{"id":5927,"date":"2023-05-15T16:32:25","date_gmt":"2023-05-15T08:32:25","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=5927"},"modified":"2023-09-01T14:02:51","modified_gmt":"2023-09-01T06:02:51","slug":"ele5786","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele5786\/","title":{"rendered":"What are the types of solar tinned copper strips?"},"content":{"rendered":"

Photovoltaic welding ribbon<\/a>, also known asTinned copper strip<\/a>or solar strip line. It isPhotovoltaic modules<\/a>An important component of photovoltaic cells, used for the connection of photovoltaic cells in the package. It leads the electrical energy converted from light to silicon wafers to electrical devices, and plays an important role in conducting and collecting electrical energy to increase the output voltage and power of photovoltaic modules.<\/p>\n

Photovoltaic cells connected by photovoltaic ribbons are packaged into photovoltaic modules by EVA film, photovoltaic glass, backplane, frame and other materials, and then directly used in the construction of photovoltaic power generation systems. The quality of photovoltaic ribbons is related to the transmission efficiency and service life of photovoltaic modules. The performance indicators of photovoltaic silicon ribbons such as size, mechanical properties, surface structure, resistivity, etc. are important factors affecting photovoltaic power generation efficiency, the breakage rate of photovoltaic cells, and the long-term reliability and durability of photovoltaic modules.<\/p>\n

1- Working principle of photovoltaic silicon ribbon<\/p>\n

The manufacturing of photovoltaic modules is composed of photovoltaic strips and is in the middle of the industrial chain. The photovoltaic industry chain is mainly composed of silicon materials, silicon wafers, solar cells, photovoltaic modules, and photovoltaic application systems. The upstream of the industry chain is mainly silicon materials and silicon wafers; the midstream is mainly solar cells and photovoltaic modules; and the downstream is the photovoltaic application system.<\/p>\n

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2-Various types of photovoltaic panels and strips<\/p>\n

There are many types of photovoltaic ribbons to meet different characteristics. According to their application direction, they can be divided into interconnection ribbons and busbars. The interconnection ribbon is a tin-coated welding ribbon used to connect photovoltaic cells and collect and transmit photovoltaic cell current. It is connected to the front and rear grid lines of the cell, connecting the positive and negative electrodes of adjacent cells to form a series circuit, transferring the power of the cell to the electrical equipment, and also plays a role in heat dissipation and mechanical manufacturing.<\/p>\n

The sinker strip is a tinned solder strip used to connect the photovoltaic cell string and the junction box. It is used to transmit the photovoltaic cell string current. It connects many cell strings to achieve a complete current path. For traditional photovoltaic modules, the consumption ratio of the interconnection strip to the busbar is about 4:1; for multi-door modules, the consumption ratio of the interconnection strip to the busbar is about 5:1.<\/p>\n

According to the performance and application fields of photovoltaic strips, interconnecting strips mainly include conventional interconnecting strips, MBB strips, low-temperature strips, low-resistance strips, etc.; busbars mainly include conventional busbars, punching strips, black strips, curved strips, etc.<\/p>\n

3- Copper and tin raw materials account for a large proportion of the cost of solder strips<\/p>\n

The main raw materials of photovoltaic ribbons are copper and tin. They are composed of base materials and surface coatings. The base material is copper of different sizes, which requires precise specifications, good conductivity, and certain strength. The surface coating is a tin alloy, which can be evenly coated on the surface of the copper substrate in a certain composition ratio and thickness by special processes such as electroplating, vacuum deposition, spraying or hot dip plating. Since the copper substrate itself does not have good welding performance. The main function of the tin alloy layer is to make the tabulation line meet the weldability and firmly weld the photovoltaic ribbon to the main grid of the battery, so as to play a good current conduction role.<\/p>","protected":false},"excerpt":{"rendered":"

Photovoltaic welding ribbon, also known as tinned copper ribbon or solar pressure strip wire. It is an important component of photovoltaic modules and is used to connect photovoltaic cells in the package. It converts light into [\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":[253,243],"class_list":["post-5927","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-duxitongdai"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5927","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=5927"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5927\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=5927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=5927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=5927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}