission apparatus includes: a resonance circuit configured to be magnetically coupled to a wireless power receiving apparatus; a wireless communicator configured to form a near field communications channel with the wireless power receiving apparatus; and a cross controller configured to determine whether the wireless power receiving apparatus is cross-connected to the wireless power transmission apparatus based on first identification information received from the wireless power receiving apparatus through the resonance circuit and second identification information received from the wireless power receiving apparatus through the wireless communicator.