RU180774U1 - EMERGENCY POWER SUPPLY OF MOBILE RADIO ELECTRONIC DEVICES FOR FIELD OF OPERATION - Google Patents

Abstract

The utility model relates to power supply systems of electric networks and distribution of electric energy, including battery charging circuits and power supply circuits from batteries. In particular, this device can be used as an emergency power source for mobile telecommunication systems and other equipment operating in the field. The source includes an uninterruptible power supply placed in the housing, a battery, according to a utility model, the output of an uninterruptible power supply is connected to the battery through a disconnect device battery charging current at low temperatures, which is controlled by a control controller, to the input of which tempera sensors are connected the battery and the controller, the second output of the uninterruptible power supply is connected to the input of the secondary power supply, to the output of which a DC load is connected, the third output of the uninterruptible power supply is connected to the AC load, while the lithium-iron-phosphate battery is used as the storage battery , the housing is dustproof and watertight shockproof. Ventilation openings are made in the housing, hermetically sealed with covers equipped with an automatic device opening / closing. The control controller contains external interfaces for connecting to a computer via wireless and / or wired communication channels, while a Bluetooth device can be used as a wireless communication line, and a USB device as a wired communication line. The source contains a sound notification device controlled by the control controller the onset of emergency situations. The claimed technical result: provision of portable, with small weight and size parameters, emergency power supply systems of equipment, work ayuschey under field conditions and in a wide range of temperatures from -40 ° C to + 50 ° C. 17 s.p. f-ly, 1 ill.

Description

Technical field

The utility model relates to power supply systems of electric networks and distribution of electric energy, including battery charging circuits and power supply circuits from batteries. In particular, this device can be used as an emergency power source for mobile telecommunication systems and other equipment operating in the field.

State of the art

It is known that gas generators, diesel generators, solar and wind generators and others, in combination with emergency power sources, are widely used as autonomous energy sources for mobile systems. Emergency (backup) power supply (IAP) sources allow not only to extend the operating time of the mobile complex in the event of a gas generator or diesel generator shutdown, but also allow the operation of mobile complexes in a wide temperature range typical for field conditions.

Emergency power sources (IAP) designed to ensure the operability of the equipment when the external power supply is disconnected, as a rule, consist of a stabilized AC-to-DC converter and an acid-lead sealed battery (battery) operating in a buffer with a converter.

Linear interactive IAPs with a sinusoidal output voltage are known for telecommunication equipment, for example, Intelligent II 600RM / RMLT. However, these sources are not intended for use in the field and are used in rooms in which the temperature and humidity levels necessary for the operation of the IAP are maintained.

The closest in technical essence is the IAP produced by Sibcontact LLC (http://sibcontact.com/), for example, type IBPS-12-600NM. The sinusoidal uninterruptible power supply (UPS) is an alternating current source, voltage 220 V, On-Line class with an external lead acid battery (battery). IBPS is intended: for uninterrupted power supply with a stabilized sinusoidal voltage and a frequency of 50 Hz of electrical equipment in the event of a power outage, for charging a battery from a charger, for use as a voltage inverter, and also for use as a voltage stabilizer.

The disadvantages of this emergency power source are:

1) the use of acid-lead batteries, which significantly increase the overall dimensions of the IAP;

2) the inability to use IAP in the field;

3) lack of battery temperature control, which can lead to its failure due to overheating.

4) a narrow range of operating temperatures from 0 ° C to + 40 ° C, which does not allow the use of IAP at low temperatures.

Utility Model Disclosure

The objective of the utility model is to create a portable emergency power source operating in the field and in a wide range of ambient temperatures from -40 ° C to + 50 ° C.

Effect: providing portable emergency power systems for electronic equipment operating in the field and at low temperatures without the need for special temperature control systems.

