SU1246243A1 - System for recharging starter storage battery on independent rolling stock - Google Patents

Abstract

The invention can be used for the charging of starter bags of high-capacity containers on an autonomous one. rolling stock with internal combustion engines. The purpose of the invention is to increase the CTC, and even increase the service life of the battery. After starting the internal combustion engine 8, the starting device 7 starts the time relay 6. The frequency of rotation of the engine 8 also increases when the voltage of the DC source 2 operating in the voltage limiting mode reaches a value exceeding the battery emulator 11, the charging current yes begins to grow. The current is limited and maintained constant in the first phase by means of the tokoism {) I-body 9 and voltage regulator 3 until the output to the voltage limiting mode. The charge current decreases to the set value. After the set time has elapsed, contact 5 of time relay 6 breaks the control circuit of the locking device 4 and the battery is disconnected from the direct current source. Also described two modifications of the proposed device. 2 hp ff, 4 ill. & (L 4 O) 1chE 4ib CO 10 / jj / Фuz.l

Description

one

The invention relates to electrical engineering, in particular, to devices for: | for and starter batteries in service, preferably alkaline-nickel batteries,

The device can be used for charging large-capacity starter batteries on autonomous rolling stock (diesel locomotives, diesel trains, truck trailers, etc.) with internal combustion engines.

The aim of the invention is to increase the efficiency of charging, increasing the reliability of the battery.

FIG. 1-3 shows the variants of functional block diagrams of the device; Fig. 4 is a diagram showing the operation cycle of the device.

The system for charging starter batteries consists of the following elements.

The circuit of the battery 1 (Fig. 1) and the DC voltage source operating in the voltage limiting mode and the DC voltage source 2, the input of which is connected to the voltage regulator 3, includes a locking device 4. The locking control circuit device 4 is connected disconnecting contact 5 time relay 6, the input of which is connected to the output of the starter 7. The internal combustion engine 8 drives a source of 2 constant current, which is in the same circuit with current gauge 9, the output of which is connected to the regulating input torus 3 vol. The internal combustion engine and the direct current source are connected by a shaft 10.

The system works as follows.

After starting the engine 8 internal combustion starter 7 gives a signal to connect the relay 8 time. When the engine speed 8 is reached close to the idle frequency, the voltage of the source 2 of constant current exceeds the EMF of the battery of the 1 st battery 1, the charge current increases, which is limited and maintained constant in the first phase using a current meter 9 and a regulator 3 voltages prior to output to voltage limiting mode.

 After this, the charge current slowly begins to decrease to a steady-state value. After expiry 25

46243 2

At the right time, contact 5 of the time relay breaks the control circuit of the locking device and the battery is disconnected from the DC source.

5 With the subsequent start-up of the internal combustion engine, the cycle of the charging system is repeated.

The system for charging the starter battery, shown in Fig. 2, with 0 holds a constant current source 2 with a voltage regulator 3. The source 2 through the thyristor 11 is connected to the battery 1. The output of the starter 7, which

 5 is surrounded by starter current at start-up, connected to the input of time relay 6, one contact 5 of which is connected between the anode and the thyristor control device 4, and the second

20 pin 12 is connected to voltage regulator 3. The input and output of voltage relay 3 has the same connections as the device in FIG. one.

The system works as follows.

After starting the internal combustion engine 8, the signal from the starting device 7 switches on the time relay 6, the thyristor 11 provides the connection of the charge source 2 to the battery 1, since the control electrode circuit is connected to the anode via the disconnecting contact 5 of the time relay. The limitation and maintenance of the current in the first phase after start-up occurs similarly to the device in FIG. After the specified time has elapsed, contact 5 of the time relay breaks the control electric circuit 40 and thyristor 11, while another contact 12 of the same time relay closes, giving a signal to the voltage regulator 3.

As a result, the voltage of the DC source 2 decreases and the thyristor 11 is locked and the battery is disconnected from the DC source. The next time you start the engine, the cycle is repeated.

