JP2021170347A - Maintenance support method and computer program - Google Patents

Abstract

To provide a maintenance support method and a computer program.SOLUTION: A maintenance support method comprises a step in which a computer narrows down, based on measurement data acquired from a storage device that periodically acquires and sequentially stores the measurement data including a voltage value related to a power storage element, a cause of an abnormality or a sign of an abnormality of the power storage element to one or a plurality of cause candidates and identifies identification data of an article necessary for repair according to the narrowed-down cause.SELECTED DRAWING: Figure 11

Description

The present invention relates to a maintenance support method and a computer program that support maintenance work of a power storage element.

The power storage element is widely used in an uninterruptible power supply, a DC or AC power supply included in a regulated power supply, and the like. The use of power storage elements in large-scale systems that store renewable energy or power generated by existing power generation systems is also expanding.

Preventive maintenance efforts including regular inspections such as deterioration diagnosis are indispensable for the operation of power storage elements. In order to reduce the burden on the maintenance worker and enable the deterioration diagnosis of the power storage element based on accurate information, the user or the maintenance worker of the power storage element can check the state of the power storage element via the network. Technology has been proposed.

Patent Document 1 discloses a device that allows a maintenance worker to acquire state data of a power storage element at the time of periodic inspection of the power storage element without going through a network managed by a user of the power storage element. According to the method disclosed in Patent Document 1, the maintenance worker can go to the place where the power storage element is installed and easily acquire the state data of the power storage element by using the terminal device possessed by the maintenance worker.

Patent No. 64029225

By being able to remotely check the status data of the power storage element, the maintenance worker can detect that an abnormality has occurred. For the abnormalities that have occurred, maintenance workers go to the installation location of the power storage element, investigate the cause of the abnormality, and take measures such as replacing the power storage element in which the abnormality has occurred. Depending on the skill level of the maintenance worker, the time required for the work varies greatly. Maintenance management is desired so that the system including the power storage element can be continuously operated.

An object of the present invention is to provide a maintenance support method and a computer program.

In the maintenance support method, the computer periodically acquires the measurement data including the voltage value related to the power storage element and sequentially stores the measurement data. It narrows down to one or a plurality of possible causes, and identifies the identification data of the article necessary for repair according to the narrowed down causes.

The outline of the maintenance support system is shown. It is a block diagram which shows the internal structure of the apparatus included in a maintenance support system. It is a block diagram which shows the internal structure of maintenance equipment. The repair sequence in the maintenance support system is shown. The repair sequence in the maintenance support system is shown. An example of the contents of the repair support screen displayed on the maintenance terminal device is shown. An example of the contents of the repair support screen displayed on the maintenance terminal device is shown. It is a figure which shows the content example of the repair flow. Other content examples of the repair support screen are shown. Other content examples of the repair support screen are shown. The repair sequence by the maintenance support system in the first modification is shown. It is a block diagram which shows the structure of the maintenance support apparatus in the modification 2.

In the maintenance support method, the cause of the abnormality or the sign of the abnormality of the power storage element is narrowed down to one or more from a plurality of cause candidates based on the measurement data related to the power storage element, and is stored in association with each of the plurality of cause candidates. From a certain repair flow, select the repair flow corresponding to the narrowed down cause, and output the repair procedure to be executed based on the selected repair flow.

Although it may not be possible to determine an abnormality or a sign of an abnormality from the appearance of the power storage element, it is possible to detect an abnormality or a sign of the abnormality by capturing the measurement data of the power storage element. In the past, it was not uniform for maintenance workers to determine what kind of abnormality occurred from which measurement data and how to repair it. With the above configuration, no matter who the maintenance worker is, the repair procedure based on the repair flow stored in advance as the best according to the narrowed down cause is output to the device used by the maintenance worker. Homogeneous repair work is carried out regardless of whether or not the person is an expert.

The result of the work based on the repair procedure is accepted, the cause is further narrowed down according to the received result, the output of the repair procedure to be executed next based on the cause and the acceptance of the work result are until the repair is completed. It may be executed repeatedly.

Even if the cause of the abnormality or the sign of the abnormality cannot be identified only by the measurement data acquired in advance, the maintenance support method depends on the result of the work when the repair flow is executed for the maintenance worker. Present the procedure for identifying the cause at the repair site. As a result, even an unskilled worker can perform the same repair work as a skilled worker.

Depending on the narrowed down cause, repair arrangement data including identification data of a replacement member, a measuring instrument or a tool necessary for the repair work may be transmitted to the worker of the repair work.

