{"id":33499,"date":"2025-03-18T17:09:39","date_gmt":"2025-03-18T09:09:39","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=33499"},"modified":"2025-03-18T17:09:46","modified_gmt":"2025-03-18T09:09:46","slug":"analysis-of-the-impact-of-copper-clad-aluminum-strip-replacing-pure-copper-substrate-as-photovoltaic-welding-strip","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/analysis-of-the-impact-of-copper-clad-aluminum-strip-replacing-pure-copper-substrate-as-photovoltaic-welding-strip\/","title":{"rendered":"Analysis of the impact of copper-clad aluminum strip replacing pure copper substrate as photovoltaic welding strip"},"content":{"rendered":"<p>As the photovoltaic industry<strong>Reduce costs and increase efficiency<\/strong>The continued demand<strong><a href=\"https:\/\/www.ray-tron.com\/en\/tongbaolvdai\/\" data-internallinksmanager029f6b8e52c=\"178\" title=\"Copper clad aluminum strip manufacturer_Copper clad aluminum wire supplier_Copper clad aluminum strip wholesaler manufacturer\">Copper clad aluminum strip<\/a>(CCA belt) is gradually becoming<a href=\"https:\/\/www.ray-tron.com\/en\/pvribbon\/\" data-internallinksmanager029f6b8e52c=\"43\" title=\"Photovoltaic welding ribbon\">Photovoltaic welding ribbon<\/a>The preferred alternative material, compared with the traditional pure copper welding strip, copper clad aluminum welding strip has advantages in cost, weight and conductivity.<\/strong>However, the use of copper-clad aluminum strips instead of pure copper strips as photovoltaic welding strips also brings some technical challenges and potential impacts.<\/p><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>1\ufe0f\u20e3 Cost reduction: Significantly reduce material costs<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Material cost advantage<\/strong><\/h3><ul class=\"wp-block-list\"><li>The price of aluminum is only<strong>1\/3-1\/4<\/strong>, the use of copper-clad aluminum strip can effectively reduce the raw material cost of photovoltaic welding strips<\/li>\n\n<li><strong>The cost of copper-clad aluminum welding strip is about 20%-30% lower than that of pure copper welding strip<\/strong>, significantly reducing the overall production costs of component manufacturers<\/li><\/ul><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Capacity Optimization<\/strong><\/h3><ul class=\"wp-block-list\"><li>Since the specific gravity of aluminum is only<strong>1\/3<\/strong>, copper clad aluminum strip is lighter and can be used at the same weight<strong>Produced 2.5 times the length<\/strong>, improve production efficiency<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>2\ufe0f\u20e3 Lightweight: Reduce component weight for easier transportation and installation<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Weight reduction<\/strong><\/h3><ul class=\"wp-block-list\"><li>The density of aluminum is about 2.7g\/cm\u00b3, while that of copper is 8.9g\/cm\u00b3.<strong>The weight of copper-clad aluminum welding strip is reduced by about 40%-50%<\/strong>, reduce<a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"14\" title=\"Photovoltaic modules\">Photovoltaic modules<\/a>Overall weight<\/li>\n\n<li>Lighter components can reduce<strong>Transportation, installation and maintenance<\/strong>The difficulty of installation and the load-bearing burden of the installation structure are reduced.<\/li><\/ul><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Applicable to large photovoltaic power stations<\/strong><\/h3><ul class=\"wp-block-list\"><li>Lightweight photovoltaic modules<strong>Ground power station, rooftop photovoltaic system<\/strong>It has more advantages, reduces the burden on the roof and extends the life of the system<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>3\ufe0f\u20e3 Conductive performance: performance optimization to meet photovoltaic needs<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>High conductivity<\/strong><\/h3><ul class=\"wp-block-list\"><li>Although the electrical conductivity of aluminum (about 61% IACS) is lower than that of copper (100% IACS),<strong>Optimize copper layer thickness and composite process<\/strong>, copper clad aluminum strip can<strong>Maintain good electrical conductivity<\/strong><\/li>\n\n<li><strong><a href=\"https:\/\/www.ray-tron.com\/en\/\" data-internallinksmanager029f6b8e52c=\"19\" title=\"Ruichuang 2\">Raytron<\/a>Copper clad aluminum strip<\/strong>Through precise rolling process, the thickness of copper layer is controlled to be **\u22650.03mm**, and the bonding degree is achieved<strong>100%<\/strong>, effectively improving the overall conductivity<\/li><\/ul><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Current carrying capacity<\/strong><\/h3><ul class=\"wp-block-list\"><li>After a special composite process, the copper-clad aluminum welding strip<strong>Current carrying capacity, power output stability<\/strong>Excellent performance in other aspects, with little difference from pure copper welding