Asymmetrical Wireless Charging Coil for Directional Magnetic Field Control
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Solution Overview
Problem
Conventional coils used in wireless energy transfer are not directional, leading to reduced effectiveness in energy transfer efficiency and increased electromagnetic interference with computing platform circuitry.
Innovation Solution
The use of asymmetrical coils with conductive patterns and magnetically conductive cores, which direct the magnetic field towards the receiving device, reducing interference and allowing for greater distance between transmitting and receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional symmetrical coils are used for wireless energy transfer, then the coil structure is simple and easy to manufacture, but the energy transfer effectiveness is reduced and electromagnetic interference with circuitry increases
Solution Approach 1:
The patent applies asymmetry by designing the coil structure with an opening oriented in a specific direction, creating an asymmetric geometry that directs the magnetic field toward the receiving device. This asymmetric coil configuration improves energy transfer effectiveness and reduces electromagnetic interference with circuitry while maintaining manufacturability through standard PCB fabrication processes
2Volume of moving object
If conventional coils are used, then the device structure is compact, but the distance between transmitting and receiving devices must be small
Solution Approach 1:
The asymmetric coil design with a strategically oriented opening concentrates and directs the magnetic field in a specific direction, extending the effective wireless energy transfer distance while maintaining a compact device form factor. The directional field distribution allows for greater separation between transmitting and receiving devices without sacrificing transfer efficiency
3Area of stationary object
If conventional coils generate magnetic fields in all directions, then the field coverage is comprehensive, but electromagnetic interference with computing platform circuitry increases
Solution Approach 1:
The asymmetric coil structure with its oriented opening directs the magnetic field primarily toward the receiving device rather than radiating uniformly in all directions. This directional field concentration reduces electromagnetic interference with surrounding circuitry while maintaining adequate field coverage for effective energy transfer
Solution Approach 2:
The patent applies local quality by concentrating the magnetic field in specific directional regions where it is needed (toward the receiving device) while minimizing field strength in regions where it causes interference (near circuitry). The asymmetric geometry creates localized field intensity variations that optimize both transfer efficiency and interference reduction
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 approach enhances energy transfer efficiency by allowing devices to be placed further apart while minimizing electromagnetic interference, reducing space constraints, and improving integration into computing platforms.
Implementation Method 1
When an electrical current flows through the transmitting coil, a magnetic field is generated. In turn, this magnetic field may induce an electrical current in the receiving coil.
Implementation Method 2
The transmitting coil may be shaped in away as to direct a magnetic field toward a receiving device. Similarly, the receiving device may be shaped in a way that is directed towards the device having the transmitting coil.
Data Source
AI summary
Techniques are disclosed involving coils. For example, energy may be transferred between transmitting and receiving coils. The transmitting coil may be in a first device, while the receiving coil may be in a second device. In embodiments, the transmitting coil may be shaped in a way as to direct a magnetic field toward a receiving device. Similarly, the receiving device may be shaped in a way that is directed towards the device having the transmitting coil.