Information processing method, information processing device, and information processing program

Abstract

This information processing device acquires a plurality of abnormality items generated in a plurality of batteries, determines whether each of the plurality of abnormality items is an action-required item that is an abnormal item requiring an action or a continuous monitoring item that is an abnormal item requiring continuous state monitoring, and when the plurality of abnormality items include one or more action-required items and one or more continuous monitoring items, displays the one or more action-required items and the one or more continuous monitoring items in mutually different modes.

Description

Information processing method, information processing device, and information processing program

[0001] The present disclosure relates to a technique for displaying multiple abnormalities that have occurred in each of multiple batteries.

[0002] Patent Document 1 discloses a technique for highlighting items for which coefficients calculated by an algorithm do not satisfy predetermined conditions when abnormal deterioration is determined based on the battery operation history.

[0003] However, the conventional technology shown in Patent Document 1 merely displays any abnormalities that have occurred in the battery, and is insufficient to assist the user (operator) in determining which abnormalities require action and which abnormalities require ongoing checks.

[0004] Japanese Patent Application Laid-Open No. 2018-169161

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a technology that appropriately assists users in determining which abnormal items require action and which abnormal items require continued check.

[0006] An information processing method in one aspect of the present disclosure is an information processing method in a computer, which acquires multiple abnormal items that have occurred in each of multiple batteries, determines whether each of the multiple abnormal items is an item requiring action, which is an abnormal item that requires response, or an item requiring continued check, which is an abnormal item that requires continuous status monitoring, and if the multiple abnormal items include one or more items requiring action and one or more items requiring continued check, displays the one or more items requiring action and the one or more items requiring continued check in mutually different manners.

[0007] According to the present disclosure, it is possible to appropriately assist a user in determining which abnormal items require action and which abnormal items require continued check.

[0008] 1 is a diagram illustrating an overall configuration of a battery management system according to an embodiment of the present disclosure; FIG. 2 is a diagram illustrating a graph screen according to the present embodiment; FIG. 3 is a diagram illustrating screen transitions from the graph screen to a list screen; FIG. 4 is a diagram illustrating screen transitions from the graph screen to the list screen; FIG. 5 is a diagram illustrating screen transitions from the list screen to an abnormality list screen; FIG. 6 is a flowchart illustrating an abnormality determination process according to the present embodiment; FIG. 7 is a flowchart illustrating a determination process when the abnormality type is battery deterioration rate; FIG. 8 is a flowchart illustrating a determination process when the abnormality type is charging temperature; FIG. 9 is a flowchart illustrating a determination process when the abnormality type is charging time; FIG. 10 is a flowchart illustrating a determination process when the abnormality type is a short circuit; FIG. 11 is a flowchart illustrating a display process of the list screen according to the present embodiment;

[0009] (Findings underlying the present disclosure) Research is currently underway into technology that graphically displays the temporal change in the number of abnormalities occurring for multiple managed batteries. A user determines what future action should be taken for each battery from a display screen that displays the temporal change in the number of abnormalities. Serious abnormalities require immediate action, while less serious abnormalities require continuous status monitoring. Prior art, including Patent Document 1, does not distinguish between action-requiring items requiring immediate action and ongoing status monitoring items when displaying the abnormalities for multiple batteries. Therefore, prior art is insufficient to assist a user (operator) in determining which abnormalities require action and which require ongoing status monitoring.

[0010] Therefore, the inventors have come up with the idea of ​​the present disclosure based on the knowledge that if it is possible to distinguish which abnormal items require action and which abnormal items require continued check for multiple batteries under management, it will be possible to appropriately assist users in making such decisions.

[0011] (1) An information processing method in one aspect of the present disclosure is an information processing method in a computer, which acquires multiple abnormal items that have occurred in each of multiple batteries, determines whether each of the multiple abnormal items is an action-requiring item that requires action, or an ongoing check item that requires continuous status monitoring, and if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, displays the one or more action-requiring items and the one or more ongoing check items in different ways.

[0012] According to this configuration, when there are one or more action-requiring items and one or more continuing check items, the two are displayed in different formats, which can appropriately support the user in determining which abnormal items are action-requiring items and which abnormal items are continuing check items. Also, because the one or more action-requiring items and the one or more continuing check items are displayed in different formats, the user does not need to display various images to determine which abnormal items are action-requiring items and which abnormal items are continuing check items, which can reduce the resources required for display.

[0013] (2) In the information processing method described in (1) above, in the judgment, the abnormal item that satisfies at least one judgment condition out of a plurality of judgment conditions may be judged as the item for continued confirmation, and the abnormal item that satisfies a predetermined number or more of the plurality of judgment conditions may be judged as the item requiring attention.

[0014] According to this configuration, it is possible to accurately distinguish between items requiring continued confirmation and items requiring action.

[0015] (3) In the information processing method described in (2) above, the plurality of determination conditions may include a determination condition that a battery deterioration rate of the battery in which the abnormality has occurred is equal to or greater than a predetermined value.

[0016] According to this configuration, it is possible to accurately distinguish between items that need to be checked continuously and items that require action, taking into consideration the rate of battery deterioration.

[0017] (4) In the information processing method described in (2) or (3) above, the plurality of determination conditions may include a determination condition that the charging time of the battery in which the abnormality has occurred is equal to or greater than a predetermined value.

[0018] With this configuration, it is possible to accurately distinguish between items to be checked continuously and items requiring action, taking into consideration the charging time of the battery.

[0019] (5) In the information processing method described in any one of (2) to (4) above, the plurality of determination conditions may include a determination condition that the charging temperature of the battery in which the abnormality has occurred is equal to or higher than a predetermined value.

[0020] With this configuration, it is possible to accurately distinguish between items that need to be checked continuously and items that require action, taking into consideration the temperature of the battery during charging.

[0021] (6) In the information processing method described in any of (3) to (5) above, the predetermined value may be set according to the type of battery, and may be updated based on the operation information when the number of pieces of operation information obtained for the battery is equal to or greater than a predetermined number.

[0022] This configuration allows the predetermined value to be set appropriately depending on the battery type, and also depending on the number of battery operation information acquisitions (i.e., the battery operating time), thereby improving the accuracy of distinguishing between items requiring continued check and items requiring action.

[0023] (7) In the information processing method described in any of (1) to (6) above, an abnormality level may be obtained that corresponds to each of the plurality of abnormality items and indicates the degree of severity of the abnormality indicated by the abnormality item, and in the determination, each of the plurality of abnormality items may be determined, based on the abnormality level, as to whether it is an item requiring response or an item requiring continued confirmation.

[0024] According to this configuration, it is possible to accurately distinguish between items requiring action and items requiring continued check using the abnormality level.

