Wireless Charging Coil Alignment Using Rotating Bottom Plate
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Solution Overview
Problem
Wireless charging efficiency is hindered by significant longitudinal offset between the center points of transmitting and receiving coils, leading to reduced charging efficiency due to coil design, especially when the electronic device is larger than the charging device.
Innovation Solution
A method and system for aligning the transmitting coil with the receiving coil in the longitudinal direction by obtaining coil adjustment information, including offset and rotation data, and sending control instructions to adjust the charging device's components to align the coils, utilizing motor-driven mechanisms for precise movement and rotation of the bottom plate to align the coil centers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic device is placed on the charging device for wireless charging, then the charging operation can be performed, but the longitudinal offset between the center points of the transmitting coil and receiving coil reduces charging efficiency
Solution Approach 1:
The patent applies the Dynamics principle by making the bottom plate rotatable to dynamically adjust the longitudinal position of the transmitting coil. The bottom plate can rotate relative to the electronic device, allowing the transmitting coil to move along the longitudinal direction and achieve alignment with the receiving coil, thereby resolving the static alignment issue and improving charging efficiency
Solution Approach 2:
The patent implements the Feedback principle through a control system that detects the offset between the transmitting coil and receiving coil centers, processes this information, and generates control signals to adjust the bottom plate rotation. This closed-loop feedback mechanism continuously monitors alignment status and makes real-time adjustments to maximize charging efficiency
2Productivity
If the transmitting coil is fixed on the charging device, then the structure is simple, but the coil cannot be adjusted to align with the receiving coil in the longitudinal direction
Solution Approach 1:
The patent transforms the fixed transmitting coil structure into a dynamic one by mounting it on a rotatable bottom plate. This allows the coil to adjust its longitudinal position through rotation while maintaining structural simplicity, achieving alignment without complex mechanical mechanisms
Solution Approach 2:
The bottom plate serves multiple functions: it supports the transmitting coil, provides rotation for longitudinal adjustment, and acts as a mounting platform. This multi-functionality reduces the need for additional adjustment mechanisms, maintaining structural simplicity while enabling alignment capability
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 alignment method improves charging efficiency by ensuring optimal alignment of the transmitting and receiving coils, enhancing the transfer of magnetic field energy and thus increasing the charging efficiency of the wireless charging system.
Implementation Method 1
A transmitting coil is arranged on the charging device, and a receiving coil is arranged on the electronic device. When an offset between a center point of the transmitting coil and a center point of the receiving coil is less than a specific value, the receiving coil can receive magnetic field energy sent by the transmitting coil
Data Source
AI summary
Embodiments of this application provide a coil alignment method and a charging system. The method includes: obtaining, by an electronic device, coil adjustment information after the electronic device establishes communication with a charging device, the coil adjustment information including: at least one of coil offset information or bottom plate rotation information, the coil offset information being offset information of a first transmitting coil relative to a first receiving coil, and the bottom plate rotation information being rotation information of a bottom plate on the charging device relative to the electronic device; and sending, by the electronic device, a control instruction to the charging device, the control instruction carrying the coil adjustment information, so that the charging device adjusts the transmitting coil on the charging device according to the control instruction, to align the transmitting coil with the receiving coil in a longitudinal direction, thereby improving the charging efficiency.