IEC 63119-2:2022

Information exchange for electric vehicle charging roaming service 
- Part 2: Use cases

IEC 63119-2:2022 specifies roaming use cases of information exchange between EV charging service providers (CSP), charging station operators (CSOs) and clearing house platforms through roaming endpoints. The elementary use cases defined in this document are designed to support the user to have access to the EV supply equipment which does not belong to the home-CSP.
IEC 63119 (all parts) is applicable to high-level communication involved in information exchange/interaction between different CSPs, as well as between a CSP and CSO with or without clearing house platform through the roaming endpoint.
IEC 63119 (all parts) does not specify the communication either between charging station (CS) and charging station operator (CSO) or between EV and CS.

Echange d'informations pour le service d'itinérance de la recharge des véhicules électriques - Partie 2: Cas d'utilisation

L'IEC 63119-2:2022 spécifie les cas d'utilisation en itinérance de l'échange d'informations entre les prestataires de services de recharge (CSP, Charging Service Providers) de VE, les opérateurs de bornes de charge (CSO, Charging Station Operators) et les plateformes d'échanges de données par le biais d'un nœud final d'itinérance. Les cas d'utilisation élémentaires définis dans le présent document sont conçus pour aider l'utilisateur à accéder au système d'alimentation pour VE qui n'appartient pas au CSP contractuel.
L'IEC 63119 (toutes les parties) s'applique aux communications de haut niveau dans le cadre des échanges d'informations/interactions entre les différents CSP, mais aussi entre un CSP et un CSO avec ou sans plateforme d'échange de données par le biais du nœud final d'itinérance.
L'IEC 63119 (toutes les parties) ne spécifie pas la communication entre la borne de charge (CS, Charging Station) et l'opérateur de bornes de charge (CSO) ni entre le VE et la CS.

General Information

• Status: Published
• Publication Date: 17-Oct-2022
• ICS: 43.120 - Electric road vehicles
• Technical Committee: TC 69 - Electrical power/energy transfer systems for electrically propelled road vehicles and industrial trucks
• Drafting Committee: WG 9 - TC 69/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 04-Nov-2022
• Completion Date: 18-Oct-2022

Standards Content (Sample)

IEC 63119-2
®

Edition 1.0 2022-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Information exchange for electric vehicle charging roaming service –
Part 2: Use cases

Échange d'informations pour le service d'itinérance de la recharge des véhicules
électriques –
Partie 2: Cas d'utilisation

IEC 63119-2:2022-10(en-fr)

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IEC 63119-2

®


Edition 1.0 2022-10




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Information exchange for electric vehicle charging roaming service –

Part 2: Use cases



Échange d'informations pour le service d'itinérance de la recharge des véhicules

électriques –

Partie 2: Cas d'utilisation















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 43.120 ISBN 978-2-8322-5829-3



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 63119-2:2022 © IEC 2022
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Abbreviated terms . 11
5 General requirements . 11
5.1 General . 11
5.2 System requirements . 11
5.2.1 General . 11
5.2.2 CSO system platform requirement . 12
5.2.3 CSP platform system requirement . 12
5.3 Communication requirements . 12
5.4 Cybersecurity requirements . 13
5.4.1 Data transmission security . 13
5.4.2 Role identification . 13
5.4.3 Information privacy protection . 13
5.4.4 Information sharing principle . 13
5.4.5 Encryption key usage and management . 13
5.4.6 Agreement sharing principle . 13
5.5 Unique identifier . 13
5.5.1 Requirements of the unique identifier. 13
5.5.2 Classification of the global ID . 13
5.5.3 Definition of the global identifier . 14
5.6 Identification method type . 14
5.7 Session and transaction . 15
5.7.1 General . 15
5.7.2 Session . 15
5.7.3 Transaction . 15
5.7.4 Service session flowchart diagram . 16
6 Architecture . 17
6.1 System architecture . 17
6.2 Actors and systems . 18
6.2.1 Definition of actors. 18
6.2.2 Systems actors . 19
6.3 Roaming function domain . 19
6.3.1 General . 19
6.3.2 General information exchange . 19
6.3.3 Tariff and pricing . 19
6.3.4 Energy transfer management . 19
6.3.5 Certification handling . 20
6.3.6 Support functions. 20
6.4 Clearing house function . 20
6.4.1 Transaction hub switch . 20
6.4.2 SDR reconciliation . 21
6.4.3 Settlement . 21
7 Use cases view . 21

