Secondary battery information output device

Abstract

To provide a secondary battery information output device which can easily estimate characteristics of a secondary battery.SOLUTION: A secondary battery information output device includes: a data acquisition element for acquiring charge-discharge data; a storage element for storing first correspondence data and second correspondence data; an information processing element for estimating the type of a secondary battery to process; and an output element for outputting the result of estimation by the information processing element. The information processing element executes first estimation processing of estimating the type of the secondary battery to process, and executes second estimation processing of estimating the type of the secondary battery to process in a case where the type of the secondary battery to process cannot be estimated uniquely in the first estimation processing.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an apparatus for outputting information about a secondary battery. [Background technology]

[0002] The deterioration state of the secondary battery is determined when performing maintenance on the secondary battery, when attempting to reuse a used secondary battery, etc. The deterioration state of the secondary battery can be estimated, for example, from the voltage value of the secondary battery (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7266907 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the relationship between the voltage value of a secondary battery and the deterioration state varies depending on the characteristics of the secondary battery. Although it is desirable to know, for example, the model of the secondary battery as information for identifying the characteristics of the secondary battery, there are cases where information on the model of the secondary battery cannot be obtained.

[0005] Even in such a case, there is a need to determine the deterioration of a secondary battery after identifying to some extent the characteristics of the secondary battery to be determined as a deterioration target, but the technology of Patent Document 1 does not meet this need. Therefore, there is a demand for a technology that can easily estimate the characteristics of a secondary battery.

[0006] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a secondary battery information output device that can easily estimate the characteristics of a secondary battery. [Means for solving the problem]

[0007] The secondary battery information output device of the present invention comprises: a data acquisition element for acquiring charge / discharge data of a secondary battery to be processed, the charge / discharge data being composed of data of a first voltage value before charging or discharging and data of a second voltage value after the start of charging or discharging; a storage element storing first correspondence data indicating a correspondence between the first voltage value of a secondary battery and a type of the secondary battery, and second correspondence data indicating a correspondence between a change in voltage value between the first voltage value and the second voltage value of the secondary battery and the type of the secondary battery; an information processing element that estimates a type of the secondary battery to be processed based on the charge / discharge data, the first correspondence data, and the second correspondence data; an output element that outputs an estimation result by the information processing element; Equipped with The information processing element includes: executing a first estimation process to estimate a type of the secondary battery to be processed based on the first voltage value data of the secondary battery to be processed and the first correspondence data; When the type of the secondary battery being processed cannot be uniquely estimated in the first estimation process, a second estimation process is further executed to estimate the type of the secondary battery being processed based on a change in voltage value between the first voltage value and the second voltage value and the second correspondence data. The present invention is characterized in that it is configured as follows.

[0008] The inventors have found that the characteristics of a secondary battery can be specified to some extent by specifying the type of the secondary battery (for example, the type of the secondary battery based on the difference between the positive electrode active material and the negative electrode active material). More specifically, the following is true.

[0009] (1) The type of secondary battery can sometimes be identified by the voltage value (so-called open circuit voltage) of the secondary battery before charging or discharging.

[0010] (2) Even if the type of secondary battery cannot be identified based on its voltage value before charging or discharging, i.e., for example, if the ranges of possible voltage values ​​before charging or discharging for multiple different types of secondary batteries overlap, it is possible to identify the type of secondary battery to some extent based on the way in which the voltage value before charging or discharging changes between the voltage value before charging or discharging and the voltage value after charging or discharging has started.

[0011] The present invention is based on this new finding, and the data acquisition element acquires charge / discharge data consisting of first voltage value data, which is the voltage value before charging or discharging of the secondary battery being processed, and second voltage value data, which is the voltage value after charging or discharging has started.

[0012] The information processing element then estimates the type of the secondary battery being processed based on first correspondence data indicating the correspondence between a first voltage value of a secondary battery and the type of the secondary battery, and the first voltage value of the secondary battery being processed.If the type of the secondary battery being processed cannot be uniquely estimated from the first voltage value, the information processing element further estimates the type of the secondary battery being processed based on second correspondence data indicating the correspondence between the change in voltage value between the first voltage value and the second voltage value and the type of the secondary battery, and the change in voltage value between the first voltage value and the second voltage value of the secondary battery being processed.

