Multi-Coil Non-Contact Power Supply System with Automatic Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional non-contact power supply systems for mobile devices face usability issues due to strict positional requirements between the power transmitter and receiver, limiting flexibility and efficiency, and often necessitate the use of special magnetic materials.
Innovation Solution
A power supply system with a power transmission module and a power reception module that utilize multiple coils and switch circuits to optimize power transmission efficiency based on the positional relationship between the transmitter and receiver, allowing for flexible placement without the need for special materials, and includes a determination circuit to select the most efficient coil combination for power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single primary coil and single secondary coil are used with positioning projections and recesses, then power transmission efficiency is improved, but the spatial constraint and usability are worsened
Solution Approach 1:
The patent divides the single coil system into multiple coils: the primary coil is segmented into first and second coils, and the secondary coil is segmented into first and second coils. This segmentation allows the system to maintain high power transmission efficiency by providing multiple potential coupling paths while eliminating the need for strict positional alignment, as the system can automatically select or combine multiple coil pairs for power transfer.
2Loss of energy
If a magnetic material box is used to house the power receiver, then power transmission efficiency is improved, but the device complexity and manufacturing cost are worsened
Solution Approach 1:
The patent extracts and eliminates the requirement for magnetic material boxes from the system. Instead of using a magnetic material enclosure to guide or contain the magnetic field, the invention achieves efficient power transmission through the strategic arrangement and control of multiple coils, thereby simplifying the device structure and removing the need for special magnetic materials.
Solution Approach 2:
The patent makes the power transmission system universal by eliminating dependence on magnetic material boxes. The multi-coil configuration allows the system to function effectively without requiring specialized magnetic enclosures, making the device applicable to a broader range of scenarios and reducing manufacturing complexity.
3Manufacturing precision
If the coil bobbin is formed integrally with the power receiver body, then manufacturing precision is improved, but the spatial constraint and usability are worsened
Solution Approach 1:
The patent segments the coil system into multiple independent coils with switches, allowing flexible configuration without requiring integral construction. The first and second primary coils and first and second secondary coils can be independently controlled, enabling the system to achieve both manufacturing precision and usability by selecting optimal coil combinations based on spatial arrangement.
4Loss of energy
If positioning projections and recesses are used to align coils, then power transmission efficiency is improved, but the device complexity and ease of manufacture are worsened
Solution Approach 1:
The patent extracts and removes the positioning projection and recess mechanism from the system. Instead of relying on mechanical alignment features, the invention achieves efficient power transmission through the configuration and control of multiple coils, which can be manufactured independently without requiring complex positioning structures.
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
Enables efficient non-contact power supply with high usability by automatically selecting the optimal coil combination for power transfer, regardless of the device's shape or positional alignment, reducing manufacturing costs and enhancing user convenience.
Implementation Method 1
non-contact power supply system using magnetic coupling... power is transmitted by magnetic coupling
Data Source
AI summary
A power supply system capable of supplying power from a power transmitter to a power receiver in an electrically non-contact manner, in which a power transmission module is attached to the power transmitter and a power reception module is attached to the power receiver. The power transmission module has a plurality of transmission-side coils for transmitting power and a plurality of transmission-side switches for turning on/off operation of the transmission-side coils. The power reception module has a plurality of reception-side coils for receiving power, a plurality of reception-side switches for turning on/off operation of the reception-side coils and, further, has a determination circuit for performing control so as to operate any of the transmission-side coils and any of the reception-side coils in a combination realizing highest power transmission efficiency.