Extruded Battery Cooling Fin for Replaceable Cylindrical Cells
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Solution Overview
Problem
Conventional battery cooling methods, such as water-cooling or air-cooling, are not suitable for replaceable batteries as they require replacing cooling fluid lines along with the battery, leading to inefficiencies and safety concerns due to heat buildup during charging or discharging, which can cause performance deterioration or even ignition/explosion.
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 that contact the battery housing, along with a thermally conductive interface material, to enhance heat dissipation without the need for ancillary cooling devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water-cooling or air-cooling method is adopted, then cooling effect is achieved, but cooling fluid line must be replaced together with battery
Solution Approach 1:
The invention extracts the cooling function from the battery pack assembly by using independent cooling fins that can be separated from the battery cells. The cooling fins are designed to contact only specific portions of the battery cells, allowing the cooling component to be independently replaced without replacing the entire battery pack or cooling fluid lines.
Solution Approach 2:
The cooling system is segmented into independent cooling fins that can be separately installed and replaced. Each cooling fin is a discrete component that contacts specific battery cell portions, enabling modular replacement of cooling components without affecting the entire battery assembly or cooling fluid infrastructure.
2Reliability
If cooling fin contacts entire battery cell surface, then thermal conductivity increases, but manufacturing precision requirement increases
Solution Approach 1:
The cooling fin is designed to contact only specific local portions of the battery cells rather than the entire surface. The contact portions are strategically positioned on the battery cells, allowing effective heat dissipation while reducing the precision requirements for manufacturing and assembly compared to full-surface contact designs.
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 for replaceable batteries in small electric vehicles and two-wheeled vehicles, ensuring stable operation and safety by uniformly dissipating heat across the battery cells, reducing temperature differences, and eliminating the need for additional cooling devices, thereby reducing costs.
Implementation Method 1
a battery cooling fin contacting side surfaces of cylindrical battery cells to increase thermal conductivity
Data Source
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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.