KR20150019821A - Small type system for energy storage and distributed control - Google Patents

Abstract

The present invention relates to a compact energy storage/distribution control apparatus which guarantees to stably supply power to even an individual person, not to mention a company or a government, in an emergency situation such as a blackout and the like. The compact energy storage/distribution control apparatus includes an energy storage/distribution control part and a load control part. The energy storage/distribution control part is formed in a single package containing a battery; charges the battery using at least one among the commercial power at home, the power provided by a large-capacity DC power providing device, and the power generated by a small home generator; performs power supply operation using the commercial power at home when operated normally; and performs power supply operation using the power stored in the battery when operated in an emergency. The load control part supplies the power provided by the energy storage/distribution control part to at least one socket.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a small-sized energy storage and distributed control system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy storage technology, and more particularly, to a compact energy storage and distribution control apparatus capable of storing and supplying energy in units of houses or buildings, and in units of receptacles.

An ESS (Energy Storage System) is a technology that stores electricity in an electric power system (grid, grid) to supply power and energy when and where it is needed. In short, it is a collection of large-scale storage (container type) that integrates storage, usage, and quality efficiency into one product, such as a conventional secondary battery.

The ESS is a system that stores the generated power in an energy storage device and then increases the energy efficiency by supplying electric power when necessary.

 First, stable power supply is possible. At idle (nighttime), idle power is stored in an energy storage device, and when it is overloaded (daytime), power optimization is possible through load leveling. It is also possible to distribute the load through the load balancing of the power, and it can reduce capital investment such as the construction cost of the power plant and the installation cost of the transmission line. In addition, the power reserve can be secured, so that it can effectively cope with a power peak in the summer or winter, a large power outage, prevent a large-scale power outage, and be used as an emergency power.

Second, it is a technology that must exist to expand renewable energy. The renewable energy source, which is severely fluctuating in output depending on the external environment such as sunlight and wind power, can be made into high quality power by using energy storage device. If the ratio of renewable energy generation exceeds 10% of total generation without energy storage equipment, unstable generation of renewable energy can lead to unpredictable problems in the grid system.

Third, it is a technology that must be in place for smart grid implementation. It is a key component of the Smart Grid, a next-generation power grid that enables energy suppliers and consumers to exchange information in real time in both directions and optimize energy efficiency.

However, such an ESS is constructed and operated on a large scale, such as an area, a factory, etc., and it is difficult to receive the benefit from the ESS in a house or a small building. Nevertheless, the global power shortage is becoming increasingly serious, and as a result, unexpected power outages such as blackouts are increasing, there is a growing demand for companies and non-governmental individuals to build and operate ESS .

Accordingly, the present invention can provide a small-energy storage and distribution control device that ensures stable power supply in emergency situations such as power outage, even for non-corporates and non-governmental individuals.

In a compact energy storage and distribution control system implemented in a single package type according to an embodiment of the present invention, a small energy storage and distribution control system implemented as a single package having a battery, and power supplied by a home power supply, a large capacity direct current power supply device, Power generation operation is performed based on at least one of the power generated by the power generator and the power generated by the power generator, An energy storage and distribution controller for performing an operation; And a load controller for supplying power provided by the energy storage and distribution controller to at least one outlet.

Wherein the energy storage and distribution control unit comprises: a home power supply control unit for acquiring a part of the home power as a charging home power for a predetermined time; An AC-DC converter for converting the charging power into DC power and charging the battery; A DC-AC inverter for converting the battery power charged in the battery into AC power and outputting the AC power when the battery is in an emergency operation; A power supply controller for supplying the battery power converted into the AC power during the emergency operation; And a distributing board for distributing the power supplied from the power control unit to the load control unit.

And the digital-analogue inverter is operated in synchronization with the frequency of the home electric power.

And the power control unit includes a reverse voltage prevention circuit for suppressing a reverse voltage collision that occurs during power switching.

The system may further include a monitoring unit for monitoring the battery state and the power load.

And the power control unit may supply the battery and the small-sized self-generator together to supply the power supply amount when the battery power does not satisfy the power load amount.

Alternatively, if the battery power does not satisfy the power load, the power control unit may supply the battery power and the home power in association with each other.

In addition, the distribution board may further include a function of monitoring the battery state and the electric power load.

The distribution board further includes a protection circuit that can prevent an overcurrent, an overvoltage, and an arc from occurring.

The battery is comprised of a lithium battery and a supercapacitor.

