High-reliability composite power supply system applied to Mars landing patrol task

Abstract

According to the high-reliability composite power supply system applied to the Mars landing patrol task provided by the invention, a high-specific-energy primary battery with the characteristics of low self-discharge rate, no maintenance, wide temperature adaptation range and the like is selected for an entering cabin power supply subsystem only needing short-time power supply, so that a charging path entering a cabin is saved, and the weight of the whole power supply system is reduced; for a Mars rover power supply subsystem needing long-time power supply, a rechargeable battery is selected, and the purposes of adapting to long-time storage and wide-temperature-range detection tasks and realizing power supply path multiplexing backup at the most critical EDL section are achieved by adopting different types of energy storage batteries and corresponding topological design. In other words, the backup power supply path can independently complete the EDL task and can match the main power supply path to complete the EDL task, and the system reliability is improved; therefore, the invention is particularly suitable for detectors which need to be subjected to long-term flight, can be stored for a long time, have relatively independent cabin tasks and have multiplexing requirements, such as Mars detection tasks and interplanetary detection tasks.

Description

technical field [0001] The invention belongs to the technical field of deep space exploration, and in particular relates to a highly reliable composite power supply system applied to Mars landing patrol missions. Background technique [0002] Multi-chamber combined spacecraft has been widely used in the fields of lunar exploration and manned spaceflight. The patent "A Combined Power Supply System and Method for Double-cabin Combined Spacecraft" provides a design of a dual-cabin combined spacecraft power supply system. method, but the traditional equipment is used for the single machine of the system, and the power supply mode of the two cabins is similar, and the optimized design is only made in the module multiplexing and other links. [0003] At the same time, traditional spacecraft often use zinc-silver batteries for short-term one-time missions. However, for Mars probes and interplanetary exploration missions, the power supply unit faces problems such as long-term storag...

AI Technical Summary

Problems solved by technology

[0002] Multi-chamber combined spacecraft has been widely used in the fields of lunar exploration and manned spaceflight. The patent "A Combined Power Supply System and Method for Double-cabin Combined Spacecraft" provides a design of a dual-cabin combined spacecraft power supply system. method, but the traditional equipment is used for the single machine of the system, and the power supply mode of the two cabins is similar, and the optimized design is only made in the link of module reuse.

[0003] At the same time, traditional spacecraft often use zinc-silver batteries for short-term one-time missions. However, for Mars probes and interplanetary exploration missions, the power supply unit faces problems such as long-term storage and wide temperature range use, so it is necessary to choose suitable for long-term storage. The single-unit power supply that can increase the energy efficiency of the system, zinc-silver batteries for short-term power supply are no longer applicable; secondly, if different types of battery packs are used for long-duration missions and short-duration missions of traditional multi-cabin spacecraft, most of them are independent power supply, which is not suitable for mixed use Or reuse; however, the mission of the two modules of the Mars rover is relatively independent, but there is a mission requirement for a combination of long-term and short-term power supply, the existing power supply mode is not suitable for the power supply of the two modules of the Mars rover; finally, When the detector is facing high-risk and highly complex EDL (entry, descent, landing) stage, human intervention cannot be performed, and the reliability, fault identification and isolation of the two-cabin power supply system become particularly important; in summary, the traditional power supply topology It is no longer suitable for the interplanetary exploration needs of high-reliability composite power supply missions

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