Information processing device, method for displaying the status of a power storage unit, and computer program

Abstract

To clearly display a state of a power storage unit.SOLUTION: An information processing device 2 for displaying a state of a power storage unit U equipped with a plurality of power storage modules M including a plurality of power storage cells C comprises a display section 54, a storage section 52, and a control section 51. In the information processing device 2, the control section 51 performs: acquiring time-series state data of the power storage cells C included in each one of the power storage module M from the power storage unit U; allowing the display section 54 to display a plurality of display areas 72 corresponding to the power storage modules M; and graphically displaying the state data of the power storage cells C of the corresponding power storage module M at a certain time in each one of the display areas 72.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The technology disclosed in this specification relates to an information processing apparatus, a method for displaying the state of a power storage unit, and a computer program.

Background Art

[0002] Power storage facilities are used for the power supply of large moving objects and the storage of renewable energy. Patent Document 1 below discloses a technology for displaying battery information such as the deterioration rate of a battery, the fully charged capacity, and the state of charge (SOC).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Power storage facilities typically include a power storage unit (also referred to as a bank, block, or string, etc.) formed by connecting a plurality of power storage modules. Each power storage module includes a plurality of power storage cells. After the start of operation of the power storage facility, state data (operation log data) is acquired from all the power storage cells and accumulated so that it can be referred to when an abnormality occurs. Large-scale power storage facilities have a very large number of power storage cells, and the amount of state data acquired is enormous. There was room for improvement in clearly displaying the state of the power storage unit in order to quickly identify the location of an abnormality when an abnormality occurs and to restore the power storage facility. One aspect of the present invention aims to clearly display the state of a power storage unit.

Means for Solving the Problems

[0005] [[ID=An information processing device for displaying the status of a power storage unit comprising multiple power storage modules, each containing multiple power storage cells, comprises a display unit and a control unit. The control unit acquires time-series status data of the multiple power storage cells contained in each of the power storage modules from the power storage unit, displays multiple display areas corresponding to the multiple power storage modules on the display unit, and displays a graph of the status data of the power storage cells of the corresponding power storage module at a certain time in each of the display areas. [Effects of the Invention]

[0006] With the above configuration, the status of the energy storage unit can be displayed in an easy-to-understand manner. [Brief explanation of the drawing]

[0007] [Figure 1] Block diagram of the energy storage equipment and information processing device according to Embodiment 1 [Figure 2] Block diagram of the energy storage system [Figure 3] Block diagram showing part of the energy storage module [Figure 4] Perspective view of the energy storage module [Figure 5] Block diagram of an information processing device [Figure 6] Schematic diagram of the voltage display screen [Figure 7] Flowchart of the status display program [Figure 8] A schematic diagram showing the changes in the graph. [Figure 9] Block diagram of the energy storage equipment and information processing device according to Embodiment 2 [Modes for carrying out the invention]

[0008] [Summary of the Embodiment] (1) The information processing device according to the embodiment displays the status of a power storage unit comprising a plurality of power storage modules, each containing a plurality of power storage cells. The information processing device comprises a display unit and a control unit. The control unit acquires time-series status data of the plurality of power storage cells contained in each of the power storage modules from the power storage unit, causes the display unit to display a plurality of display areas corresponding to the plurality of power storage modules, and displays the status data of the power storage cells of the corresponding power storage module at a certain time in each of the display areas as a graph.

[0009] Here, "a certain time" may be any point in time selected by the operator, or it may be a predetermined time. "A certain time" will also be referred to as "the first time" below. One possible method for understanding the status of a battery storage unit is to display only one display area corresponding to one battery storage module on the display unit, and to display the status data of the battery cells contained in that battery storage module at a given time in that display area as a graph. However, with this method, only the status of the battery cells of one battery storage module is displayed, making it difficult to compare the status of multiple battery storage modules. Therefore, it is difficult to quickly identify the location of the abnormality when an abnormality occurs.