As a means for solving the above problems, there is provided a compact energy storage and distribution control apparatus implemented as a single package that can be directly attached to an outlet according to another embodiment of the present invention, comprising: a battery composed of a lithium battery and a supercapacitor; An in-house power supply control unit which is supplied through the outlet for a preset time; An AC-DC converter for converting the domestic power obtained through the domestic power supply control unit into DC power and charging the battery; A DC-AC inverter for converting the battery power charged in the battery into AC power and outputting the AC power when the battery is in an emergency operation; And a power controller for supplying the battery power converted into AC power instead of the house power during an emergency operation; And a controller for controlling the energy storage and distribution controller.

The power control unit drives the small self-generator when the battery power falls below a predetermined value, and supplies the self-generated power of the small self-generator in conjunction with the battery power.

Also, the power control unit supplies the self-generated power of the small self-generator to the AC-DC converter instead of the home power.

The battery is comprised of a lithium battery and a supercapacitor.

In the present invention, the small energy storage and distribution control device is installed in a home or a small building or further connected to an outlet so as to drastically reduce an ESS operating unit.

In addition, it minimizes the possibility that the battery charging operation can not be normally performed due to the external environment by allowing the battery charging operation to be performed using an energy source such as a small-sized self-generator, a large capacity large-capacity DC power bank, .

In addition, by supplying the alternative power of the house power and performing the power dispersion control operation, unnecessary increase of the power consumption is prevented in advance.

1 is a diagram illustrating a compact energy storage and distribution control system according to an embodiment of the present invention.
2 is a diagram illustrating a compact energy storage and distribution control system according to another embodiment of the present invention.
FIG. 3 is a diagram illustrating a compact energy storage and dispersion control apparatus according to another embodiment of the present invention.
FIG. 4 is a view showing the appearance of a compact energy storage and dispersion control apparatus according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the present invention pertains. Only. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 illustrates a compact energy storage and distribution control system according to an embodiment of the present invention. The system of FIG. 1 has a feature suitable for residential application.

1, the small energy storage and distribution control system 100 of the present invention mainly includes an energy storage and dispersion control unit 110, a monitoring unit 120, and a load control unit 130, The storage and distribution control unit 110 includes a home power supply control unit 111, an AC-DC converter 112, a battery 113, a DC-AC inverter 114, a power control unit 115, a battery management system (BMS) And the load control unit 130 is implemented as an integrated package including a plurality of outlets 131 and a plurality of outlets 131, A plurality of outlet controllers 132 corresponding to the plurality of outlets 131, and the like.

The system of the present invention is a small-sized system that can be installed in a house, and when electric power is charged through a battery and an emergency situation occurs in which the electric power company 11 can not normally supply electric power to the house, .

In addition, by connecting the external devices such as the large-capacity direct-current power supply bank 12 and the small-sized self-generator 20 while supporting the existing wiring of the present invention as it is, it is possible to mix various energy sources. At this time, the small-sized self-generator 20 can be installed in a house, and a diesel (gasoline) power generation device 21, a solar power generation device 22, a wind power generation device 23, and the like can be applied.

Hereinafter, the functions and operations of the system of the present invention will be described in more detail with reference to FIG.

The home electric power supply control unit 111 receives the home electric power supplied by the electric power company 11 and supplies the received home electric power to the power control unit 115. When the electric power is supplied to the electric power control unit 115 at a predetermined time (for example, DC converter 112. The AC /

The AC-DC converter 112 converts the AC power supplied from the in-house power supply controller 111 into DC power and supplies the DC power to the battery 113 so that the battery 113 can perform a power charging operation. At this time, the AC-DC converter 112 converts the house power into DC power because the house current is AC power while the battery 113 is a DC power bank.

The system of the present invention can also include a large capacity direct current power supply device 12, a diesel (gasoline) power generation device 21, a solar power generation device 22, a wind power generation device 23, etc. A port capable of receiving power to be provided by the mobile communication terminal can be additionally provided. The battery 113 is used not only for the domestic power but also the electric power provided by the large capacity direct current power supply device 12, the diesel (gasoline) power generation device 21, the solar power generation device 22 or the wind power generation device 23 So that the charging operation can be performed.

For reference, the battery 113 may basically have only one DC power bank, but if necessary, it may have two DC power banks, one as a main bank and the other as a DC power bank. May also adopt a dual structure for use as an auxiliary bank. In addition to a lithium battery, which is a typical battery, a super capacitor is added to prevent shortening of battery life due to instantaneous discharge of load.

