Miniaturized ESS device and operating system capable of providing emergency power within the facility

Abstract

The present invention relates to a miniaturized ESS device and operating system capable of providing emergency power within a facility, comprising: an energy storage unit that stores power received from a main power source or provides stored power to a load; a circuit breaker disposed between the main power source and the energy storage unit; a monitoring unit that measures state information including information on the voltage, current, and frequency of the main power source; and a building energy management unit that receives the state information measured by the monitoring unit and controls the operation of the circuit breaker and the energy storage unit, wherein the energy storage unit comprises: a housing having an internal receiving space; a battery case coupled to the inside of the housing and containing a battery cell; an input / output induction unit that guides the battery case to be inserted into the inside of the housing or moves it to be pulled out to the outside; and a position change unit that changes the position of the battery case by moving the battery case inserted into the inside of the housing in an up and down direction.

Description

Technology Field

[0001] The present invention relates to a miniaturized ESS device and an operating system capable of providing emergency power within a facility. Background Technology

[0002] Generally, an Energy Storage System is a system that increases energy efficiency by storing generated electricity in interconnected systems, including power plants, substations, and transmission lines, and then using it selectively and efficiently when needed.

[0003] Energy storage systems can lower power generation costs and reduce investment and operating costs required for expanding power facilities by leveling out electrical loads that fluctuate significantly by time of day and season, thereby improving the overall load factor and lowering electricity rates and saving energy.

[0004] Energy storage systems are broadly classified into physical energy storage and chemical energy storage based on the storage method. Physical energy storage methods include pumped-storage hydropower, compressed air storage, and flywheels, while chemical energy storage methods include lithium-ion batteries, lead-acid batteries, and NAS batteries.

[0005] Conventional Building Energy Management Systems (BEMS) utilizing energy storage systems adopted a method of supplying power by relying on a separate emergency generator installed in the event of a problem with the main power supply.

[0006] Korean Patent Application No. 10-2019-0078818 discloses an ‘emergency generator system and a method for controlling the same’.

[0007] According to a prior art patent, the invention relates to an emergency generator control system provided in a power supply system comprising a commercial power source (10), an emergency generator (20) that is provided separately from the commercial power source (10) and capable of generating power, a commercial load (30) to which power is supplied only when the commercial power source (10) is normal, an emergency load (40) to which power is supplied by the emergency generator (20) when the commercial power source (10) is abnormal, and a transformer (50) having one end connected to the commercial power source (10) by a high-voltage line and the other end connected to the commercial load (30) by a low-voltage line.

[0008] In addition, conventional technology has equipped not only an emergency generator but also an energy storage system (ESS) to assist in emergency power supply.

[0009] However, according to conventional technology, energy storage systems have only played an auxiliary role in stabilizing the power supply of the main power source, and there were problems in terms of cost and energy efficiency due to the separate operation of emergency generators.

[0010] In addition, since it is difficult to frequently check for malfunctions in the emergency generator (400) during normal operation, the energy storage device must be inspected frequently and continuously replaced when the battery cells age, but there was a problem in that the battery cell replacement work was difficult.

[0011] In addition, when overcharging occurs during the charging and discharging process of the battery cell or an internal short circuit occurs due to any factor, the temperature rises and gas is generated through a chemical reaction, and said gas can leak out of the secondary battery cells. A gas release port is formed to allow the gas to be released, but there was a problem in that water could enter through the gas release port and cause an explosion accident in the event of flooding. Prior art literature

[0012] Korean Patent Application No. 10-2019-0078818 The problem to be solved

[0013] The present invention was devised to resolve the problems of the prior art, and aims to provide a miniaturized ESS device and operating system capable of providing emergency power within a facility, which enables the operation of an energy storage device to supply power without interruption when the power supply from the main power source is cut off, facilitates the replacement of battery cells constituting the energy storage device, and prevents gas emission and moisture penetration into each battery cell to achieve optimal performance and improve safety. means of solving the problem

[0015] The objective of the present invention described above can be achieved by a miniaturized ESS operating system capable of providing emergency power within a facility, comprising: an energy storage unit that stores power received from a main power source or provides stored power to a load; a circuit breaker disposed between the main power source and the energy storage unit; a monitoring unit that measures state information including information on the voltage, current, and frequency of the main power source; and a building energy management unit that receives the state information measured by the monitoring unit and controls the operation of the circuit breaker and the energy storage unit, wherein the energy storage unit comprises: a housing having an internal receiving space; a battery case coupled to the inside of the housing and containing a battery cell; an input / output induction unit that guides the battery case to be inserted into the inside of the housing or moves it to be pulled out to the outside; and a position change unit that changes the position of the battery case by moving the battery case inserted into the inside of the housing in an up and down direction.

