High temperature secondary batteries - Part 1: General aspects, definitions and tests

IEC 62984-1:2020 specifies general aspects, definitions and tests for high-temperature secondary batteries for mobile and/or stationary use and whose nominal voltage does not exceed 1 500 V. This document does not cover aircraft batteries, which are covered by IEC 60952 (all parts), or batteries for the propulsion of electric road vehicles, covered by IEC 61982 (all parts).

Hochtemperatur-Sekundärbatterien - Teil 1: Allgemeine Anforderungen

Batteries d'accumulateur à haute temperature - Partie 1: Aspects généraux, définitions et essais

L'IEC 62984-1:2020 spécifie les aspects généraux, les définitions et les essais relatifs aux batteries d'accumulateurs à haute température pour usage mobile et/ou fixe et dont la tension nominale ne dépasse pas 1 500 V. Le présent document ne couvre pas les batteries d'aéronefs, qui sont couvertes par l'IEC 60952 (toutes les parties), ou les batteries pour la propulsion des véhicules routiers électriques, couvertes par l'IEC 61982 (toutes les parties).

Visokotemperaturne sekundarne baterije - 1. del: Splošni vidiki, definicije in preskusi

General Information

Status
Published
Publication Date
21-Jan-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
12-Jan-2021
Due Date
19-Mar-2021
Completion Date
22-Jan-2021

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SLOVENSKI STANDARD
SIST EN IEC 62984-1:2021
01-februar-2021
Visokotemperaturne sekundarne baterije - 1. del: Splošni vidiki, definicije in
preskusi

High temperature secondary batteries - Part 1: General aspects, definitions and tests

Batteries d'accumulateur à haute temperature - Partie 1: Aspects généraux, définitions et

essais
Ta slovenski standard je istoveten z: EN IEC 62984-1:2020
ICS:
29.220.20 Kislinski sekundarni členi in Acid secondary cells and
baterije batteries
SIST EN IEC 62984-1:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62984-1:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 62984-1:2021
EUROPEAN STANDARD EN IEC 62984-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 29.220.20
English Version
High-temperature secondary batteries - Part 1: General
requirements
(IEC 62984-1:2020)

Batteries d'accumulateurs à haute température - Partie 1: Hochtemperatur-Sekundärbatterien - Teil 1: Allgemeine

Exigences générales Anforderungen
(IEC 62984-1:2020) (IEC 62984-1:2020)

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 62984-1:2020 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62984-1:2021
EN IEC 62984-1:2020 (E)
European foreword

The text of document 21/1031/FDIS, future edition 1 of IEC 62984-1, prepared by IEC/TC 21

"Secondary cells and batteries" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 62984-1:2020.
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 62984-1:2020 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 60721-3-2:2018 NOTE Harmonized as EN IEC 60721-3-2:2018 (not modified)
IEC 60952 (series) NOTE Harmonized as EN 60952 (series)
IEC 61427-2:2015 NOTE Harmonized as EN 61427-2:2015 (not modified)
IEC 61982 (series) NOTE Harmonized as EN 61982 (series)
IEC 62485-2 NOTE Harmonized as EN IEC 62485-2
CISPR 11 NOTE Harmonized as EN 55011
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SIST EN IEC 62984-1:2021
EN IEC 62984-1:2020 (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 60068-2-1 2007 Environmental testing - Part 2-1: Tests - EN 60068-2-1 2007
Test A: Cold
IEC 60068-2-2 2007 Environmental testing - Part 2-2: Tests - EN 60068-2-2 2007
Test B: Dry heat

IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests - EN 60068-2-30 2005

Test Db: Damp heat, cyclic (12 h + 12 h
cycle)

IEC 60068-2-52 2017 Environmental testing - Part 2-52: Tests - EN IEC 60068-2-52 2018

Test Kb: Salt mist, cyclic (sodium chloride
solution)

IEC 60068-2-64 2008 Environmental testing - Part 2-64: Tests - EN 60068-2-64 2008

