BS IEC 63057-2020 pdf download – Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for secondary lithium batteries for use in road vehicles not for the propulsion.
1 Scope This document specifies safety tests and requirements for secondary lithium batteries permanently installed in road vehicles not for the propulsion. Replacement secondary batteries permanently installed in road vehicles not for propulsion are covered by this document. The following are typical applications that utilize the batteries under the scope of this document: a power source for the starting of internal combustion engines, lighting, on-board auxiliary equipment, and energy absorption for regeneration from braking. This document applies to batteries with a maximum voltage less than or equal to 60 V DC. The batteries primarily used for propulsion of electric vehicles (EVs), including battery electric vehicles (BEVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs) are not covered by this document. NOTE Testing on cell level is specified in IEC 6261 9. 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 60050-482, International Electrotechnical Vocabulary (IEV) – Part 482: Primary and secondary cells and batteries (available at http://www.electropedia.org/) IEC 6261 9:201 7, Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for secondary lithium cells and batteries, for use in industrial applications ISO/IEC Guide 51 , Safety aspects – Guidelines for their inclusion in standards
3.1 battery unit comprising one or more cells, modules and a battery management system 3.2 battery management system BMS set of protection functions associated with a battery to prevent overcharge, overcurrent, over temperature, under temperature and if applicable overdischarge Note 1 to entry: The function of the BMS can be assigned to the battery or to the vehicle that uses the battery. See Figure 1 . Note 2 to entry: The BMS can be divided and it can be found partially in the battery and partially on the equipment that uses the battery. See Figure 1 . Note 3 to entry: The BMS is sometimes also referred to as a BMU (battery management unit). Note 4 to entry: This term applies to the French language only. 3.3 cell secondary cell where electrical energy is derived from the insertion or extraction reactions of lithium ions or oxidation/reduction reaction of lithium between the negative electrode and the positive electrode Note 1 to entry: The cell typically has an electrolyte that consists of a lithium salt and organic solvent compound in liquid, gel or solid form and has a metal or a laminate film casing. It is not ready for use in an application because it is not yet fitted with its final housing, terminal arrangement and electronic control device. 3.4 cell block group of cells connected together in parallel configuration with or without protective devices (e.g. fuse or positive temperature coefficient device) and monitoring circuitry Note 1 to entry: It is not ready for use in an application because it is not yet fitted with its final housing, terminal arrangement and electronic control device. 3.5 explosion failure that occurs when a battery case opens violently, and solid components are forcibly expelled Note 1 to entry: Liquid, gas, and smoke can be erupted. 3.6 final voltage specified closed circuit voltage at which the discharge of a battery is terminated Note 1 to entry: The final voltage should be declared by the battery manufacturer.
5 General safety considerations 5.1 General The safety of lithium secondary batteries requires the consideration of two sets of applied conditions: 1 ) intended use; 2) reasonably foreseeable misuse. 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 batteries subjected to misuse can fail to function. However, even if such a situation occurs, they shall not present any significant hazards. Potential hazards which are the subject of this document are: a) fire, b) explosion. Conformity with 5.1 to 5.7 is checked by the tests of Clauses 6 and 7, and in accordance with the appropriate standard.