Supercapacitor-based energy storage apparatus for elevator and method thereof

Abstract

The present invention discloses a supercapacitor-based energy storage device for an elevator and a method thereof. Specifically, the present invention can manage energy in real time according to the elevator's operating state and improve the operational efficiency of the entire system by charging or discharging electrical energy generated by the elevator into a supercapacitor depending on the elevator's power generation operating state or electric power operation state.

Description

Technology Field

[0001] The present invention relates to a supercapacitor-based energy storage device for an elevator and a method thereof, and more particularly to a supercapacitor-based energy storage device for an elevator and a method thereof that charges or discharges electrical energy generated by an elevator into a supercapacitor depending on the power generation operation state or the electric operation state of the elevator. Background Technology

[0002] An elevator is a device that uses power to transport people or goods up and down in high-rise buildings.

[0003] Energy is generated by the ascent or descent of these elevators, but this energy is not being properly utilized. Prior art literature

[0004] Korean Patent Publication No. 10-2023-0141844 [Title: Energy Storage System Equipped with Elevator Lift System] The problem to be solved

[0005] The objective of the present invention is to provide a supercapacitor-based energy storage device for an elevator and a method thereof, which charges or discharges electrical energy generated by an elevator into a supercapacitor depending on the power generation operation state or the electric operation state of the elevator. means of solving the problem

[0006] An energy storage device based on a supercapacitor for an elevator according to an embodiment of the present invention may include: a control unit that links with an elevator on which the energy storage device based on a supercapacitor for an elevator is installed, and resets a plurality of parameters of the energy storage device based on a supercapacitor for an elevator according to the operating conditions of the elevator through the prior operation of the elevator, and determines whether it is in a power generation operating state or an electric operating state based on operating state information provided from the elevator according to the operation of the elevator; and a supercapacitor that links with the elevator according to the power generation operating state or the electric operating state, and charges electric energy or discharges the charged electric energy by control of the control unit.

[0007] As an example related to the present invention, the operation status information includes power generation operation status information or electric motor operation status information, wherein the power generation operation status information includes cases where the elevator ascends when the load is below a preset minimum load or where the elevator descends when the load is above a preset maximum load, and the electric motor operation status information may include cases where the elevator descends when the load is below a preset minimum load or where the elevator ascends when the load is above a preset maximum load.

[0008] An energy storage method based on a supercapacitor for an elevator according to an embodiment of the present invention may include: a step of resetting a plurality of parameters of the energy storage device based on a supercapacitor for an elevator according to the operating conditions of the elevator through prior operation of the elevator by a control unit in conjunction with an elevator in which the energy storage device based on a supercapacitor for an elevator including the control unit is installed; a step of determining whether the elevator is in a power generation operating state or an electric power operating state based on operating state information provided from the elevator by the control unit according to the operation of the elevator; and a step of charging electric energy through a supercapacitor or discharging charged electric energy by the control unit in conjunction with the elevator according to the power generation operating state or the electric power operating state.

[0009] As an example related to the present invention, the step of resetting a plurality of parameters of the supercapacitor-based energy storage device for an elevator according to the operating conditions of the elevator comprises: a process of connecting to the terminals of the DC bus of the inverter by means of a plurality of connection terminals when a preset time has elapsed after the power of the elevator is cut off or when the DC bus voltage of the inverter configured in the elevator drops below a preset reference voltage; a process of setting the elevator to a preset inspection mode and, after turning on the power of the elevator, turning on the power of the supercapacitor-based energy storage device for the elevator by the control unit after a preset time has elapsed; and a process of checking whether the DC bus voltage displayed on the display unit matches the voltage measured by the multimeter configured in the supercapacitor-based energy storage device for the elevator when another preset time has elapsed after the power of the supercapacitor-based energy storage device for the elevator has been turned on by the control unit. And when, as a result of the above verification, the DC bus voltage displayed on the display unit does not match the voltage measured by the multimeter configured in the supercapacitor-based energy storage device for the elevator, the control unit may identify that there is a problem with the parameter setting, generate alarm information to guide that technical consultation with the manufacturer should be requested, and display the generated alarm information.

[0010] As an example related to the present invention, the process may further include: when the DC bus voltage displayed on the display unit matches the voltage measured by a multimeter configured in the supercapacitor-based energy storage device for the elevator as a result of the above verification, the control unit confirms that the supercapacitor-based energy storage device for the elevator is in a normal operating state, generates information indicating that the supercapacitor-based energy storage device for the elevator is operating normally, and displays the generated information indicating normal operation; the process of setting the elevator to a preset automatic mode and, while the elevator is moving up and down normally, the control unit determines whether each of the preset parameters satisfies a reference value set for each parameter; when, as a result of the above determination, at least one of the plurality of parameters does not satisfy the reference value corresponding to that parameter, the control unit confirms that there is a problem with the parameter setting, generates alarm information to guide that a technical consultation should be requested from the manufacturer, and displays the generated alarm information; and when, as a result of the above determination, all of the plurality of parameters satisfy the reference values ​​set for each parameter, the control unit generates information indicating normal operation and displays the generated information indicating normal operation.

[0011] As an example related to the present invention, the step of charging or discharging electrical energy through the supercapacitor can be controlled such that, when the elevator is in a power generation operation state, the control unit switches the state of the supercapacitor-based energy storage device for the elevator to a charging state and controls the charging of the supercapacitor with electrical energy generated by the elevator, provided through a DC bus connected to the elevator.

[0012] As an example related to the present invention, the step of charging or discharging electrical energy through the supercapacitor may, when the elevator is in an electric operation state, switch the state of the supercapacitor-based energy storage device for the elevator to a power generation state by the control unit, and provide the electrical energy charged in the supercapacitor to the elevator through a DC bus connected to the elevator. Effects of the invention

[0013] The present invention has the effect of managing energy in real time according to the elevator's operating state and improving the operational efficiency of the entire system by charging or discharging electrical energy generated by the elevator into a supercapacitor according to the elevator's power generation operating state or electric operating state. Brief explanation of the drawing

[0014] FIG. 1 is a block diagram showing the configuration of a supercap-based energy storage system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a supercap-based energy storage device for an elevator according to an embodiment of the present invention. FIG. 3 is a figure showing an example of an internal stacked or internal tile-type supercap-based energy storage device for an elevator according to an embodiment of the present invention. FIG. 4 is a figure showing an example of a plurality of terminals configured in a supercapacitor-based energy storage device for an elevator according to an embodiment of the present invention. FIG. 5 is a figure showing an example of a display unit configured in a supercap-based energy storage device for an elevator according to an embodiment of the present invention. FIGS. 6 to 10 are drawings illustrating examples of configurations for offline firmware upgrades of an energy storage device based on a supercapacitor for an elevator according to an embodiment of the present invention. FIGS. 11 and 12 are flowcharts illustrating an energy storage method based on a supercapacitor for an elevator according to an embodiment of the present invention. Specific details for implementing the invention

[0015] It should be noted that the technical terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Furthermore, unless specifically defined otherwise in this invention, the technical terms used in this invention should be interpreted in the sense generally understood by those skilled in the art to which this invention pertains, and should not be interpreted in an overly broad or overly narrow sense. Additionally, if a technical term used in this invention is an incorrect technical term that fails to accurately express the concept of the invention, it should be replaced with a technical term that can be correctly understood by those skilled in the art. Moreover, general terms used in this invention should be interpreted according to their prior definitions or the context, and should not be interpreted in an overly narrow sense.

[0016] Furthermore, singular expressions used in the present invention include plural expressions unless the context clearly indicates otherwise. Terms such as "composed of" or "comprising" in the present invention should not be interpreted as necessarily including all of the various components or steps described in the invention, and should be interpreted as meaning that some of the components or steps may not be included, or that additional components or steps may be included.

[0017] Additionally, terms including ordinal numbers, such as first, second, etc., used in the present invention may be used to describe components, but the components should not be limited by the terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0018] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Identical or similar components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0019] Furthermore, in describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such descriptions could obscure the essence of the invention. Additionally, it should be noted that the attached drawings are intended only to facilitate an understanding of the concept of the present invention and should not be interpreted as limiting the concept of the present invention.

[0020] FIG. 1 is a block diagram showing the configuration of a supercap-based energy storage system (10) according to an embodiment of the present invention.