[0025] (8) In the information processing method described in (7) above, if the degree of abnormality is equal to or greater than a first threshold, the abnormal item corresponding to the degree of abnormality may be determined to be the item requiring further confirmation, and if the degree of abnormality is equal to or greater than a second threshold that is higher than the first threshold, the abnormal item corresponding to the degree of abnormality may be determined to be the item requiring further attention.

[0026] According to this configuration, the abnormality level is compared with the first threshold value and the second threshold value that is higher than the first threshold value, so that it is possible to accurately distinguish between items requiring action and items requiring continued check.

[0027] (9) In the information processing method described in (8) above, the first threshold value and the second threshold value may be set according to the type of the battery, and may be updated based on the operation information when the number of pieces of operation information obtained for the battery is equal to or greater than a predetermined number.

[0028] This configuration allows the first and second thresholds to be set appropriately depending on the type of battery, as well as the number of battery operation information acquisitions, i.e., the operating time of the battery, thereby improving the accuracy of distinguishing between items requiring continued check and items requiring action.

[0029] (10) In the information processing method described in any of (1) to (9) above, when the selection of one abnormal item among the one or more action-requiring items and the one or more continuing confirmation items is accepted, information indicating that the selection has been accepted may be added to the one abnormal item, and the one abnormal item may be displayed in a manner different from the one or more action-requiring items and the one or more continuing items to which information indicating that the selection has been accepted has not been added.

[0030] This configuration makes it possible to manage whether one or more action-requiring items and one or more continued check items have been selected. Furthermore, it is possible to present to the user whether one or more action-requiring items and one or more continued check items have been selected.

[0031] (11) In the information processing method described in any of (1) to (10) above, the number of operating days of the battery in which an abnormal item determined to be the item requiring action or the item for continued check occurred may be further obtained, and information indicating that an initial abnormality may exist may be attached to an abnormal item whose number of operating days is less than a predetermined number of days, and the abnormal item may be displayed in a manner different from an abnormal item that is not attached with information indicating that the abnormality may exist.

[0032] According to this configuration, the presence or absence of an initial abnormality can be managed, and the presence or absence of an initial abnormality can be presented to the user.

[0033] (12) In the information processing method described in any of (1) to (11) above, when a selection of any one abnormal item among the one or more items requiring action and the one or more items requiring continued confirmation is accepted, the abnormal item corresponding to the one abnormal item may be displayed in a manner different from abnormal items that do not correspond to the one abnormal item.

[0034] According to this configuration, abnormal items corresponding to one abnormal item selected from one or more items requiring action and one or more items for continued confirmation can be presented in a distinguishable manner from abnormal items that do not correspond to the one abnormal item.

[0035] (13) In the information processing method described in (12) above, the abnormal item corresponding to the one abnormal item may be the item requiring action or the item requiring continued confirmation during a predetermined period based on the date and time of occurrence of the one abnormal item.

[0036] According to this configuration, it is possible to present, as abnormality items corresponding to the selected one abnormality item, items requiring action or items requiring continued check that have occurred within a predetermined period of time.

[0037] (14) In the information processing method described in (12) above, the abnormality item corresponding to the one abnormality item may be the item requiring action or the item requiring continued check for the same battery as the battery corresponding to the one abnormality item.

[0038] According to this configuration, it is possible to present the items requiring action or items requiring continued check for the same battery as the battery in which the selected one abnormality has occurred as abnormality items corresponding to the one abnormality.

[0039] (15) In the information processing method described in any of (1) to (14) above, when the selection of any one abnormal item from among the one or more items requiring action and the one or more items for continued check is accepted, the abnormal items for a predetermined period in the battery in which the one abnormal item occurred may be obtained, and the abnormal item may be further displayed.

[0040] According to this configuration, it is possible to display a list of the past abnormality history for a predetermined period of time for one selected abnormality item.

[0041] (16) In the information processing method described in any of (1) to (15) above, operation information consisting of one or more items for each of the plurality of batteries may be acquired, and when a selection of any one of the one or more action-requiring items is accepted, operation information for the battery in which the selected action-requiring item has occurred may be displayed, and in the display of the operation information, operation information for items related to the one action-requiring item may be highlighted.

[0042] According to this configuration, the operation information relating to the selected one abnormality item can be highlighted in the operation information of the battery in which the selected one abnormality item has occurred.

[0043] (17) In another aspect of the present disclosure, an information processing device includes a processor, which acquires multiple abnormal items that have occurred in each of multiple batteries, determines whether each of the multiple abnormal items is an action-requiring item that requires action, or an ongoing check item that requires continuous status monitoring, and if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, displays the one or more action-requiring items and the one or more ongoing check items in different manners.

[0044] According to this configuration, it is possible to provide an information processing device that can appropriately support the user in determining which abnormal items require action and which abnormal items require continued check.

[0045] (18) In another aspect of the present disclosure, an information processing program causes a computer to acquire multiple abnormal items that have occurred in each of multiple batteries, determine whether each of the multiple abnormal items is an action-requiring item that requires a response, or an ongoing check item that requires continuous status monitoring, and, if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, display the one or more action-requiring items and the one or more ongoing check items in different formats.

[0046] According to this configuration, it is possible to provide an information processing program that can appropriately assist the user in determining which abnormal items require action and which abnormal items require continued check.

[0047] The present disclosure can also be realized as an information processing system (battery management system) that operates according to such a program. Needless to say, such a computer program can be distributed on a non-transitory computer-readable recording medium such as a CD-ROM or via a communication network such as the Internet.

[0048] Note that each of the embodiments described below represents a specific example of the present disclosure. The numerical values, shapes, components, steps, and step orders shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept are described as optional components. Furthermore, in all of the embodiments, the respective contents can be combined.

[0049] (Embodiment) FIG. 1 is a diagram showing the overall configuration of a battery management system according to an embodiment of the present disclosure.

[0050] 1 includes a plurality of batteries 1, a server 2, and an information terminal 3. The server 2 is an example of an information processing device.

[0051] The battery 1 includes multiple secondary batteries, which store power by charging and supply power by discharging. The secondary batteries are, for example, lead-acid batteries or lithium-ion batteries. The battery 1 is a battery pack made up of multiple battery cells. The battery 1 is installed as a power source in various devices. The battery 1 is installed, for example, in an electrically powered mobile object such as an electric vehicle.

[0052] The battery 1 includes a communication unit 11 , a control unit 12 , a memory 13 , and a measurement unit 14 .

