Modular Busbar for Scalable Rack Power Distribution

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Solution Overview

Problem

Conventional rack-based information handling systems face challenges in scalability due to the large number of power cables required for each unit, which hinders modular expansion and flexibility in power distribution.

Innovation Solution

A modular busbar assembly is introduced, featuring vertical and horizontal busbar segments that connect to a power distribution unit at the rear of the rack, allowing for hot pluggable electrical power distribution to IT nodes without the need for multiple power cables, enabling flexible and scalable power supply to varying numbers and sizes of IT gear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate power cables are used for each unit in conventional rack systems, then power can be supplied to each unit, but the number of power cables increases significantly and scalability is hindered

Engineering Contradiction:
ImprovescalabilityVSAvoidcable complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The busbar is divided into multiple modular segments that can be independently configured and connected. Each segment can serve specific IT gear or groups of gear, allowing the power distribution system to be segmented and reconfigured as needed for scalability while reducing overall cable complexity within each segment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple power distribution functions are merged into a single integrated busbar structure. Instead of using separate power cables for each unit, the busbar combines power distribution to multiple units through a unified modular framework, significantly reducing the total number of cables required.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If conventional power distribution methods are used, then power can be supplied to fixed configurations, but modular expansion and flexibility are reduced

Engineering Contradiction:
Improvemodular expansion flexibilityVSAvoidpower distribution flexibility
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The busbar system is designed with dynamic reconfigurability through modular segments that can be added, removed, or repositioned as IT gear is expanded or reconfigured. This dynamic structure allows the power distribution system to adapt flexibly to changing rack configurations without requiring complete system redesign.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The modular busbar segments are designed with universal connection interfaces and standardized dimensions that allow them to serve multiple functions and configurations. The same segment type can power different types of IT gear in various arrangements, providing ease of operation across diverse modular expansion scenarios.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10340691B2Rack power distribution via modular, expandable bus bar for modular and scalable/expandable information handling system
Publication Date: 2019.07.02 DELL PROD LP
  • US10340691B2 patent drawing
  • US10340691B2 patent drawing
  • US10340691B2 patent drawing

AI summary

A rack-based information handling system (IHS) includes a rack having a modular structure that supports insertion from a front of the rack of different numbers and sizes of information technology (IT) gear to create one or more IT nodes. Power bay chassis is received in the rack with a power distribution unit directed towards a rear of the rack. A modular busbar assembly is attached to the rear of the rack. A first vertical busbar segment is in direct electrical connection with the power distribution unit and spans one or more nodes to provide hot pluggable electrical power to an aft-directed connection of an IT node inserted into the rack. A second busbar segment can be attached to the first vertical busbar to electrically communicate with the power distribution unit and span an additional node adjacent to the one or more nodes to provide electrical power to the adjacent node.