ESS Gas Venting and Fire Suppression for Thermal Propagation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fire prevention systems in energy storage systems (ESS) fail to detect and address flammable gases emitted by lithium-ion batteries before they lead to overheating and potential fires, missing early detection opportunities and potentially allowing dangerous conditions to develop.
Innovation Solution
A fire hazard detection and suppression system that includes a gas detection system to vent flammable gases and a smoke and temperature detection system to activate a fire suppression system only when both smoke and elevated temperature are detected, preventing unnecessary activation of fire suppressants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fire suppression system is activated based on gas concentration alone, then early fire prevention is improved, but unnecessary suppression activation increases
Solution Approach 1:
The system performs preliminary detection of flammable gases and opens vents to release them before fire conditions develop. This preliminary action prevents the need for fire suppression while still addressing the early warning of potential hazards, thereby avoiding unnecessary suppressant activation.
Solution Approach 2:
The system dynamically adjusts its response based on the combination of detected conditions. It requires both gas concentration threshold exceedance AND fire condition detection (smoke, flame, or high temperature) to activate suppression, creating a dynamic decision-making process that adapts to actual hazard levels.
2Object-generated harmful factors
If multiple detection conditions are required for fire suppression activation, then false activation is reduced, but response time to actual fires may increase
Solution Approach 1:
The system continuously monitors gas concentrations and maintains readiness to suppress. When gas thresholds are exceeded, it opens vents and prepares suppression systems, so that when actual fire conditions are detected, the response can be immediate rather than requiring full system initialization.
Solution Approach 2:
The system uses feedback from multiple sensors (gas concentration, smoke, temperature, flame detectors) to continuously assess fire risk. This feedback loop allows the system to maintain an informed state about potential hazards and respond rapidly when conditions warrant suppression activation.
3Reliability
If gas detection and venting systems are added to existing fire suppression systems, then early hazard detection is improved, but system complexity increases
Solution Approach 1:
The patent combines gas detection, vent control, and fire suppression systems into an integrated safety system. The controller coordinates all functions, sharing sensors and control logic across gas monitoring and fire suppression operations, thereby managing complexity through unified system architecture rather than separate independent systems.
Solution Approach 2:
The system employs multi-functional sensors and controllers that serve both gas detection and fire suppression functions. For example, the same controller manages both vent operations and suppression activation, and temperature sensors serve both HVAC control and fire detection purposes, reducing overall system complexity through component multi-functionality.
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
This system effectively detects and vents flammable gases, terminating battery charging and discharging when gas concentrations exceed thresholds, and activates fire suppression only when both smoke and elevated temperatures are present, thereby preventing fires and reducing unnecessary fire suppressant activation.
Implementation Method 1
a gas sensor to detect a concentration of flammable gas within the container
Implementation Method 2
a smoke detector to detect a presence of smoke within the container
Implementation Method 3
a temperature sensor to detect an elevated temperature within the container
Implementation Method 4
open a vent to release the flammable gas from the container
Data Source
AI summary
An energy storage system (ESS) deflagration and thermal propagation mitigation method and corresponding systems prevent and, if necessary, suppress fires in ESS containers. The method uses a gas detection system, a smoke and temperature detection system, and a fire suppression system. The gas detection system opens a vent in response to detecting a concentration of gas that meets or exceeds a threshold concentration. If needed after venting the container, the smoke and temperature detection system closes the vent and activates the fire suppression system in response to detecting both the presence of smoke and a temperature that meets or exceeds a threshold temperature.