IEC TR 62914:2014

IEC TR 62914 ®
Edition 1.0 2014-05
TECHNICAL
REPORT
colour
inside
Secondary cells and batteries containing alkaline or other non-acid
electrolytes – Experimental procedure for the forced internal short-circuit
test of IEC 62133:2012
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IEC TR 62914 ®
Edition 1.0 2014-05
TECHNICAL
REPORT
colour
inside
Secondary cells and batteries containing alkaline or other non-acid

electrolytes – Experimental procedure for the forced internal short-circuit

test of IEC 62133:2012
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
L
ICS 29.220.30 ISBN 978-2-8322-1622-4

– 2 – IEC TR 62914:2014 © IEC 2014

CONTENTS
FOREWORD . 3

INTRODUCTION . 5

1 Scope . 6

2 Normative references . 6

3 Experimental procedure of the forced internal short-circuit test . 6

3.1 Example of preparation of nickel particle . 6
3.1.1 Material and tools . 6
3.1.2 Example of a nickel particle preparation procedure . 6
3.2 Positioning (or placement) of a nickel particle . 7
3.3 Damaged separator precaution . 8
3.4 Caution for rewind separator and electrode . 8
3.5 Insulation film for preventing short circuit . 8
3.6 Cautions on disassembling cell . 8
3.7 Protective goods for safety . 9
3.8 Cautions in case of fire during disassembling . 9
3.9 Cautions for disassembling process and pressurizing electrode core . 9
3.10 Recommended specifications of a pressurizing device . 9
Bibliography . 11

Figure 1 – Dimensions of a completed nickel particle . 7
Figure 2 – Positioning of nickel particle when it cannot be placed in the specified area . 8
Figure 3 – Cylindrical cell. 8
Figure 4 – Distance / time ratio of several types of pressurizing devices . 10

Table 1 – Recommended specifications of a pressurizing device . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE

OR OTHER NON-ACID ELECTROLYTES – EXPERIMENTAL

PROCEDURE FOR THE FORCED INTERNAL

SHORT-CIRCUIT TEST OF IEC 62133:2012

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC/TR 62914, which is a technical report, 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.

– 4 – IEC TR 62914:2014 © IEC 2014

The text of this technical report is based on the following documents:

Enquiry draft Report on voting

21A/537/DTR 21A/549/RVC
Full information on the voting for the approval of this technical report 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.

The committee has decided that the contents of this publication will remain unchanged until
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INTRODUCTION
The second edition of IEC 62133 was published on December, 2012. This technical report

provides supplemental information to perform the forced internal short-circuit test of

IEC 62133:2012.
– 6 – IEC TR 62914:2014 © IEC 2014

SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE

OR OTHER NON-ACID ELECTROLYTES – EXPERIMENTAL

PROCEDURE FOR THE FORCED INTERNAL

SHORT-CIRCUIT TEST OF IEC 62133:2012

1 Scope
This Technical Report identifies experimental procedures for the forced internal short-circuit
tests in terms of designation, dimensions, tests and requirements. It supplements 8.3.9 of
IEC 62133:2012.
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 62133:2012, 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 Experimental procedure of the forced internal short-circuit test
3.1 Example of preparation of nickel particle
3.1.1 Material and tools
The necessary material and tools required for this preparation are listed below.
a) a nickel piece: Prepare nickel plate (soft temper; ISO 6208, NW2200 (Ni 99.0) or
+0,05
NW2201 (Ni 99.0 -LC) 0,10 ± 0,01 mm thick made into a piece 0,20 mm wide and
−0,03
2,00 ± 0,30 mm long by slit processing or using a punching press;
b) a stereomicroscope;
c) a cutter knife;
d) glass slides (2 slides: 1 mm or thicker with square corners);
e) a graph paper (1 mm square);
f) a storage container for nickel particles.
3.1.2 Example of a nickel particle preparation procedure
The following steps are to be undertaken:
a) place graph paper on the stage of the stereomicroscope and focus the microscope on the
lines of the graph paper;
b) while looking through the microscope, place the nickel piece parallel to a line of the graph
paper. The nickel piece should be placed horizontally, with its 0,20 mm sides extending
downward perpendicularly from and its 2,0 mm sides running parallel to the line on the
graph paper;
c) place a glass slide vertically over the left half (1,0 mm) of the nickel piece. Use a line of
the graph paper as a guide to position the edge of the glass slide;

d) while holding the glass slide in place with your fingers, fold and raise the right half

(1,0 mm) of the nickel piece using a cutter;

e) place the other glass slide to the right of the nickel piece to sandwich the raised p
...