prEN ISO 15118-21

Road vehicles - Vehicle to grid communication interface - Part 21: Common 2nd generation network layer and application layer requirements conformance test plan (ISO/DIS 15118-21:2024)

Publication date:   Mar 28, 2024

Scope

The document specifies all common test cases to be applied to and correctly handled by EVs (EVCC) and EVSEs (SECC) implementing ISO 15118-20 that are independent of a particular charging type (AC, DC, ACD, WPT charging). The document considers the use cases defined in ISO 15118-1:2019
The test system will comprise:
- A simulated SECC to verify the correct behaviour of a real EVCC
- A simulated EVCC to verify the correct behaviour of a real SECC
The document specifies test cases for all requirements defined in ISO 15118-20, verifying at least the following aspects:
- Charge spot discovery and initialization of communication (TCP / TLS connection establishment).
- Session establishment, session interruption and session re-establishment.
- Authentication process for charging session (e.g. EIM and PNC)
- Service discovery and selection
- Common and charging type independent service implementation
- Termination of charging session
- Error handling
The test cases cover positive tests (according to ISO 15118-20). In addition, error scenarios (e.g., incorrectly formatted requests, invalid content of messages, etc.) as well as tests for timing behaviour are defined which are also handled by EVCC and SECC ensuring interoperability between EVs and EVSEs.
The test cases will be structured according to OSI-layers 3 to 7 depending on their testability from a (non-) functional perspective (e.g., IPv6, TCP, TLS.
The test cases will include standard test case attributes like pre-conditions, test behaviours, expected results to evaluate pass or fail and post-conditions to be applied returning the system under test to a safe state.