UNE-EN ISO 15118-2-2016 PDF

Full title and description

UNE‑EN ISO 15118‑2:2016 — Road vehicles — Vehicle‑to‑grid communication interface — Part 2: Network and application protocol requirements. This document is the European (EN) / national (UNE/AENOR) adoption of ISO 15118‑2 (originally published as ISO 15118‑2:2014) and specifies the IP‑based network and application layer messages, protocols and sequencing for communication between an electric vehicle communication controller (EVCC) and a supply equipment communication controller (SECC).

Abstract

ISO 15118‑2 details the network‑ and application‑layer requirements that enable discovery, session establishment and message exchange between EV and EVSE for the purpose of energy transfer, status reporting and control. It defines the application message set (XML/EXI), transport and security usage (e.g., V2GTP, TLS over TCP/IPv6) and how higher‑layer functions map to link/physical layer services (the latter are addressed in ISO 15118‑3). The UNE‑EN ISO 15118‑2:2016 text is the European endorsed edition of that content.

General information

• Status: Published / active as the 2016 European adoption of ISO 15118‑2 (note: the ISO 15118 family has continued to evolve; see Related standards).
• Publication date: European adoption (UNE‑EN ISO 15118‑2) endorsed 2016; original ISO edition published April 2014.
• Publisher: AENOR / UNE as the Spanish national adoption of EN ISO 15118; original document published by ISO.
• ICS / categories: 43.120 (Electric road vehicles); also referenced under car informatics / on‑board systems (43.040.15) in some national listings.
• Edition / version: UNE‑EN ISO 15118‑2:2016 (text corresponds to ISO 15118‑2:2014, Edition 1).
• Number of pages: National publications vary (typical published page counts reported between ~342 and ~378 pages depending on national foreword/annexes).

Scope

This part of ISO 15118 specifies the network and application protocol requirements for communication between an EV (BEV or PHEV) and EVSE to support charging (and related information exchange). It covers message definitions, sequence diagrams, data models, encoding (XML/EXI), transport (V2GTP over TCP/IP, IPv6), and security layers (TLS usage and certificate‑based authentication), and describes how to access data‑link layer services from layer 3. Physical and data‑link layer specifics are covered in ISO 15118‑3.

Key topics and requirements

• IP‑based EV ↔ EVSE communication model (EVCC / SECC architecture).
• Application message set and data model (XML with EXI for compact encoding).
• Transport protocols and sequencing (V2GTP, TCP, IPv6 considerations).
• Security and authentication: TLS profiles, certificate usage and support for certificate‑based authentication (enabler for "Plug & Charge" style features).
• Support for discovery, session establishment, charging scheduling and status reporting.
• Mapping from network/application layer needs to data‑link/physical layer services (interoperability with ISO 15118‑3 and other lower‑layer specs).

These topics are defined to enable interoperable EV charging sessions and to provide the foundations for secure automatic authentication and billing architectures (commonly referred to as Plug & Charge when certificate‑based authentication is used).

Typical use and users

Primary users include EV and EVSE manufacturers, firmware and software engineers implementing EV communication stacks, test laboratories and certification bodies, charging network operators, e‑mobility service providers (EMSPs), utilities integrating charging into energy management, and regulators procuring interoperable systems. The standard is used to design, implement and test charging station communications and to enable certificate‑based authentication/payment flows.

Related standards

ISO 15118‑2 is part of the ISO 15118 series; closely related documents include ISO 15118‑1 (general information and use cases), ISO 15118‑3 (physical and data‑link layer requirements), ISO 15118‑4 (conformance tests) and the newer ISO 15118‑20 (2nd‑generation network and application layer requirements) which expands and supersedes parts of the original 15118‑2 application layer in many jurisdictions. Implementers will also commonly reference related charging and connectivity standards (for example IEC 61851 for conductive charging and industry profiles/roaming frameworks).

Keywords

ISO 15118, UNE‑EN ISO 15118‑2, vehicle‑to‑grid (V2G), EVCC, SECC, EVSE, V2GTP, Plug & Charge, EXI, XML, TLS, IPv6, EV charging protocol, EV communication, charging session, certificate‑based authentication.

FAQ

Q: What is this standard?

A: UNE‑EN ISO 15118‑2:2016 is the Spanish/European adoption of ISO 15118‑2 (original ISO edition published April 2014). It defines the network and application layer protocol requirements for communication between electric vehicles and charging stations (EVSE).

Q: What does it cover?

A: It covers message definitions, application data models (XML/EXI), transport and sequencing (V2GTP, TCP/IP, IPv6), and security/TLS usage for EV ↔ EVSE communication. Lower‑layer physical and data‑link specifics are covered in ISO 15118‑3.

Q: Who typically uses it?

A: EV and EVSE manufacturers, firmware/software developers, test labs and conformity assessors, charging network operators, EMSPs, utilities and procurement/regulatory bodies who need interoperable secure charging communication.

Q: Is it current or superseded?

A: UNE‑EN ISO 15118‑2:2016 reflects ISO 15118‑2:2014. The ISO 15118 family has evolved: ISO 15118‑20 (published 2022) provides a 2nd‑generation network/application specification and many national/European adoptions have moved to EN ISO 15118‑20; some national listings show withdrawal/supersession of the 2016 EN edition in favour of the newer parts. Users should check their national standards body for the current endorsed edition before procurement or certification.

Q: Is it part of a series?

A: Yes — ISO 15118 is a multi‑part series (e.g., ISO 15118‑1, ‑2, ‑3, ‑4, and newer parts such as ISO 15118‑20) that together specify use cases, network/application protocol, physical/data‑link layers and conformance testing for EV charging communication.

Q: What are the key keywords?

A: Vehicle‑to‑Grid (V2G), EVCC, SECC, EVSE, V2GTP, Plug & Charge, XML/EXI, TLS, IPv6, charging protocol, ISO 15118.