[0016] The above-mentioned inlet / outlet guide

[0017] A partition member comprising a vertical panel coupled to a guide groove formed longitudinally on the bottom surface of a housing, and a plurality of horizontal panels coupled horizontally to the vertical panel, such that a battery case is accommodated in each horizontal panel;

[0018] A driving source comprising a rod connected to the lower end of a vertical panel coupled to the above-mentioned guide groove and arranged horizontally to be drawn out or drawn in the front-rear direction, and a hydraulic cylinder connected to the rod and embedded in the lower part of the bottom surface of the housing;

[0019] It is characterized by including an air compressor that supplies or recovers hydraulic pressure to the above hydraulic cylinder to induce the withdrawal or retraction operation of the rod.

[0020] A cover that opens and closes is formed in the opening of the above housing, and

[0021] The inner surface of the above-mentioned cover is characterized by having a busbar formed thereon that contacts the power terminal of the battery case to allow power to flow.

[0022] The above position change part

[0023] A space is formed inside the vertical panel, a movable slot of a predetermined length is formed vertically on the side, and a projection formed at one end of the horizontal panel is coupled to the movable slot.

[0024] A driven gear and a driving gear are hinge-connected to the upper and lower parts of the internal space of the vertical panel, respectively, and

[0025] It includes a motor connected to the above-mentioned driving gear and a chain connecting the above-mentioned driving gear and the driven gear,

[0026] Axle couplings formed at regular intervals on the above chain, and

[0027] It is characterized by the fact that the protrusion of the above horizontal panel is coupled to the above shaft coupling member.

[0028] The above battery case has an exhaust hole formed on its upper surface, and

[0029] It includes an exhaust valve coupled to the exhaust hole and opening to discharge gas when the internal gas pressure of the battery case rises;

[0030] The above exhaust valve is

[0031] A valve body having upper and lower openings formed at the upper and lower portions respectively, a passage formed inside, and an annular step formed on the inner circumference of the internal passage having a through hole, and

[0032] A valve plug that is attached to the upper opening of a valve body with a plurality of connecting pins and coupled to have an exhaust slit, and

[0033] A spring coupled to the lower part of the valve plug, and

[0034] It is composed of a packing that is supported by the above spring and adheres to an annular step, and

[0035] It is characterized by allowing gas entering through the lower opening of the valve body to lift the packing and be discharged through the exhaust slit of the upper opening.

[0036] A battery case mounting part for mounting a battery case on the horizontal panel; including

[0037] The above battery case mounting part

[0038] It includes a rail having a predetermined length formed on the outer surface of a horizontal panel, and a fitting part formed on the lower part of the battery case and coupled to the rail.

[0039] It is characterized by moving the battery case along a rail by pushing or pulling it to retract or withdraw the battery case.

[0040] The aforementioned building energy management department,

[0041] A judgment unit that determines the operating status of the main power supply by comparing the status information measured by the above monitoring unit with a set reference value;

[0042] A parallel power supply operating unit connected to the above-mentioned judgment unit, which supplementarily provides power from the energy storage unit along with power provided from the above-mentioned main power supply source;

[0043] It is characterized by including an independent power supply operating unit that is connected to the above-mentioned judgment unit and provides power stored in the energy storage unit to a place of use when the power provided from the above-mentioned main power supply is cut off. Effects of the invention

[0045] According to the present invention, when the power supply from the main power source is cut off, the energy storage device is operated to ensure uninterrupted power supply, and the battery cells constituting the energy storage device are easily replaced. Furthermore, by blocking gas emission and moisture penetration into each battery cell, optimal performance can be achieved and safety can be improved. Brief explanation of the drawing

