Wireless Power Supply System with Position Indicator LEDs
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Solution Overview
Problem
Conventional wireless power supply systems require movement of the transmission-side coil to align with the reception-side coil, complicating the device structure and potentially causing operational noise.
Innovation Solution
A wireless power transmission device with a placement surface featuring position marks and a power supply indicator, allowing the wireless power reception device to be placed in an optimal position without moving the transmission-side coil, and providing visual feedback on power supply status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmission-side coil is made movable to align with the reception-side coil, then power transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces the mechanical movement system with an optical indication system. Instead of moving the transmission-side coil mechanically to achieve alignment, the invention uses position marks and power supply indicator lights to guide the user to place the reception device in the correct position, thereby eliminating the need for complex mechanical adjustment mechanisms while ensuring reliable power transmission.
Solution Approach 2:
The patent introduces position marks and indicator lights as intermediary elements between the transmission-side coil and the user. These visual indicators serve as mediators to communicate the optimal placement position to the user, eliminating the need for direct mechanical interaction or movement of the coil assembly.
2Productivity
If the transmission-side coil is made movable for alignment, then power transmission efficiency is improved, but operational noise increases
Solution Approach 1:
The patent eliminates the mechanical movement system that generates operational noise by replacing it with a static coil assembly配合visual indication system. The position marks and indicator lights provide the necessary guidance without requiring any moving parts, thus maintaining power transmission efficiency while eliminating noise generation.
3Ease of operation
If position marks are added to guide device placement, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent uses color changes of indicator lights to convey placement status information. Different colors or illumination states indicate whether the reception device is correctly positioned, providing intuitive visual feedback that simplifies operation without requiring complex mechanical or electronic systems.
Solution Approach 2:
The position marks and indicator lights provide self-service guidance to the user. The system automatically indicates the correct placement position and confirms proper positioning through visual feedback, eliminating the need for complex control mechanisms or user interpretation.
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
Simplifies the device structure, reduces operational noise, and ensures accurate alignment of the wireless power reception device for efficient power transmission.
Implementation Method 1
power is supplied from a wireless power transmission device to a wireless power reception device via electromagnetic induction between a transmission-side coil provided in the wireless power transmission device and a reception-side coil provided in the wireless power reception device
Implementation Method 2
a power supply indicator that displays the power supply status on the placement surface is provided
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
[Problem] To provide a system that allows a wireless power receiving device to be placed in the correct position with a simple configuration. [Solution] A wireless power transmission device (6) is equipped with a transmission-side coil (8). Position indicator LEDs (10a, 10b) are provided on the centerline of the transmission-side coil (8) and are constantly illuminated. LEDs 10a and 10b are positioned symmetrically on either side of the transmission-side coil (8). Power supply indicator LEDs (12a, 12b) are positioned outside LEDs 10a and 10b and are normally off. When the user places a smartphone (20), which is a wireless power receiving device, above the transmission-side coil (8), the wireless power transmission device (6) determines that it is in a state capable of supplying power and turns on LEDs 12a and 12b. This allows the user to confirm that power is being supplied.