Wireless Power Mode Switching for Excessive Supply Prevention
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Solution Overview
Problem
Existing electronic devices face challenges in selecting the appropriate power source when multiple power sources, such as AC adapters and chargers, are available, leading to potential excessive power supply issues.
Innovation Solution
An electronic apparatus with a power receiving unit, connection unit, and detection unit that wirelessly receives power and switches modes based on power levels to prioritize power sources, ensuring efficient charging and operation while preventing excessive power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the electronic apparatus receives power from both AC adapter and charger simultaneously, then the power supply capacity is improved, but excessive power supply occurs causing safety issues
Solution Approach 1:
The detection unit continuously monitors the power level from the wireless charger and provides feedback to the control unit. When the detected power exceeds the predetermined threshold, the control unit switches from the first mode (prioritizing wireless power) to the second mode (prioritizing external apparatus power), thereby preventing excessive power supply while maintaining optimal power reception when conditions permit.
Solution Approach 2:
The electronic apparatus dynamically switches between two operational modes based on real-time power level detection. The mode switching mechanism allows the system to adapt its power source priority dynamically - using wireless power when available and safe, and transitioning to external apparatus power when wireless power exceeds safe thresholds, thus resolving the contradiction between maximizing power supply capacity and preventing excessive power.
2Reliability
If the electronic apparatus automatically switches power sources based on power levels, then power supply safety is improved, but the device complexity increases
Solution Approach 1:
The control system is segmented into distinct functional units: a detection unit for monitoring power levels and a control unit for mode switching. This segmentation allows each unit to perform its specific function independently with simple logic, reducing overall system complexity while maintaining reliable automatic power source switching based on predetermined power thresholds.
3Ease of operation
If the electronic apparatus uses wireless power reception, then the ease of operation is improved, but the stability of power supply decreases when power levels fluctuate
Solution Approach 1:
The detection unit continuously monitors wireless power levels and provides feedback to the control unit, which switches modes when power exceeds predetermined thresholds. This feedback mechanism maintains ease of wireless operation while stabilizing power supply by automatically transitioning to alternative power sources when wireless power becomes unstable or excessive.
Solution Approach 2:
The system dynamically adjusts its power source configuration based on real-time conditions, switching between wireless and external apparatus power sources as needed. This dynamic adaptation preserves the convenience of wireless power reception while ensuring stable power supply by leveraging external apparatus power when wireless power fluctuates or exceeds safe levels.
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
Effectively manages power sources to prevent excessive power delivery, ensuring safe and efficient charging and operation by dynamically switching between power sources based on available power levels.
Implementation Method 1
a power receiving unit that receives power from a power transmitting apparatus wirelessly
Data Source
AI summary
An electronic apparatus includes a power receiving unit that receives power from a power transmitting apparatus wirelessly, a connection unit that connects an external apparatus, a detection unit that detects power received by the power receiving unit, and a control unit that changes a mode of the electronic apparatus to a first mode after the detection unit detects that power received by the power receiving unit is equal to or lower than a predetermined value if the electronic apparatus is in a second mode.