HKO provides innovative solutions for electric vehicle batteries that ensure consistent holding force and electrical insulation. Our materials contain heat spread and minimize the impact and occurrence of battery fires. DEFENSOR-Flex® Multilayer solutions offer passive fire protection in and around accumulators, significantly extending rescue times in the event of thermal runaway. Our solutions also cover gas and particle filtration, vent protection, and pressure relief within the battery.
Passive fire protection of EV battery packs, modules, and cells
Between the battery cells
DEFENSOR-Flex® Multilayer solutions for electric vehicle batteries provide consistent holding force and are electrically insulating for reliable performance and longevity of pouch and prismatic cells.
Multilyered technical textiles for thermal spread protection are thin, lightweight and create a reliable barrier to contain the spread of fire, reducing the risk of thermal runaway.
Battery lid and housing
DEFENSOR-Flex® Multilayer battery covers provide a passive fire protection solution and act as a barrier in the event of thermal runaway and battery fires. They reduce the temperature between the lithium-ion battery (LIB) and the passenger cabin, helping to extend the rescue time for passengers. They also protect the battery from fires originating outside the battery.
BMS and Module
DEFENSOR-Flex® Multilayer protect the battery management system (BMS) from heat and fire, helping to extend the functionality of the BMS. A layer of our lightweight products under/around the module forms a reliable protective barrier against flames and sparks.
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BMS
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Mini-BMS and BMS
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Between the modules
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Below the modules
Gas- and particle filtration
A DEFENSOR-Flex® Multilayer fiberglass mat around the battery modules acts as a filter and pressure relief layer in the event of thermal runaway. The multilayer structure reduces the release of highly toxic gases, condensates, and particles. Additionally, the temperature- and fire-resistant material prevents the spread of flames and sparks.
Vent protection in EV batteries
At the first moment of thermal runaway, the rupture disc is destroyed and burns a hole in the vent shield, allowing particles and gases to escape from the cell and preventing a pressure increase. To minimize the backlash of these particles and hot gases on the neighboring cells, our innovative solution uses the DEFENSOR-Flex® Venting Shield made from lightweight woven and finsihed textiles.
