Secondary cells and batteries containing alkaline or other non-acid electrolytes - Sealed nickel-metal hydride prismatic rechargeable single cells

IEC 62675:2014 specifies marking, designation, dimensions, tests and requirements for sealed nickel-metal hydride prismatic secondary single cells.

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Éléments individuels parallélépipédiques rechargeables étanches au nickel-métal hydrure

L'IEC 62675:2014 spécifie le marquage, la désignation, les dimensions, les essais et les exigences applicables aux éléments individuels parallélépipédiques étanches au nickel-métal hydrure.

General Information

Status
Published
Publication Date
26-Aug-2014
Current Stage
PPUB - Publication issued
Start Date
27-Aug-2014
Completion Date
27-Aug-2014
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IEC 62675
Edition 1.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Sealed nickel-metal hydride prismatic rechargeable single cells
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Éléments individuels parallélépipédiques rechargeables étanches au nickel-
métal hydrure
IEC 62675:2014-08(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62675
Edition 1.0 2014-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Sealed nickel-metal hydride prismatic rechargeable single cells
Accumulateurs alcalins et autres accumulateurs à électrolyte non acide –
Éléments individuels parallélépipédiques rechargeables étanches au nickel-
métal hydrure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 29.220.99 ISBN 978-2-8322-1845-7

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 62675:2014  IEC 2014
CONTENTS

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

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

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

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

4 Parameter measurement tolerances ................................................................................ 7

5 Designation and marking ................................................................................................. 7

5.1 Cell designation ...................................................................................................... 7

5.2 Cell termination ....................................................................................................... 8

5.3 Marking ................................................................................................................... 8

5.4 Safety recommendations ......................................................................................... 8

6 Dimensions...................................................................................................................... 8

7 Electrical tests ............................................................................................................... 10

7.1 General ................................................................................................................. 10

7.2 Charging procedure for test purposes ................................................................... 10

7.3 Discharge performance ......................................................................................... 10

7.3.1 General ......................................................................................................... 10

7.3.2 Discharge performance at 20 °C .................................................................... 10

7.3.3 Discharge performance at +5 °C .................................................................... 11

7.3.4 Discharge performance at –18 °C .................................................................. 11

7.3.5 High rate current test ..................................................................................... 12

7.4 Charge retention ................................................................................................... 12

7.5 Endurance ............................................................................................................ 13

7.5.1 Endurance in cycles....................................................................................... 13

7.5.2 Permanent charge endurance ........................................................................ 13

7.6 Charge acceptance at constant voltage ................................................................. 14

7.7 Overcharge ........................................................................................................... 14

7.8 Vent plug operation ............................................................................................... 14

7.9 Safety device operation ........................................................................................ 14

7.10 Gas leakage test ................................................................................................... 15

7.11 Storage ................................................................................................................. 15

8 Mechanical tests ............................................................................................................ 15

9 Physical appearance ..................................................................................................... 15

10 Conditions for approval and acceptance ........................................................................ 15

10.1 Type approval ....................................................................................................... 15

10.2 Batch acceptance ................................................................................................. 16

Bibliography .......................................................................................................................... 17

Figure 1 – Example of a sealed prismatic cell in steel container with two terminals and

four lugs ................................................................................................................................. 8

Figure 2 – Example of a sealed prismatic cell in plastic container with two terminals .............. 9

Table 1 – Dimensions for sealed nickel-metal hydride prismatic cells in steel

containers ............................................................................................................................... 9

Table 2 – Dimensions for sealed nickel-metal hydride prismatic cells in plastic

containers ............................................................................................................................... 9

---------------------- Page: 4 ----------------------
IEC 62675:2014  IEC 2014 – 3 –

Table 3 – Measurement tolerances in millimetres (valid for widths and lengths) ................... 10

Table 4 – Discharge performance at 20 °C ............................................................................ 11

Table 5 – Discharge performance at +5 °C ............................................................................ 11

Table 6 – Discharge performance at –18 °C .......................................................................... 12

Table 7 – High currents values.............................................................................................. 12

Table 8 – Endurance in cycles .............................................................................................. 13

Table 9 – Sequence of tests for type approval ...................................................................... 16

Table 10 – Recommended test sequence for batch acceptance ............................................ 16

---------------------- Page: 5 ----------------------
– 4 – IEC 62675:2014  IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SEALED NICKEL-METAL HYDRIDE PRISMATIC
RECHARGEABLE SINGLE CELLS
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

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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

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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 62675 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/550/FDIS 21A/560/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 62675:2014  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 62675:2014  IEC 2014
SECONDARY CELLS AND BATTERIES CONTAINING
ALKALINE OR OTHER NON-ACID ELECTROLYTES –
SEALED NICKEL-METAL HYDRIDE PRISMATIC
RECHARGEABLE SINGLE CELLS
1 Scope

This International Standard specifies marking, designation, dimensions, tests and

requirements for sealed nickel-metal hydride prismatic secondary single cells.

