Battery Module Pipe Layout to Avoid Cell Vent Gas Damage
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Solution Overview
Problem
Existing fire extinguishing systems for energy storage systems struggle to effectively suppress high-pressure fires in battery modules due to increasing energy density of batteries, leading to challenges in extinguishing or suppressing fires with general fire suppression equipment.
Innovation Solution
A battery module and energy storage system design where a fire extinguishing conduit is positioned apart from the centers of battery cell vents in a horizontal direction, preventing conduit loss due to gas discharge and ensuring effective fire suppression by maintaining conduit integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fire extinguishing conduit is positioned close to the battery cell vents for effective fire suppression, then the fire suppression effectiveness is improved, but the conduit is lost due to high-temperature gas discharge through the vents
Solution Approach 1:
The patent resolves the contradiction by transitioning from horizontal positioning (which places the conduit in the path of horizontal gas discharge) to vertical positioning (where the conduit extends downward from above the battery module). This dimensional change allows the conduit to remain close to the battery cells for effective fire suppression while avoiding the horizontal trajectory of high-temperature gas discharge through the vents, thereby preserving conduit integrity.
2Device complexity
If the fire extinguishing conduit is positioned horizontally aligned with battery cell vents, then the system structure is simplified, but the conduit is damaged by gas discharge during battery events
Solution Approach 1:
The patent applies dimensional change by repositioning the conduit from a horizontal alignment with the battery cell vents to a vertical configuration where the conduit extends downward from above the battery module. This eliminates the horizontal overlap between the conduit and vent centers, preventing gas discharge damage while maintaining fire suppression capability through vertical alignment.
3Ease of manufacture
If general fire suppression equipment is used for battery fires, then the system cost is reduced, but the equipment fails to suppress high-pressure fires from high energy density batteries
Solution Approach 1:
The patent applies local quality by directing the fire extinguishing agent through conduits positioned specifically above each battery cell vent, allowing targeted suppression of high-pressure fires at their source. This localized approach uses standard equipment but optimizes its positioning and configuration to effectively handle the high-energy-density battery fire characteristics.
Data Source
AI summary
The present disclosure relates to a battery module and an energy storage system including the same in which a fire extinguishing conduit is positioned to be spaced apart from the center of a vent in a horizontal direction, thereby preventing the conduit from being lost by gas through the vent due to an event. As an example, the present disclosure provides a battery module and an energy storage system, wherein the battery module includes a module case which has an accommodation space therein and in which a plurality of battery cells are accommodated, a module pipe which is positioned above the module case and through which a fire extinguishing agent is movable, and a pipe guide rail which includes an accommodation portion in which the module pipe is accommodated and which is positioned on the module case, wherein each of the plurality of battery cells includes a vent, the vents of the plurality of battery cells are collinearly positioned in a longitudinal direction, and the module pipe and the accommodation portion are positioned to not overlap central areas of the vents in a horizontal direction.