Wireless Power Switching Unit Impedance Control
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Solution Overview
Problem
Existing wireless power supply systems face challenges in controlling the destination of power supplied to electronic devices, leading to excess power being delivered to communication units, which can disrupt normal communication functions and result in inefficient battery charging.
Innovation Solution
An electronic apparatus with a power control unit, communication unit, switching unit, and driving unit that switches between power paths to the power control unit and communication unit, utilizing a conversion element to manage impedance and ensure appropriate power distribution for communication and charging modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power is supplied to the communication unit for wireless communication, then communication function is enabled, but excess power may be supplied causing communication malfunction
Solution Approach 1:
The patent introduces a switching unit as an intermediary component between the power supply and the communication unit. This switching unit selectively connects or disconnects power supply paths, acting as a mediator that prevents excess power from reaching the communication unit while ensuring adequate power is provided when needed for normal communication operation.
2Reliability
If power is supplied to the battery for charging, then battery charging is enabled, but power for communication may become insufficient
Solution Approach 1:
The patent implements a dynamic power distribution system where the switching unit can dynamically alter power flow paths based on operational requirements. When battery charging is needed, the system dynamically switches to allocate power to the battery; when communication is needed, it dynamically redirects power to the communication unit, ensuring both functions receive adequate power at appropriate times.
3Device complexity
If one antenna is used for both communication and power reception, then device complexity is reduced, but power destination control becomes difficult
Solution Approach 1:
The patent applies segmentation by dividing the power distribution function into separate controllable paths despite using a single antenna. The switching unit segments the power flow into distinct pathways leading to different destinations (communication unit, battery, or both), allowing independent control of power allocation to each component while maintaining the simplified single-antenna configuration.
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 solution enables effective control of power distribution, preventing excess power from reaching communication units during communication and optimizing battery charging efficiency, while maintaining resonance circuit integrity and reducing power loss.
Implementation Method 1
an antenna that wirelessly receives power
Implementation Method 2
a conversion element that converts an impedance
Data Source
AI summary
An electronic apparatus includes an antenna that wirelessly receives power; a power control unit that accumulates or supplies power received by the antenna by inputting power; a communication unit that communicates with a power supply apparatus via the antenna; a switching unit that switches between a path from the antenna to the power control unit and a path from the antenna to the communication unit; and a driving unit that operates with power received by the antenna and drive the switching unit, wherein an input impedance of the driving unit viewed from the antenna is higher than an input impedance of the power control unit viewed from the antenna or an input impedance of the communication unit viewed from the antenna.