SIST EN IEC 62984-2:2021

High Temperature secondary Batteries - Part 2: Safety requirements and tests

This part of IEC 62984 specifies safety requirements and test procedures for high-temperature
batteries for mobile and/or stationary use and whose rated voltage does not exceed 1 500 V.
This document does not cover aircraft batteries, which are covered by IEC 60952 (all parts),
and batteries for the propulsion of electric road vehicles, covered by IEC 61982 (all parts).
NOTE High-temperature batteries are electrochemical systems whose cells' internal minimum operating
temperature is above 100 °C.

Hochtemperatur-Sekundärbatterien - Teil 2: Sicherheitsanforderungen und Prüfungen

Batteries d'accumulateur à haute temperature - Partie 2: Prescriptions de sécurité et essais

L'IEC 62984-2:2020 spécifie les exigences de sécurité et procédures d'essai relatives aux batteries d'accumulateurs à haute température pour usage mobile et/ou fixe et dont la tension assignée ne dépasse pas 1 500 V.
Le présent document ne couvre pas les batteries d'aéronefs, couvertes par l'IEC 60952 (toutes les parties), et les batteries pour la propulsion des véhicules routiers électriques, couvertes par l'IEC 61982 (toutes les parties).

Visokotemperaturne sekundarne baterije - 2. del: Varnostne zahteve in preskusi

General Information

• Status: Published
• Publication Date: 21-Jan-2021
• ICS: 29.220.20 - Acid secondary cells and batteries
• Technical Committee: ISCB - Secondary cells and batteries
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-Jan-2021
• Due Date: 19-Mar-2021
• Completion Date: 22-Jan-2021
• Ref Project: EN IEC 62984-2:2020 - High-temperature secondary batteries - Part 2: Safety requirements and tests

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62984-2:2021
01-februar-2021
Visokotemperaturne sekundarne baterije - 2. del: Varnostne zahteve in preskusi
High Temperature secondary Batteries - Part 2: Safety requirements and tests
Batteries d'accumulateur à haute temperature - Partie 2: Prescriptions de sécurité et
essais
Ta slovenski standard je istoveten z: EN IEC 62984-2:2020
ICS:
29.220.20 Kislinski sekundarni členi in Acid secondary cells and
baterije batteries
SIST EN IEC 62984-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62984-2:2021

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SIST EN IEC 62984-2:2021


EUROPEAN STANDARD EN IEC 62984-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2020
ICS 29.220.20

English Version
High-temperature secondary batteries - Part 2: Safety
requirements and tests
(IEC 62984-2:2020)
Batteries d'accumulateurs à haute température - Partie 2: Hochtemperatur-Sekundärbatterien - Teil 2:
Exigences de sécurité et essais Sicherheitsanforderungen und Prüfungen von Zellen und
(IEC 62984-2:2020) Batterien
(IEC 62984-2:2020)
This European Standard was approved by CENELEC on 2020-04-15. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62984-2:2020 E

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SIST EN IEC 62984-2:2021
EN IEC 62984-2:2020 (E)
European foreword
The text of document 21/1032/FDIS, future edition 1 of IEC 62984-2, prepared by IEC/TC 21
"Secondary cells and batteries" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62984-2:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-01-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-04-15
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62984-2:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60068-2-64 NOTE Harmonized as EN 60068-2-64
IEC 60068-2-75 NOTE Harmonized as EN 60068-2-75
IEC 60721-3-2 NOTE Harmonized as EN IEC 60721-3-2
IEC 60952 (series) NOTE Harmonized as EN 60952 (series)
IEC 61982 (series) NOTE Harmonized as EN 61982 (series)
IEC 62262 NOTE Harmonized as EN 62262
IEC 61373 NOTE Harmonized as EN 61373


2

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SIST EN IEC 62984-2:2021
EN IEC 62984-2:2020 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60068-2-18 2017 Environmental testing - Part 2-18: Tests - EN 60068-2-18 2017
Test R and guidance: Water
IEC 60112 - Method for the determination of the proof and EN 60112 -
the comparative tracking indices of solid
insulating materials
IEC 60204-1 - Safety of machinery - Electrical equipment of EN 60204-1 -
machines - Part 1: General requirements
IEC 60529 - Degrees of protection provided by enclosures - -
(IP Code)
IEC 60664-1 2007 Insulation coordination for equipment within EN 60664-1 2007
low-voltage systems - Part 1: Principles,
requirements and tests
IEC 61140 2016 Protection against electric shock - Common EN 61140 2016
aspects for installation and equipment
IEC 61508 series Functional safety of EN 61508 series
electrical/electronic/programmable electronic
safety-related systems
IEC 62984-1 2020 High-temperature secondary batteries - Part - -
1: General requirements



3

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SIST EN IEC 62984-2:2021




IEC 62984-2

®


Edition 1.0 2020-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










High-temperature secondary batteries –

Part 2: Safety requirements and tests




Batteries d'accumulateurs à haute température –

Partie 2: Exigences de sécurité et essais
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.220.20 ISBN 978-2-8322-7923-6