[0010] According to the information processing device described in (1) above, multiple display areas corresponding to multiple energy storage modules are displayed on the display unit, and the status data of the energy storage cells of the corresponding energy storage module at a given time is displayed graphically in each display area. In other words, the status of the energy storage cells of multiple energy storage modules at a given time is displayed graphically simultaneously. This makes it easy for the operator to compare the status of multiple energy storage modules. Therefore, the above-mentioned information processing device can display the status of the energy storage unit in an easy-to-understand manner. It also makes it possible to quickly identify the location of any abnormalities in the event of an error. Here, the "power storage unit" may be a bank formed by connecting a plurality of power storage modules in series, or may be formed by connecting a plurality of power storage modules in parallel. The acquisition of state data from the power storage unit may be performed via a recording medium, may be performed via a communication network, or may be performed by other methods.

[0011] (2) The plurality of display areas may be arranged and displayed with their scales in the first direction aligned.

[0012] According to the information processing apparatus in (2) above, since the scales in the first direction of each display area are aligned, it is easy to visually compare and grasp the states of the plurality of power storage modules.

[0013] (3) In the plurality of display areas, the second direction of each may indicate the arrangement positions of the plurality of power storage cells in the corresponding power storage module.

[0014] According to the information processing apparatus in (3) above, since the position in the second direction of each display area indicates the arrangement positions of the plurality of power storage cells in the power storage module, it is easy to visually and intuitively grasp which power storage cell the displayed state data indicates.

[0015] (4) A plurality of marks may be displayed in the display area, and one mark may indicate the state of one power storage cell.

[0016] According to the information processing apparatus in (4) above, since the state of each power storage cell is displayed (represented) by one mark, it is easy to visually and intuitively grasp the state of each power storage cell. Here, the "mark" may be a dot, but is not limited thereto, and may be a character or an icon.

[0017] (5) The information processing apparatus may further include a recording medium that stores the state data in the time series and that can be accessed by the control unit without communicating with a device outside the information processing apparatus for graph display, and a first change reception unit that receives a change in the time.

[0018] Here, the "device outside the information processing apparatus" means an external device that can communicate with the information processing apparatus via a network (including a public communication network such as the so-called Internet and a carrier network that realizes wireless communication according to a mobile communication standard), for example, a remote monitoring device for a power storage unit. <00ness="font-family: Arial, sans-serif;">

[0019] According to the information processing apparatus in (5) above, since the state data in the time series is stored in the recording medium that can be accessed by the control unit, when the state at a certain time is being displayed and the first change reception unit receives a change in the time, the state data at the changed time is quickly displayed (almost in real time with little time lag). Therefore, the burden and stress on an operator who analyzes a huge amount of state data can be significantly reduced.

[0020] (6) The first change reception unit may include a slider bar displayed on the display unit and a slider that moves on the slider bar.

[0021] As a method of receiving a change in the time, for example, a method of displaying a "forward button" for advancing the time and a "back button" for returning the time and receiving the change can be considered. In this method, when the "forward button" is pressed once, the state data (state data at the second time) acquired immediately after the currently displayed state data (state data at the first time) is graphically displayed, and when the "back button" is pressed once, the state data acquired immediately before the currently displayed state data is graphically displayed. When the state data is measured at short time intervals such as one second, even just grasping the change in the state data for one minute makes the operation of pressing the button complicated.

[0022] According to the information processing device described in (6) above, the operator can change the time by moving the slider. For example, when moving the slider using a computer input device such as a mouse, even with a full day's worth of status data, changes and transitions can be grasped with simple operations such as dragging the slider with the mouse or scrolling the mouse. The slider is also easy to operate when the display is a touch panel. Furthermore, since the overall period can be visually grasped by the slider bar, and the current state can be understood at what point in time it represents by the position of the slider, the burden and stress on the operator analyzing the vast amount of status data can be greatly reduced.

[0023] (7) The control unit may display on the display unit a second change acceptance unit for accepting changes to the energy storage unit that displays the status data of the energy storage cell on the display unit.

[0024] According to the information processing device described in (7) above, when there are multiple energy storage units (for example, banks), the status of each energy storage unit can be displayed in an easy-to-understand manner.

[0025] [Details of the embodiment] Embodiments of the present disclosure are described below. The present disclosure is not limited to these examples, but is indicated by the claims, and all modifications within the meaning and scope equivalent to the claims are intended. Embodiments of the present disclosure can be implemented in various forms, such as apparatus, methods, computer programs for realizing the functions of such apparatus or methods, and recording media on which such computer programs are stored.

