Wireless Power Repeater for Uniform Magnetic Field Distribution
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Solution Overview
Problem
Wireless charging systems face challenges in providing a uniform charging space optimized for diverse devices such as laptops, tablets, phones, and wearable devices, as the magnetic field distribution is not effectively uniform across various shapes and sizes.
Innovation Solution
A wireless power repeater is introduced, configured with an Rx coil and a Tx coil, along with a phase shifting component, to redistribute the magnetic field and enable efficient power transmission to multiple devices, including those integrated within the repeater itself, maintaining compliance with wireless charging standards like A4WP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a basic wireless charging system with a single PTU and PRU is used, then the system structure is simple, but the charging space cannot be uniformly optimized for diverse devices of various shapes and sizes
Solution Approach 1:
The patent divides the wireless charging system into multiple segments by introducing power repeaters between the PTU and PRU. Each repeater contains its own Rx coil and Tx coil, creating modular units that can be strategically positioned to cover different areas and device types, thereby achieving uniform charging optimization across diverse devices without requiring a completely complex redesign of the entire system
Solution Approach 2:
The power repeater acts as an intermediary component between the PTU and PRU. It receives power wirelessly from the PTU via its Rx coil and retransmits it to devices via its Tx coil. This intermediary structure enables extended charging coverage and uniform magnetic field distribution across multiple device types and positions while maintaining overall system simplicity
2Productivity
If the magnetic field distribution is concentrated in one area, then the PTU can efficiently charge devices in that specific area, but devices of various shapes and sizes cannot all receive uniform power transmission
Solution Approach 1:
The patent extends the charging coverage from a single-point or single-area focus to a multi-dimensional charging space by deploying multiple power repeaters at different positions and orientations. This creates a distributed magnetic field network that covers various device shapes and sizes simultaneously, maintaining efficiency while adapting to diverse form factors
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 wireless power repeater ensures uniform and extended charging coverage for various devices by generating a magnetic field that can be received by different shapes, allowing for simultaneous charging of multiple devices while maintaining standard compliance.
Implementation Method 1
Magnetic resonance wireless charging may employ a magnetic coupling between the Tx coil and the Rx coil
Implementation Method 2
a second wireless power transmitting coil coupled to the first wireless power receiving coil, wherein the second wireless power transmitting coil is configured to propagate current resulting in a magnetic field
Data Source
AI summary
Techniques for wireless charging in a system, method, and apparatus are described herein. For example, the apparatus includes a first wireless power receiving coil configured to receive power from a first wireless power transmitting coil of a wireless charger. The apparatus also includes a second wireless power transmitting coil coupled to the first wireless power receiving coil, wherein the second wireless power transmitting coil is configured to propagate current resulting in a magnetic field.