Segmented Power Supply Coil Matrix for Wireless Charging Misalignment
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Solution Overview
Problem
Conventional non-contact power supply systems experience a decrease in electric power transmission due to positional misalignment between the power supply coil and the power receiving coil, which can lead to authentication failures and inefficient energy transfer.
Innovation Solution
A non-contact power supply system that selects power supply coils with interactions stronger or weaker than a reference interaction, and adjacent coils, to supply high-frequency voltage, ensuring consistent power delivery even with misalignment, using a coil control section to manage the power supply coils and detect magnetic interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power supply coil is used to reduce device complexity, then the structure is simpler, but positional misalignment causes significant power loss and authentication failure
Solution Approach 1:
The power supply device is segmented into multiple power supply coils arranged in a matrix pattern instead of using a single coil. This segmentation allows the system to divide the power supply function across multiple coils, enabling selective activation of coils based on the position of the power receiving device, thereby reducing power loss from misalignment while maintaining manageable system complexity through modular architecture
2Reliability
If multiple power supply coils are arranged in a matrix pattern to compensate for misalignment, then power supply reliability improves, but the device complexity increases
Solution Approach 1:
The system implements dynamic coil selection based on real-time detection of the power receiving device's position. The coil control section dynamically determines which power supply coil(s) to activate from the matrix arrangement, adapting the power supply configuration to match the receiver's position. This dynamic approach maintains high power supply reliability across different positions while managing complexity through intelligent control rather than static hardware configuration
Solution Approach 2:
The system uses feedback from the power receiving device (through authentication signals and position detection) to control which power supply coils are activated. The coil control section receives information about the receiver's position and authentication status, then selectively activates appropriate coils. This feedback mechanism ensures reliable power supply by continuously adapting the active coil configuration to the current operational state
3Productivity
If power supply coils are selectively activated based on position detection, then power supply efficiency improves, but the control complexity increases
Solution Approach 1:
The system performs preliminary detection of the power receiving device's position and authentication status before activating power supply coils. The coil control section determines the appropriate coil configuration in advance based on detected parameters, ensuring that power is supplied efficiently from the start. This preliminary action approach improves power supply efficiency by avoiding trial-and-error coil activation while managing control complexity through a systematic decision-making process
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 reduces power loss and ensures reliable power transmission to the power receiving device by utilizing multiple power supply coils to compensate for misalignment, enhancing the efficiency and reliability of the non-contact power supply.
Implementation Method 1
supplying electric power from a power supply coil of a non-contact power supply device to a power receiving coil of a power supply receiving device by utilizing an electromagnetic induction phenomenon
Implementation Method 2
detecting, as interaction information corresponding respectively to the power supply coils, intensities of magnetic interactions between the power receiving coil and the power supply coils
Data Source
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AI summary
With a non-contact power supply system, a non-contact power supply device, and power supply target device of the present invention, power is supplied from a power supply coil of the non-contact power supply device to a power receiving coil of the power supply target device by non-contact power supply utilizing magnetic interaction. During the non-contact power supply, first, a power supply coil exhibiting a first interaction stronger than a predetermined reference interaction is selected as a candidate excitation coil, and a high-frequency voltage is supplied to the power supply coil of the candidate excitation coil. Second, a power supply coil exhibiting a second interaction weaker than the reference interaction and power supply coils adjacent to this power supply coil are selected as candidate excitation coils, and the high-frequency voltage is supplied to the power supply coils of these candidate excitation coils.