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Germany: Leading market for electromobility – The market launch phase of electromobility has begun.

The EmoStar²K collaborative project led by DIN, DKE (VDE) and NAAutomobil (VDA) is helping to achieve this goal by executing coordinated and suitable measures in standards work on electromobility.

New sub-project on charging communication


Conformance tests for charging communication in ISO 15118-4 and ISO 15118-5


Electric mobility is finding its way more and more into the automotive industry. This is evident from the number of series-produced electric vehicles that have been launched on the market in recent years. This new technology brings a host of new challenges. One of the key aspects is fast DC charging at public charging stations. Vehicles such as the BMW i3, VW eUP and eGolf, Hyundai Ioniq and Chevy Bolt support the DC fast charging process according to the Combined Charging System Standard.

The evolution of the Combined Charging System relies on ISO 15118. The increasing number of vehicles and charging stations has made a conformance test necessary in order to ensure interoperability.

ISO 15118-4 specifies conformance tests according to ISO 15118-2. ISO 15118-5 specifies conformance tests according to ISO 15118-3. In both documents, an evaluation of all requirements for testability has been carried out. Based on this, test cases are created in TTCN-3 (Testing and Test Control Notation 3), according to ETSI standards and in tabular form.


The project described here includes the following objectives and tasks:

  1. A definition of the test system architecture and test suite structure.
  2. An analysis of all requirements stipulated in ISO 15118 with regard to testability using a black box test, and an evaluation of implicit and explicit testing capability.
  3. Creation of Protocol Implementation Conformance Statements (PICS) and Protocol Implementation eXtra Information for Testing (PIXIT) to ensure a high coverage of conformity tests for vehicles and charging columns.
  4. Creation of conformance test cases in TTCN-3 and in tabular form for all testable requirements for vehicles and charging stations on the basis of the requirements analysis.
  5. Description of each test case in tabular form and TTCN-3 with:
    • Test case identifier;
    • Test objective;
    • Requirements covered;
    • PICS selection;
    • PIXIT selection;
    • Pre-condition and
    • Expected behavior.
  6. When creating the test cases, the control pilot and proximity test cases according to IEC 61851-1 are taken into consideration.
  7. Documentation of inconsistencies and errors of ISO 15118-2 and ISO 15118-3 in the ISO 15118 User Group.

Project Sponsor


Project duration

03/2018 to 12/2019

Your contact

Stephan Krähnert | VDA

Tel.: +49 30 897 842 324