comemso moves its ISO 15118 charging station test libraries into comframe

German test-equipment maker comemso has ported its test libraries based on ISO 15118-4 and ISO 15118-5 to comframe, its own software platform. Developers can configure, run and evaluate standardized communication tests for AC and DC charging stations directly in comframe. Additional test libraries are planned.

The ISO 15118 series defines the digital communication between an EV and a charging station. Parts 4 and 5 specify conformance tests for the network and application protocol layers and for the physical and data link layers, respectively.

The earlier libraries ran on a different software platform, but comemso had developed them entirely in-house. The comframe version is also an in-house development and builds on comemso’s earlier implementation validated through the Charging Interface Initiative (CharIN), an international association that promotes interoperability between EVs and charging stations.

Don’t miss comemso electronic’s webinar next week:
Standards And Practical Methods For EVSE Commissioning And Field Inspection

To verify the port, comemso ran test cases repeatedly on two charging stations using both comframe and the previous platform and compared the results. One of the two was the same unit used for the original CharIN validation. The company also checked every test case against comframe’s own charging station simulation, deliberately feeding in correct and faulty communication sequences to confirm that passing behavior was flagged as PASS and deviations from the requirements as FAIL.

comframe controls comemso’s EVCA (EV Charging Analyzer/Simulator) family of test systems, which analyze charging sessions and can simulate either a vehicle or a charging station. In the charging station tests, the EVCA takes the role of the vehicle and checks whether the connected station follows the specified communication rules.

Test configuration accounts for which functions the station supports and which technical details the tests require, drawing on standardized Protocol Implementation Conformance Statement (PICS) and Protocol Implementation Extra Information for Testing (PIXIT) data. Test selection, execution and evaluation all happen in the same software, and comframe can generate a separate report for each executed test case, which comemso says supports documentation and repeat testing after software changes.

Existing EVCA systems can be upgraded with comframe and the corresponding libraries.

“A key priority was to compare the results with the proven implementation and specifically check every test case for correct PASS and FAIL detection,” said Kiriakos Athanasas, comemso’s CEO.

Source: comemso