Bimodal Magnetic Alignment Component for Wireless Charging
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Solution Overview
Problem
Existing wireless charging systems face challenges in efficiently aligning transmitter and receiver coils due to the lack of guiding features on portable electronic devices, leading to time-consuming and unstable alignment, and the need for separate magnetic alignment components for bimodal devices that can attach to either primary or secondary alignment components.
Innovation Solution
A bimodal magnetic alignment component that can reorient its magnetic orientation between a first attachment position complementary to a primary annular alignment component and a second attachment position complementary to a secondary annular alignment component, allowing a device to interchangeably attach to either type without requiring additional inductive coils or components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a portable electronic device includes a flat surface with no guiding features for wireless charging, then the device can have a simpler design, but finding and maintaining proper alignment between transmitter and receiver coils becomes difficult and time-consuming
Solution Approach 1:
Magnetic alignment components are pre-installed on the portable electronic device before use. These components generate magnetic fields that automatically guide the alignment between transmitter and receiver coils when the device is placed on the charging surface, eliminating the need for user trial-and-error positioning and reducing alignment time.
Solution Approach 2:
The patent replaces mechanical alignment features (such as physical guides or protrusions) with magnetic fields for alignment. The magnetic alignment components create invisible magnetic field lines that guide the receiver coil into proper alignment with the transmitter coil, substituting mechanical guiding structures with a field-based system that maintains design simplicity while enabling automatic alignment.
2Reliability
If a portable electronic device includes magnetic alignment components to maintain alignment, then alignment stability improves, but the device size and weight increase
Solution Approach 1:
Instead of distributing magnetic alignment components throughout the entire device, the patent concentrates them in specific localized areas around the wireless charging coil. This localized placement provides sufficient magnetic field strength for alignment and stability while minimizing the total amount of magnetic material required, thereby reducing overall device weight.
Solution Approach 2:
The magnetic alignment components are integrated with the device housing or charging surface using composite construction methods. By combining magnetic materials with structural housing materials in a unified component, the patent achieves both alignment functionality and structural integrity without adding separate heavy components, thus improving alignment stability while controlling weight increase.
3Adaptability or versatility
If a device includes both primary and secondary magnetic alignment components to attach to either type of device, then adaptability improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The magnetic alignment component incorporates magnets that can dynamically reorient their magnetic polarity based on the type of device being attached. When a primary alignment component is detected, the magnets orient to attract to it; when a secondary alignment component is detected, the magnets reorient to attract to that instead. This dynamic reorientation capability allows a single component design to work with both device types without requiring physically separate components for each type.
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 stable alignment of inductive coils for wireless power transfer by allowing a single device to attach to either primary or secondary alignment components, reducing size, weight, and manufacturing costs, while maintaining alignment even when devices are jostled.
Implementation Method 1
A bimodal magnetic alignment component that can reorient its magnetic orientation between a first attachment position complementary to a primary annular alignment component and a second attachment position complementary to a secondary annular alignment component
Implementation Method 2
When brought into proximity with each other, the primary and secondary alignment components can generate a mutually attractive magnetic force that can draw the alignment components (and the devices in which the alignment components are installed) into the desired alignment and/or resist dislodgement from the desired alignment
Implementation Method 3
A transmitter coil disposed below the charging surface is driven with an alternating current that produces a time-varying magnetic flux that induces a current in a corresponding receiver coil in the portable electronic device
Data Source
AI summary
A bimodal annular magnetic alignment component can be included in an electronic device that attaches to other electronic devices using a magnetic alignment system that includes a primary annular alignment component and a secondary annular alignment component having complementary (and fixed) magnetic orientations. In a bimodal alignment component, a set of alignment magnets can be reoriented or shifted between a first position in which a magnetic orientation of the bimodal alignment component is complementary to a primary annular alignment component and a second position in which a magnetic orientation of the bimodal alignment component is complementary to a secondary annular alignment component. A bimodal electronic device incorporating a bimodal alignment component can be interchangeably attached to another device via either a primary annular alignment component or a secondary annular alignment component.