[0021] As illustrated in FIG. 1, the supercapacitor-based energy storage system (10) consists of an elevator (100) and a supercapacitor-based energy storage device (200) for the elevator. Not all components of the supercapacitor-based energy storage system (10) illustrated in FIG. 1 are essential components, and the supercapacitor-based energy storage system (10) may be implemented with more components than those illustrated in FIG. 1, or with fewer components.

[0022] Each of the above elevator (100) and the supercapacitor-based energy storage device (200) for the elevator may include a communication unit (not shown) for performing communication functions with other terminals, a storage unit (not shown) for storing various information and programs (or applications), a display unit (not shown) for displaying various information and program execution results, a voice output unit (not shown) for outputting voice information corresponding to the various information and program execution results, and a control unit (not shown) for controlling various components and functions of each terminal.

[0023] The above elevator (100) communicates with the above elevator's supercap-based energy storage device (200), etc.

[0024] In addition, the elevator (100) may be a variable voltage variable frequency (VVVF) elevator.

[0025] In addition, the elevator (100) is configured (or arranged / installed / formed) to move up and down in a vertical direction in an elevator shaft (not shown) configured in a vertical direction inside a building (not shown).

[0026] In addition, guide rails (not shown) are configured on a plurality of sides of the elevator (100), and a guide roller (not shown) is configured on one side of the elevator (100) so that the elevator (100) can move along the guide rails.

[0027] In addition, the elevator (100) is configured with a passenger space to carry users, luggage, etc. inside, and has sliding doors (not shown) configured so that the elevator (100) can be boarded or alighted at each floor of the building.

[0028] Additionally, the elevator (100) comprises a power supply unit (not shown) that provides power (or power source) necessary for lifting and lowering, a main rope (not shown) wound around the power supply unit to raise or lower the elevator (100), a power generation unit (not shown) that generates (or produces) electrical energy (or power) by rotating a motor (not shown) through the reciprocating motion of the main rope as it rises or falls, and an inverter (not shown) that converts the alternating current form of electrical energy generated (or produced) by the power generation unit into a direct current form and outputs it. Not all components of the elevator (100) are essential components; the elevator (100) may be implemented with more components than those described, or with fewer components. In this case, various known technologies required for the operation of the elevator (100) may be applied to the elevator (100), in addition to the components not described in the present invention.

[0029] In this way, the elevator (100) also generates (or produces) electrical energy (or power / electricity) as the elevator (100) rises or falls.

[0030] In addition, the elevator (100) performs a pre-setting operation in conjunction with the supercap-based energy storage device (200) for the elevator.

[0031] When a preset time (e.g., 5 to 10 minutes) has passed after the power to the elevator (100) is cut off, or when the DC bus voltage of an inverter (not shown) configured in the elevator (100) drops below a preset reference voltage (e.g., 25V), the elevator (100) connects the terminal of the DC bus of the inverter to a supercapacitor-based energy storage device (200) for the elevator.

[0032] That is, when a preset time (e.g., 5 to 10 minutes) has passed after the power of the elevator (100) is cut off, or when the DC bus voltage of the inverter configured in the elevator (100) drops below a preset reference voltage (e.g., 25V), the positive (+) (or positive terminal) and negative (-) (or negative terminal) of the DC bus of the inverter configured in the elevator (100) are respectively connected to a plurality of connection terminals (240) (or P+ terminal and N- terminal configured in the plurality of connection terminals (240)) included in the supercap-based energy storage device (200) for the elevator.

[0033] Additionally, an active signal line (not shown) configured in the elevator (100) is connected to a plurality of active signal terminals configured in a supercapacitor-based energy storage device (200) for the elevator.

[0034] In this way, the elevator (100) can be physically connected to the supercap-based energy storage device (200) for the elevator.

[0035] In addition, for the initial setup of the supercapacitor-based energy storage device (200) for the connected elevator, the elevator (100) is set to a preset maintenance state, and the power of the elevator (100) is turned on. At this time, the power on / off switching of the elevator (100) may be performed by a control unit (not shown) configured in the elevator (100) or by an administrator input (or administrator / operator selection / touch / control).

[0036] Additionally, the elevator (100) provides (or transmits) DC bus voltage (or voltage value), DC bus current (or current value), etc., to the supercapacitor-based energy storage device (200) for the elevator through a DC bus connected to an inverter, depending on the operation of the elevator (100).

[0037] In addition, for setting parameters of the supercapacitor-based energy storage device (200) for the connected elevator, the elevator (100) is set to a preset automatic state and moves up and down normally according to the power supply (or ascends and descends).

[0038] In this way, the elevator (100) can perform an initial setup process of the supercapacitor-based energy storage device (200) for the elevator by linking with the supercapacitor-based energy storage device (200) for the elevator.

[0039] Additionally, while the elevator (100) is operating normally, the elevator (100) checks the operating status of the elevator (100) and provides (or transmits) operating status information corresponding to the checked operating status to the supercap-based energy storage device (200) for the elevator. Here, the operating status information includes power generation operating status information, motor operation operating status information, etc. Additionally, the power generation operating status information includes cases where the elevator (100) rises when the load is below a preset minimum load, cases where the elevator (100) descends when the load is above a preset maximum load, etc. Additionally, the motor operation status information includes cases where the elevator (100) descends when the load is below a preset minimum load, cases where the elevator (100) rises when the load is above a preset maximum load, etc.

[0040] Additionally, when the elevator (100) is in a power generation operation state, the elevator (100) provides (or supplies) the electrical energy (or voltage / power) generated (or produced) through the power generation unit to the supercapacitor-based energy storage device (200) for the elevator via the DC bus.

[0041] Additionally, when the elevator (100) is in an electric operation state, the elevator (100) receives (or supplies) electrical energy (or voltage / power) that is being charged (or stored) in the supercapacitor-based energy storage device (200) for the elevator through the DC bus.

[0042] In addition, the elevator (100) uses the provided (or supplied) electrical energy (or voltage) to power the main power, auxiliary power, backup power, emergency light, etc., inside the elevator (100).

[0043] Additionally, when the elevator (100) is rising or falling in a state where the minimum load is exceeded or the maximum load is not, the elevator (100) is confirmed (or processed) to be in a normal operating state, and charging or supplying of electric energy through the generation of electric energy with the supercap-based energy storage device (200) for the elevator may be omitted.

[0044] The above-mentioned supercapacitor-based energy storage device (200) for the elevator communicates with the above-mentioned elevator (100), etc.

[0045] In addition, the supercap-based energy storage device (200) for the elevator is a device that is connected to the DC bus of the inverter in the elevator (100) and is an energy-saving device with a bidirectional three-phase parallel buck-boost converter as its core.

[0046] As illustrated in FIG. 2, the supercapacitor-based energy storage device (200) for an elevator is composed of a communication unit (210), a storage unit (220), a display unit (230), a plurality of connection terminals (P, N) (240), a ground terminal (250), a plurality of active signal terminals (260), a DC / DC converter (270), a supercapacitor (280), and a control unit (290). Not all components of the supercapacitor-based energy storage device (200) for an elevator illustrated in FIG. 2 are essential components, and the supercapacitor-based energy storage device (200) for an elevator may be implemented with more components than those illustrated in FIG. 2, or with fewer components.

[0047] As shown in FIG. 3, the supercap-based energy storage device (200) for the elevator can be configured as Type D shown on the left side of FIG. 3 and installed in the computer room associated with the elevator (100) (or internal stacked type / for machine room installation), or configured as Type P shown on the right side of FIG. 3 and installed in the shaft (or internal tile type / for machine room elevator wall installation).

[0048] As shown in FIG. 4, the supercapacitor-based energy storage device (200) for the elevator includes a plurality of terminals for providing CAN, control signals, ARD (alarm reset / disable) signals, etc.

[0049] In addition, the interior of the supercapacitor-based energy storage device (200) for the elevator is air-cooled and supports RS-485, CAN, and CAN-open communication interfaces.

[0050] In addition, the supercap-based energy storage device (200) for the elevator operates automatically in conjunction with the elevator (100).

[0051] In addition, the supercap-based energy storage device (200) for the elevator operates in an environment including ambient temperature and humidity (e.g., -20℃ to +60℃, relative humidity 90% or less, no condensation, etc.) and other usage conditions (e.g., altitude 2000m or less, no water vapor / harmful gas / dust, etc.).

