Honeycomb Hexagonal Coil Layout for Focused Wireless Charging
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Solution Overview
Problem
Current wireless charging technologies are inefficient in focusing the magnetic field for effective power transfer, limiting the surface area coverage and number of coils that can be utilized on a wafer, which affects charging efficiency.
Innovation Solution
A hexagonal semiconductor package structure with a plurality of coils arranged in a honeycomb pattern on a wafer, allowing for a larger surface area coverage and increased number of coils, enabling more efficient wireless charging by focusing the magnetic field in a desired direction through controlled electrical currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional wireless charging coil arrangements are used, then the magnetic field can be generated for power transfer, but the surface area coverage is limited and the number of coils that can be utilized is restricted
Solution Approach 1:
The patent divides the wireless charging system into multiple discrete coil segments arranged in a honeycomb pattern. Each coil is a separate functional unit that can be independently controlled, allowing the system to cover larger surface areas while maintaining manageable complexity through modular organization. The segmentation enables efficient space utilization and facilitates directional control of magnetic fields through selective activation of different coil segments.
2Productivity
If more coils are arranged on the wafer to increase power transfer capability, then the charging efficiency improves, but the magnetic field focusing capability deteriorates
Solution Approach 1:
The patent implements local quality by assigning different operational states to different coil segments based on spatial requirements. The control circuit selectively activates specific coils in the honeycomb arrangement to create focused magnetic field regions where power transfer is needed, while keeping other coils inactive or operating at different power levels. This localized control maintains magnetic field focusing precision even as the total number of coils increases, thereby improving charging efficiency without sacrificing field concentration.
Solution Approach 2:
The system employs dynamic control of coil activation and power levels based on real-time charging requirements. The control circuit can adjust which coils are active and at what power levels, enabling the magnetic field focus to move and adapt to different charging positions. This dynamic adjustment allows the system to maintain precise magnetic field focusing while utilizing multiple coils for enhanced overall power transfer 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 configuration enhances wireless charging efficiency by allowing for better directional control of the magnetic field and increased coil density, leading to improved power transfer capabilities.
Implementation Method 1
Induction chargers use a first induction coil to create an alternating electromagnetic field from the transmitter and a second induction coil to receive the power from the electromagnetic field
Implementation Method 2
a second induction coil to receive the power from the electromagnetic field. The second induction coil converts the power back into electric current
Data Source
AI summary
Coil structures and methods of forming are provided. The coil structure includes a substrate. A plurality of coils is disposed over the substrate, each coil comprising a conductive element that forms a continuous spiral having a hexagonal shape in a plan view of the coil structure. The plurality of coils is arranged in a honeycomb pattern, and each conductive element is electrically connected to an external electrical circuit.