ISO/SAE FDIS 12906

Road vehicles — Test procedures for electric vehicles to determine charging performance

This document facilitates clear and consistent comparisons of realistic charging capabilities of EVs via commercially available electric vehicle supply equipment. It provides details about test conditions, test methods and test processes derived from typical use cases. Furthermore, requirements regarding the information to the user are specified.

Véhicules routiers — Procédures d'essai des véhicules électriques pour déterminer les performances de charge

General Information

• Status: Not Published
• ICS: 43.120 - Electric road vehicles
• Technical Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Drafting Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 27-Aug-2024
• Completion Date: 27-Aug-2024

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/SAE FDIS
ISO/TC 22/SC 37
Road vehicles — Test procedures
Secretariat: DIN
for electric vehicles to determine
Voting begins on:
charging performance
2024-08-27
Véhicules routiers — Procédures d'essai des véhicules électriques
Voting terminates on:
pour déterminer les performances de charge
2024-10-22
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/SAE FDIS
ISO/TC 22/SC 37
Road vehicles — Test procedures
Secretariat: DIN
for electric vehicles to determine
Voting begins on:
charging performance
Véhicules routiers — Procédures d'essai des véhicules électriques
Voting terminates on:
pour déterminer les performances de charge
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
© ISO/SAE International 2024
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
reproduced, or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
IN ADDITION TO THEIR EVALUATION AS
the internet or an intranet, without prior written permission. Permission can be requested from either ISO or SAE International at
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
the respective address below or ISO’s member body in the country of the requester.
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
ISO copyright office SAE International
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
CP 401 • Ch. de Blandonnet 8 400 Commonwealth Dr.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
CH-1214 Vernier, Geneva Warrendale, PA, USA 15096
MADE IN NATIONAL REGULATIONS.
Phone: [phone] Phone: [phone] (inside USA and Canada)
Phone: [phone] (outside USA)
Fax: [phone]
Email: [e-mail] Email: [e-mail]
Website: www.iso.org Website: www.sae.org
Published in Switzerland by ISO, published in the USA by SAE International
Reference number
© ISO/SAE International 2024 – All rights reserved
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 General . 3
6 Test cases and general requirements . 4
6.1 Overview of test cases .4
6.2 General requirements .4
6.2.1 Vehicle manufacturer specifications .4
6.2.2 EV run-in.5
6.2.3 Measurement tolerances and accuracies .5
6.2.4 Determination of indicated SOC .5
6.2.5 Determination of recharged electric range by recharged energy . .6
6.2.6 Determination of charging efficiency .8
6.2.7 Determination of maximum charging power .9
6.3 Test procedures .10
6.3.1 Test procedure for test case normal charging .10
6.3.2 Test procedure for test case fast charging .11
7 Vehicle operator information . 14
Annex A (informative) Fast charging at low ambient temperature .15
Annex B (informative) Heavy duty vehicles. 19
Bibliography .23

© ISO/SAE International 2024 – All rights reserved
iii
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.
SAE International is a global association of more than 128,000 engineers and related technical experts in
the aerospace, automotive and commercial-vehicle industries. Standards from SAE International are used to
advance mobility engineering throughout the world. The SAE Technical Standards Development Program is
among the organization's primary provisions to those mobility industries it serves aerospace, automotive,
and commercial vehicle. These works are authorized, revised, and maintained by the volunteer efforts of
more than 9,000 engineers, and other qualified professionals from around the world. SAE subject matter
experts act as individuals in the standards process, not as representatives of their organizations. Thus, SAE
standards represent optimal technical content developed in a transparent, open, and collaborative process.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1 and the SAE Executive Standards Committee Policy. 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).
ISO and SAE draw attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO and SAE take no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO and SAE [had/had not]
received notice of (a) patent(s) which may be required to implement this document. However, implementers
are cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO and SAE shall not be held responsible for identifying any or
all such patent rights.
SAE Executive Standards Committee Rules provide that: “This document is published to advance the state
of technical and engineering sciences. The use of this document is entirely voluntary, and its applicability
and suitability for any particular use, including any patent infringement arising therefrom, is the sole
responsibility of the user.”
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.
This document was jointly prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 37,
Electrically propelled vehicles and SAE Hybrid – EV Committee.
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. Alternatively, to provide
feedback on this document, please visit http://standards.sae.org/PRODCODE.

