{"id":7255,"date":"2023-06-05T16:57:44","date_gmt":"2023-06-05T08:57:44","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=7255"},"modified":"2023-09-01T14:07:15","modified_gmt":"2023-09-01T06:07:15","slug":"alt1101","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/alt1101\/","title":{"rendered":"Analysis on the competitive status of China's photovoltaic welding ribbon industry from 2023 to 2028"},"content":{"rendered":"

Photovoltaic welding ribbon<\/a>yesSolar Photovoltaic<\/a>A sub-segment of the industry, it has the characteristics of "small industry, big market". my country's photovoltaic welding tape industry is relatively well developed, dominated by private enterprises, and the industry has a high degree of marketization. The distribution areas of photovoltaic welding tape enterprises match those of downstream photovoltaic module manufacturing enterprises. my country's photovoltaic welding tape enterprises are mainly concentrated in Jiangsu and Zhejiang.<\/p>\n

The upgrading of photovoltaic industry structure has become a future development trend, and the improvement of photovoltaic welding tape performance has also become a need for future development. Photovoltaic welding tape manufacturers with advanced production technology, strong production capacity, high degree of automation, and strong financial strength will find it easier to develop photovoltaic welding tape products that meet the requirements of market development trends, and their market share will be further improved, and the industry concentration will be further improved.<\/p>\n

(1) Basic situation of photovoltaic welding ribbon industry<\/p>\n

Photovoltaic welding ribbon, also known as tinned welding ribbon. Photovoltaic welding ribbon is an important component of photovoltaic modules and an electrical connector. It is used in the series or parallel connection of photovoltaic cells and plays an important role in the conduction of electricity to improve the output voltage and power of photovoltaic modules. Photovoltaic welding ribbon is an important material in the welding process of photovoltaic modules. Its quality directly affects the current collection efficiency of photovoltaic modules and has a great impact on the power of photovoltaic modules and the efficiency of photovoltaic power generation systems.<\/p>\n

The working principle of photovoltaic cells is the photovoltaic effect, that is, semiconductor materials (such as silicon wafers) will generate a potential difference under the action of light. This requires two conditions: (1) it can absorb sunlight and generate negative and positive charge carriers; (2) it uses the internal electric field to separate negative charge carriers (electrons) and positive charge carriers (holes). Common photovoltaic cells and their working principles are shown in the figure below:<\/p>\n

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Photovoltaic welding tape consists of a substrate and a surface coating: (1) The substrate is copper of different specifications, which requires precise specifications, good conductivity and certain strength; (2) The surface coating can be applied by special processes such as electroplating, vacuum deposition, spraying or hot-dip plating, and the coating materials such as tin alloy are evenly wrapped on the surface of the copper substrate according to a certain composition ratio and thickness. Since the copper substrate itself does not have good welding performance, the main function of the tin alloy layer is to make the photovoltaic tape meet the solderability requirements and firmly weld the photovoltaic tape to the main grid line of the battery, thereby playing a good current conduction role. The performance of the photovoltaic tape not only affects the current collection and conduction efficiency of the photovoltaic effect generated in the photovoltaic module, but also has a vital impact on the service life of the photovoltaic module.<\/p>\n

The cross section and working principle of the photovoltaic strip are shown in the figure below:<\/p>\n

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Photovoltaic cells connected by photovoltaic tape are packaged together with EVA film, photovoltaic glass, backboard and frame to form photovoltaic modules. Photovoltaic modules are directly used to build photovoltaic power generation systems, such as: using photovoltaic brackets to build large-scale ground photovoltaic power stations, or directly installed on the roof to form a household photovoltaic power station.<\/p>\n

(2) Current status of photovoltaic welding ribbon industry<\/p>\n

In recent years, with the development of the photovoltaic industry, the transition from 5BB welding ribbon to MBB welding ribbon has been completed. According to the China Photovoltaic Industry Association, in 2022, with the increase in the size of mainstream cells, 5 main grids will basically not be used for 182mm-sized cells, and 9 main grids and above will become the new market mainstream, of which 9BB technology market share is about 34%, 10BB technology market share is about 34.2%, and 11BB and above market share is about 31.8%. Without affecting the shading area of the cell and the series connection process, multi-grid cells have better stress distribution uniformity, resulting in lower fragmentation rate, better conductivity and higher power.<\/p>\n

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(3) Development trend of photovoltaic welding ribbon industry<\/p>\n

Photovoltaic welding ribbon is a key component of photovoltaic modules for electrical conductivity. It has an upstream and downstream relationship with photovoltaic modules. The overall demand of the photovoltaic welding ribbon industry depends on the newly installed capacity of photovoltaic and module production. In the future, with the rapid development of the global and Chinese photovoltaic industry, the installed capacity of photovoltaic modules will continue to grow rapidly, which will lead to a continuous increase in the demand for upstream photovoltaic welding ribbons.<\/p>\n

The trend of photovoltaic welding tape technology is iterating with the update of photovoltaic cell technology. From the development trend of the photovoltaic welding tape industry, the current technical direction of the industry is mainly focused on improving the mechanical properties of the welding tape, and optimizing the surface structure and appearance size of the welding tape, so as to reduce the resistivity of the welding tape, increase the total amount of light received by the battery, and thus improve the power of the photovoltaic module.<\/p>\n

The grid lines of the cell have evolved from the original 2BB-5BB to the current mainstream MBB, and the welding ribbons have also evolved from the original rolled tin-coated flat welding ribbons to the current round welding ribbons and special-shaped welding ribbons. At present, the mainstream photovoltaic welding ribbon products on the market are MBB welding ribbons for polycrystalline silicon modules, which are thinner and denser than traditional welding ribbons, which are conducive to reducing the shading of the cell and reducing the power loss of the cell.<\/p>\n

In the future, with the development of TOPCon technology, the demand for SMBB welding ribbons will gradually increase. It can shorten the current transmission distance, reduce grid line shading, improve light utilization, effectively reduce the series resistance of the component, and maximize the use of sunlight. At the same time, it has a higher tolerance for hidden cracks, broken grids, and ruptures in the cell, which can reduce the risk of component failure and improve the reliability of the component.<\/p>","protected":false},"excerpt":{"rendered":"

Photovoltaic welding ribbon is a sub-segment of the solar photovoltaic industry, with the characteristics of "small industry, big market". my country's photovoltaic welding ribbon [\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":[253,233],"class_list":["post-7255","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-guangfuchanye"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/7255","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=7255"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/7255\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=7255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=7255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=7255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}