Wireless Power Receiver Coils for Compact Device Charging
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Solution Overview
Problem
Portable electronic devices face limitations in wireless charging due to the need for precise alignment and compatibility with specific wireless charging devices, which restricts their charging efficiency and flexibility, especially in compact designs where space is a concern.
Innovation Solution
A wireless power receiver system for portable electronic devices that includes multiple receiver coils configured to operate at different frequencies and alignment constraints, allowing them to charge from various wireless charging devices, including broad charging surfaces, while fitting within a compact enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single receiver coil is used for wireless charging, then the device structure is simple, but the device can only charge from one type of wireless charging device and requires precise alignment
Solution Approach 1:
The receiver system is divided into multiple receiver coils, each configured to work with different types of wireless charging devices. This segmentation allows the device to charge from various wireless charging devices with different frequencies and alignment requirements, resolving the contradiction between adaptability and structural simplicity.
2Adaptability or versatility
If multiple receiver coils are added to support different charging frequencies, then compatibility with various wireless charging devices is improved, but the space required for internal components increases
Solution Approach 1:
The patent implements a nested configuration where one receiver coil is positioned within or adjacent to another receiver coil. This nesting approach allows multiple receiver coils to share the same spatial envelope, enabling the device to support multiple charging frequencies while minimizing the overall volume occupied by the receiver system.
3Ease of operation
If the device is designed to be compact for portability, then ease of mobility is improved, but space constraints make it difficult to accommodate multiple receiver coils
Solution Approach 1:
By nesting receiver coils within each other or arranging them in a compact overlapping configuration, the patent enables compact portable devices to accommodate multiple receiver coils. This maintains the device's portability while providing adaptability to charge from various wireless charging devices with different frequencies and alignment constraints.
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 efficient and flexible wireless charging from multiple devices, increasing the ease of charging and balancing the size requirements of internal components in compact devices like smart watches, without the need for physical connectors.
Implementation Method 1
A transmitter coil disposed below the charging surface may produce a time-varying magnetic field that induces a current in a corresponding receiver coil in the portable electronic device.
Data Source
AI summary
Embodiments disclosed herein describe a wireless power receiving system for an electronic device includes: a first inductor coil configured to receive power primarily at a first frequency and from magnetic fields propagating in a first direction; and a second inductor coil configured to receive power primarily at a second frequency and from magnetic fields propagating in a second direction, wherein the first frequency is different than the second frequency.