{"id":30643,"date":"2025-01-03T16:56:37","date_gmt":"2025-01-03T08:56:37","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=30643"},"modified":"2025-01-03T17:08:21","modified_gmt":"2025-01-03T09:08:21","slug":"ele7004","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele7004\/","title":{"rendered":"What are the effects of the yield strength of photovoltaic welding ribbons?"},"content":{"rendered":"<p><a href=\"https:\/\/www.ray-tron.com\/en\/pvribbon\/\" data-internallinksmanager029f6b8e52c=\"43\" title=\"Photovoltaic welding ribbon\">Photovoltaic welding ribbon<\/a>The yield strength (also called yield strength) of<a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"14\" title=\"Photovoltaic modules\">Photovoltaic modules<\/a>The yield point is the critical point where the material changes from elastic deformation to plastic deformation when subjected to stress. The yield point of photovoltaic welding ribbon will directly affect the welding effect, durability and overall performance of photovoltaic modules. The following are several key effects of yield point on photovoltaic welding ribbon:<\/p>\n<h3><strong>1. Welding performance and reliability<\/strong><\/h3>\n<ul>\n<li><strong>Adaptability during welding<\/strong>:\n<ul>\n<li>A high yield point of the welding strip means that the material is relatively hard, which may cause cracks or loose welds during the welding process, affecting the welding quality.<\/li>\n<li>On the contrary, a solder strip with too low a yield point may cause excessive deformation during welding or uneven solder joints, reducing the stability of the solder joints.<\/li>\n<li>Therefore, the appropriate yield degree ensures that the solder strip has sufficient plasticity during the welding process so as to be closely bonded to the battery cell while maintaining sufficient strength.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>2. Thermal expansion and contraction after welding<\/strong><\/h3>\n<ul>\n<li><strong>Effects of Temperature Changes on Solder Joints<\/strong>:\n<ul>\n<li>PV panels will experience temperature differences between day and night during long-term use, and temperature changes between the solder ribbons and the cells may cause expansion and contraction.<\/li>\n<li>Solder ribbons with moderate yield strength can remain flexible enough under such temperature cycles to prevent cracks or fall-off in the solder joints, ensuring long-term reliability of the solder joints.<\/li>\n<li>Too high or too low yield strength may affect the thermal cycling performance of the solder joint and cause solder joint failure.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>3. Ductility and fatigue resistance of welding strip<\/strong><\/h3>\n<ul>\n<li><strong>Ductility<\/strong>:\n<ul>\n<li>Welding strips with lower yield points usually have better ductility and can adapt to larger deformations without cracking. This is crucial for the external stresses (such as wind pressure, thermal expansion and contraction) that photovoltaic modules are subjected to during use.<\/li>\n<li>Solder ribbons with good ductility can withstand more mechanical fatigue and reduce solder joint breakage caused by fatigue.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<figure id=\"attachment_30644\" aria-describedby=\"caption-attachment-30644\" style=\"width: 450px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-30644 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2025\/01\/2025010316553996.jpg\" alt=\"\" width=\"450\" height=\"300\" \/><figcaption id=\"caption-attachment-30644\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-30644 lazyload\" src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2025\/01\/2025010316553996.jpg\" alt=\"\" width=\"450\" height=\"300\" srcset=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2025\/01\/2025010316553996.jpg 450w, https:\/\/www.ray-tron.com\/wp-content\/uploads\/2025\/01\/2025010316553996-300x200.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/noscript> <a href=\"https:\/\/www.ray-tron.com\/en\/pvribbon\/\" data-internallinksmanager029f6b8e52c=\"94\" title=\"Photovoltaic welding ribbon supplier_Solar welding ribbon manufacturer_Photovoltaic welding ribbon wholesaler\">Photovoltaic welding ribbon manufacturer<\/a><\/figcaption><\/figure>\n<h3><strong>4. Long-term stability of components<\/strong><\/h3>\n<ul>\n<li><strong>Anti-fatigue and anti-aging properties<\/strong>:\n<ul>\n<li><a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"15\" title=\"Solar panels\">Solar Cells<\/a>During long-term use, the panels will experience daily temperature fluctuations, wind and sand erosion and other external environmental influences. The yield strength of the photovoltaic ribbon affects its stability under such conditions.<\/li>\n<li>The appropriate yield point can keep the soldering ribbon plastic to a certain extent, avoiding solder joint cracks and material aging caused by temperature differences, thereby increasing the life of the photovoltaic module.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>5. Manufacturing and processing technology of welding strip<\/strong><\/h3>\n<ul>\n<li><strong>Process Control<\/strong>:\n<ul>\n<li>During the manufacturing process, high yield ribbons may be more difficult to process and shape, especially when bending or flattening, which may require higher processing temperatures or more complex equipment.<\/li>\n<li>The appropriate yield degree can ensure that the welding strip can be easily processed into the required size and shape during the production process, reducing the production difficulty and cost.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>6. Impact on electrical performance<\/strong><\/h3>\n<ul>\n<li><strong>Resistance and conductivity<\/strong>:\n<ul>\n<li>The yield strength has a certain indirect effect on the conductive properties of the soldering tape. Too high a yield strength may make the soldering tape material brittle, increase the resistance of the conductive path, and reduce the current transmission efficiency.<\/li>\n<li>A soldering strip with too low a yield point may cause excessive deformation of the material and affect the conductivity. Therefore, optimizing the yield point helps to improve the conductivity of the soldering strip.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>7. Mechanical strength of solder joints<\/strong><\/h3>\n<ul>\n<li><strong>Durability of solder joints<\/strong>:\n<ul>\n<li>The welding points of photovoltaic modules are subjected to long-term mechanical stress, including expansion and contraction caused by temperature changes and vibration caused by environmental factors.<\/li>\n<li>Solder strips with moderate yield have better mechanical strength, which can prevent cracks or peeling of solder joints due to frequent stress changes, and ensure the stability of components during use.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>Summarize<\/strong><\/h3>\n<p>The yield of photovoltaic welding ribbon plays a vital role in the welding performance, long-term durability, temperature change adaptability, processing technology, etc. of photovoltaic modules. The optimal yield should be maintained at a moderate level, which can not only ensure the welding quality, but also improve the overall efficiency and service life of photovoltaic modules. Therefore, when purchasing photovoltaic welding ribbon, the regulation of yield should be balanced with other performance indicators (such as ductility, conductivity, etc.).<\/p>","protected":false},"excerpt":{"rendered":"<p>The yield strength of photovoltaic ribbons has an important influence on the welding performance and long-term stability of photovoltaic modules. The yield strength is the change in the material from elastic deformation to [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[227],"class_list":["post-30643","post","type-post","status-publish","format-standard","hentry","category-blog","tag-guangfuhandai"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/30643","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/comments?post=30643"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/30643\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=30643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=30643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=30643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}