KR101207142B1 - UPS using Li-polymer battery - Google Patents

Abstract

PURPOSE: An uninterruptable power supply using a lithium polymer battery is provided to effectively and stably operate facilities by facilitating additional power supply using solar energy. CONSTITUTION: A battery controller(120) controls the operation of a lithium polymer battery module(110). A source breaker cuts off power supply. An automatic recovery module automatically recovers the source breaker by generating a test signal. The battery controller facilitates remote operation using data communication. A lithium polymer battery includes a solar power supply unit for supplying power to the lithium polymer battery module.

Description

Uninterruptible power supply using lithium polymer battery {UPS using Li-polymer battery}

The present invention relates to an uninterruptible power supply (UPS) using a lithium polymer (Li-polymer) battery, and more particularly, the convenience and efficiency of use through the adoption of a lithium polymer battery and the provision of various additional functions. The present invention relates to an uninterruptible power supply using a lithium polymer battery having an improved lamp.

Uninterruptible power supply (UPS) refers to a power supply that does not have a power failure, it is provided in a facility that must be constantly supplied power, such as a semiconductor manufacturing equipment or a mobile communication repeater, it is possible to operate a stable equipment Perform important functions such as

To this end, a conventional uninterruptible power supply device has a configuration to store the power in the usual time using a lead-acid battery, such as charge and discharge, and to provide instantaneously the power stored in the event of an emergency such as a power outage.

However, such a normal uninterruptible power supply requires a manager's inspection from time to time, and in particular, in the case of a mobile communication repeater installed in a remote area, there have been many difficulties in its management.

Therefore, the present invention proposes an uninterruptible power supply that can be remotely managed and improved to provide various functional conveniences.

Patent No. 10-0954944 (Uninterruptible System Using Lithium Polymer Battery) Utility Model Registration No. 20-0419994 (Uninterruptible Power Supply with Improved Backup Battery)

Disclosure of Invention The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an uninterruptible power supply using a lithium polymer battery that improves convenience and efficiency by employing a lithium polymer battery and providing various additional functions. have.

The present invention for achieving the above object, In the uninterruptible power supply, Lithium polymer battery module; And a battery control unit for controlling the operation of the lithium polymer battery module, wherein the battery control unit provides an uninterruptible power supply using a lithium polymer battery, characterized in that remote operation using data communication is possible.

The uninterruptible power supply using the lithium polymer battery of the present invention may further include a solar power supply for supplying power to the lithium polymer battery module.

In this case, the lithium polymer battery module may be provided with a bidirectional inverter for enabling selective power supply from the solar power supply unit or a normal AC power source.

In addition, the battery control unit of the present invention, characterized in that for discharging operation of the lithium polymer battery at a time when the use of electricity is relatively increased, and to charge operation for the lithium polymer battery at a time when the use of electricity is relatively reduced. Can be. At this time, the discharge operation and the charge operation time period may be changed setting through a wired or wireless terminal for management.

On the other hand, the uninterruptible power supply using the lithium polymer battery of the present invention, may be provided with a power circuit breaker for shutting off the power supply to the lithium polymer battery when an overcurrent, short circuit or short circuit occurs, the power circuit breaker is applied It may be desirable to have a response rate of 4 milliseconds to 18 seconds in response to the current.

The present invention may further include an automatic recovery module for generating a test signal to determine whether the abnormal state persists when the power supply is interrupted by the power breaker, and automatically recovering the power breaker when it is determined that there is no abnormality. Can be.

The automatic recovery module applied to an embodiment of the present invention, the power supply unit; A check unit for generating a test signal to determine whether an abnormal state is continued; A driving motor for restoring a cutoff switch of the power breaker when it is determined that there is no abnormality by the check unit; And it may be configured to include a control unit for controlling the drive motor.

The present invention as described above has the following effects.

(1) By employing a lithium polymer battery for the uninterruptible power supply, various effects such as miniaturization, light weight, and overall performance can be provided.

(2) The battery control unit (BMS module) of the lithium polymer battery can be remotely controlled through TCP / IP and the like, and the battery can be charged by avoiding high power demand. It can provide cost savings.

(3) The power supply using solar energy can be additionally provided in addition to the normal AC power supply, thereby providing the effect of enabling efficient and stable operation of the facility.