In addition, the in-home power supply control unit 111 includes a power line communication module (not shown). When the power utility 11 or the government agency issues a power cutoff command, the in-house power supply control unit 111 detects the power cutoff command and prohibits the use of in-

Then, the DC-AC inverter 114 re-converts the electric power charged in the battery 113 to AC power and supplies it to the power control unit 115. In response, the power control unit 115 generates a DC- And provides the battery power of the battery 114 to the distribution board 117.

At this time, since the DC-AC inverter 114 is provided to provide power to replace the in-house power, it operates in synchronization with the frequency of the in-house power. The power control unit 115 is provided with a reverse voltage prevention circuit to suppress a reverse voltage collision that occurs upon power switching between the home voltage and the battery power in advance.

Then, the distribution board 117 grasps the operation states of the plurality of electronic devices through the group line-by-group communication unit 119, and selectively supplies power only to the outlet 131 to which the electronic devices in the active state are connected. At this time, the distribution board 117 performs the power distribution control operation for each of the electronic apparatuses, but if necessary, a plurality of electronic apparatuses may be grouped into a plurality of groups, and the power distribution control operation may be performed on a group basis.

The monitoring unit 120 may monitor the overall operation status of the system. Particularly, while the power supply operation using the battery power is performed, the state of the battery 113 and the power load amount are monitored through the BMS 116.

As a result of the monitoring, if it is confirmed that the battery charge amount falls below the preset value or does not meet the power load amount, the power supplied to the plurality of electronic devices is sequentially cut off in accordance with the priority order through the distribution board 117 to lower the power load Alternatively, the small self-generator 20 may be additionally used in addition to the battery 113 to adjust the power supply. That is, the small self-generator 20 generates a power shortage.

In addition, the present invention preliminarily sets the use of alternate power, and then performs a power supply operation using the battery power instead of the host power at the corresponding time. That is, it is possible to optimize the power through the load leveling by charging the house power at a low nighttime where the power load is relatively small, and allowing the power load to be used during a relatively large daytime.

However, if the battery power alone can not cover the entire power load, it is possible to secure the stability of the power supply by supplying the battery power and the house power in conjunction with each other.

The outlet 131 can be implemented as a multi-type or a single type, and the outlet controller 132 is coupled to each of the outlets 131 to perform a standby power cutoff function and a device-to-device variance control function. The receptacle controller 132 may be implemented as an adapter in which one end is inserted into the socket 131 and the other end is coupled with a plug of an electronic device.

The receptacle controller 132 may also have a protection circuit that can prevent over-current, over-voltage, and arc from occurring in order to support circuit stabilization.

FIG. 2 illustrates a compact energy storage and distribution control system in accordance with another embodiment of the present invention. The system of FIG. 2 is suitable for small-scale building applications such as shopping malls and buildings.

2, the small energy storage and distribution control system 100 of the present invention removes the monitoring unit 120 of FIG. 1, in which the distribution board 211 of the energy storage and distribution control unit 210 is connected to the monitoring unit 120, (120).

That is, when the power supply operation using the battery power is performed, the distribution board 211 of FIG. 2 directly monitors the state of the battery 113 and the power load amount, and performs the power control operation as shown in FIG. 1 according to the monitoring result do.

In addition, the distribution board 211 of FIG. 2 additionally includes a protection circuit that can prevent an overcurrent, an overvoltage, and an arc from occurring, so that the circuit protection function is additionally provided. This is because the system of FIG. 1 is applied to houses and supplies only 3KW and 5KW, while the system of FIG. 2 is applied in a commercial complex and a small building to supply more power, that is, 10KW and 50KW, .

FIG. 3 is a block diagram of a compact energy storage and distribution control apparatus according to another embodiment of the present invention, which is implemented in a portable structure, and is capable of performing energy storage and supply operations in units of receptacles.

3, the small-energy storage and distribution control apparatus 300 of the present invention is implemented as a single package that can be directly mounted on an outlet, and includes a home power supply control unit 301, a switch unit 302, And includes a control unit 303, an AC power input unit 304, an AC-DC converter 305, a battery 306, a DC-AC inverter 307, a BMS 308 and a main control unit 309.

That is, the system of the present invention is directly mounted on a single socket 131 in the house to charge the domestic power provided through the single socket 131 and synchronize with the domestic power when a power failure or a power peak occurs, 131). ≪ / RTI >

The home power supply control unit 301 turns on the switch unit 302 to connect the outlet 131 and the AC power control unit 303 to each other so that the home electric power is supplied to the AC And supplies it to the power control section 303. Then, the house power is converted into DC power through the AC power input unit 304 and the AC-DC converter 305, and then supplied to the battery 306, and the battery 306 starts charging the DC power.