[0052] The communication unit (210) communicates with any internal component or at least one external terminal through a wired / wireless communication network. At this time, the external terminal may include the elevator (100), a terminal (not shown), etc. Here, wireless internet technologies include Wireless LAN (WLAN), DLNA (Digital Living Network Alliance), Wibro (Wireless Broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed ​​Downlink Packet Access), HSUPA (High Speed ​​Uplink Packet Access), IEEE 802.16, Long Term Evolution (LTE), LTE-A (Long Term Evolution-Advanced), LTE-M (LTE-based maritime wireless communication), Wireless Mobile Broadband Service (WMBS), 5G network / 5G communication network, 6G network / 6G communication network, Wi-SUN (Wireless Smart Utility Network), NarrowBand-Internet of Things (NB-IoT), etc., and the communication unit (210) includes at least one wireless internet technology within the scope including internet technologies not listed above. Data is transmitted and received accordingly.In addition, short-range communication technologies may include Bluetooth, Bluetooth Low Energy (BLE), ANT, ANT+, Long Range (LoRa), RFID (Radio Frequency Identification), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Ultra Sound Communication (USC), Visible Light Communication (VLC), Wi-Fi, Wi-Fi Direct, Magnetic Secure Transmission (MST), Beacon, EnOcean, Near Field Magnetic Induction (NFMI), Z-WAVE, and SIGFOX. Furthermore, wired communication technologies may include Power Line Communication (PLC), USB, Ethernet, and Serial It may include serial communication, optical / coaxial cables, RS-485, CAN (Controller Area Network), etc.

[0053] In addition, the communication unit (210) can mutually transmit information with any terminal via a Universal Serial Bus (USB).

[0054] In addition, the communication unit (210) transmits and receives wireless signals to and from a base station, the elevator (100), the terminal, etc. on a mobile communication network built according to technical standards or communication methods for mobile communication (e.g., GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), CDMA2000 (Code Division Multi Access 2000), EV-DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed ​​Downlink Packet Access), HSUPA (High Speed ​​Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), 5G network / 5G communication network, 6G network / 6G communication network, etc.).

[0055] The above storage unit (220) stores various user interfaces (UI), graphic user interfaces (GUI), etc.

[0056] In addition, the storage unit (220) stores data and programs, etc., necessary for the operation of the supercap-based energy storage device (200) for the elevator.

[0057] That is, the storage unit (220) can store a number of applications (application programs or applications) that run on the elevator supercapacitor-based energy storage device (200), data for the operation of the elevator supercapacitor-based energy storage device (200), and commands. At least some of these applications may be downloaded from an external server via wireless communication. In addition, at least some of these applications may exist on the elevator supercapacitor-based energy storage device (200) from the time of shipment for the basic functions of the elevator supercapacitor-based energy storage device (200). Meanwhile, the applications may be stored in the storage unit (220), installed on the elevator supercapacitor-based energy storage device (200), and driven by the control unit (290) to perform the operation (or function) of the elevator supercapacitor-based energy storage device (200).

[0058] Additionally, the storage unit (220) may include at least one storage medium among Flash Memory Type, Hard Disk Type, Multimedia Card Micro Type, Card Type Memory (e.g., SD Memory, XD Memory, CF (compact flash) Memory, etc.), Stick Type Memory Stick, Magnetic Memory, Magnetic Disk, Optical Disk, RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory), OTPROM (one-time programmable ROM), Mask ROM, and Flash ROM. Additionally, the supercap-based energy storage device (200) for elevators may operate a web storage that performs the storage function of the storage unit (220) on the internet, or may operate in relation to said web storage.

[0059] The above display unit (or display unit) (230) can display various content, such as various menu screens, using a user interface and / or a graphic user interface stored in the storage unit (220) under the control of the control unit (290). Here, the content displayed on the display unit (230) includes various text or image data (including various information data) and menu screens, etc., including data such as icons, list menus, and combo boxes. Additionally, the above display unit (230) may be a touch screen.

[0060] Additionally, the display unit (230) may include at least one of a Liquid Crystal Display (LCD), a Thin Film Transistor-Liquid Crystal Display (TFT LCD), an Organic Light-Emitting Diode (OLED), a Flexible Display, a 3D Display, an e-ink Display, a Light Emitting Diode (LED), a beam projector, a goggle-type VR, a hologram, and a Head-Up Display (HUD). Here, when the display unit (230) is implemented as a HUD, the display unit (230) may be equipped with a projection module to output information through an image projected onto a windshield or window.

[0061] In addition, the display unit (230) may be implemented as a touch screen by forming a layered structure with a touch input unit (not shown) or by being formed as an integral unit.

[0062] Additionally, the display unit (230) may include a transparent display. The transparent display may be attached to a windshield or a window.

[0063] In addition, the transparent display can display a predetermined screen while having a predetermined transparency. To have transparency, the transparent display may include at least one of a transparent TFEL (Thin Film Electroluminescent), a transparent OLED (Organic Light-Emitting Diode), a transparent LCD (Liquid Crystal Display), a transparent transparent display, and a transparent LED (Light Emitting Diode) display. The transparency of the transparent display can be adjusted.

[0064] Additionally, as shown in FIG. 5, the display unit (230) is configured with a 4-bit LED display and four buttons on one side of the supercap-based energy storage device (200) for the elevator, thereby allowing the operating status of the energy storage device (200) to be checked and control parameters to be viewed and modified.

[0065] Here, the display parameters that can be checked in read-only mode through the display unit (230) are as shown in [Table 1] below.

[0066] cord explanation default value unit i Supercapacitor current (+charge, -discharge) / A A Bus current (+charge, -discharge) / A u Supercapacitor voltage / V U Bus voltage / V c Cumulative power savings / kWh E Last error information 0 - F Operating status when an error occurs 0 - r Bus voltage when an error occurs 0 V b Bus current when an error occurs 0 A d 3-phase sampling current when an error occurs 0 A

[0067] When the power of the supercapacity-based energy storage device (200) for the elevator is turned on, the overcapacity current is basically displayed on the display unit (230).

[0068] In addition, the operator (or manager / user) of the above-mentioned supercapacitor-based energy storage device (200) for the elevator can sequentially check each parameter by pressing the '- button' and '+ button' displayed on the display unit (230).

[0069] In addition, the control parameters that can be read and written through the display unit (230) are as shown in [Table 2] below.

[0070] cord Item Description default value minimum maximum unit note 0 S1, bus reference voltage selection 0 0 1 V 0=Automatic, 1=Fixed 1 Vb, reference bus voltage 540 460 620 V Automatic at S1=0 2 V1, charging start voltage 60 20 60 V - 3 V2, charging stop voltage 15 5 20 V - 5 V4, generation stop voltage 20 5 25 V - 6 Supercapacitor maximum voltage 150 145 175 V - 7 Maximum charging current 45 20 45 A - 8 Minimum voltage 60 50 70 V - 9 Maximum recharge current 30 20 45 A - h Minimum voltage when ARD is installed 80 70 90 V - J Overvoltage protection standards 780 700 800 V - L Low voltage protection standards 350 300 450 V - n S2, Select Control Mode 0 0 1 - 0=Local, 1=RS485

[0071] Here, Vb, V1, V2, V3, and V4 are initialized to their default values ​​when S1 changes from 1 to 0.

[0072] In addition, when S2=0, local control is enabled, and when S2=1, RS-485 control is enabled.

[0073] In addition, control parameters can be checked and modified one by one by pressing the Set button displayed on the display unit (230).

[0074] In addition, the parameters related to the protection function are as shown in [Table 3] below.

[0075] cord protected items Operating conditions Operating status Alarm E001 Bus overvoltage When bus voltage exceeds protection value Stop / Wait Alarm E002 Supercapacitor Overvoltage When the supercapacitor voltage is exceeded Charging stop / discharging possible Alarm E003 Bus low voltage When the bus voltage is below the discharge stop value Stop / Wait Alarm E004 Supercapacitor Low Voltage When the supercapacitor voltage is below the low voltage protection value Charging stop / discharging possible Alarm E005 Overcurrent protection When the charge / discharge current exceeds the limit Stop / Wait Alarm E006 Overheating protection When the device or ambient temperature is exceeded Stop / Wait Alarm

[0076] Additionally, the energy storage device (200) based on a supercapacitor for the elevator may further include a voice output unit (not shown) for outputting voice information included in a signal processed by a control unit (290). Here, the voice output unit may include a receiver, a speaker, a buzzer, etc.

[0077] In addition, the voice output unit outputs guidance voice generated by the control unit (290).