NOTE In this context, "prismatic" refers to cells having rectangular sides and base.

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.

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
3 Terms and definitions

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

well as the following apply.
3.1
sealed cell

cell which remains closed and does not release either gas or liquid when operated within the

limits of charge and temperature specified by the manufacturer

Note 1 to entry: The cell is equipped with a safety device to prevent dangerously high internal pressure.

Note 2 to entry: The cell does not require addition to the electrolyte and is designed to operate during its life in its

original sealed state.

Note 3 to entry: The nickel-metal hydride cell, however, may release gas towards the end of its life due to the

accumulation of hydrogen in the cell.

[SOURCE: IEC 60050-482:2004, 482-05-17, modified – The existing note has been developed

into Notes 1, 2 and 3 to entry.]
3.2
nominal voltage

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

battery

Note 1 to entry: The nominal voltage of a sealed nickel-metal hydride rechargeable single cell: 1,2 V.

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.
---------------------- Page: 8 ----------------------
IEC 62675:2014  IEC 2014 – 7 –

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

3.3
rated capacity

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

manufacturer

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

manufacturer which a battery can deliver when discharged at the reference test current of 0,2 I A to a final voltage

of 1,0 V at +20 °C when charged, stored and discharged under the conditions specified in Clause 7.

[SOURCE: IEC 60050-482:2004, 482-03-15, modified – Addition of Note 1 to entry.]
4 Parameter measurement tolerances

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

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

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 Designation and marking
5.1 Cell designation

Sealed nickel-metal hydride prismatic secondary single cells shall be designated by the letter

"HP" followed by a letter L, M, H or X which signifies:
– low rate of discharge (L);
– medium rate of discharge (M);
– high rate of discharge (H);
– very high rate of discharge (X).

NOTE These types of cells are typically but not exclusively used for the following discharge rates

– L up to 0,5 I A,
– M up to 3,5 I A,
– H up to 7,0 I A,
– X up to and above 7,0 I A.

This group of two letters shall be followed by a group of figures indicative of the rated

capacity of the cell in ampere-hours.

Cells that have been tested at 20 °C and 5 °C but not at –18 °C shall carry an additional

marking of T5.
For example: HPH 100 or HPH 100 T5.
---------------------- Page: 9 ----------------------
– 8 – IEC 62675:2014  IEC 2014

Cells in cases of steel material shall be designated by the letter "S" after the figures.

For example: HPH 100 S or HPH 100 S T5.
5.2 Cell termination
This standard does not specify cell termination.
5.3 Marking

Each cell or monobloc shall carry durable markings giving the following minimum information:

• type of cell (designation as specified in 5.1; in addition, it is permissible for a manufacturer

to use his own type designation);
• name or identification of manufacturer or supplier;

• positive terminal: either a red washer or an indented or raised symbol, (see graphical

symbol 5005 of IEC 60417:2002).
5.4 Safety recommendations

The manufacturer shall provide recommendations for the safe handling of the cell. See also

IEC 61438.
6 Dimensions

Dimensions of cells shown in Figure 1 and Figure 2 are given in Table 1 and Table 2.

Lug
b d
IEC

NOTE Cells in steel container can have two or more terminals and four or more lugs.

Figure 1 – Example of a sealed prismatic cell in steel container
with two terminals and four lugs
---------------------- Page: 10 ----------------------
IEC 62675:2014  IEC 2014 – 9 –
b d
IEC
NOTE Cells in plastic container can have two or more terminals.

Figure 2 – Example of a sealed prismatic cell in plastic container with two terminals

Table 1 – Dimensions for sealed nickel-metal hydride
prismatic cells in steel containers
Maximum height, h Width, b Length, d
mm mm mm
210 155 55
320 230 61
Table 2 – Dimensions for sealed nickel-metal hydride
prismatic cells in plastic containers
Maximum height, h Width, b Length, d
mm mm mm
125 83 36
146 98 41
168 83 34
178 116 37, 40
191 134 49
195 60 78
200 120 47
224 182 55
300 220 224
NOTE 1 The dimensions given in Table 1 and Table 2 represent preferred values.
---------------------- Page: 11 ----------------------
– 10 – IEC 62675:2014  IEC 2014

NOTE 2 The widths relate to the overall width dimension of the cell excluding for cells in steel container the

thickness of the lug flanges. The values for widths and lengths given in Table 1 and Table 2 are maximum values;

their negative tolerances are given in Table 3.

NOTE 3 The values for height given in Table 1 and Table 2 relate to the maximum height over the terminals or the

closed cell vent, whichever is the greater. No lower limits are stated.

NOTE 4 The dimensions shown in Table 1 and Table 2 are not associated to particular cell capacities. They apply

to all kinds of sealed nickel-metal hydride prismatic cells, i.e. L, M, H and X types.

