Resonant Module Array for Multi-Receiver Wireless Energy Transfer
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Solution Overview
Problem
Existing wireless energy transfer systems by electromagnetic coupling face challenges in efficiently supplying energy to multiple receivers simultaneously, with known solutions either being complex or lacking optimized energy transfer efficiency.
Innovation Solution
A device with a single alternating signal generator and a series of resonant modules, each comprising a capacitor and an inductor, interconnected by a two-wire link, allowing for optimized energy transfer to multiple receivers while maintaining a simple design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna is used to supply energy to multiple receivers, then the design is simple, but optimized energy transfer between the transmitter and each receiver cannot be achieved
Solution Approach 1:
The transmitting device is divided into multiple independent antenna circuits (first antenna circuit, second antenna circuit, etc.), each capable of being independently activated. This segmentation allows each antenna to be optimized for specific receiver positions while maintaining overall system simplicity.
Solution Approach 2:
The system dynamically activates or deactivates specific antenna circuits based on the presence and position of receivers. Control circuits monitor receiver positions and selectively enable only the necessary antenna circuits, optimizing energy transfer efficiency while adapting to changing conditions.
2Loss of energy
If multiple transmitting antennas are used with control and switching circuits to activate/deactivate certain antennas, then optimized energy transfer between the transmitting device and each receiver is achieved, but the transmitting device becomes relatively complex
Solution Approach 1:
The system is segmented into multiple antenna circuits with dedicated control circuits for each, allowing independent optimization of each antenna-receiver pair while maintaining modular architecture that manages complexity.
Solution Approach 2:
Multiple antenna circuits share common control and switching infrastructure, allowing the system to serve multiple receivers simultaneously or individually. The control circuits can manage different antenna configurations based on receiver needs, providing universal functionality across multiple scenarios.
3Loss of energy
If the transmitting and receiving circuits are dimensioned for optimum energy transfer at a nominal distance, then energy transfer is optimized at that distance, but the relationship between distance and voltage level is not monotonic and may not accommodate varying receiver positions
Solution Approach 1:
Multiple antenna circuits are dimensioned for different nominal distances, creating segmented coverage zones. Each antenna circuit is optimized for a specific distance range, allowing the system to maintain optimal energy transfer efficiency across varying receiver positions by selecting the appropriate antenna circuit.
Solution Approach 2:
The system changes operational parameters by switching between different antenna circuits with different dimensional characteristics. Each antenna circuit has specific parameters (number of turns, dimensions) optimized for particular distance ranges, allowing adaptation to varying receiver positions through parameter selection rather than continuous adjustment.
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 solution enables efficient and simultaneous energy transfer to multiple receivers, maintaining optimal coupling and energy transfer efficiency regardless of the number of receivers, with a focus on simplicity and adaptability.
Implementation Method 1
System of energy transfer by electromagnetic coupling
Implementation Method 2
a succession of resonant modules each comprising a first capacitor and a first inductor
Data Source
Figure 1~2
Figure 3A~4
Figure 5
AI summary
The invention relates to a device (1) for emitting energy by electromagnetic coupling which comprises: a single generator (5) outputting an AC electric signal between two terminals; a series of resonant modules (2i) each including a first capacitor and a first inductance, and first to fourth terminals (Ai, Bi, Ci, Di), the first (Ai) and second (Bi) terminals of a first module being connected to the terminals of the generator, and the first (Ai) and second (Bi) terminals of the other module or modules being connected to the third (Ci) and fourth (Di) terminals of the module of the previous row.