Pluggable Power Distribution Component With Reverse-Insertion Blocking
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Solution Overview
Problem
The existing power distribution systems in communication base stations and data centers face challenges with reverse insertion of plug-in circuit breakers, leading to potential short-circuit overheating due to reverse connection of positive and negative electrodes, and this limits flexibility in onsite configuration.
Innovation Solution
A power distribution component with a mistake-proofing structure that protrudes at the second end, featuring an abutting surface to prevent reverse insertion by contacting the signal busbar when incorrectly inserted, eliminating the need for guide troughs and limiting plates, thus enhancing safety and configuration flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guide trough and limiting plate are used to prevent reverse insertion, then reverse connection is prevented, but configuration flexibility is reduced
Solution Approach 1:
The patent applies asymmetry by providing the mistake proofing structure only at the second end (positive electrode side) of the power distribution component, while the first end (negative electrode side) has no such structure. This asymmetric design prevents reverse insertion by creating a physical mismatch when attempted, while maintaining configuration flexibility by not requiring symmetric limiting structures on both sides.
Solution Approach 2:
The mistake proofing structure protrudes in advance to prevent reverse insertion before electrical contact can occur. When the component is attempted to be inserted backwards, the protruding structure at the second end contacts the signal busbar first, physically blocking further insertion and preventing the harmful reverse connection before it can happen.
2Reliability
If a limiting plate is disposed on the power distribution box, then reverse insertion is prevented, but structure complexity increases
Solution Approach 1:
The patent extracts the reverse insertion prevention function from the power distribution box (removing the need for limiting plates on the box) and relocates it to the power distribution component itself through the mistake proofing structure. This transfers the protective function to the pluggable component, simplifying the overall system structure.
Solution Approach 2:
The power distribution component performs its own reverse insertion prevention through the self-contained mistake proofing structure, eliminating the need for external limiting plates on the power distribution box. The component protects itself against incorrect insertion without requiring additional structures on the receiving end.
3Manufacturing precision
If guide troughs are used for insertion guidance, then insertion accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of using guide troughs that require precise molding of cavities in the power distribution box, the patent inverts the approach by providing a protruding mistake proofing structure on the component itself. This converts a cavity-forming requirement into a simpler protrusion feature, reducing manufacturing complexity while maintaining insertion guidance functionality.
Data Source
AI summary
The power distribution component is configured to connect to a power distribution box in a pluggable manner. A main body is provided with a first power terminal, a signal terminal, and a second power terminal that are arranged along a first direction. The first power terminal is configured to electrically connect to a first power busbar of the power distribution box, the signal terminal is configured to electrically connect to a signal busbar of the power distribution box, and the second power terminal is configured to electrically connect to a second power busbar of the power distribution box. Polarities of the first power terminal and the second power terminal are opposite. An end, facing away from the main body, of the mistake proofing structure is provided with an abutting surface, configured to abut against the signal busbar when the power distribution component is reversely inserted into the power distribution box.