Dual-Coil Wireless Charging Control for Automatic Scheme Switching
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Solution Overview
Problem
Existing electronic devices face inefficiencies in wireless charging due to the need to switch between magnetic induction and magnetic resonance schemes, requiring manual adjustment of device position for optimal charging efficiency.
Innovation Solution
A power transmitting unit (PTU) with coils for induction and resonance wireless charging, along with a processor and short-range wireless communication, dynamically selects and adjusts charging schemes based on environmental availability and device feedback to optimize charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic device uses magnetic induction scheme for wireless charging, then charging efficiency is improved, but the device requires precise positioning and manual adjustment
Solution Approach 1:
The system dynamically switches between magnetic induction and magnetic resonance charging schemes based on real-time detection of external devices. The processor monitors the presence and position of external electronic devices and automatically adjusts the charging mode, eliminating the need for manual positioning adjustments by users.
Solution Approach 2:
The system employs feedback mechanisms where the processor continuously detects the presence and position of external electronic devices through the coils, receives feedback signals, and uses this information to determine the optimal charging scheme. This closed-loop control enables automatic adaptation to different positioning scenarios.
2Adaptability or versatility
If the electronic device supports both magnetic induction and magnetic resonance schemes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The electronic device incorporates both first and second coils that can operate in different magnetic charging schemes. The processor is configured to control both induction and resonance charging modes, enabling a single device to serve multiple charging purposes and accommodate different external devices with varying charging requirements.
Solution Approach 2:
The wireless charging system is segmented into distinct functional components: first coil for magnetic induction, second coil for magnetic resonance, and a processor that manages switching between them. This segmentation allows each component to be optimized for its specific function while the overall system maintains versatility through coordinated operation.
3Ease of operation
If the device automatically switches between charging schemes, then ease of operation is improved, but processing requirements and energy consumption increase
Solution Approach 1:
The system performs preliminary detection of external electronic devices before initiating full charging operations. The processor uses the coils to detect device presence and characteristics in advance, determining the appropriate charging scheme beforehand. This preliminary action reduces unnecessary processing and energy consumption during the actual charging phase.
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
Enhances charging efficiency by automatically switching between charging schemes and guiding user movement for optimal positioning, thereby improving overall charging performance.
Implementation Method 1
The magnetic induction scheme is a wireless charging scheme of wirelessly transmitting power through an induced current that is generated using a magnetic field generated between a coil included in an electronic device and a coil included in a wireless charger.
Implementation Method 2
The magnetic resonance scheme is a wireless charging scheme of wirelessly transmitting power using a magnetic resonance phenomenon that is generated between a coil included in an electronic device and a coil included in a wireless charger.
Data Source
AI summary
A power transmitting unit (PTU) configured to support resonance wireless charging and induction wireless charging may include: a first coil for induction wireless charging, a second coil for resonance wireless charging, a wireless charging circuit electrically connected to the first coil and the second coil, a short-range wireless communication circuit, and at least one processor operatively connected to the wireless charging circuit and the short-range wireless communication circuit. The at least one processor may be configured to control the PTU to transmit a first signal for detecting at least one external electronic device through at least one of the first coil and the second coil, and receive, through the second coil, a feedback of the transmitted first signal from a first external electronic device among the at least one external electronic device, and in response to receiving the feedback, control the wireless charging circuit and transmit a first power for charging the first external electronic device in a resonance scheme, and identify whether a first region corresponding to the first coil and being at least partially flat is available, and based on the first region being available, determine whether to change a charging scheme of the first external electronic device from the resonance scheme to an induction scheme, and in response to determining to change the charging scheme of the first external electronic device into the induction scheme, transmit a control signal for charging using the induction scheme to the first external electronic device through the short-range wireless communication circuit.