Cubesat integrated power supply system

Abstract

The invention discloses a cubesat integrated power supply system comprising a solar cell array, an energy management unit, a voltage stabilization unit, a power distribution unit, a MCU controller, anenergy storage cell unit, a separation switch circuit, and a general electric interface unit; compared with the prior art, the MPPT function is integrated to the solar energy transition unit; a separation trigger power-up unit is fused in the power supply system; the electric interface employs a general standard PC104 slot; a low power single-chip microcomputer can gather and detect system states, and can realize information interaction with a spaceborne computer, thus optimizing the power supply system integral functions, and improving the system energy transition efficiency and reliability.

Description

technical field [0001] The invention relates to a satellite power supply system, in particular to a CubeSat integrated power supply system. Background technique [0002] Cube micro-nano-satellite (referred to as "CubeSat") is a kind of micro-satellite with international general standards. The volume of 1U cube star is 10×10×10cm, and it can be expanded to 2U, 3U or even tens of U on this basis. Standardization, modularization, low cost, and rapid integration and deployment are important features of CubeSat. The power system is one of the key subsystems of CubeSat, which is responsible for the collection, conversion and distribution of satellite energy, and supplies power to other subsystems and payloads of the satellite. [0003] refer to figure 1 , the Chinese patent with publication number CN103414236A proposes a low-power MCU-based pico satellite power system, including solar cells, battery management units, DC-DC boost modules, LDO voltage regulators and low-power MCU...

AI Technical Summary

Problems solved by technology

This invention improves the integration of the micro-nano satellite power supply system, but it has the following disadvantages: (1) the maximum power point tracking (MPPT) technology is not used for the conversion of the solar cell voltage, resulting in the solar power conversion efficiency in the entire life cycle Low; (2) There is no satellite separation trigger power-on circuit, which causes the energy storage battery to be in a working state once it is connected to the system, which reduces the reliability of satellite transportation, launch and separation, and is also not conducive to the life of the battery; ( 3) It is not designed according to the size and electrical interface standard of CubeSat, which weakens the ability of rapid integration, testing and deployment of the system

These deficiencies are also the main shortcomings of the existing micro-nano satellite power system. At the same time, there is no on-board power system specially suitable for the general cube star standard in China.

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