For example, if the deterioration of the power storage element is presumed to be the cause of the abnormality from the measurement data of the power storage element, the maintenance worker brings a replacement power storage element. When it is estimated from the measurement data that an abnormality or abnormality is detected due to a structural or electric circuit factor other than the power storage element, various tools corresponding to them are required according to the situation. With the above configuration, replacement members, measuring instruments, tools, etc. necessary for repair work are arranged. Since necessary items are automatically arranged, it is possible to avoid a situation where a maintenance worker who goes to the site forgets to carry it and visits again, improving the efficiency of maintenance activities regardless of the skill level of the maintenance worker. Can be expected. By automatically arranging replacement parts, it is possible to link with the management system for delivery to customers, and it is possible to check the history of what kind of parts were replaced and when.

Depending on the narrowed-down cause or the result of the work, the schedule of the skilled worker required for the repair work may be arranged, and the repair procedure may be output based on the instruction from the skilled worker.

With the above configuration, even in the case of an event that cannot be covered by the repair flow, remote support of an expert can be smoothly performed. As a result, uniform repair work is carried out regardless of whether or not the maintenance worker who actually performs the repair work is an expert or not.

The cause of the abnormality or sign may be narrowed down by using a learning model trained to output the cause and accuracy when the measurement data is input.

By using the learning model, it may be possible to detect an abnormality or a sign of an abnormality that is difficult for humans to discriminate from the appearance or measurement data. Although the state of the power storage element cannot be measured directly, there is a possibility that it can be accurately estimated by the learning model from the measurement data. It is possible to improve the accuracy of estimation by utilizing the past repair results for estimating the cause appearing in multiple measurement data.

The maintenance support system includes a storage device that periodically acquires and sequentially stores measurement data related to a power storage element, a maintenance terminal device that can be connected to the storage device by communication, and a maintenance support device that can be connected to the maintenance terminal device by communication. And include. The maintenance support device narrows down the cause of the abnormality or the sign of the abnormality of the power storage element from a plurality of possible causes to one or a plurality of causes based on the measurement data acquired from the storage device. The maintenance support device selects a repair flow corresponding to the narrowed-down cause from the repair flows stored in association with each of the plurality of cause candidates, and performs a repair procedure to be executed based on the selected repair flow. It is transmitted to the maintenance terminal device.

The maintenance support device receives the result of the work based on the repair procedure from the maintenance terminal device, further narrows down the cause according to the received result, transmits the repair procedure to be executed next based on the cause, and the work. The reception of the result of is repeated until the repair is completed.

The maintenance support device associates the cause of the abnormality or the sign of the abnormality of the power storage element with one or more of the cause estimation units and the plurality of cause candidates based on the measurement data related to the power storage element from a plurality of cause candidates. It includes a flow selection unit that selects a repair flow corresponding to the narrowed down cause from the stored repair flow, and a procedure output unit that outputs a repair procedure to be executed based on the selected repair flow.

The computer program narrows down the cause of the abnormality or the sign of the abnormality of the power storage element to one or more from a plurality of cause candidates based on the measurement data related to the power storage element, and stores the cause in association with each of the plurality of cause candidates. The repair flow corresponding to the narrowed-down cause is selected from the repair flows that have been performed, and the process of outputting the repair procedure to be executed based on the selected repair flow is executed.

The present invention will be specifically described with reference to the drawings showing the embodiments thereof.

FIG. 1 shows an outline of the maintenance support system 100. The maintenance support system 100 includes a maintenance support device 1 and a maintenance terminal device 2 used by a maintenance worker. The maintenance support system 100 can communicate with the remote monitoring system 300. The remote monitoring system 300 collects data indicating the state of the power storage element 50 to be maintained, and realizes remote state viewing based on the data collected via the network. The maintenance support system 100 can be communicatively connected to a customer data management system 400 that stores data of a customer who purchases or rents a power storage element to be maintained. In the present embodiment, the maintenance support system 100, the remote monitoring system 300, and the customer data management system 400 are managed by the manufacturer of the power storage element 50 to be maintained, and mutually via a network MN for the manufacturer or a dedicated line. Communication connection is possible to. The maintenance support system 100 may be communicatively connected to the manufacturing management system (not shown) of the power storage element 50.

Network MN is a local network for manufacturers. The network MN is, for example, Ethernet (registered trademark) and may be an optical line. The network MN may include a VPN (Virtual Private Network) and connect systems 100, 300, and 400 having different locations as a local network. The distance between the maintenance support system 100 and the remote monitoring system 300, and between the maintenance support system 100 and the customer data management system 400 may be a part of the network MN, a dedicated line, or a VPN.

The maintenance terminal device 2 and the maintenance support device 1 can be communicated and connected via the communication network N or the network MN. The communication network N is the so-called Internet. The communication network N may include a carrier network that realizes wireless communication according to a predetermined mobile communication standard. The communication network N may include a general optical line.

The power storage element 50 to be maintained by the maintenance support system 100 is preferably a rechargeable battery such as a secondary battery including a lead storage battery and a lithium ion battery, or a capacitor. A part of the power storage element 50 may be a non-rechargeable primary battery. Each of the power storage elements 50 in the present embodiment is a lead storage battery. The power storage element 50 may be a power storage module in which a plurality of power storage cells are connected. The power storage element 50 may be a power storage cell itself or a power storage module group in which a plurality of power storage modules are connected.

