Secondary cells and batteries containing alkaline or other non-acid electrolytes - Secondary lithium cells and batteries for use in industrial applications

IEC 62620:2014 specifies marking, tests and requirements for lithium secondary cells and batteries used in industrial applications including stationary applications. When there exists an IEC standard specifying test conditions and requirements for cells used in special applications and which is in conflict with this standard, the former takes precedence. (e.g. IEC 62660 series on road vehicles). The following are some examples of applications that utilize the cells and batteries under the scope of this standard.
- Stationary applications: telecom, uninterruptible power supplies (UPS), electrical energy storage system, utility switching, emergency power and similar applications.
- Motive applications: fork-lift truck, golf cart, AGV, railway, and marine, excluding road vehicles.
This standard applies to cells and batteries. If the battery is divided into smaller units, the smaller unit can be tested as the representative of the battery. The manufacturer clearly declares the tested unit. The manufacturer may add functions, which are present in the final battery, to the tested unit.

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Eléments et batteries d'accumulateurs au lithium pour utilisation dans les applications industrielles

L'IEC 62620:2014 spécifie le marquage, les essais et les exigences pour les éléments et les batteries d accumulateurs au lithium utilisés dans les applications industrielles, y compris les applications stationnaires. En cas d'existence d'une norme IEC spécifiant des conditions d'essai et des exigences pour des éléments destinés à des applications particulières, et qui serait en contradiction avec la présente norme, la publication particulière est appliquée en priorité (par exemple, la série IEC 62660 sur les véhicules routiers). Ci-après figurent des exemples d'applications utilisant les éléments et les batteries inclus dans le domaine d'application de la présente norme.
- Applications stationnaires: télécommunications, alimentation sans interruption (ASI), système de stockage de l'énergie électrique, sélecteur de service, alimentation d'urgence et applications analogues.
- Applications mobiles: chariot élévateur, voiturette de golf, AGV, ferroviaire, et marine, à l'exception des véhicules routiers.
La présente norme s'applique aux éléments et aux batteries. Si la batterie est divisée en unités plus petites, l'unité plus petite peut être soumise aux essais pour représenter l'ensemble de la batterie. Le fabricant déclare clairement l'unité soumise aux essais. Le fabricant peut ajouter des fonctions, qui sont présentes dans la batterie finale, à l'unité soumise aux essais.

General Information

Status
Published
Publication Date
24-Nov-2014
Current Stage
PPUB - Publication issued
Start Date
25-Nov-2014
Completion Date
25-Nov-2014
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IEC 62620
Edition 1.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Secondary lithium cells and batteries for use in industrial
applications
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Éléments et batteries d'accumulateurs au lithium pour utilisation dans les
applications industrielles
IEC 62620:2014-11(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62620
Edition 1.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Secondary lithium cells and batteries for use in industrial
applications
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Éléments et batteries d'accumulateurs au lithium pour utilisation dans les
applications industrielles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.220.30 ISBN 978-2-8322-1958-4

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: 3 ----------------------
– 2 – IEC 62620:2014 © IEC 2014
CONTENTS

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

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

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

3 Terms and definitions ...................................................................................................... 6

4 Parameters measurement tolerances ............................................................................... 8

5 Marking and designation .................................................................................................. 8

5.1 Marking ................................................................................................................... 8

5.2 Cell designation .................................................................................................... 10

5.3 Battery designation ............................................................................................... 12

5.3.1 General ......................................................................................................... 12

5.3.2 Battery structure formulation .......................................................................... 13

5.4 Cell or battery termination ..................................................................................... 13

6 Electrical tests ............................................................................................................... 13

6.1 General ................................................................................................................. 13

6.2 Charging procedure for test purposes ................................................................... 14

6.3 Discharge performance ......................................................................................... 14

6.3.1 Discharge performance at +25 °C .................................................................. 14

6.3.2 Discharge performance at low temperature .................................................... 15

6.3.3 High rate permissible current ......................................................................... 15

6.4 Charge (capacity) retention and recovery .............................................................. 16

6.4.1 General ......................................................................................................... 16

