SIST EN ISO 15118-20:2022

SLOVENSKI STANDARD
SIST EN ISO 15118-20:2022
01-julij-2022
Nadomešča:
SIST EN ISO 15118-2:2016
Cestna vozila - Komunikacijski vmesnik med vozilom in omrežjem - 20. del:
Zahteve za omrežno in aplikacijsko plast druge generacije (ISO 15118-20:2022)
Road vehicles - Vehicle to grid communication interface - Part 20: 2nd generation
network layer and application layer requirements (ISO 15118-20:2022)
Straßenfahrzeuge - Kommunikationsschnittstelle zwischen Fahrzeug und Ladestation -
Teil 20: 2. Generation Anforderungen an das Netzwerk- und Anwendungsprotokoll (ISO
15118-20:2022)
Véhicules routiers - Interface de communication entre véhicule et réseau électrique -
Partie 20: Exigences des couches réseau et application de 2ème génération (ISO 15118
-20:2022)
Ta slovenski standard je istoveten z: EN ISO 15118-20:2022
ICS:
35.100.05 Večslojne uporabniške Multilayer applications
rešitve
43.040.15 Avtomobilska informatika. Car informatics. On board
Vgrajeni računalniški sistemi computer systems
SIST EN ISO 15118-20:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 15118-20:2022

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SIST EN ISO 15118-20:2022


EN ISO 15118-20
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2022
EUROPÄISCHE NORM
ICS 43.120 Supersedes EN ISO 15118-2:2016
English Version

Road vehicles - Vehicle to grid communication interface -
Part 20: 2nd generation network layer and application
layer requirements (ISO 15118-20:2022)
Véhicules routiers - Interface de communication entre Straßenfahrzeuge - Kommunikationsschnittstelle
véhicule et réseau électrique - Partie 20: Exigences des zwischen Fahrzeug und Ladestation - Teil 20: 2.
couches réseau et application de 2ème génération (ISO Generation Anforderungen an das Netzwerk- und
15118-20:2022) Anwendungsprotokoll (ISO 15118-20:2022)
This European Standard was approved by CEN on 12 April 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15118-20:2022 E
worldwide for CEN national Members.

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SIST EN ISO 15118-20:2022
EN ISO 15118-20:2022 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 15118-20:2022
EN ISO 15118-20:2022 (E)
European foreword
This document (EN ISO 15118-20:2022) has been prepared by Technical Committee ISO/TC 22 "Road
vehicles" in collaboration with Technical Committee CEN/TC 301 “Road vehicles” the secretariat of
which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 15118-2:2016.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 15118-20:2022 has been approved by CEN as EN ISO 15118-20:2022 without any
modification.

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SIST EN ISO 15118-20:2022

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SIST EN ISO 15118-20:2022
INTERNATIONAL ISO
STANDARD 15118-20
First edition
2022-04
Road vehicles — Vehicle to grid
communication interface —
Part 20:
2nd generation network layer and
application layer requirements
Véhicules routiers — Interface de communication entre véhicule et
réseau électrique —
Partie 20: Exigences des couches réseau et application de 2ème
génération
Reference number
ISO 15118-20:2022(E)
© ISO 2022

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2022 – All rights reserved

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
Contents          Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 4
4 Abbreviated terms . 12
5 Conventions . 15
5.1 Definition of OSI based services . 15
5.2 Requirement structure . 15
5.3 Usage of references . 16
5.4 Notation used for XML schema diagrams. 16
6 Document overview . 16
7 Basic requirements for V2G communication. 17
7.1 General information . 17
7.2 Service primitive concept of OSI layered architecture . 18
Overview . 18
Syntax of service primitives . 18
7.3 Security concept . 19
General . 19
Certificate and key management . 21
Number of root certificates and root validity . 35
Support and application of TLS . 37
Firewall . 38
Protection of the cryptographic keys . 38
Random number generation . 40
7.4 V2G communication states and data link handling . 42
7.5 Data link layer . 46
Data link layer security for WLAN . 46
7.6 Network link layer . 51
General . 51
Applicable RFCs, limitations and protocol parameter settings . 51
IP addressing . 53
7.7 Transport layer . 54
Transmission control protocol (TCP) . 54
User datagram protocol (UDP) . 55
Transport layer security (TLS) . 56
7.8 V2G transfer protocol . 82
General information . 82
Supported ports . 83
Protocol data unit . 84
7.9 Presentation layer . 87
XML and efficient XML interchange (EXI) . 87
Message security . 90
7.10 Application layer . 115
SECC discovery protocol . 115
8 Application layer messages . 128
8.1 General information and definitions . 128
8.2 Protocol handshake definition . 129
© ISO 2022 – All rights reserved iii

