Inverter Stack Detachment via Segmented Relay Bar
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Solution Overview
Problem
The existing inverter apparatus with an inverter stack and switchboard configuration is complex to detach due to the need to remove multiple fastening members, making maintenance and removal cumbersome.
Innovation Solution
The inverter apparatus features output relay terminals in the storage bottom portion of the switchboard that extend along the entering direction of the inverter stack, allowing for easy detachment by unfastening from the output relay bar, and input relay bars with notched hole portions for simple disconnection, facilitating the release of the inverter stack from the switchboard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the output relay terminal is connected to the output terminal through a flat plate-like output relay bar with multiple fastening members, then the connection strength is improved, but the ease of detachment deteriorates
Solution Approach 1:
The output relay bar is divided into multiple segments (first output relay bar and second output relay bar) that can be independently removed. This segmentation allows the inverter stack to be detached in stages, improving ease of operation while maintaining connection strength when assembled
Solution Approach 2:
The second output relay bar is designed to be extractable from the first output relay bar through a through-hole. This extraction mechanism allows the output relay terminal to be completely removed from the inverter stack for maintenance or replacement without damaging other components
2Reliability
If multiple fastening members are used to secure the output relay bar and input relay bar, then the reliability of connection is improved, but the device complexity increases
Solution Approach 1:
Multiple fastening members (nuts and bolts) are merged into a standardized fastening system that uses identical components throughout the structure. This merging reduces the variety of parts needed and simplifies assembly procedures while maintaining high connection reliability
Solution Approach 2:
The fastening members are designed with universal applicability - the same nuts and bolts are used for fastening the output relay bar to both the output terminal and the switchboard, and similarly for the input relay bar. This universality reduces device complexity by eliminating the need for specialized fasteners
Data Source
AI summary
An inverter apparatus includes an inverter stack having casters at bottom and a switchboard for entering the inverter stack from a front side to store. The switchboard has an output relay terminal, at a storage bottom portion to store the inverter stack, extending along an entering direction of the inverter stack. The output relay terminal is attached with an output electric wire connected to a load at a rear end portion, is connected to an output terminal of the inverter stack at a front end portion, and is fastened to an output relay bar protruding downward from the bottom of the inverter stack through a fastening member.