6.4.2 Test method .................................................................................................. 16

6.4.3 Acceptance criterion ...................................................................................... 16

6.5 Cell and battery internal resistance ....................................................................... 17

6.5.1 General ......................................................................................................... 17

6.5.2 Measurement of the internal a.c. resistance ................................................... 17

6.5.3 Measurement of the internal d.c. resistance ................................................... 17

6.6 Endurance ............................................................................................................ 18

6.6.1 Endurance in cycles....................................................................................... 18

6.6.2 Endurance in storage at constant voltage (permanent charge life) ................. 19

7 Type test conditions ...................................................................................................... 20

7.1 General ................................................................................................................. 20

7.2 Sample size .......................................................................................................... 20

7.3 Conditions for type approval ................................................................................. 21

7.3.1 Dimensions .................................................................................................... 21

7.3.2 Electrical tests ............................................................................................... 22

Annex A (informative) Battery structure information ............................................................. 23

A.1 Example 1 ............................................................................................................. 23

A.2 Example 2 ............................................................................................................. 23

A.3 Example 3 ............................................................................................................. 23

A.4 Example 4 ............................................................................................................. 23

A.5 Example 5 ............................................................................................................. 24

A.6 Example 6 ............................................................................................................. 24

A.7 Example 7 ............................................................................................................. 25

A.8 Example 8 ............................................................................................................. 25

---------------------- Page: 4 ----------------------
IEC 62620:2014 © IEC 2014 – 3 –

A.9 Example 9 ............................................................................................................. 26

Bibliography .......................................................................................................................... 27

Figure 1 – Test sequence ..................................................................................................... 21

Figure A.1 – Structure 3S ..................................................................................................... 23

Figure A.2 – Structure 2P ..................................................................................................... 23

Figure A.3 – Structure 3S2P ................................................................................................. 23

Figure A.4 – Structure 2P4S ................................................................................................. 24

Figure A.5 – Structure 2P4S3P ............................................................................................. 24

Figure A.6 – Structure (2P4S)3P ........................................................................................... 25

Figure A.7 – Structure (3S2P)3P ........................................................................................... 25

Figure A.8 – Structure (5S)4S ............................................................................................... 26

Figure A.9 – Structure ((3S2P)3P)2S .................................................................................... 26

Table 1 – Marking ................................................................................................................. 10

Table 2 – Discharge performance at +25 °C ± 5 °C ............................................................... 14

Table 3 – Discharge performance at low temperature ........................................................... 15

Table 4 – Discharge current values for high rate permissible test .......................................... 16

Table 5 – Constant discharge current used for measurement of the internal d.c.

resistance ............................................................................................................................. 18

Table 6 – Type test ............................................................................................................... 20

Table 7 – Severe conditions .................................................................................................. 22

---------------------- Page: 5 ----------------------
– 4 – IEC 62620:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SECONDARY LITHIUM CELLS AND BATTERIES
FOR USE IN INDUSTRIAL APPLICATIONS
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 62620 has been prepared by subcommittee 21A: Secondary cells

and batteries containing alkaline or other non-acid electrolytes, of IEC technical committee 21:

Secondary cells and batteries.
The text of this standard is based on the following documents:
FDIS Report on voting
21A/561/FDIS 21A/572/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 6 ----------------------
IEC 62620:2014 © IEC 2014 – 5 –

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 62620:2014 © IEC 2014
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SECONDARY LITHIUM CELLS AND BATTERIES
FOR USE IN INDUSTRIAL APPLICATIONS
1 Scope

This International Standard specifies marking, tests and requirements for lithium secondary

cells and batteries used in industrial applications including stationary applications.

When there exists an IEC standard specifying test conditions and requirements for cells used

in special applications and which is in conflict with this standard, the former takes precedence.

