BS EN 61951-2:2017 – TC:2020 Edition
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Tracked Changes. Secondary cells and batteries containing alkaline or other non acid electrolytes. Secondary sealed cells and batteries for portable applications – Nickel-metal hydride
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 102 |
IEC 61951-2:2017 is also available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 61951-2:2017 specifies marking, designation, dimensions, tests and requirements for secondary sealed nickel-metal hydride small prismatic, cylindrical and button cells and batteries, suitable for use in any orientation, for portable applications. This edition includes the following significant technical changes with respect to the previous edition: – addition of battery type; – addition of ‘F’ (high recovery type) designation for cells and batteries; – addition of ‘I’ (low self-discharge type) designation for cells; – revision of Figure 3 (6.1.3.1); – addition of “optional pip” note to positive contact; – changed leader line position from pip to flats of positive contact (B and G).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 52 | National foreword |
| 57 | English CONTENTS |
| 60 | FOREWORD |
| 62 | 1 Scope 2 Normative references 3 Terms and definitions |
| 64 | 4 Parameter measurement tolerances |
| 65 | 5 Cell and battery designation and marking 5.1 Cell and battery designation 5.1.1 Small prismatic cells and cylindrical cells |
| 66 | 5.1.2 Button cells |
| 67 | 5.1.3 Batteries 5.2 Cell or battery termination 5.3 Marking 5.3.1 Small prismatic cells and cylindrical cells |
| 68 | 5.3.2 Button cells 5.3.3 Batteries 5.4 Exemption of wording 6 Dimensions 6.1 Small prismatic cells and cylindrical cells 6.1.1 General |
| 69 | 6.1.2 Small prismatic cells 6.1.3 Cylindrical cells Figures Figure 1 – Jacketed cylindrical cells Figure 2 – Jacketed small prismatic cells Tables Table 1 – Dimensions of jacketed small prismatic cells |
| 70 | Figure 3 – Jacketed cells dimensionally interchangeable with primary cells Table 2 – Dimensions of jacketed cylindrical cells dimensionally interchangeable with primary cells |
| 71 | 6.2 Button cells Table 3 – Dimensions of jacketed cylindrical cells not dimensionally interchangeable with primary cells |
| 72 | 6.3 9 V type nickel-metal hydride batteries Figure 4 – Button cells Figure 5 – 9 V type nickel-metal hydride batteries Table 4 – Dimensions of button cells |
| 73 | 7 Electrical tests 7.1 General 7.2 Charging procedure for test purposes 7.2.1 Charging procedure for cell 7.2.2 Charging procedure for battery 7.3 Discharge performance 7.3.1 General Table 5 – Dimensions of 9 V type nickel-metal hydride batteries |
| 74 | 7.3.2 Discharge performance at 20 °C Table 6 – Discharge performance at 20 °C forsmall prismatic cells and cylindrical cells Table 7 – Discharge performance at 20 °C for button cells |
| 75 | 7.3.3 Discharge performance at 0 °C Table 8 – Discharge performance at 20 °C for batteries Table 9 – Rated capacity (mAh) compliance test (example) |
| 76 | 7.3.4 Discharge performance for rapid charge cells (R cells) 7.4 Charge (capacity) retention Table 10 – Discharge performance at 0 °C forsmall prismatic cells and cylindrical cells Table 11 – Discharge performance at 0 °C for button cells |
| 77 | 7.5 Endurance 7.5.1 Endurance in cycles Table 12 – Endurance in cycles for small prismatic, button and cylindrical cells not dimensionally interchangeable with primary cells |
| 78 | Table 13 – Endurance in cycles for H or X cells Table 14 – Endurance in cycles for X cells |
| 79 | Table 15 – Endurance in cycles for HR or XR cells Table 16 – Endurance in cycles for cylindrical cells dimensionally interchangeable with primary cells |
| 80 | 7.5.2 Permanent charge endurance Table 17 – Permanent charge endurance for L, M, H or X cells |
| 81 | Table 18 – Permanent charge endurance for LT, MT or HT cells |
| 83 | 7.6 Charge acceptance at constant voltage 7.7 Overcharge 7.7.1 Small prismatic, L, M, H, X, LS or MS cylindrical, and button cells Table 19 – Permanent charge endurance for LU, MU or HU cells |
| 84 | 7.7.2 LT/LU, MT/MU or HT/HU cylindrical cells 7.7.3 J cylindrical cells 7.7.4 JT cylindrical cells Table 20 – Overcharge at 0 °C |
| 85 | 7.7.5 R cylindrical cells 7.8 Safety device operation 7.9 Surface temperature limitation device operation (for S cell only) |
| 86 | 7.10 Storage 7.10.1 Button cells or batteries, small prismatic cells or batteries, cylindrical cells or batteries |
| 87 | 7.10.2 Button cells or batteries, small prismatic cells or batteries, cylindrical cells or batteries (high recovery type) Table 21 – Capacity deterioration due to storage period for cells or batteries |
| 88 | 7.11 Charge acceptance at +55 °C for LT, MT or HT cylindrical cells Table 22 – Capacity deterioration due to storage period for cells or batteries (high recovery type) |
| 89 | 7.12 Trickle charge acceptance for JT cylindrical cells 7.13 Internal resistance 7.13.1 General Table 23 – Charge and discharge at +55 °C Table 24 – Trickle charge acceptance for JT cylindrical cells |
| 90 | 7.13.2 Measurement of the internal AC resistance 7.13.3 Measurement of the internal DC resistance |
| 91 | 8 Mechanical tests 9 Safety requirements 10 Type approval and batch acceptance 10.1 General 10.2 Type approval 10.2.1 Type approval for small prismatic cells and button cells Table 25 – Constant discharge currents usedfor measurement of DC resistance |
| 92 | Table 26 – Sequence of tests for type approval for small prismatic cells |
| 93 | Table 27 – Sequence of tests for type approvalfor small prismatic cells (high recovery type) |
| 94 | Table 28 – Sequence of tests for type approval for button cells |
| 95 | 10.2.2 Type approval for cylindrical cells Table 29 – Sequence of tests for type approval for button cells (high recovery type) |
| 96 | Table 30 – Sequence of tests for type approval for cylindrical cells |
| 97 | 10.2.3 Type approval for batteries Table 31 – Sequence of tests for type approval for cylindrical cells (high recovery type) |
| 98 | 10.3 Batch acceptance Table 32 – Sequence of tests for type approval for batteries Table 33 – Sequence of tests for type approval for batteries (high recovery type) |
| 99 | Table 34 – Recommended test sequence for batch acceptance |
| 100 | Bibliography |
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