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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

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

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SIST EN IEC 62984-2:2021
– 2 – IEC 62984-2:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviated terms . 6
3.1 Battery safety. 7
3.2 Symbols and abbreviated terms . 9
4 Environmental (service) conditions . 9
4.1 General . 9
4.2 Normal service conditions for stationary installations . 9
4.3 Special service conditions for stationary installations . 9
4.4 Normal service conditions for mobile installations (except propulsion). 9
4.5 Special service conditions for mobile installations (except propulsion) . 9
5 Safety requirements . 10
5.1 Functional safety requirements . 10
5.1.1 Safety of battery management system . 10
5.1.2 Battery protective management . 10
5.1.3 Thermal management . 10
5.2 Mechanical requirements . 10
5.2.1 General . 10
5.2.2 Battery enclosure. 10
5.3 Protection against electrical shock . 10
5.3.1 General . 10
5.3.2 Normal conditions . 11
5.3.3 Single-fault conditions . 11
5.3.4 Insulation voltage . 12
5.3.5 Separation . 15
5.3.6 Spacing . 15
5.3.7 Earthing . 16
5.4 Resistance to abnormal conditions . 18
5.4.1 Resistance to overcharge . 18
5.4.2 Resistance to short circuit . 18
5.4.3 Resistance to external fire . 19
5.4.4 Resistance to internal overheating . 19
5.4.5 Flooding . 19
5.4.6 Drop . 19
6 Safety tests . 20
6.1 General . 20
6.1.1 Classification of tests . 20
6.1.2 Test object selection . 20
6.1.3 DUT initial conditions before tests . 20
6.1.4 Measuring equipment . 20
6.2 List of tests . 21
6.3 Type tests . 21
6.3.1 Overcharge test . 21
6.3.2 Short circuit test . 22
6.3.3 External fire exposure test . 22

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6.3.4 Cell failure propagation test . 24
6.3.5 Overheating test . 25
6.3.6 Drop test . 27
6.4 Routine tests. 28
6.4.1 Withstand voltage test . 28
6.4.2 Insulation resistance measurement . 29
6.5 Special tests . 30
6.5.1 Immersion test . 30
7 Markings. 30
7.1 General . 30
7.2 Data plate marking . 32
8 Rules for transportation, installation and maintenance . 32
8.1 Transportation . 32
8.2 Installation . 32
8.3 Maintenance . 32
9 Documentation . 32
9.1 Instruction manual . 32
9.2 Test report . 32
Annex A (informative) Standard template for report of test results and description of
the DUT – Report of type test . 33
Bibliography . 36

Figure 1 – Examples of binding screw assemblies . 18
Figure 2 – Fire exposure test: pre-heating . 23
Figure 3 – Fire exposure test: direct exposure . 24
Figure 4 – Fire exposure: end . 24
Figure 5 – Plan view of specimen cross section for cell failure propagation test . 25
Figure 6 – Temperature management subsystem . 26
Figure 7 – Application of test voltage . 29
Figure 8 – Insulation resistance measurement . 29
Figure 9 – Examples of safety labels for sodium-nickel-chloride / sodium-sulfur

batteries . 31


Table 1 – List of symbols and abbreviated terms . 9
Table 2 – Withstand voltages . 13
Table 3 – Actual test voltage for impulse test with corresponding altitudes . 14
Table 4 – Guide to overvoltage category assignment . 15
Table 5 – Multiplication factors for clearances of equipment rated for operation at
altitudes up to 5 000 m . 16
Table 6 – Type tests . 21
Table 7 – Routine tests . 21
Table 8 – Special tests . 21
Table 9 – Drop test severity classes . 27

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HIGH-TEMPERATURE SECONDARY BATTERIES –

Part 2: Safety requirements and tests

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62984-2 has been prepared by IEC technical committee 21:
Secondary cells and batteries.
The text of this International Standard is based on the following documents:
FDIS Report on voting
21/1032/FDIS 21/1042/RVD

Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This document is to be read in conjunction with IEC 62984-1:2020.
A list of all parts in the IEC 62984 series, published under the general title High-temperature
secondary batteries, can be found on the IEC website.

