RU2614036C2 - Portable radio stations power supply device - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used as reliable DC power supply device of portable radio stations, vehicles, etc. Technical result is aimed at improvement of power supply systems storage batteries charge capacity. Technical result is achieved due to, that power supply device, containing storage batteries, electronic switches, connecting batteries with load, additionally comprises time relay, connected to electronic switches control inputs, logic element "AND", connected to time relay control input, voltage relays, connected to storage batteries outputs and with logical element "AND" inputs. When using storage batteries with smaller current take-off and at intermittent current take-off storage batteries charge capacity has larger value, than at high and continuous loads. Time relay in portable radio stations power supply device circuit performs storage batteries switching, increasing discharge time of each storage battery of device, which allows to increase service life of storage batteries by 10 % and thereby prolonging portable radio station continuous operation duration.

EFFECT: proposed device has low power consumption.

1 cl, 1 dwg

Description

The present invention relates to the electrical industry and communications, and can be used as a device to provide reliable DC power to wearable radio stations, vehicles, etc.

A power supply device is known that contains rechargeable batteries and electronic keys connected to them [Khrustalev, D.A. Batteries [Text]. - M .: Emerald, 2003. - 102 p.].

In the known device, the batteries are used sequentially in time, as the discharge is disconnected from the receivers during the replacement. A disadvantage of the known device is the incomplete use of the charge resource due to the continuous loading of each battery separately.

Closest to the alleged invention is a power supply device containing rechargeable batteries, electronic keys connecting the batteries to the load [RU, patent for the invention No. 2417489, cl. H01M 10/48 2010 (prototype)].

The device is designed to power a radio station from two batteries simultaneously in continuous mode. The disadvantage of this device is that both batteries operate on load simultaneously in continuous mode. This does not allow the effective use of the potential of each battery of the device. This is due to the fact that with a larger and continuous load of the battery, the full capacity will be less than with a smaller and intermittent load.

The technical result is aimed at increasing the capacity of the batteries of power systems. The technical result is achieved by the fact that a time relay connected to the control inputs of the electronic keys, an AND logic element connected to the output by the control input of the time relay, are additionally introduced into the power supply device of the wearable radio stations, containing rechargeable batteries, electronic keys connecting the batteries to the load, voltage relays connected to the outputs of the batteries and to the inputs of the logical element "AND".

The drawing shows a functional diagram of a device for powering wearable radio stations (hereinafter devices).

The device comprises a first battery 1, a first voltage relay 3, a second battery 2, a second voltage relay 4, a solid-state relay 5, a logic element “AND” 6, a time relay 7, a load 8.

As the first 1 and second 2 batteries can be used Nickel-cadmium, silver-zinc or lithium-ion batteries having, respectively, the voltage ratings of 1.2 and 3.7V DC. Batteries 1 and 2 using a solid state relay 5 and a key K1.1 are alternately connected to the load.

Solid-state relay 5 contains the keys K2.1 and K2.2, which are made on the basis of field-effect transistors having control inputs that are connected to a time relay, and the power channel (source-drain) connects the batteries to the load through the key K1.1.

Voltage relay 3 and 4 of batteries 1 and 2 are designed to control the minimum permissible voltage value of the batteries. The voltage relay 3 and 4 are connected to the batteries and have an output signal that is supplied to the logic element "And" 6.

The logic element "And" 6 is connected by its inputs to the outputs of the voltage relay 3 and 4, and the output with the control input of the time relay.

Time relay 7 is designed to alternately connect the batteries 1 and 2 to the load. The time relay 7 is connected to the control input with the output of the logic element "And" 6, and the outputs to the control inputs of the keys K2.1 and K2.2 from the solid-state relay 5 and the key K1.1.

The device is designed to power wearable radio stations. The device operates as follows. When you turn on the device, the time relay 7 closes the key K2.1 from the solid-state relay 5. In this case, the first battery 1 is connected to the load 8. The voltage of the first battery 1 and the second battery 2 is controlled using voltage relay 3 and 4 of batteries 1 and 2. If the voltage If the accumulator is above the minimum allowable level, then a logic level of “1” is formed at the output of the voltage relay 3 and 4 and fed to the input of the logic element “I” 6, the output of which is connected to the time relay 7. In turn, the time relay 7 takes turns connection using the keys K2.1 and K2.2 on the solid-state relay 5 of the first battery 1 and the second battery 2 to the load 8. The switching time is set depending on the type of batteries and the operating mode of the load of the device 8. The battery disconnected from the load partially restores its capacity during the operation of another battery per load. In the process of discharging the batteries when the voltage of one of the batteries decreases below the set threshold level, the input of the logic element “AND” 6 receives a zero level, the time relay 7 is restarted, and the switching of the batteries is switched from the voltage relay 3 and 4 of the batteries 1 and 2. When discharging the first 1 and second accumulators 2 of the device and lowering the voltage below the set level, voltage relays 3 and 4 of accumulators 1 and 2 give a zero level to the input of the logic element “AND” 6. Logic element “I” 6 gives a command to de-energize the time relay 7. It in turn gives a command to open the key K 1.1 at the output of the device, disconnecting the device from the load, and preventing the battery of the device from discharging below the permitted minimum level.

A comparative analysis showed that when using batteries with less current extraction and when taking current with interruptions, the charge capacity of the batteries is more important than with large and continuous loads. The time relay 7 in the circuit of the power supply device of wearable radio stations switches the batteries, increasing the discharge time of each battery of the device, which allows to increase the battery life by 10 percent and thereby increase the continuous operation time of the wearable radio station. The proposed device has low power consumption.

TECHNICAL AND ECONOMIC SUBSTANTIATION ON THE SUGGESTED INVENTION “DEVICE FOR POWER SUPPLY OF PORTABLE RADIO STATIONS”

The reliability of the power supply of wearable radio stations determines the reliability of the radio station, as well as the reliability of the functioning of the radio communication system as a whole. To increase the reliability and service life of batteries of wearable radio stations, it is necessary to increase the efficiency of their work. In the known power supply devices of wearable radio stations, the used batteries operate at a common load at the same time, which does not allow the battery to be fully utilized. In the present invention, it is proposed to connect the batteries to the load in turn, using keys controlled by a time relay. The discharge time of each battery is doubled, which will allow more fully use the battery life. The proposed device is made using keys on solid-state relays with low power consumption. This will increase the capacity given by each battery by 10% compared with the prototype.

Claims (1)

A power device comprising batteries, electronic keys connecting the batteries to the load, characterized in that a time relay connected to the control inputs of the electronic keys is additionally introduced into the device, an AND logic element connected by the output to the control input of the time relay, voltage relay, connected to the outputs of the batteries and to the inputs of the logical element "AND".

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