Table 3 – Measurement tolerances in millimetres
(valid for widths and lengths)
Up to and including 60 mm 0 to –2
Above 60 mm, up to and including 120 mm 0 to –3
Above 120 mm 0 to –4
7 Electrical tests
7.1 General

Charge and discharge currents for the tests in accordance with 7.2 to 7.10 inclusive shall be

based on the value of the rated capacity.

In all tests, except where noted, no leakage of electrolyte in liquid form shall be observed. A

cooling device may be necessary, referring to manufacturer’s instructions. When the

temperature on the cell reaches a level of 70 °C, the charge or discharge should be

discontinued.

In all electrical tests, safety pressure plate may be used at outside of the cell to prevent a

deformation of cell case.
7.2 Charging procedure for test purposes

Prior to charging, the cells shall have been discharged in an ambient temperature

of 20 °C ± 5 °C, at a constant current of 0,2 I A, down to a final voltage of 1,0 V.

Unless otherwise specified in this standard, the charge preceding the various discharge tests

scheduled, shall be carried out in an ambient temperature of 20 °C ± 5 °C and either

a) at a constant current of 0,2 I A for 4h, then at a constant current of 0,1 I A for 3 h to 4 h.

The duration of the charge shall therefore be 7 h to 8 h, or

b) at a constant current of 0,2 I A for 4 h 30 min, then at a constant current of 0,05 I A

for 3 h to 4 h. The duration of the charge shall therefore be 7 h 30 min to 8 h 30 min.

7.3 Discharge performance
7.3.1 General
The following discharge tests shall be carried out in the sequence given.
All cells shall be tested at 20 °C as well as at +5 °C and/or –18 °C.
7.3.2 Discharge performance at 20 °C

The cell shall have been charged in accordance with 7.2. After charging, the cell shall be

stored, in an ambient temperature of 20 °C ± 5 °C , for not less than 1 h and not more than

4 h. It shall then be discharged in the same ambient temperature and as specified in Table 4.

The duration of discharge shall be not less than the minimum specified in Table 4.

---------------------- Page: 12 ----------------------
IEC 62675:2014  IEC 2014 – 11 –

The 0,2 I A discharge test is performed in order to verify the declared rated capacity of

the cell.
Table 4 – Discharge performance at 20 °C
Discharge conditions Minimum discharge duration
Rate of constant current Final Cell designation
voltage
A V L M H X
0,2 I 1,0 5 h 5 h 5 h 5 h
1,0 I 1,0 – 38 min 48 min 54 min
5,0 I 0,8 – – 2 min 30 s 6 min 30 s
10,0 I
0,8 – – – 1 min 30 s

Five cycles are permitted for this test which shall, however, be terminated at the end of the first cycle which

meets the requirement.

Before the 5 I A and the 10 I A discharge tests, a conditioning cycle may be included if necessary. This cycle

t t
shall consist of charging and discharging in accordance with 7.2 and 7.3.2.
7.3.3 Discharge performance at +5 °C

The cell shall have been charged in accordance with 7.2. After charging, the cell shall be

stored, in an ambient temperature of +5 °C ± 2 °C, for 24 h. Means shall be provided to

ensure that the electrolyte temperature has reached +5 °C ± 2 °C within 24 h. It shall then be

discharged in the same ambient temperature and as specified in Table 5.

The duration of discharge shall be not less than the minimum specified in Table 5.

Table 5 – Discharge performance at +5 °C
Discharge conditions Minimum discharge duration
Rate of constant Final voltage Cell designation
current
A V L M H X
0,2 I 1,0 3 h 24 min 3 h 42 min 3 h 54 min 4 h 18 min
1,0 I 1,0 – 25 min 36 min 44 min
2,0 I
1,0 – – 10 min 18 min 30 s
3,0 I 0,8 – – – 10 min 30 s

Before the 2 I A and 3 I A tests, a conditioning cycle may be included if necessary. This cycle shall consist of

t t

charging and discharging, in an ambient temperature of 20 °C ± 5 °C, according to 7.2 and 7.3.2.

7.3.4 Discharge performance at –18 °C

The cell shall have been charged in accordance with 7.2. After charging, the cell shall be

stored in an ambient temperature of –18 °C ± 2 °C, for 24 h. Means shall be provided to

ensure that the electrolyte temperature has reached –18 °C ± 2 °C within 24 h. It shall then be

discharged in the same ambient temperature and as specified in Table 6. The duration of

discharge shall be not less than the minimum specified in Table 6.
---------------------- Page: 13 ----------------------
– 12 – IEC 62675:2014  IEC 2014
Table 6 – Discharge performance at –18 °C
Discharge conditions Minimum discharge duration
Rate of constant Final voltage Cell designation
current
A V L M H X
0,2 I 1,0 2 h 8 min 2 h 24 min 2 h 39 min 2 h 54 min
1,0 I 0,9 – 12 min 21 min 27 min
2,0 I 0,9 – – 6 min 9 min
3,0 I
0,8 – – – 4 min

Before the 2 I A and 3 I A discharge tests, a conditioning cycle may be included if necessary. This cycle shall

t t
consist of charging a
...

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