RU44892U1 - BATTERY CHARGER FOR BATTERIES - Google Patents

Abstract

The utility model relates to devices for charging and recharging acid batteries and can be used both in stationary and in the field. The technical result that can be achieved using the proposed utility model is reduced to the simplicity and visibility of setting the charge parameters, high accuracy of automatic maintenance of the device’s operation parameters, the possibility of on-line monitoring of the charge mode and battery status and the operational change of the set charge parameters during battery charging, the presence of protection against short circuit at the output and improper battery connection, providing an indication of the inclusion of the kit and emergency condition Ia channels, the possibility of parallel connection to increase the output channels of the output current and output serial communication channels to increase the output voltage, decrease the dimensions and weight of the kit. The battery charger consists of a power source (not shown in FIG.) Connected to a radio interference filter 1, which is connected through an input circuit breaker 2 to a power factor corrector 3, the latter is connected to a fan 4, an auxiliary power source 5, and converters 6 and 7, while the converters 6 and 7 are equipped with circuit breakers 8 and 9 installed on the outputs of the converters 6 and 7, the latter have output channels and are connected to rechargeable batteries through the circuit breakers 8 and 9 batteries, while the auxiliary power source 5 is connected to the power factor corrector 3 and the converters 6 and 7 to provide power to their control circuits

the set voltage - one for the power factor corrector 3 and three different for converters 6 and 7. Each converter 6 and 7 has an indication of the emergency state, and an indication of the current stabilization and voltage stabilization modes during the autonomous operation of converters 6 and 7, as well as in series or parallel connection of output channels (not shown in FIG.). IL 1 1 P. F.

Description

The technical field to which the utility model relates.

The utility model relates to devices for charging and recharging acid batteries and can be used both in stationary and in the field.

State of the art

A device for charging a battery containing a three-phase source, for example a transformer, a rectifier with current-limiting inductors, the windings of which are equipped with taps from the midpoints, while one phase winding of the source is made in the form of sections that separately form a series connection circuit with the other and its third windings , in parallel to each of these circuits are connected the choke and valve cells formed by two on-board diodes, while the common point of the valves of one cell indicates one, and the middle point of the inductor winding of another cell is the other output terminals of the device, and the common point of the valves of the other cell is connected to the output of the middle point of the inductor winding of one cell (see AS USSR No. 738048, class. H 02 J 7/10 )

The disadvantage of this device is its low reliability. A charge-discharge device is known that contains the first and second filter capacitors, the first, second and third MOS transistors, the first, second and third diodes, while the drain of the first MOS transistor and the cathode of the first diode are connected to the first terminal of the first capacitor

filter, the source of the first MOS transistor and the anode of the first diode are connected to the first terminal of the inductor, the drain of the second MOS transistor and the cathode of the second diode, the source of the second MOS transistor and the anode of the second diode are connected to the second terminals of the first and second filter capacitors, the anode of the third diode and the common wire of the circuit, the source of the third MOS transistor is connected to the second terminal of the inductor and the cathode of the third diode, and its drain is connected to the first terminal of the second filter capacitor, while the terminals of the first filter capacitor are intended for I connect the battery, and the terminals of the second filter capacitor to connect the power source and the load, while the fourth MOS transistor and fourth diode are additionally introduced into the device, the drain and anode of which are connected to the second terminal of the inductor, the source of the fourth MIS transistor is connected to a common wire circuit, and the cathode of the fourth diode to the drain of the third MOS transistor (see US Pat. RF No. 2217853, N 02 J 7/10, 9/06).

The disadvantage of this device is the design complexity. The closest in technical essence and the achieved positive effect and accepted by the authors for the prototype is a charging kit containing a interconnected power source, a radio interference filter, a circuit breaker, fan, converters, batteries (see Charging kits KZT IZHTSh 435211.089 TU, Stavropol )

The disadvantage of this charger kit is:

- lack of the ability to sequentially enable channels;

- food only from a three-phase network with deeply grounded neutral;

- there is no signaling of the mode of operation of current stabilization and voltage stabilization.

Utility Model Disclosure

The technical result that can be achieved using the proposed utility model is reduced to the simplicity and visibility of setting the charge parameters, high accuracy of automatic maintenance of the device’s operation parameters, the possibility of on-line monitoring of the charge mode and battery status and the operational change of the set charge parameters during battery charging, the presence of protection against short circuit at the output and improper battery connection, providing an indication of the inclusion of the kit and emergency condition Ia channels, the possibility of parallel connection to increase the output channels of the output current and output serial communication channels to increase the output voltage, decrease the dimensions and weight of the kit.

