一区二区高清无码电影_麻豆激情在线视频_国产一级黄片免费_2021最新国产在线人成

Copper clad aluminum strip is used forPhotovoltaic welding ribbonWhen the copper content is different,Conductivity, mechanical properties, durabilityas well asOverall stability of the photovoltaic systemThe increase or decrease of copper content will directly affect the copper clad aluminum strip.Electrical properties, welding quality and oxidation resistanceThe following are some possible effects of different copper contents in copper-clad aluminum strips:

1. Conductive properties

• High in copperCopper clad aluminum strip：Copper has a stronger conductivity than aluminum, so copper-clad aluminum strips with high copper content have better conductivity. For photovoltaic systems, high conductivity can ensure more efficient current transmission, reduce energy loss, and improvePhotovoltaic modulesoverall efficiency.
  • Copper clad aluminum strip with high copper content: Generally above 20%, the conductivity is close to that of pure copper material, but due to the presence of the aluminum core, it may still be slightly lower than that of pure copper welding strip.
• Copper clad aluminum strip with low copper content：Low copper content (e.g. below 10%) will increase resistance and affect the current transmission efficiency. When current passes through, more energy loss may occur, reducing the energy conversion efficiency of the photovoltaic system.

2. Welding performance

• Copper clad aluminum strip with high copper content：The copper layer is thicker and has better welding performance. When welding, the copper layer can better combine with the solder material, the welding point is more solid, and the resistance at the joint is lower.
  • Copper-clad aluminum strips with high copper content are suitable for photovoltaic systems that require higher welding reliability and longer service life, especially in high-load and high-temperature environments, to ensure the stability of welding joints.
• Copper clad aluminum strip with low copper content：The copper layer is thin, and uneven welding and loose joints may occur during welding, which will lead to increased resistance and even poor contact. Poor welding quality will lead to unstable system operation and affect the long-term performance of photovoltaic modules.

3. Antioxidant

• Copper clad aluminum strip with high copper content：The copper layer is thicker and has stronger anti-oxidation ability. Copper itself has excellent anti-oxidation performance. Copper-clad aluminum strip can effectively prevent the aluminum core from oxidizing in a humid or high temperature environment and maintain stable performance for a long time. Especially in photovoltaic systems, when exposed to the outdoors for a long time, strong anti-oxidation can help extend the service life of photovoltaic modules.
• Copper clad aluminum strip with low copper content：The copper layer is thin and easily affected by the external environment, especially in harsh environments such as high humidity and high temperature, and is prone to oxidation. The oxidation of aluminum will increase resistance and affect current transmission. In severe cases, it may also cause poor electrical contact and even cause safety hazards such as fire.

  

4. Mechanical properties

• Copper clad aluminum strip with high copper content：Copper has stronger mechanical properties than aluminum, and copper-clad aluminum strip has better overall mechanical strength. Copper-clad aluminum strip with high copper content can withstand greater tensile force and mechanical stress, and is suitable for application scenarios that need to withstand higher loads and vibrations. For photovoltaic modules, this helps maintain the stability of the welded joints and reduce weld fractures or poor contact caused by mechanical stress.
• Copper clad aluminum strip with low copper content：The copper layer is thin and the overall mechanical strength is low, which may cause breakage or damage under bending, stretching or external force, affecting the long-term stability of the photovoltaic system. In particular, during long-term use, the copper layer of the copper-clad aluminum strip may fall off due to external pressure, thereby exposing the aluminum core and increasing the risk of oxidation.

5. Cost and performance

• Copper clad aluminum strip with high copper content：The material cost of copper-clad aluminum strip with high copper content is higher, so for enterprises with high requirements for large-scale production and cost control, the copper content of copper-clad aluminum strip may need to be balanced between cost and performance. Copper-clad aluminum strip with higher copper content provides better conductivity and stability, but its cost also increases.
• Copper clad aluminum strip with low copper content：Copper-clad aluminum strips with low copper content have low cost, so they may be widely used in cost-sensitive markets. For some low-load, short-term photovoltaic systems, copper-clad aluminum strips with low copper content may be an economical choice, but their electrical performance and stability are relatively poor.

6. Long-term stability

• Copper clad aluminum strip with high copper content：Due to its good conductivity and oxidation resistance, copper-clad aluminum strips with a high copper content can maintain stability for a long time in high temperature and humid environments, reducing maintenance frequency and failure risks. For photovoltaic systems that require long-term stable operation, copper-clad aluminum strips with a high copper content are a more ideal choice.
• Copper clad aluminum strip with low copper content：Copper-clad aluminum strips with low copper content may be more susceptible to environmental factors, which may lead to a decrease in electrical performance after long-term use, thereby affecting the stability and efficiency of the photovoltaic system.

7. Thermal stability

• Copper clad aluminum strip with high copper content：High copper content helps to improve the thermal stability of copper-clad aluminum strip, especially in high temperature working environment, and can better withstand the thermal expansion pressure caused by temperature changes.
• Copper clad aluminum strip with low copper content: Low copper content may lead to poor thermal stability. Prolonged exposure to high temperature may cause the copper layer to fall off or oxidize, further affecting the performance and service life of photovoltaic modules.

Summarize:

• High copper content copper clad aluminum strip(Usually the copper content is 20% or higher) It has better conductivity, oxidation resistance, welding performance and stability, and is suitable for photovoltaic systems with high efficiency and high reliability requirements, especially in application scenarios that require long-term stable operation.
• Low copper content copper clad aluminum strip(Copper content less than 10%) generally has a lower cost, but its electrical properties, oxidation resistance and mechanical strength are poor. It may be suitable for low-load or short-term applications, but is not suitable for high-efficiency and long-life photovoltaic systems.

Therefore, there is a trade-off when choosing copper-clad aluminum stripCost and performanceThe appropriate level of copper content is determined based on specific application requirements (such as conductivity, welding quality, environmental tolerance, etc.).