Cooling Fin Battery Pack Layout for Pouch Cell Thermal Control
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Solution Overview
Problem
Existing battery pack cooling systems for electric aircraft do not effectively manage temperature optimization while minimizing space usage, which is crucial for maximizing range and extending battery life.
Innovation Solution
A battery pack cooling system that includes a cooling plate with extendable and retractable cooling fins, which are thermally connected to separation elements between pouch cells, allowing for enhanced cooling capacity when needed and efficient space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling system is added to the battery pack, then temperature regulation is improved, but space availability deteriorates
Solution Approach 1:
The cooling plate is integrated with the separation element to form a single unified component. The separation element serves dual functions: physically separating battery cells and providing a thermal conduction path for cooling. This merging eliminates the need for separate cooling components, thereby providing cooling functionality without consuming additional space within the battery pack.
Solution Approach 2:
The separation element is designed to perform multiple functions simultaneously: mechanical separation of battery cells, structural support, and thermal conduction for cooling. By making the separation element universal, the patent achieves temperature regulation without adding dedicated cooling components that would occupy valuable space in the compact battery pack design.
2Temperature
If cooling capacity is increased, then temperature regulation is improved, but device complexity increases
Solution Approach 1:
The cooling plate incorporates multiple discrete cooling fins that can be individually configured and positioned. These fins segment the cooling function into distributed thermal conduction paths throughout the battery pack, allowing effective temperature regulation across multiple cell locations without requiring a complex centralized cooling system.
Solution Approach 2:
The cooling fins are designed with variable geometry, featuring different lengths and positions that can be optimized for specific thermal requirements. This dynamic design allows the cooling system to adapt to different battery configurations and thermal loads, achieving effective cooling with a relatively simple structural implementation.
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 system effectively regulates battery pack temperature, optimizing cooling capacity and minimizing space usage, thereby enhancing the range and lifespan of electric aircraft batteries.
Implementation Method 1
a cooling plate, in thermal communication with the separation element and comprising at least a cooling fin
Data Source
AI summary
A system for battery pack cooling including a battery pack. The battery pack includes a plurality of pouch cells and a separation element, where the separation separates at least a first pouch cell of the plurality pouch cells from a second pouch cell of the plurality of pouch cells. The separation element contains a fluid. The system also includes a cooling plate, where the cooling plate is adjacent to the lower side of the battery pack. The cooling plate comprises at least a cooling fin, where the at least a cooling fin extends towards the separation element.