Detachable Power Module Assembly Bus Bar Design
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Solution Overview
Problem
Current power module assemblies, which integrate capacitor and power modules as inseparable structures, pose challenges for maintenance due to their large weight and complexity, making them inconvenient for repair and maintenance.
Innovation Solution
A separable power module assembly design where the power module and capacitor module are detachably connected via bus bars with specific connection and installation portions, reducing stray inductance and facilitating easier maintenance by allowing separate disassembly and assembly, with a fastener system for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If capacitor module and power module are designed as inseparable structures, then structural integrity is improved, but maintenance difficulty increases and weight becomes excessive
Solution Approach 1:
The power module assembly is segmented into separable capacitor module and power module components, each with independent bus bar connection structures. This allows the modules to be easily disconnected and removed for maintenance while maintaining structural integrity during operation through the fastener connection system.
2Stability of the object's composition
If capacitor module and power module are designed as inseparable structures, then structural stability is improved, but device weight increases to over 100 kg
Solution Approach 1:
By dividing the assembly into separate modules that can be independently handled and installed, the overall system weight is reduced while maintaining structural stability through optimized bus bar connection designs with fasteners.
3Ease of repair
If detachable connection is implemented, then ease of maintenance is improved, but connection complexity increases
Solution Approach 1:
The connection function is extracted into dedicated bus bar structures with fasteners, separating the connection mechanism from the main module bodies. This simplifies the overall design by making the connection system modular and standardized, reducing actual complexity despite enabling easy maintenance.
4Ease of manufacture
If traditional inseparable design is used, then manufacturing simplicity is maintained, but stray inductance increases
Solution Approach 1:
The segmented module design with dedicated bus bar connection portions allows for optimized current paths and reduced loop areas, effectively minimizing stray inductance while maintaining manufacturing simplicity through standardized connection structures.
Data Source
AI summary
The present disclosure provides a power module assembly and a converter. The power module assembly includes a power module and a capacitor module, and the power module and the capacitor module are configured to be detachably connected; the power module includes a first bus bar, and the first bus bar includes a first connection portion and a power installation portion connected to the first connection portion; the capacitor module includes a second bus bar, and the second bus bar includes a second connection portion and a capacitor installation portion connected to the second connection portion, wherein the first connection portion and the second connection portion extend along a first direction, and the power installation portion and the capacitor installation portion extend along a second direction; the first connection portion and the second connection portion are connected by a fastener.