RU1836756C - Method of nickel-hydrogen battery usage - Google Patents

Abstract

Usage: in the operation of nickel-hydrogen storage batteries (AB) in autonomous power supply systems, especially when operating as part of geostationary satellites. SUMMARY OF THE INVENTION: When operating nickel-hydrogen batteries in a charge-discharge mode, a faulty battery is shunted provided that the battery terminals have a minimum voltage when it is discharged and has a maximum voltage exceeding the maximum charge value. 1 yl.

Description

The invention relates to the electrical industry and can be used in the operation of nickel-hydrogen storage batteries in stand-alone power supply systems.

The aim of the invention is to increase the reliability of timely shunting of a faulty battery.

The drawing shows a device of an autonomous power supply system explaining the operation of the proposed method.

The device comprises a solar battery connected via a series stabilized converter 3 to load 4, stabilized charge. a converter 2 connected in parallel to the solar battery 1, a battery 5 connected via a stabilized bit converter 6 to a load 4, and a battery voltage monitoring device 7 with inputs connected to the batteries of the AI-An battery. for nutrition - to load 4.

Charged stabilized converter 2 consists of a power regulating switch 2i controlled by a pulse width modulator 2, and a voltage boost. made on the transformer 22, diodes 2z, 24 and transistors 2b. 2nd

The series stabilized converter 3 consists of a power control switch 3i controlled by a pulse-width modulator Zr.

00 CL ON V L O

 With

The stabilized bit pre-actuator 6 consists of a power control key 6i. controlled by an iris-pulse modulator bz.

Accumulator battery 5 consists of accumulators AI - Ap, in parallel with which shunt elements 1 - 5p are connected - short circuit disconnectors.

The battery voltage control device 7 contains a battery 7i - 7P for monitoring the minimum and maximum battery voltage of the battery 5. Each cell has a PI-Pn relay, the contacts of which are connected to the supply circuit to the heating windings of the single-acting short-circuit switches 5i - 5P.

The device operates as follows.

During operation, the battery 5 operates mainly (98% of the resource) in the periodic charge mode from the solar battery 1 through the stabilized charge converter 2. This operating mode allows it to be kept in constant readiness in case of emergencies (loss of orientation A satellite in the sun) or on the passage of regular shadow areas of the orbit.

The load 4 is supplied from the solar battery 1 through a serial stabilized converter 3.

During the passage of the shadow portions of the orbit, or in case of an orientation disorder, the load 4 is powered by the battery 5 through the discharge stabilized converter 6.

If any AI-Ap battery fails during operation due to the appearance of an internal shunt, the voltage

the corresponding cell 7h - 7P of the battery voltage control device 7 will decrease on it, it will detect this decrease and close the Pi - Pn relays with its contacts

heater circuit for a single-acting short circuit. The battery will be reliably shunted and further work will follow the same old algorithm.

If the battery fails, the voltage on the battery rises above the maximum charge value. So, with a complete break, the voltage will be the value: voltage of the solar battery 1

plus voltage boost minus e.m.s. (n - 1) rechargeable batteries. The battery voltage control device 7 will detect this excess and then turn off the corresponding

the accumulator from work will occur as if an internal shunt occurs.

Thus, the proposed method improves the reliability of timely shunting of a faulty battery, which increases the reliability of an autonomous power supply system and a satellite as a whole.

Claims (1)

Formula from Acquisition Method of operating a nickel-hydrogen storage battery by conducting charge-discharge cycles, controlling the minimum voltage of the batteries to limit discharge and bypass . faulty battery, characterized in that, in order to increase the reliability of timely shunting of the faulty battery, in addition to shunting the batteries, their maximum voltage is controlled at a level exceeding the maximum charge value.