Battery Module Fireproof Layer for Thermal Runaway Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In battery modules, thermal runaway in one cell can easily spread to other cells due to heat transfer, leading to chain reactions that may result in fires or explosions, compromising safety.
Innovation Solution
A battery module with a first fireproof layer attached to the top surfaces of cells, which acts as a fireproof and heat insulation barrier to prevent lateral fire spread and delay thermal runaway, using materials like mica sheets for effective fireproofing and heat insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cells are arranged compactly to increase energy density, then productivity is improved, but thermal runaway spreads more easily between cells
Solution Approach 1:
The battery module divides the continuous cell arrangement into segmented zones by inserting fireproof layers between adjacent cells. These layers act as physical barriers that segment the thermal runaway propagation path, allowing compact cell arrangement while preventing heat transfer between cells.
Solution Approach 2:
Fireproof layers are introduced as intermediary components between adjacent cells. These layers serve as thermal insulation barriers that mediate the thermal interaction between cells, blocking heat transfer while maintaining the compact overall structure of the battery module.
2Reliability
If fireproof layers are added between cells to prevent thermal runaway spread, then safety is improved, but device complexity increases
Solution Approach 1:
The fireproof layers are implemented as thin film structures that can be easily integrated between cells. These thin film fireproof layers provide effective thermal insulation while occupying minimal space, thus improving safety without significantly increasing the overall structural complexity or volume of the battery module.
3Object-affected harmful factors
If fireproof layers are attached to cell surfaces to block fire spread, then harmful factors are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The fireproof layers are merged with the cell assembly process, being attached to cell surfaces during manufacturing. This integration approach allows the fireproof layers to be positioned accurately between cells while maintaining manufacturing efficiency, reducing the need for separate precision positioning steps.
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 fireproof layer effectively blocks fire spread and reduces the risk of thermal runaway, preventing damage to the entire battery module by containing heat and flames, thereby enhancing safety and reducing the risk of explosions.
Implementation Method 1
the first fireproof layer is arranged on the cells... acts as a fireproof and heat insulation barrier to prevent lateral fire spread and delay thermal runaway
Data Source
AI summary
A battery module includes a plurality of cells and a first fireproof layer. The cells are arranged in sequence. The first fireproof layer is arranged on the plurality of cells. The first fireproof layer is attached to top surfaces of the cells. A battery pack includes at least two battery modules stacked vertically.