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IEC 63119-2:2022 © IEC 2022 – 3 –
7.1 Use case hierarchy diagram . 21
7.2 Use case hierarchy layer . 22
7.2.1 Use case groups . 23
7.2.2 Use case list . 24
8 Use cases . 26
8.1 General information exchange . 26
8.1.1 UC1-1 Platform authentication . 26
8.1.2 UC1-2 Sites information exchange . 28
8.1.3 UC1-3 Sharing dynamic status of EV supply equipment . 29
8.2 Tariff and pricing . 30
8.2.1 UC2-1 Inform home-CSP on tariff information . 30
8.2.2 UC2-2 home-CSP request tariffs from visited-CSO . 31
8.3 Energy transfer management . 31
8.3.1 UC3-1 Start charging roaming locally at the EV supply equipment . 31
8.3.2 UC3-2 Start charging roaming remotely from home-CSP. 33
8.3.3 UC3-3 Start charging roaming by PnC . 35
8.3.4 UC3-4 Stop energy transfer session via home-CSP . 37
8.3.5 UC3-5 Complete a charging service transaction in a roaming scenario . 38
8.3.6 UC3-6 Collect dynamic charging information. 38
8.3.7 UC3-7 Charge plan exchange . 39
8.3.8 UC3-8 Reservation of an EV supply equipment . 40
8.3.9 UC3-9 SDR information exchange . 42
8.3.10 UC3-10 Update charge plan by visited-CSO . 43
8.4 Credentials handling . 43
8.4.1 UC4-1 Support online identification of the user at a visited-CSO . 43
8.4.2 UC4-2 Pre-distribution of information for offline identification of the user
at a visited-CSO . 45
8.5 Supporting functions . 45
8.5.1 UC5-1 Maintenance/outage information . 45
8.5.2 UC5-2 Emergency cable unlocking after charging service activated . 47
8.5.3 UC5-3 Emergency cable unlocking for charging service activation failed . 48
Annex A (informative) Roaming scenarios . 50
A.1 Roaming scenario 1 – Roaming by using QR code scanning . 50
A.1.1 Roaming scenario description . 50
A.1.2 Roaming scenario business sequence diagram . 51
A.1.3 List of elementary use cases . 52
A.2 Roaming scenario 2 – Charging site navigation service . 53
A.2.1 Roaming scenario description . 53
A.2.2 Roaming scenario business sequence diagram . 53
A.3 Roaming scenario 3 – Roaming by using RFID card . 53
A.3.1 Roaming scenario description . 53
A.3.2 List of elementary use cases . 54
Annex B (informative) Service session data . 55
B.1 Service session data diagram . 55
B.2 SDR general structure. 56
Bibliography . 57

Figure 5-1 – Service session structure . 15

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– 4 – IEC 63119-2:2022 © IEC 2022
Figure 5-2 – Relationship between session and transaction . 16
Figure 5-3 – Diagram of service session . 17
Figure 6-1 – System architecture . 18
Figure 6-2 – Clearing house function . 20
Figure 6-3 – Clearing house . 21
Figure 7-1 – Use case hierarchy diagram . 22
Figure 7-2 – Use case hierarchy diagram of charging roaming . 23
Figure 7-3 – Use domain overview of the 1-Layer in the hierarchy diagram . 24
Figure 7-4 – Use case groups overview . 24
Figure 8-1 – Use case sequence diagram for platform authentication . 28
Figure 8-2 – Use case sequence diagram for Start charging roaming locally at the EV
supply equipment . 33
Figure 8-3 – Use case sequence diagram for Start charging roaming remotely from

home-CSP . 35
Figure 8-4 – Use case sequence diagram for Start charging roaming by PnC . 37
Figure A.1.1 – Roaming by using QR code scanning . 50
Figure A.1.2 – Sequence diagram . 52
Figure A.2.1 – Charging site navigation service . 53
Figure B.1 – Data diagram of service session . 55

