BS-EN-61951-1-2001 IEC-61951-1-2001.pdf

BRITISH STANDARD BS EN 61951-1:2001 IEC 61951-1:2001 Secondary cells and batteries containing alkaline or other non-acid electrolytes Portable sealed rechargeable single cells Part 1: Nickel-cadmium The European Standard EN 61951-1:2001 has the status of a British Standard ICS 29.220.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61951-1:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 6 September 2001 © BSI 6 September 2001 ISBN 0 580 38356 3 National foreword This British Standard is the official English language version of EN 61951-1:2001. It is identical with IEC 61951-1:2001. The UK participation in its preparation was entrusted to Technical Committee PEL/21/1, Alkaline secondary cells and batteries, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 33 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 61951-1 NORME EUROPÉENNE EUROPÄISCHE NORMMay 2001 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61951-1:2001 E ICS 29.220.30 English version Secondary cells and batteries containing alkaline or other non-acid electrolytes - Portable sealed rechargeable single cells Part 1: Nickel-cadmium (IEC 61951-1:2001) Accumulateurs alcalins et autres accumulateurs à électrolyte non acide - Accumulateurs individuels portables étanches Partie 1: Nickel-cadmium (CEI 61951-1:2001) Sekundärzellen und Batterien mit alkalischem oder anderen nichtsäurehaltigen Elektrolyten - Tragbare wiederaufladbare gasdichte Einzelzellen Teil 1: Nickel-Cadmium (IEC 61951-1:2001) This European Standard was approved by CENELEC on 2001-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 21A/292/FDIS, future edition 1 of IEC 61951-1, prepared by SC 21A, Secondary cells and batteries containing alkaline or other non-acid electrolytes, of IEC TC 21, Secondary cells and batteries, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61951-1 on 2001-03-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2001-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 2004-03-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61951-1:2001 was approved by CENELEC as a European Standard without any modification. _ EN 619511:2001 2 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 CONTENTS Page INTRODUCTION .11 Clause 1General 7 1.1Scope. 7 1.2Normative references 7 1.3Definitions 7 1.4Parameter measurement tolerances 8 2Designation and marking 8 2.1Cell designation 8 2.1.1Small prismatic cells . 8 2.1.2Cylindrical cells. 9 2.1.3Button cells. 9 2.2Cell termination10 2.2.1Connection-free cells “CF“ .10 2.2.2Cells with connection tabs on the cover and along the length, “HH“.10 2.2.3Cells with connection tabs on the cover and on the base, “HB“ .10 2.3Marking .11 2.3.1Small prismatic cells and cylindrical cells11 2.3.2Button cells11 3Dimensions.12 3.1Small prismatic cells 12 3.2Cylindrical cells13 3.3Button cells14 4Electrical tests 15 4.1Charging procedure for test purposes.15 4.2Discharge performance16 4.2.1Discharge performance at 20 °C.16 4.2.2Discharge performance at 18 °C.17 4.3Charge (capacity) retention 18 4.4Endurance .18 4.4.1Endurance in cycles .18 4.4.2Permanent charge endurance.20 4.5Charge acceptance at constant voltage 23 4.6Overcharge23 4.6.1Overcharge for small prismatic cells.23 4.6.2Overcharge for L, M, H and X cylindrical cells and button cells24 4.6.3Overcharge for LT, MT and HT cylindrical cells.24 4.7Safety device operation24 4.8Storage25 EN 619511:2001 3 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 4.9Charge efficiency at +40 °C for LT, MT and HT cylindrical cells 25 4.10Internal resistance .26 4.10.1 Measurement of the internal a.c. resistance26 4.10.2 Measurement of the internal d.c. resistance26 5Mechanical tests .27 6Conditions for approval and acceptance 27 6.1Type approval27 6.1.1Type approval for small prismatic cells .27 6.1.2Type approval for cylindrical cells and sealed nickel-cadmium button cells.28 6.2Batch acceptance 31 Bibliography 32 Figure 1 Connection-free cells KR . CF.10 Figure 2 Head-head configuration KR . HH10 Figure 3 Head-base configuration KR . HB10 Figure 4 Jacketed small prismatic cell.12 Figure 5 Jacketed cylindrical cells interchangeable with primary batteries13 Figure 6 Button cells.14 Table 1 Dimensions of jacketed small prismatic cells 12 Table 2 Cylindrical cells interchangeable with primary batteries.13 Table 3 Jacketed cylindrical cells14 Table 4 Dimensions of button cells .15 Table 5 Discharge performance at 20 °C for small prismatic cells16 Table 6 Discharge performance at 20 °C for cylindrical cells .16 Table 7 Discharge performance at 20 °C of button cells 17 Table 8 Discharge performance at 18 °C for small prismatic cells17 Table 9 Discharge performance at 18 °C for cylindrical cells .17 Table 10 Discharge performance at 18 °C for button cells .18 Table 11 Endurance in cycles for small prismatic cells and for cylindrical cells 19 Table 12 Endurance in cycles of button cells.20 Table 13 Permanent charge endurance for L, M, H or X cylindrical cells21 Table 14 Permanent charge endurance for button cells.21 Table 15 