[0013] As a result, if the type of the secondary battery can be uniquely estimated from the first voltage value, the type of the secondary battery can be estimated with fewer processing steps.

[0014] Furthermore, when the type of the secondary battery cannot be uniquely estimated from the first voltage value alone, the type of the secondary battery is automatically estimated using the change in voltage value between the first voltage value and the second voltage value as well, thereby increasing the certainty that the type of the secondary battery can be estimated.

[0015] Furthermore, the information used to estimate the type of the secondary battery is only the voltage values ​​before and after the secondary battery is charged or discharged, so that the type of the secondary battery can be easily estimated.

[0016] In this way, according to the present invention, the type of secondary battery can be easily estimated as a characteristic of the secondary battery.

[0017] In the present invention, the storage element stores manufacturer data indicating a correspondence between a type of the secondary battery and a manufacturer of the secondary battery; the information processing element estimates a manufacturer of the secondary battery to be processed based on the estimated type of the secondary battery to be processed and the manufacturer data; The output element outputs information on the manufacturer of the secondary battery to be processed that is estimated by the information processing element. It is preferable.

[0018] Even if the type of secondary battery is the same, the characteristics of the secondary battery may differ depending on which manufacturer produced it. In order to further narrow down the characteristics of the secondary battery, it is preferable to obtain information on the manufacturer of the secondary battery.

[0019] According to the present invention, the information processing element estimates the manufacturer of the secondary battery to be processed based on the manufacturer data indicating the correspondence between the type of secondary battery and the manufacturer of the secondary battery and the estimated type of secondary battery, and the output element outputs the estimation result. According to the present invention, the manufacturer of the secondary battery can be further estimated as a characteristic of the secondary battery.

[0020] In the present invention, a reception element for receiving an operation by an operator of the secondary battery information output device, the output element, when the information processing element cannot uniquely estimate a manufacturer of the secondary battery being processed, outputs information on a plurality of manufacturers estimated by the information processing element; The information processing element includes: receiving an operation of selecting one of the manufacturers from the plurality of manufacturers by the operator via the reception element; The manufacturer that is received is assumed to be the manufacturer of the secondary battery that is the processing target. It is preferable.

[0021] According to the present invention, when the information processing element cannot uniquely estimate the manufacturer of the secondary battery being processed, the output element outputs information on multiple manufacturers estimated by the information processing element, and the information processing element receives an operation by an operator to select one manufacturer from the multiple manufacturers and estimates that the received manufacturer is the manufacturer of the secondary battery being processed.

[0022] This increases the certainty that the manufacturer of the secondary battery can be estimated through dialogue with the operator, even in cases where the manufacturer cannot be uniquely estimated based on the type of secondary battery alone.

[0023] In the present invention, the storage element stores on-board equipment data indicating a correspondence between a manufacturer of the secondary battery and an equipment in which the secondary battery is mounted; the information processing element estimates an equipment in which the secondary battery to be processed is mounted based on the estimated manufacturer of the secondary battery to be processed and the mounted equipment data; The output element outputs information on a device in which the secondary battery to be processed is mounted, the information processing element estimating this information. It is preferable.

[0024] Even if the type and manufacturer of the secondary battery are the same, the characteristics of the secondary battery may differ depending on the device in which it is installed, i.e., the device for which the secondary battery was manufactured. In order to further narrow down the characteristics of the secondary battery, it is preferable to also obtain information on the device in which the secondary battery is installed.

[0025] According to the present invention, the information processing element estimates the equipment in which the secondary battery to be processed is installed based on the installed equipment data indicating the correspondence between the manufacturer of the secondary battery and the equipment in which the secondary battery is installed and the estimated manufacturer of the secondary battery, and the output element outputs the estimation result. According to the present invention, the equipment in which the secondary battery is installed can be further estimated as a characteristic of the secondary battery.

[0026] In the present invention, a reception element for receiving an operation by an operator of the secondary battery information output device, the output element, when the information processing element cannot uniquely estimate a device in which the secondary battery to be processed is mounted, outputs information on the plurality of devices estimated by the information processing element; The information processing element includes: receiving an operation of selecting one of the devices from the plurality of devices by the operator via the reception element; The received device is assumed to be a device in which the secondary battery to be processed is mounted. It is preferable.

