Asymmetric Coil Holder Layout for Multi-Size Wireless Charging
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Solution Overview
Problem
Existing wireless charging holders are limited to charging devices of a predetermined size, failing to accommodate various devices of different sizes efficiently.
Innovation Solution
A coil module with a holder featuring angled stoppers and a coil design that allows for efficient charging of devices of varying sizes by ensuring proper overlap of the receiving coil with the charging coil, maintaining high power transmission efficiency and user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a holder with a coil is designed for charging target devices, then wireless charging function is achieved, but the holder can only charge target devices of a predetermined size
Solution Approach 1:
The coil is designed with an asymmetric outer size configuration where the dimension in the third direction (inclined at a predetermined angle to the first direction) is larger than the dimension in the fourth direction (orthogonal to the third direction). This asymmetric design allows the coil to accommodate target devices of various sizes by providing extended coverage in the inclined direction while maintaining a compact profile in the orthogonal direction, thereby resolving the contradiction between versatility and structural simplicity
2Adaptability or versatility
If the coil outer size is increased to accommodate larger devices, then compatibility with various device sizes improves, but the holder structure becomes more complex
Solution Approach 1:
Instead of uniformly increasing the coil size in all directions, the invention applies asymmetric expansion where the coil's outer size in the third direction (inclined direction) is specifically enlarged compared to the fourth direction (orthogonal direction). This selective asymmetric expansion achieves broader device compatibility without proportionally increasing overall structural complexity, as the coil maintains a compact footprint in the orthogonal direction while extending coverage where needed
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
Enables efficient charging of devices of different sizes with high power transmission efficiency and user-friendly design, facilitating secure placement and handling.
Implementation Method 1
a coil provided so as to overlap the flat-plate part of the holder... Transform Electrical Energy to Magnetic Energy
Data Source
AI summary
Disclosed herein is a coil module that includes a holder having a flat-plate part for placing thereon a target device, a first stopper extending in a first direction along a first side of the flat-plate part, and a second stopper extending in a second direction orthogonal to the first direction along a second side of the flat-plate part; and a coil provided so as to overlap the flat-plate part of the holder. As viewed in a coil axis direction, an outer size of the coil in a third direction inclined at a predetermined angle with respect to the first direction is larger than an outer size of the coil in a fourth direction orthogonal to the third direction.