Radial Cooling Apparatus for Hybrid Vehicle Battery Cells
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Solution Overview
Problem
Electrochemical storage cells and double-layer capacitors in motor vehicles often fail due to inadequate cooling, leading to defects and reduced service lifetime.
Innovation Solution
A cooling apparatus is integrated with electrochemical storage cells and double-layer capacitors, featuring heat-conducting half shells and cooling walls with thermal insulation, allowing for efficient heat dissipation in the radial direction and ensuring reliable cooling, even during peak loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling apparatus is added to electrochemical storage cells, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The cooling apparatus is merged with the housing structure of the storage cell assembly. The housing serves dual functions as both structural enclosure and heat dissipation pathway, eliminating the need for separate cooling components and reducing overall device complexity while maintaining effective cooling.
Solution Approach 2:
The housing structure is designed to perform multiple functions simultaneously: mechanical protection of storage cells, structural support for the assembly, and thermal management through integrated cooling pathways. This multi-functionality reduces the number of separate components needed.
2Temperature
If radial cooling arrangement is used, then thermal contact surface is increased, but manufacturing complexity increases
Solution Approach 1:
The cooling apparatus is divided into modular segments that can be independently manufactured and then assembled. Each segment contacts a portion of the storage cell housing, allowing for simplified individual component manufacturing while achieving comprehensive radial thermal coverage when assembled.
Solution Approach 2:
The cooling structure is optimized with varying thermal conductivity and geometry at different locations based on local heat generation patterns. High-heat-generation areas receive enhanced cooling contact, while lower-heat areas use simpler cooling structures, optimizing manufacturing efficiency while maintaining effective thermal management.
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 provides effective thermal management, extending the service lifetime of the storage cells and capacitors by ensuring consistent and efficient cooling, while maintaining a modular and simple design with high packing density.
Implementation Method 1
a heat-conducting cooling apparatus 10, 20, 30 which, although electrically insulated from the at least one storage cell and/or the double-layer capacitor, is in thermal contact with a first circumferential section of the casing surfaces and dissipates heat energy introduced by the casing surfaces
Data Source
AI summary
A power supply device for a hybrid or electric motor vehicle, in particular a passenger vehicle or a motorcycle, includes a plurality of electrochemical storage cells and/or double-layer capacitors. The electrochemical storage cells and/or double-layer capacitors have a casing surface and, in an axial direction, a base surface and a cover surface which are connected by the casing surface, and each include electrodes. Adjacent to the casing surface of at least one of the storage cells and/or double-layer capacitors, a heat-conducting cooling apparatus is disposed which, although electrically insulated from the at least one storage cell and/or double-layer capacitor, is in thermal contact with a first circumferential section of the casing surface and dissipates the heat energy introduced by the casing surfaces of the at least one storage cell and/or the double-layer capacitor.