Wireless Charging Surface With Beam Shaping for Multi-Device Power
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Solution Overview
Problem
Existing wireless charging systems require precise alignment of the charger and receiver coils, limiting the ease of use and compatibility with devices of varying power and voltage requirements, and are not designed to charge multiple devices simultaneously on a shared surface.
Innovation Solution
The development of systems and methods that modulate the phase and amplitude of an electromagnetic field in one or multiple dimensions, allowing for beam shaping, beam forming, and inductive charging, enabling charging of multiple devices with different power and voltage requirements on a larger surface area without precise alignment, using techniques such as magnetic apertures and coupling to reduce electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If precise alignment of charger and receiver coils is required, then power transfer efficiency is improved, but ease of operation deteriorates
Solution Approach 1:
The charging surface is divided into multiple independent coil segments that can be independently controlled. The system segments the power transfer path into multiple parallel channels, each handling a portion of the total power load, thereby reducing the alignment sensitivity of individual coils while maintaining overall efficiency
Solution Approach 2:
Multiple coil segments are merged into a unified charging surface that operates as an integrated system. The controller combines the output of multiple coils to provide cumulative power transfer, creating a larger effective charging area that maintains efficiency across distributed contact points
2Adaptability or versatility
If a single charging surface is used for multiple devices, then device compatibility is improved, but electromagnetic interference increases
Solution Approach 1:
The charging surface is segmented into multiple independent coil regions that can be independently activated. Each coil segment operates as a separate electromagnetic field source, reducing the total interference any single device experiences while allowing multiple devices to be charged simultaneously across different segments
Solution Approach 2:
Different regions of the charging surface are assigned different operational characteristics. The system adjusts the power level, frequency, or activation state of individual coil segments based on the specific devices present, creating locally optimized charging zones that minimize interference between simultaneously charged devices
3Productivity
If multiple devices are charged simultaneously, then productivity is improved, but power distribution complexity increases
Solution Approach 1:
The power distribution system is segmented into multiple independent control channels, each managing power delivery to a specific coil segment. This segmentation allows the controller to independently regulate power allocation to each device being charged, simplifying the overall power management architecture while supporting multiple simultaneous charging operations
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
This approach enhances the ease of use and compatibility of wireless charging by allowing multiple devices to be charged simultaneously on a shared surface without precise alignment, while minimizing electromagnetic interference and maintaining high power transfer efficiency.
Implementation Method 1
systems and methods that modulate the phase and amplitude of an electromagnetic field in one or multiple dimensions, allowing for beam shaping, beam forming, and inductive charging
Implementation Method 2
using techniques such as magnetic apertures and coupling to reduce electromagnetic interference
Data Source
AI summary
Systems and methods for modifying the magnitude and/or phase of an electromagnetic field in one or multiple dimensions. Applications for use in charging or powering multiple devices with a wireless power charger system are also described. Applications include beam shaping, beam forming, phase array radar, beam steering, etc. and inductive charging and power, and particularly usage in mobile, electronic, electric, lighting, or other devices, batteries, power tools, kitchen, industrial applications, vehicles, and other usages. Embodiments of the invention can also be applied generally to power supplies and other power sources and chargers, including systems and methods for improved ease of use and compatibility and transfer of wireless power to mobile, electronic, electric, lighting, or other devices, batteries, power tools, kitchen, military, industrial applications and/or vehicles.