In recent years, research and development of wireless charging technology has been favored by many high-tech companies in the world, and relevant research results have also been seen in the media, but real technical breakthroughs have not yet been realized. According to the “Russia Today†International News Agency, researchers from the Russian rocket aerospace “Energy†Company successfully used the laser beam to achieve wireless charging for mobile phones at a distance of 1.5 kilometers, and achieved great progress in long-distance wireless transmission technologies. The scientists of the Russian “Energy†company said that in the above experiment, the laser device was placed on the sixth floor of a building outside Moscow and a laser receiver with a diameter of 10 cm was installed on the top of another building. With a special device to convert laser energy into electrical energy, this special device is connected to a mobile phone charger. In the experiment, the wireless charging distance reached 1.5 kilometers, and the efficiency of wireless charging is being calculated. The researchers also said that the ultimate goal of the experiment was not to charge mobile phones, but to wirelessly charge various types of spacecraft in space, for example, to charge Russia’s Progress’s cargo spacecraft on the International Space Station. The distance between 1000 meters and 2000 meters. In the next step, the researchers will conduct tests on small unmanned aerial vehicles and one year later on the International Space Station. The researchers pointed out that the above wireless charging technology can also be used to charge satellites in space orbit to extend the service life of satellites. The efficiency of current photoelectric converters has reached 60%. Therefore, it is very effective to use laser devices to transfer electric energy from one spacecraft to another. Now, microsatellite technology has developed rapidly and the market is growing rapidly. Long-distance wireless charging technology will open up new directions for space research. In addition, not only low-power appliances, but also common household appliances, medical equipment, power tools, office appliances, and kitchen appliances can be wirelessly charged in the future. (Reporter Dong Yingying) Shandong Zhongshan Photoelectric Materials Co., Ltd , https://www.chzsem.com