Resonant Substrate Layout for Versatile Wireless Power Coils
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Solution Overview
Problem
Existing non-contact power supply devices lack versatility in accommodating multiple types of power supply and receiving coils with different characteristics, requiring significant capacitance value adjustments and separate substrate designs, which limits their flexibility and efficiency.
Innovation Solution
The solution involves separating the power supply substrate, power receiving substrate, and resonant substrate to allow for multiple types of power supply and receiving elements with different characteristics, with the resonant substrate's element constant being adjusted to accommodate various coils, eliminating the need for new designs and simplifying production and inventory management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single substrate design is used for multiple types of coils with different characteristics, then device complexity is reduced, but manufacturing precision deteriorates because significant capacitance value adjustments are needed
Solution Approach 1:
The substrate is divided into a power supply substrate containing the AC power supply circuit and a resonant substrate containing the resonant capacitor. This segmentation allows the resonant capacitor to be independently adjusted for different coil characteristics without redesigning the entire substrate, thus maintaining manufacturing precision while reducing overall device complexity.
Solution Approach 2:
The resonant substrate is designed to be detachably connectable to the power supply substrate, enabling dynamic reconfiguration. This allows the resonant capacitor value to be changed by attaching different resonant substrates corresponding to different coil types, achieving precise capacitance matching without permanent redesign.
2Manufacturing precision
If separate substrate designs are created for each coil type, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The power supply substrate is designed with universal connectivity to accommodate multiple types of resonant substrates. This universal design allows a single power supply substrate to work with various resonant substrates corresponding to different coil characteristics, reducing the need for completely separate designs while maintaining precision.
Solution Approach 2:
The detachable connection between power supply substrate and resonant substrate enables dynamic adaptation. Instead of creating separate fixed designs for each coil type, the system dynamically configures the appropriate resonant substrate for each application, reducing overall device complexity while preserving manufacturing precision.
3Ease of manufacture
If resonant capacitors are fixed on substrates, then ease of manufacture is improved, but adaptability deteriorates because significant capacitance adjustments are needed for different coils
Solution Approach 1:
By separating the resonant capacitor onto its own detachable resonant substrate, the system maintains ease of manufacture through standardized assembly processes while gaining adaptability. Different resonant substrates with predetermined capacitance values can be manufactured separately and then attached to match different coil characteristics.
Solution Approach 2:
The system accommodates different coil types by changing the capacitance parameter through attachment of different resonant substrates. Each resonant substrate is designed with a specific capacitance value optimized for particular coil characteristics, allowing the system to adapt to various coil types without compromising manufacturing simplicity.
4Adaptability or versatility
If multiple types of resonant capacitors are used, then adaptability is improved, but loss of substance increases due to inventory requirements
Solution Approach 1:
The segmentation of resonant capacitors into separate, detachable resonant substrates allows for modular inventory management. Instead of maintaining large inventories of different capacitor values, the system can use a standardized power supply substrate with interchangeable resonant substrates, reducing overall inventory requirements and waste.
Solution Approach 2:
The detachable resonant substrate design enables easy replacement and recovery. When a resonant substrate is worn or needs reconfiguration, it can be detached and replaced with another from inventory, and the removed substrate can be recovered and reused or recycled, reducing loss of substance compared to fixed designs where entire substrates must be discarded.
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 configuration enables a versatile substrate setup that can handle multiple types of power supply and receiving elements by changing the resonant element constants, improving production control, quality, and inventory management, while maintaining high power supply efficiency.
Implementation Method 1
a power supply coil 31 and a power receiving coil 41, wherein the power receiving coil 41 is faced to the power supply coil 31
Implementation Method 2
even if the inductance of the coil varies, the resonant frequency of the resonance circuit can be kept constant by adjusting the capacitance value of the capacitors
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A non-contact power supply device (1) of the present invention includes a power supply element (31) provided in a power supply unit (1S), an AC power supply circuit (2) for supplying AC power to the power supply element, a power receiving element (41) provided in the power receiving unit (1R), a power receiving circuit (5) for outputting a received voltage, obtained by converting AC power received by the power receiving element, to an electric load (EL), a resonance element (35, 45) connected to at least one of the power supply element and the power receiving element to form a resonance circuit; a power supply substrate (61) configured to include the AC power supply circuit, a power receiving substrate (71) configured to include the power receiving circuit, and a resonant substrate (65, 75) configured to include the resonant element. In this configuration, the non-contact power supply device having a versatile substrate configuration can be provided for multiple types of power supply elements and power receiving elements having different characteristics.