DIN EN ISO 15118-2 2016-08 PDF

Full title and description

STB DIN EN ISO 15118-2 2016-08 — Road vehicles — Vehicle‑to‑Grid Communication Interface — Part 2: Network and application protocol requirements. This document is the German adoption (DIN EN) of ISO 15118‑2 (edition published as ISO 15118‑2:2014) and specifies the IP‑based network and application layer protocol used between an electric vehicle (EV) and Electric Vehicle Supply Equipment (EVSE).

Abstract

ISO 15118‑2 details the communication between battery electric vehicles (BEV) or plug‑in hybrid electric vehicles (PHEV) and EVSE. It defines the application‑layer message set (using XML/EXI), data model, use of V2GTP, TCP, TLS and IPv6, session and message sequencing rules, and how layer‑3 services access data‑link services (with lower layers covered in ISO 15118‑3). The message set is designed to support energy transfer negotiation, authorization modes (including External Identification Means and Plug & Charge), secure transport and billing data exchange.

General information

• Status: Published (DIN adoption published Aug 2016). Note: ISO 15118‑2:2014 has been reviewed by ISO (review confirmed in 2024) and revision work (ISO/DIS 15118‑2) is/was in progress; some regional/adopted versions have subsequently been updated or superseded.
• Publication date: 2016‑08 (DIN EN ISO adoption); original ISO edition published 2014‑04.
• Publisher: Deutsches Institut für Normung (DIN) / Beuth (DIN adoption); original publisher International Organization for Standardization (ISO) for the ISO edition.
• ICS / categories: 43.040.15, 43.120 (electric road vehicles / EV charging communications).
• Edition / version: DIN EN ISO 15118‑2:2016‑08 — adoption of ISO 15118‑2:2014 (Edition 1).
• Number of pages: DIN adoption edition: 356 pages (as listed by DIN); ISO original edition: 342 pages.

Scope

This part of ISO 15118 specifies requirements for the network and application layers (OSI layers 3–7) for communication between the EV Communication Controller (EVCC) and the Supply Equipment Communication Controller (SECC). It covers message definitions, data representation (XML/EXI), transport protocols (V2GTP/TCP over IPv6), use of TLS for secure sessions, identification and authorization approaches (including support for Plug & Charge), message sequencing, timing and error handling. Physical and data link layer requirements are addressed in ISO 15118‑3.

Key topics and requirements

• Application‑layer message set and XML/EXI data model for negotiation of charging parameters, session control and billing information.
• Transport and network protocol usage: V2GTP, TCP, IPv6 and related RFCs; rules for mapping to data link/physical layers (see ISO 15118‑3).
• Security requirements: TLS‑based secure channels, certificate handling and support for a V2G PKI to enable Plug & Charge and secure authentication.
• Session lifecycle, timing, sequencing, error handling and state machine requirements for reliable charging communications.
• Support for identification modes (EIM/external ID and Plug & Charge), signed meter readings for billing, and information elements to support value‑added services.

Typical use and users

Primary users are EV and EVSE manufacturers, charging station and backend software developers, mobility service providers, utilities, testing and certification laboratories, system integrators and standards/regulatory bodies. The standard is used to implement interoperable EV↔EVSE communications, enable secure authorization (including Plug & Charge), and support integration of charging hardware with networked back‑ends for billing and energy management.

Related standards

ISO 15118‑1 (general information and use cases), ISO 15118‑3 (physical and data link layer), ISO 15118‑4 (conformance tests), ISO 15118‑8 (wireless communication aspects), IEC 61851 (conductive charging), IEC 62196 (connectors), and various IETF RFCs for IPv6/TCP/TLS referenced by ISO 15118‑2. Implementers typically cross‑reference these documents when designing interoperable charging solutions.

Keywords

ISO 15118, Vehicle‑to‑Grid (V2G), EVSE, EVCC, SECC, Plug & Charge, V2GTP, XML/EXI, TLS, IPv6, TCP, charging protocol, EV communication, public key infrastructure (PKI).

FAQ

Q: What is this standard?

A: It is the DIN EN ISO publication of ISO 15118‑2 (published as DIN EN ISO 15118‑2:2016‑08), specifying network and application‑layer requirements for vehicle‑to‑grid communications between electric vehicles and charging stations.

Q: What does it cover?

A: The standard defines the message set, data model (XML/EXI), transport and network protocol usage (V2GTP/TCP over IPv6), TLS‑based security and certificate usage, session management, timing and sequencing rules, and interfaces to lower layers (with ISO 15118‑3 covering physical/data link layers). It supports authorization modes including Plug & Charge and External Identification Means.

Q: Who typically uses it?

A: EV OEMs, charging station manufacturers, CPOs (charge point operators), mobility service providers, backend/firmware developers, test labs and certification bodies — anyone implementing or verifying interoperable EV↔EVSE communication stacks.

Q: Is it current or superseded?

A: The DIN EN ISO 15118‑2:2016‑08 publication records the 2016 adoption of ISO 15118‑2:2014. ISO has reviewed the 2014 edition (review confirmed in 2024) and revision work (ISO/DIS 15118‑2) has been underway; regional/adopted editions (EN/DIN) have seen subsequent updates or supersessions in some cases (for example EN adoption records indicate a supersession entry in 2022). Check the issuing standards body for the authoritative current status before procurement or conformance work.

Q: Is it part of a series?

A: Yes — ISO 15118 is a multipart series addressing vehicle‑to‑grid communication. Part 1 covers general information and use cases; Part 2 covers network and application protocols; Part 3 covers physical/data‑link layers; Part 4 addresses conformance testing; other parts (for example Part 8) cover wireless communication and additional topics.

Q: What are the key keywords?

A: V2G, EVSE, EVCC, SECC, Plug & Charge, V2GTP, XML/EXI, TLS, IPv6, TCP, PKI, charging protocol, interoperability.