Shandong Zhongshan Photoelectric Materials Co., Ltd
zshcchem@126.com
+86-0533-5680963
On July 23, my country successfully launched the "Tianwen-1" Mars probe at the Wenchang launch base. This was my country's first Mars exploration mission. The long-distance exploration of Mars and the complicated conditions place high demands on technologies such as power sources. For this reason, the 18th Research Institute of Lishen Group has meticulously developed a lithium fluorocarbon battery pack and realized the first application of lithium fluorocarbon battery on a deep space probe, providing strong power for the Mars probe to successfully land on the surface of Mars. According to technical experts, China's first Mars exploration project completed three missions of "orbiting, landing, and patrolling" through a single launch, carrying out global and comprehensive circumnavigation exploration of Mars, and carrying out regional patrol exploration on the surface of Mars. Among them, the landing process is the most technically difficult, and the reliability and stability of the power supply products are essential. The access cabin lithium fluorocarbon battery pack is the key equipment of the landing patrol device and plays an important role in the landing mission. In this mission, China Electric Power Division used lithium fluorocarbon battery packs as the power source for entering the cabin for the first time, which has effectively reduced weight compared with the lithium-ion battery pack solution. At the same time, the project team focused on breaking through the three major technical difficulties of high temperature and long storage life, temperature control under high current discharge, and high power discharge, to ensure that the function, performance, reliability and safety of the lithium fluorocarbon battery pack meet the mission requirements, and use technological innovation Provide energy guarantee for Mars exploration. It took up to 7 months for the probe to transfer from the Earth`s orbit to the capture of Mars and ground fire. The environmental temperature has changed tremendously. In response to this situation, the development team achieved long-term energy storage in orbit through process control. During the process of entering the capsule and traversing the Martian atmosphere, the environment continues to rise. In this process, the power supply is in the high-current discharge mode, and the heating power is large. In order to further control the heating power of power products, the development team has fully ensured product safety through technical research. The launch of the probe has taken the first step in a Mars exploration mission. With the power support of electric energy, Mars exploration energy is full, which will help human interstellar exploration to go further.
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