[0026] <Embodiment 1> (1) Energy storage equipment and information processing equipment Referring to Figure 1, the energy storage equipment 1 and information processing device 2 according to Embodiment 1 will be described. The energy storage equipment 1 according to Embodiment 1 is a device that is mounted on a large mobile body 11 that is driven by an electric motor 12 and supplies power to the electric motor 12. An example of the large mobile body 11 is a port AGV (Automatic Guided Vehicle) that unmannedly transports containers in a port. The energy storage equipment 1 is equipped with 1000 or more energy storage cells C (see Figure 3). The information processing device 2 is a device that acquires time-series status data of energy storage cell C from the energy storage equipment 1 and displays it as a graph. The information processing device 2 can also be called a status display device.

[0027] (1-1) Energy storage equipment As shown in Figure 2, the energy storage system 1 comprises a plurality of (e.g., 10) energy storage units U connected in parallel, and an integrated monitoring unit 13 that monitors the plurality of energy storage units U. The energy storage units U are assigned unit numbers (U01 to U10) from one side to the other in the direction of their arrangement (X1 direction in Figure 2).

[0028] (1-1-1) Energy storage unit The energy storage unit U comprises a plurality (e.g., 15) energy storage modules M connected in series, a current sensor 20, a current interruption device 21, and individual monitoring units 22. The energy storage modules M are assigned module numbers (M01 to M15) from one side to the other in the direction of their arrangement (X2 direction in Figure 2).

[0029] As shown in Figure 3, the energy storage module M comprises a plurality (e.g., 12) energy storage cells C connected in series, a voltage sensor 30, and a plurality (e.g., two) temperature sensors 31 (31A and 31B).

[0030] The energy storage cell C is a rechargeable secondary battery, such as a lithium-ion secondary battery. The energy storage cells C that make up one energy storage module M are assigned cell numbers (C01 to C12) from one side to the other in the direction of their arrangement (X3 direction in Figure 3).

[0031] The voltage sensor 30 is installed in parallel with multiple energy storage cells C that are connected in series. The voltage sensor 30 measures the voltage value of each energy storage cell C at predetermined time intervals (hereinafter referred to as time series) and outputs it to the individual monitoring unit 22. The two temperature sensors 31 are spaced apart in the direction of the arrangement of the energy storage cells C. The two temperature sensors 31 measure the temperature of separate energy storage cells C in a time series. One of the two temperature sensors 31 is the main sensor, and the other is the sub-sensor. The temperature sensors 31 output the measured temperature to the individual monitoring unit 22. The reason for including the sub-sensor 31 is to issue an alarm if the measured value of either the main or sub-sensor exceeds the temperature threshold. There may be only one temperature sensor 31.

[0032] As shown in Figure 4, the energy storage module M has a case 32 (holding member) that houses the energy storage cells C. The 12 energy storage cells C are housed in the case 32 adjacent to each other. Instead of the case 32, a holding frame that holds multiple energy storage cells C together as a unit (module) may be used.

[0033] As shown in Figure 2, the current sensor 20 is connected in series with the energy storage module M. The current sensor 20 measures the discharge current flowing from the energy storage unit U to the electric motor 12, and the charging current flowing from a charging device (not shown) to the energy storage unit U in a time series, and outputs them to the individual monitoring unit 22. The current interruption device 21 is connected in series with the energy storage module M. The current interruption device 21 is normally closed and is opened (turned off) when an abnormality occurs in the energy storage unit U.

[0034] The individual monitoring unit 22 is a device that monitors the status of the energy storage unit U. The individual monitoring unit 22 includes a microcomputer with a CPU and RAM integrated into a single chip, interfaces to which various sensors (current sensor 20, voltage sensor 30, and temperature sensor 31) are connected, an external interface to which a removable non-volatile recording medium 40 is connected, and a communication unit for communicating with the integrated monitoring unit 13. The recording medium 40 may be, for example, a USB (Universal Serial Bus) memory or a rewritable card-type ROM. The individual monitoring unit 22 monitors the state of the energy storage unit U based on the measured values ​​(current, voltage, temperature) output from each sensor, and opens (turns off) the current cutoff device 21 in case of an abnormality. The individual monitoring unit 22 also performs processes such as estimating the charge state (SOC: State of Charge) of the energy storage unit U based on the measured current value, and recording the following data (A) to (F) on the recording medium 40 based on the measured values ​​output from each sensor.

