{"id":5500,"date":"2023-03-27T16:19:43","date_gmt":"2023-03-27T08:19:43","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=5500"},"modified":"2023-09-01T13:45:18","modified_gmt":"2023-09-01T05:45:18","slug":"ele5318","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele5318\/","title":{"rendered":"List of auxiliary materials for photovoltaic modules"},"content":{"rendered":"

At present, common component auxiliary materials includePhotovoltaic busbar<\/a>, photovoltaic interconnection strips. There are 8 kinds of auxiliary materials, including photovoltaic busbars, photovoltaic interconnectors, tempered glass, adhesive films, back sheets, aluminum alloys, silicone and junction boxes.<\/p>\n

From the cost perspective, the five most expensive auxiliary materials are frame, glass, film, backplane and solder strip. The frame has the highest proportion of non-silicon cost. Glass, film and backplane arePhotovoltaic modules<\/a>The core auxiliary materials of the equipment have an important influence on the final performance of the equipment. In the next section, we will explain these auxiliary materials and their development trends.<\/p>\n

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As the name implies, the frame is the outer frame of the photovoltaic module. After encapsulation, it is filled with a silicone seal to fix and protect the edges. At present, the most common photovoltaic module frame is an aluminum frame. Its cost is second only to the battery among all types of modules. It is the most expensive non-silicon auxiliary material.<\/p>\n

The production threshold of aluminum frames is low, there are many suppliers, and the competition is very fierce.<\/p>\n

2. Glass<\/p>\n

Photovoltaic glass is generally used as the encapsulation panel of photovoltaic modules. Glass is in direct contact with the external environment. Its weather resistance, strength, light transmittance and other indicators play a core role in the service life and long-term power generation efficiency of photovoltaic modules.<\/p>\n

At present, photovoltaic glass mainly has three product forms:
\n\u2460Ultra-clear patterned glass
\n\u2461Ultra-clear processed float glass
\n\u2462 Transparent Conductive Oxide Coated (TCO) Glass<\/p>\n

The development of photovoltaic glass is mainly driven by upstream and downstream. The current main trends are increasing and thinning respectively.<\/p>\n

The increase is mainly due to the influence of upstream. As the size of silicon wafers gradually increases, the glass panels used as packaging panels must also increase synchronously to meet the needs of upstream.<\/p>\n

Thinning: First, it is necessary to reduce costs, and second, it is also related to the design of photovoltaic modules. At present, some bifacial modules take the double glass route, with both sides encapsulated by glass. Both the front and back sides use 2.5\/2.0 mm thick glass instead of the traditional 3.2 mm. This is both to reduce the overall weight of the equipment and for cost considerations. Considering the continued growth in the penetration rate of bifacial modules, the thinning of photovoltaic glass will continue in the future.<\/p>\n

3. Adhesive film
\nThe encapsulation film is generally made of organic polymer resin. The film is in direct contact with the battery in the module and covers the upper and lower sides of the battery. It can protect the battery from water vapor and ultraviolet rays.<\/p>\n

There are three main types of adhesive films on the market:
\n\u2460Transparent EVA film
\n\u2461White EVA film
\n\u2462POE film<\/p>\n

The development of encapsulation film is also affected by the design of downstream photovoltaic modules. Although these two EVA films are still mainstream, the total market share is close to 80%. However, its performance gradually lags behind downstream demand and cannot solve the PID problem well. Therefore, it is not suitable for application in bifacial modules and is giving up market share.<\/p>\n

The PID effect is also known as potential induced degradation. It refers to the phenomenon that under the action of high voltage, ion migration occurs between the packaging material of the component and its upper and lower surface materials, and between the cell and its grounded metal frame, resulting in a decrease in component performance. This has a great negative impact on the service life and conversion efficiency of photovoltaic cells.<\/p>\n

In contrast, the barrier properties of POE film are much better. It is particularly suitable for application in technology routes that are sensitive to water vapor, which is one of the culprits of the PID effect. Therefore, as downstream demand changes, POE film is considered to be an upgraded alternative to EVA materials. Its penetration rate has increased rapidly, and its market share has reached 25.5% in 2020, and it is expected to increase further in the future.<\/p>\n

4. Back panel<\/p>\n

The back panel is locatedSolar panels<\/a>The outermost layer on the back. It protects the components from the external environment and acts as a wind and rainproof insulation. Therefore, it needs to have high resistance to high and low temperatures, resistance to ultraviolet radiation, resistance to environmental aging, water vapor barrier, electrical insulation and other properties.<\/p>\n

At present, the photovoltaic backplane products on the market are extremely mixed and lack a unified naming standard. The industry usually divides them into two categories based on whether they contain fluorine or not, and further subdivides them based on the processing technology. In order to reduce the reading burden of readers, we will not explain the different processes in detail here.<\/p>\n

With the rapid growth of the bifacial module market, glass backplanes and transparent organic material backplanes are included in the production scope due to their light transmittance, and their market share is also rising rapidly.<\/p>\n

5. PV RIBBON<\/p>\n

PV-Band is also known as verzinntes Kupferband. It refers to a copper band with a uniform thickness of tin-based solder coated on the surface. It is used to connect the cells of photovoltaic modules and plays the role of conducting electricity and gathering energy.<\/p>\n

The Das PV belt market is fully competitive with almost no bargaining power.<\/p>\n

PV-Band is an important raw material in the welding process of photovoltaic modules. The quality of PV band will directly affect the current collection efficiency of photovoltaic modules. It also has a great impact on the power of photovoltaic modules.<\/p>","protected":false},"excerpt":{"rendered":"

At present, common auxiliary materials for components include photovoltaic busbars and photovoltaic interconnectors. There are 8 kinds of auxiliary materials, including photovoltaic busbars, photovoltaic interconnectors, tempered glass, adhesive film, backplane, aluminum alloy, silicone and junction box.<\/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":[253,232],"class_list":["post-5500","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-guangfuzujian"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5500","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=5500"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5500\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=5500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=5500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=5500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}