JP6504544B2 - Control method of display device and display system - Google Patents

Description

  The present disclosure relates to a control method of a display device and a display system.

  Conventionally, a power supply system in which a plurality of storage batteries are used is known. For example, Patent Document 1 discloses a power supply system in which a plurality of battery modules are exchangeably connected.

JP, 2014-011060, A

  In the power supply system as described above, the plurality of battery modules are arranged at different positions. That is, one battery module is disposed at a position different from the other battery modules in conditions such as temperature. For this reason, it is a problem that the lifetime of a plurality of battery modules varies.

  Thus, the present disclosure provides a control method of a display device capable of suppressing variation in the life of a plurality of storage batteries in a storage system including a plurality of storage batteries.

  A control method of a display device according to an aspect of the present disclosure is a control method of a display device including a display, which is a plurality of storage batteries detachably connected to a storage system, and the plurality of storage batteries having different degrees of deterioration. Step (a) of displaying on the display an image showing the date of replacement of the connection position of the plurality of storage batteries by switching the connection positions of the plurality of storage batteries at a timing equivalent to the degree of deterioration of the plurality of storage batteries Assuming that a period from the start of use of the plurality of storage batteries to that timing to the timing is a first period, the date of replacement is set to a timing before half of the first period has elapsed.

  Note that these general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer readable CD-ROM, a system, a method, an integrated circuit, a computer program And any combination of recording media.

  A control method of a display device according to an aspect of the present disclosure can suppress variation in life of a plurality of storage batteries in a storage system including a plurality of storage batteries.

FIG. 1 is a schematic view showing a configuration of a power storage system according to the embodiment. FIG. 2 is a schematic external view of the storage system in a state where the door is closed. FIG. 3 is a diagram showing the arrangement of a plurality of storage battery modules. FIG. 4 is a block diagram showing a functional configuration of the power storage system according to the embodiment. FIG. 5 is a schematic external view of the storage battery module according to the embodiment. FIG. 6 is a block diagram showing a functional configuration of the storage battery module according to the embodiment. FIG. 7 is a diagram for explaining an effect obtained by switching connection positions of a plurality of storage battery modules. FIG. 8 is a diagram showing an example of switching connection positions. FIG. 9 is a diagram illustrating another example of switching connection positions. FIG. 10 is a flowchart of the operation of the storage system according to the embodiment. FIG. 11 is a view showing a first example of an image showing a date of replacement. FIG. 12 is a diagram showing a second example of an image showing a date of replacement. FIG. 13 is a diagram showing an example of an image indicating that the switching of connection positions is completed. FIG. 14 is a diagram showing a first example of an image including an arrangement of a plurality of storage battery modules and information indicating the degree of deterioration of each of the plurality of storage battery modules. FIG. 15 is a diagram showing a second example of an image including the arrangement of a plurality of storage battery modules and information indicating the degree of deterioration of each of the plurality of storage battery modules.

  A control method of a display device according to an aspect of the present disclosure is a control method of a display device including a display, which is a plurality of storage batteries detachably connected to a storage system, and the plurality of storage batteries having different degrees of deterioration. Step (a) of displaying on the display an image showing the date of replacement of the connection position of the plurality of storage batteries by switching the connection positions of the plurality of storage batteries at a timing equivalent to the degree of deterioration of the plurality of storage batteries Assuming that a period from the start of use of the plurality of storage batteries to that timing to the timing is a first period, the date of replacement is set to a timing before half of the first period has elapsed.

  Further, in the control method of the display device, after the connection positions of the plurality of storage batteries are switched at a timing before half of the first period elapses, an image indicating a next replacement due date is displayed on the display A step (b) may be provided, and the next replacement due date may be set to a timing before the deterioration degree of the plurality of storage batteries whose connection positions are replaced become equal.

  Further, in the control method of the display device, after the connection positions of the plurality of storage batteries are switched at a timing before half of the first period elapses, an image indicating a next replacement due date is displayed on the display And a step (b), wherein the next replacement due date is a period of a second period from the timing when the deterioration degree of the plurality of storage batteries whose connection positions are replaced becomes equal to the end timing of the first period. It may be set to the timing before half passes.

  The control method of the display device further includes a step (c) of receiving information indicating that the replacement of the connection positions of the plurality of storage batteries is completed, and the step (b) is performed after the step (c). It may be performed.

  Moreover, the date of the said replacement may be set to an earlier timing, so that the difference of the deterioration degree between these storage batteries is large.

  Further, the control method of the display device may further include a step (d) of displaying an arrangement of the plurality of storage batteries in the storage system and information indicating a degree of deterioration of each of the plurality of storage batteries.

  A display system according to an aspect of the present disclosure is a plurality of storage batteries that are detachably connected to a storage system, and a storage that holds a date for replacing connection positions of the plurality of storage batteries having different degrees of deterioration; A display, and a controller that causes the display to display an image indicating the date of replacement held in the storage unit on the display, and the degree of deterioration of the plurality of storage batteries indicating the life due to the replacement of connection positions of the plurality of storage batteries Assuming that the period from the start of use of the plurality of storage batteries to the corresponding timing when reaching the same timing as the first period, the date of replacement is set to the timing before half of the first period has elapsed. Be done.

  Note that these general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer readable CD-ROM, a system, a method, an integrated circuit, a computer program Or it may be realized by any combination of recording media.