© ISO/SAE International 2024 – All rights reserved
iv
Introduction
The test procedures were derived from typical use cases. Both test procedures and use cases were
established based on the following premises:
— Comparability: the charging performance determined according to this document enables a comparison
of the performance of different electrically propelled vehicles in realistic scenarios. The application of
specific optimizing features to improve the charging performance (e.g. battery thermal preconditioning
based on navigation systems) is taken into account.
— Imitability and plausibility: the possibility to retrace the determined charging performance in principle.
— Reproducibility: the specified test conditions, test methods and test processes ensure reproducibility
within common measurement tolerances. It was important to leave as little space as possible for
inadvertent deviations or manipulations.
The test results serve for information purposes, e.g. for vehicle operator interfaces or manufacturer
specifications.
© ISO/SAE International 2024 – All rights reserved
v
FINAL DRAFT International Standard ISO/SAE FDIS 12906:2024(en)
Road vehicles — Test procedures for electric vehicles to
determine charging performance
1 Scope
This document specifies test procedures to determine the charging performance of electric vehicles. This
document facilitates clear and consistent comparisons of realistic charging capabilities of electrically
propelled vehicles (EVs) via commercially available electric vehicle supply equipment. It provides details
about test conditions, test methods and test processes derived from typical use cases. Furthermore, it
specifies requirements regarding the information for the vehicle operator.
This document is applicable to EVs, including plug-in hybrid EVs.
This document does not provide requirements for mopeds and motorcycles.
Unless specified otherwise, all test procedures can be applied to AC, DC or wireless charging methods.
NOTE Specifications for reverse power transfer are under consideration.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
applicable driving test
ADT
driving test provision including test procedure and requirements for homologation in the intended market
EXAMPLE Commission Regulation (EU) 2017/1151; SAE J1634.
3.2
ADT schedule
collection of one or more driving cycle(s)
EXAMPLE Worldwide light-duty test cycle; urban dynamometer driving schedule.
3.3
DC electric energy consumption
EC
DC
energy withdrawn per distance from the RESS (3.10) for operating the EV (3.5) as measured by the combined
test procedure defined in the ADT (3.1)
Note 1 to entry: Charging losses due to AC charging are excluded.
No
...

2024-05-27
ISO/TC 22/SC 37/WG 6
Secretariat: DIN
Date: 2024-08-12
Road vehicles — Test procedures for electric vehicles to determine
charging performance
Véhicules routiers — Procédures d'essai des véhicules électriques pour déterminer les performances de charge
FDIS stage
© ISO/SAE 2024
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
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO/SAE International 2024 – All rights reserved
ii
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 General. 4
6 Test cases and general requirements . 4
6.1 Overview of test cases . 4
6.2 General requirements . 5
6.2.1 Vehicle manufacturer specifications . 5
6.2.2 EV run-in . 5
6.2.3 Measurement tolerances and accuracies . 5
6.2.4 Determination of indicated SOC . 6
6.2.5 Determination of recharged electric range by recharged energy . 6
6.2.6 Determination of charging efficiency . 10
6.2.7 Determination of maximum charging power . 12
6.3 Test procedures . 12
6.3.1 Test procedure for test case normal charging . 12
6.3.2 Test procedure for test case fast charging . 13
7 Vehicle operator information. 17
Annex A (informative) Fast charging at low ambient temperature . 18
A.1 General. 18
A.2 Options for low ambient temperature test procedure . 18
A.3 Process steps of low ambient test procedure . 19
A.3.1 Relocations . 19
A.3.2 Adjustment of indicated SOC . 20
A.3.3 Soaking phase . 20
A.3.4 Options for preparation phase . 21
A.3.5 Charging phase . 21
A.3.6 Determination of ratio . 22
Annex B (informative) Heavy duty vehicles . 23
B.1 General. 23
B.2 Test procedures for heavy duty vehicles. 23
B.2.1 Intermediate charging . 23
B.2.2 Full charging . 25
B.3 Vehicle operator information. 26
Bibliography . 28