[0078] The above plurality of connection terminals (P, N) (240) may be terminals for connecting to the output terminal of an inverter configured in the elevator (100).

[0079] That is, when a preset time (e.g., 5 to 10 minutes) has passed after the power of the elevator (100) is cut off, or when the DC bus voltage of the inverter (not shown) configured in the elevator (100) drops below a preset reference voltage (e.g., 25V), the plurality of connection terminals (P, N) (240) are each connected to the positive (+) (or positive terminal) and negative (-) (or negative terminal) of the DC bus of the inverter.

[0080] The grounding terminal (250) is configured to maintain a grounded state before the supercap-based energy storage device (200) for the elevator is connected to the elevator (100).

[0081] The plurality of active signal terminals (260) may be terminals for connecting to an active signal line configured in the elevator (100).

[0082] That is, the plurality of active signal terminals (260) are each connected to a plurality of active signal lines provided by the elevator (100). At this time, if there is no active signal line provided by the elevator (100), the plurality of active signal terminals (260) are short-connected.

[0083] The above DC / DC converter (270) converts electrical energy (or voltage) supplied through the elevator (100) (or the inverter of the elevator (100)) connected through the plurality of connection terminals (240) into a preset voltage.

[0084] In the embodiments of the present invention, for convenience of explanation, the electrical energy supplied from the elevator (100) is mainly described as being charged (or stored) in the super capacitor (280) and the electrical energy discharged from the super capacitor (280) is supplied to the elevator (100); however, the electrical energy going back and forth between the elevator (100) and the super capacitor (280) can be supplied to the super capacitor (280) and the elevator (100), respectively, in a state where the voltage is converted by the DC / DC converter (270).

[0085] The supercapacitor (280) charges or discharges electrical energy (or voltage / current). Here, the supercapacitor (280) is configured with a preset DC voltage (e.g., DC 171V) and a preset capacitance (e.g., 6F).

[0086] At this time, the supercap-based energy storage device (200) for the elevator can be configured with a preset average charging / discharging power (e.g., 3.3kW), a maximum charging / discharging power (e.g., 6.6kW), and a preset energy storage capacity (e.g., 20Wh).

[0087] The above-mentioned controller (or MCU (microcontroller unit)) (290) performs the overall control function of the supercapacitor-based energy storage device (200) for the elevator.

[0088] Additionally, the control unit (290) executes overall control functions of an elevator supercap-based energy storage device (200) using programs and data stored in the storage unit (220). The control unit (290) may include RAM, ROM, CPU, GPU, and a bus, and the RAM, ROM, CPU, GPU, etc. may be connected to each other via a bus. The CPU can access the storage unit (220) and perform booting using the O / S stored in the storage unit (220), and can perform various operations using various programs, content, data, etc. stored in the storage unit (220).

[0089] Additionally, the control unit (290) utilizes multiple pieces of information (or data), including previously collected operating status information of multiple elevators (100), multiple parameter-specific setting values, and multiple power saving rates (or reduction rates), as data for continuous learning (or machine learning / deep learning). Here, the input dataset for learning can perform training and testing functions by dividing the operating status information of the multiple elevators (100), multiple parameter-specific setting values, and multiple power saving rates (or reduction rates) into a training set and a test set at a preset ratio (e.g., including 7:3, 8:2, etc.). Additionally, the input dataset for learning includes the operating status information of multiple elevators (100), multiple parameter-specific setting values, and multiple power saving rates (or reduction rates) to be collected later. Furthermore, the output dataset for learning includes parameter-specific setting values, etc., for a part to be predicted, which learns based on one or more pieces of information and subsequently predicts it to provide an optimal power saving rate related to the information.

[0090] That is, the control unit (290) performs a learning function to generate parameter-specific setting values ​​for a parameter setting model to provide an optimal power saving rate related to the information in relation to specific raw data through pre-set learning data. At this time, the control unit (290) can build big data by refining unstructured data, structured data, and semi-structured data included in the raw data (or including multiple information / data, etc.), performing preprocessing including classification into metadata, performing analysis including data mining on the preprocessed data, and conducting learning, training, and testing based on at least one type of machine learning. At this time, at least one type of machine learning may be any one of supervised learning, semi-supervised learning, unsupervised learning, reinforcement learning, and deep reinforcement learning, or a combination of at least one of them. And data mining may include classification, which predicts the class of new data by learning a training dataset with known classes by exploring the inherent relationships between preprocessed data, or clustering, which groups data based on similarity without class information.

[0091] In this way, the control unit (290) performs a learning function on the parameter setting model, etc., in the form of a neural network or an artificial neural network through the learning data, etc.

[0092] In addition, the control unit (290) manages the installation, wiring, and debugging processes of the supercap-based energy storage device (200) for the elevator through the following process.

[0093] That is, after the plurality of connection terminals (240) and the terminals of the DC bus of the elevator (100) are each connected, the elevator (100) is set to the inspection mode and the power of the elevator (100) is turned on, the control unit (290) turns on the power of the supercapacitor-based energy storage device (200) for the elevator after a preset time (e.g., 5 seconds, etc.) has elapsed. At this time, the power on / off switching of the supercapacitor-based energy storage device (200) for the elevator may be performed by the control unit (290) configured in the supercapacitor-based energy storage device (200) for the elevator, or may be performed according to user input (or user selection / touch / control).

[0094] At this time, when the power of the supercapacitor-based energy storage device (200) for the elevator is turned on and the voltage of the supercapacitor (280) is lower than a preset minimum voltage, the control unit (290) controls the supercapacitor (280) to be charged to a preset voltage (e.g., 78V, etc.) through electrical energy (or voltage) supplied from an external power source (not shown) and then switched to a standby state.

[0095] Additionally, after the power of the supercapacitor-based energy storage device (200) for the elevator is turned on, if a preset time (e.g., 10 seconds, etc.) has elapsed, the control unit (290) checks (or determines) whether the DC bus voltage displayed on the display unit (230) (or the DC bus voltage value provided from the elevator (100) / the output voltage value of the inverter) matches the voltage measured by a multimeter (not shown) configured in the supercapacitor-based energy storage device (200) for the elevator. At this time, the control unit (290) receives the DC bus voltage (or voltage value), DC bus current (or current value), etc., provided (or transmitted) in real time from the elevator (100) after being connected to the elevator (100). Here, the DC bus voltage displayed on the display unit (230) is the output value (or output voltage value) of the inverter in the elevator (100), and the voltage measured by the multimeter may be the DC link voltage in the elevator (100) (or the DC link voltage value measured at the plurality of connection terminals (240).

[0096] That is, after the power of the supercap-based energy storage device (200) for the elevator is turned on, and after a preset time (e.g., 10 seconds, etc.) has passed, the control unit (290) checks (or determines) whether the DC bus voltage displayed on the display unit (230) (or the DC bus voltage value provided from the elevator (100) / the output voltage value of the inverter) is within a preset error range (e.g., 3%, 5%, 10%, etc.) with respect to the voltage measured by the multimeter.

[0097] If, as a result of the above verification (or the above judgment), the DC bus voltage (or DC bus voltage value provided from the elevator (100) / output voltage value of the inverter) displayed on the display unit (230) configured in the supercapacitor-based energy storage device (200) for the elevator does not match the voltage measured by a multimeter (not shown) configured in the supercapacitor-based energy storage device (200) for the elevator, the control unit (290) confirms that there is a problem with the parameter settings, etc. of the supercapacitor-based energy storage device (200) for the elevator, generates alarm information to guide the user to request technical consultation from the manufacturer, and outputs (or displays) the generated alarm information through the display unit (230) and / or the voice output unit.

[0098] That is, if the DC bus voltage displayed on the corresponding display unit (230) (or the DC bus voltage value provided from the corresponding elevator (100) / the output voltage value of the corresponding inverter) is outside (or deviates) the voltage measured by the corresponding multimeter and a preset error range (e.g., including 3%, 5%, 10%, etc.), the control unit (290) generates alarm information to guide the request for technical consultation to the manufacturer, and outputs (or displays) the generated alarm information through the display unit (230) and / or the voice output unit.

[0099] In addition, the control unit (290) automatically requests technical consultation support from the manufacturer (or manufacturer server (not shown)).

