Extruded Cooling Fin Between Cylindrical Cells for Replaceable Batteries
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Solution Overview
Problem
Conventional battery cooling methods, such as water-cooling and air-cooling, are not suitable for replaceable batteries as they require replacing cooling fluid lines along with the battery, which is inconvenient and inefficient.
Innovation Solution
A battery cooling fin with excellent thermal conductivity, designed as an extruded material to be inserted between cylindrical battery cells, featuring contact grooves and support portions to enhance thermal conductivity and support the battery cells, allowing for efficient cooling without the need for ancillary cooling devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water-cooling or air-cooling methods are used for battery cooling, then cooling performance is improved, but device complexity increases and ease of operation deteriorates due to the need to replace cooling fluid lines with the battery
Solution Approach 1:
The cooling fin is integrated directly into the battery pack structure, merging the cooling function with the battery housing. This eliminates the need for separate cooling fluid lines and external cooling devices, thereby reducing device complexity while maintaining effective cooling performance through direct thermal contact with battery cells
Solution Approach 2:
The cooling fin serves multiple functions: it acts as both a structural support element within the battery pack and a thermal management component. By contacting side surfaces of multiple battery cells simultaneously, it provides universal cooling across different cell positions without requiring separate cooling lines for each cell
2Temperature
If water-cooling or air-cooling methods are used for battery cooling, then cooling performance is improved, but ease of operation deteriorates due to the need to replace cooling fluid lines
Solution Approach 1:
The cooling function is extracted from the external cooling system (fluid lines) and embedded directly into the battery pack structure through integrated cooling fins. This allows the battery to be replaced as a complete unit without requiring separate replacement of cooling lines, significantly improving ease of operation
Solution Approach 2:
The cooling fin is designed to automatically contact and cool battery cells through its inherent structural position within the battery pack. No external cooling fluid lines or active cooling systems are needed—the structure itself provides the cooling function, making the system self-sufficient and easier to operate
3Reliability
If cooling fins are designed with contact grooves and support portions, then thermal conductivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
Contact grooves are selectively formed only in specific regions of the cooling fin where direct contact with battery cells is required, rather than across the entire surface. This localized approach ensures reliable thermal contact at critical points while reducing overall manufacturing precision requirements and simplifying the manufacturing process
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 cooling performance for replaceable batteries in small electric vehicles and two-wheeled vehicles, reducing costs and ensuring stable battery performance without the need for additional cooling devices.
Implementation Method 1
a battery cooling fin for cooling cylindrical battery cells... contacting side surfaces of cylindrical battery cells to increase thermal conductivity
Data Source
AI summary
The present disclosure relates to a battery cooling fin, and more particularly, to a battery cooling fin for cooling cylindrical battery cells. The present disclosure provides a battery cooling fin and a battery cooling system including the same, the battery cooling fin being a cooling fin that is an extruded material to be inserted between cylindrical battery cells while having excellent thermal conductivity, to provide a replaceable battery applied to a small electric vehicle or a two-wheeled vehicle.