Wireless Power Receiving Unit Electromagnet Alignment
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Solution Overview
Problem
Wireless charging systems face inefficiencies due to misalignment between power receiving and transmission units, leading to interrupted or reduced power supply.
Innovation Solution
Incorporating an electromagnet in the power receiving unit that becomes magnetized based on received electric power, allowing it to be attracted to a magnetically attractive material in the power transmission unit, thereby maintaining alignment and enhancing transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transmission is implemented without alignment suppression mechanisms, then ease of operation is improved, but power transmission efficiency deteriorates due to misalignment
Solution Approach 1:
The patent replaces mechanical alignment adjustment mechanisms with a magnetic field-based attraction system. The electromagnet generates a magnetic field that automatically attracts and aligns the power receiving unit with the power transmission unit, eliminating the need for manual mechanical positioning while maintaining high transmission efficiency.
Solution Approach 2:
The patent changes the operational state of the power receiving unit by introducing an electromagnet that can be activated or deactivated. When activated, the electromagnet creates magnetic attraction to suppress misalignment; when deactivated, the device can be freely placed. This parameter change (magnetic field activation) allows the system to transition between ease of operation and efficient power transmission as needed.
2Loss of energy
If an electromagnet is added to the power receiving unit, then power transmission efficiency is improved through alignment suppression, but device complexity increases
Solution Approach 1:
The electromagnet in the power receiving unit serves multiple functions: it suppresses misalignment during power transmission, provides automatic positioning, and can potentially serve as a mounting mechanism. This multi-functionality justifies the added complexity by eliminating the need for separate alignment and positioning mechanisms.
Solution Approach 2:
The electromagnet enables the power receiving unit to automatically align itself with the power transmission unit through magnetic attraction, without requiring external adjustment mechanisms or user intervention. This self-alignment capability reduces overall system complexity by eliminating manual positioning requirements.
3Reliability
If magnetic attraction is used to suppress misalignment, then power transmission stability is improved, but manufacturing complexity increases due to additional components
Solution Approach 1:
The patent merges the alignment function with the power receiving unit structure by integrating the electromagnet into the existing device housing or mounting mechanism. This consolidation approach maintains manufacturing simplicity while achieving stable power transmission through magnetic attraction.
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 configuration ensures stable and efficient power transmission by minimizing misalignment and optimizing the electric power transfer efficiency during the charging process.
Implementation Method 1
an electromagnet configured to be magnetized based on the electric power received from the power transmission unit
Implementation Method 2
a fixing section including a material to be attracted to a magnet
Data Source
AI summary
A power receiving unit includes: a power receiving section configured to receive electric power from a power transmission unit; and an electromagnet configured to be magnetized based on the electric power received from the power transmission unit.