Capacitor Module Cooling Structure for Compact Power Converters
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Solution Overview
Problem
Existing inverter systems in hybrid and electric cars face challenges in cooling efficiency and size reduction, necessitating improved cooling structures for power modules and capacitor modules.
Innovation Solution
A modularized power conversion device with stacked capacitor and power modules, featuring integrated cooling channels and plates, and a refrigerant circulation system for efficient heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cooling systems are used for capacitor module and power module, then each module can be cooled independently, but the overall device size and complexity increase
Solution Approach 1:
The patent combines the cooling systems of the capacitor module and power module into a single integrated cooling structure. The housing contains cooling channels that are positioned to cool both the capacitor and power module simultaneously, eliminating the need for separate cooling systems and reducing overall device complexity while maintaining effective cooling for both components
2Reliability
If multiple separate cooling devices are added to cool both modules, then cooling coverage is improved, but the device size increases
Solution Approach 1:
The patent integrates cooling functionality for both the capacitor module and power module within a single housing structure. The housing contains cooling channels that are positioned to cool both components simultaneously, eliminating the need for multiple separate cooling devices and reducing overall device size while maintaining comprehensive cooling coverage
Solution Approach 2:
The housing serves multiple functions: it provides structural support, contains the capacitor, and incorporates integrated cooling channels that cool both the capacitor and power module. This multi-functional design eliminates the need for additional dedicated cooling components, reducing device size while maintaining effective cooling
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 and reduces size by allowing simultaneous cooling of both modules through refrigerant circulation, improving performance and extending module lifespan while minimizing additional cooling devices.
Implementation Method 1
a pair of cooling channels disposed inside opposite side surfaces perpendicular to the surfaces of the pair of cooling parts such that the pair of cooling parts communicate with each other
Implementation Method 2
a refrigerant flows through the cooling parts and cooling channels, absorbing heat from the capacitor and power module
Data Source
AI summary
The present disclosure provides a capacitor module including: a capacitor; a first housing having a hexahedron shape and having an inner space in which the capacitor is disposed, the first housing including a pair of cooling parts recessed inwards from a pair of parallel surfaces among outer side surfaces thereof such that a refrigerant flows, a pair of cooling channels disposed inside opposite side surfaces perpendicular to the surfaces of the pair of cooling parts such that the pair of cooling parts communicate with each other, and a through-hole configured to connect each of the cooling channels to the outside such that the refrigerant is introduced or discharged therethrough; and a cooling plate coupled to the first housing so as to seal the cooling parts.