{"id":33485,"date":"2025-03-13T16:41:58","date_gmt":"2025-03-13T08:41:58","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=33485"},"modified":"2025-03-13T16:42:05","modified_gmt":"2025-03-13T08:42:05","slug":"photovoltaic-welding-ribbon-completely-replaces-pure-copper-ribbon","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/photovoltaic-welding-ribbon-completely-replaces-pure-copper-ribbon\/","title":{"rendered":"Photovoltaic welding ribbon completely replaces pure copper ribbon"},"content":{"rendered":"

The conductivity of copper-clad aluminum strip has always been a core issue of concern in the photovoltaic industry. Traditionally, aluminum has a conductivity that is only 62% IACS (International Annealed Copper Standard) of copper, so copper-clad aluminum strip has a disadvantage in conductivity. However,Raytron<\/a>\uff08Raytron<\/a>) Through technological breakthroughs, copper-clad aluminum strip not only solves the conductivity problem, but alsoPhotovoltaic welding ribbon<\/a>It has achieved the effect of completely replacing pure copper strip in the field.<\/p>

\ud83d\udd25 Why is Ruichuang's copper-clad aluminum strip so conductive?<\/p>

\u2705 1. High purity copper layer to ensure excellent conductivity<\/p>

Ruichuang uses high-purity oxygen-free copper as the surface material. The conductivity of the copper layer is as high as 98% IACS, which fully meets the requirements of photovoltaic welding ribbons for low resistance and high conductivity.<\/p>

\u2705 2. Precise control of copper layer thickness<\/p>

Ruichuang uses high-precision rolling technology to ensure that the copper layer thickness is above 0.03mm, effectively guaranteeing the current transmission path.<\/p>

Key point: The thicker the copper layer, the stronger the conductivity, while avoiding the problem of "too thin copper layer and too high resistance" in traditional copper-clad aluminum products.<\/p>

\u2705 3. Metallurgical diffusion is achieved on the copper-aluminum joint surface<\/p>

Ordinary copper-clad aluminum strips are prone to contact resistance due to their weak physical bonding.<\/p>

Ruichuang uses metallurgical diffusion bonding technology to form a tight alloy bonding layer between the copper layer and the aluminum core, achieving low-resistance lossless transmission, and the conductive performance is improved by more than 20% compared to traditional processes.<\/p>

\u2705 4. Surface tin plating to reduce contact resistance<\/p>

During photovoltaic welding, the surface tin plating layer can improve welding wettability, reduce cold solder joints, and further reduce resistance losses.<\/p>

\ud83d\udcc8 Actual conductivity performance data comparison<\/p>

During photovoltaic welding, the surface tin plating layer can improve welding wettability, reduce cold solder joints, and further reduce resistance losses.<\/p>

Comparison of actual conductivity performance data<\/h3>
Material<\/th>Electrical conductivity (IACS standard)<\/th>Resistivity (\u03a9\u00b7mm\u00b2\/m)<\/th><\/tr><\/thead>
Pure copper welding strip<\/td>103%<\/td>0.0172<\/td><\/tr>
Ruichuang copper clad aluminum welding strip<\/td>85%~90%<\/td>0.019~0.020<\/td><\/tr>
Ordinary copper clad aluminum welding strip<\/td>70%~75%<\/td>0.025~0.027<\/td><\/tr>
Pure aluminum welding strip<\/td>62%<\/td>0.028~0.0<\/td><\/tr><\/tbody><\/table><\/figure>

Photovoltaic module efficiency measurement<\/strong><\/h3>

The measured data show:<\/p>

Welded with Ruichuang copper clad aluminum stripPhotovoltaic modules<\/a>, power loss is less than 2W, fully meeting the requirements of high-efficiency TOPCon batteries, and has passed TUV certification and IEC61215 standards.<\/p>

Summary: Copper clad aluminum strip can completely replace pure copper strip<\/h3>
Advantages<\/th>Pure copper welding strip<\/th>Ruichuang copper clad aluminum welding strip<\/th><\/tr><\/thead>
Electrical conductivity<\/td>\u2605\u2605\u2605\u2605\u2605<\/td>\u2605\u2605\u2605\u2605\u2606<\/td><\/tr>
Thermal conductivity<\/td>\u2605\u2605\u2605\u2605\u2605<\/td>\u2605\u2605\u2605\u2605\u2606<\/td><\/tr>
Cost Control<\/td>\u2605\u2606\u2606\u2606\u2606<\/td>\u2605\u2605\u2605\u2605\u2605<\/td><\/tr>
weight<\/td>\u2605\u2606\u2606\u2606\u2606<\/td>\u2605\u2605\u2605\u2605\u2605<\/td><\/tr>
Anti-oxidation and corrosion resistance<\/td>\u2605\u2605\u2605\u2605\u2606<\/td>\u2605\u2605\u2605\u2605\u2605<\/td><\/tr><\/tbody><\/table><\/figure>

\ud83c\udf1e Why are more and more photovoltaic companies choosing Ruichuang copper-clad aluminum strip?<\/strong><\/h3>

\u2705 The conductivity reaches 85%~90%, meeting the requirements of photovoltaic welding ribbon
\u2705 Uniform copper layer thickness, improved resistance stability 20%
\u2705 Perfect replacement for pure copper strip, saving more costs than 30%
\u2705 Photovoltaic module efficiency increased by 2%~3%
\u2705 Has been widely used in high-efficiency components such as TOPCon and HJT<\/p>

<\/h3>","protected":false},"excerpt":{"rendered":"

The electrical conductivity of copper-clad aluminum strip has always been a core concern of the photovoltaic industry. Traditionally, aluminum has a conductivity of only 62% IACS (International Annealed Copper Standard) of copper.<\/p>","protected":false},"author":1,"featured_media":9053,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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":[],"class_list":["post-33485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/33485","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=33485"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/33485\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media\/9053"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=33485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=33485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=33485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}