Wireless Charging Coil Alignment via Multi-Axis Rotation
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Solution Overview
Problem
Existing wireless charging systems require precise positioning of portable electronic devices relative to the charging coils, leading to reduced efficiency when devices are not oriented parallel to each other, and manual alignment is often necessary.
Innovation Solution
A wireless charging device with a positioning system that allows the transmission and receiving coils to be selectively rotated about multiple axes, enabling alignment in three-dimensional space to achieve parallel orientation and improve power transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the electronic device is precisely positioned in slots or on flat charging pads, then charging efficiency is improved, but device complexity and ease of operation deteriorate due to required manual positioning
Solution Approach 1:
The patent applies the dynamics principle by making the charging coil movable rather than fixed. The coil can dynamically adjust its position and orientation in three-dimensional space to track and align with the receiving coil in the portable device, eliminating the need for manual positioning while maintaining high charging efficiency throughout the movement range
Solution Approach 2:
The positioning system performs self-alignment by automatically detecting the position and orientation of the portable device and adjusting the charging coil accordingly. This self-service capability eliminates the need for user intervention in positioning the device, resolving the contradiction between maintaining efficiency and ease of operation
2Device complexity
If the charging coil is fixed in a static position, then device complexity is reduced, but charging efficiency deteriorates when the device orientation changes
Solution Approach 1:
The patent transforms the static charging coil into a dynamic system capable of movement and rotation. The coil can adjust its position and orientation in real-time to maintain optimal alignment with the receiving coil, ensuring high charging efficiency is maintained even when the portable device changes orientation or position within the charging area
Solution Approach 2:
The patent extends the charging coil's adjustment capability from two-dimensional planar movement to three-dimensional spatial positioning. By adding rotational degrees of freedom about multiple axes, the system can maintain parallel orientation between coils even when devices are positioned at various angles or heights, resolving the efficiency loss that occurs with orientation changes
3Loss of energy
If the coils are oriented parallel to each other, then charging efficiency is improved, but adaptability deteriorates when devices are positioned at various orientations
Solution Approach 1:
The dynamic positioning system allows the charging coil to adapt its orientation dynamically. Rather than requiring the device to be positioned in a specific orientation, the coil can rotate and adjust to maintain parallel alignment with the receiving coil regardless of the device's initial orientation, thereby maintaining high efficiency while accepting diverse device positions and orientations
Solution Approach 2:
The positioning system provides universal adaptability by enabling the charging coil to effectively charge devices regardless of their orientation or position within the charging area. The coil's ability to rotate about multiple axes and adjust its position makes the system versatile, accommodating various device orientations while maintaining optimal charging efficiency through automatic alignment
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
Facilitates efficient power transfer to portable electronic devices without the need for manual positioning, maintaining high efficiency even when devices are not aligned parallel to the charging device, and enables simultaneous charging of multiple devices.
Implementation Method 1
a transmission coil configured to be inductively coupled to the at least receiving coil
Data Source
AI summary
A wireless charging device for use in providing electrical power to one or more portable electronic devices is provided. The wireless charging device includes a transmission coil coupled to an electrical power source. The transmission coil selectively transmits power from the electrical power source to at least one receiving coil in a first portable electronic device of the one or more portable electronic devices. The wireless charging device also includes a positioning system coupled to the transmission coil. The positioning system is configured to selectively rotate said transmission coil about a first axis and about a second axis.