[0053] The measurement unit 14 includes sensors such as a current sensor, a voltage sensor, and a temperature sensor, and a processor that processes measurement data measured by these sensors. The measurement unit 14 measures multiple status items of the battery 1. The measurement unit 14 measures multiple status items such as SOH (state of health), charging time, and charging temperature. The charging time includes the CV charging time from the start to the end of constant voltage charging. The battery 1 is subjected to constant current charging (CC charging) until the SOC reaches a predetermined value (e.g., 98%), and then to constant voltage charging from the predetermined value or higher until the SOC reaches 100%. The CV charging time refers to the time it takes for this constant voltage charging to be performed. As the battery 1 deteriorates, the time from the start of constant voltage charging until the SOC reaches 100% becomes longer, so the CV charging time is an indicator of battery 1 deterioration.

[0054] The charging temperature includes a charging temperature difference, which is the difference between the maximum and minimum temperatures of the battery 1 during the charging period of the battery 1. When a short circuit occurs in the battery 1, the charging temperature difference increases.

[0055] Additionally, the measurement unit 14 may measure multiple status items such as FET (Field Effect Transistor) temperature, cell temperature, pack temperature, ambient temperature, cell current, cell voltage, pack current, pack voltage, pack resistance, number of charges, cumulative charge amount, cumulative discharge amount, pack full charge amount, and SOC (State of Charge). The measurement unit 14 stores the measured values ​​of the multiple status items in the memory 13. Note that the multiple status items are not limited to these, and may simply be battery temperature, battery current, or battery voltage, or may also be the usage time of the battery 1 or the mileage of an electric vehicle equipped with the battery 1.

[0056] The memory 13 is configured with a storage device capable of storing various types of information, such as a random access memory (RAM), a solid state drive (SSD), or a flash memory. The memory 13 stores operation information of a plurality of status items measured by the measurement unit 14.

[0057] The control unit 12 is configured with a processor such as a central processing unit (CPU). The control unit 12 reads out operation information for a plurality of status items from the memory 13 and generates battery log information including a battery ID for identifying the battery 1, the read operation information for the plurality of status items, and the acquisition date and time of the operation information. The control unit 12 outputs the generated battery log information to the communication unit 11.

[0058] The communication unit 11 is composed of a communication device that connects the battery 1 to the network 4. The communication unit 11 transmits battery log information of the battery 1 to the server 2. The battery log information includes the battery ID of the battery 1, operation information of multiple status items of the battery 1, and the acquisition date and time. The communication unit 11 periodically transmits the battery log information to the server 2. For example, the communication unit 11 may transmit battery log information including operation information of multiple status items measured in one minute to the server 2 every minute.

[0059] In this embodiment, the battery 1 is equipped with a communication unit 11, a control unit 12, a memory 13, and a measurement unit 14, but the present disclosure is not limited to this, and an apparatus equipped with the battery 1 may also be equipped with a communication unit 11, a control unit 12, a memory 13, and a measurement unit 14.

[0060] The server 2 is communicably connected to the plurality of batteries 1 and the information terminal 3 via a network 4. The network 4 is, for example, the Internet.

[0061] The server 2 includes a communication unit 21 , a control unit 22 , and a memory 23 .

[0062] The communication unit 21 is configured with a communication device that connects the battery 1 to the network 4. The communication unit 21 receives battery log information transmitted by the battery 1.

[0063] The memory 23 is a storage device capable of storing various types of information, such as a RAM, an SSD, a HDD (Hard Disk Drive), or a flash memory. The memory 23 stores battery log information. The memory 23 stores operation information for a plurality of status items in association with a battery ID. The memory 23 stores an abnormality database. The abnormality database stores abnormality items. The abnormality items are battery log information indicating that the operation information is abnormal among the battery log information stored in the memory 23, or information generated based on the battery log information.

[0064] The communication unit 21 is configured by a communication device that connects the server 2 to the network 4. The communication unit 21 transmits to the information terminal 3 display data for various screens such as a graph screen 200 (see FIG. 2) described later.

[0065] The communication unit 21 also receives a selection instruction transmitted by the information terminal 3. The selection instruction includes one abnormality item for one battery selected by the user via the graph screen 200.

[0066] The control unit 22 is configured with a processor such as a CPU, for example. The control unit 22 stores the battery log information received by the communication unit 21 in the memory 23. The control unit 22 acquires from the anomaly database in the memory 23 a plurality of anomaly items that have occurred in each of the plurality of batteries 1.

[0067] The control unit 22 determines whether each of the acquired multiple abnormality items is an action-requiring item, which is an abnormality item that requires action, or an ongoing check item, which is an abnormality item that requires continuous status monitoring. "Action-requiring" means that the battery 1 cannot be operated as is and some kind of action (e.g., replacement or repair) must be taken by an operator. "Continuous status monitoring is required" means that the battery 1 must be operated as is and the status of the battery 1 must be monitored for a while.

[0068] When the multiple abnormal items include one or more action-requiring items and one or more continued check items, the control unit 22 displays the one or more action-requiring items and the one or more continued check items in different formats. The control unit 22 displays the one or more action-requiring items and the one or more continued check items on a graph screen 200 ( FIG. 2 ), which will be described later. The graph screen 200 displays the multiple abnormal items of the multiple batteries 1 in chronological order for each of the multiple batteries 1. The control unit 22 generates display data for the graph screen 200 and transmits the generated display data to the information terminal 3 using the communication unit 21. The graph screen 200 is then displayed on the display unit 34 of the information terminal 3. Note that when the multiple abnormal items do not include both one or more action-requiring items and one or more continued check items, the control unit 22 may display the graph screen 200 in a manner that does not distinguish between the action-requiring items and the continued check items.

[0069] The control unit 22 determines an abnormal item that satisfies at least one of a plurality of predetermined judgment conditions as an item requiring continued check. On the other hand, the control unit 22 determines an abnormal item that satisfies a predetermined number or more of the plurality of judgment conditions as an item requiring action. For example, there are n (n is an integer equal to or greater than 2) judgment conditions, and the control unit 22 determines an abnormal item that satisfies all n judgment conditions as an item requiring action. For example, the control unit 22 determines an abnormal item that does not satisfy all n judgment conditions as an item requiring continued check.

[0070] The multiple determination conditions include a determination condition that the battery deterioration rate of the battery 1 in which the abnormality occurred is equal to or greater than a predetermined value. The battery deterioration rate is calculated based on the transition of the SOH. The battery deterioration rate is calculated using the following formula (1).

[0071] (Current SOH value - Previous SOH value) / √ Number of days elapsed... (1)

[0072] The number of elapsed days is the difference in number of days between the measurement date of the current SOH value and the measurement date of the previous SOH value. Here, the number of elapsed days is used, but the elapsed time may also be used. In this case, the elapsed time is the difference in time between the measurement time of the current SOH value and the measurement time of the previous SOH value. The square root of the number of elapsed days is used because SOH generally has a root law that linearly decreases with the root of the number of elapsed days.

