Wireless Power Transmission Pattern Switching for Multi-Receiver Efficiency
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Solution Overview
Problem
Existing wireless power transmission systems fail to optimize power distribution efficiently, as radio waves intended for specific receivers are spatially diffused and received by other receivers, lacking a method to account for this spatial diffusion.
Innovation Solution
A wireless power transmission device that calculates and switches between multiple power transmission patterns based on receiving power information and required electric energy from multiple receivers, optimizing transmission periods and parameters to ensure efficient energy delivery to each receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a power transmission pulse is distributed to a specific target power receiver, then the intended receiver can be powered, but the radio wave is spatially diffused and received by other power receivers, causing inefficient power distribution
Solution Approach 1:
The patent segments the power transmission process by dividing the coverage area into multiple zones, each served by a dedicated power transmission device. Each device transmits power only to receivers in its specific zone, preventing spatial diffusion to unintended receivers. This is achieved by controlling transmission parameters and positioning devices to create distinct transmission zones with overlapping but manageable coverage areas.
Solution Approach 2:
The patent implements dynamic control of transmission parameters including power levels, transmission patterns, and timing. The system continuously adjusts these parameters based on real-time receiver positions, battery states, and environmental conditions to optimize power distribution efficiency and prevent unintended reception by receivers outside the target zone.
2Productivity
If multiple power transmission patterns are used to optimize power delivery, then power distribution efficiency improves, but the calculation and coordination complexity increases
Solution Approach 1:
The patent employs multiple power transmission patterns simultaneously or sequentially, using more transmission modes than the minimum required. This allows the system to optimize power delivery by selecting the most efficient pattern for each receiver based on current conditions, while having backup patterns available. The system transmits power through multiple patterns to ensure reliable delivery even when some patterns are less efficient due to environmental factors.
Solution Approach 2:
The system implements continuous feedback mechanisms where receivers report their power reception status, battery levels, and position information back to the transmission devices. This feedback enables dynamic adjustment of transmission patterns and parameters to maintain optimal power delivery efficiency while coordinating multiple patterns effectively based on real-time system state.
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 allows for efficient and optimized power distribution to multiple receivers by calculating and adjusting transmission patterns, reducing unnecessary energy consumption and improving power delivery efficiency.
Implementation Method 1
a wireless power transmission device according to a second embodiment transmits power to a plurality of power receivers through a radio wave
Data Source
AI summary
A wireless power transmission device that transmits wireless power by a radio wave to a plurality of power receivers, has a power transmission condition calculator that calculates power transmission conditions including power transmission periods of two or more of a plurality of different power transmission patterns based on receiving power information and required electric energy information from the plurality of power receivers, and power transmission circuitry that transmits a radio wave while switching between the two or more power transmission patterns under the calculated power transmission conditions.