Power Receiving Device Control for Wireless Charging Removal
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Solution Overview
Problem
Existing power transmission systems fail to effectively manage power supply after a power receiving device is removed from a power transmitting device, leading to wasteful power consumption during the removal period.
Innovation Solution
A control device within the power receiving device that includes a power supply portion and a control portion, which operates in two modes: turning on or off the power supply based on detection of the device's removal, ensuring power is only supplied when necessary and conserving energy during removal periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply operation is continuously maintained after removal detection, then the power supply target can be immediately powered, but wasteful power consumption occurs during the removal period
Solution Approach 1:
The power supply operation mode is made dynamic by introducing two selectable modes (first mode and second mode) that allow the system to adapt its behavior based on operational requirements. The control portion switches between continuous power supply (first mode) and power-off upon removal (second mode), enabling the system to optimize between reliability and energy efficiency depending on the specific application context.
Solution Approach 2:
The system changes the operational parameter of the power supply portion by providing two distinct operation modes. In the first mode, the power supply remains active after removal detection, while in the second mode, it is turned off. This parameter change allows the system to balance between maintaining power supply reliability and reducing energy waste during removal periods.
2Loss of energy
If the power supply operation is turned off after removal detection, then energy is conserved, but the power supply target loses power supply
Solution Approach 1:
The system provides dynamic control over the power supply operation through two selectable modes. The second mode enables energy conservation by turning off the power supply after removal detection, while the first mode maintains power supply continuity. This dynamic switching capability allows the system to adapt to different operational requirements.
Solution Approach 2:
The operational state of the power supply portion is changed by introducing two distinct modes. The control portion can set the power supply to either remain active (first mode) or turn off (second mode) after removal detection, thereby changing the power consumption parameter while providing flexibility in power supply reliability.
3Device complexity
If a single operation mode is used for power supply control, then the system is simple, but it cannot adapt to different power supply requirements
Solution Approach 1:
The control portion is designed with multi-functionality by incorporating two distinct operation modes within a single device. This universal design allows the same power supply system to serve different purposes: continuous operation for reliability-critical applications and power-off operation for energy-efficient applications, without requiring separate systems.
Solution Approach 2:
The system achieves adaptability through dynamic mode selection, where the control portion can switch between first mode and second mode based on operational requirements. This dynamic capability provides versatility in power supply control while maintaining relatively simple system architecture, as both modes are integrated into the same control structure.
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 appropriate power supply control, reducing wasteful power consumption by turning off the power supply when the device is removed, thus optimizing energy usage in both charging and removal periods.
Implementation Method 1
The contactless power transmission system uses electromagnetic induction or the like, and enables power transmission even without a contact with a metal portion.
Data Source
AI summary
In the case where it is detected that a power receiving device has been removed from a power transmitting device, a control device turns on a power supply operation of a power supply portion when an operation mode is set to a first mode, and turns off the power supply operation of the power supply portion when the operation mode is set to a second mode.