Autonomous management system of satellite lithium-ion battery pack power supply subsystem

Abstract

The invention discloses an autonomous management system of a satellite lithium-ion battery pack power supply subsystem. The autonomous management system comprises an in-orbit management module, an emergency protection module, a balance control module and a lower computer module, wherein the in-orbit management module is used for preventing a lithium-ion battery pack from being excessively charged; the emergency protection module is used for preventing the lithium-ion battery pack from being excessively discharged; the balance control module is used for balancing the voltage among various single lithium-ion batteries in the lithium-ion battery pack; and the lower computer module is used for sampling and comparing the voltage of various single lithium-ion batteries in the lithium-ion battery pack. Through charging and discharging adjustment control on the battery pack and shunt adjustment of excessive power output by a solar cell array, transform control on the power supply subsystem is finished; the power supply stability of a busbar and various subsystems is kept; and the power supply and distribution requirements of load on the satellite are met. According to the autonomous management system, in-orbit full-autonomous control on the satellite lithium-ion battery pack power supply subsystem is achieved; and the reliability of the system is also greatly improved fundamentally.

Description

technical field [0001] The invention relates to the technical field of spacecraft power sub-system design, in particular to an autonomous management system for the power sub-system of a lithium-ion battery pack for satellites. Background technique [0002] The satellite power subsystem usually adopts the solar array-battery system and the power supply scheme of the adjustable DC bus system. During the service life, the power subsystem completes the uninterrupted power supply to the loads of each subsystem on the satellite, including long-term power and short-term power. In the light period, the solar cell array energy collection is completed, the solar energy is converted into electric energy, the load is supplied and the battery pack is charged. , supplemented by the battery. [0003] Satellite power sub-system control can be divided into two types: ground remote control and power sub-system autonomous control. However, the existing satellite power sub-system control usual...

AI Technical Summary

Problems solved by technology

[0003] Satellite power subsystem control can be divided into ground remote control and power subsystem autonomous control. However, the existing satellite power subsystem control usually has the defect of poor on-orbit reliability and cannot meet the power supply and distribution requirements of each load on the satellite.

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