Energy Storage System Fire Detection Sensing Line
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Solution Overview
Problem
Energy storage systems face challenges in accurately detecting fire occurrences and effectively extinguishing fires due to their high capacity and output, which complicates fire suppression.
Innovation Solution
An energy storage system is equipped with a sensing line made of twisted steel wires coated with temperature-sensitive materials, connected to a controller and shunt resistor, allowing for precise detection of temperature changes and automatic injection of a fire extinguishing agent when a fire is sensed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery cells are arranged in high capacity and high output configuration, then energy storage capability is improved, but fire safety and detection difficulty worsen
Solution Approach 1:
The battery system is divided into multiple modules, each module containing multiple battery cells arranged in trays within racks. This segmentation allows for localized fire detection and suppression, improving overall safety while maintaining high energy storage capacity across the entire system.
Solution Approach 2:
A sensing line acts as an intermediary detection mechanism between the battery cells and the control system. The sensing line detects temperature changes and fire events in real-time, enabling early warning and prompt fire suppression before fires spread throughout the high-capacity battery system.
2Device complexity
If traditional fire detection methods are used, then system complexity is reduced, but fire detection accuracy and response time worsen
Solution Approach 1:
Traditional mechanical or electronic point detectors are replaced with a continuous sensing line that runs through the battery modules. This sensing line uses temperature-sensitive materials that change electrical properties in response to heat, providing continuous spatial temperature monitoring with high precision without requiring complex electronic detection systems.
3Measurement precision
If sensing line with temperature sensitive material is used, then fire detection precision is improved, but device complexity and installation difficulty worsen
Solution Approach 1:
The sensing line utilizes temperature-sensitive materials whose electrical resistance changes with temperature. This parameter change allows the sensing line to detect fire conditions through simple electrical measurements, achieving high detection precision while keeping the system relatively simple and easy to integrate with existing battery module structures.
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 system enables accurate detection of fire locations and timely application of fire extinguishing agents, preventing the spread of fires and potential explosions within the energy storage modules.
Implementation Method 1
a sensing line formed along one side of the plurality of modules, respectively... the sensing line may be configured as a constant-temperature sensing linear sensor... the sensing line may have a wiring structure formed by twisting a steel wire coated with a temperature sensitive material
Data Source
Figure 1
Figure 2~3
Figure 4A
AI summary
The present disclosure provides an energy storage system capable of accurately detecting a module where an event has occurred and injecting a fire extinguishing agent. As an example, disclosed is an energy storage system comprising: a rack having a space inside; a plurality of modules accommodated in the rack and including a plurality of battery cells arranged in one direction therein; and a sensing line formed along one side of the plurality of modules.