Variable Diameter Wireless Charging Coil for Irregular Housing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable electronic devices with irregularly shaped housings face challenges in efficiently utilizing available space due to protrusions and recesses, leading to underutilization of internal space for conventional components like wireless charging coils.
Innovation Solution
Designing wireless charging coils with varying wire diameters and lengths, allowing loops to be arranged in multiple configurations to conform to the device housing's irregular geometry, thereby maximizing space utilization and reducing impedance for efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional uniform diameter coils are used in device housings with irregular geometries, then manufacturing and assembly are simplified, but space utilization within the housing is inefficient
Solution Approach 1:
The patent applies local quality by varying the wire diameter along the length of the coil to match the local space availability within the device housing. The coil includes a first portion with a first wire diameter and a second portion with a second wire diameter, where the diameter changes correspond to the irregular geometry of the housing cavity. This allows the coil to efficiently fill available space while maintaining manufacturing feasibility through a systematic diameter variation approach.
Solution Approach 2:
The patent implements dynamics by transitioning from a static uniform diameter coil to a dynamic variable diameter coil that adapts to the housing geometry. The wire diameter is not constant but varies along the coil length, allowing the coil to conform to irregular spaces. This dynamic adaptation enables better space utilization without requiring complex custom manufacturing processes.
2Ease of operation
If the device housing size is kept small for portability, then device convenience is improved, but available space for charging coil arrangement is reduced
Solution Approach 1:
The variable diameter coil design allows different sections of the coil to have different wire diameters optimized for their specific locations within the compact housing. This enables efficient packing of the charging coil into the limited space available in portable devices, maximizing the useable area without increasing overall device dimensions.
Solution Approach 2:
The patent employs nesting by arranging multiple loops of the charging coil within the constrained housing space. The variable diameter design allows inner loops to be positioned closer to the center while outer loops utilize peripheral spaces, creating a nested arrangement that efficiently fills the available volume without increasing the device's external dimensions.
3Adaptability or versatility
If irregular protrusions and recesses are added to device housing for ergonomic or functional purposes, then device comfort and function are enhanced, but empty unutilized space is created
Solution Approach 1:
The patent addresses irregular housing features by varying the coil wire diameter to match the local geometry. Where the housing has protrusions or recesses, the coil diameter is adjusted accordingly to fill these irregular spaces. This allows the charging coil to conform to ergonomic features and functional protrusions while eliminating empty spaces that would otherwise be wasted.
Solution Approach 2:
The variable diameter coil design embraces the asymmetric nature of irregular housing geometries. Rather than requiring a symmetric uniform coil, the patent uses asymmetric diameter variation to match the asymmetric protrusions and recesses in the housing, thereby utilizing all available space including areas around ergonomic features.
4Volume of moving object
If variable diameter conduit is used to conform to irregular housing geometry, then space utilization is maximized, but manufacturing complexity increases
Solution Approach 1:
The patent manages the complexity of variable diameter construction by applying local quality principles - each section of the coil has a specific diameter matched to its location, but the overall structure follows a systematic pattern. This approach maximizes space utilization while keeping manufacturing complexity manageable through a methodical diameter variation strategy rather than completely custom construction.
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 enables efficient use of irregularly shaped spaces within device housings, improving charging efficiency and reducing the risk of coil shifting, while providing support to operational components and enhancing overall device performance without increasing the device's size.
Implementation Method 1
A wireless charging coil is disclosed that can include first and second loops with the first loop arranged along a peripheral portion of the charging coil and the second loop arranged within a central portion of the charging coil
Data Source
AI summary
This application relates to inductive charging coil configurations. In particular, the wireless charging coil configurations are arranged in a shape and size suitable for utilizing available space within a device housing. In some embodiments, wires making up the charging coil have varying diameters configured to optimize the size and shape of the charging coil so that available space can be fully utilized.