© ISO/SAE International 2024 – All rights reserved
iii
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.
SAE International is a global association of more than 128,000 engineers and related technical experts in the
aerospace, automotive and commercial-vehicle industries. Standards from SAE International are used to
advance mobility engineering throughout the world. The SAE Technical Standards Development Program is
among the organization's primary provisions to those mobility industries it serves aerospace, automotive, and
commercial vehicle. These works are authorized, revised, and maintained by the volunteer efforts of more
than 9,000 engineers, and other qualified professionals from around the world. SAE subject matter experts act
as individuals in the standards process, not as representatives of their organizations. Thus, SAE standards
represent optimal technical content developed in a transparent, open, and collaborative process.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1 and the SAE Executive Standards Committee Policy. 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/directiveswww.iso.org/directives).).
ISO and SAE draw attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO and SAE take no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO and SAE [had/had not]
received notice of (a) patent(s) which may be required to implement this document. However, implementers
are cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patentswww.iso.org/patents. ISO and SAE shall not be held responsible
for identifying any or all such patent rights.
SAE Executive Standards Committee Rules provide that: “This document is published to advance the state of
technical and engineering sciences. The use of this document is entirely voluntary, and its applicability and
suitability for any particular use, including any patent infringement arising therefrom, is the sole
responsibility of the user.”
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.htmlwww.iso.org/iso/foreword.html.
This document was jointly prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 37,
Electrically propelled vehicles and SAE Hybrid – EV Committee.
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.htmlwww.iso.org/members.html.
Alternatively, to provide feedback on this document, please visit
http://standards.sae.org/PRODCODEhttp://standards.sae.org/PRODCODE.
© ISO/SAE International 2024 – All rights reserved
iv
Introduction
The test procedures were derived from typical use cases. Both test procedures and use cases were established
based on the following premises:
— — Comparability: the charging performance determined according to this document enables a
comparison of the performance of different electrically propelled vehicles in realistic scenarios. The
application of specific optimizing features to improve the charging performance (e.g. battery thermal
preconditioning based on navigation systems) is taken into account.
— — Imitability and plausibility: the possibility to retrace the determined charging performance in
principle.
— — Reproducibility: the specified test conditions, test methods and test processes ensure reproducibility
within common measurement tolerances. It was important to leave as little space as possible for
inadvertent deviations or manipulations.
The test results serve for information purposes, e.g. for vehicle operator interfaces or manufacturer
specifications.
© ISO/SAE International 2024 – All rights reserved
v
Road vehicles — Test procedures for electric vehicles to determine
charging performance
1 Scope
This document specifies test procedures to determine the charging performance of electric vehicles. This
document facilitates clear and consistent comparisons of realistic charging capabilities of electrically
propelled vehicles (EVs) via commercially available electric vehicle supply equipment. It provides details
about test conditions, test methods and test processes derived from typical use cases. Furthermore, it specifies
requirements regarding the information for the vehicle operator.
This document is applicable to EVs, including plug-in hybrid EVs.
This document does not provide requirements for mopeds and motorcycles.
Unless specified otherwise, all test procedures can be applied to AC, DC or wireless charging methods.
NOTE Specifications for reverse power transfer are under consideration.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/
3.1
applicable driving test
ADT
driving test provision including test procedure and requirements for homologation in the intended market
EXAMPLE Commission Regulation (EU) 2017/1151; SAE J1634.
3.2
ADT schedule
collection of one or more driving cycle(s)
EXAMPLE Worldwide light-duty test cycle; urban dynamometer driving schedule.
3.3
DC electric energy consumption
EC
DC
energy withdrawn per distance from the RESS (3.10(3.10)) for operating the EV (3.5(3.5)) as measured by the
combined test procedure defined in the ADT (3.1(3.1))
Note 1 to entry: Charging losses due to AC charging are excluded.
© ISO/SAE International 2024 – All rights reserved
Note 2 to entry: The unit of the distance referred to depends on the specification in the ADT (3.1).
Note 3 to entry: In the worldwide light-duty test cycle, the consumption of the combined test procedure is called
ECDC,WLTC.
3.4
discharged battery energy
DBE
energy removed from the RESS (3.10(3.10)) during
...