[0073] The multiple determination conditions include a determination condition that the charging time of the battery 1 in which the abnormality occurred is equal to or greater than a predetermined value. The charging time can be the CV charging time described above. However, this is just one example, and the charging time may also be the CC charging time or the time from the start of charging until the SOC reaches 100%.

[0074] The multiple determination conditions include a determination condition that the charging temperature of the battery 1 in which the abnormality occurred is equal to or higher than a predetermined value. The charging temperature has been described in detail above. The multiple determination conditions are not limited to these three determination conditions, and other determination conditions may be used. For example, the determination conditions may include FET (Field Effect Transistor) temperature, cell temperature, pack temperature, ambient temperature, cell current, cell voltage, pack current, pack voltage, pack resistance, number of charges, cumulative charge amount, cumulative discharge amount, pack full charge amount, and SOC (State of Charge).

[0075] The predetermined value used to determine whether multiple determination conditions are met is set according to the type of battery 1, and is updated based on the operation information when the number of acquired pieces of operation information for battery 1 is equal to or exceeds a predetermined number. Different values ​​are used as the predetermined value depending on the determination conditions. The first threshold value described below is used as the predetermined value. However, this is just one example, and the second threshold value described below may also be used as the predetermined value.

[0076] The control unit 22 acquires an abnormality level corresponding to each of the plurality of abnormality items, the abnormality level being a degree of severity of the abnormality indicated by the abnormality item. The control unit 22 may determine whether each of the plurality of abnormality items is an item requiring action or an item requiring continued check based on the abnormality level.

[0077] In detail, when the abnormality level is equal to or greater than a first threshold, the control unit 22 determines that the abnormality item corresponding to the abnormality level is an item requiring continued check, and when the abnormality level is equal to or greater than a second threshold higher than the first threshold, the control unit 22 determines that the abnormality item corresponding to the abnormality level is an item requiring attention. Examples of abnormality items are the battery deterioration rate, charging time, and charging temperature. Therefore, the abnormality level includes values ​​of the battery deterioration rate, charging time, and charging temperature. Note that, depending on the abnormality item, the value of the abnormality level may decrease as the deterioration of the battery 1 progresses, while the value may increase. Therefore, in this embodiment, the absolute values ​​of various values ​​are used as the abnormality level.

[0078] Furthermore, the abnormality item may include a short circuit in the battery 1. For the short circuit abnormality item, the control unit 22 determines that the short circuit abnormality item requires action if it satisfies all three of the above-mentioned determination conditions (battery deterioration rate, charging time, and charging temperature), and determines that the short circuit abnormality item requires continued check if it satisfies one or more and two or less determination conditions.

[0079] The control unit 22 sets the first threshold and the second threshold according to the type of battery 1. When the number of pieces of operation information acquired for the battery 1 is equal to or greater than a predetermined number, the control unit 22 updates the first threshold and the second threshold based on the operation information. Because the battery 1 deteriorates as its operating time increases, if the first threshold and the second threshold are set to fixed values, it may not be possible to properly determine the degree of abnormality. As the operating time of the battery 1 increases, the number of pieces of operation information acquired for the battery 1 increases. Therefore, the control unit 22 updates the first threshold and the second threshold when the number of pieces of operation information acquired is equal to or greater than a predetermined number.

[0080] Specifically, the control unit 22 classifies the state of each battery into an initial state, a developing state, and a mature state according to the number of pieces of operational information acquired. Then, for a battery 1 in an initial state, the control unit 22 determines the first threshold value and the second threshold value based on the specifications of the battery 1, etc.

[0081] For a battery 1 in a developing state, the control unit 22 determines the first threshold value and the second threshold value based on statistical information on the degree of abnormality. For example, the statistical information on the degree of abnormality may be the top n% of the degree of abnormality for each battery. For example, the control unit 22 may set the value in the top 0.01% of the degree of abnormality as the second threshold value, and the value in the top 0.1% of the degree of abnormality as the first threshold value.

[0082] For a battery 1 in a mature state, the control unit 22 determines the first and second thresholds taking into account the actual state of the battery 1. For example, if the number of abnormal items is greater than the actual number of abnormalities in the battery 1 at the currently set first and second thresholds, the control unit 22 raises the first and second thresholds so that the number of abnormal items equals the actual number of abnormalities in the battery 1. On the other hand, if the number of abnormal items is smaller than the actual number of abnormalities in the battery 1, the control unit 22 lowers the first and second thresholds so that the number of abnormal items equals the actual number of abnormalities in the battery 1. This process of setting the first and second thresholds based on the degree of abnormality is an example of a process in which "predetermined values ​​used to determine multiple determination conditions are set according to the type of battery 1, and are updated based on the operation information when the number of acquired pieces of operation information for the battery 1 is equal to or greater than a predetermined number."

[0083] When the control unit 22 receives the selection of one abnormal item from among one or more action-requiring items and one or more continued check items displayed on the graph screen 200, the control unit 22 assigns information indicating that the selection has been received (hereinafter referred to as a "read flag") to the one abnormal item. The selection of this one abnormal item is performed by positioning a pointer (not shown) on a block 207 that constitutes the graph screen 200 and clicking or tapping.

[0084] The control unit 22 displays the selected one abnormal item in a manner different from abnormal items to which no read flag has been assigned.

[0085] When one abnormality item is selected, if the selected abnormality item is a continuing check item, the control unit 22 displays a list screen 300 on the display unit 34 that displays a list of continuing check items corresponding to this continuing check item, as shown in Fig. 3. In the example of Fig. 3, continuing check items surrounded by a frame 204 are displayed as a list. On the other hand, when one abnormality item is selected, if the selected abnormality item is an item requiring action, the control unit 22 displays a list screen 400 on the display unit 34 that displays a list of action-requiring items corresponding to this action-requiring item, as shown in Fig. 4. In the example of Fig. 4, action-requiring items surrounded by a frame 205 are displayed as a list.

[0086] 3 and 4, the list screens 300 and 400 include a confirmation category field. The control unit 22 displays "read" in the confirmation category field for abnormal items that have been flagged as read, and displays "unread" in the confirmation category field for abnormal items that have not been flagged as read, thereby displaying abnormal items that have been flagged as read in different ways from abnormal items that have not been flagged as read.

[0087] The control unit 22 acquires the number of operating days of the battery 1 in which an abnormality determined to be an item requiring action or an item requiring continued check occurred, assigns information indicating the possibility of an early abnormality (hereinafter referred to as an "early abnormality flag") to abnormalities whose operating days are less than a predetermined number of days, and displays the abnormality in a different manner from abnormalities that do not have an early abnormality flag assigned. The memory 23 stores the operation start date of each of the multiple batteries 1. Therefore, the control unit 22 can acquire the difference in days between this operation start date and the date the abnormality occurred as the number of operating days.