The problem is solved by creating an emergency power source including:

- serial on-line uninterruptible power supply;

- lithium-iron-phosphate (LiFePO4) rechargeable batteries (batteries), having a large specific capacity with lower weight and size parameters compared with lead-acid batteries;

- temperature control device for IAP and battery;

- a device for disconnecting battery charging at a negative temperature, while the load from the IAP is maintained;

- device emergency shutdown IAP at a temperature higher than the set;

- moisture-proof, mechanically durable housing that allows the use of IAP in the field - dust, rain, negative and high temperatures in the range from -40 ° C to + 50 ° C;

- battery heating device at a temperature below the operating temperature of the battery;

- interfaces for connecting the IAP to the computer via wired and / or wireless communication channels for transmitting information signals of the battery charge level, the temperature of the IAP and battery, charge current and discharge current.

Description of the design of the emergency power supply The functional diagram of the emergency power supply (IAP) for field conditions is illustrated in figure 1, where:

1 - serial uninterruptible power supply (UPS);

2 - rechargeable batteries (batteries);

3 - a secondary power source (IWP), which converts the AC voltage at the output of the UPS into a DC voltage;

4 - source control controller;

5 - AC voltage output;

6 - DC voltage output;

7 - device for disabling battery charging at low temperatures;

8 - battery temperature sensor;

9 - controller temperature sensor;

10 - wireless communication channel with a control computer;

11 - speaker for audible alarm;

12 - wired interface for connecting to a control computer;

13 - input external power;

14 - a normally closed thermal relay that disconnects external power when the IAP is overheated;

15 - fan control board;

16 - fans;

17 - proximity sensors;

18 - dust and water resistant shockproof housing.

19 - ventilation holes in the housing;

20 - cover vents;

21 - electric flat heater for heating the battery.

The main module of the IAP is an on-line uninterruptible power supply (1), which allows you to work both from an external AC source (13) and from a battery (2). Switching to battery power occurs when the UPS controller detects the absence of an external power source (13). The input power of the IAP (13) is supplied to the UPS (1) through the thermal relay (14), which disconnects the external power when the temperature of the IAP is higher than the set value. The UPS (1) also provides battery charging (2) with external power (13). The output voltage of an AC UPS is output (5), as well as to the input of a secondary power source (UPS) (3). IWP converts AC voltage to DC voltage, which is fed to the output of the IAP (6) to power systems requiring a constant voltage, for example 12 V or 24 V. The controller (4) provides general control of the IAP and the output of information signals to the control computer on wireless communication lines (10), and / or on wire communication lines (12). Data on the battery charge level, charge current and battery discharge current, temperature inside the IAP housing, battery temperature is transmitted to the computer. The charge current and discharge current are controlled using a current sensor installed on the controller board (4). The temperature of the IAP is controlled by a temperature sensor (9) located on the controller board (4), the battery temperature is controlled by a temperature sensor (8) located on the battery mounting structure (2). In the IAP housing (18), opposite the ventilation holes (19), there are fans (16), which are controlled by a control board (15) connected to the controller (4). The ventilation openings (19) are closed by sealed covers (20), next to which are proximity sensors (17) that monitor the presence (absence) of covers (20). Fixing the covers on the ventilation hole of the covers is carried out by the bayonet method or magnetic latches, which increases the efficiency of the operator in the field.

As a UPS, a sinusoidal on-line uninterruptible power supply can be used, for example, IBPS-12-600NM, manufactured by Sibcontact LLC (http://sibcontact.com/). This type of UPS allows you to connect external batteries of any capacity, which provides an unlimited increase in power reserve. If necessary, additional batteries are connected in parallel. For this case, IBPS-12-600NM has a programmable battery charge current of 5, 10, 15, 20, 30 A. In addition, IBPS is also a voltage stabilizer - it has an extended input voltage range from 110 V to 260 V, which allows In case of emergency, do not switch to external batteries. Another important advantage of IBPS-12-600NM is the availability of online mode. This function allows you to work in full automatic mode: as soon as external power appears - the equipment starts to work from the external network and vice versa, when the external network disappears - the equipment switches to battery operation.

