IEC 62877-2-2016 Electrolyte and water for vented lead acid accumulators - Part 2 Requirements for water《开口型铅酸蓄电池的电解质和水 第2部分 水的要求》.pdf

1、 IEC 62877-2 Edition 1.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrolyte and water for vented lead acid accumulators Part 2: Requirements for water lectrolyte et eau pour accumulateurs plomb-acide ouverts Partie 2: Exigences pour leau IEC 62877-2:2016-01(en-fr) THIS PUBLICATION IS CO

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19、cation ou si vous avez des questions contactez-nous: csciec.ch. IEC 62877-2 Edition 1.0 2016-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrolyte and water for vented lead acid accumulators Part 2: Requirements for water lectrolyte et eau pour accumulateurs plomb-acide ouverts Partie 2: Exigen

20、ces pour leau INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.220.20 ISBN 978-2-8322-3138-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obta

21、ined this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 62877-2:2016 IEC 2016 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references. 5 3 Terms and definitions 5 4 Physical and chemical requirements

22、of water for lead-acid batteries . 6 5 Storage of purified water 7 Bibliography . 8 Table 1 Physical properties and requirements of purified water . 6 Table 2 Chemical properties and requirements of purified water 6 IEC 62877-2:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTROLYTE

23、AND WATER FOR VENTED LEAD ACID ACCUMULATORS Part 2: Requirements for water FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote in

24、ternational co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (herea

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31、lication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect

32、, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the co

33、rrect application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62877-2 has been prepared

34、 by IEC technical committee 21: Secondary cells and batteries. The text of this standard is based on the following documents: FDIS Report on voting 21/875/FDIS 21/882/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above tabl

35、e. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 4 IEC 62877-2:2016 IEC 2016 A list of all parts of the IEC 62877 series can be found, under the general title Electrolyte and water for vented lead acid accumulators on the IEC website. The committee has decided

36、that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. I

37、EC 62877-2:2016 IEC 2016 5 ELECTROLYTE AND WATER FOR VENTED LEAD ACID ACCUMULATORS Part 2: Requirements for water 1 Scope This part of IEC 62877 applies to water for use with vented lead-acid cells and batteries, i.e. water for preparation of electrolyte and for topping up cells or batteries. The pu

38、rity of refilling water has to meet higher requirements compared to filling electrolyte, because the impurities in the operating electrolyte will be gradually increased by regular addition of water. This international standard lays down requirements of the composition, purity and properties of water

39、 in the absence of specific recommendations from the manufacturer. 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,

40、 the latest edition of the referenced document (including any amendments) applies. IEC 62877-1, Electrolyte and water for vented lead acid accumulators Part 1: Requirements for electrolyte 3 Terms and definitions 3.1 electrolyte diluted sulfuric acid (H 2 SO 4 ) for lead-acid accumulators. The elect

41、rolyte is prepared by mixing concentrated sulfuric acid or sulfuric acid with high density of d 1,30 kg/l and purified water to achieve the density values specified by the battery manufacturer or specified in standards related to the type and battery design in question for a defined state of charge

42、Note 1 to entry: Concentrated sulfuric acid is a colorless, high corrosive and etching liquid with a density 1,84 kg/l. 3.2 water purified water (H 2 O) used for the preparation of electrolyte for batteries and for the replacement (topping up) of water loss in the operating electrolyte due to decomp

43、osition of water by overcharging and evaporation 3.3 reference temperature value specified by the battery manufacturer for the indication of properties, such as the nominal electrolyte density, the maximum electrolyte level and the nominal capacity of the battery. The value of the nominal temperatur

44、e for the indication of parameters may differ depending on the battery type and application 6 IEC 62877-2:2016 IEC 2016 3.4 impurities In practical use, the electrolyte may include impurities which cause damage to the battery or reduce its power or its service life. Water added to the electrolyte wi

45、ll increase the level of impurities. The type and maximum allowed content of impurities of purified water are specified in the following tables 3.5 operating electrolyte electrolyte present in the battery following the first filling. The values of density and impurities of the operating electrolyte

46、may deviate from the values of the filling electrolyte due to impurity input from replenishment by water and to elution from e.g. separators, active materials and electrode grids 4 Physical and chemical requirements of water for lead-acid batteries Water for the preparation of electrolyte or topping

47、-up of batteries shall meet the physical requirements as given in Table 1. The chemical limit values as specified in Table 2 shall not be exceeded. Purified water in compliance with the requirements can be prepared from tap water by distillation or by means of ion exchangers. Table 1 Physical proper

48、ties and requirements of purified water Appearance clear, colorless, odorless, free from oil drips pH value 5 to 7 Electric conductivity at 20 C freshly prepared up to being filled into the cell 10 S/cm 30 S/cm Table 2 Chemical properties and requirements of purified water Cons. No. Impurities mg/l

49、max. Limit value comment 1 evaporation residue 10 2 oxidable organic substances 20 calculated as KMnO 43 Lead (Pb), Antimony (Sb), Arsenic(As), Tin (Sn), Bismuth(Bi), Copper(Cu), Cadmium(Cd), Zink( Zn), Selenium (Se), Tellurium(Te), each element individually all together 0,1 0,5 4 Iron(Fe), Cobalt(Co), Nickel(Ni), Chromium (Cr) , Manganese(Mn) each element individually all together 0,1 0,5 5 Halogens 0,5 calculated