Freudenberg Sealing Technologies’ Topographic heat shields are designed for Lithium Battery Systems. Current battery cell and system development (e.g. increased energy density; ultra-fast charging) has a strong influence on the future safety of the battery system:
This market development creates more and more requests for “heat shields” within Lithium batteries, which are placed between the individual cells.
- In case of a severe cell malfunction (thermal runaway), the shields will slow down or even block the thermal propagation to an adjacent cell.
- Between the cells, the often so-called “compression pads” are placed to adjust the mechanical load of the cell stack.
FEATURES AND BENEFITS
Functionality of the Heat Shield depends on many parameters:
- cell chemistry
- cell design
- cell capacity
- soc of cell(s)
Each “Heat Shield Project” requires a close and individual customer specific development.
VALUES FOR THE CUSTOMER
FST´s Topographic Heat Shield combines three functions:
- significant reduction of heat transfer between the cells caused by malfunction temperatures
- acting as a “compression pad” to compensate the mechanical load of the cell stack
- equalization of the mechanical load of the adjacent cells – reduced compression in the center
The Topographic Heat Shield is not an “off-the-shell” solution; together with the customer it requires an individual adaptation in a development project