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 of topographic heat shield

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.

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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