[0088] As shown in Figures 3 and 4, the control unit 22 displays "Corresponding" in the initial abnormality field for abnormal items that have been assigned an initial abnormality flag, and displays "-" (hyphen) in the abnormality field for abnormal items that have not been assigned an initial abnormality flag, thereby displaying abnormal items that have been assigned an initial abnormality flag and abnormal items that have not been assigned an initial abnormality flag in different ways.

[0089] When the control unit 22 receives the selection of one abnormality item on the graph screen 200, it displays the abnormality item corresponding to the one abnormality item in a manner different from abnormality items that do not correspond to the one abnormality item. The selection of this one abnormality item is performed by positioning a pointer (not shown) on a block 207 on the graph screen 200, as shown in Fig. 3. The abnormality item corresponding to the one abnormality item is surrounded by a frame 204, and is displayed in a manner different from abnormality items that do not correspond to the one abnormality item.

[0090] Here, an abnormality item corresponding to one abnormality item is an item requiring action or an item requiring continued check during a predetermined period (time period) based on the date and time of occurrence of the one abnormality item. As shown in FIG. 3 , when block 207 is one abnormality item, the abnormality item corresponding to the one abnormality item corresponds to an item requiring action or an item requiring continued check included in frame 204. In detail, an abnormality item corresponding to one abnormality item corresponds to an abnormality item that occurred during the same time period as the one abnormality item and has the same abnormality classification as the one abnormality item. The abnormality classification refers to an item requiring action or an item requiring continued check. The time period may be, for example, one hour, two hours, 30 minutes, or the like, or may be one day or multiple days.

[0091] The abnormality item corresponding to the first abnormality item may be an action-requiring item or a continued check item for the same battery 1 as the battery 1 corresponding to the first abnormality item. In this case, if the first abnormality item is an action-requiring item, the control unit 22 displays, on the graph screen 200, a group of blocks indicating the action-requiring items for the battery 1 corresponding to the first abnormality item by surrounding them with a frame 204. On the other hand, if the first abnormality item is an ongoing action item, the control unit 22 displays, on the graph screen 200, a group of blocks indicating the continued check items for the battery 1 corresponding to the first abnormality item by surrounding them with a frame 205.

[0092] When the control unit 22 receives the selection of any one abnormality, it acquires the abnormalities for a predetermined period of time for the battery 1 in which the one abnormality occurred, and displays the acquired abnormality. This one abnormality is selected by positioning a pointer (not shown) on a cell of a battery ID in a certain row on the list screen 300 or list screen 400 and clicking or tapping, as shown in FIG. 5 . The predetermined period is a past period based on the date on which the one abnormality occurred or today, and is a predetermined period. The control unit 22 displays an abnormality list screen 600 on the display unit 34, which displays a list of the acquired abnormalities.

[0093] The control unit 22 acquires operation information consisting of one or more items for each of the multiple batteries 1 from the memory 23, and when the selection of any one of the one or more action-requiring items is accepted, the control unit 22 displays on the display unit 34 an operation information screen 500 including operation information for the battery 1 in which the selected action-requiring item occurred. At this time, the control unit 22 highlights the operation information for the status item related to the one action-requiring item. This one action-requiring item is selected by positioning a pointer (not shown) on a cell other than the battery ID in a certain row on the list screen 400 and clicking or tapping, as shown in FIG. 4 . The operation information screen 500 displays operation information for multiple status items.

[0094] Returning to Fig. 1 , the information terminal 3 is configured as, for example, a mobile information terminal such as a smartphone or tablet computer, or a stationary information terminal such as a desktop computer. The information terminal 3 is used by a user who manages multiple batteries 1. The information terminal 3 includes a communication unit 31, a control unit 32, a memory 33, and a display unit 34.

[0095] The communication unit 31 is configured by a communication device that connects the information terminal 3 to the network 4. The communication unit 31 receives display data for the graph screen 200, the list screen 300, the list screen 400, the operation information screen 500, and the abnormality list screen 600 transmitted by the server 2. The communication unit 31 transmits a selection instruction to the server 2.

[0096] The control unit 32 is configured with a processor such as a CPU, for example. The control unit 32 uses the display data received by the communication unit 31 to display the graph screen 200, the list screen 300, the list screen 400, the operation information screen 500, and the abnormality list screen 600 on the display unit 34.

[0097] The display unit 34 is configured with a display device such as a touch panel, etc. The display unit 34 accepts various selection instructions input by the user, such as a user selection instruction to select one abnormality item for one battery on the graph screen 200.

[0098] The memory 33 is configured by a storage device capable of storing various types of information, such as a RAM, an SSD, an HDD, or a flash memory.

[0099] Note that, although the battery management system in the present embodiment includes a plurality of batteries 1, a server 2, and an information terminal 3, the present disclosure is not particularly limited to this, and the battery management system may include a plurality of batteries 1 and an information terminal 3 without including a server 2. In this case, the information terminal 3 has the functions of the server 2.

[0100] FIG. 2 is a diagram illustrating a graph screen 200 according to the present embodiment. The graph screen 200 displays a bar graph showing the number of abnormalities occurring over a predetermined period of time in chronological order. In the graph screen 200, the vertical axis represents the number of abnormalities, and the horizontal axis represents time. The bar graph is configured by stacking a plurality of blocks 207. Each block 207 represents one abnormality and is associated with one battery 1 and the date and time of occurrence. The blocks 207 are stacked and displayed in the time period to which the date and time of occurrence belong. The blocks 207 are color-coded according to whether they are action-requiring items or continued check items. The bar graph includes a block group 201 consisting of blocks of continued check items and a block group 202 consisting of blocks of action-requiring items. In the example of FIG. 2 , the block group 202 of action-requiring items is displayed in green, and the block group 201 of continued check items is displayed in orange. However, this is merely an example, and any colors may be used for the action-requiring items and the continued check items as long as they are distinguishable from each other.

[0101] For example, suppose that during a certain time period on the horizontal axis, an abnormality requiring action occurs m1 times in n1 batteries. In this case, n1 x m1 green blocks 207 are piled up for this time period. Also, suppose that during this time period, an abnormality requiring further check occurs m2 times in n2 batteries. In this case, an additional n2 x m2 orange blocks 207 are piled up for this time period.

[0102] The legend display field 203 displays a legend for explaining the colors corresponding to the action-requiring items and the continued check items.

