Battery Module Cell Layout With Rupture Cooling for Flame Blocking
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Solution Overview
Problem
Conventional battery modules face issues with flame propagation and thermal runaway due to ignition in a battery cell, posing safety risks for users and damaging the module or pack.
Innovation Solution
A battery module design with alternating battery cell orientations and a cooling member between cells, featuring a ruptureable accommodation portion with cooling material to extinguish flames and prevent heat propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery cells are arranged in a conventional stacked configuration, then the battery module structure is simple and easy to manufacture, but flame easily propagates from one battery cell to adjacent battery cells causing thermal runaway
Solution Approach 1:
The battery module is divided into multiple independent battery cell groups, with each group surrounded by partition walls. These partition walls create physical separation between battery cells, preventing flame from propagating from one cell to another. The segmentation isolates potential fire sources within individual compartments while maintaining the overall battery module functionality.
Solution Approach 2:
Partition walls are introduced as intermediary structures between adjacent battery cells. These partition walls act as fire barriers that intercept and block flame propagation paths. The partition walls are positioned strategically to prevent direct flame contact between battery cells while allowing thermal management and electrical connections to function.
2Reliability
If cooling members are added between battery cells to prevent flame propagation, then flame spread is blocked, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The partition walls serve multiple functions simultaneously: they act as fire barriers to block flame propagation, provide structural support for battery cell positioning, and facilitate thermal management by creating channels for cooling airflow. This multi-functionality reduces the need for separate components and simplifies the overall manufacturing process despite the added safety features.
Solution Approach 2:
The partition wall structure is integrated with the cooling member design, combining fire prevention and thermal management functions into a single unified component. The partition walls are designed to work in conjunction with cooling channels, merging what would traditionally be separate systems into one integrated structure that simplifies assembly while maintaining both safety and thermal control functions.
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
Effectively blocks and extinguishes flames, prevents flame spread, and prevents thermal runaway, enhancing the stability and safety of battery modules and packs.
Implementation Method 1
a cooling member disposed between the plurality of battery cells
Implementation Method 2
a ruptureable accommodation portion configured to rupture when a flame ignites in the battery cell, and a cooling material accommodated in the accommodation portion
Data Source
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AI summary
Disclosed is a battery module, and a battery pack and a vehicle including the same. The battery module includes a battery cell stack in which a plurality of battery cells are stacked; a case in which the battery cell stack is accommodated; and a cooling member disposed between the plurality of battery cells, wherein the battery cells include a first battery cell having electrode leads respectively formed at both sides thereof, and a second battery cell having both electrode leads formed at one side thereof.