Freudenberg Sealing Technologies has pioneered a new technology to seal busbars in electric motors and batteries, offering a simple solution that is space-efficient, inexpensive and temperature-resistant. The firmly bonded connection between the rectangular busbars and the surrounding sealing material ensures absolute impermeability.
In scenarios where busbars extend from an oil-cooled electric motor to an inverter’s power electronics, for example, there has been no optimal sealing solution for the housing passages. As a result, the electronics have been at risk of damage from the coolant. Similar sealing challenges are faced by other housing passages for electrical conductors with a rectangular cross-section, such as in cooled batteries and oil pumps.