Permanent charge endurance for LT, MT, or HT cylindrical cells.23 EN 619511:2001 4 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 Table 16 Overcharge at 0 °C 24 Table 17 Charge and discharge at +40 °C.25 Table 18 Constant discharge currents used for measurement of d.c. resistance 27 Table 19 Sequence of tests for type approval for small prismatic cells.28 Table 20a Sequence of tests for type approval for cylindrical cells.29 Table 20b Sequence of tests for type approval for button cells 30 Table 21 Recommended test sequence for batch acceptance .31 EN 619511:2001 5 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 INTRODUCTION 1. This International Standard is an amalgamation of all currently valid standards for portable sealed nickel-cadmium secondary single cells: IEC 60285, 1999, IEC 60509, 1988 and IEC 61440, 1997. It complies with the objective of reducing the number of valid standards, and does not introduce technical modifications in the original standards. If, in the future, this standard is amended, the relevant original standards will be cancelled. 2. Traditionally, the manufacturers and users of alkaline secondary cells and batteries have expressed the current used to charge and discharge these cells and batteries as a multiple of the capacity. For example, a current of 20 A used to charge (or discharge) a cell with a rated capacity (C Ah) of 100 Ah would be expressed as C/5 A or 0,2 C A. This method of current designation has been used in earlier standards relating to alkaline secondary cells and batteries. Comments have been made, that this method of current designation is dimensionally incorrect in that a multiple of the capacity (ampere-hours) will be in ampere-hours and not, as required for current, in amperes. As a result of these comments, the method described in IEC 61434 has been used in this standard. In brief, the method states that the reference test current (It) is expressed as: It A = CnAh/1 h where Cn is the rated capacity declared by the manufacturer in ampere-hours (Ah), and n is the time base in hours (h) for which the rated capacity is declared. EN 619511:2001 6 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES PORTABLE SEALED RECHARGEABLE SINGLE CELLS Part 1: Nickel-cadmium 1 General 1.1 Scope This International Standard specifies marking, designation, dimensions, tests and requirements for portable sealed nickel-cadmium small prismatic, cylindrical and button rechargeable single cells, suitable for use in any orientation. 1.2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. IEC 60051 (all parts), Direct acting indicating analogue electrical measuring instruments and their accessories IEC 60086 (all parts), Primary batteries IEC 60410, Sampling plans and procedures for inspection by attributes IEC 60485, Digital electronic d.c. voltmeters and d.c. electronic analogue-to-digital converters 1.3 Definitions For the purposes of this International Standard, the following definitions apply: 1.3.1 small prismatic cell cell in the form of a rectangular parallelepiped whose width and thickness dimensions are not more than 25 mm 1.3.2 cylindrical cell cell of circular cross-section in which the overall height is equal to or greater than the overall diameter EN 619511:2001 7 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 14:17:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI © BSI 6 September 2001 1.3.3 button cell cell of a circular cross-section in which the overall height is less than the overall diameter 1.3.4 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. The cell is equipped with a safety device to prevent dangerously high internal pressure. The cell does not require addition to the electrolyte and is designed to operate during its life in its original sealed state 1.3.5 nominal cell voltage the nominal voltage of a single sealed nickel-cadmium rechargeable single cell is 1,2 V 1.3.6 portable battery a cell designed for use in an easily hand-carried battery 1.3.7 rated capacity quantity of electricity C5Ah (ampere hours) declared by the manufacturer which a single cell can deliver at the reference test current of 0,2 It A to a final voltage of 1,0 V at +20 °C after charging, storing and discharging under the conditions specified in clause 4 1.4 Parameter measurement tolerances The overall accuracy of controlled or measured values, relative to the specified or actual values, shall be within the following tolerances: a) ?1 %for voltage; b) ?1 %for current; c)?1 %for capacity; d) ?2 °Cfor temperature; e) ?0,1 %for time. These tolerances comprise the combined accuracy of the measuring instruments, the measurement techniques used and all other sources of error in the test procedure. For assistance in selecting instrumentation, see IEC 60051 series for analogue instruments and IEC 60485 for digital instruments. The details of the instrumentation used shall be provided in each report of results. 2 Designation and marking 2.1 Cell designation 2.1.1 Small prismatic cells Sealed nickel-cadmium small prismatic rechargeable single cells shall be d