Wireless Charging Coil Pairs for Orientation-Adaptive Power Transfer
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Solution Overview
Problem
Conventional wireless charging systems for portable electronic devices are limited to specific orientations, failing to accommodate various device placements, which restricts charging flexibility and efficiency.
Innovation Solution
A wireless charging apparatus with multiple electrically conductive coils and advanced electronic circuitry that can detect and adapt to different orientations of a portable electronic device, providing a magnetic field for efficient charging regardless of device position, using a plurality of coil pairs and coil control circuitry to induce a magnetic field for inductive charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single coil is used for wireless charging, then the device structure is simple, but the device can only charge in one specific orientation
Solution Approach 1:
The wireless charging system is divided into multiple independent coil units (first coil and second coil) arranged at different orientations. Each coil can independently provide charging function for specific device orientations, resolving the contradiction by segmenting the charging function across multiple oriented coils rather than using a single omnidirectional coil.
Solution Approach 2:
The wireless charging apparatus achieves multi-functionality by incorporating multiple coils that can serve different charging orientation requirements. The system can adaptively select which coil to activate based on the device's placement orientation, making the charging system universal across multiple usage scenarios.
2Ease of operation
If precise alignment between charging coil and device is required, then charging efficiency is high, but the ease of operation is reduced
Solution Approach 1:
The system dynamically adapts to the device's placement orientation by detecting which orientation the device is in and activating the corresponding coil. This dynamic adaptation eliminates the need for precise manual alignment while maintaining charging efficiency, as the system automatically configures itself based on the device's position.
Solution Approach 2:
The wireless charging apparatus incorporates detection circuitry that provides feedback about the device's orientation and presence. Based on this feedback, the control system selectively activates the appropriate coil, ensuring efficient charging without requiring the user to achieve precise alignment. The feedback mechanism enables the system to adapt to various placements automatically.
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 wireless charging of portable electronic devices in various orientations, increasing charging efficiency and flexibility, and prolonging device usage time without the need for precise alignment.
Implementation Method 1
A time-varying electrical current in an electrical conductor creates a time-varying magnetic field around the electrical conductor. The magnetic field is strongest near the electrical conductor, and decreases in strength with distance from the electrical conductor.
Implementation Method 2
That time-varying current generates a time-varying magnetic field around the coil of the power source.
Implementation Method 3
a time-varying magnetic field can induce a time-varying current in an electrical conductor. If an electrically conductive wire passes a permanent magnet, a current is induced in the wire.
Data Source
AI summary
A charging apparatus for charging a portable electronic device includes a receiving area, two coil pairs, and coil control circuitry. The receiving area is configured to removably receive the portable electronic device and/or a case for a portable electronic device. The two coil pairs are positioned around a perimeter of the receiving area of the charging apparatus. Each coil pair includes first and second electrically conductive coils. The second electrically conductive coil is opposite the first electrically conductive coil on the perimeter of the receiving area and the ends of each electrically conductive coil including electrical leads. The coil control circuitry is electrically connected to each electrically conductive coil. The coil control circuitry is configured to selectively provide a charging current to at least one of the coil pairs to induce a magnetic field around the electrically conductive coils for inductively charging the portable electronic device.