Battery Module Cell Isolation Structure for Flame Blocking
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Solution Overview
Problem
Conventional battery modules face issues with flame and heat propagation among battery cells, leading to reduced lifespan and potential ignition or explosion, as all cells are housed in a single space, allowing fires to easily spread.
Innovation Solution
A battery module design featuring a battery cell stack with insulating spaces created by first and second blocking members, coupled with a heat dissipation plate and heat transfer member, which isolates cells and directs heat externally, using materials like thermal grease, thermally conductive adhesives, or ceramic wool to prevent flame and heat propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all battery cells are disposed in one space, then the device complexity is reduced, but flame and heat propagate easily between cells
Solution Approach 1:
The battery module divides the single space into multiple separate insulating spaces using blocking members. Each battery cell is disposed in its own isolated insulating space, physically segmenting the cell arrangement to prevent flame and heat propagation between cells while maintaining a relatively simple overall structure.
2Object-affected harmful factors
If insulating spaces are introduced to isolate battery cells, then flame propagation is suppressed, but device complexity increases
Solution Approach 1:
The blocking members serve multiple functions simultaneously: they create insulating spaces to isolate battery cells from flame propagation, provides structural support for the battery module, and maintains the mechanical integrity of the cell stack. This merging of functions reduces the need for additional separate components.
3Temperature
If heat dissipation plate is coupled to battery cell stack, then heat is discharged externally, but the structure becomes more complex
Solution Approach 1:
The heat dissipation plate is integrated with the blocking members to form a unified structure. The blocking members not only provide insulation and cell isolation but also serve as attachment points and structural support for the heat dissipation plate, allowing a single component to perform multiple thermal management functions.
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
Effectively suppresses flame and heat propagation between battery cells, enhancing safety by isolating them within insulating spaces and efficiently dissipating heat, thereby reducing the risk of cell damage and explosion.
Implementation Method 1
a heat dissipation plate coupled to one side of the battery cell stack, to discharge heat generated in the battery cells externally
Implementation Method 2
a heat transfer member disposed between the battery cell stack and the heat dissipation plate
Implementation Method 3
a first blocking member formed of an insulating material and disposed between a plurality of insulating spaces to provide a plurality of insulating spaces
Data Source
AI summary
A battery module, includes a battery cell stack in which a plurality of battery cells are stacked; and a heat dissipation plate coupled to one side of the battery cell stack to discharge heat generated in the battery cells externally. The battery cell stack includes a first blocking member formed of an insulating material and disposed between the plurality of battery cells to provide a plurality of insulating spaces. The plurality of battery cells are distributedly disposed in the plurality of insulating spaces.