SIST EN ISO 15118-2:2016

SLOVENSKI STANDARD
kSIST FprEN ISO 15118-2:2015
01-oktober-2015
Cestna vozila - Komunikacijski vmesnik med vozilom in omrežjem - 2. del: Zahteve
za protokol omrežja in uporabe (ISO 15118-2:2015)
Road vehicles - Vehicle-to-grid communication Interface - Part 2: Network and
application protocol requirements (ISO 15118-2:2015)
Straßenfahrzeuge - Kommunikationsschnittstelle zwischen Fahrzeug und Ladestation -
Teil 2: Anforderungen an das Netzwerk- und Anwendungsprotokoll (ISO 15118-2:2014)
Véhicules routiers - Interface de communication entre véhicule et réseau électrique -
Partie 2: Exigences du protocole d'application et du réseau (ISO 15118-2:2014)
Ta slovenski standard je istoveten z: FprEN ISO 15118-2
ICS:
43.040.15 $YWRPRELOVNDLQIRUPDWLND Car informatics. On board
9JUDMHQLUDþXQDOQLãNLVLVWHPL computer systems
43.120 (OHNWULþQDFHVWQDYR]LOD Electric road vehicles
kSIST FprEN ISO 15118-2:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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kSIST FprEN ISO 15118-2:2015

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kSIST FprEN ISO 15118-2:2015

EUROPEAN STANDARD
FINAL DRAFT
FprEN ISO 15118-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

August 2015
ICS 43.040.15; 43.120
English Version
Road vehicles - Vehicle-to-grid communication Interface - Part 2:
Network and application protocol requirements (ISO 15118-
2:2015)
Véhicules routiers - Interface de communication entre Straßenfahrzeuge - Kommunikationsschnittstelle zwischen
véhicule et réseau électrique - Partie 2: Exigences du Fahrzeug und Ladestation - Teil 2: Anforderungen an das
protocole d'application et du réseau (ISO 15118-2:2014) Netzwerk- und Anwendungsprotokoll (ISO 15118-2:2014)
This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical
Committee CEN/TC 301.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN ISO 15118-2:2015 E
worldwide for CEN national Members.

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kSIST FprEN ISO 15118-2:2015
FprEN ISO 15118-2:2015 (E)
Contents Page
European foreword .3

2

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kSIST FprEN ISO 15118-2:2015
FprEN ISO 15118-2:2015 (E)
European foreword
The text of ISO 15118-2:2014 has been prepared by Technical Committee ISO/TC 22 “Road vehicles” of the
International Organization for Standardization (ISO) and has been taken over as FprEN ISO 15118-2:2015 by
Technical Committee CEN/TC 301 “Road vehicles” the secretariat of which is held by AFNOR.
This document is currently submitted to the Unique Acceptance Procedure.
Endorsement notice
The text of ISO 15118-2:2014 has been approved by CEN as FprEN ISO 15118-2:2015 without any
modification.
3

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kSIST FprEN ISO 15118-2:2015

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kSIST FprEN ISO 15118-2:2015

INTERNATIONAL ISO
STANDARD 15118-2
First edition
2014-04-01

Road vehicles — Vehicle-to-Grid
Communication Interface —
Part 2:
Network and application protocol
requirements
Véhicules routiers — Interface de communication entre véhicule et
réseau électrique —
Partie 2: Exigences du protocole d'application et du réseau




Reference number
ISO 15118-2:2014(E)
©
ISO 2014

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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO 2014
All rights reserved. Unless otherwise specified, 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
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2014 – All rights reserved

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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
Contents Page
Foreword . v
Introduction . vi
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 3
4  Symbols and abbreviated terms . 7
5  Conventions . 8
5.1  Definition of OSI based services . 8
5.2  Requirement structure . 8
5.3  Usage of RFC references . 8
5.4  Notation used for XML schema diagrams . 9
6  Document overview . 9
7  Basic requirements for V2G communication . 11
7.1  General information . 11
7.2  Service primitive concept of OSI layered architecture . 11
7.3  Security concept . 12
7.4  V2G communication states and data link handling . 21
7.5  Data Link Layer . 26
7.6  Network Layer . 26
7.7  Transport Layer . 28
7.8  V2G Transfer Protocol . 32
7.9  Presentation Layer . 36
7.10  Application Layer . 46
8  Application Layer messages . 55
8.1  General information and definitions . 55
8.2  Protocol handshake definition . 56
8.3  V2G Message Definition . 60
8.4  V2G Communication Session and BodyElement Definitions . 62
8.5  Complex data types . 104
8.6  Identification Modes and Message Set definitions . 137
8.7  V2G communication timing . 170
8.8  Message sequencing and error handling . 184
8.9  Request-Response Message Sequence examples . 206
Annex A (informative) Mapping of Part 1 use case elements . 214
Annex B (informative) Mapping of ISO 15118 message element names to SAE J2847/2 terms . 250
Annex C (normative) Schema definition . 254
Annex D (informative) Message examples . 278
Annex E (informative) Application of certificates . 299
Annex F (normative) Certificate profiles . 313
Annex G (informative) Encryption for the Distribution of Secret Keys . 321
Annex H (normative) Specification of Identifiers . 323
Annex I (informative) Message sequencing for renegotiation . 326
Annex J (informative) Overview on XML Signatures . 330
© ISO 2014 – All rights reserved iii

