{"id":5860,"date":"2023-05-10T15:01:32","date_gmt":"2023-05-10T07:01:32","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=5860"},"modified":"2023-09-01T14:01:28","modified_gmt":"2023-09-01T06:01:28","slug":"ele5775","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele5775\/","title":{"rendered":"Prospects of photovoltaic welding ribbon in the photovoltaic industry"},"content":{"rendered":"

according toPhotovoltaic Industry<\/a>The photovoltaic industry chain mainly includes upstream: silicon materials, battery equipment manufacturers. Midstream: single\/polycrystalline silicon battery and module manufacturers. Downstream: inverters, power stations. Photovoltaic ribbons made of tin-lead solder and copper substrates are mainly used in midstream photovoltaic modules.Photovoltaic welding ribbon<\/a>There are two main types: interconnecting ribbons and busbars.<\/p>\n

Photovoltaic welding strip is a copper strip with a uniform layer of tin-based solder on its surface. Photovoltaic strip is mainly made of copper-based materials, tin alloy coating, flux, etc., and the cost of raw materials accounts for more than 90%. According to the purpose, we can divide it into interconnection strip (connecting cells, welding with cells on the grid line) and busbar (connecting battery strings and junction boxes).<\/p>\n

Composition and cost of photovoltaic modules<\/p>\n

From the perspective of the cost structure of photovoltaic modules, the proportion of welding ribbon in the cost of the module is only 2.7%. However, the quality of welding ribbon products directly affects the current collection efficiency of photovoltaic modules and has a great impact on the power generation of photovoltaic modules.<\/p>\n

1. SMBB will become the mainstream, which will put forward higher requirements on the precision of the welding strip process<\/p>\n

1) Market share forecast of various busbar technologies<\/p>\n

The development of photovoltaic ribbon follows the iteration of photovoltaic cell technology. From the initial 2BB-5BB to the current MBB, the ribbon has also evolved from the initial rolled flat tin-coated ribbon to the current round and special-shaped ribbon. At present, the mainstream photovoltaic ribbon product on the market is MBB ribbon, which is suitable for multi-grid components. It is thinner and denser than traditional tapes. And it helps to reduce the shading of the battery and reduce the power loss of the battery.<\/p>\n

MBB round wire ribbon<\/strong><\/p>\n

As battery technology improves, grid lines are getting smaller<\/p>\n

Traditional round wire tape will develop into thin wire<\/p>\n

The low temperature zone will be a thin line<\/p>\n

MBB special-shaped welding strip<\/strong><\/p>\n

Continue to advance towards reflective busbars<\/p>\n

Ultra-thin husband<\/p>\n

Black welding ribbon<\/strong><\/p>\n

166\/182\/210 Xun Junhui later got involved in segmented welding strips<\/p>\n

Special-shaped solder strips are developing towards thin lines and diversified shapes<\/p>\n

Higher requirements for cycle accuracy and tin layer size accuracy<\/p>\n

Fusion type welding strip<\/strong><\/p>\n

Black interconnect strips and convergent black continue to develop<\/p>\n

The emergence of diversified black solder strips<\/p>\n

\"\"

2) Future technology development trends of photovoltaic welding ribbons<\/p>\n

With the development of new TOPCon and HJT battery technologies, the welding grid line will become thinner, and the SMBB ultra-fine round welding ribbon with a diameter of \u22640.25mm will become the mainstream demand in the future. Photovoltaic welding ribbon will develop in the direction of mainly thin wires. And the welding ribbon it shapes is a supplement to the technical route. The ultra-fine wire of the welding ribbon will inevitably put forward higher requirements on the process accuracy, output, R&D capabilities, financial strength, management capabilities, etc. of the welding ribbon production enterprises, thereby further raising the manufacturing threshold and production capacity concentration of the welding ribbon.<\/p>\n

In addition, the large-scale application of flexible segmented welding strips has given rise to small-pitch unit layout technologies such as welding and surfacing. This micro-innovation was developed based on traditional module technology. Despite this, it still achieves energy density similar to that of shingled modules.<\/p>\n

2. Photovoltaic ribbons are difficult to replace<\/p>\n

Shingled modules partially replace photovoltaic ribbons with conductive adhesives. Compared with traditional modules, shingled modules have obvious advantages in power density, and also have many advantages such as resistance to hot spots. Compared with photovoltaic ribbons, the cost of conductive adhesives is much higher. The relevant technologies and patents are in the hands of a few foreign companies, and to ensure the stable bonding of conductive adhesives, there are also high technical barriers in large-scale mass production.<\/p>\n

In addition, the large-scale application of flexible segmented welding strips has also spawned the birth of small-pitch unit layout technologies such as tailored welding and stack welding. We have developed this micro-innovation based on traditional module technology. Despite this, we have achieved energy density similar to that of cladding.<\/p>","protected":false},"excerpt":{"rendered":"

According to the links of the photovoltaic industry chain, the photovoltaic industry chain mainly includes upstream: silicon materials, battery equipment manufacturers. Midstream: single\/polycrystalline silicon battery and component manufacturers. Downstream: [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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":[253,227],"class_list":["post-5860","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-guangfuhandai"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5860","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=5860"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5860\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=5860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=5860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=5860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}