WO2022163103A1 - 対処法提示システム、対処法提示方法およびプログラム - Google Patents

対処法提示システム、対処法提示方法およびプログラム Download PDF

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Publication number
WO2022163103A1
WO2022163103A1 PCT/JP2021/043233 JP2021043233W WO2022163103A1 WO 2022163103 A1 WO2022163103 A1 WO 2022163103A1 JP 2021043233 W JP2021043233 W JP 2021043233W WO 2022163103 A1 WO2022163103 A1 WO 2022163103A1
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WIPO (PCT)
Prior art keywords
alarm
information
master information
alarm master
coping method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/043233
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English (en)
French (fr)
Japanese (ja)
Inventor
美里 服部
博康 石垣
大輔 後藤
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to US18/036,810 priority Critical patent/US20240019861A1/en
Priority to EP21923108.1A priority patent/EP4242764A4/en
Publication of WO2022163103A1 publication Critical patent/WO2022163103A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0267—Fault communication, e.g. human machine interface [HMI]
    • G05B23/0272—Presentation of monitored results, e.g. selection of status reports to be displayed; Filtering information to the user
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0267—Fault communication, e.g. human machine interface [HMI]
    • G05B23/027—Alarm generation, e.g. communication protocol; Forms of alarm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24086—Expert system, guidance operator, locate fault and indicate how to repair

Definitions

  • the present disclosure relates to a coping method presentation system, a coping method presentation method, and a program.
  • This application claims priority based on Japanese Patent Application No. 2021-013903 filed in Japan on January 29, 2021, the contents of which are incorporated herein.
  • Patent Document 1 by using an equipment damage event database and a process abnormality event database together and linking them with a causal relationship database, it is possible to provide operators with information on process events and equipment status as safety management information.
  • a plant safety management system is disclosed that provides information such as causes and events that are likely to spread.
  • Patent Literature 1 has the problem that it does not have a configuration for appropriately presenting countermeasures against an event that needs to be dealt with when it occurs.
  • the present disclosure has been made to solve the above problems, and aims to provide a coping method presentation system, a coping method presentation method, and a program that can appropriately present coping methods.
  • a coping method presentation system includes: one or more alarm master information associated with each alarm issued from one or more monitoring targets; a storage unit for storing information representing each coping method and information representing a time-series relationship between each of the alarm master information; and the coping method associated with the alarm master information corresponding to the designated alarm. and a presentation unit that acquires from the storage unit and presents the alarm master information and information related to the other alarm master information having the relationship.
  • a coping method presentation method includes: one or more alarm master information associated with each alarm issued from one or more monitoring targets; and information representing each coping method associated with each of the alarm master information. , and information representing the time-series relationship between each of the alarm master information, the countermeasure associated with the alarm master information corresponding to the designated alarm, and the alarm master information and the information related to the other alarm master information having the relevance, from the storage unit and presenting the information.
  • a program includes: one or more alarm master information associated with each alarm issued from one or more monitoring targets; information representing each coping method associated with each of the alarm master information; The countermeasure associated with the alarm master information corresponding to the designated alarm, the alarm master information and the association are stored using a storage unit that stores information representing time-series relationships between alarm master information. causing a computer to execute a step of acquiring information related to the other alarm master information having a property from the storage unit and presenting the information.
  • coping methods can be presented appropriately.
  • FIG. 1 is a system diagram showing a configuration example of a coping method presentation system according to an embodiment of the present disclosure
  • FIG. 2 is a block diagram showing a configuration example of a web server shown in FIG. 1
  • FIG. FIG. 4 is a schematic diagram for explaining an operation example of the coping method presentation system according to the embodiment of the present disclosure
  • FIG. 3 is a schematic diagram showing a configuration example of a countermeasure database shown in FIG. 2
  • FIG. 4 is a flowchart showing an overview of an operation example of the coping method presentation system according to the embodiment of the present disclosure
  • FIG. 2 is a schematic diagram showing a display example on the user terminal shown in FIG. 1
  • 4 is a flow chart showing an operation example of the coping method presentation system according to the embodiment of the present disclosure
  • FIG. 2 is a schematic diagram showing a display example on the user terminal shown in FIG. 1
  • 1 is a schematic block diagram showing a configuration of a computer according to at least one embodiment
  • FIG. 1 is a system diagram showing a configuration example of a coping method presentation system according to an embodiment of the present disclosure.
