Battery Enclosure Fire Suppression With Pressure Relief Venting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Firefighting in power storage systems poses risks to personnel due to toxic gases and obscured visibility, and existing fire control methods are inadequate in quickly reducing damage and ensuring safety during fire extinguishing processes.
Innovation Solution
A fire control device comprising a sealed box with a pressure relieving check valve, a fire extinguishing check valve, and a fire extinguisher, along with an image recognition assembly for automatic fire detection and extinguishing, isolates personnel from the fire and automatically triggers the fire extinguisher to relieve pressure and reduce temperature, ensuring safety and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If personnel manually perform fire-fighting work on the power storage system, then the fire can be extinguished, but personnel may be injured by fire, toxic gases, or smoke
Solution Approach 1:
The patent introduces a fire extinguishing device as an intermediary between the fire source and personnel. The device includes a fire extinguishing agent storage tank, nozzle, and control system that automatically detects fire conditions and discharges extinguishing agents through a sealed enclosure, eliminating the need for personnel to directly confront the fire and toxic gases
Solution Approach 2:
The fire extinguishing system is designed with automatic detection and activation capabilities. The control system automatically detects fire conditions through sensors and triggers the fire extinguishing device without requiring manual intervention, enabling the system to protect itself and surrounding areas autonomously
2Object-affected harmful factors
If the box is sealed to isolate personnel from fire, then personnel safety is improved, but pressure builds up inside the box due to fire
Solution Approach 1:
A pressure relief valve is introduced as an intermediary component between the sealed box interior and exterior environment. The valve remains closed during normal operation to maintain sealing but automatically opens when internal pressure exceeds a predetermined threshold, releasing excess pressure while maintaining overall enclosure integrity
Solution Approach 2:
The pressure relief valve changes its operational state based on pressure parameter variations. When internal pressure exceeds the preset threshold, the valve transitions from closed to open state, allowing pressure equalization. After pressure normalization, the valve automatically returns to closed state to maintain sealing
3Productivity
If the fire extinguisher is automatically triggered by the pressure relieving check valve, then fire extinguishing speed is improved, but the fire extinguisher may activate falsely due to pressure changes not related to fire
Solution Approach 1:
The control system incorporates multiple feedback mechanisms including temperature sensors, smoke detectors, and pressure sensors that continuously monitor conditions inside the box. The system cross-validates signals from multiple sensors before triggering the fire extinguishing device, ensuring activation only occurs when genuine fire conditions are detected
Solution Approach 2:
The system performs preliminary detection and verification actions before triggering fire extinguishing. Temperature and smoke sensors continuously monitor conditions, and the control system analyzes patterns over time to distinguish between normal pressure variations and fire-induced pressure changes, preventing false activation
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 solution effectively isolates personnel from the fire, prevents explosions by relieving pressure, and automatically initiates fire extinguishing, reducing damage to the power storage system and ensuring personnel safety without direct exposure to hazardous conditions.
Implementation Method 1
a state of the pressure relieving check valve is switch between a first open state and a first closed state according to a pressure difference between the inside and the outside of the box
Implementation Method 2
The fire extinguisher is switched between a starting mode and a stopping mode according to the state of the pressure relieving check valve
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A fire control device for a power storage system, which comprises a box, a power wire, a pressure relieving check valve, a fire extinguishing check valve and a fire extinguisher. The box is configured to accommodate a battery system, a power receiving end of the power wire is configured to couple to the battery system, and the power output end of the power wire is outside the box. The pressure relieving check valve extends through the box, and a first input end and a first output end of the pressure relieving check valve are respectively located outside the box and inside the box, and a state of the pressure relieving check valve is switched between an open state and a closed state according to a pressure difference between an inside of the box and an outside of the box. The fire extinguishing check valve extends the box, and a second input end and a second output end of the fire extinguishing check valve are respectively located outside and inside the box. A state of the fire extinguishing check valve is switched between an open state and a close state according to a pressure difference between the inside and the outside of the box. The fire extinguisher is disposed in the box and is connected to the pressure relieving check valve. The fire extinguisher is switched between a starting mode and a stopping mode according to the state of the pressure relieving check valve.