Battery Module Cooling Fin with External Fitting Groove
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Solution Overview
Problem
Lithium secondary batteries face challenges in effective cooling due to their dense arrangement in battery modules, which can lead to reduced performance and efficiency in larger devices.
Innovation Solution
A battery module design featuring a stack of secondary batteries with integrated cooling fins and a cooling channel, where the fins have a contact part and a fitting part that extend to the exterior, and a fastening mechanism to secure the cooling channel, allowing for efficient heat transfer without the need for thermal interface materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If secondary batteries are densely arranged in a narrow space to improve capacity and output, then battery capacity and output are improved, but cooling performance deteriorates
Solution Approach 1:
The cooling fin extends in the stack direction (vertical dimension) rather than only in the horizontal plane, utilizing the third dimension to increase cooling surface area without expanding the horizontal footprint of the battery module
Solution Approach 2:
The cooling system is segmented into multiple cooling fins that contact different secondary batteries in the stack, allowing distributed heat dissipation across multiple contact points rather than a single centralized cooling solution
2Temperature
If cooling fins are added to improve cooling performance, then thermal contact area is increased, but device complexity increases
Solution Approach 1:
The cooling fin integrates multiple functions into a single component: it provides thermal contact with secondary batteries, extends to the exterior for heat dissipation, and includes fitting parts that mechanically connect to the cooling channel and secondary batteries, eliminating the need for separate thermal interface materials
Solution Approach 2:
The cooling fin serves multiple purposes simultaneously: it acts as a thermal conductor, a structural support element, a mechanical connector, and a heat dissipation surface, reducing the need for additional specialized components
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
This design enhances the cooling performance of secondary batteries by increasing the thermal contact area and reducing costs associated with thermal interface materials, thereby improving the overall efficiency and reliability of battery modules in larger devices.
Implementation Method 1
at least one cooling fin having a contact part arranged to contact at least one of the secondary batteries... This design enhances the cooling performance of secondary batteries by increasing the thermal contact area
Data Source
AI summary
A battery module is provided. The battery module includes a battery stack that has a plurality of secondary batteries stacked on each other in multiple stages along a predetermined stack direction. Additionally, the battery module includes at least one cooling fin which has a contact part disposed to contact at least one of the secondary batteries and a fitting part that extends from the contact part to expose at least a portion of the fitting part to the exterior of the battery stack. A cooling channel which has at least one fitting groove is provided and the fitting part is fitted into the fitting groove.