[0027] According to the present invention, when the information processing element cannot uniquely estimate the device in which the target secondary battery is installed, the output element outputs information on the multiple devices estimated by the information processing element. Then, the information processing element receives an operation by an operator to select one device from the multiple devices, and estimates that the received device is the device in which the target secondary battery is installed.

[0028] This increases the certainty that the equipment in which the secondary battery is to be installed can be estimated through dialogue with the operator, even in cases where the secondary battery manufacturer alone is unable to uniquely estimate the equipment in which the secondary battery is to be installed. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a block diagram showing an example of an overall image of a secondary battery information output device according to the present invention; [Diagram 2] FIG. 1 is a diagram showing an example of the contents of data used for processing by the present invention. [Diagram 3] FIG. 1 is a diagram showing an example of the contents of data used for processing by the present invention. [Figure 4] FIG. 1 is a diagram showing an example of the contents of data used for processing by the present invention. [Diagram 5] A flowchart showing an example of the processing contents of the present invention. [Figure 6] FIG. 1 is a diagram showing an example of the contents of data used for processing by the present invention. [Figure 7] A flowchart showing a modified example of the processing contents of the present invention. [Figure 8] A flowchart showing a modified example of the processing contents of the present invention. [Figure 9] A flowchart showing a modified example of the processing contents of the present invention. [Figure 10] FIG. 13 is a diagram showing an example of output contents of the present invention. [Figure 11] FIG. 1 is a diagram showing an example of the contents of data used for processing by the present invention. [Figure 12] FIG. 13 is a diagram showing an example of output contents of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] <Configuration of secondary battery information output device> First, the configuration of a secondary battery information output device according to the present embodiment will be described with reference to Fig. 1. Note that the same components are given the same reference numerals and descriptions thereof may be omitted.

[0031] The secondary battery information output device of this embodiment is a device that outputs information about a secondary battery.

[0032] The secondary battery information output device of this embodiment is, for example, a computer configured to include a data acquisition element 10, a storage element 30, and an information processing element 50. Alternatively, the secondary battery information output device may further include a reception element 70. The secondary battery information output device may be implemented in a general-purpose computer such as a personal computer, tablet, or smartphone, or may be implemented in a terminal dedicated to implementing the present invention.

[0033] The data acquisition element 10 is a mechanism for acquiring charge / discharge data consisting of data on a first voltage value, which is the voltage value before charging or discharging, and data on a second voltage value, which is the voltage value after charging or discharging has begun, of the secondary battery 110 being processed.

[0034] The data acquisition element 10 is, for example, a voltmeter that acquires the voltage value of the secondary battery 110 being processed, but various known means for acquiring the voltage value of a secondary battery may be used as the data acquisition element 10. When the data acquisition element 10 is a voltmeter, for example, the voltage value is acquired from the secondary battery 110 being processed via a cable 130 that has a terminal for acquiring the voltage value of the secondary battery 110. Note that, for simplicity of explanation, only one cable is shown in the figure, but any number of cables necessary to acquire the voltage value may be used.

[0035] Alternatively, for example, the data acquisition element 10 may acquire charge / discharge data of the secondary battery 110 being processed by reading, from a storage means not shown, charge / discharge data that has been acquired in advance from the secondary battery 110 being processed by a voltmeter or the like not shown and stored in the storage means not shown.

[0036] The storage element 30 is composed of a storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), or a HDD (Hard Disk Drive).

[0037] In addition to the first and second correspondence data, the storage element 30 stores the processing results of the secondary battery information output device of this embodiment and information used for the processing. The information used for the processing by the secondary battery information output device of this embodiment includes, for example, charge / discharge data, manufacturer data, and on-board device data.

[0038] The charge / discharge data is data consisting of a first voltage value data, which is the voltage value before charging or discharging, of the secondary battery 110 to be processed, and a second voltage value data, which is the voltage value after the start of charging or discharging.