  • FIG. 2 is a block diagram showing a configuration example of the web server shown in FIG.
  • FIG. 3 is a schematic diagram for explaining an operation example of the coping method presentation system according to the embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram showing a configuration example of the countermeasure database shown in FIG.
  • FIG. 5 is a flowchart showing an overview of an operation example of the coping method presentation system according to the embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram showing a display example on the user terminal shown in FIG.
  • FIG. 7 is a flow chart showing an operation example of the coping method presentation system according to the embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram showing a display example on the user terminal shown in FIG.
  • the coping method presentation system 1 shown in FIG. 1 is a functional configuration composed of a combination of a computer, hardware such as peripheral devices of the computer, and software such as programs executed by the computer and data processed.
  • a database server 11 , a web server 12 , and a database server 13 are provided.
  • the countermeasure presentation system 1 is configured as one element of a remote monitoring system 100 that remotely monitors alarm data issued from a monitoring target such as a unit 3 provided in a plant 2 such as a power plant.
  • the database server 11 accumulates alarm data issued from monitored objects such as units 3 installed in a plant 2 such as a power plant.
  • the database server 11 receives alarm data transmitted from the plant 2, accumulates the received alarm data in a database, and manages the data.
  • the alarm data is information issued by a computer (not shown) that monitors the unit 3, equipment, equipment, equipment, or the entire plant as a monitoring target when a predetermined abnormality (event indicating an abnormal state) is confirmed. There is, for example, the date and time when the abnormality was confirmed, the identification information of the monitoring target, the content of the abnormality, and the like.
  • the plant 2 also transmits event data indicating that a predetermined event indicating the occurrence of a predetermined state or state change has occurred to the database server 11 .
  • the database server 13 accumulates alarm data issued by the simulator 5.
  • the alarm data issued by the simulator 5 has the same format as the alarm data issued by the plant 2 .
  • the web server 12 has a countermeasure database 125, and has a function of searching the countermeasure database 125 for alarm data issued from the plant 2 and presenting it to the user terminal 4, and a simulator 5 for simulating the plant 2. It has a function of retrieving the countermeasure database 125 for the alarm data issued by and presenting it to the user terminal 6 .
  • the web server 12 provides the user terminal 4 and the user terminal 6 with functions such as search, browsing, and registration through the network on the web system, and provides information indicating how to deal with the problem.
  • the user terminal 4 and the user terminal 6 are, for example, terminals such as a server, a desktop personal computer, a notebook personal computer, a tablet terminal, etc., and have a display section 4a and a display section 6a.
  • the user terminal 4 is, for example, a terminal used when operating the unit 3 or the like in the plant 2 .
  • the user terminal 6 is, for example, a terminal used by trainees and trainers when the operator of the plant 2 trains the operation of the
  • the coping method presentation system 1 operates by selecting, for example, "actual operation mode” and "training mode”. can be switched with
  • the Web server 12a presents countermeasures to the user terminal 4 and updates the countermeasure database 125 based on the alarm data issued by the plant 2, and in the "training mode", the simulator 5 Based on the issued alarm data, a coping method is presented to the user terminal 6 and the coping method database 125 is updated.
  • the Web server 12 shares the countermeasure database 125 for alarm data from the plant 2 and alarm data from the simulator 5 .
  • a configuration example of the countermeasure database 125 will be described later.
  • the simulator 5 simulates the operation of each unit of the plant 2 by using, for example, a machine learning model or a model combining a physical model and a simple model, and generates alarm data. Operation of the simulator 5 is performed from the user terminal 6, for example.
  • the simulator 5 preferably has the following functions, for example. That is, the simulator 5 provides plant operation (start/stop), simulation execution speed change, backtrack function (returns the simulator state to the past state and retrains), operating conditions (e.g. atmospheric temperature, cooling water temperature etc.), settings for accident items, and pseudo-occurrence functions.
