Wireless Charging Touch Pad With Haptic Coil Alignment Feedback
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Solution Overview
Problem
Users find it difficult to recognize alignment information between wireless charging coils in existing systems, as alignment determination is based solely on power data, lacking intuitive feedback.
Innovation Solution
An electronic device with a housing, wireless charging coil, piezoelectric elements around the coil, and a touch panel, where a processor obtains pressure data from an external device to determine alignment and provides haptic feedback through the piezoelectric elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If alignment determination is based on power data from the wireless charging coil, then alignment status can be determined, but users cannot intuitively recognize alignment information
Solution Approach 1:
The patent introduces haptic feedback through piezoelectric elements that provide tactile notifications to users about alignment status. When the external device is properly aligned with the wireless charging coil, the system generates specific haptic patterns (e.g., vibration or resistance changes) that intuitively communicate alignment information without requiring users to interpret power data or display information.
Solution Approach 2:
The patent replaces visual or informational feedback mechanisms with mechanical haptic feedback. Instead of relying on users to read or interpret alignment information from displays or power data, the system uses piezoelectric elements to convert electrical signals into mechanical vibrations or resistance changes that users can feel, providing more intuitive feedback.
2Ease of operation
If piezoelectric elements are added around the wireless charging coil, then haptic feedback for alignment is provided, but device complexity increases
Solution Approach 1:
The piezoelectric elements serve multiple functions: they provide haptic feedback for alignment indication and can also function as part of the touch panel structure. This multi-functionality reduces the need for separate components and helps mitigate the increase in device complexity.
Solution Approach 2:
The patent merges the haptic feedback mechanism with the existing wireless charging structure by placing piezoelectric elements around the wireless charging coil in the same housing. This integration approach consolidates components and reduces overall system complexity compared to adding a completely separate haptic feedback subsystem.
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
The solution allows for intuitive alignment notification via haptic feedback, enhancing user experience by clearly indicating alignment or mis-alignment of the wireless charging coils.
Implementation Method 1
a plurality of piezoelectric elements disposed around the wireless charging coil
Implementation Method 2
The electronic device may charge its battery using electromagnetic induction or electromagnetic resonance generating between a wireless power transmitting unit (PTU) and a wireless power receiving unit (PRU)
Data Source
AI summary
An electronic device supporting a wireless charging function is provided. The electronic device includes a housing, a wireless charging coil disposed in the housing, a plurality of piezoelectric elements disposed around the wireless charging coil, a touch panel apart from the wireless charging coil in one direction, and at least one processor electrically connected with the wireless charging coil, the plurality of the piezoelectric elements, and the touch panel, wherein the at least one processor may be configured to obtain pressure data of an external device placed on the touch panel using the plurality of the piezoelectric elements, determine alignment of the external device and the wireless charging coil based on the pressure data, and output an alignment notification according to a result of determining the alignment.