[0039] Note that "before charging" does not only mean a state in which the discharge capacity of the secondary battery 110 being processed is 0 (i.e., a state in which the SOC (State Of Charge) is 0%), but may mean any state between a state in which the discharge capacity is 0 and a state in which the secondary battery 110 being processed is fully charged. In other words, the voltage value before charging or discharging is the voltage value in a state in which the secondary battery 110 being processed is neither charging nor discharging, regardless of the SOC state of the secondary battery 110 being processed.

[0040] That is, the first voltage value is a so-called open circuit voltage value of the secondary battery 110 to be processed, and the second voltage value is a voltage value acquired while the secondary battery 110 to be processed is discharging (or charging).

[0041] The first correspondence data is data showing the correspondence between the first voltage value of the secondary battery and the type of the secondary battery. Fig. 2 shows an example of the contents of the first correspondence data. As shown in Fig. 2, the first correspondence data stores each of a plurality of types of secondary batteries in association with the upper limit (OCV upper limit) and lower limit (OCV lower limit) of the first voltage value, i.e., information on the possible range of the first voltage value.

[0042] The type of secondary battery is, for example, a type of secondary battery characterized by the type of positive electrode active material and the type of negative electrode active material used in the battery.

[0043] The second correspondence data is data that indicates the correspondence between the change in voltage value between the first voltage value and the second voltage value of the secondary battery and the type of the secondary battery. The specific content of the second correspondence data will be described later.

[0044] The manufacturer data is data indicating the correspondence between the type of secondary battery and the manufacturer of the secondary battery. That is, for example, as shown in Fig. 3, the manufacturer data stores each type of secondary battery included in the first correspondence data in association with the name of the manufacturer, which is a business that manufactures and sells the secondary battery of that type.

[0045] The on-board equipment data is data that indicates the correspondence between the manufacturer of the secondary battery and the equipment in which the secondary battery is installed. For example, as shown in the upper diagram of Figure 4, the on-board equipment data stores the name of the manufacturer that manufactures and sells the secondary battery, which is included in the manufacturer data, in correspondence with the type of equipment in which the manufacturer's secondary battery can be installed.

[0046] Alternatively, for example, as shown in the lower diagram of Figure 4, the on-board equipment data stores a correspondence between each combination of the type of secondary battery contained in the charge / discharge data and the name of the manufacturer that manufactures, sells, etc. the secondary battery contained in the manufacturer data, and the type of equipment in which the secondary battery can be installed, which is identified by that combination.

[0047] The information processing element 50 is a so-called processor that is configured with an arithmetic processing device such as a CPU (Central Processing Unit), a memory, an I / O (Input / Output) device, and the like.

[0048] The information processing element 50 executes various processes performed by the secondary battery information output device by reading and executing a predetermined program.

[0049] The acceptance element 70 is, for example, a keyboard, a touch panel, a mouse, or another pointing device that accepts input from a user.

[0050] Output element 90 is, for example, a display that outputs information to a user.

[0051] The secondary battery 110 may be any of a variety of batteries compatible with on-board devices such as on-board batteries for electric vehicles, batteries for home storage batteries, electric transport equipment (carts, forklifts, etc.), personal computers, mobile phones, etc., and may be, for example, a lithium-ion battery, but may also be any other type of secondary battery.

[0052] <Processing Overview> Data acquisition process Next, the processing contents of the secondary battery information output device of this embodiment will be described First, a series of processing by the secondary battery information output device will be described with reference to FIG.

[0053] When processing starts, the data acquisition element 10 executes a data acquisition process to acquire charge / discharge data of the secondary battery 110 being processed, the charge / discharge data consisting of data of a first voltage value before charging or discharging and data of a second voltage value after charging or discharging has started (Figure 5 / S10).

[0054] The data acquisition element 10 in this embodiment is a voltmeter, and acquires a voltage value from the secondary battery 110 to be processed via a cable 130 equipped with a terminal for acquiring the voltage value of the secondary battery 110 .

[0055] In the data acquisition process, the data acquisition element 10, for example, acquires in chronological order voltage values ​​when the secondary battery 110 being processed is not discharging (or charging), and after the secondary battery 110 being processed starts discharging (or charging), acquires in chronological order voltage values ​​while the secondary battery 110 being processed is discharging (or charging). The data acquisition element 10 stores these data in the memory element 30 as charge / discharge data, for example.