The power storage device 5 includes one or more power storage elements 50. The power storage device 5 may be used alone. The power storage device 5 is used as a group of power storage devices 5 that communicate and connect to a customer network CN managed by a customer (user) of the power storage element 50. The power storage device 5 group managed by the same customer transmits the state data of the power storage element 50 to the management device 51 managed by the customer via the customer's network CN. The state data includes at least the voltage value. The state data may include the internal resistance value, the current value, and the temperature. The state data is transmitted from the unit connected to the terminal of the power storage element 50, which is a lead storage battery, via the maintenance communication device 6. The state data may be transmitted by the maintenance communication device 6 connected to the battery management device (BMU) provided in the power storage module which is a lithium ion battery. The state data may be transmitted from the maintenance communication device 6 to the maintenance terminal device 2. The state data transmitted from the plurality of power storage devices 5 is received by the remote monitoring system 300 via the dedicated line N2 or the communication network N. The state data is stored as a state history in association with identification data such as a serial number that identifies each of the power storage elements 50.

The maintenance communication device 6 is provided in the power storage device 5. The maintenance communication device 6 can exchange data with the maintenance terminal device 2 used by the maintenance worker without going through the network CN. The maintenance communication device 6 can be communicatively connected to a unit that acquires state data for each of the power storage elements 50 of the power storage device 5. The maintenance communication device 6 can communicate with the unit connected to the terminal of the lead storage battery by wireless communication. The maintenance communication device 6 can be communicatively connected to the battery management device (BMU) provided in the power storage module of the lithium ion battery. The maintenance communication device 6 stores the same state data as the state data transmitted from the power storage device 5 to the management device 51 in a built-in memory.

The network CN is a customer's local network that operates a plurality of power storage devices 5. The network CN is, for example, Ethernet (registered trademark), and may be an optical line. The network CN may include a VPN. The network CN may be a network compatible with ECHONET (registered trademark) / ECHONET Lite (registered trademark). The leased line N2 is a private network that connects the customer's network CN of the power storage device 5 and the remote monitoring system 300. The leased line N2 may be a communication network N. The leased line N2 may be a dedicated network compatible with ECHONET / ECHONET Lite.

The maintenance support system 100 of the present embodiment manages the maintenance of the power storage element 50 or the power storage device 5 from the state data acquired by the maintenance terminal device 2, the customer data obtained from the customer data management system 400, and the remote monitoring system 300. Support using the obtained diagnostic data. The maintenance support system 100 detects an abnormality or detects a sign of an abnormality based on the state data acquired by the maintenance terminal device 2 and the diagnostic data obtained from the remote monitoring system 300. The maintenance support system 100 supports the repair work of the maintenance worker based on the detected abnormality or the sign of the abnormality. Based on the diagnosis based on the state data collected by the remote monitoring system 300, the maintenance support device 1 interactively presents the repair work procedure to the maintenance worker through the maintenance terminal device 2. As a result, the repair work can be uniformly performed by various maintenance workers regardless of the skill level.

A detailed configuration for realizing such a maintenance support system 100 for the power storage element 50 will be described.

FIG. 2 is a block diagram showing an internal configuration of a device included in the maintenance support system 100. The maintenance support device 1 uses a server computer and includes a control unit 10, a storage unit 11, and a communication unit 12. In the present embodiment, the maintenance support device 1 will be described as one server computer, but the processing may be distributed among a plurality of server computers.

The control unit 10 is a processor using a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). The control unit 10 uses the built-in memory such as ROM and RAM to control each component unit to execute processing. The control unit 10 executes a process based on the maintenance support program 1P stored in the storage unit 11. The maintenance support program 1P includes a Web server program. The control unit 10 functions as a Web server that executes the provision of the Web page to the maintenance terminal device 2.

The storage unit 11 uses, for example, a hard disk or a non-volatile memory such as an SSD (Solid State Drive). The storage unit 11 stores the above-mentioned maintenance support program 1P. The maintenance support program 1P may be a maintenance support program 7P stored in the recording medium 7 read by the control unit 10 and duplicated in the storage unit 11. The storage unit 11 stores the repair flow. The storage unit 11 may store the repair flow according to the cause of the detected abnormality or the sign of the abnormality. The repair flow may include transition data of the repair support screen displayed on the maintenance terminal device 2. The storage unit 11 stores worker data including the worker ID of the maintenance worker. The worker data includes contact information such as a worker name and an e-mail address in association with the worker ID, and an approver ID of a superior who becomes an approver. The worker data is given a rank indicating the degree of skill of the worker.

