Wireless Charging Heat Dispersion via Shield Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless charging in portable terminals leads to heat concentration at the driving circuit unit, causing performance deterioration and reduced efficiency due to inadequate heat dispersion, especially when combined with NFC antenna elements.
Innovation Solution
A wireless charging apparatus with a heat dispersion module that includes a heat emission plate and a heat dispersion member, which disperses heat generated by the driving circuit unit to the outside, preventing hotspots and improving reliability by integrating the heat dispersion mechanism with the shield member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless charging is implemented in portable terminals, then wireless charging function is provided, but heat is concentrated at the driving circuit unit causing performance deterioration
Solution Approach 1:
The patent extracts the heat dispersion function from the overall wireless charging system by introducing a separate heat dispersion member. This member is specifically designed to extract heat from the driving circuit unit area, separating the heat management function from the charging function and preventing heat concentration at the driving circuit unit.
Solution Approach 2:
The heat dispersion member acts as an intermediary between the driving circuit unit and the surrounding environment. It mediates heat transfer by providing a dedicated thermal conduction path from the driving circuit unit to external areas, preventing direct heat accumulation at the circuit unit while enabling controlled heat dissipation.
2Temperature
If heat dispersion structure is added to disperse heat from driving circuit unit, then heat dispersion performance is improved, but device complexity increases
Solution Approach 1:
The heat dispersion member is designed to perform multiple functions simultaneously: it provides heat dispersion from the driving circuit unit, maintains electromagnetic shielding by being integrated with or adjacent to the shield member, and fits within the limited space of the portable terminal. This multi-functionality reduces the need for separate dedicated components for each function.
Solution Approach 2:
The patent merges the heat dispersion function with the existing shield member structure. The heat dispersion member is positioned to work in conjunction with the shield member, combining thermal management and electromagnetic shielding functions in a integrated arrangement, thereby reducing overall device complexity while achieving both objectives.
3Temperature
If graphite material is applied to driving circuit unit to disperse heat, then heat dispersion is improved, but NFC antenna element deteriorates and wireless charging efficiency is lowered
Solution Approach 1:
Instead of applying heat dispersion material uniformly across the driving circuit unit, the patent implements localized heat dispersion by positioning the heat dispersion member specifically in the area where heat concentrates. This localized approach disperses heat effectively while avoiding contact with or interference to the NFC antenna element and other sensitive components, preserving their performance.
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
Effectively reduces the temperature at the hotspot by 3 to 4 degrees, preventing structural deformation and enhancing the reliability and efficiency of the wireless charging and NFC functions.
Implementation Method 1
a heat dispersion member mounted to the driving circuit unit and the shield member to disperse heat generated by the driving circuit unit
Implementation Method 2
The wireless charging technologies include an inductive coupling type using magnetic fields... a primary coil provided in a charger and a secondary coil provided in a terminal are arranged such that the terminal can be charged
Data Source
AI summary
A wireless charging apparatus provided in an electronic device is provided. The wireless charging apparatus includes a charging resonance unit for wireless charging; a driving circuit unit to which the charging resonance unit is connected and to which an internal circuitry is mounted; a shield member mounted to a rear surface of the charging resonance unit; and a heat dispersion member mounted to the driving circuit unit and the shield member to disperse heat generated by the driving circuit unit.