First application! Lithium fluorocarbon battery packs provide energy for Mars exploration | Mars exploration

On July 23, China successfully launched the "Tiann-1" Mars probe from the Wenchang launch base, which is the country's first Mars exploration mission.

Mars exploration is far away and complicated, which puts forward high requirements on power supply and other technologies. To this end, the 18 institutes of Lishen Group carefully developed lithium fluorocarbon battery packs, achieving the first application of lithium fluorocarbon batteries in deep space probes, and providing strong power for the successful landing of Mars probes on the surface of Mars.

According to technical experts, China's first Mars exploration project through a launch to complete the "around, patrol" three missions, Mars to carry out global, comprehensive circling exploration, on the surface of Mars to carry out regional patrol exploration. Among them, the landing process is the most difficult technology, and the reliability and stability of the power supply product is crucial.

The lithium fluorocarbon battery pack of the entry module is the key equipment of the landing rover and plays an important role in the landing mission. In this mission, China Electric Power for the first time used lithium fluorocarbon battery pack as the power supply for entering the cabin, which has an effective weight reduction compared with the lithium-ion battery pack scheme. At the same time, the project team has made great efforts to break through the three technical difficulties of high temperature long storage life, high current discharge control and mild high power discharge, to ensure that the function, performance, reliability and safety of the lithium fluorocarbon battery pack meet the mission requirements, and provide energy security for Mars exploration with scientific and technological innovation.

It took seven months for the probe to leave Earth orbit and capture Mars, and the ambient temperature changed greatly. In response to this situation, the research team achieved long-term storage of energy in orbit through process control.

During the process of the entry module crossing the Martian atmosphere, the environment continues to rise, and the power source of this process is a large current discharge mode, and the heating power is large. In order to further control the heating power of the power supply product, the development team has fully guaranteed the product safety through technical research.

The launch marks the first step in a mission to Mars. Supported by the power of electric energy, Mars exploration is full of energy, which will help human interstellar exploration further.