杭州首材在2024太阳能高效率技术会议上介绍了其BC组件封装解决方案。该公司认为，BC电池技术因其高发电能力和美观性，未来市场份额将增加。XBC可适应不同电池技术，正面无触点，背面需较厚封装层。杭州首材推荐POE和薄EPE膜用于XBC电池正面，具有优异的抗PID性能和高透光率。EP304薄共挤膜可满足抗PID要求，特殊高反射黑白膜F806WH可提高组件功率。针对HPBC、TBC和HBC电池，分别推荐不同的封装方案。此外，该公司还开发了新型绝缘油墨和黑色背板等产品。

💡杭州首材认为BC电池技术因高发电能力和美观性，未来市场份额将增长，XBC技术可适配多种电池技术。

🛡️针对XBC电池，杭州首材推荐使用POE和薄EPE膜作为正面封装，因其具有优异的抗PID性能和高透光率，同时，EP304薄共挤膜在与TOPCon电池结合时可满足抗PID要求。

🔆杭州首材推出的高反射黑白膜F806WH，黑色面朝向电池可提升美观度，白色面则反射红外光，从而提高组件功率，适用于玻璃-玻璃和玻璃-背板组件。

⚙️针对不同类型的BC电池，如HPBC、TBC和HBC，杭州首材分别推荐不同的封装方案，例如HPBC正面使用POE或EPE，背面使用EVA或白色EVA，HBC则需要高防水性和抗紫外线衰减的封装材料。

🧪杭州首材还开发了新型绝缘油墨，用于隔离BC电池的正负极触点，并提供黑色背板和覆盖线材的覆盖条等其他BC产品。

Hangzhou First Applied Material’s Overseas Sales Manager Bo Jin presented the company’s encapsulation solutions for BC modules on Day 4 of the 4-day TaiyangNews High Efficiency Solar Technologies 2024 Conference. The company sees the BC cell technology’s market share increasing in the coming years for its high-power generation and aesthetic appeal. XBC can also adapt to different cell technologies.In the BC cell structure, the front has no contacts, so a thinner encapsulant can be used. However, since both positive and negative contacts are placed, it needs to be covered with a thicker layer. A white or black film as an encapsulant at the back can also boost power generation.  Hangzhou First recommends its POE and thin EPE films for the front side of the XBC cell with their excellent anti-PID performance and high light transmittance. Its EP304 thin co-extrusion film can meet the anti-PID requirements with a POE layer of 110 g when combined with TOPCon cells. Since TBC cells have similar requirements, the EP304 can meet the same for this cell structure, added Jin.  A special high-reflective black-white film F806WH from Hangzhou First features high infrared light reflectivity. The black color on the cell side makes it look aesthetic, while the white color lends infrared reflection, boosting module power. The company recommends it both for glass-glass and glass-backsheet modules with BC cells.  In the case of an HPBC cell, Jin recommends using POE or EPE on the front and EVA or white EVA on the back. For a TBC cell that usually uses a dual-glass structure, POE or EPE can be used on the front as well as the back. The HBC, on the other hand, needs high water resistance and anti-UV attenuation because of which Jin recommends POE or EPE or EVA on the front, and POE or EPE at the back. Hangzhou First has also developed a new insulating ink to insulate the positive and negative contacts of BC cells. Other BC products in its portfolio include a black backsheet and a cover strip to cover the wires, among others.For more presentation videos and conference summaries for all 4 days of the TaiyangNews High Efficiency Solar Technologies 2024 Conference, click here for days 1 and 2, and here for days 3 and 4.