[0100] Additionally, if, based on the above verification result (or the above judgment result), the DC bus voltage displayed on the display unit (230) configured in the elevator-specific supercapacitor-based energy storage device (200) matches the voltage measured by the multimeter (not shown) configured in the elevator-specific supercapacitor-based energy storage device (200), the control unit (290) confirms that the elevator-specific supercapacitor-based energy storage device (200) is in a normal operating state, generates information indicating that the energy storage device (200) is operating normally, and outputs (or displays) the generated information indicating that the energy storage device (200) is operating normally through the display unit (230) and / or the voice output unit.

[0101] That is, if the DC bus voltage displayed on the corresponding display unit (230) (or the DC bus voltage value provided from the corresponding elevator (100) / the output voltage value of the corresponding inverter) is within a preset error range (e.g., including 3%, 5%, 10%, etc.) with respect to the voltage measured by the corresponding multimeter, the control unit (290) generates information indicating that the corresponding energy storage device (200) is operating normally, and outputs (or displays) the generated information indicating that the corresponding energy storage device (200) is operating normally through the display unit (230) and / or the voice output unit.

[0102] Additionally, the elevator (100) is set to a preset automatic state, and while the elevator (100) is moving up and down normally (or while the elevator (100) is operating normally), the control unit (290) determines (or verifies) whether a reference value (or reference range) is satisfied for each parameter of a plurality of parameters preset to the supercapacitor-based energy storage device (200) for the elevator. Here, the plurality of parameters include the current of the supercapacitor (280), the voltage of the supercapacitor (280), the DC bus current, the DC bus voltage, the accumulated power saving amount, the last error information, the operating state when an error occurs, the bus voltage when an error occurs, the bus current when an error occurs, the three-phase sampling current when an error occurs, etc.

[0103] That is, the control unit (290) determines (or confirms) whether each of the preset parameters satisfies a preset reference value (or reference range) by referring to the following [Table 4] while the elevator (100) is in operation.

[0104] Display items Supercapacitor charging when no-load increases Supercapacitor discharges during no-load drop U(supercapacitor voltage) Gradually increase to maximum voltage Gradually decrease to minimum voltage A (DC bus voltage) Constant current charging (+) Constant current discharge (-) i(supercapacitor current) Constant current charging (+) Constant current discharge (-)

[0105] If, based on the above judgment result (or the above verification result), at least one of the plurality of parameters does not satisfy the reference value (or reference range) corresponding to the parameter, the control unit (290) confirms that there is a problem with the parameter setting, etc. of the supercap-based energy storage device (200) for the elevator, generates alarm information to guide the manufacturer to request technical consultation, and outputs (or displays) the generated alarm information through the display unit (230) and / or the voice output unit.

[0106] That is, when the elevator (100) is in operation, if at least one of the preset parameters exceeds (or deviates from) a reference value (or reference range), the control unit (290) generates alarm information to guide the manufacturer to request technical consultation, and outputs (or displays) the generated alarm information through the display unit (230) and / or the voice output unit.

[0107] In addition, the control unit (290) automatically requests technical consultation support from the manufacturer (or manufacturer server (not shown)).

[0108] Additionally, if, based on the above judgment result (or the above verification result), all (or all) of the plurality of parameters satisfy a set reference value (or reference range), the control unit (290) generates information indicating that the energy storage device (200) is operating normally (or information indicating that the parameters of the energy storage device (200) based on a supercapacitor for the elevator are set normally), and outputs (or displays) the generated information indicating that the energy storage device (200) is operating normally through the display unit (230) and / or the voice output unit.

[0109] That is, when the elevator (100) is in operation, if all of the aforementioned preset parameters satisfy a reference value (or reference range) set for each parameter, the control unit (290) generates information indicating that the energy storage device (200) is operating normally, and outputs (or displays) the generated information indicating that the energy storage device (200) is operating normally through the display unit (230) and / or the voice output unit.

[0110] In addition, the control unit (290) analyzes the energy saving effect according to the change in overvoltage and / or the change in overcurrent, and optimizes (or sets) each of the plurality of parameters based on the change in charging / discharging current and / or voltage during the operation of the elevator (100).

[0111] In this way, the control unit (290) can, through the preceding processes, coordinate with the elevator (100) in which the supercapacitor-based energy storage device (200) for the elevator is installed (or placed / configured) and reset (or optimize) a plurality of parameters of the supercapacitor-based energy storage device (200) for the elevator to match the operating conditions of the elevator (100) through the pre-operation (or pre-operation) of the elevator (100).

[0112] Additionally, the control unit (290), after being physically connected to the elevator (100), performs artificial intelligence-based inference (or learning / artificial neural network / machine learning / deep learning) based on operating status information provided by the elevator (100), the power saving rate (or reduction rate) according to the operation of the elevator (100), and multiple parameter-specific setting values ​​at the time of information provision, and generates (or calculates / predicts / classifies) parameter-specific setting values, etc. in relation to the multiple parameters based on the inference result (or learning result).

[0113] That is, after the control unit (290) is physically connected to the elevator (100), it performs inference (or learning / artificial intelligence / machine learning / deep learning) using the operation status information provided by the elevator (100), the power saving rate (or reduction rate) according to the operation of the elevator (100), and multiple parameter-specific setting values ​​at the time of information provision as input values ​​(or prompts) of a preset parameter setting model, and generates (or calculates / predicts / classifies) parameter-specific setting values, etc., in relation to the multiple parameters based on the inference result (or learning result / artificial intelligence result / machine learning result / deep learning result / completion).

[0114] Additionally, the control unit (290) changes (or modifies / sets / optimizes) the values ​​(or set values) for a plurality of parameters of the corresponding elevator supercap-based energy storage device (200) using the generated (or calculated / expected / classified) parameter-specific set values.

[0115] Additionally, the control unit (290) receives operation status information provided by the elevator (100) according to the operation of the elevator (100). Here, the operation status information includes power generation operation status information, motor operation status information, etc. Additionally, the power generation operation status information includes cases where the elevator (100) rises when the load is below a preset minimum load, cases where the elevator (100) descends when the load is above a preset maximum load, etc. Additionally, the motor operation status information includes cases where the elevator (100) descends when the load is below a preset minimum load, cases where the elevator (100) rises when the load is above a preset maximum load, etc.

[0116] At this time, the power generation operation status information may include cases where the elevator (100) rises when the load is below a preset reference load, cases where the elevator (100) descends when the load is above the reference load, etc., and the motor operation status information may include cases where the elevator (100) descends when the load is below the reference load, cases where the elevator (100) rises when the load is above the reference load, etc.

[0117] In addition, the control unit (290) checks (or determines) whether it is in a power generation operation state or an electric operation state based on the received operation state information.

[0118] When the above confirmation result (or above judgment result) indicates that the elevator (100) is in a power generation operation state, the control unit (290) controls the state of the supercapacitor-based energy storage device (200) for the elevator to be charged (or stored) by increasing the DC bus voltage of the inverter within the elevator (100) above a preset DC bus voltage reference value and switching the state of the supercapacitor-based energy storage device (200) for the elevator to a charging state, thereby controlling the electric energy (or voltage) generated (or produced) by the elevator (100) provided (or supplied) through the DC bus to be charged (or stored) in the supercapacitor (280).

[0119] Additionally, if the elevator (100) is in an electric operation state based on the above verification result (or above judgment result), the control unit (290) controls the DC bus voltage of the inverter within the elevator (100) to decrease to below the preset DC bus voltage reference value, and switches the state of the supercapacitor-based energy storage device (200) for the elevator to a power generation state, thereby controlling the provision (or supply / discharge) of electrical energy (or voltage) currently being charged (or stored) in the supercapacitor (280) to the elevator (or the inverter within the elevator (100)) through the DC bus.

[0120] At this time, if the voltage being charged in the super capacitor (280) configured in the super capacitor-based energy storage device (200) for the elevator is lower than or equal to a previously preset voltage (e.g., 78V), the control unit (290) may stop supplying voltage (or electrical energy) to the inverter in the elevator (100).

[0121] In this way, the control unit (290) can control the charging or discharging function of the super capacitor (280) in real time according to the operating state of the elevator (100), regardless of whether the super capacitor (280) is fully charged.

[0122] In the embodiments of the present invention, a supercapacitor-based energy storage device (200) for a single elevator is mainly described as being connected to the elevator (100), but is not limited thereto, and a plurality of supercapacitor-based energy storage devices (200) for elevators may be connected in parallel to the elevator (100) and operated.