[0047] FIG. 1 is a configuration diagram showing a miniaturized ESS device and an operating system capable of providing emergency power within a facility according to the present invention. FIG. 2a is a perspective view showing the inflow operation of an 'input / output induction unit' in a miniaturized ESS device and operating system capable of providing emergency power within a facility according to the present invention. FIG. 2b is a perspective view showing the withdrawal operation of an 'input / output induction unit' in a miniaturized ESS device and operating system capable of providing emergency power within a facility according to the present invention. FIG. 3 is an exploded perspective view showing a miniaturized ESS device and operating system capable of providing emergency power within a facility according to the present invention. FIG. 4 is a bottom perspective view showing an 'input / output induction section' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention. FIG. 5 is a side cross-sectional view showing a 'position change part' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention. FIG. 6 is a cross-sectional view showing a 'position change part' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention. FIG. 7 is a cross-sectional view showing an 'exhaust valve' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention. Specific details for implementing the invention

[0048] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0049] Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed forms, and the scope of this specification includes modifications, equivalents, or substitutions that fall within the technical concept.

[0050] Terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, the first component may be named the second component, and similarly, the second component may be named the first component.

[0051] When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to or coupled with that other component, or that there may be other components in between.

[0052] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0053] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the embodiments pertain. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0054] In addition, when describing with reference to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiments, such detailed description is omitted.

[0055] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0056] In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0057] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the depicted details. Furthermore, in describing the present invention, if it is determined that a detailed description of related known technology may unnecessarily obscure the essence of the present invention, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it includes the plural unless specifically stated otherwise.

[0058] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0059] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0060] When elements or layers are referred to as "on" another element or layer, this includes cases where another layer or element is placed directly on top of or in between. Throughout the specification, the same reference numerals refer to the same components.

[0061] The size and thickness of each component shown in the drawings are illustrated for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

[0062] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0064] Among the attached drawings, FIG. 1 is a configuration diagram showing a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 2a is a perspective view showing the inflow operation of an 'input / output guide unit' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 2b is a perspective view showing the outflow operation of an 'input / output guide unit' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 3 is an exploded perspective view showing a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 4 is a bottom perspective view showing an 'input / output guide unit' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 5 is a side cross-sectional view showing a 'position change unit' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention; FIG. 6 is a front cross-sectional view showing a 'position change unit' in a miniaturized ESS device and operation system capable of providing emergency power within a facility according to the present invention. FIG. 7 is a cross-sectional view showing an 'exhaust valve' in a miniaturized ESS device and operating system capable of providing emergency power within a facility according to the present invention.

[0066] A miniaturized ESS device and operating system capable of providing emergency power within a facility according to the present invention,

[0067] Energy storage unit (ESS: Energy Storage System) (2) that stores power received from the main power supply source (1) or provides the stored power to the load;

[0068] A circuit breaker (Q) positioned between the main power supply (1) and the energy storage unit (2);

[0069] A monitoring unit (W) that measures status information including information on the voltage, current, and frequency of the main power supply (1); and

[0070] It is configured to include a building energy management unit (50) that receives status information measured from the monitoring unit (W) and controls the operation of the circuit breaker and the energy storage unit (2).

[0071] An emergency generator (E) is provided connected to a circuit breaker (Q), and the circuit breaker (Q) selectively controls the operation to implement an on-off operation for the emergency generator (E) or the energy storage unit (2).

[0073] The main power supply source (1) may include power plants, substations, transmission lines, etc.

[0074] When the main power source (1) is in a normal state, it can supply power to the energy storage unit (2) and the place of use (L1), and can also receive power from the energy storage unit (2).

[0075] The above energy storage unit (ESS) (2) comprises a housing (21) having an internal receiving space, a battery case (22) coupled to the inside of the housing (21) and containing a battery cell, an input / output guiding unit (6) that guides the battery case (22) to be inserted into the inside of the housing (21) or moved to be withdrawn to the outside, and a position changing unit (8) that moves the battery case (22) inserted into the inside of the housing (21) in an up and down direction to change the position of the battery case (22).

[0077] The energy storage unit (ESS) (2) includes a Power Conditioning System (PCS) (24) that converts electrical signals of power received from a main power source, a Power Management System (PMS) (25) that controls the operation of the PCS (24), and a battery cell that is charged and discharged by the PCS (24).

[0078] The PMS (25) can control the operation mode of the energy storage unit (2) using a control signal received from the monitoring unit (W).

