{"id":7588,"date":"2023-07-18T11:13:57","date_gmt":"2023-07-18T03:13:57","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=7588"},"modified":"2023-08-09T14:04:48","modified_gmt":"2023-08-09T06:04:48","slug":"alt1161","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/alt1161\/","title":{"rendered":"Analysis on the current status and development trend of photovoltaic convergence ribbon market"},"content":{"rendered":"<p><a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"14\" title=\"Photovoltaic modules\">Photovoltaic Industry<\/a>There is an urgent need to reduce costs and increase efficiency, and the pace of technological innovation is fast. New photovoltaic technologies have raised the performance requirements for welding ribbons, such as the thinner MBB welding ribbons required by multi-grid module technology, the low-temperature welding ribbons with a melting point of no more than 175\u00b0C required by HJT battery technology, and the special-shaped welding ribbons that can reflect sunlight used by module manufacturers in pursuit of extreme power.<\/p>\n<p><a href=\"https:\/\/www.ray-tron.com\/en\/pvribbon\/\" data-internallinksmanager029f6b8e52c=\"43\" title=\"Photovoltaic welding ribbon\">Photovoltaic welding ribbon<\/a>It has developed from the two major categories of traditional interconnect strips and busbars to multiple sub-categories such as conventional welding ribbons, MBB welding ribbons, low-temperature welding ribbons, low-resistance welding ribbons, special-shaped welding ribbons, punching welding ribbons, black welding ribbons, and shingled welding ribbons.<\/p>\n<p>The derivation of varieties has brought higher processing profits to welding ribbon manufacturers, but also brought more challenges to the development and upgrading of processes. The production of photovoltaic welding ribbons integrates key technologies such as size, mechanical properties, surface structure, concentricity, and tinning process. By disassembling the technical indicators, it can be found that there are many technical points in this process, and the threshold is not as low as that of ordinary wires and cables.<\/p>\n<p>The first is the miniaturization of appearance size. The photovoltaic welding ribbon is generally a few millimeters wide, the copper substrate thickness is a few tenths of a millimeter, and the single-sided coating thickness is about 5-30\u03bcm, which is a millimeter-level refined product. The appearance size of the welding ribbon not only affects the resistivity of the welding ribbon, but also forms a certain shielding for the photovoltaic cell.<\/p>\n<figure id=\"attachment_7493\" aria-describedby=\"caption-attachment-7493\" style=\"width: 450px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-7493 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/07\/2023070517022268.jpg\" alt=\"Photovoltaic busbar manufacturer and wholesaler\" width=\"450\" height=\"300\" \/><figcaption id=\"caption-attachment-7493\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-full wp-image-7493 lazyload\" src=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/07\/2023070517022268.jpg\" alt=\"Photovoltaic busbar manufacturer and wholesaler\" width=\"450\" height=\"300\" srcset=\"https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/07\/2023070517022268.jpg 450w, https:\/\/www.ray-tron.com\/wp-content\/uploads\/2023\/07\/2023070517022268-300x200.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/noscript> <a href=\"https:\/\/www.ray-tron.com\/en\/pvbusbar\/\" data-internallinksmanager029f6b8e52c=\"20\" title=\"Photovoltaic busbar supplier_Solar busbar manufacturer_Photovoltaic busbar wholesaler\">Photovoltaic busbar manufacturer<\/a>Wholesaler<\/figcaption><\/figure>\n<p>Second, mechanical performance requirements. Too soft welding strips generate very little stress during welding, which can reduce the breakage rate of the battery, but too soft photovoltaic welding strips are easy to break. Therefore, technical indicators such as tensile strength, yield strength, and stress level need to be balanced to the optimal critical value to meet the requirements of downstream component manufacturers for welding process technology. Yield strength refers to the limit value of the yield phenomenon of metal materials under the action of external forces. If it is greater than this limit value, the metal material will be unable to recover after bending. From the actual application situation, if the yield strength of the welding strip is less than 58MPa, the component is prone to displacement when laying the welding strip, resulting in inaccurate welding alignment. If the yield strength is greater than 70MPa, the risk of hidden cracks in the component may increase.