[0056] FIG. 6 is a graph showing an example of the charge / discharge data acquired in this process. The horizontal axis is the time axis, and the vertical axis is the voltage value. In FIG. 6, the left side including time t1 shows data of the first voltage value, and the right side of time t1 shows data of the second voltage. In this way, the data of the first voltage value and the data of the second voltage value are continuous in time.

[0057] 6 shows the change in voltage value when the secondary battery 110 being processed starts discharging from a state in which it was not charging or discharging, so the voltage value drops to the right of time t1. Therefore, if the secondary battery 110 being processed starts charging from a state in which it was not charging or discharging, the voltage value will rise to the right of time t1.

[0058] First estimation process Next, a first estimation process (FIG. 5 / S30) is executed to estimate the type of the secondary battery 110 to be processed based on the first voltage value data of the secondary battery 110 to be processed and the first correspondence relationship data.

[0059] When the process starts, the information processing element 50 acquires the first voltage value data and the first correspondence relationship data included in the charge / discharge data of the secondary battery 110 to be processed, which is stored in the storage element 30, for example.

[0060] The information processing element 50 then refers to the first correspondence data to identify the type of secondary battery that matches the data of the first voltage value. That is, the information processing element 50 estimates the type of secondary battery that matches the data of the first voltage value based on whether or not the voltage value indicated by the first correspondence data is between the OCV upper limit and the OCV lower limit.

[0061] For example, the first voltage value of the secondary battery 110 to be processed shown in Figure 6 is 3.5 [V], so if the contents of the first correspondence data are as shown in Figure 2, the type of the secondary battery is estimated to be "LFP" or "LCO".

[0062] At this time, for example, if the first voltage value of the secondary battery 110 to be processed is 3.8 [V], the type of the secondary battery will be uniquely estimated to be "LCO."

[0063] Thereafter, it is determined whether the type of the secondary battery 110 being processed can be uniquely estimated in the first estimation process, and if the type of the secondary battery 110 being processed cannot be uniquely estimated in the first estimation process (FIG. 5 / S50: No), the second estimation process (FIG. 5 / S70) is executed. On the other hand, if the type of the secondary battery 110 being processed can be uniquely estimated in the first estimation process (FIG. 5 / S50: Yes), the second estimation process (FIG. 5 / S70) is not executed, and the output process (FIG. 5 / S130) is executed.

[0064] Second estimation process The second estimation process is a process that is further executed when the type of the secondary battery 110 being processed cannot be uniquely estimated in the first estimation process, and is a process that estimates the type of the secondary battery 110 being processed based on the change in voltage value between the first voltage value and the second voltage value and the second correspondence data.

[0065] When the second estimation process is started, the information processing element 50 acquires data on the second voltage value for a predetermined time period and second correspondence data contained in the charge / discharge data of the secondary battery 110 to be processed, which data is stored, for example, in the memory element 30.

[0066] Then, the information processing element 50 uses the second correspondence data to identify the type of secondary battery that matches the change in voltage value between the first voltage value and the second voltage value. The first voltage value used at this time is the first voltage value acquired in the first estimation process.

[0067] The second correspondence data is various data indicating the correspondence between the change in voltage value between the first voltage value and the second voltage value of the secondary battery and the type of the secondary battery, and various forms of data such as a correspondence table, a formula, a function, or a judgment model may be used.

[0068] In the following, an example will be described in which the second correspondence data is a learned model that uses reference data indicating the first voltage value and the second voltage value for a predetermined time period obtained from a plurality of sample secondary batteries corresponding to each type of secondary battery recorded in the first correspondence data, and data on the type of the sample secondary batteries as learning data, and machine-learns the correspondence between the change in voltage value between the first and second voltage values ​​of a secondary battery and the type of the secondary battery, and is a judgment model that uses the first voltage value and the second voltage value for a predetermined time period obtained from the secondary battery 110 to be processed as input, and outputs a judgment result of the type of the secondary battery 110 to be processed.

[0069] In this case, the information processing element 50 inputs the first voltage value and the second voltage value for a predetermined time acquired from the secondary battery 110 to be processed to the above-mentioned learned judgment model, which is the second correspondence relationship data. Then, the information processing element 50 estimates that the type of the secondary battery output by the judgment model is the type of the secondary battery 110 to be processed.

