Wireless Power Supply Coil Selection for Fast Charging
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Solution Overview
Problem
Existing electric power supply systems for electronic devices, such as PDAs and digital portable telephones, take a long time to fully charge batteries using traditional wired methods, and there is a need for a faster charging solution.
Innovation Solution
An electric power supply system that includes a power supply apparatus with multiple electromagnetic induction coils, a selection mechanism to choose the appropriate coil based on the device's location, and a control mechanism to optimize power transfer using wireless communication for efficient charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional wired power supply method is used, then power can be supplied to battery, but charging time is long
Solution Approach 1:
The patent replaces the mechanical connection system (power supply cable and plug) with an electromagnetic field-based wireless power transmission system. The master system generates electromagnetic waves that are received by the portable device, enabling power transfer without physical contact and significantly reducing charging time.
Solution Approach 2:
The power supply coils in both the master system and portable device operate through periodic electromagnetic cycles. The master system sequentially activates multiple power supply coils, and the portable device's reception coil periodically receives electromagnetic energy, creating a continuous power transfer process that accelerates charging.
2Adaptability or versatility
If multiple power supply coils are used, then power supply coverage is improved, but system complexity increases
Solution Approach 1:
The patent divides the power supply system into multiple independent power supply coils arranged in different regions. Each coil can be independently controlled and selected based on the portable device's location, providing targeted power supply while maintaining manageable system complexity through modular design.
Solution Approach 2:
The system dynamically selects and activates specific power supply coils based on the real-time position of the portable device. The control system adjusts which coils are active, creating a dynamic adaptation that improves power supply coverage without requiring all coils to operate simultaneously, thus managing complexity.
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 enables quick charging of electronic devices by selecting the optimal power supply coils and controlling power transfer wirelessly, reducing charging time and preventing overheating or damage from foreign substances.
Implementation Method 1
supplying electric power by electromagnetically inducing a current in an electromagnetic induction coil of a portable device from an electromagnetic induction coil of a master system
Data Source
AI summary
An electric power supply system includes an electric power reception apparatus and an electric power supply apparatus adapted to supply electric power to the electric power reception apparatus when the electric power reception apparatus is placed on the electric power supply apparatus. The electric power supply apparatus includes a plurality of electric power supply units adapted to supply electric power by electromagnetic induction to the electric power reception apparatus. A selection unit of the electric power supply apparatus selects, from the total plurality of electric power supply units, a plurality of electric power supply units whose location corresponds to a position where the electric power reception apparatus is placed, and a control unit controls the supply of electric power such that electric power is supplied to the electric power reception apparatus from the selected plurality of electric power supply units.