Multi-coil Wireless Power Apparatus with Tunable Resonant Tanks
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Solution Overview
Problem
Existing wireless charging systems face limitations in compatibility across different standards, as they typically require matching frequencies between transmitters and receivers, leading to inefficiencies and increased costs due to the need for multiple resonant tanks to support various standards.
Innovation Solution
A multi-coil wireless power apparatus with a control logic circuit that determines which coil is active and switches resonance and power delivery modes to enable tuning of non-active resonant tanks to the frequency of the active tank, optimizing magnetic flux and charging efficiency by using non-active tanks as additional resonators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple resonant tanks are used to support various wireless charging standards, then compatibility with different standards is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes a single resonant tank system perform multiple functions by enabling it to operate at different frequencies. The resonant tank can be tuned to match either the first frequency (for first standard charging) or the second frequency (for second standard charging), eliminating the need for separate resonant tanks for each standard while maintaining compatibility with multiple wireless charging standards
Solution Approach 2:
The patent introduces dynamic frequency tuning capability to the resonant tank system. By using variable capacitors or inductors, the resonant frequency of the tank can be dynamically adjusted during operation to match the required frequency for the active wireless charging standard, allowing the same hardware to adapt to different standards without physical reconfiguration
2Adaptability or versatility
If multiple resonant tanks are used to support various wireless charging standards, then compatibility with different standards is improved, but manufacturing cost increases
Solution Approach 1:
The patent makes a single resonant tank system perform multiple functions by enabling it to operate at different frequencies. The resonant tank can be tuned to match either the first frequency (for first standard charging) or the second frequency (for second standard charging), eliminating the need for separate resonant tanks for each standard while maintaining compatibility with multiple wireless charging standards
Solution Approach 2:
The patent merges the functionality of multiple resonant tanks into a single unified resonant tank system. By combining the frequency tuning capability with a single tank, the design reduces component count and manufacturing complexity while achieving multi-standard support, thereby lowering production costs
3Productivity
If frequency matching is required between transmitter and receiver, then charging efficiency is improved, but adaptability to different standards deteriorates
Solution Approach 1:
The patent introduces dynamic frequency tuning capability to the resonant tank system. By using variable capacitors or inductors, the resonant frequency of the tank can be dynamically adjusted during operation to match the required frequency for the active wireless charging standard, allowing the same hardware to adapt to different standards without physical reconfiguration
Solution Approach 2:
The patent implements a control logic circuit that monitors which wireless charging standard is active and automatically adjusts the resonant tank frequency to match the required frequency. This feedback mechanism ensures optimal frequency matching for charging efficiency while maintaining adaptability to different standards through automatic frequency selection
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 charging efficiency by utilizing non-active resonant tanks as additional resonators, improving magnetic reception characteristics and reducing the need for multiple resonant tanks, thus enhancing compatibility and reducing costs.
Implementation Method 1
A wireless charging system may, for example, comprise a pair of coils coupled to each other for transferring energy by means of electromagnetic induction
Implementation Method 2
a first resonant tank comprising a first inductive energy coil, a first frequency tuner, a resonance mode switch
Data Source
AI summary
The invention relates to a multi-coil wireless power apparatus (100) comprising a first wireless power circuit (121) connectable to a first resonant tank (101, 21), wherein the first resonant tank (101, 21) is arranged to transfer inductive energy at a first frequency, and a second wireless power circuit (122) connectable to a second resonant tank (102, 22), wherein the second resonant tank (102, 22) is arranged to transfer inductive energy at a second frequency. The first resonant tank (101,21) is tunable to the second frequency when the second inductive energy coil (106, 26, 32, 42, 52) is active. The invention further relates to an apparatus and a computer program product.