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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
Annex K (informative) Summary of requirements . 334
Bibliography . 341

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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
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
ISO documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO 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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT)
see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical
and electronic equipment.
ISO 15118-2 was developed in conjunction with IEC TC 69, Electric road vehicles and electric industrial
trucks.
ISO 15118 consists of the following parts, under the general title Road vehicles — Vehicle-to-Grid
Communication Interface:
 Part 1: General information and use-case definition
 Part 2: Network and application protocol requirements
1
 Part 3: Physical and data link layer requirements

1
To be published.
© ISO 2014 – All rights reserved v

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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
Introduction
The pending energy crisis and necessity to reduce greenhouse gas emissions has led the vehicle
manufacturers to a very significant effort to reduce the energy consumption of their vehicles. They are
presently developing vehicles partly or completely propelled by electric energy. Those vehicles will reduce the
dependency on oil, improve the global energy efficiency and reduce the total CO emissions for road
2
transportation if the electricity is produced from renewable sources. To charge the batteries of such vehicles,
specific charging infra-structure is required.
Much of the standardization work on dimensional and electrical specifications of the charging infrastructure
and the vehicle interface is already treated in the relevant ISO or IEC groups. However the question of
information transfer between the EV and the EVSE has not been treated sufficiently.
Such communication is necessary for the optimization of energy resources and energy production systems so
that vehicles can recharge in the most economical or most energy efficient way. It is also required to develop
efficient and convenient billing systems in order to cover the resulting micro-payments. The necessary
communication channel may serve in the future to contribute to the stabilization of the electrical grid as well as
to support additional information services required to operate electric vehicles efficiently and economically.
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kSIST FprEN ISO 15118-2:2015
INTERNATIONAL STANDARD ISO 15118-2:2014(E)

Road vehicles — Vehicle-to-Grid Communication Interface —
Part 2: Network and application protocol requirements
1 Scope
This part of ISO 15118 specifies the communication between battery electric vehicles (BEV) or plug-in hybrid
electric vehicles (PHEV) and the Electric Vehicle Supply Equipment. The application layer message set
defined in this part of ISO 15118 is designed to support the energy transfer from an EVSE to an EV. ISO
15118-1 contains additional use case elements (Part 1 Use Case Element IDs: F4 and F5) describing the
bidirectional energy transfer. The implementation of these use cases requires enhancements of the
application layer message set defined herein. The definitions of these additional requirements will be subject
of the next revision of this International Standard.
The purpose of this part of ISO 15118 is to detail the communication between an EV (BEV or a PHEV) and an
EVSE. Aspects are specified to detect a vehicle in a communication network and enable an Internet Protocol
(IP) based communication between EVCC and SECC.