Table 1 – System actor categories . 12
Table 2 – Structure of the global identifier . 14
Table 3 – Definition of the global identifier syntax . 14
Table 4 – Session categories . 15
Table 5 – Definition of actors . 18
Table 6 – Use case group index and description . 23
Table 7 – Use case list . 25
Table 8 – Use case description for platform authentication . 26
Table 9 – Use case description for Sites information exchange . 28
Table 10 – Use case description for sharing dynamic status of EV supply equipment . 29
Table 11 – Use case description for Inform home-CSP on tariff information . 30
Table 12 – Use case description for home-CSP request tariffs from visited-CSO . 31
Table 13 – Use case description for Start charging roaming locally at the EV supply
equipment . 31
Table 14 – Use case description for Start charging roaming remotely from home-CSP . 34
Table 15 – Use case description for Start charging roaming by PnC . 36
Table 16 – Use case description for Stop energy transfer session via home-CSP . 37
Table 17 – Use case description for Complete a charging service transaction in a
roaming scenario . 38
Table 18 – Use case description for Collect dynamic charging information . 39
Table 19 – Use case description for Charge plan exchange . 40
Table 20 – Use case description for Reservation of an EV supply equipment . 40
Table 21 – Use case description for SDR information exchange . 42
Table 22 – Use case description for Update charge plan by visited-CSO . 43

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IEC 63119-2:2022 © IEC 2022 – 5 –
Table 23 – Use case description for Support online identification of the user at a
visited-CSO . 44
Table 24 – Use case description for Pre-distribution of information for offline

identification of the user at a visited-CSO . 45
Table 25 – Use case description for Maintenance/outage information . 46
Table 26 – Use case description for Emergency cable unlocking after charging service
activated . 47
Table 27 – Use case description for Emergency cable unlocking for charging service
activation failed . 48
Table A.1 – Roaming scenario: peer-to-peer roaming by scanning EV supply
equipment QR code . 51
Table A.2 – Elementary use cases . 52
Table A.3 – Peer-to-peer roaming for charging service using RFID card . 53
Table A.4 – Elementary use cases . 54
Table B.1 – SDR general structure . 56

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– 6 – IEC 63119-2:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INFORMATION EXCHANGE FOR ELECTRIC
VEHICLE CHARGING ROAMING SERVICE –

Part 2: Use cases

FOREWORD
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IEC 63119-2 has been prepared by IEC technical committee 69: Electrical power/energy
transfer systems for electrically propelled road vehicles and industrial trucks. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
69/847/FDIS 69/862/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

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IEC 63119-2:2022 © IEC 2022 – 7 –
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 63119 series, published under the general title Information exchange
for electric vehicle charging roaming service, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
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– 8 – IEC 63119-2:2022 © IEC 2022
INFORMATION EXCHANGE FOR ELECTRIC
VEHICLE CHARGING ROAMING SERVICE –

Part 2: Use cases



1 Scope
This part of IEC 63119 specifies roaming use cases of information exchange between EV
charging service providers (CSP), charging station operators (CSOs) and clearing house
platforms through roaming endpoints. The elementary use cases defined in this document are
designed to support the user to have access to the EV supply equipment which does not belong
to the home-CSP.
IEC 63119 (all parts) is applicable to high-level communication involved in information
exchange/interaction between different CSPs, as well as between a CSP and CSO with or
without clearing house platform through the roaming endpoint.
IEC 63119 (all parts) does not specify the communication either between charging station (CS)
and charging station operator (CSO) or between EV and CS.
2 Normative references
The following documents are referred to in the text in such a way that some or all of the
...