CSA E61951-2:14

(IEC 61951-2:2011, MOD)

National Standard of Canada Norme nationale du Canada (reaffirmed/confirmée en 2019)

CSA E61951-2:14

Secondary cells and batteries containing alkaline or other non-acid electrolytes —

Portable sealed rechargeable single cells — Part 2: Nickel-metal hydride

(IEC 61951-2:2011, MOD)

CSA E61951-2:14

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide — Accumulateurs individuels portables étanches — Partie 2 : Nickel-métal hydrure (IEC 61951-2:2011, MOD)

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  CSA E61951-2:14

  December 2014

  
  

  Title: Secondary cells and batteries containing alkaline or other non-acid electrolytes — Portable sealed rechargeable single cells — Part 2: Nickel-metal hydride

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INTERNATIONALE

Secondary cells and batteries containing alkaline or other non-acid electrolytes – Portable sealed rechargeable single cells –

Part 2: Nickel-metal hydride

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide – Accumulateurs individuels portables étanches –

IEC 61951-2:2011

Partie 2: Nickel-métal hydrure

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INTERNATIONALE

Secondary cells and batteries containing alkaline or other non-acid electrolytes – Portable sealed rechargeable single cells –

Part 2: Nickel-metal hydride

Accumulateurs alcalins et autres accumulateurs à électrolyte non acide – Accumulateurs individuels portables étanches –

Partie 2: Nickel-métal hydrure

INTERNATIONAL ELECTROTECHNICAL COMMISSION

COMMISSION ELECTROTECHNIQUE INTERNATIONALE

V

PRICE CODE CODE PRIX

ICS 29.220.30

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

CONTENTS

FOREWORD 4

1. Scope 6

2. Normative references 6

3. Terms and definitions 6

4. Parameter measurement tolerances 7

5. Cell designation and marking 8

   1. Cell designation 8

      1. Small prismatic cells and cylindrical cells 8

      2. Button cells 9

   2. Cell termination 9

   3. Marking 9

      1. Small prismatic cells and cylindrical cells 9

      2. Button cells 10

6. Dimensions 10

   1. Small prismatic cells and cylindrical cells 10

      1. General 10

      2. Small prismatic cells 11

      3. Cylindrical cells 12

   2. Button cells 14

7. Electrical tests 14

   1. General 14

   2. Charging procedure for test purposes 14

   3. Discharge performance 15

      1. General 15

      2. Discharge performance at 20 °C 15

      3. Discharge performance at 0 °C 15

      4. Discharge performance for rapid charge cells (R cells) 16

   4. Charge (capacity) retention 16

   5. Endurance 17

      1. Endurance in cycles 17

      2. Permanent charge endurance 19

   6. Charge acceptance at constant voltage 23

   7. Overcharge 23

      1. Small prismatic, L, M, H, X, LS or MS cylindrical, and button cells 23

      2. LT/LU, MT/MU or HT/HU cylindrical cells 23

      3. R cylindrical cells 23

   8. Safety device operation 24

   9. Surface temperature limitation device operation (for S cell only) 24

   10. Storage 25

   11. Charge acceptance at +55 °C for LT, MT or HT cylindrical cells 25

   12. Internal resistance 26

       1. General 26

       2. Measurement of the internal a.c. resistance 26

       3. Measurement of the internal d.c. resistance 27

8. Mechanical tests 27

9. Safety requirements 27

10. Type approval and batch acceptance 27

    1. Type approval 27

       1. Type approval for small prismatic cells and button cells 27

       2. Type approval for cylindrical cells 28

    2. Batch acceptance 29

Bibliography 31

Figure 1 – Jacketed cylindrical cells 11

Figure 2 – Jacketed small prismatic cells 11

Figure 3 – Jacketed cells dimensionally interchangeable with primary cells 12

Figure 4 – Button cells 14

Table 1 – Dimensions of jacketed small prismatic cells 11

Table 2 – Jacketed cylindrical cells dimensionally interchangeable with primary cells 12

Table 3 – Jacketed cylindrical cells not dimensionally interchangeable with primary

cells 13

Table 4 – Dimensions of button cells 14

Table 5 – Discharge performance at 20 °C for small prismatic cells and cylindrical cells 15

Table 6 – Discharge performance at 20 °C for button cells 15

Table 7 – Discharge performance at 0 °C for small prismatic cells and cylindrical cells 16

Table 8 – Discharge performance at 0 °C for button cells 16

Table 9 – Endurance in cycles for small prismatic, button and cylindrical cells not

dimensionally interchangeable with primary cells 17

Table 10 – Endurance in cycles for H or X cells 18

Table 11 – Endurance in cycles for X cells 18

Table 12 – Endurance in cycles for HR or XR cells 19

Table 13 – Permanent charge endurance for L, M, H or X cells 19

Table 14 – Permanent charge endurance for LT, MT or HT cells 21

Table 15 – Permanent charge endurance for LU, MU or HU cells 22

Table 16 – Overcharge at 0 °C 23

Table 17 – Charge and discharge at +55 °C 26

Table 18 – Constant discharge currents used for measurement of d.c. resistance 27

Table 19 – Sequence of tests for type approval for small prismatic and for button cells 28

Table 20 – Sequence of tests for type approval for cylindrical cells 29

Table 21 – Recommended test sequence for batch acceptance 30

INTERNATIONAL ELECTROTECHNICAL COMMISSION

SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES –

PORTABLE SEALED RECHARGEABLE SINGLE CELLS –

Part 2: Nickel-metal hydride

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.

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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 61951-2 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.

This third edition cancels and replaces the second edition published in 2003 of which it constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

• clause 4: addition of 2 parameters;

• clause 5: addition of cells type “S” and cells type “T”;

• subclause 6.1.2: addition of new cylindrical cells;

• subclause 7.8: addition of a specific test for “S” cells.

The text of this standard is based on the following documents:

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.

A list of all parts of the IEC 61951 series can be found, under the general title Secondary cells and batteries containing alkaline or other non-acid electrolytes – Portable sealed rechargeable single cells, on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under "https://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.

SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES –

PORTABLE SEALED RECHARGEABLE SINGLE CELLS –

Part 2: Nickel-metal hydride

1. Scope

   
   

   This part of IEC 61951 specifies marking, designation, dimensions, tests and requirements for portable sealed nickel-metal hydride, small prismatic, cylindrical and button rechargeable single cells, suitable for use in any orientation.

   
   

2. Normative references

   
   

   The following referenced documents are indispensable for the application 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 60050-482, International Electrotechnical Vocabulary – Part 482: Primary and secondary cells and batteries

   
   

   IEC 60086 (all parts), Primary batteries

   
   

   IEC 60086-1 (2006), Primary batteries – Part 1: General

   
   

   IEC 60086-2 (2006), Primary batteries – Part 2: Physical and electrical specifications

   
   

   IEC 60410, Sampling plans and procedures for inspection by attributes

   
   

   IEC 61959, Secondary cells and batteries containing alkaline or other non-acid electrolytes – Mechanical tests for sealed portable secondary cells and batteries

   
   

   IEC 62133, Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for portable sealed secondary cells and for batteries made from them, for use in portable applications

   
   

3. Terms and definitions

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

3.1

nominal voltage

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

NOTE 1 The nominal voltage of a sealed nickel-metal hydride rechargeable single cell is 1,2 V.

NOTE 2 The nominal voltage of a battery of n series connected cells is equal to n times the nominal voltage of a single cell.