Test Fh: Vibration, broadband random and
guidance

IEC 60068-2-75 2014 Environmental testing - Part 2-75: Tests - EN 60068-2-75 2014

Test Eh: Hammer tests
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
IEC 61000-4-2 - Electromagnetic compatibility (EMC) - Part EN 61000-4-2 -
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 - Electromagnetic compatibility (EMC) - Part - -
4-3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
---------------------- Page: 5 ----------------------
SIST EN IEC 62984-1:2021
EN IEC 62984-1:2020 (E)
IEC 61000-4-4 - Electromagnetic compatibility (EMC) - Part EN 61000-4-4 -
4-4: Testing and measurement techniques
- Electrical fast transient/burst immunity
test
IEC 61000-4-5 - Electromagnetic compatibility (EMC) - Part EN 61000-4-5 -
4-5: Testing and measurement techniques
- Surge immunity test
IEC 61000-4-6 - Electromagnetic compatibility (EMC) - Part EN 61000-4-6 -
4-6: Testing and measurement techniques
- Immunity to conducted disturbances,
induced by radio-frequency fields
IEC 61000-4-11 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-4-11 -
4-11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests for equipment with input
current up to 16 A per phase
IEC 61000-4-29 - Electromagnetic compatibility (EMC) - Part EN 61000-4-29 -
4-29: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations on d.c.
input power port immunity tests
IEC 61000-4-34 - Electromagnetic compatibility (EMC) - Part EN 61000-4-34 -
4-34: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests for equipment with input
current more than 16 A per phase
IEC 61000-6-3 - Electromagnetic compatibility (EMC) - Part EN 61000-6-3 -
6-3: Generic standards - Emission
standard for residential, commercial and
light-industrial environments
IEC 61000-6-4 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-6-4 -
6-4: Generic standards - Emission
standard for industrial environments
IEC 61373 - Railway applications - Rolling stock EN 61373 -
equipment - Shock and vibration tests
IEC 62236-3-2 - Railway applications - Electromagnetic - -
compatibility - Part 3-2: Rolling stock -
Apparatus
IEC 62262 - Degrees of protection provided by EN 62262 -
enclosures for electrical equipment against
external mechanical impacts (IK code)
CISPR 25 - Vehicles, boats and internal combustion - -
engines - Radio disturbance characteristics
- Limits and methods of measurement for
the protection of on-board receivers
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SIST EN IEC 62984-1:2021
IEC 62984-1
Edition 1.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-temperature secondary batteries –
Part 1: General requirements
Batteries d'accumulateurs à haute température –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.220.20 ISBN 978-2-8322-7922-9

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
---------------------- Page: 7 ----------------------
SIST EN IEC 62984-1:2021
– 2 – IEC 62984-1:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions, symbols and abbreviated terms .......................................................... 7

3.1 Battery construction ................................................................................................ 7

3.2 Battery functionality .............................................................................................. 10

3.3 Symbols and abbreviated terms ............................................................................ 12

4 Environmental (service) conditions ................................................................................ 13

4.1 General ................................................................................................................. 13

4.2 Normal service conditions for stationary installations ............................................ 13

4.2.1 General ......................................................................................................... 13

4.2.2 Additional normal environmental conditions for indoor installations ................ 14

4.2.3 Additional normal environmental conditions for outdoor installations .............. 14

4.3 Special service conditions for stationary installations ............................................ 14

4.3.1 General ......................................................................................................... 14

4.3.2 Additional special service conditions for indoor installations .......................... 14

4.3.3 Additional special service conditions for outdoor installations ........................ 14

4.4 Normal service conditions for mobile installations (except propulsion)................... 14

4.5 Special service conditions for mobile installations (except propulsion) .................. 14

5 Design and requirements ............................................................................................... 15

5.1 Battery architecture ............................................................................................... 15

5.1.1 Module .......................................................................................................... 15

5.1.2 Battery ........................................................................................................... 15

5.1.3 Assembly of batteries .................................................................................... 16

5.1.4 Thermal management subsystem .................................................................. 17

5.2 Mechanical requirements ...................................................................................... 17

5.2.1 General ......................................................................................................... 17