[0079] Additionally, it may further include a Battery Management System (BMS) (26) that controls the charging and discharging operations of the battery cell, detects the state of the battery cell, and transmits the detected state to the PMS (25).

[0081] The energy storage unit (ESS: Energy Storage System) (2) is equipped with multiple battery cases (22) that accommodate battery cells, and can store power in multiple battery cases (22) and take it out and use it when needed.

[0082] The power stored in multiple battery cells is supplied to the main power source (1), and a portion of the power is stored in the energy storage unit (2) and used as needed.

[0083] The energy storage unit (2) may be configured with different sizes and weights depending on the storage capacity, but consists of a housing (21) formed in the shape of a rectangular box of approximately 120×80×20 cm (height×width×thickness) and a plurality of battery cases (22) stored inside the housing (21).

[0084] If overcharging occurs during the charging and discharging process of multiple battery cells or if an internal short circuit occurs due to any factor, the temperature rises and gas is generated through a chemical reaction, and said gas may leak out of the battery cells.

[0085] In the above situation, if multiple battery cells ignite, flames and smoke will be generated as multiple battery cells or other internal components burn.

[0086] At this time, if the smoke is not quickly discharged to the outside of the housing (21) while preventing the flame from leaking out, the risk of secondary accidents, such as multiple battery cells exploding, may increase.

[0087] To release smoke, an exhaust hole (220) is formed on the upper surface of the battery case (22), and an exhaust valve (27) is connected to the exhaust hole (220).

[0088] The exhaust valve (27) is designed to open and discharge gas when the internal gas pressure of the battery case (22) rises.

[0089] Referring to FIG. 7, the exhaust valve (27) is composed of a valve body (272) having upper and lower openings formed at the top and bottom respectively, a passage formed inside, and an annular step (273) having a through hole (2730) formed on the inner circumference of the inner passage, a valve plug (274) attached to the upper opening of the valve body (272) by a plurality of connecting pins (2741) to have an exhaust slit (2742), a spring (275) attached to the lower part of the valve plug (274), and a packing (276) supported by the spring (275) and in close contact with the annular step (273), so that gas flowing in through the lower opening of the valve body (272) lifts the packing (276) and is discharged through the exhaust slit (2742) of the upper opening.

[0091] The inlet / outlet guide (6) guides the battery case (22) to be inserted into the inside of the housing (21) or moved to be pulled out to the outside.

[0092] According to one example, the inlet / outlet guide (6) is configured to include a partition member (62), a driving source (64), and an air compressor (not shown).

[0093] The partition member (62) is composed of a vertical panel (622) coupled to a guide groove (210) formed longitudinally on the bottom surface of the housing (21), and a plurality of horizontal panels (624) coupled horizontally to the vertical panel (622), so that a battery case (22) can be stored in each of the horizontal panels (624).

[0094] A driving source (64) comprising a rod (642) connected to the lower end of a vertical panel (622) coupled to the above-mentioned guide groove (210) and arranged horizontally to be drawn out or drawn in in the front and rear directions, and a hydraulic cylinder (644) connected to the rod (642) and embedded in the lower part of the bottom surface of the housing (21);

[0095] It is configured to include an air compressor (not shown) that supplies or recovers hydraulic pressure to the above hydraulic cylinder (644) to cause the withdrawal or retraction operation of the rod (642).

[0097] In addition, an opening (28) that opens and closes is formed in the opening of the housing (21).

[0098] A busbar (282) may be formed on the inner surface of the cover (28) to allow power to flow by contacting the power terminal (223) of the battery case (22).

[0099] The power terminals (223) of a plurality of battery cases (22) are in contact with the busbar (282) to allow power to flow, and the power of the plurality of battery cases (22) can be supplied to the usage location (L1) connected to the busbar (282).

[0101] Referring to FIGS. 3 to 5, the position change part (8) is formed by forming a space inside the vertical panel (622), forming a movable slot (6222) of a predetermined length vertically on the side, and a projection (6241) formed at one end of the horizontal panel (624) being coupled to the movable slot (6222).

[0102] In the internal space of the vertical panel (622), a driven gear (G1) and a driving gear (G2) are hinge-connected to the upper and lower parts, respectively.

[0103] It also includes a motor (6225) connected to the above-mentioned driving gear (G2) and a chain (6223) connecting the above-mentioned driving gear (G2) and the driven gear (G1).

