SU580611A2 - Device for charging storage battery - Google Patents

Description

one

This invention relates to the field of electrical engineering.

According to the main author. St. No. 555502, a device for charging a battery is known, which contains a constant voltage source, parallel charging batteries, regulating elements, an alternating voltage source and transformers connected by parallel valve blocks with a number of parallel branches, the secondary windings of which are connected. respectively, to the inputs of the separating valve blocks, the main primary windings connected in series are connected together with the successively connected additional ones GOVERNMENTAL primary windings of the transformer to the AC voltage across the on-off switching element from the control unit, wherein otnonlenie number of turns of the primary windings of each transformer is not equal edinipe. A disadvantage of this device is the low power factor utilization of the charging source.

In order to increase the coefficient of use of the source power in the proposed device, the batteries and the corresponding booster transformers are combined into several groups, for example, two, with the main primary windings

one group is connected in parallel with the additional primary windings of the other groups.

Pa figs. 1 is a diagram of the described device; in fig. 2 - charts of currents during battery charging: a - when the total voltage: the supply of a constant current source and a booster voltage from the secondary primary windings is lower than the final voltage

batteries; b - when this total voltage is greater.

The device contains a power source of a constant current (terminals 1 and 2), a control meter 3 that controls the charging current of all batteries. The charging current is regulated by a resetter 4. By means of separating valve blocks 5-8, batteries 9-12 are connected to the charge. The secondary windings of 13-16 transformers 17-20 are connected to the input of the valve blocks. Each transformer 17-20 contains the main primary 21-24 and additional 25-28 windings. When charging single-cell batteries, the number of turns, respectively

are equal

  ,

The number of turns of the additional primary winding in each transformer is not equal to the number of turns of the main primary winding (less or more). The primary winding through the corresponding, its circuit commute, its element (key) 29 is connected to the source

30 alternating voltage. The switching element 29 is charged by the control unit 31.

Rechargeable batteries and the corresponding booster transformers are combined into two soils (the first group - elements 5, 6, 9, 10, 17 and 18, the second - elements 7, 8, II, 12, 19 and 20), while the main The primary windings of one soil (for example, windings 21 and 22) are connected in parallel with series-connected additional primary windings of another group (windings 27 and 28).

The duty cycle of following the pulses of the control unit is equal to two, since it is the most optimal.

The device works as follows.

When the control signal from the unit

The switching element 29 connects to the output of the alternating voltage source 30 the first or second group of primary windings. For example, consider battery charge.

in the position of the key 29 shown in FIG. 1. In this case, the main primary windings 21 and 22 of the first group and additional windings 27 and 28 of the second group are connected in parallel to the alternating voltage source 30. Since the number of turns of each additional winding is greater than the number of turns of the main one, a greater impulse of charge current is applied to the first group of batteries than to the second one (see fig. Section O - A). In another position of the key 29, on the contrary. Thus, changing the position of the key 29 changes

only the magnitudes of the pulses of charge currents applied to each group of batteries, and the energy from the direct current source is consumed continuously, which increases its power utilization rate.

FIG. 2 The following symbols are accepted: / 1 - charging current of the first group of batteries; / 2 - charging current of the second group of batteries; / - source current.

Pa figs. 2, and in section O - ti (key in the polarization shown in Fig. 1) the first group of batteries is charged; A charge pulse is generated by adding the voltage of the DC source and the boost voltage from the main (with fewer turns) of the primary winding. The second group of batteries is not charged. In the area (/ i-4) only the second group of batteries is charged.

FIG. 2b, a charge pulse is generated in the section O-ti due to the voltage of the source and "boost voltage from the main primary windings, and a charge pulse / 2 is formed in the second group of batteries due to the voltage of the source and the boost voltage of the additional primary winding. On the site, on the contrary. The process then repeats.

Claims (1)

Invention Formula Battery charger according to ed. St. No. 555502, characterized in that, in order to increase the utilization of the source power, the batteries and the corresponding booster transformers are combined into several groups, for example, two, with the main primary windings of one group connected in parallel with the additional primary windings of the other group.