[0070] Output processing Thereafter, the information processing element 50 executes an output process for outputting the above-mentioned estimation result (FIG. 5 / S130), and ends the series of processes. The information processing element 50 outputs the estimation result of the first estimation process when the second estimation process has not been executed, and outputs the estimation result of the second estimation process when the second estimation process has been executed, to a display that is, for example, the output element 90. By looking at the output information, the operator can know the estimation result of the type of the secondary battery 110 being processed.

[0071] Although an example of an embodiment of the present invention has been described above, the present invention is not limited to this. Various modifications may be made without departing from the spirit of the present invention. Below, an example of a modified embodiment of the present invention will be described.

[0072] <Modified embodiment> In the following, a modified embodiment in which a manufacturer estimation process and an on-board equipment estimation process are performed after the first estimation process and the second estimation process are performed will be described. Note that the processes of S10 to S70 in Fig. 7 are the same as those described above with reference to Fig. 5, and therefore will not be described.

[0073] Manufacturer estimation process The manufacturer estimation process (FIG. 7 / S90) is a process of estimating the manufacturer of the secondary battery 110 being processed based on the type and manufacturer data of the secondary battery 110 being processed estimated by the information processing element 50 in the first estimation process or the second estimation process.

[0074] When the processing starts, the information processing element 50 estimates the manufacturer of the secondary battery 110 being processed by referring to the manufacturer data stored in the memory element 30 based on the type of the secondary battery 110 being processed estimated in the first estimation process or the second estimation process (FIG. 8 / S91).

[0075] That is, for example, if the manufacturer data is a correspondence table such as that shown in FIG. 3, and the type of the secondary battery 110 to be processed is estimated to be LFP, it is estimated that "Company A," "Company B," or "Company C," which are stored in correspondence with LFP, are likely to be the manufacturers of the secondary battery 110 to be processed.

[0076] At this time, if Company A is the only manufacturer stored in association with the LFP, then "Company A" will be uniquely presumed to be the manufacturer of the secondary battery 110 being processed.

[0077] Thereafter, it is determined whether the manufacturer of the secondary battery 110 being processed has been uniquely estimated, and if the manufacturer of the secondary battery 110 being processed has not been uniquely estimated (FIG. 8 / S93: No), the processes of S95 to S99 are executed. On the other hand, if the manufacturer of the secondary battery 110 being processed has been uniquely estimated (FIG. 8 / S93: Yes), the processes of S95 to S99 are not executed, and the manufacturer estimation process ends.

[0078] If the manufacturer of the secondary battery 110 being processed cannot be uniquely estimated (FIG. 8 / S93: No), the information processing element 50 first outputs to the display, which is the output element 90, a message urging the operator to select one manufacturer from among the multiple manufacturers, along with information about the multiple manufacturers estimated in S91 to be possible manufacturers of the secondary battery 110 being processed (FIG. 8 / S95).

[0079] The information processing element 50 then accepts an operation by the operator to select one manufacturer from the multiple manufacturers via the touch panel which is the reception element 70 (FIG. 8 / S97), estimates that the accepted manufacturer is the manufacturer of the secondary battery to be processed (FIG. 8 / S99), and terminates the manufacturer estimation process.

[0080] - Onboard equipment estimation processing The on-board equipment estimation process (FIG. 7 / S110) is a process for estimating the equipment mounted on the secondary battery 110 to be processed, based on the manufacturer of the secondary battery 110 to be processed estimated by the information processing element 50 in the manufacturer estimation process and the on-board equipment data. Note that this process may be omitted.

[0081] When the processing starts, the information processing element 50 estimates the equipment installed in the secondary battery 110 being processed by referring to the installed equipment data stored in the memory element 30 based on the manufacturer of the secondary battery 110 being processed estimated in the manufacturer estimation process (Figure 9 / S111).

[0082] That is, for example, if the on-board equipment data is a correspondence table as shown in the upper diagram of Figure 4, and the manufacturer of the estimated secondary battery 110 to be processed is Company B, it is estimated that the "wind power generation storage battery" and "electric vehicle" stored in correspondence with Company B are likely to be the equipment in which the secondary battery 110 to be processed is installed.

