Battery Module Cooling Fin Fastening for Uniform Heat Dissipation
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Solution Overview
Problem
As battery modules and packs evolve with increased capacity and reduced height, conventional heat conductive pads fail to evenly distribute contact resistance, leading to decreased cooling efficiency and potential collisions between the battery module and heat sink during vibration.
Innovation Solution
A battery module design featuring a cooling fin with a heat conductive plate, a heat radiating part, and fastening parts that securely attach to a heat sink via through holes, ensuring close contact and reduced contact resistance, along with a frame member for structural integrity and improved heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If only a heat conductive pad is used between the cooling fin and heat sink, then the structure is simple, but the contact resistance is unevenly distributed and cooling efficiency decreases
Solution Approach 1:
The cooling fin is divided into multiple segments along its length direction, with each segment having independent fastening parts that can be fastened to the heat sink at different positions. This segmentation allows for even distribution of contact resistance across the entire contact surface, improving cooling efficiency while maintaining structural feasibility.
2Reliability
If the contact area between cooling fins and heat sink is increased to reduce contact resistance, then heat transfer improves, but the structure becomes more complex and manufacturing difficulty increases
Solution Approach 1:
Fastening parts are pre-formed on the cooling fin structure at predetermined positions along the length direction. These pre-positioned fastening parts guide the assembly process and ensure proper alignment with the heat sink, simplifying the manufacturing process while achieving even contact resistance distribution across the enlarged contact area.
3Ease of manufacture
If the battery module is placed on the heat sink without direct coupling, then assembly is easier, but collisions occur during vibration
Solution Approach 1:
The cooling fin is merged with the battery module structure through integral formation, and the fastening parts on the cooling fin are directly fastened to the heat sink. This merging creates a unified structure where the battery module and heat sink are firmly coupled, preventing collisions during vibration while maintaining assembly feasibility through the standardized fastening process.
4Ease of manufacture
If fastening parts are formed only at the ends of the cooling fin, then manufacturing is simpler, but contact resistance distribution is uneven
Solution Approach 1:
Fastening parts are strategically distributed at multiple positions along the length direction of the cooling fin, including both ends and intermediate positions. This local distribution of fastening parts ensures even contact pressure and uniform heat transfer across the entire contact surface between the cooling fin and heat sink, improving overall thermal management effectiveness.
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 cooling efficiency by uniformly cooling battery cells and preventing collisions between the battery module and heat sink, ensuring stable operation and efficient heat dissipation.
Implementation Method 1
a cooling fin including a heat conductive plate disposed between neighboring battery cells and being in contact with the battery cells
Implementation Method 2
a heat sink which is in contact with the heat radiating part of the cooling fin
Implementation Method 3
a heat sink which is in contact with the heat radiating part of the cooling fin
Data Source
AI summary
Provided is a battery module, and more particularly, a battery module capable of improving cooling efficiency of battery cells and uniformly cooling the battery cells by reducing a contact resistance between a cooling fin and a heat sink, by allowing the cooling fin to be coupled and fixed to the heat sink so that the cooling fin which is in contact with the battery cell to conduct heat is in close contact with the heat sink for radiating the heat.