Numerous dispensing applications are required in the production of traction motors for electric and hybrid vehicles. Bus bar potting is one of them.
Two main types of AC motors are used in electric vehicles: asynchronous motors (ASM) and synchronous motors with permanent magnets (PSM). In both cases, bus bars at the ends of the windings of the stator establish switching connections between individual windings. These bus bars must be encapsulated to insulate them from the cooling medium of the motor. The encapsulation must be carried out with high precision to avoid performance losses due to a reduced cooling effect.