[0083] At this time, if the only on-board device stored in association with company B is an electric vehicle, then the "electric vehicle" will be uniquely estimated as the on-board device of the secondary battery 110 to be processed.

[0084] Or, for example, if the on-board equipment data is a correspondence table as shown in the lower diagram of Figure 4, and the type of the secondary battery 110 to be processed estimated in the first estimation process or the second estimation process is LFP, and the manufacturer of the secondary battery 110 to be processed estimated in the manufacturer estimation process is Company B, then an "electric vehicle" will be uniquely estimated as the equipment to be installed in the secondary battery 110 to be processed.

[0085] Thereafter, it is determined whether the device in which the secondary battery 110 to be processed is mounted can be uniquely estimated, and if the device in which the secondary battery 110 to be processed is mounted cannot be uniquely estimated (FIG. 9 / S113: No), the processes of S115 to S119 are executed. On the other hand, if the device in which the secondary battery 110 to be processed is mounted can be uniquely estimated (FIG. 9 / S113: Yes), the processes of S115 to S119 are not executed, and the mounted device estimation process ends.

[0086] If the device in which the secondary battery 110 to be processed is installed cannot be uniquely estimated (FIG. 9 / S113: No), the information processing element 50 first outputs to the display, which is the output element 90, a display prompting the operator to select one device from among the multiple devices, along with information about the multiple devices estimated in S111 to be possible devices in which the secondary battery 110 to be processed is installed (FIG. 9 / S115).

[0087] Then, the information processing element 50 accepts an operation by the operator to select one device from the multiple devices via the touch panel which is the reception element 70 (FIG. 9 / S117), estimates that the accepted device is the device in which the secondary battery to be processed is installed (FIG. 9 / S119), and terminates the manufacturer estimation process.

[0088] Output processing 10, the output element 90 outputs display 901 of information on the type of the secondary battery 110 being processed, display 903 of information on the manufacturer, and display 905 of information on the installed equipment, which are estimated by the information processing element 50 in the above process (FIG. 7 / S130), and ends the series of processes. Note that if the installed equipment estimation process is omitted, display 905 of information on the installed equipment is not output.

[0089] <Other modified embodiments> Although the modified embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various further modifications may be made without departing from the spirit of the present invention.

[0090] For example, in the above, an embodiment has been described in which a learned judgment model obtained by machine learning learning data is used as the second correspondence data, but the present invention is not limited to this. That is, for example, the second correspondence data may be a judgment model that compares reference data indicating time-series changes in a first voltage value and a second voltage value at a predetermined time corresponding to each type of secondary battery recorded in the first correspondence data with a first voltage value and a second voltage value for a predetermined time acquired from the secondary battery 110 to be processed, and judges the type of the secondary battery 110 to be processed based on the degree of approximation. In this case, the reference data is also stored in the storage element 30 in advance.

[0091] In this case, the second estimation process may be carried out as follows. That is, when the first voltage value of the secondary battery 110 to be processed is 3.5 [V], the information processing element 50 acquires reference data for the battery type having a first voltage value of 3.5 [V] or in the vicinity thereof from the reference data. In this embodiment, it is assumed that reference data having a first voltage value of 3.5 [V] is acquired for the LFP and the LCO.

[0092] 11 is a graph showing the thus obtained reference data of LFP and LCO, and the first and second voltage values ​​of the secondary battery 110 being processed. The dashed line indicates the change in voltage value between the first and second voltage values ​​of the LFP, the dotted line indicates the change in voltage value of the LCO, and the solid line indicates the change in voltage value of the secondary battery 110 being processed.

[0093] That is, for example, in this embodiment, for LFP, the second voltage value drops slightly from the first voltage value once and then continues to drop gently. On the other hand, for LCO, the second voltage value drops from the first voltage value more than the drop in LFP, and thereafter continues to drop in a steeper curve than LFP. The change in voltage value between the first and second voltage values ​​of the secondary battery 110 to be processed is similar to the change in LFP.