(e.g. IEC 62660 series on road vehicles).

The following are some examples of applications that utilize the cells and batteries under the

scope of this standard.

• Stationary applications: telecom, uninterruptible power supplies (UPS), electrical energy

storage system, utility switching, emergency power and similar applications.

• Motive applications: fork-lift truck, golf cart, AGV, railway, and marine, excluding road

vehicles.

Since this standard covers batteries for various industrial applications, it includes those

requirements, which are common and minimum to the various applications.

This standard applies to cells and batteries. If the battery is divided into smaller units, the

smaller unit can be tested as the representative of the battery. The manufacturer clearly

declares the tested unit. The manufacturer may add functions, which are present in the final

battery, to the tested unit.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

IEC 60050-482:2004, International Electrotechnical Vocabulary (IEV) – Part 482: Primary and

secondary cells and batteries
ISO/IEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60050-482 and

ISO/IEC Guide 51 as well as the following apply.
3.1
charge recovery
capacity recovery

capacity that a cell or battery can deliver after the charge following the charge retention test

---------------------- Page: 8 ----------------------
IEC 62620:2014 © IEC 2014 – 7 –
Note 1 to entry: Charge retention is defined in 3.2.
3.2
charge retention
capacity retention

capacity that a cell or battery can deliver after storage, at a specific temperature, for a

specific time without subsequent recharge as a percentage of the rated capacity
3.3
final voltage
end-of-discharge voltage

specified closed circuit voltage at which the discharge of a cell or battery is terminated

3.4
nominal voltage

suitable approximate value of the voltage used to designate or identify a cell or a battery

Note 1 to entry: The cell or battery manufacturer may provide the nominal voltage.

Note 2 to entry: The nominal voltage of a battery of n series connected cells is equal to n times the nominal

voltage of a single cell.

[SOURCE: IEC 60050-482:2004, 482-03-31, modified – Addition of Notes 1 and 2 to entry.]

3.5
rated capacity

capacity value of a cell or battery determined under specified conditions and declared by the

manufacturer

Note 1 to entry: The rated capacity is the quantity of electricity Cn Ah (ampere-hours) declared by the

manufacturer which a single cell or battery can deliver during a n h period when charging, storing and discharging

under the conditions specified in 6.3.1. n is 5 for an E, M and H discharge rate type cell or battery. n is 8, 10, 20 or

240 for an S discharge rate type battery.
[SOURCE: IEC 60050-482:2004, 482-03-15, modified – Addition of Note 1 to entry.]
3.6
cell
secondary lithium cell

secondary cell where electrical energy is derived from the insertion/extraction reactions of

lithium ions or oxidation/reduction reaction of lithium between the negative electrode and the

positive electrode

Note 1 to entry: The cell typically has an electrolyte that consists of a lithium salt and organic solvent compound

in liquid, gel or solid form and has a metal or a laminate film casing. It is not ready for use in an application

because it is not yet fitted with its final housing, terminal arrangement and electronic control device.

3.7
cell block

group of cells connected together in parallel configuration with or without protective devices

(e.g. fuse or PTC) and monitoring circuitry

Note 1 to entry: It is not ready for use in an application because it is not yet fitted with its final housing, terminal

arrangement and electronic control device.
3.8
module

group of cells connected together either in a series and/or parallel configuration with or

without protective devices (e.g. fuse or PTC) and monitoring circuitry
---------------------- Page: 9 ----------------------
– 8 – IEC 62620:2014 © IEC 2014
3.9
battery pack

energy storage device, which is comprised of one or more cells or modules electrically

connected

Note 1 to entry: It may incorporate a protective housing and be provided with terminals or other interconnection

arrangement. It may include protective devices and control and monitoring, which provides information (e.g. cell

voltage) to a battery system.
3.10
battery system
battery

system which incorporates one or more cells, modules or battery packs; it has a battery

management system
Note 1 to entry: It may have cooling or heating units.
3.11
battery management system
BMS

electronic system associated with a battery which monitors and/or manages its state,

calculates secondary data, reports that data and/or controls its environment to influence the

battery’s safety, performance and/or service life and has the functions to cut off in case of

over charging, over current and over heating

Note 1 to entry: The function of the BMS can be assigned to the battery pack or to equipment that uses the

battery.

