ISO 12405-4:2018

INTERNATIONAL ISO
STANDARD 12405-4
First edition
2018-07
Electrically propelled road vehicles —
Test specification for lithium-ion
traction battery packs and systems —
Part 4:
Performance testing
Véhicules routiers à propulsion électrique — Spécifications d'essai
pour packs et systèmes de batterie de traction aux ions lithium —
Partie 4: Essais de performance
Reference number
©
ISO 2018
© ISO 2018
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 4
4.1 Symbols . 4
4.2 Abbreviated terms . 5
5 General requirements . 6
5.1 General conditions . 6
5.1.1 Prerequisites . 6
5.1.2 Accuracy of measurement equipment and measured values. 6
5.2 Test sequence plan . 7
5.3 Tests . 7
5.4 Preparation of battery pack and system for bench testing . 7
5.4.1 Preparation of battery pack . 7
5.4.2 Preparation of battery system . 8
6 General tests . 8
6.1 Preconditioning cycles . 8
6.1.1 Purpose . 8
6.1.2 Test procedures. 8
6.2 Standard Cycle (SC) . 9
6.2.1 Purpose . 9
6.2.2 Test procedures. 9
7 Performance tests .10
7.1 Energy and capacity at RT .10
7.1.1 Purpose .10
7.1.2 Test procedures.11
7.1.3 Determination of rated capacity .12
7.2 Energy and capacity at different temperatures and discharge rates .13
7.2.1 Purpose .13
7.2.2 Test procedure .13
7.2.3 Requirements .20
7.3 Power and internal resistance .20
7.3.1 Purpose .20
7.3.2 Pulse power characterization profile .20
7.3.3 Test procedure .27
7.3.4 Requirements .31
7.4 No load SOC loss .31
7.4.1 Purpose .31
7.4.2 Test procedure .32
7.4.3 Test sequence . . .33
7.4.4 Requirement .35
7.5 SOC loss at storage .35
7.5.1 Purpose .35
7.5.2 Test procedure .36
7.5.3 Test sequence . . .36
7.5.4 Requirement .36
7.6 Cranking power at low temperature .37
7.6.1 Purpose .37
7.6.2 Test procedure .37
7.6.3 Requirement .38
7.7 Cranking power at high temperature .38
7.7.1 Purpose .38
7.7.2 Test procedure .38
7.7.3 Requirement .39
7.8 Energy efficiency .40
7.8.1 Purpose .40
7.8.2 Test description .40
7.8.3 Test procedure .40
7.8.4 Requirement .42
7.8.5 Calculation example for energy efficiency test .42
7.9 Energy efficiency at fast charging .42
7.9.1 Purpose .42
7.9.2 Test procedure .42
7.9.3 Requirement .44
7.10 Cycle life .44
7.10.1 Purpose .44
7.10.2 Test procedure .45
7.10.3 Requirement .60
7.10.4 Calculation example for cycle life test for high-power battery system .61
Annex A (informative) Battery pack and system and overview on tests .62
Annex B (informative) Examples of data sheets for battery pack and system testing .
...