5.2.2 Battery enclosure........................................................................................... 17

5.2.3 Vibration ........................................................................................................ 18

5.2.4 Mechanical impact ......................................................................................... 18

5.3 Environmental requirements ................................................................................. 18

5.4 EMC requirements ................................................................................................ 18

6 Tests ............................................................................................................................. 19

6.1 General ................................................................................................................. 19

6.1.1 Classification of tests ..................................................................................... 19

6.1.2 Test object selection ...................................................................................... 19

6.1.3 DUT initial conditions before tests ................................................................. 20

6.1.4 Measuring equipment .................................................................................... 20

6.2 List of tests ........................................................................................................... 20

6.3 Type tests ............................................................................................................. 21

6.3.1 Mechanical tests ............................................................................................ 21

6.3.2 Environmental tests ....................................................................................... 23

6.3.3 EMC tests ...................................................................................................... 24

6.4 Routine tests......................................................................................................... 33

6.5 Special tests ......................................................................................................... 33

7 Markings........................................................................................................................ 33

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SIST EN IEC 62984-1:2021
IEC 62984-1:2020 © IEC 2020 – 3 –

7.1 General ................................................................................................................. 33

7.2 Data plate marking ................................................................................................ 33

8 Rules for transportation, installation and maintenance ................................................... 33

8.1 Transportation ...................................................................................................... 33

8.2 Installation ............................................................................................................ 33

8.3 Maintenance ......................................................................................................... 33

9 Documentation .............................................................................................................. 33

9.1 Instruction manual ................................................................................................ 33

9.2 Test report ............................................................................................................ 34

Bibliography .......................................................................................................................... 35

Figure 1 – Components of a battery ...................................................................................... 16

Figure 2 – Components of an assembly of batteries .............................................................. 16

Figure 3 – Thermal management subsystem ......................................................................... 17

Table 1 – List of symbols and abbreviated terms ................................................................... 13

Table 2 – Electromagnetic environments ............................................................................... 19

Table 3 – Type tests ............................................................................................................. 21

Table 4 – Damp heat test – Steady state .............................................................................. 23

Table 5 – EMC tests severity level ........................................................................................ 25

Table 6 – Assessment criteria description for immunity tests................................................. 26

Table 7 – EFT/Burst test parameters .................................................................................... 28

Table 8 – Surge test levels ................................................................................................... 29

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SIST EN IEC 62984-1:2021
– 4 – IEC 62984-1:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-TEMPERATURE SECONDARY BATTERIES –
Part 1: General requirements
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 62984-1 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
21/1031/FDIS 21/1041/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.

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.
---------------------- Page: 10 ----------------------
SIST EN IEC 62984-1:2021
IEC 62984-1:2020 © 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.

---------------------- Page: 11 ----------------------
SIST EN IEC 62984-1:2021
– 6 – IEC 62984-1:2020 © IEC 2020
HIGH-TEMPERATURE SECONDARY BATTERIES –
Part 1: General requirements
1 Scope

This part of IEC 62984 specifies general aspects, definitions and tests for high-temperature

secondary batteries for mobile and/or stationary use and whose nominal voltage does not

exceed 1 500 V.

This document does not cover aircraft batteries, which are covered by IEC 60952 (all parts), or

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 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat

IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic

(12 h + 12 h cycle)

IEC 60068-2-52:2017, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic

(sodium chloride solution)

IEC 60068-2-64:2008, Environmental testing – Part 2-64: Tests – Test Fh: Vibration, broadband

random and guidance

IEC 60068-2-75:2014, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests

IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state

IEC 60529, Degrees of protection provided by enclosures (IP Code)

IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement

techniques – Electrostatic discharge immunity test

IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement

techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-4, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement

techniques – Electrical fast transient/burst immunity test

IEC 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement

techniques – Surge immunity test
---------------------- Page: 12 ----------------------
SIST EN IEC 62984-1:2021
IEC 62984-1:2020 © IEC 2020 – 7 –

IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement

techniques – Immunity to conducted disturbances, induced by radio-frequency fields

IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement

techniques – Voltage dips, short interruptions and voltage variations immunity tests

IEC 61000-4-29, Electromagnetic compatibility (EMC) – Part 4-29: Testing and measurement

techniques – Voltage dips, short interruptions and voltage variations on d.c. input power port

immunity tests

IEC 61000-4-34, Electromagnetic compatibility (EMC) – Part 4-34: Testing and measurement

techniques – Voltage dips, short interruptions and voltage variations immunity tests for

equipment with mains current more than 16 A per phase

IEC 61000-6-3, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission

standard for residential, commercial and light-industrial environments

IEC 61000-6-4, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards – Emission

standard for industrial environments

IEC 61373, Railway applications – Rolling stock equipment – Shock and vibration tests

IEC 62236-3-2, Railway applications – Electromagnetic compatibility – Part 3-2: Rolling stock

– Apparatus

IEC 62262, Degrees of protection provided by enclosures for electrical equipment against

external mechanical impacts (IK code)

CISPR 25, Vehicles, boats and internal combustion engines – Radio disturbance characteristics

– Limits and methods of measurement for the protection of on-board receivers
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Battery construction
3.1.1
cell

basic functional unit, consisting of an assembly of electrodes, electrolyte, container, terminals

and usually separators, that is a source of electric energy obtained by direct conversion of

chemical energy
Note 1 to entry: See primary cell and secondary cell.
[SOURCE: IEC 60050-482:2004, 482-01-01]
3.1.2
secondary cell
cell which is designed to be electrically recharged
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SIST EN IEC 62984-1:2021
– 8 – IEC 62984-1:2020 © IEC 2020

Note 1 to entry: The recharge is accomplished by way of a reversible chemical reaction.

[SOURCE: IEC 60050-482:2004, 482-01-03]
3.1.3
module

standardized and interchangeable assembly of cells connected in series and/or parallel and

associated hardware designed for easy assembly into a commercial battery
[SOURCE: IEC 61427-2:2015, 3.29]
3.1.4
battery

one or more cells fitted with devices necessary for use, for example case, terminals, marking

and protective devices
[SOURCE: IEC 60050-482:2004, 482-01-04]
3.1.5
high-temperature battery
battery whose cells' internal minimum operating temperature is above 100 °C

Note 1 to entry: A high-temperature battery is inactive when the cells are at room temperature or lower.

3.1.6
(cell) electrode

electrode, electrically connected to one terminal of a cell, in electric contact with the electrolyte

of that cell and on which the electrode reaction occurs
Note 1 to entry: For "electrode", see IEC 60050-151:2001, 151-13-01.
Note 2 to entry: The active material may be part of the electrode.
[SOURCE: IEC 60050-482:2004, 482-02-21]
3.1.7
terminal

conductive part of a device, electric circuit or electric network, provided for connecting that

device, electric circuit or electric network to one or more external conductors
[SOURCE: IEC 60050-482:2004, 482-02-22]
3.1.8
negative terminal

accessible conductive part provided for the connection of an external electric circuit to the

negative electrode of the cell
[SOURCE: IEC 60050-482:2004, 482-02-24]
3.1.9
positive terminal

accessible conductive part provided for the connection of an external electric circuit to the

positive electrode of the cell
[SOURCE: IEC 60050-482:2004, 482-02-25]
3.1.10
electrolyte

liquid or solid substance containing mobile ions which render it ionically conductive

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SIST EN IEC 62984-1:2021
IEC 62984-1:2020 © IEC 2020 – 9 –
[SOURCE: IEC 60050-482:2004, 482-02-29, modified – The note has been omitted.]
3.1.11
active material

material which reacts chemically to produce electric energy when the cell discharges

Note 1 to entry: In secondary cells, the active material is restored to its original state during charge.

[SOURCE: IEC 60050-482:2004, 482-02-33]
3.1.12
enclosure
housing affording the type and degree of protection suitable
...

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