[0104] In the chain (6223), shaft coupling members (6223a) are formed at regular intervals, and the protrusions (6241) of the horizontal panel (624) are coupled to the shaft coupling members (6223a).

[0105] When the motor (6225) is turned on, the chain (6223) starts to rotate, and the horizontal panel (624) connected to the chain (6223) moves up or down along the movable slot (6222).

[0106] An upper limit switch and a lower limit switch are formed at the bottom and top of the movable slot (6222), respectively.

[0107] Through this, the height of the battery case (22) mounted on the horizontal panel (624) can be varied.

[0109] Meanwhile, the horizontal panel (624) includes a battery case mounting part (9) for mounting the battery case (22) to prevent the battery case (22) from falling off and to facilitate storage of the battery case (22).

[0110] The battery case mounting portion (9) includes a rail (91) having a predetermined length formed on the outer surface of a horizontal panel (624) and a fitting portion (92) formed on the lower part of the battery case (22) and coupled to the rail (91), thereby allowing the battery case (22) to be pushed or pulled to move along the rail (91) to move the battery case (22) in or out.

[0111] The fitting part (92) is formed with a rail groove (920) to be coupled to the rail (91), and is composed of a roller (922) formed on the inner circumference of the rail groove (920) that rolls in contact with the rail (91).

[0113] Meanwhile, the building energy management unit (50) comprises: a judgment unit (52) that determines the operating status of the main power supply source (1) by comparing the status information measured by the monitoring unit (W) with a set reference value; a parallel power supply operation unit (54) connected to the judgment unit (52) and configured to provide supplementary power from the energy storage unit (2) along with power provided from the main power supply source (1); and an independent power supply operation unit (56) connected to the judgment unit (52) and configured to provide power stored in the energy storage unit (2) to a user when the power provided from the main power supply source (1) is cut off.

[0114] The state information of the above-mentioned judgment unit (52) includes voltage, current, frequency, or phase information measured from the main power supply (1), and the judgment unit (52) can determine the operating state of the main power supply (1) by comparing the state information with a preset reference value.

[0115] The operating state of the main power supply (1) is determined to be normal when the state information is within a preset standard range, and

[0116] If the status information is below or above a preset standard range, it may be determined to be in a faulty state.

[0117] When the connection between the main power supply (1) and the energy storage unit (2) is interrupted, the judgment unit (52) can control the energy storage unit (2) to operate at the operating voltage and operating frequency when the main power supply (1) is operating in a normal state.

[0119] Meanwhile, referring to FIGS. 8 and 9, it includes an attachment plate (32) attached to the outer surface of the housing (21) and a mounting part (215) having a hinge bracket (34) formed protruding from the attachment plate (32).

[0120] In addition, it includes a support member (5) that is hinge-connected to the hinge bracket (34) at one end and extends toward the ground to provide support.

[0122] The attachment plate (32) comprises a front panel (321) that is in close contact with a mounting portion (215) formed on the outer surface of the housing (21), and side panels (322) that are folded and formed on both sides of the front panel (321) and are in close contact with both sides of the housing (21), and a fixing member (33) formed on the side panels (322) and fixed to the outer surface of the housing (21).

[0124] After the user installs the attachment plate (32) at an appropriate location on the housing (21), the fixing member (33) is attached.

[0125] The above fixing member (33) is configured to include a contact plate (331) coupled to an attachment plate (32), a bolt shaft (332) that is connected through the contact plate (331) and coupled through it, and a nut that is fastened to the other end of the bolt shaft (332).

[0126] Therefore, by tightening or loosening the nut to rotate the bolt shaft (332), the contact plate (331) can be attached to or separated from the attachment plate (32), thereby enabling fixed or separated operation.

[0128] The support member (5) is formed in the shape of a rod having a predetermined length, and one end of the support member is connected to the hinge bracket (34) of the mounting part (215) and can be rotated by an angle adjuster (57).

[0129] The angle adjuster (57) is connected to the rod (573) of the electric motor (572) connected to one side of the support (5), and the electric motor (572) is connected to the mounting part (215) provided in the housing (21), thereby enabling the folding operation of the support (5) and the setting of the angle of the support.

