Design and Implementation of Power Supply and Distribution System for Mars Landing Mission

Combined with the characteristics of Mars exploration mission, the functions, main indicators and system schemes of the power supply and distribution subsystem of China’s first Mars landing and rover mission are briefly introduced, and the design of high-specific energy lithium fluorocarbon batteries, the design of Mars solar spectrum-matched solar cells, the design of dust-proof coating, the design of MPPT, the estimation and management of on-orbit capacity, etc. are briefly introduced, and the design problems of power supply and distribution systems in the extreme environment of Mars landing and rover mission are proposed. The results of the on-orbit flight test show that the power supply and distribution system has normal function, reliable work and excellent performance, and the design scheme of the power supply and distribution system proposed for the landing and rover mission has successfully supported China’s first interplanetary exploration mission. Through the design and implementation of this project, a large amount of valuable experience and data have been accumulated, which provides a high scientific and engineering reference value for the design and verification of power supply and distribution systems for subsequent Mars sampling and return missions.