[0103] The bar graph can be selected in units of blocks 207. For example, the user operates a mouse (not shown) to move a pointer (not shown) on the screen and click on a position of interest on the bar graph. Alternatively, if the display unit 34 is a touch panel, the user touches a desired position on the bar graph. When a desired bar graph position is selected, one abnormality item of one battery corresponding to the block 207 displayed at that position is selected.

[0104] 3 is a diagram showing the screen transition from the graph screen 200 to the list screen 300. The following describes in detail the selection of a block 207. When a pointer (not shown) is placed on a certain block 207 on the graph screen 200, the control unit 22 superimposes on the graph screen 200 a frame 204 that surrounds a group of blocks in the same abnormality category as the block 207, among the abnormality items that occurred in the same time period as the abnormality item indicated by the block 207.

[0105] In this example, block 207 corresponds to a continuing check item. Therefore, the control unit 22 displays a frame 204 superimposed on the graph screen 200 so as to surround a group of blocks including blocks of continuing check items that occurred in the same time period as this continuing check item. The control unit 22 moves the frame 204 in conjunction with the movement of a pointer (not shown).

[0106] Then, when the control unit 22 receives an operation of clicking or touching the block 207, it assigns a read flag to the abnormal item corresponding to the block 207. Specifically, the control unit 22 stores the read flag in the memory 23 in association with the abnormal item.

[0107] Furthermore, when the control unit 22 receives an operation of clicking or touching inside the frame 204 , it switches the display screen of the display unit 34 from the graph screen 200 to the list screen 300 .

[0108] The list screen 300 displays a list of the continuing check items surrounded by the frame 204. The list screen 300 includes fields for date, battery ID, item type, check category, and initial abnormality.

[0109] The date field displays the date on which the continuation confirmation item occurred. The date field may display the date and time of occurrence instead of the date of occurrence. The battery ID field displays the battery ID of the battery 1 corresponding to the continuation confirmation item. The item type field displays the item type of the continuation confirmation item. Item types include battery deterioration rate, charging temperature, charging time, short circuit, etc. The confirmation category field displays whether the continuation confirmation item is unread or read. "Unread" indicates that the user has not confirmed the continuation confirmation item, and "read" indicates that the user has confirmed the continuation confirmation item. When a block 207 is selected on the graph screen 200, the control unit 22 assigns a read flag to the continuation confirmation item corresponding to that block 207. The control unit 22 displays "read" in the confirmation category field for continuation confirmation items to which a read flag has been assigned, and displays "unread" in the confirmation category field for continuation confirmation items to which a read flag has not been assigned.

[0110] The initial abnormality field indicates whether or not an initial abnormality flag has been assigned to the continuing confirmation item.

[0111] In the example of FIG. 3 , the first line of the list screen 300 displays that a continuation check item of the item type "battery deterioration rate" occurred on September 27th for battery 1 with battery ID "AA001." It also shows that this continuation check item has been assigned a read flag and an initial abnormality flag. When the control unit 22 displays the list screen 300, it assigns a read flag to all continuation check items included in the list screen 300. For example, the continuation check item in the first line of the list screen 300 is unread, but a read flag is assigned to the continuation check item in the current display. Therefore, the next time the list screen 300 including this continuation check item is displayed, the confirmation category of the continuation check item will be displayed as "read."

[0112] 4 is a diagram showing the screen transition from the graph screen 200 to the list screen 400. In this example, a pointer (not shown) is positioned on a block 207. This block 207 is an item requiring action. Therefore, a group of blocks consisting of items requiring action that occurred in the same time period as this block 207 is surrounded by a frame 205. When the control unit 22 receives an operation of clicking or tapping inside this frame 205, it switches the screen display from the graph screen 200 to the list screen 400.

[0113] The list screen 400 displays a list of action-requiring items surrounded by a frame 205. The list screen 400 includes fields for date, battery ID, item type, confirmation category, initial abnormality, and action status. The date, battery ID, item type, confirmation category, and initial abnormality are the same as those in the list screen 300, so detailed description will be omitted. The action status field indicates whether an action-requiring item is being addressed. The action status field displays "In Action" for an action-requiring item that is being addressed, and displays "Not Addressed" for an action-requiring item that has not yet been addressed. Note that the action status field may also display "Addressed" for an action-requiring item that has already been addressed. "Addressed" refers to the fact that a worker has performed work to correct the abnormality indicated by the action-requiring item. In the example of FIG. 4 , the first line of the list screen 400 displays that an action-requiring item of the item type "short circuit" occurred on September 29th for battery 1 with battery ID "BB001." Furthermore, this item requiring action has not been given a read flag or an initial abnormality flag, indicating that it has not yet been addressed.

[0114] An abnormality item that is being addressed is assigned an in-addressing flag, and an abnormality item that has already been addressed is assigned a addressed flag. The in-addressing flag and addressed flag are assigned based on user input. The control unit 22 displays "addressed" in the response status field for an abnormality item that has been assigned an in-addressing flag. The control unit 22 displays "addressed" in the response status field for an abnormality item that has been assigned a addressed flag. The control unit 22 displays "not addressed" in the response status field for an abnormality item that has not been assigned an in-addressing flag or addressed flag.

[0115] When the control unit 22 receives an operation of positioning a pointer (not shown) on a cell other than the battery ID in a certain row on the list screen 400 and clicking or tapping, the control unit 22 switches the screen display from the list screen 400 to the operation information screen 500 .

[0116] The operation information screen 500 displays operation information for the battery 1 selected on the list screen 400. The operation information screen 500 includes multiple operation information display fields 501. Each of the multiple operation information display fields 501 displays a graph showing the time progression of the operation information value of a status item. In this example, the operation information display fields 501 display graphs of the FET temperature, number of charges, pack temperature, and pack current. Furthermore, the operation information display fields 501 for the FET temperature and pack temperature are associated with the action-requiring item type "short circuit" selected on the list screen 400, and are therefore highlighted more than the operation information display fields 501 for the other status items. The highlighting can be achieved by surrounding the operation information display field 501 with a bold frame or by increasing its size, for example.

[0117] 5 is a diagram showing the screen transition from the list screens 300 and 400 to the abnormality list screen 600. When the control unit 22 receives an operation of positioning a pointer (not shown) on a cell of a battery ID in a certain row on the list screen 300 or the list screen 400 and clicking or tapping, the control unit 22 switches the screen display from the list screen 300 or the list screen 400 to the abnormality list screen 600.

[0118] The abnormality list screen 600 displays a list of abnormalities that have occurred in the past for a predetermined period of time in the same battery 1 as the battery 1 selected on the list screen 300 or the list screen 400. In the example of Fig. 5, the abnormality list screen 600 displays abnormalities in the battery 1 with the battery ID "BB001" selected on the list screen 400.