As batteries, lithium-iron-phosphate (LiFePO4) batteries can be used, which have significantly better performance in terms of specific capacity and mass and size parameters compared to lead acid batteries, which ensures the implementation of a portable source. The peculiarity of these rechargeable batteries is that their charging can be carried out only at positive temperatures, and they can be operated (output the discharge current to the load) at a temperature not lower than -30 ° C. To maintain the temperature of the battery above -30 ° C, the battery is equipped with an electric flat heater (21). The heater is powered from the input external network and turns on when the battery temperature controlled by the temperature sensor (8) is below -30 ° C and turns off when the battery temperature is above -30 ° C. Turning on / off the heater is provided by the controller (4).

As a heater (21), micanite flat heaters (UralSpetsGrupp LLC), ceramic heaters (PK Marion LLC), steel flat heating elements (RU 2140134 from 07/21/1997, RU 170 028 from 12/12/2016) can be used.

As a secondary power source (3), a pulsed DC source (converter) can be used, the input of which receives an alternating voltage of 220 V. The output voltage of the IWP (12 V, 24 V or others) is determined by the load parameters.

The device for disabling battery charging (7) at negative temperatures can be implemented as installing a diode included in the battery charging circuit (2) in such a way as to block the battery charging current at a negative temperature of the IAP, which is monitored by a temperature sensor (9). In this case, the discharge current of the battery to power the load is saved. To turn on the battery charging current at positive temperatures, the diode is shorted by a normally closed relay (7) controlled by a controller (4), which opens when the temperature controlled by the sensor (9) decreases to negative values.

As wireless communication lines (10), Wi-Fi, Bluetooth, etc. devices can be used.

As a sound alert (11), piezoelectric emitters (speakers) can be used.

As wired communication lines (12), USB, LAN, etc. interfaces can be used.

As proximity sensors (17), for example, optical proximity sensors, capacitive, induction can be used.

The IAP housing (18), which provides protection against atmospheric precipitation, dust and mechanical strength of the IAP in the field, can be made of impact-resistant polypropylene with a heat-insulating layer.

For the convenience of the operator and improving the safety of operation of the IAP, the covers of the ventilation holes (20) can be equipped with an automatic opening device, for example, by means of an electromagnetic pusher or a rotary mechanism controlled by the controller (4) of the IAP.

The emergency power source operates as follows

The emergency power source is placed near electronic equipment, which must be provided with emergency power. External power (for example, from a gas generator) is connected to the input (13). To the voltage outputs of alternating current (5) and direct current (6), the load is connected (devices, including a control computer). The output interface (12) is connected to the control computer. If there is external power at the input (13), the UPS (1) provides its supply to the AC output (5) and to the input of the secondary power supply (3), the output from which is supplied to the DC output (6). In this case, the UPS (1) provides battery charging (2).

If there is no supply voltage at the input (13), the UPS (1) switches its input to battery power (2).

If the temperature of the battery (2) controlled by the sensor (8) decreases below zero, the controller (4) opens the relay contacts in the device (7), which leads to the interruption of the battery charging mode (2), while the discharge mode does not interrupt, thanks to the diode (see 7) included in the battery supply circuit (2). That is, the load power from the battery is saved. A temperature sensor (8) that monitors the temperature of the battery (2) is mounted on the metal substrate of the battery pack.

If the temperature of the IAP controlled by the thermal relay (14) is higher than the set one, for example, + 60 ° С, the thermal relay automatically opens the input network and the IAP stops working, which ensures the safe operation of the IAP.

To maintain the temperature of the battery above -30 ° C, the battery is equipped with an electric flat heater (21). The heater is powered from the input external network and turns on when the battery temperature controlled by the temperature sensor (8) is below -30 ° C and turns off when the battery temperature is above -30 ° C. Turning on / off the heater is provided by the controller (4).