[0123] That is, multiple supercapacitor-based energy storage devices (200) for elevators are each connected in parallel to the DC bus terminal of the elevator (100).

[0124] In this way, when a plurality of elevator supercapacitor-based energy storage devices (200) are connected to the elevator (100), a specific elevator supercapacitor-based energy storage device (200) among the plurality of elevator supercapacitor-based energy storage devices (200) performs a master function, and the remaining elevator supercapacitor-based energy storage devices (200) excluding the specific elevator supercapacitor-based energy storage device (200) among the plurality of elevator supercapacitor-based energy storage devices (200) can perform a slave function.

[0125] Additionally, the supercapacitor-based energy storage device (200) for a specific elevator performing the above master function manages (or controls) the electric energy generated (or produced) from the elevator (100) to be distributed and charged to the plurality of supercapacitor-based energy storage devices (200) for elevators according to the operating status information of the elevator (100).

[0126] Additionally, the specific elevator supercapacitor-based energy storage device (200) performing the above master function checks the amount of electric energy charged in each of the plurality of elevator supercapacitor-based energy storage devices (200) in real time according to the operating status information of the elevator (100), and manages (or controls) to supply electric energy supplied from one or more elevator supercapacitor-based energy storage devices (200) to the elevator (100) based on the charging status of each energy storage device confirmed.

[0127] The following is the result of an experiment on the energy saving rate according to the operation of an elevator (100) with an energy storage device (200) based on a supercapacitor for an elevator according to an embodiment of the present invention applied, and a conventional elevator without such device applied.

[0128] That is, two elevators are operated in parallel in the factory office building, and one of the elevators has a supercap-based energy storage device (200) for the elevator applied (or mounted).

[0129] In addition, both elevators are equipped with power meters and are in a state of preset rated speed (e.g., 1 m / s), preset rated load (e.g., 1000 kg), preset hoist output (e.g., 6.3 kW), and preset operating mode (e.g., all day).

[0130] As such, the power consumption and savings rate after two elevators have been operated for one month are as shown in [Table 5] below.

[0131] A elevator (equipped) B Elevator (Not installed) Savings rate 254.2kWh 386.4kWh 35.15%

[0132] Additionally, as illustrated in FIGS. 6 to 10, the supercap-based energy storage device (200) for the elevator performs an offline firmware upgrade.

[0133] That is, the SWD (Serial Wire Debug) connection cable corresponds to the color, and when programming in an offline state, access to the busbar voltage of the supercap-based energy storage device (200) for the elevator is prohibited.

[0134] Afterward, when power is supplied to the programmer (or auxiliary battery or laptop computer) via USB after connecting the programming cable, the POWER indicator light turns on as shown in Figure 9 above.

[0135] Afterwards, press the programmer's round OK button to start programming (or upgrading).

[0136] Afterwards, as shown in Figure 10 above, when the NG indicator light is turned off and the green (OK) indicator light is turned on, the programming is successfully completed.

[0137] In this way, depending on the power generation operation state or motor operation state of the elevator, the electrical energy generated by the elevator can be charged or discharged into a supercapacitor.

[0138] Hereinafter, an energy storage method based on a supercapacitor for an elevator according to the present invention will be described in detail with reference to FIGS. 1 to 12.

[0139] FIGS. 11 and 12 are flowcharts illustrating an energy storage method based on a supercapacitor for an elevator according to an embodiment of the present invention.

[0140] First, when a preset time (e.g., 5 to 10 minutes) has passed after the power to the elevator (100) is cut off, or when the DC bus voltage of the inverter (not shown) configured in the elevator (100) drops below a preset reference voltage (e.g., 25V), the supercap-based energy storage device (200) for the elevator is connected to the terminal of the DC bus of the inverter.

[0141] That is, when a preset time (e.g., 5 to 10 minutes) has passed after the power to the elevator (100) is cut off, or when the DC bus voltage of the inverter configured in the elevator (100) drops below a preset reference voltage (e.g., 25V), a plurality of connection terminals (240) included in the supercapacitor-based energy storage device (200) for the elevator (or P+ terminal and N- terminal configured in the plurality of connection terminals (240)) are respectively connected to the positive (+) (or positive terminal) and negative (-) (or negative terminal) of the DC bus of the inverter. At this time, the supercapacitor-based energy storage device (200) for the elevator (or the ground terminal (250) included in the supercapacitor-based energy storage device (200) for the elevator) is configured to be grounded.

[0142] Additionally, the supercap-based energy storage device (200) for the elevator is connected to an active signal line provided by the elevator (100) (or the control system (not shown) of the elevator (100)).

[0143] That is, a plurality of active signal terminals (260) included in the supercapacitor-based energy storage device (200) for the elevator are each connected to a plurality of active signal lines provided by the elevator (100). At this time, if there is no active signal line provided by the elevator (100), the plurality of active signal terminals (260) are short-connected.

[0144] In this way, the supercap-based energy storage device (200) for the elevator can be physically connected to the elevator (100).

[0145] For example, when 5 minutes, which is a preset time, has passed after the power to the first elevator (100) is cut off, the P+ terminal and N- terminal included in the first elevator supercap-based energy storage device (200) are respectively connected to the positive terminal and negative terminal of the DC bus of the first inverter configured in the first elevator.

[0146] In addition, a plurality of active signal terminals included in the first energy storage device are each connected to an active signal line provided by the elevator (S1110).

[0147] Afterward, the elevator (100) is set to a preset maintenance state, and after the power to the elevator (100) is turned on, the supercapacitor-based energy storage device (200) for the elevator is turned on after a preset time (e.g., 5 seconds, etc.) has passed.

[0148] At this time, when the supercapacitor (280) configured in the supercapacitor (200) for the elevator is turned on, if the voltage of the supercapacitor (280) configured in the supercapacitor (200) for the elevator is lower than a preset minimum voltage, the supercapacitor (280) is charged to a preset voltage (e.g., 78V, etc.) through electrical energy (or voltage) supplied from an external power source (not shown), and then switched to a standby state.

[0149] For example, the first elevator is set to the inspection mode, and after the power of the first elevator is turned on, the first control unit (290) included in the first energy storage device turns on the power of the first energy storage device after the preset time of 5 seconds has elapsed (S1120).

[0150] Afterward, when the power of the supercapacitor-based energy storage device (200) for the elevator is turned on and a preset time (e.g., 10 seconds, etc.) has elapsed, the supercapacitor-based energy storage device (200) for the elevator checks (or determines) whether the DC bus voltage (or DC bus voltage value provided from the elevator (100) / output voltage value of the inverter) displayed on the display unit (230) configured in the supercapacitor-based energy storage device (200) for the elevator matches the voltage measured by a multimeter (not shown) configured in the supercapacitor-based energy storage device (200) for the elevator. At this time, the supercapacitor-based energy storage device (200) for the elevator receives the DC bus voltage (or voltage value), DC bus current (or current value), etc., provided (or transmitted) in real time from the elevator (100) after being connected to the elevator (100). Here, the DC bus voltage displayed on the display unit (230) is the output value (or output voltage value) of the inverter in the elevator (100), and the voltage measured by the multimeter may be the DC link voltage in the elevator (100) (or the DC link voltage value measured at the plurality of connection terminals (240).

[0151] That is, after the power of the supercapacitor-based energy storage device (200) for the elevator is turned on, and after a different preset time (e.g., 10 seconds, etc.) has passed, the supercapacitor-based energy storage device (200) for the elevator checks (or determines) whether the DC bus voltage (or the DC bus voltage value provided from the elevator (100) / the output voltage value of the inverter) displayed on the corresponding display unit (230) is within a preset error range (e.g., 3%, 5%, 10%, etc.) with respect to the voltage measured by the corresponding multimeter.

[0152] For example, after the power of the first energy storage device is turned on, when another preset time of 10 seconds has passed, the first control unit checks whether the first DC bus voltage displayed on the first display unit (230) configured in the first energy storage device is within a preset error range of 5% with respect to the second voltage measured by the first multimeter configured in the first energy storage device (S1130).

[0153] If, as a result of the above verification (or the above judgment), the DC bus voltage (or DC bus voltage value provided from the elevator (100) / output voltage value of the inverter) displayed on the display unit (230) configured in the supercapacitor-based energy storage device (200) for the elevator does not match the voltage measured by a multimeter (not shown) configured in the supercapacitor-based energy storage device (200) for the elevator, the supercapacitor-based energy storage device (200) for the elevator confirms that there is a problem with the parameter settings, etc. of the supercapacitor-based energy storage device (200) for the elevator, generates alarm information to guide the user to request technical consultation from the manufacturer, and displays (or outputs) the generated alarm information.

