Improved thermal management of solar cells through thermal transpiration

越来越多地使用太阳能，以帮助满足我们对低碳足迹的能源需求。目前，将太阳光直接转化为电能的光伏电池和组件的能量转换效率在18-20%之间。入射能量的一小部分被反射和发射的光所损失，而剩余的能量则转化为热量并消散到环境中。传统太阳能电池的效率随着温度的升高而降低，因此在标准操作条件下，改进的热管理可以显著提高电池效率。传统的太阳能模块在设计时并没有将热管理作为主要考虑因素，尽管确实会出现一些被动冷却。热降解是模块长期退化和失效的主要原因之一。通过更有针对性的热管理，可以提高模块的可靠性和效率，降低能源成本，并在系统层面增加整体能源产量。与SyENERGY集成能源解决方案公司合作，我们将研究热蒸腾的使用-空气通过电池和模块的孔-以改善电池的冷却。我们将检查孔的最佳尺寸和密度，以优化整体能源性能，使用建模技术和实验验证。太阳能电池的穿孔对电池性能和长期可靠性提出了新的技术挑战，需要加以解决。随着这些问题的解决，这些技术解决方案将被纳入SyENERGY在加拿大生产的新产品线，提供更低成本和更可靠的清洁能源。

The use of solar energy is increasingly being deployed to help meet our energy needs with a low carbon footprint. Photovoltaic cells and modules that convert sunlight directly to electricity currently achieve energy conversion efficiencies in the range of 18-20%. A small portion of the incoming energy is lost to reflected and emitted light, while the remaining energy is converted to heat and dissipated to the environment. The efficiency of conventional solar cells decreases with increasing temperature and consequently improved heat management can significantly increase cell efficiencies under standard operating conditions. Conventional solar modules are not designed with heat management as a major consideration, although some passive cooling does occur. Thermal degradation is one of the leading sources of long term module degradation and failure. By more intentional thermal management, module reliability and efficiency can both be improved, lowering energy costs and increasing the overall energy production at a system level. Working together with SyENERGY Integrated Energy Solutions, we will investigate the use of thermal transpiration - air passing through holes in the cells and modules - in order to improve the cell cooling. We will examine the optimal size and density of holes to optimize overall energy performance, using modeling techniques and experimental verification. Perforations in the solar cells raise new technical challenges regarding the cell performance and long term reliability which need to be addressed. As these questions are answered the technical solutions will be incorporated into a new product line for SyENERGY, produced in Canada, providing lower cost and more reliable clean energy.