OEM&Lieferant Ausgabe 2/2021

113 High-Voltage Equipment https://t1p.de/pudi Softing Automotive https://automotive.softing.com Share devices of the vehicle power electronic system and are used to replace the DC link capacity in the vehicle. What are called HV-C decades allow the adjustment of ca- pacitance values in 100µF steps up to a to- tal capacitance of 21mF and can be used in automated solutions as well as in manually operated systems for laboratory use. When testing safety-relevant system func- tions, verifying and proving correct system responses is essential. This includes, for example, the prompt detection of insulation faults and immediate shutdown of the HV on- board power system in the event of a safe- ty-critical fault. Here, battery management systems permanently monitor, for example, short circuits, leakage currents and even line interruptions in the area of the HV con- nection, typically by cyclically measuring the insulation resistance of HV+ and HV- against pin 31 (chassis). HV insulation fault simula- tions generate error conditions in the area of HV connections and lines manually or automatically. HV charge switches as well as highly reliable supply and test systems For DC high power charging systems (HPC), Softing designs and implements technically sophisticated HV charge switches. Here, the thermal load on affected components can be reduced by liquid-cooled charging cables and connectors, whose cooling unit is either an air cooling system or a connection to an existing house cooling system. By switching between different charging connector vari- ants, charging stations are also compatible with older electric vehicles. To ensure that sufficient electrical power is always guaranteed when testing battery management systems and HV components, energy recovered from charged systems is integrated into the HV supply systems so that only a small amount of heat is lost. Furthermore, Softing develops and designs individual high-voltage test setups for the de- velopment of electric and hybrid vehicles in the laboratory and on the test bench. Exam- ples are HiL test systems for cell monitoring electronics, battery management systems and on-board chargers during “power refu- eling”. Various HV components can be inte- grated into the HiL test systems depending on the specific requirements. In addition to these exemplary applications from the high-voltage sector, Softing proj- ects and develops individual test systems of all kinds. Electromechanical component tests and customer-specific special cables and adaptations round off all these topics.