[0154] That is, if the DC bus voltage displayed on the corresponding display unit (230) (or the DC bus voltage value provided from the corresponding elevator (100) / the output voltage value of the corresponding inverter) is outside (or deviates) the voltage measured by the corresponding multimeter and a preset error range (e.g., including 3%, 5%, 10%, etc.), the supercap-based energy storage device (200) for the elevator generates alarm information to guide the user to request technical consultation from the manufacturer, and displays (or outputs) the generated alarm information.

[0155] In addition, the supercap-based energy storage device (200) for the elevator automatically requests technical consultation support from the manufacturer (or manufacturer server (not shown)).

[0156] For example, when the first DC bus voltage displayed on the first display unit is outside the preset error range of 5% with respect to the second voltage measured by the first multimeter, the first control unit generates first alarm information to guide the request for technical consultation to the manufacturer, and displays the generated first alarm information on the first display unit.

[0157] In addition, the first control unit requests technical consultation support from the manufacturer's server (S1140).

[0158] Additionally, if, based on the above verification result (or the above judgment result), the DC bus voltage displayed on the display unit (230) configured in the elevator supercapacitor-based energy storage device (200) (or the DC bus voltage value provided from the elevator (100) / the output voltage value of the inverter) matches the voltage measured by a multimeter (not shown) configured in the elevator supercapacitor-based energy storage device (200), the elevator supercapacitor-based energy storage device (200) confirms that the elevator supercapacitor-based energy storage device (200) is in a normal operating state, generates information indicating that the energy storage device (200) is operating normally, and displays (or outputs) the generated information indicating that the energy storage device (200) is operating normally.

[0159] That is, if the DC bus voltage displayed on the corresponding display unit (230) (or the DC bus voltage value provided from the corresponding elevator (100) / the output voltage value of the corresponding inverter) is within a preset error range (e.g., including 3%, 5%, 10%, etc.) with respect to the voltage measured by the corresponding multimeter, the supercapacitor-based energy storage device (200) for the elevator generates information indicating that the energy storage device (200) is operating normally, and displays (or outputs) the generated information indicating that the energy storage device (200) is operating normally.

[0160] For example, when the first DC bus voltage displayed on the first display unit is within a preset error range of 5% with respect to the second voltage measured by the first multimeter, the first control unit generates information indicating that the first energy storage device is operating normally, and displays the generated information indicating that the first energy storage device is operating normally on the first display unit (S1150).

[0161] Subsequently, the elevator (100) is set to a preset automatic state, and while the elevator (100) is moving up and down normally (or while the elevator (100) is operating normally), the supercapacitor-based energy storage device (200) for the elevator determines (or verifies) whether a reference value (or reference range) is satisfied for each parameter of a plurality of parameters preset to the supercapacitor-based energy storage device (200) for the elevator. Here, the plurality of parameters include the current of the supercapacitor (280), the voltage of the supercapacitor (280), the DC bus current, the DC bus voltage, the accumulated power saving amount, the last error information, the operating state when an error occurs, the bus voltage when an error occurs, the bus current when an error occurs, the three-phase sampling current when an error occurs, etc.

[0162] That is, the supercap-based energy storage device (200) for the elevator determines (or verifies) whether each of the preset parameters satisfies a preset reference value (or reference range) while the elevator (100) is in operation.

[0163] For example, after setting the first elevator to a preset automatic mode, when the first elevator moves up or down according to any user request, the first control unit determines whether each preset parameter satisfies a set reference value (S1160).

[0164] If, based on the above judgment result (or the above verification result), at least one of the plurality of parameters does not satisfy the reference value (or reference range) corresponding to the parameter, the supercapacitor-based energy storage device (200) for the elevator confirms that there is a problem with the parameter setting, etc. of the supercapacitor-based energy storage device (200) for the elevator and generates alarm information to guide the manufacturer to request technical consultation, and displays (or outputs) the generated alarm information.

[0165] That is, when the elevator (100) is in operation, if at least one of the preset parameters exceeds (or deviates from) a reference value (or reference range), the supercap-based energy storage device (200) for the elevator generates alarm information to guide the manufacturer to request technical consultation, and displays (or outputs) the generated alarm information.

[0166] In addition, the supercap-based energy storage device (200) for the elevator automatically requests technical consultation support from the manufacturer (or manufacturer server (not shown)).

[0167] For example, while the first elevator is in operation, when the DC bus current among the preset parameters exceeds a preset reference value corresponding to the DC bus current, the first control unit generates second alarm information to guide that technical consultation should be requested from the manufacturer, and displays the generated second alarm information on the first display unit.

[0168] In addition, the first control unit requests technical consultation support from the manufacturer's server (S1170).

[0169] Additionally, if, based on the above judgment result (or the above verification result), all (or all) of the plurality of parameters satisfy a set reference value (or reference range), the supercapacitor-based energy storage device (200) for the elevator generates information indicating that the energy storage device (200) is operating normally (or information indicating that the parameters of the supercapacitor-based energy storage device (200) for the elevator are set normally), and displays (or outputs) the generated information indicating that the energy storage device (200) is operating normally.

[0170] That is, when the elevator (100) is in operation, if all of the aforementioned preset parameters satisfy a reference value (or reference range) set for each parameter, the supercapacitor-based energy storage device (200) for the elevator generates information indicating that the energy storage device (200) is operating normally, and displays (or outputs) the generated information indicating that the energy storage device (200) is operating normally.

[0171] In addition, the supercap-based energy storage device (200) for the elevator analyzes the energy saving effect according to changes in overvoltage and / or overcurrent, and optimizes (or sets) each of a plurality of parameters based on changes in charging / discharging current and / or voltage during operation of the elevator (100).

[0172] In this way, the supercapacitor-based energy storage device (200) for the elevator can be configured to reset (or optimize) a plurality of parameters of the supercapacitor-based energy storage device (200) for the elevator to match the operating conditions of the elevator (100) by linking with the elevator (100) to which the supercapacitor-based energy storage device (200) for the elevator is installed (or placed / configured) through the preceding processes (e.g., steps S1110 to S1180) and the elevator (100) is configured through the pre-operation (or pre-operation) of the elevator (100).

[0173] For example, while the first elevator is in operation, when all of the preset parameters satisfy a reference value set for each parameter, the first control unit generates information indicating that the first energy storage device is operating normally, and displays the generated information indicating that the first energy storage device is operating normally on the first display unit (S1180).

[0174] Subsequently, the supercapacitor-based energy storage device (200) for the elevator receives operation status information provided by the elevator (100) in accordance with the operation of the elevator (100). Here, the operation status information includes power generation operation status information, motor operation status information, etc. Additionally, the power generation operation status information includes cases where the elevator (100) ascends when the load is below a preset minimum load, cases where the elevator (100) descends when the load is above a preset maximum load, etc. Additionally, the motor operation status information includes cases where the elevator (100) descends when the load is below a preset minimum load, cases where the elevator (100) ascends when the load is above a preset maximum load, etc.

[0175] At this time, the power generation operation status information may include cases where the elevator (100) rises when the load is below a preset reference load, cases where the elevator (100) descends when the load is above the reference load, etc., and the motor operation status information may include cases where the elevator (100) descends when the load is below the reference load, cases where the elevator (100) rises when the load is above the reference load, etc.

[0176] In addition, the supercap-based energy storage device (200) for the elevator checks (or determines) whether it is in a power generation operation state or an electric operation state based on the received operation state information.

[0177] For example, the first control unit receives first operation status information provided from the first elevator according to the operation of the first elevator, and checks whether it is in a power generation operation state or an electric power operation state based on the received first operation status information (S1190).

[0178] When the elevator (100) is in a power generation operation state as a result of the above verification (or judgment), the supercapacitor-based energy storage device (200) for the elevator is switched to a charging state when the DC bus voltage of the inverter within the elevator (100) rises above a preset DC bus voltage reference value, and the state of the supercapacitor-based energy storage device (200) for the elevator is charged (or stored) in the supercapacitor (280) configured in the supercapacitor-based energy storage device (200) for the elevator, which is provided (or supplied) through the DC bus and generated (or produced) by the elevator (100).

