Dual-Function Receiver Coil for Wireless Power Heating
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Solution Overview
Problem
Current wireless charging systems primarily focus on power transmission and lack an efficient method for heating personal devices, such as shoes, without compromising the ease of use and interoperability provided by wireless charging standards.
Innovation Solution
A dual-function wireless power and thermal receiver system that uses a receiving coil integrated with a capacitor to form a resonant tank, where the receiving coil functions as both a power receiver and a heat-producing element, generating heat through ohmic resistance, and a microcontroller regulates temperature by adjusting the capacitance and power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless charging system uses a receiving coil for power transmission only, then interoperability and ease of use are maintained, but heating functionality is lost
Solution Approach 1:
The receiving coil is designed to perform multiple functions: wireless power reception and heating. By utilizing the ohmic resistance of the same coil that receives power wirelessly, the system generates heat without requiring separate heating elements, thereby adding heating functionality while maintaining interoperability with existing wireless charging standards
Solution Approach 2:
The patent combines the power reception function and heating function into a single component - the receiving coil. The coil serves dual purposes: receiving wireless power through electromagnetic induction and generating heat through its inherent resistance, thus merging two functions into one integrated system
2Productivity
If a separate heating element is added to provide heating functionality, then heating efficiency is improved, but device complexity increases
Solution Approach 1:
The receiving coil serves itself by utilizing its own ohmic resistance to generate heat from the wireless power it receives. This self-service approach eliminates the need for separate heating elements, as the coil that receives power inherently provides heating functionality through its resistance, reducing component count while maintaining heating efficiency
3Device complexity
If the receiving coil is used for both power reception and heating, then component count is reduced, but temperature control becomes more difficult
Solution Approach 1:
The system incorporates temperature sensing and control mechanisms that provide feedback to regulate the heating process. By monitoring the temperature and adjusting the power transmission accordingly, the system maintains precise temperature control despite the receiving coil serving dual functions, ensuring safety and comfort
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 solution allows for efficient heating of personal devices, maintaining comfort by regulating temperature and ensuring compatibility with existing wireless charging standards, enabling flexible positioning and efficient heat distribution.
Implementation Method 1
The magnetic field generated by transmitting coil LTX as a result of the flow of current ITX induces current IRX to flow through LC tank 108
Implementation Method 2
heating the personal device with heat produced by a resistance of the receiving coil
Implementation Method 3
the receiving coil is coupled to a capacitor of the wirelessly-powered heating device to form a receiver resonant tank
Data Source
AI summary
In an embodiment, a method for heating a personal device using a wirelessly-powered heating device includes: wirelessly receiving power with a receiving coil of the wirelessly-powered heating device, the receiving coil located inside the personal device, where the receiving coil is coupled to a capacitor of the wirelessly-powered heating device to form a receiver resonant tank; and heating the personal device with heat produced by a resistance of the receiving coil, where the receiving coil functions as a receiver antenna and as a heat producing element.