Power Connector Interlock to Prevent High-Power DC Arcing
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Solution Overview
Problem
The risk of electrical arcing between high-power DC connectors and telecommunications devices poses hazards such as damage to equipment, fire, electrocution, and brand reputation when connectors are removed while electric current is flowing, necessitating protection measures.
Innovation Solution
An apparatus comprising a power enclosure electrically coupled to a power supply module, a power connector dimensioned to mate with the enclosure, and a power switch that enables current flow when fully mated and prevents flow when not engaged, preventing arcing during connector installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If high-power DC connector is removed while electric current is flowing, then connector can be easily installed and removed, but electrical arcing occurs causing damage and safety hazards
Solution Approach 1:
The power switch is activated in advance through a mechanical linkage connected to the connector. When the connector is fully inserted, the linkage automatically turns on the power switch, ensuring the circuit is ready before power is applied. This preliminary action prevents arcing during insertion by ensuring the circuit is properly prepared beforehand.
Solution Approach 2:
The mechanical linkage system prevents the power switch from being activated unless the connector is properly seated. This preliminary anti-action blocks premature power activation that would cause arcing, while still allowing easy connector removal by simply disengaging the connector from the enclosure.
2Object-affected harmful factors
If power switch is added to control current flow, then arcing is prevented, but device complexity increases
Solution Approach 1:
The power switch mechanism is merged with the connector assembly through a mechanical linkage. The linkage is an integral part of the connector structure, eliminating the need for separate control systems. This merging reduces overall complexity while providing effective arcing protection through coordinated switch activation.
Solution Approach 2:
The connector assembly automatically controls the power switch through its own mechanical movement. The linkage is driven by the connector's insertion motion itself, requiring no external control system or additional actuators. The system serves itself by using the connector's own movement to activate the protective switch mechanism.
Data Source
AI summary
A disclosed apparatus may include (1) a power enclosure electrically coupled to a power supply module of a computing device, (2) a power connector that (A) is electrically coupled to a power cable that facilitates carrying electric current to the power supply module via the power enclosure and (B) is dimensioned to mate with the power enclosure, and (3) at least one power switch that (A) is electrically coupled to the power enclosure, (B) is configured to be engaged by at least one feature of the power connector while the power connector is fully mated with the power enclosure, and when engaged by the feature of the power connector, (C) enables electric current to flow from the power connector to the power supply module via the power enclosure. Various other apparatuses, systems, and methods are also disclosed.