Battery Pack Module Fire Barrier and Spacer Layout for Flame Containment
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Solution Overview
Problem
Existing battery packs lack effective mechanisms to quickly extinguish flames and prevent the spread of fire in case of a flame occurrence, posing a safety risk.
Innovation Solution
A battery pack design incorporating a housing with fire prevention sheets and spacers made of flame-retardant materials, along with a substrate and film configurations, to contain and extinguish flames, and facilitate gas discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional battery pack design without fire prevention mechanisms is used, then device complexity is reduced, but safety and fire containment capability deteriorate
Solution Approach 1:
The battery pack is divided into modular units with individual fire prevention sheets for each battery module. Each module has its own containment system with spacers creating separation zones, allowing fire to be contained within individual modules rather than affecting the entire pack.
Solution Approach 2:
Fire prevention sheets made of flame-retardant material are introduced as intermediary elements between battery modules. These sheets act as barriers that prevent direct flame propagation while maintaining the structural integrity and electrical isolation between adjacent battery cells.
2Object-affected harmful factors
If fire prevention sheets are placed directly on the case, then fire containment is improved, but gas discharge capability deteriorates due to blockage
Solution Approach 1:
The fire prevention sheet is designed with differentiated regions: a first region that contacts the case for fire containment, and a second region that extends toward the opening to facilitate gas discharge. This local quality variation allows the single component to perform both fire containment and gas venting functions simultaneously.
Solution Approach 2:
The fire prevention sheet extends in multiple dimensions from the case surface, creating a three-dimensional structure that provides both horizontal fire barrier coverage and vertical gas discharge pathways. The sheet's multi-dimensional configuration allows it to block flame spread while maintaining open channels for gas escape.
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 effectively contains and extinguishes flames, minimizing damage to the battery pack and preventing the spread of fire, thereby enhancing safety.
Implementation Method 1
The first fire prevention sheet may include a flame-retardant material or a fire extinguishing agent
Implementation Method 2
a first spacer on the case configured to separate the first fire prevention sheet from an upper surface of the case
Data Source
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AI summary
A battery pack (10) includes a housing (100) and battery modules (30, 300) in the housing. Each of the battery modules includes battery cells, a case (310) accommodating the battery cells, a first fire prevention sheet (360) on the case, and a first spacer (370) on the case and configured to separate the first fire prevention sheet from an upper surface of the case.