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
Handshake sequence . 129
Message definition supportedAppProtocolReq and supportedAppProtocolRes . 131
Semantics description supportedAppProtocol messages . 132
Message examples . 133
8.3 V2G message definition . 134
Overview . 134
General . 135
Header definition . 135
Request and response definitions . 138
Complex data types . 240
8.4 Service selection . 361
General . 361
General description of configuration parameters . 362
Selection of service and service parameters . 363
8.5 V2G communication timing . 373
Overview . 373
Common . 373
DC service . 374
Message sequence and communication session . 374
Session setup and ready to charge . 381
V2G message synchronization for AC and DC with IEC 61851-1 signalling . 387
V2G message synchronization with IEC 61980-2 signalling for WPT . 394
8.6 Message sequencing and error handling . 394
Overview . 394
Basic definitions for error handling . 395
ResponseCode handling . 395
Request-response message sequence requirements . 406
Multiplexed communication . 434
Message sequence diagrams . 437
(normative) Schema definition . 442
(normative) Certificate profiles . 444
(normative) Specification of identifiers . 498
(informative) ACDP . 504
(informative) Basic PPD for interoperability . 506
(informative) Message sequencing for renegotiation . 509
(informative) Association of VAS client to V2G session . 511
(informative) Application of certificates . 512
(informative) Precision of measurements and tolerances . 547
(informative) Absolute pricing examples . 549

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical activity.
ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of document should be noted. This document was drafted in accordance with the editorial
rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or
www.iec.ch/members_experts/refdocs).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Details
of any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents) or the IEC list of patent
declarations received (see https://patents.iec.ch).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.
This document was prepared jointly by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC
31, Data communication, Technical Committee IEC/TC 69, Electrical power/energy transfer systems for
electrically propelled road vehicles and industrial trucks, in collaboration with the European Committee
for Standardization (CEN) Technical Committee CEN/TC 301, Electrically propelled road vehicles, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 15118 series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-
committees.
© ISO 2022 – All rights reserved v

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
Introduction
The pending energy crisis and necessity to reduce greenhouse gas emissions started in the former
century has led the vehicle manufacturers to a very significant effort to reduce the energy consumption
of their vehicles up to the present. As countermeasures to this continuous problem, they developed
vehicles partly or completely propelled by electric power and launched them into the market. Those
vehicles will reduce the dependency on oil, improve the global energy efficiency and reduce the total CO
2
emissions for road transportation if the electricity is produced from renewable sources. To charge
electricity to the batteries of such vehicles, a specific charging infrastructure is required.
Much of the standardization work on dimensional and electrical specifications of the charging
infrastructure for electric vehicles and the vehicle interface were treated in the relevant ISO or IEC groups.
However, the standardization work about direct information transfer between the electric vehicle and
the charging infrastructure was not enough, and it was assigned to the ISO 15118 series to treat the
subject sufficiently.
Such communication is necessary for the optimization of energy resources and energy production
systems. With it electric vehicles can be connected to the supply network and communicate the most
economic or most energy efficient way for charging/discharging. It is also required to develop efficient
and convenient billing systems in order to cover the resulting payments. The necessary communication
channel can serve in the future to contribute to the stabilization of the supply network as well as to
support additional information services required to operate electric vehicles efficiently and economically.
After the standardization work of the first basic smart charging was completed, more standardization
work for further evolved functions and high energy efficiency was continuously requested again.
It includes:
— improved charge methods that reduces efforts and agonies of the charging operation;
— extended functions for the electric vehicles to be utilized as distributed energy resources, which
enable smoothing of the electricity load of the supply network for higher energy efficiency and also
provide power back to the grid;
— information services for the user with higher added value and new convenience.
As for the communication system, the next evolution will be expected to realize these new applications.
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SIST EN ISO 15118-20:2022
INTERNATIONAL STANDARD ISO 15118-20:2022(E)

