Conductive ring: providing higher reliability and longer service life for high-performance electric vehicle powertrain systems
Dr. Joanna Urbanek, Director of the Powertrain and Drive Control Business Line at Domax, stated, "We are working closely with industry leaders to jointly address the challenges of automotive electrification. The launch of this new product will further enrich our innovative solution portfolio and drive the development of the transportation electrification field."
Easy to integrate
It is worth mentioning that, The Domax conductive ring has a compact and scalable design, making it easy to integrate into customers' existing or new electric drive systems. In typical applications, it is installed at one end of the motor to provide a grounded electrical connection, while Domax hybrid ceramic ball bearings act as insulation at the other end.
Solving Difficulties in Electric Vehicle Power Systems
The new generation of electric vehicle powertrain architecture compactly integrates high-power motors, reduction gears, and precise electronic control. However, installing high-speed and high-voltage components in limited space may cause side effects, leading to premature failure of critical components.
One of the main challenges is parasitic current. Parasitic current circulates between the stator winding and the casing, inducing shaft voltage, which in turn generates circulating shaft current through mechanical components such as bearings, causing discharge and eroding the working surface of the bearings. This "micro pitting" phenomenon not only increases bearing noise and vibration, but may even lead to early failure. The launch of Domax conductive rings provides an effective solution to solve this industry problem, injecting new vitality into the reliability and durability of high-performance electric vehicle power systems.