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A satellite on-orbit autonomous management method based on the application of lithium-ion batteries

A self-management and storage battery technology, which is applied in battery load switching, battery circuit devices, collectors, etc., can solve the problems of undischargeable final voltage drop, satellite failure, and unirradiated power generation, etc., to achieve extended service life and refined management , the effect of restoring power supply

Active Publication Date: 2019-01-25
AEROSPACE DONGFANGHONG SATELLITE
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

There are three problems with this design: (1) It is impossible to give an early warning of the drop in discharge terminal voltage caused by the normal decline of the battery pack. Voltage threshold, the satellite enters the minimum power consumption mode, which affects the payload's execution of tasks; (2) Hierarchical management cannot be carried out for the low voltage of the battery pack. (3) If the battery pack is over-discharged due to a certain satellite failure, the battery pack is disconnected from the satellite power supply bus, and the satellite is powered off during the shadow time. , due to the unknown attitude of the satellite, the normal line of the solar cell array may be perpendicular to the sunlight when entering the light time, so that it cannot be illuminated to generate electricity, resulting in the failure of the satellite

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  • A satellite on-orbit autonomous management method based on the application of lithium-ion batteries
  • A satellite on-orbit autonomous management method based on the application of lithium-ion batteries
  • A satellite on-orbit autonomous management method based on the application of lithium-ion batteries

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Embodiment Construction

[0032] The basic thought of the present invention is: firstly design 5 kinds of modes including battery pack voltage low warning mode, each mode corresponds to the battery pack voltage under different hazard levels and the different recoverable autonomous emergency states of the satellite; then according to the satellite The charging and discharging current of the on-orbit battery pack determines the charging and discharging system of the full capacity test of the battery pack, and obtains the discharge voltage curve of the full capacity test; according to the different states of the satellites corresponding to the five modes, determine the selection principle of the voltage threshold of the battery pack; The voltage thresholds in various modes are selected according to the discharge voltage curve and the voltage threshold selection principle. According to the performance degradation of the battery pack, the voltage threshold in each mode is adjusted as the life of the satellit...

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Abstract

The invention relates to a lithium ion storage battery application-based satellite in-orbit autonomous management method. According to the method, a storage battery pack voltage excessively-low early-warning mode, and four safety protection modes, namely a current task termination module, a lowest power consumption module, a sun pointing module and a storage battery pack overdischarge protection mode, are provided; on the basis of corresponding to the voltage of the storage battery pack under different damage degrees and different restorable autonomous emergency states of the satellite, fine classification autonomous management of storage battery pack voltage excessively-low damage is realized, and the service life of the storage battery pack is prolonged.

Description

technical field [0001] The invention relates to a satellite on-orbit autonomous management method based on the application of lithium-ion batteries, and belongs to the fields of satellite energy security mode design and on-orbit autonomous management. Background technique [0002] Satellites are generally composed of two parts: platform and payload. The satellite payload refers to the subsystems that perform satellite tasks. The satellite platform refers to the service systems that support the payload to complete the task and ensure the normal operation of the satellite. Under normal circumstances, each subsystem of the satellite platform is a device that is always powered on, and the power failure of some equipment will affect the normal operation of the satellite; the payload is a short-term power-on device. Normal power failure has no impact on the normal operation of the satellite and subsequent mission execution. [0003] At present, the power supply system of satellit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H04B7/185
CPCH02J7/00H02J7/0068H04B7/18519H04B7/18573Y02D30/70
Inventor 张勇鄢婉娟刘元默马文伟苏蛟
Owner AEROSPACE DONGFANGHONG SATELLITE