[0035] (A) Voltage values ​​of each energy storage cell C (hereinafter referred to as cell voltage data) (B) Voltage value of energy storage unit U (hereinafter referred to as unit voltage data) (C) Temperature of energy storage module M (hereinafter referred to as module temperature data) (D) Current value of the energy storage unit U (hereinafter referred to as unit current data) (E) State of Charge of the energy storage unit (F)Alarm

[0036] Cell voltage data is an example of status data. Status data can also be referred to as log data or operation log data. Unit voltage data is the sum of the voltage values ​​of each energy storage module M. Module temperature data is the temperature measured by the main temperature sensor 31. Alarms are recorded when some abnormality occurs in the energy storage unit U and the individual monitoring unit 22 issues an alarm.

[0037] The order in which each of the above-mentioned data is recorded on the recording medium 40 is predetermined, and the unit number, module number, cell number, and measurement date (year, month, day, and time) of the data can be identified from the recorded order.

[0038] (1-1-2) Integrated Monitoring Department The integrated monitoring unit 13 is a device that monitors the status of multiple energy storage units U. The integrated monitoring unit 13 includes a microcomputer with a CPU and RAM integrated into a single chip, and a communication unit for communicating with the individual monitoring units 22.

[0039] The integrated monitoring unit 13 monitors the status of the energy storage unit U based on the data output from the individual monitoring unit 22, and if any abnormality occurs in the energy storage equipment 1, it performs processes such as notifying the equipment manager of the energy storage equipment 1 of the abnormality. As described above, in Embodiment 1, the individual monitoring unit 22 records data on the recording medium 40, but the individual monitoring unit 22 of each energy storage unit U may output data to the integrated monitoring unit 13, and the integrated monitoring unit 13 may record the data on the recording medium 40.

[0040] (1-2) Information Processing Device The information processing device 2 will be described with reference to Figure 5. In this embodiment, the information processing device 2 is a portable computer, such as a notebook computer, a tablet computer, or a smartphone. The information processing device 2 comprises a control unit 51, a storage unit 52, an external interface 53, a display unit 54, and an operation unit 55. The control unit 51 includes a CPU 51A and RAM 51B. The control unit 51 controls each part of the information processing device 2 by executing programs stored in the storage unit 52. The storage unit 52 is a storage device having a non-volatile recording medium such as a hard disk. The storage unit 52 stores various programs and data executed by the control unit 51. These various programs include a status display program (an example of a computer program), which will be described later.

[0041] The external interface 53 is an interface to which the recording medium 40 removed from the individual monitoring unit 22 is connected. The display unit 54 consists of a display device such as a liquid crystal display, a drive circuit for driving the display device, etc. The operation unit 55 consists of a keyboard, mouse, touch panel, etc.

[0042] (2) Status display program Referring to Figure 6, the status display program executed by the information processing device 2 will be described. The status display program is a program for understanding the status of the energy storage cell C. The status display program displays multiple display areas 72 corresponding to multiple energy storage modules M on the display unit 54, and in each display area 72, it graphically displays the cell voltage data of the energy storage cell C of the corresponding energy storage module M at a certain time (time 79).

[0043] (2-1) An example of a situation in which the status display program is used If any abnormality occurs in energy storage equipment 1, the equipment manager of energy storage equipment 1 will contact the manufacturer or maintenance service provider of energy storage equipment 1 to report the abnormality. The maintenance department that receives the report will dispatch a maintenance worker (an example of an operator) to the location where energy storage equipment 1 is installed (hereinafter referred to as the site).

[0044] The maintenance personnel dispatched to the site retrieve the recording media 40 from each individual monitoring unit 22 (see Figure 2), connect the retrieved recording media 40 to the external interface 53 of the information processing device 2 (see Figure 5), and copy the data to the storage unit 52. After copying the data to the storage unit 52, the maintenance personnel start the status display program to understand the status of the energy storage cell C. Here, we have explained the case where a maintenance worker is dispatched to the site, but it is also possible for the equipment manager of the energy storage facility 1 to retrieve the recording medium 40 and transmit the data to the maintenance department.