[0119] The abnormality list screen 600 includes fields for date, battery ID, abnormality category, item type, confirmation category, initial abnormality, and response status. The date, battery ID, item type, confirmation category, initial abnormality, and response status are the same as those in the list screen 300 or the list screen 400. The abnormality category field indicates whether the abnormality item in each row is an item requiring response or an item requiring continued confirmation. When the control unit 22 displays the abnormality list screen 600, it assigns a read flag to the abnormality item included in the displayed abnormality list screen 600. Therefore, when the control unit 22 next displays the list screens 300, 400 and the abnormality list screen 600 including the abnormality items shown in FIG. 6, it displays "read" in the confirmation category field of the abnormality item.

[0120] 6 is a flowchart showing the abnormality determination process in this embodiment. First, in step S1, the control unit 22 acquires battery log information from the memory 23. Here, the control unit 22 may acquire battery log information for which an abnormality classification has not been determined from the memory 23. For example, if the process in FIG. 6 is executed once a day, the battery log information for the most recent day is acquired.

[0121] Next, in step S2, the control unit 22 starts a loop process for each abnormality type, which are battery deterioration rate, charging temperature, charging time, and short circuit.

[0122] Next, in step S3, the control unit 22 calculates the abnormality level for each piece of battery log information to be processed. This process will be described in detail later.

[0123] Next, in step S4, the control unit 22 determines the abnormality category based on the abnormality level. This process will be described in detail later. Here, it is determined whether the abnormality category is an action-requiring item, an ongoing check item, or neither of the abnormality categories.

[0124] Next, in step S5, the control unit 22 assigns an initial abnormality flag to any abnormality item of the battery 1 whose number of operating days is less than a predetermined number of days.

[0125] Next, in step S6, the control unit 22 updates the abnormality database by storing the battery log information determined to be an abnormality in step S4 as an abnormality in the abnormality database. The abnormality items stored in the abnormality database are associated with an abnormality category, the date and time of occurrence, a battery ID, and the like.

[0126] Next, in step S7, the control unit 22 determines whether or not processing for all abnormality types has been completed. If processing for all abnormality types has not been completed, the process returns to step S2, and processing for the next abnormality type is executed. On the other hand, if processing for all abnormality types has been completed, the process ends.

[0127] FIG. 7 is a flowchart showing the determination process when the abnormality type is the battery deterioration rate.

[0128] First, in step S21, the control unit 22 acquires the current SOH value of each battery for each piece of battery log information to be processed. The control unit 22 may acquire the current SOH value from the battery log information.

[0129] Next, in step S22, the control unit 22 calculates the absolute value of the deterioration rate of each battery 1 as the degree of abnormality using the above-mentioned formula (1). Note that the previous SOH value shown in formula (1) refers to the SOH previously measured for the target battery 1. If the previous SOH value is stored in the memory 23, the control unit 22 can simply obtain the previous SOH value from the memory 23. Steps S21 and S22 are details of the processing of step S3.

[0130] Next, in step S23, the control unit 22 performs a threshold determination process. Specifically, if the abnormality level is less than the first threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is normal (step S26). On the other hand, if the abnormality level is equal to or greater than the first threshold and less than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring continued check (step S25). On the other hand, if the abnormality level is equal to or greater than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring action (step S24). Steps S23, S24, S25, and S26 are details of the process of step S4.

[0131] FIG. 8 is a flowchart showing the determination process when the abnormality type is the charging temperature.

[0132] First, in step S31, the control unit 22 acquires the charging temperature for each piece of battery log information to be processed. Here, the control unit 22 uses the charging temperature difference as the charging temperature and calculates the absolute value of the charging temperature difference as the abnormality level. Step S31 is a detailed description of the processing in step S3.

[0133] Next, in step S32, the control unit 22 performs a threshold determination process. Specifically, if the abnormality level is less than the first threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is normal (step S35). On the other hand, if the abnormality level is equal to or greater than the first threshold and less than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring continued check (step S34). On the other hand, if the abnormality level is equal to or greater than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring action (step S33). Steps S32, S33, S34, and S35 are details of the process of step S4.

[0134] FIG. 9 is a flowchart showing the determination process when the abnormality type is the charging time.

[0135] First, in step S41, the control unit 22 acquires the charging time for each piece of battery log information to be processed. Here, the control unit 22 uses the CV charging time as the charging time and calculates the absolute value of the CV charging time as the abnormality degree. Step S41 is a detailed description of the processing in step S3.

[0136] Next, in step S42, the control unit 22 performs a threshold determination process. Specifically, if the abnormality level is less than the first threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is normal (step S45). On the other hand, if the abnormality level is equal to or greater than the first threshold and less than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring continued check (step S44). On the other hand, if the abnormality level is equal to or greater than the second threshold, the control unit 22 determines that the battery log information corresponding to that abnormality level is an abnormal item and sets the abnormality category of that abnormality item as an item requiring action (step S43). Steps S42, S43, S44, and S45 are details of the process of step S4.

[0137] FIG. 10 is a flowchart showing the determination process when the type of abnormality is a short circuit.

[0138] Steps S51 and S52 are the same as steps S21 and S22.

[0139] In step S53, the control unit 22 performs a threshold determination process. Specifically, the control unit 22 determines whether the abnormality level is less than a first threshold or is equal to or greater than the first threshold.

[0140] Step S54 is the same as step S31.

[0141] In step S55, the control unit 22 performs a threshold determination process. Specifically, the control unit 22 determines whether the abnormality level is less than the first threshold or is equal to or greater than the first threshold.

[0142] Step S57 is the same as step S41.

[0143] In step S58, the control unit 22 performs a threshold determination process. Specifically, the control unit 22 determines whether the abnormality level is less than the first threshold or is equal to or greater than the first threshold.

[0144] In step S56, the control unit 22 determines whether all of the determination results in steps S53, S55, and S58 indicate that the abnormality level is equal to or greater than the first threshold. If all of the determination results indicate that the abnormality level is equal to or greater than the first threshold (step S56: "1"), the control unit 22 generates an abnormality item with a short circuit type based on the corresponding battery log information and sets the abnormality category of the abnormality item to an action-required item (step S59). On the other hand, if one or two of the determination results in steps S53, S55, and S58 indicate that the abnormality level is equal to or greater than the first threshold (step S56: "2"), the control unit 22 generates an abnormality item with a short circuit type based on the corresponding battery log information and sets the abnormality category of the abnormality item to an action-required item (step S60). On the other hand, if all of the determination results in steps S53, S55, and S58 indicate that the abnormality level is not equal to or greater than the first threshold (step S56: "3"), the control unit 22 determines that the corresponding battery log information is normal (step S61).

[0145] FIG. 11 is a flowchart showing the list screen display process in this embodiment.