The communication unit 12 is a communication device that realizes a communication connection and data transmission / reception via the network MN. Specifically, the communication unit 12 is a network card corresponding to the network MN. The communication unit 12 may realize communication via a router device (not shown) connected to the network MN and the communication network N. The control unit 10 transmits / receives data to / from the remote monitoring system 300 and the customer data management system 400 by the communication unit 12.

The maintenance terminal device 2 is a computer used by a maintenance worker. The maintenance terminal device 2 may be a desktop type or laptop type personal computer. The maintenance terminal device 2 may be a so-called smartphone or tablet type communication terminal. The maintenance terminal device 2 may be a head-mounted display capable of outputting visual instructions, or a glass-type wearable terminal device. The maintenance terminal device 2 includes a control unit 20, a storage unit 21, a first communication unit 22, a second communication unit 23, a display unit 24, and an operation unit 25. The maintenance terminal device 2 may include an imaging unit 26 as shown.

The control unit 20 is a processor using a CPU or GPU. The control unit 20 causes the display unit 24 to display the repair procedure based on the maintenance terminal program 2P stored in the storage unit 21. The control unit 20 executes a process of reading information data from the maintenance communication device 6. The control unit 20 executes information processing with the maintenance support device 1 by the Web browser included in the maintenance terminal program 2P.

The storage unit 21 is a non-volatile memory such as a hard disk or a flash memory. The storage unit 21 stores various programs including the maintenance terminal program 2P. The storage unit 21 stores screen data based on the maintenance terminal program 2P. The maintenance terminal program 2P may be a maintenance terminal program 8P stored in the recording medium 8 read by the control unit 20 and duplicated in the storage unit 21.

The first communication unit 22 is a communication device for realizing data communication via the communication network N or the network MN. The first communication unit 22 is a communication device such as a network card for wired communication, a wireless communication device for mobile communication connected to a base station BS (see FIG. 1), or a wireless communication device corresponding to connection to an access point AP. Is used.

The second communication unit 23 is a communication device for realizing data communication by communicating with the maintenance communication device 6. The second communication unit 23 may be a wireless communication device such as Wifi or Bluetooth (registered trademark). The second communication unit 23 may be a USB (Universal Serial Bus) interface.

The display unit 24 is a display such as a liquid crystal display or an organic EL (Electro Luminescence) display. The display unit 24 displays an operation screen based on the maintenance terminal program 2P of the control unit 20 and an image of a Web page provided by the maintenance support device 1. The display unit 24 is preferably a touch panel built-in display. The display unit 24 may be a display without a built-in touch panel.

The operation unit 25 is a user interface such as a keyboard and a pointing device that can input / output to / from the control unit 20, or a voice input unit. The operation unit 25 may use the touch panel of the display unit 24 or the physical buttons provided on the housing. The operation unit 25 notifies the control unit 20 of the operation information by the user.

The image pickup unit 26 outputs a captured image obtained by using the image pickup element. The control unit 20 can acquire an image captured by the image sensor of the image pickup unit 26 at an arbitrary timing.

The customer data management system 400 stores attribute data such as a customer's name or name, a customer's contact information, and an address in association with the customer ID. When the customer installs and manages a plurality of power storage devices 5 at different locations, the customer data management system 400 stores the location in association with the location ID that identifies the location. The customer data management system 400 stores the serial number of the power storage element 50 purchased by the customer in association with the customer ID. When the customer installs and manages a plurality of power storage devices 5 at different locations, the customer data management system 400 stores the customer ID and the serial number of the power storage element 50 installed in association with the location ID.

The remote monitoring system 300 sequentially stores the state data of the power storage element 50 in association with the serial number of the power storage element 50. The remote monitoring system 300 diagnoses whether or not the value indicated by the state data of the power storage element 50 is included in the predetermined range. The remote monitoring system 300 may derive diagnostic data including SOC (State Of Charge), SOH (State Of Health), predicted life, etc. for each power storage element 50 based on the state data for each power storage element 50. ..

The manufacturing management system may store the lot number at the time of manufacturing and the shipping date and time in association with the manufacturing number of the power storage element 50.

FIG. 3 is a block diagram showing an internal configuration of the maintenance communication device 6. The maintenance communication device 6 includes a control unit 60, a storage unit 61, a first communication unit 62, a second communication unit 63, and a third communication unit 64. The control unit 60 uses a CPU or a microprocessor. The storage unit 61 stores a predetermined program.

The storage unit 61 is a non-volatile memory such as a flash memory. The storage unit 61 stores the state data received from the power storage element 50.

The first communication unit 62 is a communication device that realizes a communication connection with a unit connected to the power storage element 50. In the present embodiment, the first communication unit 62 communicates with the unit of the power storage element by wireless communication such as Bluetooth (registered trademark).

