太阳电池是一种利用光生伏打效应将太阳能直接转变成电能的电源,无污染,无能源储存枯竭问题,已经得到世界各国的普遍重视。虽然目前成本较贵,但随着技术的进步逐年有明显的降低,使用范围越来越大。许多国家将其作为铁路无交流电地区通信信号的电源。我国也开始在这一领域使用,并取得了一些经验。今后的目标是降低成本,提高可靠性,研制配套蓄电池,逐步扩大使用范围。 Solar cells are a kind of power source that uses photovoltaic effect to convert solar energy directly into electrical energy. The pollution-free and energy-depletion-free storage problem has gained the universal attention of all countries in the world. Although the current cost is more expensive, but with the progress of technology has been significantly reduced year by year, the use of more and more. Many countries use it as a source of communication signals for areas without AC power lines. My country has also begun to use it in this area and has gained some experience. The future goal is to reduce costs, improve reliability, development of supporting batteries, and gradually expand the scope of use.