Integrated Bus Duct Shell Structure for Grounding and Waterproof Rigidity
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Solution Overview
Problem
Existing bus duct shells have low grounding capacity and poor rigidity and waterproof performance, making them inadequate for high-power applications.
Innovation Solution
The bus duct shell design includes a first and second lateral plate, a first and second cover plate, and integrally formed end heads that extend beyond the plates, with friction stir welding connecting the plates, creating a robust and watertight cavity for bus bars, enhancing grounding and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bus duct shell structure is used, then manufacturing is simple, but grounding capacity is low
Solution Approach 1:
The end head is integrally formed with the cover plate and lateral plates, merging multiple components into a single integrated structure. This integral formation provides continuous grounding path and improves grounding capacity while maintaining manufacturing simplicity through unified fabrication processes like pressure molding or friction stir welding.
Solution Approach 2:
The bus duct shell employs composite construction with the end head integrally formed with cover plates and lateral plates. This composite structure combines multiple functional elements (grounding, structural support, enclosure) into a unified assembly that enhances grounding capacity while distributing structural loads effectively.
2Strength
If traditional bus duct shell structure is used, then manufacturing is simple, but rigidity is poor
Solution Approach 1:
The end head is integrally formed with the cover plate and lateral plates, creating a rigid integrated structure. This integral formation eliminates weak joints and provides continuous structural support, significantly improving the overall rigidity of the bus duct shell while maintaining manufacturing simplicity through unified fabrication processes.
Solution Approach 2:
The end head includes bent portions that extend beyond the lateral plates, creating a curved or extended structure. This geometric configuration increases the moment of inertia and provides enhanced structural rigidity, preventing deformation under load while maintaining a relatively simple integrated construction.
3Reliability
If traditional bus duct shell structure is used, then manufacturing is simple, but waterproof performance is poor
Solution Approach 1:
The end head is integrally formed with the cover plate and lateral plates, creating a seamless joint structure. This integral formation eliminates gaps and seams where water could penetrate, providing inherent waterproof performance through the continuous metal structure without requiring additional sealing components.
Solution Approach 2:
The end head extends beyond the lateral plates and includes bent portions that are formed during the integral manufacturing process. This preliminary geometric configuration creates an overlapping or extended structure that prevents water ingress before it can reach the joint areas, providing built-in waterproof protection.
4Reliability
If current is transmitted through traditional structure, then power transmission is achieved, but current concentrates at specific points causing overheating
Solution Approach 1:
The end head is integrally formed with the cover plate and lateral plates, creating a continuous grounding structure. This integral formation provides multiple parallel current paths and distributes current flow across the entire end head structure, preventing current concentration at specific connection points and reducing overheating risk.
Solution Approach 2:
The integral structure of the end head with cover plates and lateral plates creates a homogeneous grounding system with uniform current distribution. The continuous metal structure ensures equal potential across the grounding surface, preventing localized current density peaks that would cause overheating or melting.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves grounding capacity and rigidity while maintaining waterproof performance, ensuring reliable high-power transmission without concentration of current at specific points, thus preventing overheating and melting.
Implementation Method 1
the first cover plate is, via either side thereof, connected to the first lateral plate and the second lateral plate respectively over the entire length in the first direction by friction stir welding
Data Source
AI summary
Provided is a bus duct shell, including: a first lateral plate; a second lateral plate opposite the first lateral plate; a first cover plate; a second cover plate opposite the first cover plate; a first end being integrally formed with the first cover plate and extending from the end of the first cover plate beyond the first lateral plate and the second lateral plate; and a second end being integrally formed with the second cover plate and extending from the end of the second cover plate beyond the first lateral plate and the second lateral plate, wherein the first later plate, the second later plate, the first cover plate and the second cover plate extend in a first direction and define a cavity for accommodating a bus and extending in the first direction. Further provided is a bus duct including the bus duct shell.