Capacitor Unit Cooling Channel Layout to Limit Heat Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing capacitor cooling structures prioritize cooling converters and inverters over capacitors, leading to inadequate cooling of capacitors in electrical systems.
Innovation Solution
A capacitor unit design where capacitors are arranged in a row with metal-sprayed electrodes facing in the same direction, interspersed with ribs and a container structure that forms a refrigerant channel, allowing efficient heat transfer and cooling via refrigerant circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If capacitors are arranged closely together in a common package, then space utilization is improved, but heat interference between capacitors increases and cooling efficiency deteriorates
Solution Approach 1:
The container is divided into multiple cooling chambers by partition walls, with each chamber containing one or more capacitors. This segmentation isolates the heat from each capacitor, preventing heat accumulation and interference between adjacent capacitors while maintaining compact arrangement.
Solution Approach 2:
Different regions of the capacitor arrangement are provided with different cooling structures. Specifically, partition walls are positioned between capacitors to create localized cooling zones, while the outer walls provide overall structural support and additional cooling surfaces. This local differentiation optimizes heat dissipation for each capacitor individually.
2Device complexity
If a common cooling structure is used for multiple components, then device complexity is reduced, but cooling performance for specific components like capacitors deteriorates
Solution Approach 1:
The cooling structure is segmented into multiple independent cooling chambers, each dedicated to cooling specific capacitors. This segmentation allows optimized cooling paths for capacitors without requiring completely separate cooling systems, balancing complexity and performance.
Solution Approach 2:
The partition walls serve multiple functions: they separate cooling chambers to prevent heat interference, provide additional heat dissipation surfaces, and structurally support the capacitor arrangement. This multi-functionality achieves specialized capacitor cooling without proportionally increasing overall system complexity.
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
Enhances cooling efficiency of capacitors by reducing heat interference and temperature rise, while minimizing parasitic inductance and refrigerant leakage, thus improving overall cooling performance.
Implementation Method 1
heat produced from the capacitors is conducted to the cooling part via the fixing part and the housing
Implementation Method 2
exchanged in the cooling part
Implementation Method 3
heat produced from the capacitors is conducted to the cooling part via the fixing part and the housing
Data Source
AI summary
A capacitor unit includes capacitors that are arranged in a row and each have a metal-sprayed electrode on one end in an axial direction of each capacitor, and a container that receives the capacitors. The capacitors are each arranged in a direction orthogonal to the axial direction of each capacitor with a posture of the metal-sprayed electrode facing in one direction. The container includes a rib intervening between neighboring two capacitors and a wall portion that faces the metal-sprayed electrode. The wall portion constitutes a part of a channel for a refrigerant.