Cooling Pin Fixing Protrusions Battery Module Vibration
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Solution Overview
Problem
Battery modules used in devices exposed to external impact and vibration experience loosening of the coupling force between battery cells and cooling pins, leading to electrical disconnection due to separation of battery cells.
Innovation Solution
A battery module design featuring a cooling pin with fixing protrusions that are locally inserted into the battery case, providing a secure coupling force against external impacts and vibrations, and preventing electrical disconnection by distributing forces evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling pins are interposed between battery cells to dissipate heat, then heat dissipation efficiency is improved, but coupling force between battery cells and cooling pins loosens under external impact and vibration
Solution Approach 1:
Fixing protrusions are pre-formed on the cooling pin before assembly, and fixing holes are pre-formed on the battery case. During assembly, the protrusions insert into the holes to establish secure mechanical coupling before any vibration or impact occurs, preventing subsequent loosening
Solution Approach 2:
The cooling pin combines thermal conduction function with mechanical fixing function through composite structure - the plate-shaped cooling pin with fixing protrusions integrates heat dissipation capability with mechanical anchoring capability, creating a unified component that performs both functions simultaneously
2Temperature
If cooling pins are interposed between battery cells for heat dissipation, then thermal management is improved, but electrical disconnection occurs due to separation of battery cells under external impact
Solution Approach 1:
The fixing protrusions and holes are designed to create preliminary mechanical interlocking that prevents separation under external impact, thereby maintaining electrical connection stability before impact occurs
Solution Approach 2:
The cooling pin merges thermal management function with mechanical retention function - the same component that dissipates heat also serves as a mechanical anchor that prevents battery cell separation and maintains electrical connections under external impact and vibration
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 design effectively secures the coupling force between the cooling pin and battery cell, preventing electrical disconnection and ensuring safety during external impacts and vibrations.
Implementation Method 1
the cooling pin including a plurality of fixing protrusions that are disposed on an outer surface of the cooling pin and fixed in position with respect to the battery cell by being locally inserted into an outer surface of a battery case of a battery cell facing the cooling pin
Implementation Method 2
A large amount of heat generated from the battery cells 11 are transferred to the cooling pins 12 interposed between the battery cells 11 and then dissipated
Data Source
AI summary
Provided is a battery module including a battery cell laminate and a cooling pin. The battery cell laminate includes a plurality of battery cells are arranged adjacent to each other, each of the battery cells having a structure in which an electrode assembly is sealed together with an electrolytic solution, within a battery case. The cooling pin is interposed between the battery cells, the cooling pin having a plate-shaped structure and including a plurality of fixing protrusions that are locally inserted into an outer surface of the battery case of the battery cell that faces the cooling pin and fixed in position with respect to the battery cell.