{"id":33450,"date":"2025-03-05T16:41:40","date_gmt":"2025-03-05T08:41:40","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=33450"},"modified":"2025-03-05T16:41:46","modified_gmt":"2025-03-05T08:41:46","slug":"issues-that-need-to-be-paid-attention-to-when-copper-clad-aluminum-strips-are-used-to-replace-traditional-welding-strips","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/issues-that-need-to-be-paid-attention-to-when-copper-clad-aluminum-strips-are-used-to-replace-traditional-welding-strips\/","title":{"rendered":"Issues that need to be paid attention to when copper-clad aluminum strips are used to replace traditional welding strips"},"content":{"rendered":"
When using copper-clad aluminum ribbon to replace traditional welding ribbon, in order to ensure the long-term stability and safety of the photovoltaic system, it is necessary to pay attention to and prevent risks from the following aspects:<\/p>\n\n\n\n
Conductivity: Ensure that the copper layer thickness and uniformity of the copper-clad aluminum strip meet the design requirements to ensure that its conductivity is close to that of pure copper welding strip. Detailed resistance and conductivity testing should be carried out to ensure that there will be no large voltage drop under high current load.<\/p>\n\n\n\n
Mechanical strength: Since the mechanical properties of aluminum are lower than those of copper, special attention should be paid to the bonding strength between the copper layer and the aluminum core to ensure that the solder ribbon will not break or delaminate when subjected to temperature changes, stretching and vibration.<\/p>\n\n\n\n
Welding process: The welding performance of copper-clad aluminum strip is different from that of pure copper, so a more adaptable welding process is required, including adjusting the welding temperature, pressure, and welding materials (flux, solder, etc.) to ensure that the solder joints are firm and in good contact.<\/p>\n\n\n\n
Process parameter control: During the production and use process, strictly control the process parameters to ensure product consistency and avoid risks caused by too thin copper layer or poor bonding.<\/p>\n\n\n\n
Surface protection: Consider adding a protective coating (such as tin plating, silver plating or other anti-oxidation treatment) on the surface of the copper-clad aluminum strip to prevent the outer copper from oxidizing due to long-term exposure to the environment, thereby protecting the aluminum core from being affected.<\/p>\n\n\n\n
Environmental testing: Before actual application, corrosion resistance and oxidation resistance tests are carried out to ensure that the solder strip can maintain stable performance in the expected use environment (high humidity, salt spray, chemical corrosion, etc.).<\/p>\n\n\n\n