Modular Power Conversion Device With Pushing Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Railway vehicles require large-capacity power conversion circuits that are difficult to assemble and maintain due to their restricted installation space, and existing power conversion devices are not easily miniaturized or disassembled for maintenance.
Innovation Solution
A power conversion device with a pushing mechanism and center-mounted refrigerant pipe connectors allows for easy assembly and disassembly of power units within a housing, utilizing a liquid cooling system and gathering wiring and pipes in a central space to minimize size and facilitate maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the power conversion circuit is configured by a plurality of power units to improve assembly and maintenance performance, then the ease of repair is improved, but the device complexity increases
Solution Approach 1:
The power conversion device is divided into multiple independent power units (first power unit, second power unit, etc.), each with its own semiconductor elements and cooling plates. This segmentation allows individual units to be easily removed and replaced for maintenance without affecting the entire system, directly improving ease of repair while the modular structure helps manage device complexity through standardized interfaces.
2Volume of moving object
If the power conversion device is miniaturized to fit restricted installation space, then the volume is reduced, but the ease of operation deteriorates
Solution Approach 1:
By dividing the compact power conversion device into modular power units, the patent enables easy assembly and disassembly despite the reduced overall size. Each power unit can be independently installed or removed from the housing, maintaining ease of operation even in the constrained space of a railway vehicle floor installation.
Solution Approach 2:
The power units are designed to be nested within or tightly integrated into the housing structure, with cooling plates and semiconductor elements arranged in a space-efficient manner. This nesting approach minimizes the overall device volume while preserving accessibility for maintenance operations.
3Volume of moving object
If units are mounted with high density to reduce device size, then the volume is reduced, but the ease of repair deteriorates
Solution Approach 1:
The high-density mounting is achieved through segmentation into standardized power units with uniform interfaces. Each unit maintains independent accessibility despite dense packing, allowing maintenance personnel to remove and replace individual units without disassembling adjacent components, thus preserving ease of repair in a compact configuration.
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 solution enables a compact, easily maintainable power conversion device that can be efficiently cooled and assembled/disassembled, addressing the challenges of space constraints and maintenance complexity in railway vehicle installations.
Implementation Method 1
A liquid cooling manner is employed as a cooling method of the semiconductor element
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a power conversion device including: a housing (100); a plurality of power units (200) that are mounted in the housing (100) and includes a power conversion circuit; and a cooling device (300) that is mounted in the housing (100) and cools down the plurality of power units (200) using a liquid refrigerant, wherein the plurality of power units (200) are configured to be detachably attached to the housing (100) one by one, and the housing (100) includes a mechanism (110) that pushes the power unit (200) when the power unit (200) is mounted in the housing (100).