Wireless Charging Coil Alignment via Movable Carrier and Detecting Coils
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional wired charging methods are inconvenient, and existing wireless charging technologies face efficiency issues due to misalignment between transmitting and receiving coils, leading to reduced charging efficiency and energy wastage.
Innovation Solution
A wireless charging device with a movable coil carrier and detecting coils arranged circumferentially around the transmitting coil, which generates inductive signals to determine alignment and adjust the position of the coils for optimal energy transfer, preventing eddy currents and ensuring efficient charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detecting coils are arranged between the transmitting coil and the receiving coil to detect alignment, then alignment detection capability is improved, but eddy currents are generated between the coils which affects energy transfer
Solution Approach 1:
The detecting coils are extracted from the space between the transmitting and receiving coils and relocated to the circumferential region around the transmitting coil. This extraction eliminates the harmful eddy currents while preserving the alignment detection function, as the detecting coils can still sense the receiving coil's position through inductive coupling from the transmitting coil's magnetic field.
Solution Approach 2:
The detecting coils are arranged in a circumferential dimension around the transmitting coil rather than in the radial space between coils. This dimensional repositioning allows the detecting coils to monitor alignment from multiple angular positions, providing comprehensive alignment detection without interfering with the primary energy transfer path between the transmitting and receiving coils.
2Measurement precision
If multiple detecting coils are added to improve alignment detection accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The alignment detection function is segmented into multiple detecting coils positioned at different circumferential locations around the transmitting coil. Each detecting coil monitors a specific angular sector, and by comparing the inductive signals from multiple segments, the system achieves comprehensive alignment detection with high precision while keeping each individual detecting coil simple in structure.
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 solution enhances charging efficiency by aligning the coils effectively, minimizing energy wastage and maintaining high efficiency even during high-power charging, achieving optimal alignment both initially and in real-time.
Implementation Method 1
a transmitting coil configured to convert the alternating current signal into electromagnetic waves to radiate to a receiving end
Implementation Method 2
a receiving end receives the electromagnetic wave and converts it into an electrical signal
Implementation Method 3
the detecting coils are configured to radiate energy to a receiving coil of the receiving end and generate an inductive signal
Data Source
AI summary
A wireless charging device includes: a power supply circuit configured to provide an alternating current signal; a transmitting coil configured to convert the alternating current signal into electromagnetic waves to radiate to the receiving end; the wireless charging device further includes: a plurality of detecting coils configured to radiate energy to a receiving coil of the receiving end and generate an inductive signal; a movable coil carrier, the transmitting coil and the plurality of detecting coils are disposed on the movable coil carrier; a driving mechanism connected to the movable coil carrier and configured to drive the movable coil carrier to move; the controller configured to acquire inductive signals of the plurality of detecting coils, and control the position of the movable coil carrier by controlling the driving mechanism.