In the past, a vehicle battery was considered to be a more or less handy and portable component that provided the 12/24 V voltage for the vehicle. In the context of electromobility, this has not only changed fundamentally in terms of battery technology, but the traction battery today has a size of up to 2.5 x 2 m with a weight of several 100 kg, depending on its capacity. In addition to the classic 12 V interface, many other connections and functionalities are integrated here, such as high voltage and a charging port for DC and/or AC power supply.
In practice, this means that the setup for testing a vehicle component in the context of EMC tests also changes fundamentally. Looking at the normative requirements and test setups of the relevant EMC specifications, not only a fundamental understanding of engineering is required here, but also larger EMC test chambers than the classic small CISPR 25 absorber chambers. In addition, due to the higher voltages and currents, more complex coupling networks and test systems are also required, both to measure the emitted interference and to couple the specified immunity levels to the interfaces. For the requirements of the charging interface, tests are required that, up until now, were only known from the standards for CE conformity when connecting systems to the power grid, such as harmonics, flicker, surge, and fast transients (burst).
Whereas, in the past, the battery was more or less only needed to start the vehicle, today it is an integral part of the operation and functionality of the vehicle while driving. In conjunction with the integrated complex electronics, the safety relevance of this system must therefore be considered increasingly here. However, since it is not possible in the EMC laboratory to operate the battery easily under full load, with several 100 kW during the complex and time-consuming tests, the manufacturer/customer and the test laboratory must jointly define sensible operating conditions. The specifications for use in the vehicle sector are specified essentially by the vehicle manufacturers, because the overall EMC concept of the vehicle must be considered and guaranteed in total.
However, modern battery systems are not only used in the field of vehicle technology, but also in the industrial and household sectors in conjunction with solar systems to temporarily store generated energy for periods in which there is little or no solar radiation due to the time of day and/or weather conditions. This is referred to as stationary energy storage.
EMC tests and other tests are of course also required here. However, the EMC standard situation is fundamentally different and therefore the test setups and requirements are also partly different compared to the automotive environment. In the case of stationary energy storage systems, the relevant EMC standards are essentially the generic standards EN 61000-6-1 to EN 61000-6-4. Qualification with the standards EN 61000-6-2 and EN 61000-6-3 is useful in order to enable maximum use in both residential and industrial environments.
Our laboratory is accredited according to DIN EN ISO/IEC 17025 and designated as a technical service of the German Federal Motor Transport Authority (Kraftfahrt-Bundesamt, KBA). The scope of our accreditation includes not only the automotive standards, but also the classical CE requirements, among others. This enables us to carry out tests for the awarding of the E-mark for the automotive sector as well as to provide the normative basis for CE conformity for stationary storage systems. This means that you receive the testing and approval service from a single source.
In cooperation with our other SGS departments in the greater Munich area, we can offer not only EMC, product safety, and RF testing, but also environmental simulation tests such as climatical and mechanical tests as well as battery and life tests on components and HV batteries (Li-ion cells/modules and traction batteries, UN transport tests).
Benefit from 40 years of experience and the competent test engineers of our EMC test laboratory.
Contact
Armin Hudetz
t: +49 89 78 74 75-133
f: +49 89 12 50 40 64-133
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Customer Service Team
t: +49 89 78 74 75-222
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