The technical result is achieved by means of a battery charger containing interconnected power source, radio interference filter, circuit breaker, fan, converters, rechargeable batteries, the device is equipped with a power factor corrector and circuit breakers installed on the outputs of the converters, and the power factor corrector connected via a radio interference filter and circuit breaker with a single-phase power supply, fan and auxiliary by a single power source, converters, the latter are connected via rechargeable circuit breakers to rechargeable batteries, while the converters are capable of indicating operating modes — stabilizing voltage and current and protecting against incorrect battery connection.

Brief Description of the Drawings

In FIG. presented charger for rechargeable batteries, functional diagram.

Utility Model Implementation

The battery charger consists of a power source (not shown in FIG.) Connected to a radio interference filter 1, which is connected through an input circuit breaker 2 to a power factor corrector 3, the latter is connected to a fan 4, an auxiliary power source 5, and converters 6 and 7, while the converters 6 and 7 are equipped with circuit breakers 8 and 9 installed on the outputs of the converters 6 and 7, the latter have output channels and are connected to rechargeable batteries through the circuit breakers 8 and 9 batteries, while the auxiliary power supply 5 is connected to the power factor corrector 3 and the converters 6 and 7 to provide power to their control circuits with the set voltage - one for the power factor corrector 3 and three different for converters 6 and 7. Each converter 6 and 7 has an indication of the emergency state, and an indication of the current stabilization and voltage stabilization modes during the autonomous operation of converters 6 and 7, as well as in series or parallel connection of the output channels (in FIG. not shown).

The possibility of operational monitoring of the charge mode and the state of the battery provides the availability of devices, ammeter and voltmeter (not shown in Fig.), In each converter 6 and 7 with the corresponding indication of current or voltage stabilization modes.

Operational change of the set parameters of the charge in the process of charging the battery provides the presence of handles rough and accurate

ammeter settings and manual adjustment knobs of the voltmeter on each converter 6 and 7 (not shown in Fig.).

The battery charger for batteries is as follows.

The charger is designed according to the scheme with high-frequency conversion of the rectified input voltage. The supply voltage through the radio interference filter 1 and the input circuit breaker 2 are incident on the power factor corrector board 3, which stabilizes the rectified voltage at 340 V and corrects the shape of the current consumption in order to improve the input power factor. The fan 4 cools the fuel elements inside the charger. Auxiliary power supply 5 provides power to the control circuit of the power factor corrector 3 and the control circuits of the converter boards 6 and 7. The converter cards 6 and 7 connected to the outputs of the power factor corrector 3 convert the stabilized voltage of 340 V into an output constant voltage and regulate it from 10 up to 31.5 V at load currents from 5 to 20 A. The operator sets the parameters of the charge of current and voltage before starting the charge with the help of a coarse and fine adjustment of the current and and setting the voltage located on the front panel (Fig. not shown). In the process of charging, the set parameters are supported automatically. Currents and voltages are controlled by measuring devices - an ammeter, a voltmeter in each output channel of the device through which the batteries are charged. Converters 6 and 7 are protected against short circuits at the output terminals, and the output circuit breakers 8 and 9 provide protection against improper battery connection. Each converter 6 and 7 has an ALARM indicator. Possible cases of including this indicator:

- short circuit at the output terminals of the charger;

- the failure of the circuit elements of the converters 6 and 7. The proposed utility model in comparison with the prototype and other known technical solutions has the following advantages:

- food from a single-phase alternating current network;

- sinusoidal shape of the input current, which provides a high power factor;

- simplicity and clarity of setting the charge parameters;

- high accuracy of automatic maintenance of parameters during the operation of the device;

- the ability to quickly monitor the charge mode and battery status;

- the ability to quickly change the set charge parameters in the process of charging the battery;

- the presence of protection against short circuits at the output and improper battery connection;

- providing an indication of the inclusion of the kit and the emergency state of the channels;

- the possibility of parallel connection of the output channels to increase the output current;

- the possibility of serial connection of the output channels to increase the output voltage;

- reduced overall dimensions and weight of the kit.

Claims (1)

A battery charger containing interconnected power source, radio interference filter, circuit breaker, fan, converters, rechargeable batteries, characterized in that it is equipped with a power factor corrector and circuit breakers installed on the outputs of the converters, and the power factor corrector is connected through a filter radio interference and circuit breaker with single-phase power supply, fan and auxiliary power supply, converters , The latter through the circuit breakers are connected to the rechargeable batteries, the converters are configured to indicate operating modes - current and voltage stabilization and protection against wrong connection of batteries.