Battery Pack Case With Integrated Gas Storage and Spray Plates
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Solution Overview
Problem
Conventional battery packs for electric vehicles face issues with fire suppression systems that fail to operate effectively due to damage from high temperatures, leading to incomplete fire extinguishing and potential backflow of gases, necessitating separate control logic and components that can be compromised in a fire scenario.
Innovation Solution
A battery pack case design with integrated gas storage units and spray plates, utilizing extruded materials and urethane foam beads, along with a control valve system to ensure fire extinguishing agent is sprayed efficiently even at high temperatures, without separate pumps or injectors, and integrated control logic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate gas storage tank and pump are used for fire suppression, then fire extinguishing capability is provided, but the system complexity increases and components may fail under high temperature conditions
Solution Approach 1:
The gas storage tank is integrated into the battery case structure, combining the fire suppression function with the existing case components. This eliminates separate pumps and injectors, reducing system complexity while maintaining fire suppression capability under high temperature conditions
2Ease of operation
If a separate pump and injector are used for gas spraying, then fire extinguishing agent delivery is enabled, but component failure risk increases under high temperature
Solution Approach 1:
The pump and injector components are removed from the system entirely. The gas storage tank is designed to directly spray the fire extinguishing agent through integrated spray holes in the battery case, eliminating components that could fail under high temperature conditions
3Volume of stationary object
If conventional battery pack structure is used, then space utilization is achieved, but rigidity maintenance performance is insufficient when integrating fire extinguishing components
Solution Approach 1:
The gas storage tank is merged with the battery case structure, utilizing the existing case walls and partitions as integral parts of the fire suppression system. This integration maintains structural rigidity while providing fire extinguishing capability without requiring additional external components
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 design enables reliable fire suppression within the battery pack without external components, ensuring complete extinguishing and minimizing external exposure, while optimizing internal space usage.
Implementation Method 1
one or more gas storage devices that store gas
Implementation Method 2
a plurality of spray plates that spray gases introduced from the one or more gas storage devices
Implementation Method 3
a bead may be provided at corners of the internal space, wherein the one or more gas storage devices may store gas in each internal space. The bead may be formed of urethane foam
Data Source
AI summary
A battery pack case for an electric vehicle is provided. The battery pack includes: a lower case including an outer wall and one or more partition walls therein, each of the outer wall and the one or more partition walls including one or more gas storage devices that store gas; and an upper case connected to the lower case and including spray plates that spray gases introduced from the one or more gas storage devices. The one or more gas storage devices are integrated with the one or more partition walls and the outer wall of the lower case, and the battery pack case accommodates one or more battery modules.