[0130] That is, when the electric motor (572) of the angle adjuster (57) is driven and the rod (573) is pulled out, the support (5) rotates downward and unfolds, and conversely, when the rod (573) is pulled in, the support (5) rotates upward and folds.

[0132] The angle adjuster (57) includes an electric motor (572) having one end hinged to a hinge bracket (216) formed in the mounting portion (215) of the housing (21), and a rod (573) formed at the other end of the electric motor (572) and hinged to a support (5) to operate for pulling out or pulling in.

[0133] Therefore, the rod (573) is pulled out or retracted by the driving of the electric motor (572), thereby rotating the support (5) to adjust the angle and supporting the housing (21) more stably.

[0135] Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

[0136] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below. Explanation of the symbols

[0137] 1 : Main power source 2 : Energy storage unit Q : Circuit breaker W : Monitoring unit E : Emergency Generator L1 : Usage 5 : Building Energy Management Department 6 : Inlet / Outlet Guidance Department 9 : Battery case mounting section 50 : Building energy management section 52: Judgment unit 54: Parallel power supply operating unit 56 : Independent power supply operating part 62 : Partition member 64 : Driving source 91 : Rail 92 : Insert part 922 : Roller

Claims

Claim 1 An energy storage unit that stores power received from a main power source or provides the stored power to a load; a circuit breaker disposed between the main power source and the energy storage unit; a monitoring unit that measures status information including information on the voltage, current, and frequency of the main power source; and a building energy management unit that receives the status information measured by the monitoring unit and controls the operation of the circuit breaker and the energy storage unit; wherein the energy storage unit comprises: a housing having an internal receiving space; a battery case coupled to the interior of the housing and containing a battery cell; and an input / output guide unit that guides the battery case to be inserted into the interior of the housing or moves it to be withdrawn to the outside. The device comprises: a position changing unit that moves a battery case inserted inside the housing in an upward and downward direction to change the position of the battery case; wherein the inlet / outlet guiding unit comprises a vertical panel coupled to a guiding groove formed longitudinally on the bottom surface of the housing and a plurality of horizontal panels coupled horizontally to the vertical panel, so that a battery case is stored in each horizontal panel; a driving source composed of a rod connected to the bottom of the vertical panel coupled to the guiding groove and arranged horizontally to be pulled out or pulled in in the front-rear direction, and a hydraulic cylinder connected to the rod and embedded in the lower part of the bottom surface of the housing; and an air compressor that supplies or recovers hydraulic pressure to the hydraulic cylinder to induce the pulling out or pulling in operation of the rod.It includes, wherein an opening of the housing is formed with an opening that opens and closes, and a busbar is formed on the inner surface of the cover to contact the power terminal of the battery case to allow power to flow; the position-changing part is formed such that a space is formed inside the vertical panel, a vertically elongated slot of a predetermined length is formed on the side, and a projection formed at one end of the horizontal panel is coupled to the elongated slot; a driven gear and a driving gear are hinge-coupled to the upper and lower parts, respectively, of the internal space of the vertical panel; it includes a motor connected to the driving gear and a chain connecting the driving gear and the driven gear; shaft coupling members formed at regular intervals on the chain and a projection of the horizontal panel is coupled to the shaft coupling members; the battery case has an exhaust hole formed on its upper surface and is coupled to the exhaust hole, and includes an exhaust valve that opens to discharge gas when the internal gas pressure of the battery case rises; and the exhaust valve has upper and lower openings formed on its upper and lower parts, respectively, and a passage is formed inside, and on the inner circumference of the internal passage A miniaturized ESS operating system capable of providing emergency power within a facility, comprising: a valve body having an annular step formed with a through hole; a valve plug attached to an upper opening of the valve body by a plurality of connecting pins and coupled to have an exhaust slit; a spring coupled to the lower part of the valve plug; and a packing supported by the spring and in close contact with the annular step, wherein gas introduced through the lower opening of the valve body lifts the packing to be discharged through the exhaust slit of the upper opening, and a battery case mounting part for mounting a battery case on the horizontal panel; wherein the battery case mounting part includes a rail having a predetermined length formed on the outer surface of the horizontal panel and a fitting part formed on the lower part of the battery case and coupled to the rail, and wherein the battery case is pushed or pulled to move along the rail to retract or retract the battery case. Claim 2 delete Claim 3 delete

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