Power Converter Cooling Panel Thermal Management
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Solution Overview
Problem
The interior of power converters experiences high temperatures due to heat generation from electronic components, and heat from conductive wires connected to electric motors enters the converter, posing challenges for efficient cooling and heat management.
Innovation Solution
A cooling panel thermally connects the capacitor module and housing, and the AC connection bus bar to the housing, facilitating heat transfer from these components to the housing via the cooling panel, leveraging temperature gradients for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If electronic components and conductive wires are used in the power converter, then power conversion function is achieved, but heat is generated and accumulates in the housing
Solution Approach 1:
The patent extracts the heat management function from the housing structure by introducing a dedicated cooling panel. This cooling panel is thermally connected to heat-generating components (capacitor module and AC connection bus bar) and conducts heat away from the housing interior, effectively separating the power conversion function from heat accumulation.
Solution Approach 2:
The cooling panel acts as an intermediary thermal conduction path between the heat-generating components and the housing exterior. It provides a dedicated heat transfer route that mediates the thermal interaction, allowing heat to be efficiently conducted from the capacitor module and AC connection bus bar to the housing for dissipation.
2Productivity
If capacitor module is cooled efficiently, then power conversion performance is improved, but additional cooling structure is required
Solution Approach 1:
The patent merges the cooling function with the existing housing structure by integrating the cooling panel into the housing assembly. The cooling panel is positioned to contact the capacitor module and AC connection bus bar, combining thermal management with the structural housing to provide efficient cooling without adding separate complex cooling systems.
Solution Approach 2:
The cooling panel serves multiple functions: it provides thermal conduction path for heat removal, acts as a structural support element, and facilitates heat dissipation to the housing exterior. This multi-functionality reduces the need for additional dedicated cooling components, simplifying the overall system while improving power conversion performance.
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
This solution effectively transfers heat from the capacitor module and AC connection bus bar to the housing, where it is cooled by air or a cooling medium, thereby reducing internal temperatures and improving power conversion efficiency while minimizing external heat ingress.
Implementation Method 1
a cooling panel, an AC connection bus bar and the housing is thermally connected to each other by the cooling panel to release heat from the capacitor module and the AC connection bus bar to the housing via the cooling panel
Data Source
AI summary
In a power converter, cooling of the power converter is extremely important for improving a power conversion performance. Specifically, a DC smoothing capacitor module stored in a housing of the power converter is heat-sensitive, and in order to secure the performance, efficient cooling of the capacitor module is required. In addition, reducing the heat entering from the outside as much as possible is required.A conductor panel of the capacitor module and the housing are connected via a cooling panel, an AC connection bus bar and the housing is connected by the cooling panel to release heat from the capacitor module and the AC connection bus bar to the housing via the cooling panel.