Mobile Fire Extinguisher With Insertion Rod For EV Battery Packs
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Solution Overview
Problem
Existing fire suppression systems for electric vehicle battery fires require large amounts of firefighting water, leading to contamination of groundwater and soil, and struggle to stabilize batteries quickly due to the sealed nature of the battery pack.
Innovation Solution
A mobile fire extinguishing device with a nozzle tip rod that can be inserted into the battery pack using hydraulic/pneumatic pressure to inject firefighting water or agents directly into the pack, combined with a recovery system to manage pressure and prevent environmental pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If firefighting water is used to submerge the battery pack for stabilization, then the battery can be cooled and stabilized, but large amounts of water are required leading to environmental contamination
Solution Approach 1:
The fire suppression system is divided into multiple nozzle rods distributed across the battery pack structure. Each nozzle rod independently injects fire suppressant into specific battery modules, replacing the single large-volume water submersion approach with multiple targeted small-volume injections, thereby achieving effective cooling with minimal water usage and preventing environmental contamination
Solution Approach 2:
Instead of uniformly submerging the entire battery pack in water, the system applies fire suppressant locally to specific battery modules through individually positioned nozzle rods. This localized application targets the actual fire sources while minimizing overall water consumption and avoiding contamination of surrounding environment
2Strength
If the battery pack is sealed for protection, then the battery is protected from external shocks, but fire suppressant cannot be effectively applied to the battery interior
Solution Approach 1:
The nozzle rods are nested within the battery pack structure itself, with nozzles positioned inside the sealed battery modules. This integration allows the fire suppression system to operate within the sealed environment without compromising the protective sealing, enabling direct injection of suppressant into the battery interior while maintaining structural protection
Solution Approach 2:
The nozzle rods serve as intermediaries that penetrate the sealed battery pack structure to deliver fire suppressant from the external suppression system into the sealed battery interior. These intermediaries maintain the sealed protective environment while enabling effective suppressant application by creating controlled access pathways
3Reliability
If a temporary water tank is prepared to contain the vehicle and submerge the battery, then the battery can be stabilized, but the amount of firefighting water required is significantly reduced only compared to previous methods
Solution Approach 1:
The fire suppression approach is segmented into multiple localized injection points throughout the battery pack, replacing the need for large-volume water containment tanks. Each nozzle rod delivers a small amount of suppressant directly to fire-affected areas, achieving effective stabilization with dramatically reduced total water consumption compared to both traditional submersion and temporary tank methods
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
Enables rapid stabilization of electric vehicle batteries with minimal water usage, preventing further explosions and reducing environmental impact by efficiently injecting and recovering firefighting agents.
Implementation Method 1
a hydraulic/pneumatic cylinder (40) installed inside the mobile vehicle body (20) to vertically move the nozzle tip rod (30) by receiving hydraulic/pneumatic pressure
Implementation Method 2
a hydraulic/pneumatic cylinder (40) installed inside the mobile vehicle body (20) to vertically move the nozzle tip rod (30) by receiving hydraulic/pneumatic pressure
Implementation Method 3
having a plurality of nozzles (31) formed on the side surface inserted into the battery pack, to inject firefighting water or a fire extinguishing agent supplied through the connection terminal
Data Source
AI summary
The present disclosure relates to a fire extinguishing device and system for suppression of electric vehicle battery fire and, more specifically, to a fire extinguishing device and system wherein in the event of a fire caused by a battery of an electric vehicle, the fire extinguishing device is moved to a space under the electric vehicle, a nozzle tip rod protrudes upward such that a part of the nozzle tip rod is inserted into the battery pack mounted on the bottom of the vehicle, and then firefighting water or a fire extinguishing agent is injected and charged into a space inside the battery pack, thereby quickly stabilizing the battery and preventing additional fires caused by battery explosion.