S4R system charging auxiliary switching circuit for space and S4R system with the same

Abstract

The invention provides a S4R system charging auxiliary switching circuit for space and an S4R system with the same, and the circuit comprises: a charging logic execution circuit (1), a charging disconnection remote control instruction drive circuit (2), a charging connection remote control instruction drive circuit (3), and a charging power execution circuit (4). The charging disconnection remotecontrol instruction drive circuit (2) and the charging connection remote control instruction drive circuit (3) are respectively connected with the charging logic execution circuit (1) and the chargingpower execution circuit (4), and mutual switching between sequential switch shunt series adjustment S4R and sequential switch shunt adjustment S3R is realized. The circuit solves the problem of overcharge of the storage battery caused by short circuit of a charging power tube or constant high output of the charging control signal. On the premise that the switching function is achieved, the circuit is simple and cheap, the space environment reliability of the used components is high, and high pertinence and practicability are achieved for space circuit design.

Description

technical field [0001] The invention relates to aerospace power control technology, in particular to a charging auxiliary switching circuit for an S4R system used in space. Background technique [0002] Sequential switching shunt regulator (S3R, sequential switching shunt regulator) technology has been widely recognized and adopted as an important means of bus regulation in today's spacecraft power system. Compared with the linear shunt regulation technology, the sequential switch shunt regulation technology greatly reduces the power consumption, volume and weight of the shunt itself, and provides a practical way to reduce the difficulty of thermal design of the shunt regulator. [0003] On the basis of S3R technology, the power regulation technology of sequential switching shuntseries regulator (S4R, sequential switching shuntseries regulator) is to further unify the design of charging array and power supply array to provide power supply current and charging current for bus...

AI Technical Summary

Problems solved by technology

[0005] If the charging circuit in the sequential switch shunt series regulation (S4R) has a short-circuit of the charging power tube or a normal high output of the charging control signal, it will cause the battery to overcharge and cause the logic disorder of the charging shunt conversion of this circuit, which will affect the normal operation of the circuit. , and affect the bus voltage of the power control stand-alone

[0006] At present, the work of sequential switch shunt series regulation (S4R) in foreign countries is mainly to realize the logic between shunt control and charging control by controlling the switches of multiple MOS transistors. When the charging power tube is short-circuited or the charging control signal output is normally high in the series regulator (S4R), the fault is difficult to remove and will affect the normal use of the whole machine

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