[0045] Instead of physically connecting the recording medium 40 to the external interface 53, the information processing device 2 may acquire state data (time-series data) of the energy storage cell C via a communication unit (not shown) connected to the integrated monitoring unit 13 and store it in the storage unit 52 (see Figure 5). Both the recording medium 40 connected to the external interface 53, the storage unit 52 that stores the state data of the energy storage cell C, and the RAM 51B included in the control unit 51 all correspond to recording media that the control unit 51 can access without communicating with an external device for graph display.

[0046] (2-2) Flowchart of the status display program Referring to Figure 7, a flowchart of the process executed by the control unit 51, which executes the status display program, will be described. This process starts when the status display program is launched.

[0047] In S101, the control unit 51 displays a period specification screen (not shown) on the display unit 54. The period specification screen accepts the specification of a period for the cell voltage data to be displayed. The period is specified, for example, by specifying a date. If a date is specified, the cell voltage data recorded between 0:00 AM and 0:00 PM (24:00) on the specified date will be displayed. The period specification is not limited to this and can be specified in any appropriate way. For example, multiple consecutive dates may be specified, or a date and a specific time period on that date may be specified. After the maintenance worker specifies the period on the period specification screen, they click a designated button displayed on the period specification screen to instruct the voltage display screen 71 (see Figure 6) to be displayed. When the button is clicked, the control unit 51 proceeds to S102.

[0048] In S102, the control unit 51 reads the cell voltage data measured during a specified period from the cell voltage data of each energy storage unit U stored in the memory unit 52 into the RAM 51B. In S103, the control unit 51 displays the voltage display screen 71 on the display unit 54.

[0049] (2-3) Voltage display screen As shown in Figure 6, the voltage display screen 71 consists of five tab screens 73, from "U01&U02" to "U09&U10". Maintenance personnel can select a tab screen 73 by clicking the tab 80 (an example of the second change reception section) in the upper left corner of each tab screen 73.

[0050] Each tab screen 73 displays information for two energy storage units U. Specifically, "U01&U02" displays information for energy storage units U01 and U02, "U03&U04" displays information for energy storage units U03 and U04, "U05&U06" displays information for energy storage units U05 and U06, "U07&U08" displays information for energy storage units U07 and U08, and "U09&U10" displays information for energy storage units U09 and U10. Immediately after the voltage display screen 71 is displayed, the "U01&U02" tab screen 73 is displayed first.

[0051] The reason for displaying two units at a time on the voltage display screen 71 is to accommodate the small screen size of the display unit 54, similar to that of a notebook personal computer. The method of displaying information for each energy storage unit U is not limited to this. For example, three units could be displayed at a time, or a scroll bar could be provided instead of tabs to scroll through and display all 10 units on one screen. If the screen size is large, all 10 units could be displayed on one screen.

[0052] Figure 6 shows the case where "U07 & U08" is selected. The tab screen 73 has two graph areas 74, two first change reception areas 75, a summary area 76, a setting area 77 for energy storage unit U07, and a setting area 78 for energy storage unit U08.

[0053] The upper graph area 74 is the area where the voltages of the 180 energy storage cells C that make up the energy storage unit U07 are displayed on the graph. The lower graph area 74 is the area where the voltages of the 180 energy storage cells C that make up the energy storage unit U08 are displayed on the graph. The vertical axis of the graph (an example of the first direction) shows the voltage of the energy storage cell C, and the horizontal axis (an example of the second direction) shows the energy storage cell C. The graph area 74 is divided horizontally into 15 equal sections, corresponding to the number of energy storage modules M that make up the energy storage unit U (15 in this case), resulting in 15 display areas 72. These display areas 72 are displayed side by side with the same scale for their respective vertical axes. These display areas 72 correspond to energy storage modules M01 to M15, from left to right. In other words, the order of the display areas 72 corresponds to the numbers of the energy storage modules M.