strip<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>4\ufe0f\u20e3 Impact of thermal expansion: Optimization of thermal expansion coefficient matching<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Difference in expansion coefficient<\/strong><\/h3><ul class=\"wp-block-list\"><li>The thermal expansion coefficient of copper is approximately<strong>16.5\u00d710\u207b\u2076\/\u00b0C<\/strong>, and the thermal expansion coefficient of aluminum is<strong>23\u00d710\u207b\u2076\/\u00b0C<\/strong>There are some differences between the two<\/li>\n\n<li>Because copper-clad aluminum materials<strong>The expansion coefficients of the copper layer and the aluminum core are different<\/strong>, in an environment with large temperature changes, micro cracks or delamination may occur<\/li><\/ul><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Solution<\/strong><\/h3><ul class=\"wp-block-list\"><li><strong>Ruichuang adopts advanced annealing composite technology<\/strong>By optimizing the copper-aluminum bonding strength and adjusting the composite parameters, the risk of delamination caused by thermal expansion stress is greatly reduced.<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>5\ufe0f\u20e3 Anti-corrosion performance: improved environmental adaptability<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Corrosion Risks of Aluminum<\/strong><\/h3><ul class=\"wp-block-list\"><li>Aluminum is susceptible to oxidation corrosion in humid, acidic and alkaline environments, but it can be<strong>Pure copper cladding protection<\/strong>, can effectively prevent aluminum core corrosion<\/li>\n\n<li><strong>Ruichuang&#039;s copper clad aluminum welding strip<\/strong>High-quality hot-dip tinning process is used to form a uniform tin layer outside the copper layer, further improving the anti-oxidation and anti-corrosion performance<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>6\ufe0f\u20e3 Mechanical strength: Optimized flexibility and tensile strength<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Difference in mechanical strength<\/strong><\/h3><ul class=\"wp-block-list\"><li>The mechanical strength of aluminum is lower than that of copper, and copper-clad aluminum strip is relatively weak in tensile strength and bending resistance.<\/li>\n\n<li>go through<strong>Multi-pass cold rolling composite treatment<\/strong>The copper-clad aluminum strip has improved tensile strength and flexibility, and its bending performance is closer to that of pure copper welding strip.<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\"><strong>7\ufe0f\u20e3 Welding performance: process improvement eliminates potential risks<\/strong><\/h2><h3 class=\"wp-block-heading\">\ud83c\udfaf <strong>Welding Difficulties<\/strong><\/h3><ul class=\"wp-block-list\"><li>Copper clad aluminum welding strip is prone to<strong>Tin layer peeling, loose bonding, cold soldering<\/strong>Such phenomena affect the long-term stability of photovoltaic modules.<\/li>\n\n<li><strong>Ruichuang precisely controls the welding temperature and welding time<\/strong>, optimize the tin layer thickness, solve the welding stability problem, and ensure the welding quality<\/li><\/ul><hr class=\"wp-block-separator has-alpha-channel-opacity\"\/><h2 class=\"wp-block-heading\">\ud83d\udd25 <strong>Summary: The impact of copper-clad aluminum strip replacing pure copper welding strip<\/strong><\/h2><p>\u2705 <strong>Cost reduction:<\/strong> Reduce the material cost of 20%-30% and improve the cost performance<br>\u2705 <strong>Weight reduction:<\/strong> Reduce the weight of 40%-50%, reduce transportation and installation costs<br>\u2705 <strong>Optimized electrical conductivity:<\/strong> The thickness of the copper layer is stably controlled, and the conductivity is similar to that of pure copper<br>\u2705 <strong>Thermal expansion optimization:<\/strong> Annealing composite technology reduces thermal expansion stress and prevents delamination<br>\u2705 <strong>Improved corrosion resistance:<\/strong> Hot-dip tinning protection to improve environmental adaptability<br>\u2705 <strong>Stable welding performance:<\/strong> Solve the problem of incomplete welding and improve the long-term reliability of components<\/p>","protected":false},"excerpt":{"rendered":"<p>With the continuous demand of photovoltaic industry for cost reduction and efficiency improvement, copper clad aluminum strip (CCA strip) is gradually becoming the preferred alternative material for photovoltaic welding strip. Compared with traditional pure copper welding strip, [\u2026]<\/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-33499","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\/33499","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=33499"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/33499\/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=33499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=33499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=33499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}