SU1624569A2 - Device for diagnosis of operability of storage cells in a storage battery and for detecting the end of battery discharge - Google Patents

Abstract

The invention relates to electrical engineering, in particular to automated systems for monitoring and diagnostics of batteries. The purpose of the invention is to increase the reliability of a battery by preventing the batteries from discharging below the minimum voltage level. The device contains a monitoring and control system for measuring the voltage of each battery, a reference voltage setting device, a comparison circuit for each battery voltage with a reference one, a voltage meter for the entire battery, an accumulator of all batteries that have reached the minimum level, a battery count indicator, the voltage of which has reached the minimum level or has dropped below, two adders, a multiplying-dividing circuit, a null organ and an additional unit of the reference voltage. It is also equipped with a trigger unit containing the number of triggers according to the number of batteries in the battery and providing, through the additionally introduced relays, the disconnection of those batteries whose voltage during discharge is at a minimum. 1 il. Yo

Description

The invention relates to electrical engineering, in particular, to battery monitoring and diagnostics systems, and can be used when discharging batteries during cycling and shaping.

The purpose of the invention is to increase the reliability of a battery by preventing the batteries from discharging below the minimum voltage level.

The drawing shows a block diagram of the device.

The device contains a monitoring and control system 1 for measuring the voltage of each battery, a reference voltage setting device 2, a voltage comparison circuit 3 for each battery with a reference voltage, a voltage meter 4 for the entire battery, and the output of the comparison circuit 3 is the voltage accumulator 5 batteries that have reached or passed the minimum level, the counter 6 of the number of batteries whose voltage has reached the minimum level or has dropped below, with adder 7 and block 8 of triggers, between adder 5 and meter 4 voltage baht peu adder 9 is connected, the outputs of adders 7 and 9 are connected to the input of multiplier Tel'nykh-separating circuit 10, the output of which is connected to one of the inputs of a zero-body 11 to the second input of which is connected yield additional 12 zadat- snip reference voltage.

When a battery is discharged, until the voltage on any battery has dropped to its minimum level, the opening contacts of the relay are in a position that ensures that

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Connection of batteries to the battery. The control and circumferential system 1 alternately applies the voltage of each battery to the comparison circuit 3, it compares the battery voltage to the reference voltage specified by the reference voltage sensor 2. In the case when the voltage across the battery is higher than the reference voltage, the pulse from the comparison circuit 3 is not output, nothing is added to the adder 5 and the counter 6. The control and tracking system 1, when polling the batteries, simultaneously connects the input of the trigger unit 8 corresponding to the battery to the output of the comparison circuit 3.

When the voltage on the nth battery drops to the minimum level or lower, the control system 1, at the time of the nth battery, polls its voltage to the comparison circuit and simultaneously connects the input of the nth trigger of the trigger unit 8 to the output of circuit 3 compare. In comparison circuit 3, the voltage of the n-th battery is compared with the reference, set by the reference voltage adjuster 2. Since the voltage of the nth battery has reached the minimum level or below, the comparison circuit 3 outputs a pulse to the counter 6 and the trigger unit 8, and simultaneously the voltage of the nth battery to the adder 5 is entered. According to the pulse of the comparison circuit 3, the nth trigger of the trigger block switches, the relay triggers at the trigger output, the open contact opens, the nth battery is switched off from the series circuit by the closing contact of the same relay, the series circuit is restored.

With a further decrease in voltage on the remaining batteries to the minimum level or below, they are disconnected from the series battery circuit as described above, while the counter 6 and the adder 7 take into account the number of batteries that have reached or passed the minimum voltage level on the adder 5 the voltage of all batteries that have reached or passed the minimum level, adder 9 summarizes the voltage of all disconnected batteries at the time of their disconnection with the battery voltage measured, measure 4 eat voltage. The information in the form of voltage from adders 7 and 9 goes to multiplying-dividing circuit 10. At the output of multiplying-dividing circuit 10, there is some voltage, the value of which varies depending on the input values (voltages at the outputs of adders 7 and 9 ) according to the law, due to the internal logic of building a multiplying-dividing scheme 10. When the boundary conditions that determine the end of battery discharge (a certain number of disconnected batteries and (or) decrease the battery voltage to the minimum level) are reached, the voltage the output of reprographic-separating circuit 10 reaches a value at which the zero-body 11 that compares the voltage reprographic-separating circuit 10 and an additional setpoint voltage 12, outputs a signal to end the discharge battery.

Thus, the proposed device for diagnosing battery performance in a battery and determining battery discharge prevents the batteries from discharging below the minimum voltage level.

Claims (1)

Invention Formula A device for diagnosing the health of batteries in a battery and determining the end of a battery discharge according to auth. No. 1065933, characterized in that, in order to increase the reliability of the battery by preventing the batteries from discharging below the minimum voltage level, a trigger block containing the number of triggers equal to the number of batteries in the battery is inserted into it, the batteries are connected to one another into a series circuit through a disconnecting pair of changeover contacts of newly introduced relays included in the output circuit of each trigger in the order of a battery survey, the closing pair of the aforementioned changeover contacts connected with the same poles of adjacent batteries of the battery, and the input circuits of the flip-flops are connected by a control-running system to the output of the comparison circuit.