Wireless Charging Alignment Coils Using Induction Circuit
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Solution Overview
Problem
The efficiency of wireless charging is significantly reduced if the transmitting and receiving ends are not properly aligned, and existing methods using electromagnets are not practical for lightweight and thin electronic devices.
Innovation Solution
An electronic device with an induction circuit comprising two wires that generate induced voltages based on magnetic flux, a comparator to compare these voltages, and a processing circuit to determine alignment, ensuring optimal alignment between the receiving and transmitting antennas for improved charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromagnets are added to the transmitting end and receiving end to improve alignment, then alignment effect is improved, but device weight and thickness increase
Solution Approach 1:
The patent replaces the mechanical electromagnet alignment system with an electrical field-based alignment system. Instead of using electromagnets that generate mechanical attraction forces, the invention uses alignment detection circuits that generate electrical signals to detect and indicate alignment status, thereby achieving alignment without the weight and thickness of electromagnetic components.
Solution Approach 2:
The patent introduces an alignment detection circuit as an intermediary system between the transmitting and receiving ends. This circuit uses electrical field interaction to detect alignment status and provides feedback through indicators, serving as a mediator that enables alignment without requiring direct mechanical or electromagnetic attraction components in the devices themselves.
2Reliability
If electromagnets are added to the transmitting end and receiving end to improve alignment, then alignment effect is improved, but device thickness increases
Solution Approach 1:
The patent replaces the mechanical electromagnet alignment system with an electrical field-based alignment system. Instead of using electromagnets that generate mechanical attraction forces, the invention uses alignment detection circuits that generate electrical signals to detect and indicate alignment status, thereby achieving alignment without the weight and thickness of electromagnetic components.
3Productivity
If alignment detection is not implemented, then device complexity is reduced, but charging efficiency decreases
Solution Approach 1:
The alignment detection system is designed to be self-contained and self-indicating. The detection circuit automatically detects alignment status and provides visual feedback through indicators without requiring external intervention or complex processing systems, enabling the device to self-monitor and self-adjust for optimal charging efficiency.
Solution Approach 2:
The patent uses color-changing indicators (such as LEDs displaying different colors) to represent alignment status. This visual feedback mechanism provides intuitive alignment information to users through color changes, simplifying the user interface and reducing the complexity of alignment monitoring while improving charging efficiency through accurate alignment detection.
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
The solution effectively adjusts the alignment between the receiving and transmitting antennas, enhancing charging efficiency while being suitable for lightweight and thin devices by using a compact and lightweight induction circuit.
Implementation Method 1
the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively
Data Source
AI summary
One embodiment provides an electronic device including: a processor; a power supply module coupled to the processor; a receiving antenna coupled to the power supply module, wherein receiving antenna cooperates with a transmitting antenna of a wireless charger to charge the power supply module wirelessly; an inductor arranged with respect to the receiving antenna, wherein the inductor comprises a first wire and a second wire through which a first induced voltage and a second induced voltage are generated respectively; a comparator for comparing the first and second induced voltages; and wherein the processor determines if the receiving antenna is aligned with respect to the transmitting antenna of the wireless charger based upon the comparison of the first and second induced voltages. Other aspects are described and claimed.