  • the Web server 12 has a presentation unit 121, a registration unit 122, a database management unit 123, and a storage unit 124 as a functional configuration configured by a combination of hardware and software.
  • the storage unit 124 also stores a countermeasure database 125 .
  • a configuration example of the countermeasure database 125 will be described with reference to FIGS. 3 and 4.
  • FIG. 3 shows an example of a time series 501 of alarm data (rare alarms) created by the simulator 5 used when constructing the countermeasure database 125.
  • the simulator 5 When constructing the coping method database 125, the simulator 5 is used to simulate the following events, and output rare alarms caused by these events. Abnormal events that are expected to occur once every few years, such as "auxiliary machine malfunction” and “control valve malfunction”, work related to plant equipment changes such as “replacement work of electric heating piping” and “update of hardware such as combustors” And so on, by accelerating the execution speed on the simulator, the change in the state of alarm occurrence over time is output to the simulator 5 as data.
  • FIG. 4 shows a configuration example of the coping method database 125 shown in FIG.
  • the coping method database 125 shown in FIG. 4 is configured as a graph database.
  • a graph database is a database having a graph structure, and expresses "relationships" between nodes using three elements: “nodes”, “edges”, and “properties”. Nodes represent objects, edges represent relationships between nodes, and properties represent attributes of nodes and edges.
  • Graph databases are fast in searching for connections, and are less susceptible to increases in the amount of data than relational databases, etc., that search the entire database, and are fast in searching for connections. It also has the feature that the data definition is visually easy to understand from the developer's point of view.
  • the countermeasure database 125 shown in FIG. 4 has nodes N11 to N22 and edges E11 to E21. Note that FIG. 4 shows only one node for each type classified by the labels "construction history”, “alarm”, “document information”, and “comment”. However, the number of nodes is not limited to one and is usually plural.
  • Nodes N11 to N14 are nodes representing alarm master information.
  • Alarm master information is data that is the basis of alarm data.
  • Nodes N11 to N14 have properties such as alarm name, unit name, device name, and alarm category, for example.
  • Node N11 has the property of "minor failure of equipment A equipment” and is related to node N15 by instruction edge E11 and to node N12 by association edge E15.
  • Node N12 has the property "high temperature for device A" and is related to node N16 by an instruction edge E12, to node N13 by an association edge E16, and to node N19 by an occurrence edge E18.
  • Node N13 has the property "Pressure Drop on Equipment A” and is related to node N17 by an instruction edge E13 and to node N14 by an association edge E17.
  • Node N14 has a property of "occurrence of trip due to pressure drop in device B" and is associated with node N18 by edge E14 of the instruction.
  • Nodes N15 to N18 are nodes representing first aid (countermeasures), and represent countermeasures to the alarm masters represented by nodes N11 to N14.
  • Nodes N15 to N18 have properties such as an alarm name (alarm name), behavior, cause, countermeasure, and the like.
  • the nodes N15 to N18 have the respective properties of "minor failure of device A equipment", "high temperature regarding device A”, “pressure drop in device A”, and "occurrence of trip due to pressure drop in device B”. have.
  • a node N19 is a node representing an alarm that has occurred.
  • the node N19 has properties such as date and time of occurrence, alarm name, status, unit, device name, and the like.
  • Node N19 is related to node N20 by edge E19 of the comment and to node N21 by edge E20 of the attached document. Note that the node N19 does not extend a master edge directed to the node N12, and defines a connection to the node N12 by tracing back the generated edge E18. This can save the amount of information, but if the frequency of tracing is high, edges may be defined.
  • the node N20 is a node representing the document information (registration information) registered by the user for the alarm of the node N19.
  • the document is, for example, a document (a document, a document file that can be downloaded on the Web, a Web page, etc.) that was referred to when coping with the alarm.
  • the node N20 has properties such as the document name and URL (Uniform Resource Locator) of the reference destination of the document.
  • the node N21 is a node representing a comment (registration information) registered by the user for the alarm of the node N19.
  • a comment is, for example, a text related to dealing with an alarm.
  • the node N21 has properties such as character information representing the content of the comment.
  • the node N22 is a node representing the construction history.
