IEC 62925-2016 Concentrator photovoltaic (CPV) modules - Thermal cycling test to differentiate increased thermal fatigue durability《聚光光伏(CPV)模组 区分热疲劳耐久性增加的热循环试验》.pdf

1、 IEC 62925 Edition 1.0 2016-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Concentrator photovoltaic (CPV) modules Thermal cycling test to differentiate increased thermal fatigue durability Modules photovoltaques concentration (CPV) Essai de cycles thermiques pour la dtermination de la durabilit ren

2、force la fatigue thermique IEC 62925:2016-12(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includ

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19、ore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62925 Edition 1.0 2016-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Concentrator photovoltaic (CPV) modules Thermal cycling test to differentiate increased

20、thermal fatigue durability Modules photovoltaques concentration (CPV) Essai de cycles thermiques pour la dtermination de la durabilit renforce la fatigue thermique INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 27.160 ISBN 978-2-8322-3725-0 Registered tradem

21、ark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2

22、IEC 62925:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 6 4 Sampling . 7 5 Marking . 7 6 Testing 8 7 Rating 8 8 Report . 8 9 Modifications . 9 10 Test procedure 9 10.1 General . 9 10.2 Cell evaluation 9 10.2.1 Purpose . 9 10.2.2 Proce

23、dure 10 10.2.3 Requirements 10 10.3 Thermal cycling. 10 10.3.1 Purpose . 10 10.3.2 Test sample . 10 10.3.3 Procedure 10 10.4 Outdoor exposure test 12 10.4.1 Purpose . 12 10.4.2 Procedure 12 Bibliography 13 Figure 1 Number of required cycles as a function of average temperature ramp rate in order to

24、complete an equivalent test . 11 Figure 2 Overall test time as a function of temperature ramp rate 12 IEC 62925:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CONCENTRATOR PHOTOVOLTAIC (CPV) MODULES THERMAL CYCLING TEST TO DIFFERENTIATE INCREASED THERMAL FATIGUE DURABILITY FOREWORD 1) T

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35、e 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 62925 has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. The text of this standa

36、rd is based on the following documents: FDIS Report on voting 82/1185/FDIS 82/1210/RVD Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Direc

37、tives, Part 2. 4 IEC 62925:2016 IEC 2016 The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed

38、, withdrawn, replaced by a revised edition, or amended. IEC 62925:2016 IEC 2016 5 INTRODUCTION IEC 62108 defines IEC requirements for the design qualification of concentrator modules for long-term operation in general open-air climates. This standard, IEC 62925, is not compulsory with but will suppl

39、ement IEC 62108 by providing tests that differentiate thermal fatigue durability of concentrator modules for deployment in a larger range of applications and climates. 6 IEC 62925:2016 IEC 2016 CONCENTRATOR PHOTOVOLTAIC (CPV) MODULES THERMAL CYCLING TEST TO DIFFERENTIATE INCREASED THERMAL FATIGUE DU

40、RABILITY 1 Scope This document defines a test sequence that will quickly uncover CPV module failures that have been associated with field exposure to thermal cycling for many years. This document was specifically developed to relate to thermal fatigue failure of the HCPV die-attach, however, it also

41、 applies, to some extent, to all thermal fatigue related failure mechanisms for the assemblies submitted to test. IEC 62108, the CPV module qualification test already includes an accelerated thermal cycle sequence in one leg of the testing, however, the parameters of that test only represent a quali

42、fication level of exposure. This test procedure applies more stress and will provide a route for comparative testing to differentiate CPV modules with improved durability to thermal cycling and the associated mechanical stresses. 2 Normative references The following documents are referred to in the

43、text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62108:2016, Concentrator photovoltaic (C

44、PV) modules and assemblies Design qualification and type approval 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at

45、http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1 durability systems capacity to resist degradation specific for a particular stress or set of stresses Note 1 to entry: The durability with respect to all relevant stresses shall be assessed in order to g

46、ain information about the anticipated performance of the system. 3.2 reliability probability for a system to perform and maintain its designed function in specific conditions for a specified period of time Note 1 to entry: In this context the term reliability shall be accompanied by three numbers: a

47、) a specified period of time, b) a criterion that quantifies its performance at that time and c) the probability that the criterion will be met. IEC 62925:2016 IEC 2016 7 3.3 concentrator receiver group of one or more concentrator cells and secondary optics (if present) that accepts concentrated sun

48、light and incorporates the means for thermal and electric energy transfer. A receiver could be made of several sub-receivers. The sub-receiver is a physically standalone, smaller portion of the full-size receiver SOURCE: IEC 62108:2016, 3.4 3.4 concentrator module group of receivers, optics, and oth

49、er related components, such as interconnection and mounting, that accepts unconcentrated sunlight. All above components are usually prefabricated as one unit, and the focus point is not field adjustable Note 1 to entry: A module could be made of several sub-modules. The sub-module is a physically stand-alone, smaller portion of the full-size module. SOURCE: IEC 62108:2016, 3.5 3.5 concentrator assembly gro