Wireless Power Coils with Magnetic Shielding to Reduce Leakage
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Solution Overview
Problem
Conventional contact charging methods for portable electronic devices are prone to contamination, moisture exposure, and energy dissipation, necessitating a non-contact wireless charging system to improve reliability and efficiency.
Innovation Solution
A wireless power communication system featuring a primary coil and a secondary coil with specific protruding portions and housings, where the primary coil generates a magnetic field inducing a current in the secondary coil, with a driving mechanism and sensor for precise alignment and power transfer, minimizing magnetic field leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact charging method is used, then charging connection is established, but contact terminal contamination and moisture exposure occur leading to deterioration
Solution Approach 1:
The patent replaces the mechanical contact charging system with a wireless electromagnetic induction system. The primary coil generates a magnetic field that induces current in the secondary coil, eliminating the need for physical contact terminals and thereby preventing contamination and moisture exposure while maintaining charging reliability
2Ease of operation
If contact terminal is protruded to the outside for charging, then charging connection is enabled, but the contact terminal is exposed to foreign substances and deteriorates
Solution Approach 1:
The patent eliminates protruding contact terminals by using wireless electromagnetic induction. The primary coil and secondary coil enable power transfer without mechanical contact, removing the vulnerability to foreign substance contamination while maintaining ease of operation through simple proximity-based charging
3Reliability
If wireless power transmission is implemented, then contactless charging is achieved, but magnetic field leakage occurs
Solution Approach 1:
The patent uses magnetic shielding materials that convert the harmful magnetic field leakage into beneficial contained magnetic flux. The shielding material redirects the magnetic field lines through a controlled path, containing the field within the charging apparatus while maintaining the wireless power transmission functionality
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 system effectively reduces magnetic field leakage and enhances the efficiency of wireless power transfer, improving the reliability and safety of charging portable electronic devices without physical contact.
Implementation Method 1
a primary coil, to which a current is applied; a secondary coil which outputs a current generated by a magnetic field, wherein the magnetic field is induced by the primary coil to the secondary coil
Data Source
AI summary
Provided are a wireless power communication system, including: a primary core where a primary coil, to which a current is applied, is wound; and a secondary core having a width wider than a width of the primary core, and receiving a secondary coil which outputs a current generated by a magnetic field, wherein the magnetic field is induced by the primary coil to the secondary coil, a wireless power transmission apparatus and a wireless power receiving apparatus therefor.