EOL test systems for e-Drives and e-Motors

Proven testing technologies

Using proven testing technologies for e-drive testing achieves maximum production efficiency

Modular EOL test concepts for the latest e-drive systems. Fully automated with flexible test software developed in-house. Full test functionality – from electrical testing to dynamic NVH testing. Our many years of experience and exceptional degree of standardization when it comes to testing e-drives ensures the functionality and quality of all of an e-drive's properties. And, of course, this plays an important role in efficiency and safety.

With our extensive standardization and expertise in drive technology and measuring technology, BBS can achieve dynamism and excellent control accuracy. This leads to short cycle times: saving time and increasing output. Short cycle times with maximum testing quality – that's what we guarantee.

Noise, Vibration, Harshness (NVH)
Performance and efficiency test
Park lock and differential test
Oil filling and flushing
Cooling water flushing
Media supply (oil, water)
Back EMF, cogging, ripple
Resistance, insulation
Resolver test
Communication (CAN, FlexRay, LIN)
Fully restbus simulation

Noise-Vibration-Harshness

The NVH test includes noise, vibration and harshness testing and is part of End of Line testing for all e-drives. It ensures that the drive system does not produce any inadmissible noises or vibrations. The continuous testing process enables our customers to identify any tendencies during production in a timely manner, so they can intervene at the right stage in the production process.

Last, but not least, the NVH test contributes towards ensuring the quality, comfort and reliability of electrical drive systems in modern vehicles.

The resolver test

The resolver is a sensor that measures the angular position of the motor and communicates with the control electronics. At the end of the assembly process, the test bench checks the strength and quality of the resolver signal. When requested, it calibrates this signal with the electrical motor. The resolver test is used to check the output signals in detail, to manage the drive system's controls and ensure they are free from error.

Differential and park lockout test

This test confirms that the e-drive differential performs as intended and distributes torque between the e-vehicle wheels correctly and effectively. This means that the vehicle travels around corners smoothly and that there are no jerky transitions during acceleration or braking.

By performing the park lockout test as part of the EOL testing procedure, our customers can make sure that the park lockout mechanism is working properly and complies with safety standards. This is an important test step for ensuring the drive's safety.

Performance and efficiency testing

Performance and efficiency testing checks the e-drive's electrical and mechanical performance. These tests focus on compliance with nominal specifications and achieving maximum performance. An e-vehicle with the best possible efficiency can also achieve maximum range.