[0054] In one display area 72, the voltage of each of the 12 energy storage cells C constituting the corresponding energy storage module M at a given time is displayed as a single dot. The dots correspond to energy storage cells C01 through C12, from left to right. In other words, the horizontal direction of the display area 72 (an example of the second direction) indicates the arrangement of multiple energy storage cells C within the energy storage module M. Immediately after tab screen 73 is displayed, the graph of cell voltage data measured at the start time (or the time immediately preceding the start time) of the period specified on the period selection screen is initially displayed.

[0055] The first change reception unit 75 is a user interface that accepts changes to the time (a certain time) displayed on the graph. The upper first change reception unit 75 corresponds to the upper graph area 74. The lower first change reception unit 75 corresponds to the lower graph area 74. The first change acceptance unit 75 includes a slider bar 75A that is long in the left-right direction and a slider 75B that moves along the slider bar 75A. The left end of the slider bar 75A corresponds to the start time of the specified period. The right end corresponds to the end time of the specified period. The position of the slider 75B corresponds linearly to the time within the specified period. For example, a position located one-third the length of the slider bar 75A to the right of the left end of the slider bar 75A corresponds to the time when one-third of the time between the start time and the end time of the specified period has elapsed.

[0056] To the right of slider bar 75A, the time 79 corresponding to the current position of slider 75B is displayed. Immediately after the tab screen 73 is displayed, slider 75B is at the left end of slider bar 75A (the position corresponding to the start time of the specified period). Maintenance personnel can change the time within a specified period by moving slider 75B left or right. Since time 79 is displayed to the right of slider bar 75A, maintenance personnel can easily change to the desired time by moving slider 75B while viewing time 79. Once the maintenance personnel change the time, the cell voltage data measured at the changed time (or the time immediately preceding it) is displayed as a graph.

[0057] Explanations of summary area 76, setting area 77 for energy storage unit U07, and setting area 78 for energy storage unit U08 are omitted.

[0058] Referring to Figure 8, the changes and transitions in the graph when a maintenance worker moves the slider 75B will be explained. The control unit 51 displays the cell voltage data measured at the time corresponding to the new position (or the time immediately preceding that time) each time the position of the slider 75B changes. Since the cell voltage data is read into RAM 51B, the cell voltage data is displayed on the graph with virtually no delay, in the perception of a human. Therefore, as shown in Figure 8, when a maintenance worker moves the slider 75B, the graph changes like an animation, following the movement of the slider 75B.

[0059] In the example shown in Figure 8, the voltage of energy cell C in energy storage module M10 begins to fluctuate around 18:26. The fluctuation in energy cell C reaches its maximum around 21:50, and remains high thereafter. The changes in the graph are displayed like an animation, allowing maintenance personnel to intuitively understand which energy storage module M experienced voltage fluctuations in energy cell C, around what time the fluctuations began, and how large the fluctuations were.

[0060] (3) Effects of the embodiment According to the information processing device 2, multiple display areas 72 corresponding to multiple energy storage modules M are displayed on the display unit 54, and the cell voltage data of the energy storage cells C of the corresponding energy storage module M at a certain time (time 79, first time) is displayed graphically in each display area 72. In other words, the cell voltage data of the energy storage cells C of multiple energy storage modules M are displayed graphically simultaneously. This makes it easy for maintenance personnel to compare the status of multiple energy storage modules M. Thus, according to the information processing device 2, the status of the energy storage unit U can be displayed in an easy-to-understand manner.

[0061] According to the information processing device 2, the vertical axis (first direction) scale of each display area 72 is aligned, making it easy to compare the status of multiple energy storage modules M.

[0062] According to the information processing device 2, the horizontal axis (second direction) scale of each display area 72 indicates the arrangement of multiple energy storage cells C within the energy storage module M, making it easy to intuitively understand which energy storage cell C the displayed cell voltage data belongs to.

[0063] According to the information processing device 2, the cell voltage data of each energy storage cell C is displayed independently as a single dot, making it easy to grasp the voltage of each individual energy storage cell C.

[0064] According to the information processing device 2, when the time is changed, the cell voltage data for the changed time (second time) is displayed for all energy storage modules M. Therefore, the number of operations can be significantly reduced compared to operating the reception unit multiple times for each energy storage module M.

