Freudenberg Sealing Applied sciences has developed a seal for Li-ion batteries that not solely resists fireplace however “folds” to supply further protections. Right here’s the way it works: fastened aluminum components are outfitted with a sealing profile on their outer edges to not solely present stability but additionally combine mounting factors for the clips used to connect the seal on the housing cowl.
The weather are related with each other utilizing a steady sealing profile, which is extremely versatile and compensates for small dimensional deviations within the housing. Freudenberg says the set up is extraordinarily dependable, as a result of the foldable seal is an entire part and doesn't have to be assembled from separate components.
Additionally, metallic inlays guarantee excessive electrical conductivity between the battery housing and its cowl. That is essential for the environment friendly screening of electromagnetic fields that outcome from the circulation of present within the battery. In any other case, the fields may disrupt different digital parts within the automobile.
The corporate has developed its personal endurance assessments so it might probably confirm passable operation of the seals. The method makes it doable to check the seals with out utilizing actual housings, that are laborious to deal with as a result of their measurement.
The testing course of makes use of a hydraulic ram with a frequency of as much as 50 Hz to behave on a sealed check housing, consisting of two halves, which simulates the aerodynamic torsion that happens throughout driving. A slight overpressure is regularly maintained contained in the housing to detect leaks. Your complete check takes place in a local weather chamber so the impression of the temperature could be recorded.
“The electrical automotive will prevail,” stated Freudenberg VP Paul Hailey. “However manufacturing giant batteries in excessive volumes is a serious problem for our clients. With our sealing options, we're going to assist them grasp this.”
Supply: Freudenberg Sealing Applied sciences