Modular Power Supply Assembly for Arc-Safe Hot Swapping
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Solution Overview
Problem
High-capacity network devices with multiple power supply modules (PSMs) pose challenges in servicing due to the complexity and danger of managing numerous input feed cables, making it difficult and risky for technicians to perform 'hot swap' operations, as improper power down can lead to arcing events and safety hazards.
Innovation Solution
A power supply assembly is designed with an input module and a power supply unit that are physically and electrically connected using captive screws and connection components, where processors determine the activation or deactivation of circuitry elements based on connection status, ensuring safe power management and reducing the risk of arcing events during servicing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple power supply modules are used to provide high capacity power, then power output capability is improved, but the complexity of managing input feed cables and performing hot swap operations increases
Solution Approach 1:
The power supply module is divided into separate functional components: an input module for cable connections and a power supply unit for power conversion. This segmentation allows independent handling of connection and power functions, simplifying cable management while maintaining high power output capability through modular scalability.
2Productivity
If hot swap operations are performed on power supply modules, then system availability is improved, but the risk of arcing events and safety hazards increases
Solution Approach 1:
The system performs preliminary detection of connection status and power state before allowing hot swap operations. The processor detects whether the input module is properly connected and whether power is currently being supplied, then controls the power supply unit to safely transition states before module replacement, preventing arcing events while maintaining system availability.
3Reliability
If physical connection between input module and power supply unit is ensured using captive screws, then connection reliability is improved, but the ease of assembly and disassembly decreases
Solution Approach 1:
The captive screws are integrated into the input module housing and automatically engage with the power supply unit when the module is inserted. The screws self-align and secure the connection without requiring separate fastening operations, maintaining high connection reliability while simplifying the assembly process through self-servicing mechanism.
Data Source
AI summary
A power supply assembly includes an input module that includes one or more captive screws, one or more first power supply connection components, and one or more first input feed connection components; and a power supply unit that includes one or more captive screw connection switches, one or more second power supply connection components, and one or more second input feed connection components. The input module is to physically and electrically connect to the power supply unit; the one or more captive screws are to physically engage, respectively, the one or more captive screw connection switches; the one or more first power supply connection components are to physically and electrically connect to, respectively, the one or more second power supply connection components; and the one or more first input feed connection components are to physically and electrically connect to, respectively, the one or more second input feed connection components.