<\/p>\n<p>Third, the surface structure. The surface structure of the photovoltaic ribbon has a certain influence on the power generation of the module. The photovoltaic module with a planar structure will cause the power loss of the photovoltaic module of 3%. If the principle of functional total reflection is applied to change the surface structure of the ribbon, when the sunlight is incident on the surface of the photovoltaic ribbon, the light occurs on the surface of the photovoltaic ribbon. The total reflection can increase the power generation of the module.<a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"15\" title=\"Solar panels\">Solar Cells<\/a>The total amount of light the component receives.<\/p>\n<p>Fourth, concentricity. Concentricity refers to the degree of deviation of the inner diameter of the core from the center of the entire circle, that is, the degree of deviation between the center of the copper wire and the center of the welding strip. This indicator mainly depends on the uniformity of the coating thickness. The lower the concentricity of the welding strip, the higher the risk of cold welding during component welding, and it is easy to produce hot spot effects during power generation, causing component burning. The standard parameter of concentricity is \u226540%, and the concentricity index of the industry leader is controlled above 60%.<\/p>\n<p>5. The tinning process level of photovoltaic welding strips and the thickness of copper substrates. To ensure the firmness of welding, the tinning layer thickness of the welding strip welding section is required to be about 20\u03bcm to achieve more stable welding of copper cells, and the tinning thickness of the non-welding section is required to be about 5mm to reduce the resistance of the welding strip and thus improve the conductive efficiency of the welding strip. At the same time, the welding section and the non-welding section should maintain a millimeter-level interval. If the tin layer is too thin, it is easy to cause cold soldering, and if it is too thick, tin beads or tin piles will be generated, which will affect the appearance of the component and increase the risk of hidden cracks in the component. Therefore, the process level is required to be high, and the standard parameter of the tin layer thickness is the standard value \u00b15\u03bcm.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"142\">Conventional busbar<\/td>\n<td width=\"142\">index<\/td>\n<td width=\"142\"><a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"19\" title=\"Ruichuang 2\">Raytron<\/a><\/td>\n<td width=\"142\">Industry Average<\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Coating thickness<\/td>\n<td width=\"142\">20\u00b15um<\/td>\n<td width=\"142\">25\u00b15um<\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Finished product thickness<\/td>\n<td width=\"142\">\u00b10.01mm<\/td>\n<td width=\"142\">\u00b10.02mm<\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Finished product width<\/td>\n<td width=\"142\">\u00b10.1mm<\/td>\n<td width=\"142\">\u00b10.1mm<\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">tensile strength<\/td>\n<td width=\"142\">150-270<\/td>\n<td width=\"142\"><\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Elongation<\/td>\n<td width=\"142\">\u226525%<\/td>\n<td width=\"142\"><\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Resistivity<\/td>\n<td width=\"142\">\u22640.023\u03a9*mm2\/m<\/td>\n<td width=\"142\"><\/td>\n<\/tr>\n<tr>\n<td width=\"142\"><\/td>\n<td width=\"142\">Yield<\/td>\n<td width=\"142\">58-70<\/td>\n<td width=\"142\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Companies that have demand for conventional photovoltaic busbars can also contact us directly. As a first-class busbar manufacturer in the industry, Ruichuang produces busbars with guaranteed quality and considerate follow-up services. It is definitely your best choice for cooperation.<\/p>","protected":false},"excerpt":{"rendered":"<p>The photovoltaic industry is in urgent need of reducing costs and increasing efficiency, and the pace of technological innovation is fast. New photovoltaic technologies have raised the performance requirements for welding strips, such as the multi-grid module technology requiring MBB welding with a thinner wire diameter [\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":"","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":[253,225],"class_list":["post-7588","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-huiliudai"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/7588","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=7588"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/7588\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=7588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=7588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=7588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}