Power Connector Interlock to Prevent High-Power DC Arcing
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Solution Overview
Problem
High-power arcing between telecommunications device connectors poses risks of damage, fire, electrocution, and brand reputation, occurring when high-power DC connectors are removed while electric current is flowing.
Innovation Solution
A power enclosure system with a power switch that engages upon full mating of the connector, enabling or disabling current flow to prevent arcing during installation and removal, using conductive and insulative materials to facilitate safe power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If high-power DC connectors are removed while electric current is flowing, then connector installation flexibility is improved, but electrical arcing occurs causing damage and safety risks
Solution Approach 1:
The power switch is configured to automatically detect when a connector is fully mated and proactively opens the circuit to stop current flow before the connector is removed. This preliminary action of cutting power prevents arcing from occurring during connector removal, while still allowing flexible hot-plug operation.
2Object-affected harmful factors
If power switch is added to control current flow, then arcing prevention is improved, but device complexity increases
Solution Approach 1:
The power switch is configured to automatically detect connector mating status and control current flow without requiring external control signals or complex control circuits. The connector's own physical presence triggers the power switch to open or close, making the system self-regulating and minimizing additional complexity.
Solution Approach 2:
The power switch acts as an intermediary component between the power source and the connector. It provides a simple on/off control mechanism that prevents arcing without requiring complex control systems, managing the power flow based on connector presence.
3Power
If multiple power supplies are used to increase power consumption, then power delivery capability is improved, but arcing risk increases
Solution Approach 1:
The power switch applies preliminary anti-action by opening the circuit and stopping current flow before connector removal can cause arcing. This preventive measure counteracts the increased arcing risk that comes with higher power levels, allowing multiple power supplies to be used safely without proportionally increasing danger.
Data Source
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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.