IEC 62133 pdf download

IEC 62133 pdf download.SECONDARY CELLS AND BATTERIES CONTAINING ALKALINE OR OTHER NON-ACID ELECTROLYTES
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-482 and ISO/IEC Guide 51 , as well as the following apply. 3.1 safety freedom from unacceptable risk 3.2 risk a combination of the probability of occurrence of harm and the severity of that harm 3.3 harm physical injury or damage to the health of people or damage to property or to the environment 3.4 hazard potential source of harm 3.5 intended use use of a product, process or service in accordance with specifications, instructions and information provided by the supplier 3.6 reasonably foreseeable misuse use of a product, process or service in a way which is not intended by the supplier, but which may result from readily predictable human behaviour 3.7 secondary cell basic manufactured unit providing a source of electrical energy by direct conversion of chemical energy, that consists of electrodes, separators, electrolyte, container and terminals, and that is designed to be charged electrically 3.8 secondary battery assembly of secondary cell(s) ready for use as a source of electrical energy characterized by its voltage, size, terminal arrangement, capacity and rate capability 3.9 leakage visible escape of liquid electrolyte 3.1 0 venting release of excessive internal pressure from a cell/battery in a manner intended by design to preclude rupture or explosion 3.1 1 rupture mechanical failure of a cell container or battery case induced by an internal or external cause, resulting in exposure or spillage but not ejection of materials 3.1 2 explosion failure that occurs when a cell container or battery case opens violently and major components are forcibly expelled 3.1 3 fire the emission of flames from a cell or battery 3.1 4 portable battery a battery for use in a device or appliance which is conveniently hand carried 3.1 5 portable cell a cell intended for assembly in a portable battery 3.1 6 polymer cell cell using gel polymer electrolyte or solid polymer electrolyte, not liquid electrolyte 3.1 7 rated capacity quantity of electricity C 5 Ah (ampere-hours) declared by the manufacturer which a single cell can deliver when discharged at the reference test current of 0,2 I t A to a specified final voltage, after charging, storing and discharging under specified conditions 3.1 8 upper limit charging voltage the highest charging voltage in the cell operating region specified by the cell manufacturer 3.1 9 maximum charging current the maximum charging current in the cell operating region which is specified by the cell manufacturer
4 Parameter measurement tolerances
The overall accuracy of controlled or measured values, relative to the specified or actual parameters, shall be within these tolerances.
5 General safety considerations
5.1 General The safety of secondary cells and batteries requires the consideration of two sets of applied conditions: • intended use; • reasonably foreseeable misuse. Cells and batteries shall be so designed and constructed that they are safe under conditions of both intended use and reasonably foreseeable misuse. It is expected that cells or batteries subjected to misuse may fail to function following such experience. They shall not however present significant hazards. It may also be expected that cells and batteries subjected to intended use shall not only be safe but shall continue to be functional in all respects. Potential hazards which are the subject of this standard are:a) fire, b) burst/explosion, c) leakage of cell electrolyte, d) venting, e) burns from excessively high external temperatures, f) rupture of battery case with exposure of internal components. Conformity with 5.2 to 5.7 is checked by inspection, by the tests of Clauses 7 and 8, and in accordance with the appropriate standard (see Clause 2). 5.2 Insulation and wiring The insulation resistance between the positive terminal and externally exposed metal surfaces of the battery excluding electrical contact surfaces shall be not less than 5 MΩ at 500 V d. c. when measured 60 s after applying the voltage. Internal wiring and its insulation shall be sufficient to withstand the maximum anticipated current, voltage and temperature requirements. The orientation of wiring shall be such that adequate clearances and creepage distances are maintained between connectors. The mechanical integrity of internal connections shall be sufficient to accommodate conditions of reasonably foreseeable misuse.