[0065] According to the information processing device 2, maintenance personnel can change the time by moving the slider 75B. For example, when moving the slider 75B using a mouse, even a day's worth of cell voltage data can be grasped with a simple operation of dragging the slider 75B with the mouse. Therefore, changes in cell voltage data can be grasped in a shorter time and with fewer operations compared to pressing a button. Since slider bar 75A represents the period from the start time to the end time of the specified period, maintenance personnel can easily intuitively understand where in the specified period the graph is displayed by looking at the position of slider 75B.

[0066] According to the information processing device 2, a tab 80 is displayed that accepts changes to the energy storage unit U to be displayed, so when there are multiple energy storage units U, the status of each energy storage unit U can be displayed in an easy-to-understand manner.

[0067] <Embodiment 2> Embodiment 2 will be explained with reference to Figure 9. In the previously described Embodiment 1, the energy storage equipment 1 is not connected to a communication network, and the cell voltage data of the energy storage cell C is recorded on the recording medium 40 of the individual monitoring unit 22. In contrast, in the energy storage equipment 1 according to Embodiment 2, the integrated monitoring unit 13 is wirelessly connected to the communication network via an access point (AP) 91.

[0068] The individual monitoring unit 22 according to Embodiment 2 outputs cell voltage data to the integrated monitoring unit 13. The integrated monitoring unit 13 transmits the cell voltage data output from the individual monitoring unit 22 to the server 90 via a communication network. The server 90 has a storage unit having a non-volatile recording medium such as a hard disk, and stores the cell voltage data received from the integrated monitoring unit 13 in the storage unit.

[0069] The information processing device 2 according to Embodiment 2 is also configured to communicate with the server 90. Maintenance personnel download cell voltage data from the server 90 to the information processing device 2 via the communication network. When downloading cell voltage data from the server 90 to the information processing device 2, the information processing device 2 may be a stationary computer rather than a portable one.

[0070] The location where server 90 is installed can be determined as appropriate. For example, server 90 may be installed on-site or in the maintenance department. Maintenance personnel may run a status display program on server 90. In that case, server 90 is an example of an information processing device.

[0071] <Other Embodiments> The present invention is not limited to the embodiments described above and in the drawings, and the following embodiments, for example, are also included in the technical scope of the present invention.

[0072] (1) In the above embodiment, an energy storage device 1 mounted on a large mobile body 11 was described as an example of an energy storage device, but the use of the energy storage device is not limited to this and can be used for various purposes such as an uninterruptible power supply system or an energy storage device for a solar power generation system.

[0073] (2) In the above embodiment, the case in which the energy storage equipment 1 is equipped with 10 energy storage units U was described as an example, but the number of energy storage units U can be determined as appropriate. The same applies to the number of energy storage modules M equipped in one energy storage unit U and the number of energy storage cells C equipped in one energy storage module M.

[0074] (3) In the above embodiment, the first change reception unit 75 was described as having a slider bar 75A and a slider 75B, but the user interface of the first change reception unit 75 is not limited to this. For example, the first change reception unit 75 may consist of a "forward button" and a "back button". Alternatively, the first change reception unit 75 may directly accept the changed time (hours, minutes, seconds) as a numerical value.

[0075] (4) In the above embodiment, tab 80 was described as an example of the second change acceptance unit, but the user interface of the second change acceptance unit is not limited to this. For example, a dropdown menu listing the energy storage units U may be displayed on the voltage display screen 71, and changes to the energy storage units U may be accepted via the dropdown menu. Alternatively, the selection of an energy storage unit U may be accepted on the period specification screen, and the status data of the energy storage unit U selected on the period specification screen may be displayed on the voltage display screen 71.

[0076] (5) In the above embodiment, cell voltage data was used as an example of state data for the energy storage cell C, but the state data for the energy storage cell C is not limited to this. For example, the state data may be the temperature, state of charge (SOC), or state of health (SOH) of the energy storage cell C.