[0094] The determination model, which is the second correspondence data, receives as input the LFP and LCO reference data acquired above and the first and second voltage values ​​of the secondary battery 110 being processed, and determines the degree of approximation between the first and second voltage values ​​of the secondary battery 110 being processed and the LFP and LCO reference data using a predetermined algorithm, and outputs the type of secondary battery corresponding to the reference data with the determined high degree of approximation. The information processing element 50 then estimates that the type of secondary battery output by the determination model in this manner is the type of the secondary battery 110 being processed.

[0095] That is, in this embodiment, the information processing element 50 estimates that the type of the secondary battery 110 being processed is LFP.

[0096] Fig. 12 shows an example of the output contents of the estimation result. The output contents include a display 901 of information on the type of secondary battery 110 to be processed, which was estimated by the information processing element 50 in the above-mentioned process. Alternatively, for example, as shown in Fig. 12, a graph 907 showing the contents of the reference data corresponding to each type of secondary battery compared in the estimation process and the first voltage value and the second voltage value of the secondary battery 110 to be processed may be further displayed. This can increase the operator's sense of satisfaction with the estimation result. [Explanation of symbols]

[0097] 10...data acquisition element, 30...memory element, 50...information processing element, 70...reception element, 90...output element, 110...secondary battery.

Claims

1. a data acquisition element for acquiring charge / discharge data of a secondary battery to be processed, the charge / discharge data being composed of data of a first voltage value before charging or discharging and data of a second voltage value after the start of charging or discharging; a storage element storing first correspondence data indicating a correspondence between the first voltage value of a secondary battery and a type of the secondary battery, and second correspondence data indicating a correspondence between a change in voltage value between the first voltage value and the second voltage value of the secondary battery and the type of the secondary battery; an information processing element that estimates a type of the secondary battery to be processed based on the charge / discharge data, the first correspondence data, and the second correspondence data; an output element that outputs an estimation result by the information processing element; Equipped with The information processing element includes: executing a first estimation process to estimate a type of the secondary battery to be processed based on the first voltage value data of the secondary battery to be processed and the first correspondence data; When the type of the secondary battery to be processed cannot be uniquely estimated in the first estimation process, a second estimation process is further performed to estimate the type of the secondary battery to be processed based on a change in voltage value between the first voltage value and the second voltage value and the second correspondence data. A secondary battery information output device characterized by being configured as follows.

2. 2. The secondary battery information output device according to claim 1, the storage element stores manufacturer data indicating a correspondence between a type of the secondary battery and a manufacturer of the secondary battery; the information processing element estimates a manufacturer of the secondary battery to be processed based on the estimated type of the secondary battery to be processed and the manufacturer data; The output element outputs information on the manufacturer of the secondary battery to be processed that is estimated by the information processing element. A secondary battery information output device comprising:

3. 3. The secondary battery information output device according to claim 2, a reception element for receiving an operation by an operator of the secondary battery information output device, the output element, when the information processing element cannot uniquely estimate a manufacturer of the secondary battery being processed, outputs information on a plurality of manufacturers estimated by the information processing element; The information processing element includes: receiving an operation of selecting one of the manufacturers from the plurality of manufacturers by the operator via the reception element; The manufacturer that is received is assumed to be the manufacturer of the secondary battery that is the processing target. A secondary battery information output device comprising:

4. 3. The secondary battery information output device according to claim 2, the storage element stores on-board equipment data indicating a correspondence between a manufacturer of the secondary battery and an equipment in which the secondary battery is mounted; the information processing element estimates an equipment in which the secondary battery to be processed is mounted based on the estimated manufacturer of the secondary battery to be processed and the mounted equipment data; The output element outputs information on a device in which the secondary battery to be processed is mounted, the information processing element estimating this information. A secondary battery information output device comprising:

5. 5. The secondary battery information output device according to claim 4, a reception element for receiving an operation by an operator of the secondary battery information output device, the output element, when the information processing element cannot uniquely estimate a device in which the secondary battery to be processed is mounted, outputs information on the plurality of devices estimated by the information processing element; The information processing element includes: receiving an operation of selecting one of the devices from the plurality of devices by the operator via the reception element; The received device is assumed to be a device in which the secondary battery to be processed is mounted. A secondary battery information output device comprising:

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