Wireless Power Coil Isolation With Sensor Feedback for Appliances
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Solution Overview
Problem
The use of electrical plugs and appliance cords for powering appliances is inconvenient, leading to clutter and inefficiencies, and existing wireless power solutions lack refined control and feedback for varying power requirements.
Innovation Solution
An apparatus and method utilizing a secondary coil within an appliance, a primary coil with isolation, and feedback sensors for controlling wireless power through infrared communication, allowing for precise power delivery and monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electrical plugs and cords are used to power appliances, then power delivery is reliable and controlled, but convenience deteriorates due to clutter and mobility restrictions
Solution Approach 1:
The patent extracts the power delivery function from the physical cord and plug infrastructure, separating the power transmission function from the mechanical connection. The primary coil in the base unit and secondary coil in the appliance enable wireless power transfer, eliminating the need for physical plugs and cords while maintaining reliable power delivery.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium for power transfer. The primary coil generates an oscillating magnetic field that couples with the secondary coil to transfer power wirelessly. This intermediary field-based approach replaces the direct mechanical electrical connection, solving the contradiction between reliability and convenience.
2Measurement precision
If wireless power is provided without feedback control, then simplicity is improved, but power delivery precision deteriorates
Solution Approach 1:
The patent implements a feedback control system where sensors detect the presence and power requirements of the appliance, and the system adjusts the power delivery accordingly. The base unit monitors the magnetic coupling between coils and modulates the primary coil excitation to maintain optimal power transfer, ensuring precise power delivery while managing system complexity through intelligent control.
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 power delivery with refined control and feedback, reducing clutter and enhancing appliance mobility and ease of use by eliminating the need for cords, while supporting a wide range of power requirements from trickle charging to 4.5 kW.
Implementation Method 1
a secondary coil within a housing physically associated with the appliance and suitable for providing induced operative current from a primary coil magnetically proximate to, and at least partially isolated from, the secondary coil
Implementation Method 2
at least one sensor, such as an infrared transmitter, communicatively coupled to the appliance controller and suitable to receive ones of the data indicators from the appliance controller and to transmit the ones of the data indicators wirelessly
Data Source
AI summary
An apparatus, system and method for wirelessly powering a device. The apparatus, system and method may include a primary coil housing that houses a primary coil; a secondary coil housed within the device and suitable for having power induced therein responsive to the primary coil; an isolator that at least partially mechanically and electrically isolates the primary coil from the secondary coil; and a plurality of paired feedback sensors respectively communicatively and physically associated with, and paired as between, the primary coil housing and the device, wherein the plurality of paired feedback sensors exchanges indications regarding performance of the secondary coil, and wherein performance of the primary coil is modified responsively to the indications.