Mobile Terminal Metal Case Resonator Wireless Charging
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Solution Overview
Problem
Mobile terminals with metal cases face quality degradation in wireless communication and wireless charging due to the conductive nature of metals, which affects performance and design aesthetics.
Innovation Solution
Incorporating a non-conductive case made of synthetic resin between metal cases to reduce quality degradation, with resonators and matching circuits to enhance wireless communication and charging performance without altering the metal housing design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a metal case is used for the mobile terminal, then the exterior appearance and design aesthetics are improved, but the wireless communication and wireless charging performance deteriorate due to quality degradation of internal components
Solution Approach 1:
A non-conductive case made of synthetic resin is introduced as an intermediary layer between the metal cases. This intermediate layer prevents direct contact between metal components, reducing electromagnetic interference and quality degradation while preserving the metal case aesthetic appearance.
Solution Approach 2:
The mobile terminal employs a composite structure combining metal cases with a synthetic resin non-conductive case. This composite material approach allows the device to maintain the aesthetic benefits of metal while incorporating the electromagnetic shielding properties of non-conductive materials to protect wireless communication components.
2Reliability
If a non-conductive case made of synthetic resin is incorporated between metal cases, then the wireless communication and wireless charging performance is improved, but the design aesthetics and metal housing design may be compromised
Solution Approach 1:
The non-conductive case is strategically positioned only in specific areas where electromagnetic interference occurs, rather than covering the entire device. This localized application preserves the overall metal housing aesthetic while providing targeted protection for wireless communication and charging components.
3Reliability
If additional non-conductive material is added between metal cases, then the quality degradation of internal components is reduced, but the device complexity and manufacturing process are increased
Solution Approach 1:
The non-conductive case is integrated into the existing metal case structure, combining multiple functions into a unified assembly. The non-conductive material serves both as an electromagnetic shield and as a structural component, reducing the need for separate protective elements and simplifying the overall device architecture.
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
Improves wireless communication and charging efficiency while maintaining the metal case design, minimizing the need for additional non-conductive material and preserving aesthetic quality.
Implementation Method 1
a resonator arranged in a terminal body and generating electromagnetic resonance at a preset frequency
Implementation Method 2
a first matching circuit arranged in the terminal body and corresponding to a first frequency, and configured to adjust an impedance of the resonator when receiving electric power wirelessly at the first frequency
Data Source
Figure 1A
Figure 1B
Figure 1C~2
AI summary
There is disclosed a mobile terminal including a housing comprising a first metal case, a second metal case and a first non-conductive case arranged between the first metal case and the second metal case, a battery embedded in the housing, a first coil arranged in an area covered by the first metal case inside the housing, a main board comprising a charging module implemented to recharge the battery using electric currents which flow in the first coil, and a first resonator arranged in an area covered by the first non-conductive case and comprising a first matching circuit corresponding to a first frequency, such that the examples of the mobile terminal in accordance with the present disclosure may enhance performance of the wireless communication unit and wireless charging performance, without design change of the housing having the metal case.