If a power failure occurs or an alternative power supply operation is requested by the user, the in-home power supply control unit 301 turns off the switch unit 302 to cut off the connection between the outlet 131 and the AC power supply control unit 303, The control unit 309 causes the DC-AC inverter 307 to convert the battery power to AC power and the AC power input unit 303 to supply it back.

The apparatus of the present invention is implemented in the form of an adapter as shown in FIG. 4, so that it can be inserted into the socket 131 and the plug of the electronic device can be coupled to the other side. That is, the device of the present invention allows the electronic device to be connected to the socket 131 through itself, and the home voltage inputted through the socket 131 is supplied to the electronic device as it is during normal operation, Thereby allowing the battery power of the device 300 of the present invention to be supplied to the electronic device instead of the power. As a result, the electronic device coupled to the device of the present invention can always receive the desired power stably regardless of whether or not a power failure occurs.

The main controller 309 of the present invention monitors the battery condition through the BMS 308 and drives the small self-generator 20 when the battery charge amount falls below a preset value, To be generated. That is, the small self-generator 20 supplies the self-generated power and the battery power in conjunction with each other, thereby adjusting the required power amount.

In addition, if necessary, the battery 306 may be supplied with power generated through the small self-generator 20 to the battery 306 so that the battery 306 can perform the charging operation using the power of the small self-generator 20. In such a case, the device 300 of the present invention can perform the charging operation even when it is not connected to the socket 131, thereby achieving improved portability.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (14)

In a compact energy storage and distribution control system implemented in a single package,
A battery is provided in a single package, and the battery is charged using at least one of the power supplied by the home power supply, the power supply provided by the large capacity DC power supply, and the power generated by the small self-generator, An energy storage and distribution controller for performing a power supply operation based on the house power and performing a power supply operation based on the electric power charged in the battery during an emergency operation; And
And a load controller for supplying electric power provided by the energy storage and distribution controller to at least one outlet. 2. The apparatus of claim 1, wherein the energy storage and distribution controller
A home electric power supply control unit for acquiring a part of the home electric power for charging home electric power for a preset time;
An AC-DC converter for converting the charging power into DC power and charging the battery;
A DC-AC inverter for converting the battery power charged in the battery into AC power and outputting the AC power when the battery is in an emergency operation;
A power supply controller for supplying the battery power converted into the AC power during the emergency operation; And
And a distribution board for distributing and providing the power supplied by the power control unit to the load control unit. 3. A digital-to-analog converter as claimed in claim 2,
And is operated in synchronism with the frequency of the home electric power. 3. The apparatus of claim 2, wherein the power control unit
And a reverse voltage prevention circuit for suppressing a reverse voltage collision that occurs during power switching. 3. The method of claim 2,
And a monitoring unit for monitoring the battery state and the power load. 6. The apparatus of claim 5, wherein the power control unit
Wherein the battery and the small-sized self-generator are used together to supply a power supply amount when the battery power does not satisfy the power load amount. 4. The apparatus of claim 3, wherein the power control unit
And supplies the battery power and the household power in conjunction with each other when the battery power does not satisfy the power load. 3. The apparatus of claim 2, wherein the distribution board
Further comprising a function of monitoring the battery state and the power load. 9. The apparatus of claim 8, wherein the distribution board
And a protection circuit capable of preventing an overcurrent, an overvoltage, and an arc from occurring. The battery pack according to claim 1, wherein the battery
A lithium battery, and a supercapacitor. In a compact energy storage and distribution control device implemented in a single package form that can be directly mounted to an outlet,
A battery consisting of a lithium battery and a super capacitor;
An in-house power supply control unit which is supplied through the outlet for a preset time;
An AC-DC converter for converting the domestic power obtained through the domestic power supply control unit into DC power and charging the battery;
A DC-AC inverter for converting the battery power charged in the battery into AC power and outputting the AC power when the battery is in an emergency operation; And
A power control unit for supplying the battery power converted into AC power instead of the house power during an emergency operation; The energy storage and distribution control system comprising: 12. The apparatus of claim 11, wherein the power control unit
Wherein the small self-generator is driven when the battery power falls below a preset value, and the self-generated power is supplied to the small self-generator in conjunction with the battery power. 12. The apparatus of claim 11, wherein the power control unit
And the small self-generator supplies the self-generated power to the AC-DC converter instead of the in-house power. 12. The battery pack of claim 11, wherein the battery
A lithium battery, and a supercapacitor.

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