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SIST EN IEC 62984-2:2021
IEC 62984-2:2020 © IEC 2020 – 5 –
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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HIGH-TEMPERATURE SECONDARY BATTERIES –

Part 2: Safety requirements and tests



1 Scope
This part of IEC 62984 specifies safety requirements and test procedures for high-temperature
batteries for mobile and/or stationary use and whose rated voltage does not exceed 1 500 V.
This document does not cover aircraft batteries, which are covered by IEC 60952 (all parts),
and batteries for the propulsion of electric road vehicles, covered by IEC 61982 (all parts).
NOTE High-temperature batteries are electrochemical systems whose cells' internal minimum operating
temperature is above 100 °C.
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.
IEC 60068-2-18:2017, Environmental testing – Part 2-18: Tests – Test R and guidance: Water
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
IEC 60204-1, Safety of machinery – Electrical equipment of machines – Part 1: General
requirements
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 61140:2016, Protection against electric shock – Common aspects for installation and
equipment
IEC 61508 (all parts), Functional safety of electrical/electronic/programmable electronic
safety-related systems
IEC 62984-1:2020, High-temperature secondary batteries – Part 1: General requirements
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the terms and definitions given in IEC 62984-1 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/

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IEC 62984-2:2020 © IEC 2020 – 7 –
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Battery safety
3.1.1
rated insulation voltage
rated value of the RMS withstand voltage assigned by the manufacturer to the equipment or to
a part of it, characterizing the specified (long-term) withstand capability of its insulation
Note 1 to entry: The rated insulation voltage is not necessarily equal to the rated voltage of equipment which is
primarily related to functional performance.
[SOURCE: IEC 60050-312:2014, 312-06-02]
3.1.2
functional insulation
insulation between conductive parts, necessary for the proper functioning of the equipment
[SOURCE: IEC 60050-195:1998, 195-02-41]
3.1.3
supplementary insulation
independent insulation applied in addition to basic insulation in order to provide protection
against electric shock in the event of a failure of basic insulation
[SOURCE: IEC 60050-195:1998, 195-06-07, modified – "for fault protection" has been replaced
by "in order to provide protection against electric shock in the event of a failure of basic
insulation".]
3.1.4
reinforced insulation
insulation of hazardous-live-parts which provides a degree of protection against electric shock
equivalent to double insulation
[SOURCE: IEC 60050-195:1998, 195-06-09, modified – The note has been omitted.]
3.1.5
double insulation
insulation comprising both basic insulation and supplementary insulation
Note 1 to entry: Basic and supplementary insulation are separate, each designed for basic protection against
electric shock.
[SOURCE: IEC 60050-195:1998, 195-06-08, modified – The note to entry has been added.]
3.1.6
extra-low voltage
ELV
voltage not exceeding the maximum value of the prospective touch voltage which is permitted
to be maintained indefinitely under specified conditions of external influences
[SOURCE: IEC 61140:2016, 3.26]
3.1.7
SELV system
electric system in which the voltage cannot exceed the value of extra-low voltage:
– under normal conditions and

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– under single fault conditions, including earth faults in other electric circuits
Note 1 to entry: SELV is the abbreviation for safety extra low voltage.
[SOURCE: IEC 60050-826:2004, 826-12-31]
3.1.8
PELV system
electric system in which the voltage cannot exceed the value of extra-low voltage:
– under normal conditions and
– under single fault conditions, except earth faults in other electric circuits
Note 1 to entry: PELV is the abbreviation for protective extra low voltage.
[SOURCE: IEC 60050-826:2004, 826-12-32]
3.1.9
protective-equipotential-bonding
PEB
equipotential bonding for the purposes of safety
EXAMPLE Protection against electric shock is an example of a safety purpose.
Note 1 to entry: Functional-equipotential-bonding is defined in IEV 195-01-16.
Note 2 to entry: This note applies to the French language only.
[SOURCE: IEC 60050-195:1998, 195-01-15, modified – Added abbreviated term, example and
notes.]
3.1.10
class I equipment
equipment with basic insulation as provision for basic protection against electric shock and
protective bonding as provision for fault protection, such that conductive parts on the outside
of the equipment case cannot become live in the event of a failure of the basic insulation
Note 1 to entry: Content based on IEC 60050-851:2008, 851-15-10.
3.1.11
class II equipment
equipment with basic insulation as provision for basic protection against electric shock, and
supplementary insulation as provision for fault protection, or in which basic protection and fault
protection are provided by reinforced insulation
Note 1 to entry: There should be no provision for a protective conductor or reliance upon installation conditions for
safety purposes. It is, however, possible to connect an earth conductor to Class II equipment for functional (for
example, EMC) purposes.
Note 2 to entry: Content based on IEC 60050-851:2008, 851-15-11.
3.1.12
class III equipment
equipment, or parts of equipment, in which protection against electric shock relies upon supply
from SELV or PELV systems and in which hazardous voltages (see hazardous-live-part) are not
generated
3.1.13
overvoltage category
number defining a transient overvoltage condition

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Note 1 to entry: Overvoltage categories I, II, III are used.
Note 2 to entry: See 5.3.4 for overvoltage category details.
[SOURCE: IEC 60050-581:2008, 581-21-02, modified – Added notes to entry.]
3.1.14
hazardous-live-part
live part which, under certain conditions, can give a harmful electric shock
[SOURCE: IEC 60050-195:1998, 195-06-05]
3.2 Symbols and abbreviated terms
The list of symbols and abbreviated terms is given in Table 1.
Table 1 – Li
...