A battery discharge regulator output overvoltage protection circuit

Abstract

The invention discloses an output overvoltage protection circuit for a storage battery discharge regulator, and aims to solve the problem that it is difficult to position a fault module and perform protection in an output overvoltage state by the storage battery discharge regulator which consists of multiple shunt-wound, mutually-independent and totally-consistent storage battery discharge regulation modules. Instead, the output overvoltage protection circuit provided by the invention can realize output overvoltage protection on the storage battery discharge regulator by fault positioning through a step of determining the output current of each shunt-wound storage battery discharge regulation module in the output overvoltage condition. According to the method, the output overvoltage protection circuit adopts a resistor, a capacitor, an integrated operational amplifier and other conventional components, and the functions of fault positioning, overvoltage protection, state locking and unlocking and the like are realized; meanwhile, the circuit is simple and creative, wide in adaptability, small in scale, low in complexity, low in implementation cost and high in reliability; in addition, the signals needed to be processed are simple; the circuit can be reused with other protection circuits; and a digital logic device and a digital storage chip are not required.

Description

technical field [0001] The invention relates to an output overvoltage protection circuit of a storage battery discharge regulator, which is especially suitable for the output overvoltage protection of a storage battery discharge regulator group used in aerospace. Background technique [0002] Spacecraft batteries are discharged through a plurality of parallel battery discharge regulator modules to form a discharge regulator group (BDRs). Currently, there are two main parallel connection methods, one is direct parallel connection, and each module completes it independently without using a special current sharing control design. Adjustment and control of output voltage and current. The actual output current after parallel connection is determined by the output characteristics of each module. In order to ensure that the actual output current of each module is as consistent as possible, the output characteristics of each module are close by adjusting the design parameters. The o...

AI Technical Summary

Problems solved by technology

[0003] The technical solution of the present invention is to provide a simple, reliable, and widely adaptable output overvoltage protection circuit of the battery discharge regulator for aerospace vehicles, which solves the difficulty in locating the fault point of the output overvoltage protection of the aerospace battery discharge regulator and the complexity of the protection circuit , The problem of low system reliability

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