[0146] First, in step S71, the control unit 22 receives a user instruction to display a list screen (YES in step S71). This list screen corresponds to any one of the list screen 300 shown in Fig. 3, the list screen 400 shown in Fig. 4, and the abnormality list screen 600 shown in Fig. 5. If no instruction to display the list screen is input (NO in step S71), the process ends.

[0147] Next, in step S72, the control unit 22 displays a list screen on the display unit 34.

[0148] Next, in step S73, the control unit 22 accepts an instruction to close the list screen (YES in step S73). If the instruction to close the list screen is not accepted (NO in step S73), the process waits in step S73 and the list screen continues to be displayed.

[0149] Next, in step S74, the control unit 22 closes the list screen.

[0150] Next, in step S75, the control unit 22 assigns a read flag to the abnormal item included in the closed list screen.

[0151] As described above, according to this embodiment, when there are one or more action-requiring items and one or more continued check items, both are displayed in different formats on the graph screen 200, thereby appropriately supporting the user in determining which abnormal items are action-requiring items and which abnormal items are continued check items. Furthermore, because one or more action-requiring items and one or more continued check items are displayed in different formats, the user does not need to display various images in order to determine which abnormal items are action-requiring items and which abnormal items are continued check items, thereby reducing the resources required for display.

[0152] The present disclosure can employ the following modifications.

[0153] The control unit 22 may display the abnormal items displayed on the list screens 300, 400 or the abnormality list screen 600 in different display modes depending on the degree of abnormality. For example, the control unit 22 may display the abnormal items such that the higher the degree of abnormality, the higher the position of the abnormal item.

[0154] The present disclosure can appropriately assist a user in determining whether a battery is abnormal, and is therefore useful in the technical field of supporting such analysis.

Claims

1. An information processing method in a computer, comprising: acquiring multiple abnormal items that have occurred in each of multiple batteries; determining whether each of the multiple abnormal items is an action-requiring item that requires a response, or an ongoing check item that requires continuous status monitoring; and, if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, displaying the one or more action-requiring items and the one or more ongoing check items in different formats.

2. An information processing method as described in claim 1, wherein, in the judgment, the abnormal item that satisfies at least one judgment condition out of a plurality of judgment conditions is judged to be the item for continued confirmation, and the abnormal item that satisfies a predetermined number or more of the plurality of judgment conditions is judged to be the item requiring action.

3. The information processing method according to claim 2, wherein the plurality of determination conditions include a determination condition that the rate of battery deterioration of the battery in which the abnormality has occurred is equal to or greater than a predetermined value.

4. The information processing method according to claim 2, wherein the plurality of determination conditions include a determination condition that the charging time of the battery in which the abnormality occurred is equal to or longer than a predetermined value.

5. The information processing method according to claim 2, wherein the plurality of determination conditions include a determination condition that the charging temperature of the battery in which the abnormality has occurred is equal to or higher than a predetermined value.

6. An information processing method according to any one of claims 3 to 5, wherein the predetermined value is set according to the type of battery, and is updated based on the operation information when the number of acquired pieces of operation information for the battery is equal to or exceeds a predetermined number.

7. An information processing method according to claim 1 or 2, further comprising: obtaining an abnormality level corresponding to each of the plurality of abnormality items, the abnormality level being a degree of severity of the abnormality indicated by the abnormality item; and determining, in the determination, whether each of the plurality of abnormality items is an item requiring action or an item requiring continued confirmation based on the abnormality level.

8. An information processing method as described in claim 7, wherein, in the determination, if the degree of abnormality is equal to or greater than a first threshold, the abnormal item corresponding to that degree of abnormality is determined to be the item requiring further confirmation, and if the degree of abnormality is equal to or greater than a second threshold higher than the first threshold, the abnormal item corresponding to that degree of abnormality is determined to be the item requiring attention.

9. The information processing method according to claim 8, wherein the first threshold value and the second threshold value are set according to the type of the battery, and are updated based on the operation information when the number of times operation information of the battery is obtained is equal to or exceeds a predetermined number.

10. An information processing method as claimed in claim 1 or 2, further comprising, when a selection of one abnormal item from among said one or more action-requiring items and said one or more continuing confirmation items is accepted, adding information to said one abnormal item indicating that said selection has been accepted, and displaying said one abnormal item in a manner different from said one or more action-requiring items and said one or more continuing items to which information indicating that selection has not been added is not added.

11. An information processing method according to claim 1 or 2, further comprising: acquiring the number of operating days of the battery in which an abnormal item determined to be an item requiring action or an item for continued check has occurred; assigning information indicating that the abnormal item whose operating days are less than a predetermined number of days may be an initial abnormality; and displaying the abnormal item in a manner different from abnormal items that are not assigned information indicating that the abnormal item may be an initial abnormality.

12. An information processing method according to claim 1 or 2, further comprising, when a selection of one abnormal item from among the one or more items requiring action and the one or more items for continued confirmation is accepted, displaying the abnormal item corresponding to the one abnormal item in a manner different from abnormal items that do not correspond to the one abnormal item.

13. An information processing method according to claim 12, wherein the abnormal item corresponding to said one abnormal item is said item requiring action or said item requiring continued confirmation during a predetermined period based on the date and time of occurrence of said one abnormal item.

14. The information processing method according to claim 12, wherein the abnormality item corresponding to said one abnormality item is the item requiring action or the item requiring continued check for the same battery as the battery corresponding to said one abnormality item.

15. An information processing method as claimed in claim 1 or 2, further comprising, when a selection of any one of the one or more items requiring action and the one or more items for continued check is accepted, obtaining abnormal items for a predetermined period in the battery in which the one abnormal item occurred, and further displaying the abnormal item.

16. An information processing method as claimed in claim 1 or 2, further comprising: acquiring operation information consisting of one or more items for each of the plurality of batteries; and, when a selection of any one of the one or more action items is accepted, displaying operation information for the battery in which the selected action item has occurred; and, in displaying the operation information, highlighting operation information for items related to the one action item.

17. An information processing device including a processor, wherein the processor acquires multiple abnormal items that have occurred in each of multiple batteries, determines whether each of the multiple abnormal items is an action-requiring item that requires action, or an ongoing check item that requires continuous status monitoring, and if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, displays the one or more action-requiring items and the one or more ongoing check items in different ways.

18. An information processing program that causes a computer to execute a process of acquiring multiple abnormal items that have occurred in each of multiple batteries, determining whether each of the multiple abnormal items is an action-requiring item that requires a response, or an ongoing check item that requires continuous status monitoring, and, if the multiple abnormal items include one or more action-requiring items and one or more ongoing check items, displaying the one or more action-requiring items and the one or more ongoing check items in mutually different modes.

Images