IEC 63115-2:2021 pdf download Secondary cells and batteries containing alkaline or other non-acid electrolytes – Sealed nickel-metal hydride cells and batteries for use in industrial applications – Part 2: Safety
1 Scope
This document specifies designations, tests andrequirements for the safe operation of sealednickel-metal hydride cells and batteries used in industrial applications excluding road vehicles.
When an lEC International Standard specifying test conditions and requirements for cells used
in special applications is in conflict with this document, the former takes precedence (e.g.IEc62675).
Since this document covers batteries for various industrialapplications,it includes thoserequirements which are common and minimum to the various applications.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies.
For undated’ references,the latest edition of the referenced document(including anyamendments) applies.
IEC 60050-482,International ElectrotechnicalVocabulary – Part 482: Primary and secondarycells and batteries (available at www.electropedia.org)
IEC 63115-1:2020， Secondary cells and batteries containingalkaline or other non-acidelectrolytes – Sealed nickel-metal hydride cells and batteries for use in industrial applications
– Part 1: Performance
ISOIEC Guide 51,Safety aspects – Guidelines for their inclusion in standards
Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-482,lEC 63115-1,lSO/EC Guide 51, and the following apply.
Iso and IEC maintain terminological databases for use in standardization at the followingaddresses:
. IEC Electropedia: available at http://www.electropedia.orgl
.ISo Online browsing platform: available at http://www.iso.orglobp
3.1
safety
freedom from unacceptable risk
[SOURCE: IEC 60050-903:2013,903-01-19]
3.2risk
combination of the probability of occurrence of harm and the severity of that harm
[SOURCE: IEC 60050-903:2013,903-01-07, modified – The note has been omitted.J]
3.3
harm
physical injury or damage to the health of people, or damage to property or the environment
[SOURCE: IEC 60050-351:2013,351-57-02]
3.4
hazard
potential source of harm
[SOURCE: IEC 60050-351:2013,351-57-01, modified – The note has been omitted.J
3.5
intended use
use of a product,process or service in accordance with the specifications，instructions andinformation provided by the supplier
[SOURCE: IEC 60050-903:2013,903-01-13, modified – The words “specifications”and”instructions” have been added and “for use” omitted.]
3.6
reasonably foreseeable misuse
use of a product, process or service in a way not intended by the supplier, but which may resultfrom readily predictable human behaviour
[SOURCE: IEC60050-903:2013,903-01-14]
3.7
cell
sealed nickel-metal hydride cell
cell containing a nickel hydroxide compound for the positive electrode，a hydrogen absorbingalloy for the negative electrode,and potassium hydroxide or other alikaline solution aselectrolyte，and not releasing either gas or liquid when operated within the limits specified bythe manufacturer
Note 1 to entry. A sealed cell may be equipped with a safety device to prevent a dangerously high internal pressureand is designed to operate during its life in its original sealed state，See IEC 60050-482:2004,482-05-17.,
3.8
cell block
group of cells connected together in parallel configuration with or without protective devices(e.g. fuse or PTC(positive temperature coefficient)) and monitoring circuitry
3.9
monobloc
battery with multiple separate but electrically connected cell compartments each of which isdesigned to house an assembly of electrodes,electrolyte,terminals or interconnections andpossible separators
3.10module
group of cells connected together either in series and/or parallel configuration with or withoutprotective devices (e.g. fuse or PTC) and monitoring circuitry
3.11
battery pack
energy ‘storage device comprised of one or more cells，monoblocs or modules electricallyconnected
Note 1 to entry. A battery pack may have a monitoring circuitry which provides information (e.g. cell voltage) to abattery systemi.
3.12
battery systembattery
system which comprises one or more cells, cell blocks, monoblocs, modules or battery packs
Note 1 to entry. The battery system has a battery management system to cut off current in case of overcharge,overcurrent,overdischarge,or overheating.
Note 2 to entry:Overdischarge cut off is not mandatory if there is an agreement on this between the cellmanufacturer and the customer.
Note 3 to entry: The battery system may have cooling or heating units.Note 4 to entry: The battery system may be enclosed in a battery box.
3.13
battery enclosureenclosure
physical construction which separates the battery or battery system from its externalenvironment
3.14
battery management systemBMS
electronic system associated with a battery which has functions to cut off in case of overcharge,overcurrent, overdischarge, and overheating
Note 1 to entry. The BMS monitors andor manages its state，calculates secondary data，reports that data andlorcontrols its environment to influence the battery’s safety,performance and/or service life.
Note 2 to entry. The function of the BMS can be assigned to the battery pack or to equipment that uses the battery(see Figure 2).