Key
1 Scope of ISO/IEC FDIS 15118-2:2013(E)
2 Message definition considers use cases defined for communication between SECC to SA
Figure 1 — Communication relationship among EVCC, SECC and secondary actor
This part of ISO 15118 defines messages, data model, XML/EXI based data representation format, usage of
V2GTP, TLS, TCP and IPv6. In addition, it describes how data link layer services can be accessed from a
layer 3 perspective. The Data Link Layer and Physical Layer functionality is described in ISO 15118-3.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 3166-1, Codes for the representation of names of countries and their subdivisions ― Part 1: Country
codes
ISO 15118-1, Road vehicles ― Vehicle to grid communication interface ― Part 1: General information and
use-case definition
IEC 61851-1, Electric vehicle conductive charging system ― Part 1: General requirements (Ed 2.0 2010)
IEC 61851-22, Electric vehicle conductive charging system - Part 22: AC electric vehicle charging station
IEC CDV 61851-23, Electric vehicle conductive charging system - Part 23: D.C. electric vehicle charging
station (Ed 1.0 2012)
IEC 62196, Plugs, socket-outlets, vehicle connectors and vehicle inlets - Conductive charging of electric
vehicles
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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
W3C EXI 1.0, Efficient XML Interchange (EXI) Format 1.0, W3C Recommendation (March 2011)
W3C XML Signature Syntax and Processing Version 1.1, - W3C Recommendation (April 2013)
IETF RFC 768, User Datagram Protocol (August 1980)
IETF RFC 793, Transmission Control Protocol - DARPA Internet Program - Protocol Specification (September
1981)
IETF RFC 1981, Path MTU Discovery for IP version 6 (August 1996)
IETF RFC 2460, Internet Protocol, Version 6 (IPv6) Specification (December 1998)
IETF RFC 6960, X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP (June
2013)
IETF RFC 3122, Extensions to IPv6 Neighbor Discovery for Inverse Discovery Specification (June 2001)
IETF RFC 3315, Dynamic Host Configuration Protocol for IPv6 (DHCPv6) (July 2003)
IETF RFC 3484, Default Address Selection for Internet Protocol version 6 (IPv6) (February 2003)
IETF RFC 6582, The NewReno Modification to TCP's Fast Recovery Algorithm (April 2012)
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)
IETF RFC 4861, Neighbor Discovery for IP version 6 (IPv6) (September 2007)
IETF RFC 4862, IPv6 Stateless Address Autoconfiguration (September 2007)
IETF RFC 5095, Deprecation of Type 0 Routing Headers in IPv6 (December 2007)
IETF RFC 5116, An Interface and Algorithms for Authenticated Encryption (January 2008)
IETF RFC 5234, Augmented BNF for Syntax Specifications: ABNF (January 2008)
IETF RFC 5246, The Transport Layer Security (TLS) Protocol Version 1.2 (August 2008)
IETF RFC 5280, Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL)
Profile (May 2008)
IETF RFC 5289, TLS Elliptic Curve Cipher Suites with SHA-256/384 and AES Galois Counter Mode (GCM)
(August 2008)
IETF RFC 5480, Elliptic Curve Cryptography Subject Public Key Information (March 2009)
IETF RFC 5722, Handling of Overlapping IPv6 Fragments (December 2009)
IETF RFC 6066, Transport Layer Security (TLS) Extensions: Extension Definitions (January 2011)
IETF RFC 6106, IPv6 Router Advertisement Options for DNS Configuration (November 2010)
IETF RFC 6961, The Transport Layer Security (TLS) Multiple Certificate Status Request Extension (June
2013)
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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
IANA Service&PortRegistry, Service Name and Transport Protocol Port Number Registry [viewed 2011-01-
16], Available from: http://www.iana.org/assignments/service-names-port-numbers/service-names-port-
numbers.xml
NIST FIPS PUB 180-4: Secure Hash Standard (SHS) (March 2012)
NIST Special Publication 800-56A: Recommendation for Pair-Wise Key Establishment Schemes Using
Discrete Logarithm Cryptography (Revised) (March 2007)
NIST Special Publication 800-38A: Recommendation for Block Cipher Modes of Operation - Methods and
Techniques (2001)
3 Terms and definitions
For the purposes of this document, the terms in ISO 15118-1 and the following apply.
3.1
Basic Charging
BC
charging phase during a charging session controlled by IEC 61851-1 only
3.2
charging limits
set of physical constraints (e.g. voltage, current, energy, power) that is negotiated during a V2G
Communication Session for a charging session
3.3
Communication Setup Timer
Timer monitoring the time from plug-in until the Session Setup message
3.4
Contract Certificate
certificate issued to EVCC either by V2G Root CA or by Sub-CA, which is used in XML Signatures in
application layer so that SECC or secondary actor can verify the Contract issued to the EVCC and signatures
issued by the EVCC
3.5
CP State
Control Pilot (Vehicle) State according to IEC 61851-1 signalled on Control Pilot Line
3.6
credentials
anything that provides the basis for confidence, belief, credit, etc.
EXAMPLE Examples include certificates, passwords, user names etc.
3.7
Data Link Setup
setup phase for establishing the data link
Note 1 to entry: Entry Condition: Any valid control pilot signal according to IEC 61851-1; Exit Condition: D-
LINK_READY.indication(DLINKSTATUS=LinkEstablished).
3.8
Distinguished Encoding Rules = ASN-1 encoding rule
DER
method for encoding a data object, such as an X.509 certificate, to be digitally signed or to have its signature
