Power Source Selection for Wireless and Wired Charging
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Solution Overview
Problem
Conventional wireless charging systems for mobile devices can supply excessive power when both an AC adapter and a charging device are connected, leading to the need for the device to select between them, which is not efficiently managed.
Innovation Solution
An electronic apparatus with a connection unit for both wired and wireless power sources, a selection unit to choose the appropriate power source based on capacity, and a control unit for charging and power management, utilizing NFC for communication and power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If both AC adapter and charging device supply power simultaneously, then power availability is improved, but excessive power supply occurs causing safety issues
Solution Approach 1:
The patent introduces an intermediary control mechanism that detects the presence and power supply capacity of both power sources (AC adapter and charging device), then selectively activates only one power source based on detected conditions. This intermediary control prevents simultaneous power supply and avoids excessive power input to the battery.
2Object-affected harmful factors
If device must select between AC adapter or charging device, then excessive power supply is prevented, but power management complexity increases
Solution Approach 1:
The patent implements a self-service power management system where the electronic device automatically detects the connected power source type, determines its power supply capacity, and autonomously selects the appropriate power source without user intervention. The system self-regulates power input based on battery charge level and power source characteristics, reducing perceived complexity for the user.
Solution Approach 2:
The patent employs feedback mechanisms where the control unit continuously monitors battery charge level, power source presence, and power supply capacity. Based on this feedback information, the system dynamically adjusts power source selection and activation, creating a closed-loop control system that manages complexity internally while presenting simple operation to the user.
3Adaptability or versatility
If wireless charging is added to wired charging capability, then charging versatility is improved, but power selection management becomes more difficult
Solution Approach 1:
The patent creates a universal power management system that handles multiple charging modes (wired AC adapter charging and wireless charging) through a single integrated control mechanism. The control unit universally detects power source type, evaluates power supply capacity, and manages both charging methods through unified logic, allowing the device to adapt to different charging scenarios without requiring separate management systems for each charging type.
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
Ensures proper power selection and management, preventing excessive power supply by choosing the optimal power source, ensuring safe and efficient charging and operation of the device.
Implementation Method 1
a power receiving unit that receives power from a second power supply device wirelessly
Data Source
AI summary
An electronic apparatus includes a connection unit for connecting a first power supply device, a power receiving unit for receiving power from a second power supply device wirelessly. The electronic apparatus selects either the first power supply device or the second power supply device based on the power supply capacity of the first power supply device.