The second communication unit 63 is a communication device that realizes a communication connection via the network CN. The maintenance communication device 6 can transmit the state data received from the power storage element 50 to the management device 51 by the second communication unit 63. When the power storage element 50 includes a battery management device having a communication function, the second communication unit 63 is unnecessary.

The third communication unit 64 is a communication device that realizes a communication connection between the maintenance communication device 6 and the maintenance terminal device 2. In the present embodiment, the third communication unit 64 is a USB interface. The third communication unit 64 may be a wireless communication device different from the first communication unit 62.

The control unit 60 of the maintenance communication device 6 periodically acquires state data from the power storage element 50 by the first communication unit 62 based on the program. The control unit 60 sequentially stores the acquired state data in the storage unit 61. When the power storage element 50 is a lead battery, the memory cycle is, for example, about once a day. The control unit 60 stores the acquired date and time in the storage unit 61 in association with the state data. The control unit 60 sequentially transmits the acquired state data from the second communication unit 63 to the management device 51. When the control unit 60 communicates with the maintenance terminal device 2 by the third communication unit 64 based on the program, the control unit 60 reads the state data from the storage unit 61 in response to an instruction from the maintenance terminal device 2, and reads the state data. 3 Transmission from the communication unit 64.

The maintenance terminal device 2 possessed by the maintenance worker acquires the state data accumulated in the maintenance communication device 6 at the time of performing periodic maintenance and inspection. The maintenance terminal device 2 transmits the state data to the remote monitoring system 300 via the network MN or the communication network N, and causes the remote monitoring system 300 to aggregate the state data. As a result, the remote monitoring system 300 can also aggregate the state data that is not transmitted to the remote monitoring system 300 via the customer's network CN.

The maintenance support system 100 of the present embodiment supports the maintenance management of the power storage element 50 as follows. FIG. 4 shows a repair sequence in the maintenance support system 100. FIG. 4 shows a procedure in the scene from detecting an abnormality to arranging repairs.

The remote monitoring system 300 detects an abnormality based on the state data aggregated via the operator's management device 51 or the maintenance communication device 6 (step S301). The remote monitoring system 300 notifies the administrator of the system including the power storage element 50 in which the abnormality is detected and the maintenance worker of the abnormality (step S302). Specifically, the notification in step S302 is notified to the contact information of the system administrator and the maintenance worker referred to by the customer management system. The maintenance terminal device 2 may be notified.

The remote monitoring system 300 transmits the state data related to the detected abnormality to the maintenance support device 1 in association with the identification data of the power storage element 50 in which the abnormality is detected (step S303).

The maintenance support device 1 receives the state data in the communication unit 12 in association with the identification data of the power storage element 50 in which the abnormality is detected (step S101). The control unit 10 acquires customer data including the delivery date from the customer management system based on the identification data of the power storage element 50 (step S102). The customer data may include the name and address of the delivery destination of the power storage element 50.

The control unit 10 narrows down the cause of the abnormality or the sign of the abnormality based on the received state data (step S103). In step S103, for example, the control unit 10 estimates the cause of the difference between the case where the voltage value included in the state data exceeds the upper limit of the normal range and the case where the voltage value exceeds the lower limit. The normal range is set for each type, type, or individual of the power storage element 50. The control unit 10 may estimate different causes depending on whether the internal resistance value exceeds the upper limit of the range set as the normal range or the lower limit. The control unit 10 may estimate different causes depending on whether the temperature included in the state data exceeds the upper limit set as the normal range and the lower limit.

The control unit 10 identifies the identification information of the article necessary for repair to suppress the progress of the abnormality caused by the narrowed down cause or the phenomenon that is a sign of the abnormality (step S104). The storage unit 11 may store necessary article identification information in advance for each cause narrowed down in step S103. The article is, for example, a replacement part for the power storage element 50. The article may be a measuring instrument for identifying a detailed cause.

The control unit 10 stores the repair arrangement data for arranging the repair as uncorresponding data in the storage unit 11 (step S105). The repair arrangement data includes identification data of the power storage element 50 for which an abnormality or a sign of abnormality is detected, and identification information of the narrowed down cause and the identified article. The control unit 10 transmits the repair arrangement data to the maintenance worker who repairs the system in which the abnormality is detected (step S106), and temporarily ends the process. The transmission in step S106 may be transmitted by e-mail to the e-mail address of the maintenance worker. A notification may be sent as a message to the maintenance terminal device 2 used by the maintenance worker.

The maintenance worker who receives the abnormality notification and the repair arrangement data uses the maintenance terminal device 2 in which the maintenance terminal program 2P is installed on the tablet terminal device, and goes to the installation location of the power storage element 50 in which the abnormality is detected. The maintenance worker securely connects the maintenance terminal device 2 to the maintenance support device 1 via the communication network N, and proceeds with the repair according to the procedure indicated by the exchange of data with the maintenance support device 1.

FIG. 5 shows a repair sequence in the maintenance support system 100. FIG. 5 shows the procedure at the repair site after the repair is arranged.

