SU506087A1 - Device for charging a chemical current source with an asymmetric current - Google Patents

Description

one

The invention relates to the battery industry and can be used, for example, during long-term storage of chemical current sources (HIT) in a charged state.

A device for charging a chemical current source with an asymmetric current is known, for example, for regenerating and charging manganese-zinc cells, comprising an alternating current source, a gate connected to the charging circuit, and a transistor discharge cell with a ballast resistor in the collector circuit and a limiting circuit in the base circuit. .

However, this device is difficult because it requires the use of a transformer.

In order to eliminate this drawback in the proposed device, the emitter-base transition of the discharge cell transistor is connected in parallel to the gate.

FIG. 1 shows the scheme of the proposed device; in fig. 2 and 3 - diagrams of variants of the device.

The electrical circuit of the device contains an alternating current source 1, a gate 2 and a discharge transistor cell composed of a transistor 3, a ballast resistor 4 and a current organizing resistor 5. A gate 2 is connected to the battery charge circuit 6. The ballast resistor 4 is connected in series with the emitter-collector junction the transistor 3, the emitter-base transition of which is connected to the valve 2 through the current-limiting resistor 5.

The device works as follows.

In one of the half-periods, the voltage of the source 1 of the battery 6 is charged through the open valve 2. In this half-period, the voltage drop across the valve 2 is applied to the emitter base transition of the transistor 3 in the blocking direction, with the result that the discharge cell is turned off. In the other half-period of the supply voltage, the valve 2 is closed and a control current flows through the emitter-base transistor 3, the value of which is limited by the resistor 5. At the same time, the transistor is open and the ballast resistor 4 is connected to the battery 6 and the battery is partially discharged. In the subsequent voltage period, the processes in the device are repeated. The required partial discharge mode can be achieved by a suitable choice of resistors 4 and 5.

To eliminate the constant component in the current source of the device can be performed according to the scheme in FIG. 2. The said device allows two identical batteries to be charged simultaneously, and when one battery is discharged, the second one is recharged. This device works similarly to the above.

Here, one battery is charged through valve 2 and discharged using cell 3, 4, 5, and the second battery is charged through valve 7 and discharged with cell containing transistor 8 and resistors 9, 10.

If it is necessary to charge in the manner described in one battery, it is expedient to carry out the device as shown in FIG. 3. Here source 1 is included in the diagonal of the half-bridge formed by the valves 2, 7 and the battery halves 6. Parallel to the valves are the emitter-base transitions of the transistors 3 and 8 of different conductivity. Resistors 4 and

9 are ballast and resistors 5 and

10-- current-limiting. The exception of the constant component of the current is achieved by charging the same knob batteries or two batteries in different half cycles of the supply voltage, with the result that the average value of the source current over a period is zero.

Claims (1)

Invention Formula A device for charging a chemical current source with an asymmetric current, for example, for regenerating a manganium-zinc cell battery, containing an alternating current source, a gate connected to the charging circuit, and a transistor discharge cell with a ballast resistor in the collector circuit and a limiting circuit in that, for the purpose of monocare, the emitter-base transition of the discharge cell transistor is connected in parallel to the gate. Fig 1 141 27