(4) When the operation of the equipment is interrupted by the operation of the power breaker, it is possible to restore the original condition by operating a remotely controllable automatic recovery module, thereby improving convenience of use and time / cost efficiency. It can provide various effects such as being able to.

1 is an explanatory view showing a schematic configuration of an uninterruptible power supply using a lithium polymer battery according to an embodiment of the present invention.
2 is an explanatory diagram schematically showing a power supply system of an uninterruptible power supply device according to an embodiment of the present invention.
3 is an exemplary diagram for describing an operating state of an uninterruptible power supply device according to an embodiment of the present invention.
4 is an explanatory diagram showing a schematic configuration of an automatic recovery module provided in the uninterruptible power supply device according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

It is to be understood that the following specific structure or functional description is illustrative only for the purpose of describing an embodiment in accordance with the concepts of the present invention and that embodiments in accordance with the concepts of the present invention may be embodied in various forms, It should not be construed as limited to the embodiments.

The embodiments according to the concept of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all changes, equivalents and alternatives included in the spirit and scope of the present invention.

The terms first and / or second etc. may be used to describe various components, but the components are not limited to these terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element being referred to as the second element, The second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions for describing relationships between components, such as "between?" And "immediately between?" Or "adjacent to?" And "directly adjacent to?", Should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. It is to be understood that the terms such as " comprises "or" having "in this specification are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. Do not.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is an explanatory view showing a schematic configuration of an uninterruptible power supply using a lithium polymer battery according to an embodiment of the present invention.

Referring to FIG. 1, an uninterruptible power supply device 100 using a lithium polymer battery according to an embodiment of the present invention may include a battery module 110 using a lithium polymer battery, a battery control system (BMS) 120, and It can be seen that including the DC / AC inverter 130 and the like.

Lithium polymer battery is a rechargeable battery that uses a gel-type polymer as an electrolyte. The separator between the negative electrode and the positive electrode functions as an electrolyte for ion conduction, that is, an electrolyte, in addition to the separation of the electrodes in the lithium ion battery. It is a battery. Such lithium polymer batteries have the advantage of being able to be continuously charged and discharged for a long time without a separate power supply.

The uninterruptible power supply device 100 according to the embodiment of the present invention using such a lithium polymer battery may be configured to be particularly applicable to a mobile communication repeater, and the like. While input through CH1) and normally supplied to the facility through channels 2 (CH2 and CH2 '), some are converted through the DC / AC inverter 130 and then charged to the battery module 110. When an emergency situation such as a power failure occurs and the power supply through the channel 1 CH1 is not performed, the power charged in the battery module 110 is converted through the DC / AC inverter 130 and then the channel 2 By supplying to the facility through (CH2, CH2 '), it functions to ensure a stable power supply to the facility. In this process, all operations including charging and discharging of the battery module 110 are managed by the battery controller 120.

That is, the uninterruptible power supply 100 shown in FIG. 1 employs a lithium polymer battery module 110 as a battery module in a conventional uninterruptible power supply, and accordingly, a battery control unit for controlling operation of a lithium polymer battery ( It can be seen that having a configuration with 120).

At this time, the battery control unit 120 provided in the uninterruptible power supply 100 according to an embodiment of the present invention is made to enable remote operation using data communication. In other words, when the charge / discharge status data of the battery module 110 is transmitted to the plurality of uninterruptible power supply devices 100 by the battery control unit 120, the remote manager grasps and manages the data as a whole. For the uninterruptible power supply 100 that is determined to be there is to be able to take measures through remote control.

Here, the data communication with the battery controller 120 may be applicable to all data communication methods of wired and wireless using various types of terminals, but preferably, a data communication method using TCP / IP is applied. In this case, it is obvious that a separate converter for converting a Modbus protocol mounted on the uninterruptible power supply 100 into TCP / IP may be provided.

Here, the uninterruptible power supply device 100 using the lithium polymer battery according to an embodiment of the present invention may further include an auxiliary power supply using solar light, and the operation mode according to time to reduce the operating cost, etc. Not only can be set, but even if the power circuit breaker is operated by an overcurrent, a short circuit or a short circuit, it can be equipped with a variety of functions such as to enable the restoration of the equipment without direct visitor operation of the administrator. The above functions and configurations will be described in more detail with reference to the accompanying drawings.