If the temperature of the IAP controlled by the sensor (9) is exceeded, for example, above + 40 ° С, the controller (4) provides information signals to the control computer via a wired (12) and / or wireless (10) communication channel. In this case, the audible warning signal (11) is turned on and the fans (16) are turned on. Fans are turned on only if the covers (20) are removed, which is monitored by proximity sensors (17). With the covers closed and at temperatures above + 40 ° С, the controller turns on the warning signal (11) and provides the corresponding information signals to the control computer via communication channels (10) and / or (12). At temperatures below -10 ° C, the ventilation covers can be closed, since the internal temperature will not exceed the maximum permissible value at rated load.

If the temperature controlled by the sensor (9) drops below a predetermined one, for example -10 ° С, and if there are no covers (20), which is controlled by proximity sensors (17), the controller (4) gives an information signal to the control computer and turns on an audible warning signal (eleven).

So using in one device:

- lithium iron phosphate (LiFePO4) rechargeable batteries providing the necessary weight and size parameters of the system;

- systems for disconnecting the battery charging current at negative temperatures, ensuring long-term operation of the battery;

- ventilation systems of the IAP and emergency shutdown of the IAP at a temperature higher than the set temperature, ensuring safe operation of the IAP;

- battery heating systems at temperatures below the operating temperature of the battery;

- external interfaces for transmitting information signals to the control computer, which also increase the safety of operation of the IAP;

- dust and water resistant shockproof housing, providing work in the field,

provide the claimed technical result: providing portable, with small overall dimensions, emergency power supply systems for equipment operating in the field and in a wide temperature range from -40 ° C to + 50 ° C.

Claims (18)

1. An emergency power source for mobile radio electronic devices for field conditions, including an uninterruptible power supply located in the housing, a rechargeable battery, characterized in that the output of the uninterruptible power supply is connected to a lithium-iron-phosphate rechargeable battery through a device for disconnecting the battery charging current at negative temperatures which is controlled by a control controller, to the input of which the temperature sensors of the battery and the control controller are connected, the second output is the uninterruptible power supply unit is connected to the input of the secondary power source, to the output of which a DC load is connected, the third output of the uninterruptible power supply is connected to the AC load. 2. The source according to claim 1, characterized in that a normally closed thermal relay is connected to the input of the uninterruptible power supply to automatically turn off the source during overheating. 3. The source according to claim 1, characterized in that a pulse source (converter) of constant voltage can be used as a source of secondary DC power, the input of which receives an alternating voltage of 220 V. 4. The source according to claim 1, characterized in that the control controller contains external interfaces for connecting to a computer via wireless and / or wired communication channels. 5. The source according to claim 4, characterized in that a Bluetooth device is used as the wireless communication lines. 6. A source according to claim 4, characterized in that a USB device is used as a wired communication line. 7. The source according to p. 1, characterized in that it contains a sound alert device controlled by the control controller when emergency situations occur. 8. A source according to claim 7, characterized in that a piezoelectric emitter connected to a control controller is used as a sound notification device. 9. A source according to claim 1, characterized in that a heater controlled by a control controller is located on the battery for heating the battery at a temperature lower than the operating one. 10. The source according to p. 9, characterized in that the heater used is an electric flat heater powered by an external power source. 11. The source according to claim 1, characterized in that the source housing is made of impact-resistant polypropylene with an internal heat-insulating layer. 12. The source according to p. 11, characterized in that the housing contains ventilation holes that are hermetically sealed with covers. 13. The source according to p. 12, characterized in that opposite the ventilation holes are cooling fans controlled by a control controller. 14. The source according to p. 12, characterized in that the ventilation holes are equipped with a sensor for monitoring the presence / absence of covers. 15. The source according to claim 14, characterized in that optical proximity sensors are used as sensors for the presence / absence of covers. 16. The source according to p. 12, characterized in that the covers of the ventilation holes are equipped with an automatic opening / closing device controlled by a control controller. 17. The source according to p. 16, characterized in that the automatic opening / closing of the covers of the ventilation holes is carried out by means of an electromagnetic pusher or a rotary mechanism. 18. The source according to p. 1, characterized in that the housing is dustproof and moisture proof and shockproof.

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