The requirements of test stand performance for electric drive units (EDU) and their components can vary greatly and strongly depend on the intended application: Development test stands, for example, are highly flexible, but are usually set up manually. Q test stands are used for establishing test parameters for the pre-series and provide a link between development and production. Finally, end-of-line (EOL) test stands have to be particularly efficient, which is why they are often mostly automated. Advice by JW Froehlich on the application-oriented development can help to achieve better cost efficiency, for example by reducing cycle times and limiting the tests to the necessary range of performance and measurements.
Many automotive manufacturers are increasingly focussing on individual testing of inverters. The heart of an electric vehicle integrates many different functions, and is increasingly manufactured in-house. JW Froehlich’s customized solutions for inverter development and production range from manually set-up development test stands and screening test chambers (for higher loads) to fully automated EOL test stands.
Automation solutions in EOL test stands by JW Froehlich comprise contacting, clamping unit design and test part logistics – depending on the requirements this may include the use of robots. Our internal measurement and testing technology (SOLVISO, SOLCOR) can also be integrated, as can customized solutions. JW Froehlich covers all testing processes – from leak testing and electrical HV testing to functional and load testing.
Our test stands and test systems are equipped with leakage test devices developed by our company, which are optimally integrated into the test process.