SU598180A1 - Charging system - Google Patents

Description

(54)

CHARGE SYSTEM

one

The present invention relates to the field of battery operation and can be used for forming, charging and training batteries.

Battery charging systems are known to have an asymmetric Current, the formation of which is ensured by the addition of direct current and alternating current of a certain frequency lj.

Also known are devices for charging batteries with an asymmetric current, in which two batteries, connected in series, are connected through semiconductor valves to the transformer secondary winding circuit via a 2T push-pull circuit.

Systems are known for charging batteries, which form an asymmetric current by adding constant and variable components and provide a relatively high EFF. Through the use of the discharge pulse of one battery as the charge pulse of another battery E.

In the simplest case, the system contains a three-core transformer with two secondary windings, the ends of one of which are connected via diodes to the middle terminal of each winding, the ends of which, in turn, are connected via two batteries and control resistors to the middle one secondary winding 4.

However, the transformer in the known devices is structurally complicated due to two secondary windings with average leads. In addition, it has an increased installed ms value and a relatively low efficiency due to the sequential subtraction of the instantaneous values of the voltages of the secondary half windings, as a result of which compensation of the windings energy leads to their useless load, increased loss and reduced efficiency.

To reduce the installed power of the equipment and increase the efficiency of the proposed system, diodes connected with like terminals to the ends of one of the secondary windings of the transformer are connected to terminals of a battery connected to the ends of the other secondary windings of the transformer.

FIG. 1 shows the principal

Claims (4)

system scheme; in fig. 2 a, b, c - forms of currents characterizing the operation of the system. The system contains a transformer 1 with windings 2-4, diodes 5.6, batteries, battery 7.8. Transformer 1 ends of its primary winding 2 is connected to the AC mains. Its secondary to winding 3 is connected to the anodes of diodes 5.6, the cathodes of which are connected via batteries of 7.8 volts to equal their charge to the middle terminal of this winding. The ends of the other secondary winding 4 are connected to the same free terminals of the batteries T, 8 interconnected. PruG supplying the supply voltage to the system input alternating voltage appearing on winding 3, through diodes 5,6 provides a charge of batteries 7,8 on a two-stroke half-wave rectified half-wave current (see 2 a). The magnitude of this current is determined by the voltage difference across each of the half-windings 3 and batteries x 7.8, as well as the internal resistance of the charging circuits. The alternating voltage appearing on the winding 4 is applied directly to the same-type battery terminals 7.8, the total voltage on which is almost zero due to their parallel-parallel connection. Therefore, under the action of the voltage of the winding 4, a sinusoidal current flows through the battery 7.8, the magnitude of which is determined only by the voltage of the winding 4 and the resistance of the current circuit (Fig. 26). Therefore, the resulting current flowing through the battery 7,8 is the sum of the positive half-sine and ac currents, i.e. is asymmetric (Fig. 2c). Due to the proposed inclusion of batteries in a two-wavelength 3.5.6 rectifier circuit in a push-pull pattern and the connection of the second secondary winding to the terminals of the above-mentioned said batteries, the proposed circuit provides an independent summation of currents directly in the batteries without any mutual compensations. Due to the fact that the battery batteries 7.8 are charged (rectified by diodes 5.6 by current) with half-wave pulses in the push-pull circuit, rather than by two-wave pulses, the installed power of the winding 3 and diodes 6 are reduced by almost two times. Since it is not necessary to compensate for the negative half-wave AC current of the rectified half-wave of the charging current, both the voltage and the installed power of the secondary winding 4 decrease in order to form the resultant negative half-wave of the current. It should now form a much lower current. And if we take into account that this winding is operating at almost zero voltage of anti-successive batteries 7.8, its installed MS is an order of magnitude lower than the winding 3 voltage. As it is not necessary to divide the rectified current by two parallel charging batteries. It also eliminates the need for current-conducting resistors, including in the prototype in series with the batteries and the drive. Known technical solutions can be used to adjust the parameters of the asymmetric current: Dymen diodes with controlled valves, installation of control elements at the input of the device, etc. Claims of the Invention A charging system comprising two batteries, a three-winding transformer, the ends of one of the secondary windings of which are connected to the diode terminals of the same name, and the ends of the other to the free terminals of the two mentioned batteries, connected by a counter-common and common point which are connected to the middle terminal of one secondary transformer winding, characterized in that, in order to reduce the installed power of the equipment and increase the efficiency, the other terminals of the diodes are connected to emmam secondary batteries associated with the other ends of the secondary winding of the transformer. Sources of information taken into account in the examination: 1.Patent of France, 2097424, cl. H 01 W 45/00, 1972. 2. Authors certificate of the USSR 154913, cl. H 02 J 7/10, 1972. 3. Authors certificate of the USSR 299901, cl. H 0237/10 1969. 4. Zorokhovich A.E. and others. Devices for charging and discharging batteries. 1975, p. 200, fig. 7-6.