Coil Module Layout for Wireless Charging and MST

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Solution Overview

Problem

The integration of various coils in mobile terminals for multifunctionality conflicts with the trend towards miniaturization and slimness, complicating the layout and requiring efficient management of space for other modules like camera and sensor modules.

Innovation Solution

A coil module design featuring a substrate with upper and lower coils and a lower outer pattern, allowing for flexible current flow directions and configurations to support wireless power reception and magnetic secure transmission functions, while optimizing space utilization by forming a magnetic field in challenging lower portions of the terminal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If various types of coils are mounted in a mobile terminal to provide multifunctionality, then wireless charging and magnetic secure transmission functions are enabled, but the layout becomes complicated and conflicts with miniaturization and slimness trends

Engineering Contradiction:

ImprovemultifunctionalityVSAvoidlayout complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple coil structures (upper coil, lower coil, and lower outer pattern) into a single integrated coil module that can perform both wireless charging and magnetic secure transmission functions. This merging approach enables multifunctionality while simplifying the overall layout compared to using separate coils for each function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The coil module is designed as a universal structure that can operate in multiple modes: wireless power reception mode using the lower coil, and magnetic secure transmission mode using the upper coil and lower outer pattern. This multi-functional design allows a single component to replace what would traditionally require multiple separate coils.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If various types of coils are mounted in a mobile terminal, then wireless charging and magnetic secure transmission functions are enabled, but the terminal size increases conflicting with miniaturization trends

Engineering Contradiction:

Improvewireless charging and MST functionsVSAvoidterminal area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The lower outer pattern is positioned to surround or enclose the lower coil, creating a nested configuration where the outer pattern forms an external loop that contains the inner loop of the lower coil. This nesting arrangement maximizes space utilization and enables both functions within a compact footprint.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent utilizes vertical stacking by placing the upper coil and lower coil at different positions on the substrate, effectively using the vertical dimension to accommodate multiple coil structures. This three-dimensional arrangement allows multifunctionality without proportionally increasing the horizontal area.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If multiple coils are added to a mobile terminal, then wireless functions are enhanced, but space for other modules like camera and sensor modules is reduced

Engineering Contradiction:

Improvewireless communication functionsVSAvoidavailable space for other modules

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The coil module is segmented into distinct functional regions: the upper coil for MST operations, the lower coil for wireless charging, and the lower outer pattern that works with the upper coil for MST. This segmentation allows each component to be optimized for its specific function while collectively occupying a compact, well-defined area on the substrate.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the coil module have specialized configurations tailored to their specific functions. The upper coil and lower outer pattern are configured with specific loop orientations and connection arrangements optimized for magnetic secure transmission, while the lower coil is optimized for wireless power reception. This local optimization enables efficient space utilization.

Inventive Principle:

Principle #3Local quality

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

Enhances the recognition rate of wireless functions like magnetic secure transmission and increases the degree of freedom in the layout of other modules within the mobile terminal, efficiently arranging multiple coils on a single substrate.

Implementation Method 1

an upper coil disposed on at least one surface of the substrate in an upper portion of the substrate; a lower coil disposed on at least one surface of the substrate in a lower portion of the substrate

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS10748048B2Coil module including a upper coil, a lower coil, a lower outer pattern outside the lower coil, and a local area communications coil outside the lower coil

Publication Date: 2020.08.18 WITS CO LTD

AI summary

A coil module includes a substrate; an upper coil disposed on at least one surface of the substrate in an upper portion of the substrate; a lower coil disposed on at least one surface of the substrate in a lower portion of the substrate; and a lower outer pattern disposed on an outer side of the lower coil in the lower portion of the substrate and connected to either one or both of the upper coil and the lower coil.