Flash Module EMI Shielding via Integrated Gasket and Stiffener
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Solution Overview
Problem
Storage assembly systems, particularly those with flash modules and printed circuit boards, are vulnerable to electromagnetic interference (EMI) unless properly shielded, which can affect the performance of electrical circuits and lead to data loss.
Innovation Solution
The implementation of a chassis with EMI gaskets and covers made of materials like aluminum that provide both heat dissipation and EMI shielding, along with a super capacitor for power retention during disconnection, ensures that flash modules are protected from external electromagnetic interference and can maintain data integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flash modules and printed circuit boards are housed in a chassis without additional shielding, then the device complexity is reduced and ease of manufacture is improved, but the components become vulnerable to electromagnetic interference (EMI) affecting circuit performance and data integrity
Solution Approach 1:
The chassis is designed to serve multiple functions simultaneously: it provides structural support, housing for components, thermal management through integrated heat sinks, and EMI shielding through conductive materials and gaskets. This multi-functionality eliminates the need for separate shielding components while maintaining protection against electromagnetic interference.
Solution Approach 2:
The patent employs composite shielding structures combining conductive materials (such as aluminum) with EMI gaskets made of conductive foam or fabric. These composite materials provide effective EMI shielding while maintaining mechanical compliance and electrical conductivity necessary for shielding effectiveness.
2Object-affected harmful factors
If EMI shielding components such as gaskets and conductive covers are added, then protection against electromagnetic interference is improved, but the device complexity increases and manufacturing difficulty increases
Solution Approach 1:
The patent merges EMI shielding functions into existing chassis components. The chassis itself is designed with integrated shielding features, and EMI gaskets are incorporated during the assembly process rather than being separate add-on components. This integration reduces the number of discrete parts and simplifies the overall system architecture.
Solution Approach 2:
The patent uses flexible EMI gaskets made of conductive foam or fabric that can be easily installed in gaps and crevices. These flexible shielding materials conform to irregular surfaces and provide effective EMI protection without requiring complex rigid shielding structures, thereby reducing manufacturing complexity.
3Object-affected harmful factors
If aluminum covers and heat sinks are used for EMI shielding, then both EMI protection and heat dissipation are improved, but the weight of the chassis increases
Solution Approach 1:
The aluminum covers serve dual purposes: providing EMI shielding and acting as heat sinks for thermal management. By designing the shielding structure to also perform the heat dissipation function, the patent eliminates the need for separate cooling components, thereby minimizing weight increase while achieving both EMI protection and thermal management.
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
The solution effectively shields flash modules from EMI, preventing performance degradation and ensuring data persistence by using EMI gaskets and heat-dissipating materials, while the super capacitor ensures continued power availability during disconnection, thus safeguarding data storage.
Implementation Method 1
a chassis with EMI gaskets and covers made of materials like aluminum that provide both heat dissipation and EMI shielding
Implementation Method 2
covers made of materials like aluminum that provide both heat dissipation and EMI shielding
Implementation Method 3
a super capacitor for power retention during disconnection
Data Source
AI summary
A chassis includes a flash module comprising a cover and an integrated connector, a metal stiffener, an electromagnetic interference (EMI) gasket, and a midplane. The flash module is connected to the midplane using the integrated connector, the integrated connector extends past the cover of the flash module, and, when the flash module is connected to the midplane, the cover of the flash module is in direct contact with the EMI gasket, in which the metal stiffener is interposed between the EMI gasket and the midplane.