When the maintenance worker uses the maintenance terminal device 2 to perform a communication connection with the maintenance support device 1 via the first communication unit 22, the control unit 20 communicates with the maintenance support device 1 via the communication network N. (Step S201).

The control unit 20 requests the maintenance support device 1 for a repair support screen in association with identification data such as a serial number that identifies the power storage element 50 to be repaired (step S202).

When the control unit 10 of the maintenance support device 1 receives a request for the repair support screen (step S111), the control unit 10 reads out the repair arrangement data including the identification data from the storage unit 11 (step S112) in response to the request. The control unit 10 reads the repair flow corresponding to the repair arrangement data from the storage unit 11 (step S113). The control unit 10 specifies the repair procedure to be executed next based on the repair flow (step S114). The control unit 10 transmits a repair support screen including the specified repair procedure to the maintenance terminal device 2 (step S115). The repair support screen includes a message or image showing the repair procedure based on the repair flow corresponding to the narrowed down cause. The repair flow is stored in the storage unit 11. The repair support screen may include an interface for inputting whether or not the procedure was performed and what the result of the procedure was, in response to a message or image indicating the repair procedure.

In the maintenance terminal device 2, the first communication unit 22 receives the repair support screen transmitted from the maintenance support device 1 (step S203). The control unit 20 displays the repair support screen on the display unit 24 (step S204).

The repair support screen may include a message prompting the second communication unit 23 to make a communication connection between the maintenance terminal device 2 and the maintenance communication device 6. The control unit 20 communicates with the maintenance communication device 6 (step S205). The process of step S205 is unnecessary when the status data is normally transmitted from the maintenance communication device 6 to the remote monitoring system 300.

The control unit 20 accepts an operation by the operation unit 25 of the maintenance worker on the repair support screen indicating the repair procedure displayed on the display unit 24 (step S206). The control unit 20 transmits the operation result to the maintenance support device 1 (step S207). The operation received in step S206 may include measurement of state data via the maintenance communication device 6 and control of the power storage element 50 via the maintenance communication device 6.

The maintenance support device 1 receives the operation result on the repair support screen by the communication unit 12 (step S116). Each time the control unit 10 receives the operation result, the control unit 10 stores the operation result in the storage unit 11 as a repair log in association with the identification data of the power storage element 50 (step S117).

The control unit 10 determines whether or not the repair work has been completed based on the received operation result (step S118). If it is determined that the process has not been completed (S118: NO), the control unit 10 returns the process to step S114 and specifies the next procedure.

When it is determined in step S117 that the repair work is completed (S118: YES), the control unit 10 determines whether or not the next repair work is necessary (step S119). When it is determined in step S119 that it is necessary (S119: YES), the control unit 10 executes order preparation for an article such as a replacement member in cooperation with the customer data management system 400 (step S120). The control unit 10 ends the repair process once. The control unit 10 transmits an end screen including a message notifying the next repair work and order preparation to the maintenance terminal device 2 (step S121), and ends the process.

When it is determined in step S119 that it is unnecessary (S119: NO), the control unit 10 considers that the repair is completed and deletes the repair arrangement data from the storage unit 11 (step S122). The control unit 10 transmits an end screen including a message notifying the next repair work and order preparation to the maintenance terminal device 2 (S121), and ends the process.

If it is determined to be necessary in step S119, the sequence of FIG. 5 is started by the operation of the maintenance worker who has returned to the site together with the arranged replacement member and the like.

The maintenance terminal device 2 receives the end screen (step S208), disconnects the communication connection with the maintenance support device 1 (step S209), and ends the process.

6 and 7 show an example of the contents of the repair support screen 240 displayed on the maintenance terminal device 2. As shown in FIG. 6, the repair support screen 240 includes a message indicating a repair procedure. On the repair support screen 240 of FIG. 6, a message prompting to confirm whether or not an error in the maintenance communication device 6 is displayed is displayed. On the repair support screen 240, an interface 241 that accepts selection of whether or not it is displayed is displayed. When the maintenance worker selects one of the interfaces 241 by the operation unit 25, the operation result is transmitted to the maintenance support device 1 (S207). The maintenance support device 1 further narrows down the cause according to the operation result, and identifies the next repair procedure (S114).

FIG. 7 shows an example of the repair support screen 240 including the following repair procedure. The repair support screen 240 of FIG. 6 is displayed when the interface 241 is selected on the repair support screen 240 shown in FIG. The repair support screen 240 of FIG. 7 shows a procedure when the interface 241 without error display is selected on the repair support screen 240 of FIG. The repair support screen 240 of FIG. 7 includes a field for acquiring measurement data of the power storage element 50 via the maintenance communication device 6 and inputting the result.