verified
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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
3.9
global address
IP address with unlimited scope
3.10
High Level Communication Charging
HLC-C
charging phase during a charging session controlled by ISO 15118
3.11
link-local address
IP address with link-only scope that can be used to reach neighbouring interfaces attached to the same link
3.12
Identification Mode
mandatory and optional messages and parameters with respect to charging scenarios using External
Identification Means (EIM) and charging scenarios using Plug and Charge (PnC) for identification
Note 1 to entry: An Identification Mode covers a set of similar charging scenarios for a specific identification means.
3.13
(IP) address
IP-layer identifier for an interface or a set of interfaces
3.14
Maximum Transfer Unit
MTU
maximum size (in bytes) of the largest protocol data unit that the Data Link Layer that can be pass onwards
3.15
Message Set
set of mandatory V2G messages and parameters for the EVCC or SECC covering one or multiple use case
elements
3.16
Message Timer
Timer monitoring the exchange of a Request-Response-Pair
3.17
network segment
collection of devices that can exchange data on Data Link Layer level directly via Data Link Addresses
EXAMPLE Ethernet: all devices which can see each other via MAC addresses.
3.18
node
device that implements IPv6
3.19
OEM Provisioning Certificate
certificate issued to the EVCC, so that a Contract Certificate can be securely requested and received from a
secondary actor
3.20
Performance Time
non-functional timing requirement defining the time a V2G Entity shall not exceed when executing or
processing certain functionality
Note 1 to entry: This is a fixed time value.
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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
3.21
private environment
area with (physical) access limited to a small number of vehicles (EVs), which may be a private parking
garage or a garage / parking lot of a company with its own EV fleet, where one or several private wall-box(es)
are used instead of public charging stations as EVSE, and where in order to keep the private wall-box simple
and cheap in production and operation it is allowed to stay offline permanently, which allows a private wall-box
to use leaf certificates with a longer maximum validity than allowed for public charging stations and using a
private root certificate which is different to the V2G root certificates and which has to be installed into each EV
that is allowed to charge within this specific private environment, resulting in a limited number of EVs
belonging to one private environment, the difference to a “trusted environment” being that in a (pure; i.e. not
additionally “trusted”) private environment TLS and the corresponding data encryption at connection level is
always used, and solely certificate handling is simplified for the private wall-box (EVSE) since it may stay
offline permanently, resulting in unrestricted certificate validity periods, shorter certificate chain length, omitting
OCSP, and an additional “pairing mode”
3.22
Identification Mode
group of mandatory and optional Message Sets covering a set of similar charging scenarios for a specific
identification means
3.23
renegotiation
messaging for updating the agreement on the charging schedule between EV and EVSE during a V2G
Communication Session by retransmitting the parameters SASchedule and ChargingProfile
3.24
Request-Response Message Pair
request message and the corresponding response message
3.25
Request-Response Message Sequence
predefined sequence of Request-Response Message Pairs
3.26
SDP Client
V2G Entity that uses the SDP server to get configuration information about the SECC to be able to access the
SECC
3.27
SDP Server
V2G Entity providing configuration information for accessing the SECC
3.28
SECC Certificate
certificate issued to SECC either by V2G Root CA or by Sub-CA, which is used in TLS so that the EVCC can
verify the authenticity of the SECC
3.29
Sequence Timer
Timer monitoring a Request-Response Message Sequence
3.30
Sub-CA
subordinate certificate authority who issues SECC Certificates and/or Contract Certificates on behalf of the
V2G Root CA
Note 1 to entry: The ability of issuing the certificates are delegated from V2G Root CA, and V2G Root CA can revoke the
Sub-CA at any time.
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kSIST FprEN ISO 15118-2:2015
ISO 15118-2:2014(E)
3.31
Sub-CA Certificate
certificate issued to Sub-CA
3.32
TCP_DATA
socket/interface for data transfer based on TCP connection
3.33
Timeout
timing requirement defining the time a V2G Entity monitors the communication system for a certain event to
occur
Note 1 to entry: If the specified time is exceeded the respective V2G Entity initiates the related error handling. This is a
fixed time value.
3.34
Timer
device or piece of software used in an implementation for measuring time.
Note 1 to entry: Depending on the specific use case a timer is used to trigger certain system events as well.
3.35
Trusted Environment
closed user group (e. g. members of car sharing system) with some pre-distributed token for access to the
SECC charging service (e.g. key to home garage, RFID token for car sharing), which is something where a
person or instance is responsible for, for example (not limited to) a p
...