Laptop Back Cover Heat Dissipation Structure for RF Tag Sensing
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Solution Overview
Problem
Laptops face stringent heat dissipation challenges due to their compact design, requiring increased heat dissipation areas for all components, which existing solutions fail to adequately address.
Innovation Solution
A back cover heat dissipation structure incorporating a radio frequency tag module with a metal foil, such as aluminum, that covers both the module and the plating region, enhancing heat dissipation and adjusting impedance to optimize sensing capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the laptop is designed with compact dimensions and thickness, then portability is improved, but heat dissipation area is reduced
Solution Approach 1:
The patent utilizes the back cover surface as an additional heat dissipation dimension. By integrating a metal foil layer on the back cover that extends beyond the laptop's main body boundaries, the solution creates a new thermal dissipation pathway in the external dimension, effectively increasing heat dissipation area without compromising the compact form factor.
Solution Approach 2:
The back cover is designed to serve multiple functions: it acts as both the structural enclosure and a heat dissipation surface. The metal foil integration transforms the back cover into a dual-purpose component that provides both mechanical protection and thermal management, eliminating the need for separate heat dissipation structures.
2Temperature
If metal foil is added to increase heat dissipation area, then heat dissipation is improved, but impedance matching of RF tag module may deteriorate
Solution Approach 1:
The metal foil is selectively positioned to cover only specific regions of the back cover while deliberately excluding the RF tag module area. This localized approach allows the foil to provide heat dissipation where needed while maintaining the electromagnetic environment required for RF tag functionality, thus resolving the conflict between thermal management and RF performance.
Solution Approach 2:
The back cover surface is segmented into different functional zones: a heat dissipation zone covered by metal foil and an RF tag zone left uncovered. This spatial segmentation allows each region to optimize its specific function without interfering with the other, enabling both effective heat dissipation and reliable RF tag operation.
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
This configuration effectively increases the heat dissipation area of laptop components and improves the radio frequency tag module's sensing capability, preventing sensing failures by operating within a suitable frequency range.
Implementation Method 1
The metal foil covers the bottom side of the circuit board and extends to cover the plating region... increase the heat dissipation area of all the components and parts of the laptop
Data Source
AI summary
A back cover heat dissipation structure of a laptop includes a radio frequency tag module, a back cover, and a metal foil. The radio frequency tag module includes a circuit board with a component region and an antenna region. The component region and the antenna region are disposed on a bottom side and a top side of the circuit board, respectively. The back cover includes a plating region and a receiving chamber. The receiving chamber receives the radio frequency tag module. The top side of the circuit board is attached to the bottom of the receiving chamber. The metal foil not only covers the bottom side of the circuit board but also extends to cover the plating region. Therefore, not only is heat dissipation achieved, the impedance of components on the circuit board can also be adjusted to optimize the sensing capability of the radio frequency tag module.