Dielectric Cooling Circuit for High-Voltage Power Cell Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The conflict between thermal conductivity and electrical insulation in high-voltage power cells, particularly in motor vehicles, is unresolved due to the low thermal conductivity of ceramic insulating bodies, which hinders effective heat dissipation in high-power components.
Innovation Solution
A cooling arrangement using a cooling fluid with electrically insulating properties, such as a dielectric medium, directly connected to power cells and power conductors, allowing for direct thermal connection and electrical insulation, with fluid paths following the electrical power path for enhanced cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ceramic insulating bodies are used to connect electrical components to the cooling fluid circuit, then electrical insulation is achieved, but thermal conductivity is insufficient leading to poor heat dissipation
Solution Approach 1:
The patent extracts the insulating function from the thermal conduction path by introducing a separate insulating component (insulating collar or insulating bushing) that only provides electrical isolation. This allows the thermal connection to be made through highly conductive materials while the insulating component handles only the electrical isolation task, thereby resolving the contradiction between insulation and heat dissipation.
Solution Approach 2:
The patent introduces an intermediary insulating component (insulating collar or insulating bushing) that mediates between the conductive thermal path and the requirement for electrical insulation. This intermediary element provides the necessary electrical isolation without impeding the thermal conduction, as it is positioned to isolate only the electrical connection while allowing thermal contact through other paths.
2Power
If high-voltage power cells are used to provide required power, then power output is increased, but dissipation power density increases requiring more effective cooling
Solution Approach 1:
The patent segments the cooling system into multiple independent cooling channels that can be individually optimized. By dividing the cooling fluid circuit into separate channels for different power cells or regions, the system can provide targeted cooling to high-dissipation areas without requiring a complete redesign of the entire cooling system, thus managing the increased dissipation power density effectively.
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
Achieves improved thermal connection and electrical insulation, enabling effective heat dissipation in high-power components with high-voltage applications, optimizing cooling efficiency and maintaining electrical safety.
Implementation Method 1
the cooling fluid is a cooling medium having electrically insulating properties, in particular a dielectric medium
Implementation Method 2
achieves improved thermal connection and electrical insulation, enabling effective heat dissipation
Data Source
AI summary
A cooling arrangement for cooling at least one power cell, in particular of a motor vehicle, includes a power cell and a cooling fluid circuit, wherein the power cell is directly electrically connected to at least one power conductor of an electric power supply, wherein a cooling fluid circulates in the cooling fluid circuit, wherein the cooling fluid circuit is fluidly connected to the power cell and/or the power conductor, and wherein the cooling fluid is a cooling medium having electrically insulating properties, in particular a dielectric medium.