Dielectric Fluid Cooling Layout for Uniform Battery Cell Temperatures
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Solution Overview
Problem
Temperature-regulating devices for electrical and electronic components, such as those in motor vehicles, often suffer from irregular cooling due to high thermal resistance and non-homogeneous cooling distribution, leading to decreased performance.
Innovation Solution
A temperature-regulating device with a housing that uses a dielectric fluid circulated through a heat exchanger and a distribution system with variable cross-section ducts and spraying orifices to ensure homogeneous cooling of electrical and electronic components, where the dielectric fluid is cooled by a heat-transfer fluid and distributed efficiently along the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat exchanger with a dielectric fluid tank and pump is used to cool battery elements, then heat exchange between battery elements and dielectric fluid is assured, but the storage cells positioned furthest from the intake are less well cooled than those closest to the intake, resulting in non-homogeneous cooling
Solution Approach 1:
The dielectric fluid distribution system is segmented into multiple outlets positioned at different locations within the housing, with each outlet serving a specific zone of battery elements. This segmentation ensures that all battery elements, regardless of position, receive cooled dielectric fluid uniformly, resolving the non-homogeneous cooling issue.
Solution Approach 2:
The system provides localized cooling by positioning dielectric fluid outlets in specific locations within the housing, ensuring that each region of battery elements receives appropriate cooling. This local quality approach addresses the varying cooling needs of battery elements at different positions.
2Loss of energy
If a dielectric fluid circulates around electrical storage cells in the housing, then cooling is provided to the components, but the components furthest from the dielectric fluid intake are less well cooled, decreasing global performance
Solution Approach 1:
The distribution system is divided into multiple outlets positioned throughout the housing, ensuring that heat dissipation is evenly distributed across all battery elements. This prevents energy loss concentration in specific zones and maintains optimal system performance.
Solution Approach 2:
The system ensures continuous and uniform cooling action across all battery elements by strategically positioning multiple dielectric fluid outlets. This continuous useful action maintains optimal temperature across the entire battery pack, preserving system performance.
3Temperature
If heat exchangers with cooling fluid circulation are used to cool battery cells, then temperature regulation is achieved, but thermal resistance is high due to material thicknesses between cooling fluid and battery cells
Solution Approach 1:
The system extracts the dielectric fluid directly into the housing where battery elements are located, eliminating intermediate material layers between the cooling fluid and battery cells. This direct contact approach minimizes thermal resistance while maintaining effective temperature control.
Solution Approach 2:
The dielectric fluid acts as an intermediary that directly contacts both the heat exchanger and the battery elements, facilitating efficient heat transfer. This intermediary approach reduces thermal resistance by eliminating unnecessary material barriers.
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
The solution ensures uniform cooling of all electrical and electronic components, preventing less efficient cooling of components farther from the fluid intake and improving the overall performance and efficiency of the temperature-regulating system.
Implementation Method 1
a heat exchanger through which the dielectric fluid can pass, and a heat-transfer fluid, with the heat exchanger comprising at least one dielectric fluid input and one dielectric fluid output
Implementation Method 2
the dielectric fluid, which is put into motion and cooled before its return to the housing, can also circulate in the interior of the housing around electrical storage cells
Data Source
AI summary
A temperature-regulating device for electronic or electrical components which can release heat when in operation is disclosed. The temperature-regulating device includes a housing which is configured to accommodate the electrical or electronic components. The temperature-regulating device also includes means for regulating the temperature of the components with a dielectric fluid which is able to immerse the components at least partly. The temperature-regulating means include firstly a heat exchanger through which the dielectric fluid can pass and a heat transfer fluid. The heat exchanger includes at least one dielectric fluid input and one dielectric fluid output. The temperature regulating means further includes a system for distribution of the dielectric fluid which is positioned at the dielectric fluid output of the heat exchanger and at least two dielectric fluid spraying orifices.