Wireless Charging Display Feedback for Mobile Terminal Positioning
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Solution Overview
Problem
Existing wireless charging technologies for mobile terminals suffer from inefficiencies due to varying placement positions and power consumption during data communication, leading to reduced charging efficiency and longer charging times.
Innovation Solution
A mobile terminal equipped with a power receiver, display unit, and wireless communication unit that adjusts its display and communication intensity based on received power levels, allowing optimal positioning and reduced power consumption, along with a power supply device that can levitate the terminal for improved heat dissipation and positioning adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mobile terminal is placed in a predetermined region in the charger for wireless charging, then charging capability is achieved, but charging efficiency decreases depending on placement position
Solution Approach 1:
The display controller provides visual feedback by displaying different information based on the received power magnitude. When the received power exceeds a predetermined value or is increasing, the display shows encouraging information to guide the user to maintain or achieve optimal placement, thereby improving charging efficiency without requiring precise manual positioning
Solution Approach 2:
The system automatically detects the placement position and adjusts the display information accordingly, eliminating the need for user intervention to optimize positioning. The mobile terminal self-adjusts by providing guidance information that leads the user to the optimal position, improving charging efficiency through automated feedback rather than manual optimization
2Productivity
If data communication is performed with the charger during charging, then data exchange is enabled, but charging efficiency decreases due to power consumption
Solution Approach 1:
The wireless communication unit performs communication at specific intervals rather than continuously during charging. By controlling communication to occur periodically or at predetermined timing, the system reduces overall power consumption while still enabling necessary data exchange, thereby improving charging efficiency
Solution Approach 2:
The system performs only the minimum necessary communication required for charging operation, rather than maintaining full communication functionality throughout the entire charging process. This partial action approach reduces power consumption sufficiently to improve charging efficiency while maintaining essential communication capabilities
3Temperature
If the mobile terminal is placed on the charger surface, then charging is achieved, but heat dissipation is insufficient
Solution Approach 1:
The system transitions from two-dimensional surface contact charging to three-dimensional levitated charging by introducing magnetic levitation. The mobile terminal is suspended above the charger surface using magnetic fields, creating spatial separation that enables superior heat dissipation from all surfaces of the terminal, thereby reducing temperature while maintaining or improving charging efficiency
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
Enhances charging efficiency by optimizing placement and reducing power consumption, thereby shortening charging times and improving heat management.
Implementation Method 1
a wireless power supply method utilizing an electromagnetic resonance phenomenon and an electromagnetic induction method utilizing an electromagnetic induction phenomenon
Implementation Method 2
a wireless power supply method utilizing an electromagnetic resonance phenomenon
Implementation Method 3
a first magnetic body that is located in the body, keeps the mobile terminal levitated at a predetermined position above the body
Implementation Method 4
having magnetic properties different from magnetic properties of a second magnetic body placed in the mobile terminal
Data Source
AI summary
A mobile terminal that operates on a secondary battery, the mobile terminal including: a power receiver that wirelessly receives electric power, and supplies the secondary battery with the electric power received; a display unit that provides a display indicating that the power receiver is receiving the electric power; and a display controller that causes the display unit to provide the display differently in accordance with magnitude of the electric power received by the power receiver.