The UP / DOWN BOOST circuit, which is not described in FIG. 1, may be implemented using a transformer or the like as a conventional uninterruptible power supply. In addition, although not separately shown in the drawings, it is obvious that an LED display window or the like for additionally displaying the state of the battery module and the like may be further provided.

2 is an explanatory view schematically showing a power supply system of an uninterruptible power supply device according to an embodiment of the present invention, the uninterruptible power supply device 200 shown in FIG. 2 is a solar cell in addition to the conventional AC power supply unit 220 It can be seen that the additional power supply unit 210 is used.

That is, in order to reduce the stable power supply and maintenance cost for the uninterruptible power supply 200, a solar power supply unit 210 using a solar cell, etc. may be additionally provided, in this case, the solar power supply unit 210. When the normal power supply is possible through the power is supplied through this, the normal solar cell is difficult to operate due to the effect of the weather, the power supply via the conventional AC power supply 220 represents a configuration.

To this end, the bi-directional inverter 240 is employed as shown in the figure, it functions to allow a selective connection between the plurality of power supply (210, 220) and the battery module 230 and the charging circuit 250 can be made. You can check it.

In this case, the photovoltaic power supply unit 210 may be applied to any conventional method of generating electricity using photovoltaic, and although not shown in the drawings, for example, may be replaced by a technology such as power supply using wind power. Of course.

In addition, it will be apparent to those skilled in the art that, unlike the drawings, the power supply unit including the solar power supply unit 210 may be configured without a combined use with the AC power supply unit 220.

Here, the battery module 230 is formed of a lithium polymer battery, and the battery module 230 and the charging circuit 250 have a configuration controlled by a battery controller (not shown).

3 is an exemplary diagram for describing an operating state of an uninterruptible power supply device according to an embodiment of the present invention.

The uninterruptible power supply device according to the embodiment of the present invention as shown in Figures 1 and 2, it is possible to set the charge and discharge time for the lithium polymer battery in order to reduce the operating cost and improve the operating efficiency.

In other words, as the demand for electricity increases, the facility is operated by using the power charged in the battery instead of using an external power source in a time when the power bill is relatively high, and instead, the battery is recharged during a low power bill such as at night. To make it possible.

Referring to FIG. 3, for example, if the power charge of 12 o'clock to 17 o'clock is relatively high and the power charge of 23 o'clock to 05 o'clock is relatively inexpensive, the battery is charged between 12 o'clock and 05 o'clock every day, By operating the facility at 17:00, it is possible to greatly reduce operating costs.

For example, assuming that the peak hourly electricity cost is 4,950 won per kW and the late night hourly electricity charge is 2,400 won per kW, the savings for 5 hours per day (see Figure 3) for a 100W utility power is 1 It can be confirmed that it reaches 460,000 won per year ([Reference Formula]).

[Reference Formula]

Power consumption: 100W × 5 hours × 365 days = 182kW (100% simultaneous load)

Peak power rate: 182 kW × 4,950 won / kW = 900,900 won

Midnight power fee: 182 kW × 2,400 won / kW = 436,800 won

Savings: 900,900 won-436,800 = 464,100 won

At this time, it is natural that the administrator can change and set the operation time and operation mode through the remote control of the battery controller, and thus, the operation cost can be reduced through the above functions as well as the national power demand. It can be seen that it can provide additional effects such as dispersion.

4 is an explanatory diagram showing a schematic configuration of an automatic recovery module provided in the uninterruptible power supply device according to an embodiment of the present invention.

Automatic recovery module 400, if the power circuit breaker (not shown) detects the occurrence of overcurrent, short circuit or short circuit to cut off the power supply, to restore the function of the facility even without direct visit operation by the administrator It is a component for.

In other words, the power breaker operated for the protection of the equipment is very often operated by momentary impulsive noise, and in this case, the communication repeater located in the remote area is directly operated by the administrator to restore the power disconnect switch. There was a problem such as having to operate the switch manually by visiting the site.

Accordingly, the automatic recovery module 400 can determine whether the power breaker is operated by a one-time cause such as an impulsive noise, or the like, through the generation of a test signal. If it is determined that the one-time cause as a result of the determination according to the test signal, it is possible to restore the power breaker by the automatic recovery module 400 only by the simple operation of the administrator at a remote site.