  • the node N22 for example, has properties such as the content of the work, the date and time of work execution, and the elapsed period that needs to be monitored after the work is done (in this example, it has the property of "replacement work for device C").
  • Node N22 is related to node N12 by edge of occurrence E21. However, one node representing the construction history may be associated with multiple alarm master nodes.
  • the presenting unit 121 refers to the coping method database 125, and has coping methods associated with the alarm master information corresponding to the alarm specified by the user, and time-series relationships between the alarm master information and the coping methods.
  • Information related to other alarm master information such as countermeasures associated with other alarm master information is acquired from the storage unit 124 and presented to the user terminal 4 or the user terminal 6 .
  • the registration unit 122 registers new comments and document information (registration information) in the countermeasure database 125 in association with the alarm specified by the user.
  • the registration information is information representing at least one of a comment related to dealing with an alarm designated by the user or a document referred to when dealing with the designated alarm.
  • the database management unit 123 searches and updates the coping method database 125 according to instructions from the presentation unit 121, the registration unit 122, and the like.
  • FIG. 5 the user accesses the web screen displayed by the web server 12 from the user terminal 6 (step S1), selects an alarm that is currently occurring, and confirms detailed information about the alarm and how to deal with it (step S1).
  • step S2) and the flow of processing when registering a comment for an alarm step S3 are shown.
  • step S1 the web server 12 (presentation unit 121) presents information for displaying, for example, a screen 40a shown in FIG.
  • a screen 40a shown in FIG. 6 includes a list 41 (two items in this example) of alarm data displayed by the user specifying, for example, plant 2, unit 3, and the like.
  • each record representing alarm data includes items of date and time of occurrence, alarm name, state (whether or not it continues), unit, and device name.
  • step S2 assuming that the user selects, for example, the top alarm data (“High temperature regarding device A”) on the screen 40a, the Web server 12 (presentation unit 121) displays , the user terminal 6 presents information for displaying, for example, a screen 40b shown in FIG.
  • a screen 40b shown in FIG. 8 includes a list 42 of alarm data, a display area 44 showing first aid information corresponding to the selected alarm data, and a chronological relationship to the selected alarm data. and a display area 45 showing a list of other alarm masters having
  • the Web server 12 acquires the alarm master information corresponding to the alarm that occurred this time and other alarm master information having a time-series relationship with the alarm master information (step S11).
  • the Web server 12 displays the countermeasure associated with the alarm master information, other alarm master information having a chronological relationship with the alarm master information, and other alarm master information.
  • Information related to other alarm master information such as the associated coping method is acquired (step S12).
  • the node N12 is reached by following the edge E18 from the node N19, and the edge E16 is followed from the node N12 to reach the node N13. It reaches N11, and then follows the edge E17 from the node N13 to reach the node N14. From the nodes N11 to N14, the first aid nodes N15 to N18 can be retrieved by tracing the edges E11 to E14 of the instructions.
  • the display area 45 of FIG. 8 contains alarm data corresponding to the nodes N11, N13, and N14. For example, when another alarm master is selected in the display area 45 of FIG.
  • the Web server 12 (presentation unit 121) displays information such as coping methods associated with the selected alarm master on a pop-up screen or the like. can be presented to the user terminal 6 for display in .
  • nodes N15, N17, and N18 surrounded by broken-line blocks are information recommended as other information that should be confirmed.
  • step S3 of FIG. 5 comments and documents are registered for this alarm.
  • a new comment node N21 and a document information node N20 associated with the current alarm node N19 shown in FIG. 4 are generated.
  • a periodic inspection management system (not shown, a system that manages the history of construction results) and the coping method database 125 are linked in advance.
  • the results are also registered in the work history (for example, node N22) of the countermeasure database 125.
  • FIG. Then, at the timing when the results are registered, the construction information or rare alarms that are thought to occur from this construction work are displayed in advance on the screen 40a, and when these information are clicked, the related first aid is recommended and the response is urged. is given.
  • the embodiments of the present disclosure have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and design changes etc. within the scope of the present disclosure are also included. .
  • only one plant 2 is monitored, but the present invention is not limited to this.
  • the monitoring target is not limited to the plant 2, and devices, equipment, and units that are not installed in the plant may be monitored.
