Bent Trap Battery Module Venting for Thermal Runaway Containment
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Solution Overview
Problem
Conventional battery modules fail to effectively contain high-temperature byproducts generated during thermal runaway, leading to secondary damage and fire outbreaks when these byproducts are discharged externally.
Innovation Solution
A battery module design featuring a bent trap portion with a first and second trap portion and air circulation channels that redirect and contain venting gas and byproducts internally, preventing external discharge and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air circulation channels are provided for cooling battery cells, then cooling efficiency is improved, but high-temperature byproducts are discharged to the outside causing secondary damage
Solution Approach 1:
The air circulation system is segmented into separate channels: a first air circulation channel for introducing air to cool battery cells, and a second air circulation channel for discharging air. This segmentation allows independent control of cooling function and byproduct discharge function, preventing harmful byproducts from being discharged through the cooling channel.
Solution Approach 2:
A trap portion is introduced as an intermediary component between the battery cells and the air outlet. This trap portion captures and retains high-temperature byproducts generated during thermal runaway, preventing them from being discharged to the outside while still allowing the air circulation system to function for cooling purposes.
2Device complexity
If a simple air inlet and air outlet structure is used, then device complexity is reduced, but ability to contain byproducts is insufficient
Solution Approach 1:
The trap portion extends in the height direction (vertical dimension) within the module case, creating a three-dimensional containment space. This vertical extension allows the trap portion to effectively capture byproducts without requiring complex horizontal arrangements, maintaining relative structural simplicity while improving byproduct containment capability.
Solution Approach 2:
The trap portion is nested within the module case structure, utilizing the existing spatial framework. The first and second air circulation channels are integrated into the module case with the trap portion positioned between them, creating a nested configuration that improves byproduct containment without significantly increasing overall device complexity.
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 prevents secondary damage by containing high-temperature byproducts and venting gas within the module, thereby improving safety and reducing the risk of fire outbreaks.
Implementation Method 1
a module case configured to receive the plurality of battery cells and the busbar, wherein the module case includes a receiving portion configured to define a predetermined space, a first trap portion configured to introduce air, a second trap portion configured to discharge air, and an air flow channel portion configured to allow the introduced air to move between the first trap portion and the second trap portion
Data Source
AI summary
A battery module includes a plurality of battery cells, a busbar configured to electrically connect the plurality of battery cells to each other, and a module case configured to receive the plurality of battery cells and the busbar, wherein the module case includes a receiving portion configured to define a predetermined space, a first trap portion configured to introduce air, a second trap portion configured to discharge air, and an air flow channel portion configured to allow the introduced air to move therealong, and a battery pack including the same.