[0179] For example, when the power generation operation state is confirmed based on the received first operation state information as a result of the above verification, the first control unit switches to a charging state, and the energy storage device provided from the first inverter through the corresponding DC bus charges the electrical energy generated by the first elevator into the first supercapacitor (280) configured in the first energy storage device (S1200).

[0180] Additionally, if the elevator (100) is in an electric operation state as a result of the above verification (or judgment), the supercapacitor-based energy storage device (200) for the elevator reduces the DC bus voltage of the inverter within the elevator (100) to below the preset DC bus voltage reference value, and switches the state of the supercapacitor-based energy storage device (200) for the elevator to a power generation state, thereby providing (or supplying / discharging) the electrical energy (or voltage) being charged (or stored) in the supercapacitor (280) configured in the supercapacitor-based energy storage device (200) for the elevator to the inverter within the elevator (100) through the DC bus.

[0181] Accordingly, the elevator (100) uses the electrical energy (or voltage) provided to the inverter to power the main power, auxiliary power, backup power, emergency light, etc., inside the elevator (100).

[0182] At this time, if the voltage being charged in the super capacitor (280) configured in the super capacitor-based energy storage device (200) for the elevator is lower than or equal to a previously preset voltage (e.g., 78V), the super capacitor-based energy storage device (200) for the elevator may stop supplying voltage (or electrical energy) to the inverter in the elevator (100).

[0183] In this way, the energy storage device (200) based on a supercapacitor for the elevator can control the charging or discharging function of the supercapacitor (280) in real time according to the operating state of the elevator (100), regardless of whether the supercapacitor (280) is fully charged.

[0184] For example, when the electric operation state is confirmed based on the received first operation state information as a result of the above verification, the first control unit switches from the charging state to the power generation state and supplies the electrical energy being charged in the first supercapacitor to the first elevator through the corresponding DC bus (S1210).

[0185] As described above, an embodiment of the present invention charges or discharges electrical energy generated by the elevator into a supercapacitor depending on the power generation or electric operation state of the elevator, thereby managing energy in real time according to the operation state of the elevator and improving the operational efficiency of the entire system.

[0186] A person skilled in the art to which the present invention pertains will be able to make modifications and variations to the foregoing without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0187] 10: Supercap-based energy storage system 100: Elevator 200: Supercap-based energy storage device for elevators 210: Communications Unit 220: Storage Unit 230: Display unit 240: Multiple connection terminals 250: Ground terminal 260: Multiple active signal terminals 270: DC / DC Converter 280: Supercapacitor 290: Control unit

Claims

Claim 1 A control unit that links with an elevator in which a supercapacitor-based energy storage device for an elevator, including a control unit, is installed, and resets a plurality of parameters of the supercapacitor-based energy storage device for the elevator according to the operating conditions of the elevator through the prior operation of the elevator, and determines whether it is in a power generation operating state or an electric power operating state based on operating state information provided by the elevator according to the operation of the elevator; a supercapacitor that charges electrical energy or discharges charged electrical energy by control of the control unit in conjunction with the elevator according to the power generation operating state or the electric power operating state; and a plurality of connection terminals connected to the terminals of the DC bus of the inverter when a preset time has elapsed after the power of the elevator is cut off or when the DC bus voltage of the inverter configured in the elevator drops below a preset reference voltage.A supercapacitor-based energy storage device comprising a plurality of active signal terminals connected to an active signal line configured in the elevator, wherein the plurality of active signal terminals are short-circuited when there is no active signal line provided by the elevator, and wherein the control unit sets the elevator to a preset inspection mode, turns on the power of the elevator, turns on the power of the supercapacitor-based energy storage device for the elevator after a preset time has elapsed, and when another preset time has elapsed after the power of the supercapacitor-based energy storage device for the elevator has been turned on, checks whether the DC bus voltage displayed on the display unit matches the voltage measured by the multimeter configured in the supercapacitor-based energy storage device for the elevator, and if, as a result of the check, the DC bus voltage displayed on the display unit does not match the voltage measured by the multimeter configured in the supercapacitor-based energy storage device for the elevator, confirms that there is a problem with the parameter setting, generates alarm information to guide that technical consultation with the manufacturer should be requested, and displays the generated alarm information. Claim 2 A supercapacitor-based energy storage device according to claim 1, wherein the operating status information includes power generation operating status information or electric motor operating status information, wherein the power generation operating status information includes cases where the elevator rises when the load is below a preset minimum load or where the elevator descends when the load is above a preset maximum load, and the electric motor operating status information includes cases where the elevator descends when the load is below a preset minimum load or where the elevator rises when the load is above a preset maximum load. Claim 3 A step of resetting a plurality of parameters of the supercapacitor-based energy storage device for an elevator to match the operating conditions of the elevator through pre-operation of the elevator, by means of a control unit in conjunction with an elevator in which the supercapacitor-based energy storage device for an elevator including the control unit is installed; and a step of determining whether the elevator is in a power generation operating state or an electric power operating state based on operating state information provided by the elevator, by means of the control unit according to the operation of the elevator. The method includes the step of charging electrical energy through a supercapacitor or discharging charged electrical energy in conjunction with the elevator according to the power generation operation state or the electric operation state by the control unit, and the step of resetting a plurality of parameters of the supercapacitor-based energy storage device for the elevator according to the operating conditions of the elevator comprises: a process of connecting to the terminals of the DC bus of the inverter by means of a plurality of connection terminals when a preset time has elapsed after the power of the elevator is cut off or when the DC bus voltage of the inverter configured in the elevator drops below a preset reference voltage; a process of connecting to the active signal line configured in the elevator by means of a plurality of active signal terminals; a process of setting the elevator to a preset inspection mode and turning on the power of the elevator, and then, by the control unit, turning on the power of the supercapacitor-based energy storage device for the elevator after a preset time has elapsed; and, when another preset time has elapsed after the power of the supercapacitor-based energy storage device for the elevator is turned on, a process of checking by the control unit whether the DC bus voltage displayed on the display unit matches the voltage measured by a multimeter configured in the supercapacitor-based energy storage device for the elevator.A supercapacitor-based energy storage method comprising the steps of: when, upon verification, the DC bus voltage displayed on the display unit does not match the voltage measured by a multimeter configured in the supercapacitor-based energy storage device for the elevator, the control unit confirms that there is a problem with the parameter setting and generates alarm information to guide the request for technical consultation with the manufacturer, and displays the generated alarm information; wherein the plurality of active signal terminals are short-circuited when there is no active signal line provided by the elevator. Claim 4 delete Claim 5 In claim 3, when, as a result of the verification, the DC bus voltage displayed on the display unit matches the voltage measured by a multimeter configured in the supercapacitor-based energy storage device for the elevator, the control unit confirms that the supercapacitor-based energy storage device for the elevator is in a normal operating state, generates information indicating that the supercapacitor-based energy storage device for the elevator is operating normally, and displays the generated information indicating normal operation; the elevator is set to a preset automatic mode, and while the elevator is moving up and down normally, the control unit determines whether a preset plurality of parameters satisfy a reference value set for each parameter; when, as a result of the determination, at least one of the plurality of parameters does not satisfy the reference value corresponding to that parameter, the control unit confirms that there is a problem with the parameter setting, generates alarm information to guide that technical consultation should be requested from the manufacturer, and displays the generated alarm information. A supercapacitor-based energy storage method further comprising, when all of the plurality of parameters satisfy a set reference value based on the above judgment result, generating information indicating normal operation by the control unit and displaying the generated information indicating normal operation, wherein the plurality of parameters include the current of the supercapacitor, the voltage of the supercapacitor, the DC bus current, the DC bus voltage, the accumulated power saving amount, the last error information, the operating state when an error occurs, the bus voltage when an error occurs, the bus current when an error occurs, and the three-phase sampling current when an error occurs. Claim 6 In claim 3, the step of charging or discharging electrical energy through the supercapacitor is characterized by the control unit switching the state of the supercapacitor-based energy storage device for the elevator to a charging state when the elevator is in a power generation operation state, and controlling the charging of the supercapacitor with electrical energy generated by the elevator provided through a DC bus connected to the elevator. Claim 7 In claim 3, the step of charging or discharging electrical energy through the supercapacitor is characterized by, when the elevator is in an electric operation state, switching the state of the supercapacitor-based energy storage device for the elevator to a power generation state by the control unit, and providing the electrical energy charged in the supercapacitor to the elevator through a DC bus connected to the elevator.

Images