SU1325666A1 - Device for charging sealed nickel-hydrogen storage batteries - Google Patents

Abstract

The invention relates to electrical engineering and can be used in the operation of sealed nickel hydrogen (NOT) batteries. The purpose of the invention is to increase the specific characteristics of the battery. In the process of charging an accumulator battery, the pressure in it grows, as a result, the parator (k) 4 triggers to the counting inputs. pulse counters (SI) 7 and 8 signals are received from the generator 6, K 4 returns to its original state, and the process repeats until the output signal uQ in the battery charge circuit is formed at the output of the pulse counter 13. Counter 8 at this time fixes the pressure increment dP. in the accumulator, which is compared with a predetermined P value of the pressure increment. If 4P, - LR, then the charge continues. If LV is A Pd, then the charge mode is terminated. The device allows you to fully charge the HB battery regardless of destabilizing factors and to exclude the possibility of overcharging. 1 il. (L w u

Description

The device relates to electrical engineering and can be used in the operation of sealed nickel-water batteries, for example, in these topics of power supply of autonomous objects with primary sources of limited power.

The aim of the invention is to increase the specific characteristics of the battery by telling it the maximum charge capacity regardless of the effect of destabilizing factors.

The drawing shows the block diagram of the device

The device contains battery 1, charge current source 2, pressure measuring sensor 3, comparator 4, AND 5 logic element, pulse generator 6, pulse counters 7 and 8, digital-to-analog converter 9, shunt 10, amplifier 11, converter 12 voltage to the frequency counter 13 pulses, D-flip-flop 1A, time delay line 15,

Due to the charge of the battery 1 from the source 2 of the charging current, the pressure in the battery 1 increases and in proportion to it the voltage at the output of the measuring pressure sensor 3 increases, which leads to the triggering of the comparator A and passing through the logic element 5 of the pulse . from generator 6 to the counting inputs of counters 7 and 8 pulses. In this case, the voltage at the output of the D / A converter 9 increases and the comparator 4 returns to its original state by closing the AND 5 logic element. Then the process repeats until the integrating ampere-hour meter containing shunt 10, amplifier 11, converter 12 voltages per frequency and a pulse counter 13, a signal that a metered amount of 4Q electricity in the charge circuit of the accumulator 1 passes;

The state of the meter 7 characterizes the current value of the pressure in the battery, and the state of the meter 8 indicates the pressure increment caused by the passage of a metered amount of electricity aQ in the charging circuit.

The number of bits of the counter 7 and the digital-to-analog converter 9 determines the measurement resolution of the output voltage of the measurement pressure sensor 3 and, therefore,

depends on the specified accuracy of the device. The capacity of the counter 8 is selected in accordance with the boundary value of the increment of pressure ip determined by a given decrease in the increment of pressure: when a metered amount of electricity AQ passes through the charging circuit.

If the increment of pressure P is greater than or equal to the specified value of aP, then the counter-8 is filled completely, the voltage of the logic 1 is formed at the D input of the D flip-flop 14, and when the trigger input of the trigger 14 at the clock input 14 confirms A state of logical 1 flip-flop 14, corresponding to the operation of the device in the Charging mode. The pulse from the output of the counter 13 passes through the time delay line 15, and brings the counters 8 and 13 to the initial state.

Then the process repeats until the increment of pressure JP- in the accumulator due to the flow of the metered amount of electricity A in the charging circuit A Q becomes less than the set value A, At the same time, the counter 8 of pulses does not have time to be filled, the voltage is kept at its output a logical O and a pulse from the output of the counter 13, the trigger 14 is switched to the logical state O, in which the device switches off the Charging mode,

Thus, the proposed device allows to fully charge the nickel-hydrogen battery regardless of the effect of destabilizing factors and at the same time excludes the possibility of overcharging it, which significantly improves it. specific electrical characteristics and ensures efficient use of the entire capacity of the battery

Claims (1)

Invention Formula A device for charging a hermetic nickel-hydrogen battery containing a source of charging current, leads for connecting the battery, and a pressure switch for mounting on the battery, characterized in that, in order to increase the specific characteristics of the battery, shunt, yci-shitel, voltage-to-frequency converter, line v31 a variable delay, a D-flip-flop, a comparator, an AND gate, a pulse generator, three pulse counters and a digital-to-analog converter, with a shunt connected through the amplifier in series with the –outputs for connecting the battery and the charging current source the frequency of which output is connected to the counting input of the first pulse counter, the output of the first counter is connected to the clock input of the D-flip-flop and through its delay line to its own and second pulse counter the installation inputs at zero th state,.-counting inputs Editor G.Gerber Order 3123/54 - Compiled by G. Vedeneev Tehred A. Kravchuk Corrector Circulation 617 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 the second and third pulse counters are connected jc to the output of the logic element I, to one input of which is connected the output of the pulse generator, and to the other to the output of the comparator, to the first input of which is connected the output of the pressure sensor, and to the second - to the output of a digital-to-analog converter, whose inputs are connected to the outputs the third pulse counter,: the output of the second pulse counter is connected to its counting stop input and to the D input of the D flip-flop, the output of which is connected to the control input of the charging current source. Proofreader A.Zimrkosov