SU570152A1 - Device for charging accumulator battery with asymmetric current - Google Patents

Description

The invention relates to a power conversion technique and can be applied from day to day, shaping and training cumulators with an asymmetric current. At the present time, automatic charging devices are installed commercially available on silicon ports according to the three-phase bridge asymmetric rectifier circuit with a smoothing throttle at the fl output. During operation, these devices are supplied with attachments to form an asymmetric one. Such attachments allow the use of stationary charging devices, for example; to form stationary batteries during their start-up or after re-installation. The use of asymmetric current allows (To reduce the time; the formation from 72 to 6-10 hours. The current parameters will be determined by the type of battery H to oscillate in a wide range. The use of reversible contact bridges installed at the output of the chargers is impractical, like They are unreliable and quickly break down when working in aa rooms of powerful charging stations. A device is also known for charging charge battery with an asymmetric current containing a controlled rectifier with a choking throttle. and the tourist-capacitor-discharge circuit 3. The devices are suitable for operation in gas-filled premises of charging stations, but require the installation of a HecTaaaapTirnix, and only 0.1 and expensive chokes and can cause disruption of the switching of the thyristor and the formation of KopoTKOsaNutHyro through the specified thyristor and diode-choke chain. The aim of the invention is to reduce the installed power of the equipment and increase (device reliability. For this, T1p1 is a proposed sleep device6 ". It is recharged by a thyristor connected in series with a discharge thyristor, the capacitor of which is connected between the input terminal of the swiveling throttle and the common point is indicated.

thyristors shunting the battery.

In order to simplify the device and ensure the autonomous operation of the discharge circuit, it is equipped with differentiating chains, through j rechargeable thyristor and thyristor control circuit of the discharge circuit are connected respectively to the cathode capacitor of the rectifier group.

. The drawing is an electrical circuit about the structure.

Matching transformer 1 with two groups of thyristor gates 2,3,4 and diov 5, 6,7 form a three-phase asymmetrical mosquito rectifier connected to js, smoothing the anode choke to the output terminals of the device, the paralpel nsh “of the connected are connected according to after- This includes the thyristors 8, 9 and the battery 10. The capacitor 1120 is subcaptured by the input terminal of the smoothing drospep 12 and the common point of the sequential-connected thyristors Sj E. The control electrode of the thyristor 8 is connected via diode 13 and the peak -trans- 25 pho Mataram 14, shunt resistor 15 in tsen koynonsagora. eleven.

Y%) and control pulses from the general control system (the drawing did not indicate aa t gristors 2,3,4 with a phase offset of 18A and 18O) a rectification of the AC dc current followed by pausing to the required level is provided by smoothing the throttles 3.2; The control system, with, for example, a software switch and a power relay (as in the UZA-15O-8O device), through the 01 diverted controlled

The gap removes the control pulses from the thyristors 2,3,4 and delivers them 40 to the discharge thyristor 9 after the current of the dross 12 drops to zero.

When the thyristor 9 is unlocked, a discharge oscillating circuit is formed, consisting of (consistently) 45 thyristor 9, capacitor 11, throttle 12 and battery 10.

At the moment of transition of the half-wave of current through zero value and the end of the recharge of capacitor 11, 50 thyristor 9 is locked by applying reverse locking voltage to it, determined by the difference of voltages on the windings of capacitor 11 and battery Y. Therefore, peak-transformer 14 turned on 55 into the circuit of capacitor 11, forms a narrow current pulse at the moment of the transition of the recharged current through a zero value. The diode 13 transmits to the control electrode tirnsOfxJ 8 including an impulse of the required field p;

and the resistor 15 ensures the matching of the parameters of the recharge current and the starting pulse. By inserting the control electrode of the thyristor 8 through the differentiating chain 13, 14, 15 into the circuit of the capacitor 11, the unlocking of the thyristor 8 occurs only after the end, the process of recharging the capacitor 11 and fusing the thyristor 9. After unlocking the thyristor 8, an internal circuit of the reverse reloading of the capacitor 11 is formed consisting of a series-connected thyristor 8, throttles 12 and a capacitor 11, and the capacitor 11 is recharged to the voltage of the initial polarity. If one inverse discharge pulse is enough to form an asymmetric charging current, simultaneously with the unlocking of the thyristor, control current pulses are applied to the thyristors 2.3, 4 and the next positive half-wave of the charging current is formed. If the pulse-width regulation of the duration of the discharge current pulse is not required, the thyristors 8, 9 are switched on alternately with transmission through a battery of a series of discharge current pulses. Thus, the circuit provides regulation within wide limits of not only positive, but also negative current pulses. Additional regulation of the parameters of the discharge current pulses can be ensured by a corresponding change in the parameters of the capacitor 11 and the throttles 12.

With the sufficiency of one discharge current pulse, the overall control system can be used practically without changes from conventional serial OZA type batteries. In this case, the control electrode of the thyristor 9 is connected through the differentiating circuit of the anaphogic circuit 13, 14, 15, successively into the minus bar of the device. When thyristors 2-4 are disconnected and the positive charge current decreases to zero, the thyristor 9 is switched on with the help of the indicated differentiating chain,

As a result, the entire charge node consists of a capacitor 11, two respectively-sequentially connected thyristors 8, 9, and two differentiating chains 13, 14, 15. Simplicity, reliability, compactness, the absence of chokes, the possibility of connecting the discharge node to serial chargers without any alteration of the latter, they create the main technical and economic affect of the invention.

Claims (3)

1. Device dp for charging an asymmetric GOKOM battery of a mountain battery, containing a controlled rectifier with an accumulator, a choke and a discharge thyristor-capacitor circuit, about t and h. Now that, with | the goal is to reduce the installed power of the equipment and increase its reliability, it is equipped with a rechargeable thyristor connected in series with a discharge thyristor, the capacitor of which is connected between the input terminal of the smoothing throttle and the common point of the indicated thyristors that run the battery. 2, The device is in accordance with clauses 1 and 1, so that, in order to simplify the device and ensure the autonomous operation of the discharge circuit, it is equipped with differentiating chains through which the lynpasors of the recharging thyristor and the thyristor of the circuit the discharge is connected respectively to the condenser and the cathode group of the rectifier. Sources of information taken into account in the examination: 1. ZAR one of the automatic device type UZA-150-80. 2. Author's certificate Ns 404146, cl. H 02; j 7/10 ,,: 1972. 3. The author's certificate number 430454, cl. H O237 / 1O, 1973, (prototype). "2b5.4 2 12 rvwv4.