Road vehicles — Vehicle to grid communication
interface —
Part 20:
Network and application protocol requirements
1 Scope
This document specifies the communication between the electric vehicle (EV), including battery electric
vehicle (BEV) and plug-in hybrid electric vehicle (PHEV), and the electric vehicle supply equipment
(EVSE). The application layer messages defined in this document are designed to support the electricity
power transfer between an EV and an EVSE.
This document defines the communication messages and sequence requirements for bidirectional power
transfer.
This document furthermore defines requirements of wireless communication for both conductive
charging and wireless charging as well as communication requirements for automatic connection device
and information services about charging and control status.
The purpose of this document is to detail the communication between an electric vehicle communication
controller (EVCC) and a supply equipment communication controller (SECC). Aspects are specified to
detect a vehicle in a communication network and enable an Internet Protocol (IP) based communication
between the EVCC and the SECC (see Figure 1).

Key
1 scope of this document
2 message definition considers use cases defined for communication between SECC to SA
Figure 1 — Communication relationship among the EVCC, SECC and SA
This document defines messages, data model, XML/EXI-based data representation format, usage of
rd th
V2GTP, TLS, TCP and IPv6. These requirements belong to the 3 until the 7 OSI layer model. In addition,
the document describes main service sequences of conductive charging, wireless power transfer and
bidirectional power transfer, and how data link layer services can be accessed from an OSI layer 3
perspective.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3780, Road vehicles – World Manufacturer Indentifier (WMI) code
ISO 4217, Codes for the representation of currencies
© ISO 2022 – All rights reserved 1

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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
ISO 15118-2:2014, Road vehicles ― Vehicle to grid communication interface ― Part 2: Network and
application protocol requirements
ISO 15118-3:2015, Road Vehicles — Vehicle to grid communication interface — Part 3: Physical and data
link layer requirements
ISO 15118-8, Road Vehicles — Vehicle to grid communication interface — Part 8: Physical and data link
layer requirements for wireless communication
ISO 19363:2020, Electrically propelled vehicles—Magnetic field wireless power transfer—Safety and
interoperability requirements
ISO/IEC 11889-1:2015, Information technology — Trusted platform module library — Part 1: Architecture
IEC 61851-1:2017, Electric vehicle conductive charging system ― Part 1: General requirements
IEC 61851-23-1:2014, Electric vehicle conductive charging system - Part 23-1: DC Charging with an
automatic connection system
IEC 61980-2, Electric vehicle wireless power transfer (WPT) systems - Part 2: Specific requirements for
communication between electric road vehicle (EV) and infrastructure
1
IEC 63119-2 , Information exchange for Electric Vehicle charging roaming service ― Part 2: Use cases
EN 50696:2021, Contact interface for automated connection devices (ACD)
IETF RFC 768, User Datagram Protocol (August 1980)
IETF RFC 793, Transmission Control Protocol - DARPA Internet Program - Protocol Specification
(September 1981)
IETF RFC 2865, Remote Authentication Dial In User Service (RADIUS) (June 2000)
IETF RFC 2866, RADIUS Accounting (June 2000)
IETF RFC 3122, Extensions to IPv6 Neighbor Discovery for Inverse Discovery Specification (June 2001)
IETF RFC 3579, RADIUS (Remote Authentication Dial In User Service) Support For Extensible
Authentication Protocol (EAP) (September 2003)
IETF RFC 3748, Extensible Authentication Protocol (EAP) (June 2004)
IETF RFC 3986, Uniform Resource Identifier (URI): Generic Syntax (January 2005)
IETF RFC 4291, IP Version 6 Addressing Architecture (February 2006)
IETF RFC 4429, Optimistic Duplicate Address Detection (DAD) for IPv6 (April 2006)
IETF RFC 4443, Internet Control Message Protocol (ICMP v6) for the Internet Protocol version 6 (IPv6)
specification (March 2006)

1
Under preparation. Stage at the time of publication: IEC/CCDV 63119-2:2022.
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SIST EN ISO 15118-20:2022
ISO 15118-20:2022(E)
IETF RFC 4514, Lightweight Directory Access Protocol (LDAP): String Representation of Distinguished
Names (June 2006)
...