  • the registration information may be either one of comments and document information.
  • the countermeasure database 125 is not limited to a graph database, and may be a database of another format, or may be a combination of a database of another format and a graph database.
  • the coping method presentation system 1 processes the alarm data issued by the plant 2 or the simulator 5, but the coping method presentation system 1 processes event data in addition to (or instead of) alarm data may be processed.
  • the term “alarm” can be read as the term “alarm/event” (meaning at least one of an alarm and an event).
  • FIG. 9 is a schematic block diagram showing the configuration of a computer according to the above embodiment.
  • Computer 90 comprises processor 91 , main memory 92 , storage 93 and interface 94 .
  • the coping method presentation system 1 described above is implemented in a computer 90 .
  • the operation of each processing unit described above is stored in the storage 93 in the form of a program.
  • the processor 91 reads out a program from the storage 93, develops it in the main memory 92, and executes the above process according to the program.
  • the processor 91 secures storage areas corresponding to the storage units described above in the main memory 92 according to the program.
  • the program may be for realizing part of the functions to be exhibited by the computer 90.
  • the program may function in combination with another program already stored in the storage or in combination with another program installed in another device.
  • the computer may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration.
  • PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array).
  • part or all of the functions implemented by the processor may be implemented by the integrated circuit.
  • Examples of the storage 93 include HDD (Hard Disk Drive), SSD (Solid State Drive), magnetic disk, magneto-optical disk, CD-ROM (Compact Disc Read Only Memory), DVD-ROM (Digital Versatile Disc Read Only Memory) , semiconductor memory, and the like.
  • the storage 93 may be an internal medium directly connected to the bus of the computer 90, or an external medium connected to the computer 90 via an interface 94 or communication line. Further, when this program is distributed to the computer 90 via a communication line, the computer 90 receiving the distribution may develop the program in the main memory 92 and execute the above process.
  • storage 93 is a non-transitory, tangible storage medium.
  • the coping method presentation system 1 includes one or more alarm master information associated with each alarm issued from one or more monitoring targets (plant 2, unit 3), and each alarm A storage unit 124 for storing information representing each coping method associated with the master information and information representing the time-series relationship between each alarm master information (edges E15, E16, E17);
  • the coping method presentation system 1 is the coping method presentation system 1 of (1), wherein the storage unit 124 stores work history information (node N22) related to the work history for the monitoring target. and information that associates the work history information with one or a plurality of the alarm master information (node N12), and the presenting unit 121 stores the alarm master information corresponding to the specified alarm (node N19).
  • work history information node N22
  • other information for example, indicating a countermeasure
  • the coping method presentation system 1 is the coping method presentation system 1 of (2), wherein the information that associates the work history information with one or more of the alarm master information is a predetermined Deleted when time passes. According to this aspect, it is possible to improve the accuracy of the knowledge base.
  • Coping method presentation system Plant 3 Units 4, 6 User terminal 5 Simulators 11, 13 Database server 12 Web server 121 Presentation unit 122 Registration unit 123 Database management unit 124 Storage unit 125 Coping method database

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Processing Of Solid Wastes (AREA)
PCT/JP2021/043233 2021-01-29 2021-11-25 対処法提示システム、対処法提示方法およびプログラム Ceased WO2022163103A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US18/036,810 US20240019861A1 (en) 2021-01-29 2021-11-25 First aid presentation system, first aid presentation method, and program
EP21923108.1A EP4242764A4 (en) 2021-01-29 2021-11-25 Coping method presentation system, coping method presentation method, and program

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JP2021013903A JP2022117290A (ja) 2021-01-29 2021-01-29 対処法提示システム、対処法提示方法およびプログラム
JP2021-013903 2021-01-29

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US (1) US20240019861A1 (enExample)
EP (1) EP4242764A4 (enExample)
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WO2024049235A1 (ko) 2022-08-31 2024-03-07 주식회사 엘지에너지솔루션 음극 활물질, 음극 활물질의 제조 방법, 음극 조성물, 이를 포함하는 리튬 이차 전지용 음극 및 음극을 포함하는 리튬 이차 전지

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