Wireless Charging Relay Coil for Multi-Standard Power Transfer
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Solution Overview
Problem
Current wireless charging standards lack unification, resulting in incompatible devices and increased costs for consumers and manufacturers due to different transmission frequencies and alignment requirements, limiting the ability of products to support multiple standards.
Innovation Solution
An inductive resonant wireless charging system that includes a resonant wireless charging transmitting device for high-frequency radio frequency waves, a wireless charging relay device with a resonant receiving coil and inductive transmitting coil for electromagnetic resonance and induction, and an inductive wireless charging receiving device for low-frequency radio frequency waves, enabling simultaneous support of multiple standards like Qi and A4WP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If electromagnetic induction is used for wireless charging (Qi standard), then charging efficiency is improved, but transmission distance is limited to short range (about 5mm)
Solution Approach 1:
The patent divides the wireless charging system into two separate transmitting devices: one using electromagnetic induction for short-distance high-efficiency charging, and another using electromagnetic resonance for long-distance charging. This segmentation allows each device to optimize for its specific range while maintaining overall system effectiveness.
2Length of moving object
If electromagnetic resonance is used for long-distance wireless charging (A4WP standard), then transmission distance is improved, but charging speed and efficiency deteriorate
Solution Approach 1:
The patent segments the wireless charging market into two distinct standards supported by separate transmitting devices: electromagnetic induction for high-speed short-distance charging and electromagnetic resonance for long-distance charging. This allows consumers to choose the appropriate device based on their specific needs.
3Productivity
If different wireless charging standards with different transmission frequencies are used, then specific charging performance is improved, but device compatibility and versatility worsen
Solution Approach 1:
The patent creates two separate transmitting devices, each capable of operating under different wireless charging standards (electromagnetic induction and electromagnetic resonance). This multi-functionality approach allows consumers to own one device for each standard, ensuring compatibility with various receivers while maintaining optimal performance for each charging scenario.
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
The system allows for long-distance energy transmission conforming to A4WP standards and short-distance energy transmission conforming to Qi standards, enhancing user convenience and reducing manufacturing costs by enabling wireless charging across different standards without alignment restrictions.
Implementation Method 1
the resonant receiving coil receives the high-frequency radio frequency wave in a manner of electromagnetic resonance
Implementation Method 2
the inductive transmitting coil transmits a low-frequency radio frequency wave
Implementation Method 3
an inductive wireless charging receiving device for receiving the low-frequency radio frequency wave in a manner of electromagnetic induction
Data Source
AI summary
An inductive resonant wireless charging system includes a resonant wireless charging transmitting device, a wireless charging relay device and an inductive wireless charging receiving device. The resonant wireless charging transmitting device transmits a high-frequency radio frequency wave. The wireless charging relay device receives the high-frequency radio frequency wave using an electromagnetic resonance way, and converts the high-frequency radio frequency wave into a low-frequency radio frequency wave to transmit the low-frequency radio frequency wave. The inductive wireless charging receiving device receives the low-frequency radio frequency wave in a manner of electromagnetic induction.