Receptacle Heat Spreader for Pluggable Module Thermal Management
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Solution Overview
Problem
The increasing heat generated by high-density, high-power, and high-switching-speed pluggable modules in transceiver assemblies leads to overheating issues, as existing heat sinks often fail to dissipate heat effectively, particularly when modules are arranged in multiple ports, resulting in some modules being thermally isolated and prone to failure.
Innovation Solution
A receptacle assembly with a heat spreader and spring mechanism that thermally communicates with pluggable modules, ensuring all modules are in contact with the heat spreader, which extends to a heat exchanger for efficient heat dissipation, regardless of their position within the assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat sink is mounted to the cage for thermal communication with pluggable modules, then heat dissipation is improved, but some pluggable modules may still overheat due to incomplete thermal coverage across multiple ports
Solution Approach 1:
The heat spreader is divided into multiple segments corresponding to different ports within the cage. Each segment can be independently activated to provide thermal communication only to ports that have pluggable modules installed, ensuring complete thermal coverage without wasting resources on empty ports.
Solution Approach 2:
The system transitions from a static heat sink configuration to a dynamic heat spreader system that can adaptively activate or deactivate thermal communication pathways based on the presence or absence of pluggable modules in each port, optimizing thermal coverage for any configuration.
2Adaptability or versatility
If the cage includes multiple ports arranged in columns and rows, then device versatility is improved, but thermal communication coverage becomes incomplete leading to overheating in some modules
Solution Approach 1:
The heat spreader is segmented to correspond with the multi-port cage configuration, allowing each port to have its own thermal communication pathway. This segmentation enables the system to support any combination of populated ports while ensuring each module receives adequate thermal management.
Solution Approach 2:
The heat spreader system is designed to universally support multiple port configurations and arrangements. The same heat spreader structure can accommodate any number of ports in any arrangement, providing universal thermal communication capability across all possible configurations.
3Temperature
If a heat sink is mounted along an upper side of the cage, then heat dissipation is improved for upper port modules, but lower port modules are left without thermal communication
Solution Approach 1:
The heat spreader is divided into spatial segments that correspond to different physical locations within the cage (upper, lower, left, right sides). Each segment can be independently activated to provide thermal communication to modules in that specific region, ensuring comprehensive coverage regardless of which ports are populated.
4Productivity
If pluggable modules operate at high power output levels and switching speeds, then productivity is improved, but heat generation increases causing performance loss or failure
Solution Approach 1:
The heat spreader acts as an intermediary thermal management component between the pluggable modules and the external environment. It provides a dedicated thermal pathway that efficiently transfers heat from high-power modules to the cage structure and ultimately to the surrounding air, enabling sustained high-performance operation without thermal runaway.
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 solution effectively prevents overheating by ensuring all pluggable modules are thermally communicated with, allowing for efficient heat dissipation and maintaining performance and reliability across multiple ports.
Implementation Method 1
The cage includes a spring configured to engage the pluggable module when the pluggable module is received within the port such that the spring is configured to press the pluggable module in thermal communication with the module side of the cage segment
Implementation Method 2
A heat spreader is provided including a cage segment configured to be mounted to the cage such that the cage segment extends over at least a portion of the cage with a module side of the cage segment facing the port... the extension segment is configured to be engaged in thermal communication with a heat exchanger
Data Source
AI summary
A receptacle assembly includes a cage having an interior cavity that includes a port. The cage has a front end that is open to the port. The port is configured to receive a pluggable module therein through the front end of the cage. The cage includes a spring. A heat spreader includes a body having a cage segment that is configured to be mounted to the cage such that the cage segment extends over at least a portion of the cage with a module side of the cage segment facing the port. The body includes an extension segment that extends from the cage segment in a direction generally away from the cage. The extension segment is configured to be engaged in thermal communication with a heat exchanger. The spring is configured to engage the pluggable module when the pluggable module is received within the port such that the spring is configured to press the pluggable module in thermal communication with the module side of the cage segment of the heat spreader.