EN IEC 62984-2 pdf free download
EN IEC 62984-2 pdf free download.High-temperature secondary batteries – Part 2: Safety requirements and tests.
5 Safety requirements
5.1 Functional safety requirements
5.1.1 Safety of battery management system
Electronic devices and software relied upon for safety shall be compliant with IEC 61508 (all parts).
5.1.2 Battery protective management
If relied upon for maintaining the cells within their specified operating range, the battery management system (BMS) shall maintain cells within the specified voltage, temperature and current during standby, charging and discharging of the battery.
5.1.3 Thermal management
A battery system shall be provided with a thermal management control to ensure safe operation of the battery, including its internal heaters and to prevent the battery from being overheated or otherwise used outside of its specified operating temperature range. The battery management system shall prevent the battery from entering a hazardous state as a result of failure of the thermal management control.
Heaters used to maintain the cells at specified operating temperatures shall be dimensioned for the current and voltage involved and designed to prevent breakages and short circuits from occurring as a result of handling, installation and operation of the battery.
NOTE Good thermal management provides a good level of efficiency.
5.2 Mechanical requirements
5.2.1 General
Subclause 5.2.1 of IEC 62984-1:2020 is applicable with the following additional text:
The enclosure and mechanical support structure(s) for the battery arrangement shall have the strength and rigidity required to resist the possible physical abuses that it will be exposed to during its transport, installation and intended use, in order to reduce hazards.
The battery shall be capable of withstanding, with no harm to users, the vibrations and shocks likely to occur during its transportation, storage, installation and operation according to the intended application (stationary or mobile).
The requirements of 5.2.1 apply not only to modules, but also to the complete battery installation, including module interconnections and supporting structure.
NOTE These requirements do not cover specific applications outside the scope of this document.
5.2.2 Battery enclosure
Subclause 5.2.2 of IEC 62984-1:2020 is applicable with the following additional text:
Unless installed in a protective location that prevents access to hazardous parts of the system,
the battery shall have a minimum IP rating of 1P22 according to IEC 60529.
5.3 Protection against electrical shock
5.3.1 General
The battery shall not jeopardize the safety of people and property.
Users shall be protected against electric shock hazards by the employment of suitable construction and engineering practices.
The testing of components and equipment with regard to protection against electric shock shall be conducted as type tests and routine tests as defined in Clause 6.
Applicable fundamental rules for protection against electrical shock are given in IEC 61140:2016, Clause 4, with application either under normal conditions, or under single fault conditions.
The applicable principles covering these different conditions are given in IEC 61140:2016, 4.1, 4.2 and 4.3.
Provisions and measures for protection against electrical shock are described in IEC 61140:2016, Clause 5 and Clause 6, which are applicable as far as relevant.
5.3.2 Normal conditions
To meet the fundamental rules for protection against electric shock under normal conditions, basic protection is necessary. Basic protection shall consist of one or more provisions that under normal conditions prevent contact with hazardous-live-parts.
NOTE Paints, varnishes, lacquers and similar products alone are generally not considered to provide adequate
insulation for protection against electric shock in normal service.
Basic protection provisions that may be used for basic protection are:
— basic insulation,
— barriers or enclosures,
— obstacles,
— placing out of arm’s reach,
— limitation of voltage,
— limitation of steady state touch current and charge,
— other provisions (complying with the fundamental rules for protection against electric shock). These provisions are described in IEC 61140:2016, 5.2.
Protection against electric shock for class I, II or Ill equipment is applicable to those parts accessible under normal conditions. ELV, PEB, PELV and SELV systems provide protection from electric shock by hazardous-live-parts, and are not necessarily related to a class I, II or Ill equipment class.
Any conductive part that is not separated from the hazardous-live-parts by at least basic insulation shall be considered to be a live part.
An accessible metallic part is considered to be conductive if its surface is bare or is covered by an insulating layer which does not comply with the requirements of basic insulation.EN IEC 62984-2 pdf download.