50 A starter battery charging system shown in FIG. 3 contains a direct current source 2 with a voltage regulator 3, which is connected to the battery 55 through a diode 13 and a contact 14. In the coil circuit of contact 15 14, the disconnecting contact 5 of the time relay 6 is connected, the input of which is connected to the output of the starter 7, which flows around the erase current at start-up.

The system works as follows .5

After starting the engine 8, the starting device 7 gives a signal to turn on the relay 6 time, contact 14 connects the battery to the charge after the voltage 10 of source 2 exceeds the EMF of the battery 1. Diode 13 prevents the flow of reverse current when the rotation frequency of the engine 8 decreases The limitation and maintenance of the current in the first phase after the start-up occurs in the same way as the device in FIG. After the set time has elapsed, the contact 5 of the relay 6 of time breaks the circuit of the coil 15 of the contact 14 and the battery 20 is disconnected from the source 2. At the next start-up, the work cycle is repeated.

Thus, the battery is recharged in the first phase in the DC mode, close to nominally, 25, in the second, in the DC mode, and the total charging time after each start is 30-60 minutes, and is established by experimentation. The charge time is determined by the capacity required to compensate for the discharge when the wiggler is started, the battery self-discharge when there is no charge, and the capacity to power the auxiliary consumers when the engine is stopped.

The feature of the proposed system is explained by the diagrams in Fig. 4, where: the voltage of the charge source is the output voltage of the battery polarization EJ; charge current - Ig and discharge - 1p, batteries are represented as a function of the diesel operation time - Trg. and during the pause - Tnij. (diesel stopped) due to the condition of operation. As can be seen from Fig. 4, in the first phase of the charge Tj, the voltage U varies according to a curvilinear dependence on

from, 0.9 and „th

izg u, const,

due to the depth of the discharge and the nature of the increase in Eg when charging.

At the same time, the charge current limited

The value of the 1-enom normal operation for a nickel-iron battery T is small and amounts to 2-5 minutes.

In the second phase Tj2, the battery is recharged at a decreasing current from Ij 1., dd to Ijj (0.5-0.35) IjHoM, and the total time of the charge cycle is

,, n-Tgo 30-60 min.

 -U,

yy

This time is determined by calculation and experimentation, depending on the temperature of the electrolyte and the optimum degree of charge. At the end of the charge cycle, the battery is disconnected from the source of charge rto to the time relay signal by breaking the charging current circuit or short-term (0.7-1.0 s) decreasing the charge voltage to U ,, 2 0.87 to create conditions

E5 and ,,.

5 o

In regular operation, the ratio of the operating time of the diesel and the charging cycle TjM is usually

Tr1, / tzi, 9-4.

The device makes it possible to drastically reduce energy consumption in charging the battery, i.e. increase the charge efficiency, reduce battery recharge and electrolyte temperature in summer, when there is a danger of exceeding the maximum permissible electrolyte temperature (for nickel-iron batteries +45). At the same time, it allows one to eliminate the increasing non-charge of the starter battery during operation at a moderate temperature of the electrolyte, since the combination of a constant current mode close to the nominal one and a constant voltage mode without a current-limiting resistor allows for a sharp increase in the QDC Yes.

All of these factors have a positive effect on the reliability of the starter battery, in particular, on the service life.

Claims (3)

Invention Formula A system for charging a starter acccumulator battery on an autonomous rolling stock containing an internal combustion engine charged DC source operating in voltage limiting mode, driven by an internal combustion engine and connected to the output of a voltage regulator, starting device connected to the internal combustion engine, a locking device c. charge circuit, characterized in that, in order to increase the efficiency of the charging process and increase the reliability of the battery, into it. In addition, a charging current meter connected to the input of the voltage regulator and a time relay, whose input is connected to the output of the starting device, and the opening contact of this relay are turned on into the control circuit of the locking device. 2. Pop. 1 system, which differs from the fact that the locking device is made in the form of a thyristor, the control electrode of which is connected, with its anode normally-open contact time relay, and the other contact of this time relay is connected to the voltage regulator circuit. direct current source 3. Pop. 1 system, different from the fact that the locking device is made in the form of a diode. and an interrupter, in whose power supply circuit of the coil the breaker contact of the time relay is connected. /ABOUT