FIG. 8 is a diagram showing a content example of the repair flow. As shown in FIG. 8, the storage unit 11 stores the repair flow for each of the narrowed down causes. FIG. 8 shows an example of the contents of the repair flow stored according to the causes of “DC ground fault”, “temperature rise”, “voltage abnormality”, and “resistance abnormality”. In the processing procedure shown in FIG. 5, when the cause is narrowed down to, for example, a "DC ground fault", the control unit 10 of the maintenance support device 1 uses the identification information of the cause of the "DC ground fault" in FIG. Read the associated repair flow (S113).

In the case of "DC ground fault", the control unit 10 outputs the repair support screen 240 as shown below. 9 and 10 show other content examples of the repair support screen 240. The repair support screen 240 includes an interface 241 that accepts the selection "Are there any leaks? / Yes / No" along with a message prompting confirmation "Please visually observe the appearance". When "Yes" is selected, the instruction message "Please replace the leaking power storage element" is output on the repair support screen 240. When "No" is selected, the repair support screen 240 of FIG. 9 transitions to the repair support screen 240 shown in FIG. On the repair support screen 240 of FIG. 10, an interface 241 that accepts selections such as "Are there white crystals? / Yes / No" is displayed. The control unit 10 repeats the process of reading and outputting the repair flow procedure until it is determined that the repair work has been completed. When the control unit 10 arrives at an instruction such as "replacement", "follow-up", or "continuous use" according to each option in the repair flow, it determines that the repair work has been completed.

In this way, the maintenance terminal device 2 displays the repair procedure based on the repair flow stored in advance as the best according to the narrowed down cause, based on the processing of the maintenance support device 1. As a result, repair work is carried out regardless of whether or not the person is an expert. Since the repair work proceeds quickly and the necessary tools are automatically arranged, it is expected that the repair efficiency will be improved.

(Modification example 1)
In the repair flow stored in the maintenance support device 1 of the above-described embodiment, the control unit 10 may not be able to identify the cause of the abnormality or the sign of the abnormality. Therefore, the maintenance support system 100 of the first modification can be configured to support a skilled person, so that the knowledge of the skilled person regarding the power storage element 50 can be widely utilized for rare cases and the like. For example, among the processing procedures shown in the sequence of FIG. 5, it is assumed that the repair procedure cannot be specified in step S114. In this case, the control unit 10 of the maintenance support device 1 advances the process to step S120, and arranges the next repair work including securing the schedule of the skilled worker. The arrangement includes notification of an e-mail or a message to a maintenance worker who is given the rank of a skilled worker by the control unit 10 of the maintenance support device 1. The arrangement includes notification by the control unit 10 to the manager of the maintenance worker. In this case, the manager allocates skilled and unskilled maintenance workers to the site.

FIG. 11 shows a repair sequence by the maintenance support system 100 in the first modification. The processing procedure shown in FIG. 11 shows a repair work procedure performed at a date and time when a skilled person can remotely support the operation. Of the procedures shown in FIG. 11, the procedures common to the processing procedure shown in FIG. 5 are given the same step numbers and detailed description thereof will be omitted.

The maintenance support device 1 receives the request for the repair support screen (S111). When the control unit 10 reads out the repair arrangement data (S112), the control unit 10 also communicates with the maintenance terminal device 2 used by an expert (step S121). The control unit 10 transmits the repair arrangement data including the identification data of the power storage element 50 to be repaired and the repair log already performed to the maintenance terminal device 2 of an expert (step S122).

The control unit 10 of the maintenance support device 1 mutually exchanges communication data necessary for video communication, chat, etc. between the maintenance terminal device 2 of the maintenance worker who actually performs the repair work and the maintenance terminal device 2 of the expert. It is transmitted to both sides (step S123). The video call or chat may be realized by a function included in the maintenance support system 100, that is, the program 2P for the maintenance terminal. The video call or chat may be realized by a service other than the maintenance support system 100.

The expert maintenance terminal device 2 receives the repair arrangement data and the repair log (step S221). The control unit 20 of the maintenance terminal device 2 acquires a history of state data from the remote monitoring system 300 based on the identification data of the power storage element 50 included in the repair arrangement data (step S222).

The maintenance terminal device 2 of the skilled worker and the maintenance terminal device 2 of the maintenance worker performing the repair work each receive the communication data transmitted from the maintenance support device 1 (steps S213 and S223). These maintenance terminal devices 2 communicate with each other (steps S214 and S224).

The control unit 20 of the maintenance terminal device 2 of an expert displays the status data acquired in step S222, the repair arrangement data received in step S221, and the repair log on the display unit 24 (step S225). The control unit 20 receives and transmits an instruction operation according to the exchange between the skilled operator and the maintenance worker (step S226). When the end operation is performed, the control unit 20 disconnects the communication connection (step S227) and ends the process.