In this case, if the power breaker is made of an electronically operated switch, it can be simply restored to the original only by the signal generated from the automatic recovery module 400, but if configured by a switch of a physical method such as a conventional power breaker Separate driving means may be required and its configuration is illustrated in FIG. 4.

4, the automatic recovery module 400 provided in the uninterruptible power supply apparatus according to an embodiment of the present invention, the power supply unit 410, the inspection unit 420, the control unit 430 and the drive motor 440, etc. It can be seen that including the configuration.

The power supply unit 410 may be configured by an input such as a normal AC power input from the outside, it may be more preferably configured to receive a separate power supply independent of the uninterruptible power supply.

The checker 420 performs a function of determining whether or not an actual abnormality of the uninterruptible power supply is generated by generating a test signal. When it is determined by the checker 420 that the power breaker is operated by the one-time cause, the control unit 430 restores the switch back to the original state through the driving of the driving motor 440. Operation of the switch using the driving motor 440 or a connection structure between them may be possible in any conventional manner.

These features help to reduce inefficient tasks such as administrators' on-site inputs, reduce costs, and minimize power down time. It can be seen that various effects such as large accident prevention can be obtained.

In addition, by setting the response speed of the power circuit breaker to 4 milliseconds to 18 seconds so as to correspond to the applied current, the power circuit breaker may not respond to an error in a range where the equipment does not have a major problem such as instantaneous overcurrent. May be applicable. That is, in the case of a typical uninterruptible power supply, the response speed of the power circuit breaker is set to a small picosecond unit, so that it operates immediately in response to an instantaneous error such as impulsive noise. In the case of the power circuit breaker applied to the uninterruptible power supply according to the above, the response speed is set to have a maximum value within a range that does not overwhelm the equipment, thereby minimizing downtime of the equipment due to the operation of the power circuit breaker. . For example, when 10 times the rated current is applied, the reaction rate is 4 kV to 58 kV, and when 2 times the rated current is applied, the reaction rate is 1.4 to 18 seconds. May be set.

In the uninterruptible power supply apparatus according to the embodiment of the present invention described above, various components that are not separately described may be replaced by any component provided in various conventional uninterruptible power supplies. In addition, as described above, the LED display window for displaying the battery module in real time may be further provided.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

100, 200: uninterruptible power supply 110, 230: battery module
120: battery control unit 130: DC / AC inverter
210: solar power supply 220: AC power
240: bidirectional inverter 250: charging circuit
400: automatic recovery module 410: power unit
420: check unit 430: control unit
440: drive motor

Claims (8)

In the uninterruptible power supply,
Lithium polymer battery modules;
A battery controller for controlling an operation of the lithium polymer battery module;
A power breaker for shutting off the power supply in case of an overcurrent, a short circuit or a short circuit; And
When the interruption of the power supply is generated by the power breaker to generate a test signal to determine whether the abnormal state persists, and if it is determined that there is no error automatic recovery module for automatically recovering the power breaker;
The battery control unit is an uninterruptible power supply using a lithium polymer battery, characterized in that the remote operation using the data communication is possible.
The method of claim 1,
Uninterruptible power supply using a lithium polymer battery further comprises a solar power supply for supplying power to the lithium polymer battery module.
The method of claim 2,
An uninterruptible power supply using a lithium polymer battery, characterized in that the lithium polymer battery module is provided with a bidirectional inverter for enabling selective power supply from the solar power supply unit or a normal AC power supply.
The method of claim 1,
The battery control unit discharges and operates the lithium polymer battery at a time when the use of electricity is relatively increased, and charges the lithium polymer battery at a time when the use of electricity is relatively reduced. Uninterruptible power supply.
The method of claim 4, wherein
The discharge operation and charge operation time zone is an uninterruptible power supply using a lithium polymer battery, characterized in that the setting can be changed through the management wired or wireless terminal.
6. The method according to any one of claims 1 to 5,
The power breaker has a response time of 4 milliseconds (18) to 18 seconds in response to the applied current, the uninterruptible power supply using a lithium polymer battery.
delete The method according to claim 6,
The automatic recovery module, the power unit;
A check unit for generating a test signal to determine whether an abnormal state is continued;
A driving motor for restoring a cutoff switch of the power breaker when it is determined that there is no abnormality by the check unit; And
An uninterruptible power supply using a lithium polymer battery, characterized in that it comprises a control unit for controlling the drive motor.

Images