Note 2 to entry: A BMS is sometimes also referred to as a BMU (battery management unit).

4 Parameters measurement tolerances

The overall accuracy of controlled or measured values, relative to the specified or actual

values, shall be within the following tolerances:
a) ±0,5 % for voltage;
b) ±1 % for current;
c) ±2 °C for temperature;
d) ±0,1 % for time;
e) ±1 % for dimensions.

These tolerances comprise the combined accuracy of the measuring instruments, the

measurement techniques used, and all other sources of error in the test procedure.

The details of the instrumentation used shall be provided in any report of results.

5 Marking and designation
5.1 Marking

The marking items shown in Table 1 are indicated on the cell, battery system or instruction

manual. When marked on the cell or battery system, each cell or battery system that is

installed or maintained shall carry clear and durable markings giving the information.

The following options are allowed:

• if there are designations on a battery system, designations are not necessary on the

battery pack, module or cell;
---------------------- Page: 10 ----------------------
IEC 62620:2014 © IEC 2014 – 9 –

• if there are designations on a battery pack, designations are not necessary on the module

and cell;

• if there are designations on a module, designations are not necessary on the cell.

However, for a transportable unit (i.e. a unit that is being shipped), it is necessary to provide

the marking information on the main transportable unit or in its instruction manual.

Furthermore, if there is a marking matter of arrangement between the purchaser and the

manufacturer, it shall comply with the agreement.
See Table 1.

Each cell or battery that is installed or maintained shall carry clear and durable markings

giving the following information:
• secondary (rechargeable) Li or Li-ion;

• polarity (can be deleted if there is an agreement between cell and pack manufacturer);

• date of manufacture (which may be in code);
• name or identification of manufacturer or supplier;
• rated capacity;
• nominal voltage;
• appropriate caution statement.

The model name and manufacturing traceability shall be marked on the cell and battery

surface. The other items listed above can be marked on the smallest package or supplied with

the cell or the battery.

The following information shall be marked on or supplied with the cell or the battery:

• disposal instructions;
• recommended charge instructions.

The following information shall be marked on the cell or when there is no marking place on

the cell, it shall be marked in the manual.
• cell designation as specified in 5.2.
---------------------- Page: 11 ----------------------
– 10 – IEC 62620:2014 © IEC 2014
Table 1 – Marking
Cell block Battery system
Marking information Cell Module or
Battery pack
Secondary (rechargeable) Li or Li-ion R R R
Polarity (see NOTE 1) R R R
Date of manufacture (which may be in code)* (see NOTE 2) R R R
Name or identification of manufacturer or supplier R R R
Rated capacity R R R
Calculated rated capacity* -- -- R
Method for calculating rated capacity* -- -- R
Nominal voltage R R R
Watt-hour* (see NOTE 3) V V V
Appropriate caution statement (Including disposal R R R
instructions)
Cell designation as specified in 5.2 R -- --
Battery designation as specified in 5.4 - R R
Recommended charge instructions R R R
“R” = required; “V“ = voluntary, “--“ = unnecessary or not applicable
a It is necessary to mark designations on the main battery system.
b Tested by main battery system; shall be indicated on the main battery system.

c If evaluated by testing the split unit of a battery system; it shall be indicated as the rated capacity and shall be the

amount calculated by a reasonable method.
For example:
Measured rated capacity of module: 10 Ah
Number of modules connected in parallel: 5
Calculated rated capacity (Ah) = 10 Ah × 5 = 50 Ah
NOTE 1 There is an exception, see 5.1.
NOTE 2 The date can be in
...

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