When the control unit 20 of the maintenance terminal device 2 of the maintenance worker receives an instruction, the control unit 20 outputs the instruction to the display unit 24 or the like (step S215) and stores the repair work log (step S216). The repair work is completed after interacting with a skilled worker, and the maintenance worker performs the end operation. After transmitting the repair log to the maintenance support device 1, the control unit 20 disconnects the communication connection between the maintenance support device 1 and the maintenance terminal device 2 of an expert (step S217), and ends the process.

The maintenance support device 1 determines whether or not the repair work has been completed by exchanging information between the maintenance terminal devices 2 (step S124). If it is determined that the process has not been completed (S124: NO), the maintenance support device 1 returns the process to step S124 and waits. In step S124, the maintenance support device 1 determines the completion of the repair work by the notification from the maintenance terminal device 2 of the maintenance worker performing the repair work. The maintenance support device 1 may determine the completion of the repair work by another method.

If it is determined that the process is completed in step S124 (S124: YES), the maintenance support device 1 receives the repair log from the maintenance terminal device 2 of the maintenance worker performing the repair work (step S125), and ends the process.

In this way, the remote support of the skilled worker is also smoothly performed, so that the uniform repair work is carried out regardless of whether the maintenance worker is a skilled worker or not.

(Modification 2)
In the above-described embodiment, the maintenance support device 1 sets the detected abnormality or a sign of the abnormality from the upper limit of the range in which the measured value included in the state data is normal, as described in step S103 of the flowchart of FIG. We narrowed down based on the judgment of whether it is high or lower than the lower limit. This narrowing down may be realized by machine learning including deep learning.

In the above-described embodiment, the maintenance support device 1 specifies the repair procedure to be executed next based on the repair flow stored in the storage unit 11. The maintenance support device 1 may create a repair procedure model in which a skilled person has learned the repair procedure, specify the next repair procedure based on the repair procedure model, and transmit the repair procedure to the maintenance terminal device 2.

FIG. 12 is a block diagram showing the configuration of the maintenance support device 1 in the second modification. The maintenance support device 1 of the second modification stores the learning model 11M and the repair procedure model 12M in the storage unit 11 instead of the repair flow.

The learning model 11M is used to identify the cause of the power storage element 50 in which an abnormality or a sign of an abnormality is detected. The learning model 11M is learned to output the identification information of the cause together with the accuracy when the state data in which the abnormality is detected is input by using the neural network, for example. The learning model 11M may be trained using the state data whose cause has been identified.

The repair procedure model 12M is created based on the LSTM (Long Short-Term Memory) model and the RNN (Recurrent Neural Network) model. The repair procedure model 12M may be learned to interactively output the repair procedure to be performed next each time the identified cause is first input and then the addressed procedure is input. The repair procedure model 12M may be learned using a repair log in which the cause has been identified and the repair has been completed, particularly a repair log by an expert.

In this way, the maintenance support device 1 can accurately estimate the cause by utilizing the past repair results by using the learning model 11M to which deep learning is applied. Further, when the maintenance support device 1 presents the repair procedure using the repair procedure model 12M, the uniform repair work is carried out regardless of whether the worker is an expert or not.

The embodiments disclosed as described above are exemplary in all respects and are not restrictive. The scope of the present invention is indicated by the scope of claims and includes all modifications within the meaning and scope equivalent to the scope of claims.

100 Maintenance support system 1 Maintenance support device 10 Control unit 11 Storage unit 1P Maintenance support program 2 Maintenance terminal equipment 20 Control unit 21 Storage unit 2P Maintenance terminal program 300 Remote monitoring system 400 Customer data management system 6 Maintenance communication equipment

Claims (6)

The computer
Based on the measurement data acquired from the storage device that periodically acquires and sequentially stores the measurement data including the voltage value related to the energy storage element, one or more of the causes of the abnormality or the sign of the abnormality of the energy storage element can be determined from a plurality of possible causes. Narrow down to
A maintenance support method that identifies the identification data of the items required for repair according to the narrowed down causes. The maintenance support method according to claim 1, wherein the computer transmits repair arrangement data including the identification data to a maintenance worker. The maintenance support method according to claim 1 or 2, wherein the computer stores repair arrangement data including the identification data in a storage unit as unsupported data. The maintenance support method according to any one of claims 1 to 3, wherein the article required for the repair is at least one of a replacement member, a measuring instrument, and a tool. The cause of the abnormality or a sign of the abnormality is narrowed down by using a learning model trained to output the cause and accuracy when the measurement data is input. Any one of claims 1 to 4. Maintenance support method described in. On the computer
Based on the measurement data acquired from the storage device that periodically acquires and sequentially stores the measurement data including the voltage value related to the energy storage element, one or more of the causes of the abnormality or the sign of the abnormality of the energy storage element can be determined from a plurality of possible causes. Narrow down to
A computer program that performs a process to identify the identification data of an item required for repair according to the narrowed down cause.

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