Battery Cell Fire Barrier With Preemptive Extinguishing Release
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Solution Overview
Problem
Conventional battery fire extinguishing devices only discharge fire extinguishing substances after detecting a fire, which can lead to radiant heat transfer between overheated batteries, causing extensive explosions and flames.
Innovation Solution
A battery extinguishing device featuring a fire extinguishing unit with heat-blocking portions made of aluminum, designed to block radiant heat transfer and suppress battery fires by releasing fire extinguishing substances before flames occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional battery fire extinguishing devices discharge fire extinguishing substances only after detecting a fire, then the device structure is simple, but radiant heat transfers between overheated batteries causing extensive explosions and flames
Solution Approach 1:
The heat blocking portion is installed between battery cells in advance, and fire extinguishing portions are pre-filled with fire extinguishing substances. When overheating occurs, the heat blocking portion immediately blocks radiant heat transfer, and fire extinguishing substances are discharged before flames can spread, preventing extensive explosions rather than just responding to detected fires
Solution Approach 2:
The heat blocking portion acts as an intermediary element between battery cells, physically blocking radiant heat transfer. This intermediary structure prevents direct thermal coupling between adjacent batteries, thereby stopping the chain reaction of thermal runaway while maintaining a relatively simple overall device structure
2Reliability
If heat blocking portions are added to block radiant heat transfer, then fire suppression effectiveness improves, but device complexity increases
Solution Approach 1:
The heat blocking portion is designed as a thin film or sheet structure that can be easily inserted between battery cells. This thin-film approach provides effective radiant heat blocking without adding significant bulk or structural complexity to the battery pack design
Solution Approach 2:
The heat blocking portions are divided into multiple segments, with each segment positioned between adjacent battery cells. This segmentation allows the heat blocking function to be distributed throughout the battery pack, providing comprehensive protection while keeping each individual component simple and easy to install
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 radiant heat transfer between overheated batteries and suppresses battery fires by releasing fire extinguishing substances proactively, preventing extensive explosions and flames.
Implementation Method 1
a battery that has not started a flame but has been overheated may generate radiant heat, which may be transferred to surrounding batteries
Implementation Method 2
a plurality of fire extinguishing portions provided on one side of the body and configured to accommodate a fire extinguishing substance that vaporizes by heat
Implementation Method 3
A side of the heat blocking portion facing the plurality of battery cells may be blackened to absorb transferred heat
Data Source
AI summary
A battery extinguishing device is provided. The battery extinguishing device includes a fire extinguishing unit including a body having a sheet shape and provided between a plurality of battery cells and a plurality of fire extinguishing portions provided on one side of the body and configured to accommodate a fire extinguishing substance that vaporizes by heat, and a heat blocking portion made of aluminum provided on the body opposite the plurality of fire extinguishing portions and configured to block heat transfer from the plurality of battery cells.