[0077] (6) In the above embodiment, the recording medium 40 is detachably connected to the individual monitoring unit 22, and the case described as an example in which a maintenance worker retrieves the recording medium 40 from the individual monitoring unit 22 and connects it to the information processing device 2. In contrast, the individual monitoring unit 22 may be equipped with a storage unit having a recording medium such as a hard disk and a USB port to which a USB cable is connected, and the status data may be copied to the information processing device 2 via USB. Alternatively, the status data may be copied from the individual monitoring unit 22 to the information processing device 2 via wireless communication such as Bluetooth®. Alternatively, if the energy storage equipment 1 is not moved (for example, if it is an energy storage equipment installed in a predetermined location, such as an energy storage equipment for renewable energy), the integrated monitoring unit 13 may be equipped with a NIC (Network Interface Card) for wired connection to a communication network, and status data may be copied to the information processing device 2 via the communication network.

[0078] (7) In the above embodiment, a lithium-ion secondary battery was described as an example of a secondary battery, but the secondary battery is not limited to this. For example, the secondary battery may be a lead-acid battery.

[0079] (8) In the above embodiment, a secondary battery was described as an example of an energy storage cell C, but the energy storage cell C may be a capacitor that undergoes an electrochemical reaction. [Explanation of Symbols]

[0080] 2: Information Processing Device 40: Recording media (an example of a recording media) 51: Control Unit 52: Memory unit (an example of a recording medium) 54: Display section 72: Display area 75: First Change Reception Department 75A: Slider bar 75B: Slider 80: Tab (Example of the second change request section) C: Energy storage cell M: Energy storage module U: Energy storage unit

Claims

1. An information processing device for displaying the status of an energy storage unit comprising multiple energy storage modules, each containing multiple energy storage cells, Display unit and Control unit and Equipped with, The control unit, Time-series state data of the multiple energy storage cells contained in each of the energy storage modules is obtained from the energy storage unit. Multiple display areas corresponding to multiple energy storage modules are displayed on the display unit, and the status data of the energy storage cells of the corresponding energy storage module at a certain time is displayed graphically in each of the display areas. The information processing device is The aforementioned time-series state data is stored, and the control unit has a recording medium that can be accessed without communicating with a device outside the information processing device for graph display, A first change acceptance unit that accepts changes to the aforementioned time, Furthermore, The first change acceptance unit is an information processing device having a slider bar and a slider that moves along the slider bar, which are displayed on the display unit.

2. An information processing apparatus according to claim 1, The aforementioned multiple display areas are arranged and displayed side by side, with their respective scales aligned in the first direction, in an information processing device.

3. An information processing apparatus according to claim 1 or claim 2, The information processing device wherein each of the plurality of display areas indicates the arrangement position of the plurality of energy storage cells within the corresponding energy storage module in its second direction.

4. The information processing apparatus according to claim 3, An information processing device in which multiple marks are displayed in the display area, and each mark indicates the state of one of the energy storage cells.

5. An information processing apparatus according to any one of claims 1 to 4, The control unit is an information processing device that causes the display unit to display a second change acceptance unit for accepting changes to the energy storage unit, which displays the status data of the energy storage cell on the display unit.

6. A method for displaying the status of an energy storage unit comprising multiple energy storage modules, each containing multiple energy storage cells, Time-series state data of the multiple energy storage cells contained in each of the energy storage modules is obtained from the energy storage unit. Multiple display areas corresponding to multiple energy storage modules are displayed on the display unit, and the status data of the energy storage cells of the corresponding energy storage module at a certain time is displayed graphically in each of the display areas. The time-series state data acquired from the energy storage unit is stored in a recording medium that can be accessed without communicating with a device outside the information processing device in order to display a graph. A method for displaying the status of a power storage unit, wherein a change in the time is accepted by a first change acceptance unit having a slider bar and a slider that moves on the slider bar, which is displayed on the display unit.

7. A computer program that causes a computer to display the status of an energy storage unit comprising multiple energy storage modules, each containing multiple energy storage cells, Time-series state data of the multiple energy storage cells contained in each of the energy storage modules is obtained from the energy storage unit. Multiple display areas corresponding to multiple energy storage modules are displayed on the computer's display unit, and the status data of the energy storage cells of the corresponding energy storage module at a certain time is displayed graphically in each of the display areas. The time-series state data acquired from the energy storage unit is stored in a recording medium that can be accessed without communicating with a device outside the information processing device in order to display a graph. The change of the time is accepted by a first change acceptance unit, which has a slider bar and a slider that moves along the slider bar, and is displayed on the aforementioned display unit. A computer program that causes the aforementioned computer to perform a process.

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