  Hereinafter, a control method and a display system of a display device according to an aspect of the present disclosure will be specifically described with reference to the drawings.

  The embodiments described below each show one specific example of the present disclosure. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present disclosure. Further, among the components in the following embodiments, components not described in the independent claim indicating the highest concept are described as arbitrary components.

  Each figure is a schematic view, and is not necessarily illustrated strictly. Further, in the drawings, substantially the same configurations will be denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

Embodiment
[overall structure]
First, an overview of a display system according to an embodiment of the present disclosure will be described using FIG. 1. FIG. 1 is a schematic view showing a configuration of a display system according to the embodiment.

  As shown in FIG. 1, the display system 100 includes a storage system 10 including a plurality of storage battery modules 20, a communication device 30, a server device 40, and a portable terminal 50.

  The storage system 10 is a stationary power supply device in which a plurality of storage battery modules 20 are accommodated in a space inside an exterior body 11 formed of an exterior body main body 12 and a door 13. Specifically, the storage system 10 functions as a power supply device using a plurality of storage battery modules 20 accommodated.

  The storage system 10 supplies power to a load (not shown) by, for example, discharging the plurality of storage battery modules 20. In addition, the storage system 10 charges the plurality of storage battery modules 20 by the power supplied from the power system 60. The number of storage battery modules 20 included in the storage system 10 is not particularly limited. The storage system 10 may include at least two storage battery modules 20.

  Furthermore, the storage system 10 can also transmit the information acquired from the plurality of storage battery modules 20 to the communication device 30. Here, the information acquired from the storage battery module 20 is, for example, the temperature and the degree of deterioration of the storage battery module 20.

  Incidentally, in the storage system 10 shown in FIG. 1, the storage system 10 with the door 13 opened is illustrated in order to illustrate the storage battery module 20 housed inside the storage system 10. Is usually used with the door 13 closed. FIG. 2 is a schematic external view of power storage system 10 with door 13 closed.

  The communication device 30 is connected to the server device 40 via the Internet 70. More specifically, the communication device 30 connects to the Internet 70 by wired communication and communicates with the server device 40. The communication device 30 may be connected to the Internet 70 by wireless communication and may communicate with the server device 40. Communication device 30 is a gateway for power storage system 10 to communicate with server device 40 via Internet 70.

  Server device 40 receives information from power storage system 10, and manages the received information. The server device 40 is realized by, for example, a processor, a memory storing a program, a storage device such as a hard disk drive storing data, and the display 41.

  The server device 40 may be configured not only of one device but also of a plurality of devices. Also, the server device 40 may be at least a part of a device that implements cloud computing that provides software, data, and the like through a network such as the Internet 70.

  The portable terminal 50 is, for example, an information communication terminal such as a smartphone and a tablet terminal. The portable terminal 50 includes a display 51, can acquire information of the storage battery module 20 managed by the server device 40 from the server device 40, and can display the acquired information on the display 51.

  The storage system 10 included in the display system 100 as described above includes a plurality of storage battery modules 20 inside the exterior body 11. Here, in the following description, the arrangement of the plurality of storage battery modules 20 is defined as shown in FIG. FIG. 3 is a view showing the arrangement of the plurality of storage battery modules 20. As shown in FIG.

  As shown in FIG. 3, the plurality of storage battery modules 20 are arranged in a matrix when the user opens the door 13 and visually recognizes them.

  Here, the numbers 1 to 4 are assigned in order from the top to the rows in the matrix, and the letters A to C are assigned to the columns in the matrix. And, for example, the top storage location shown in FIG. 3 is described as storage location A1, since it is a storage location where the column is A and the row is 1. Moreover, the storage battery module 20 initially stored in the storage location A1 is also described as the storage battery module A1.

  Here, in the storage system 10, the degree of deterioration of the plurality of storage battery modules 20 is different due to the difference in storage location. For example, since the power supply 14 includes a discharge circuit and a charging circuit including a large number of heat generating components as described later, the temperature of the storage location near the power supply 14 is high. In addition, when the storage system 10 is installed near a heating device, heating causes a temperature difference in a plurality of storage locations.

  In general, the storage battery module 20 tends to deteriorate faster as it is used in a high temperature location. Therefore, if charging and discharging of the plurality of storage battery modules 20 are repeated in a state where there is a temperature difference in the plurality of storage locations, deterioration of the storage battery modules 20 stored in the storage location having high temperature becomes faster. For this reason, a difference will appear in the degree of deterioration of the plurality of storage battery modules 20 over time.

  On the other hand, the first controller 18 of the storage system 10 causes the first display 16 to display an image prompting a change of the storage location at an appropriate timing. Thereby, if the storage place of the several storage battery module 20 is replaced, the dispersion | variation in the degradation degree of the several storage battery module 20 can be suppressed.

  Here, the degree of deterioration is supplemented. In the storage battery module 20, generally, when charge and discharge are repeated, the full charge capacity decreases. This full charge capacity is the degree of deterioration. The degree of deterioration is also generally referred to as SOH (State Of Health), and is expressed as a percentage of the current full charge capacity to the unused full charge capacity. The SOH has a strong correlation with the internal resistance value of the storage battery module 20. For this reason, in the processing described in the following embodiment, the internal resistance value of the storage battery module 20 is used as the degree of deterioration, but SOH may be used, and the internal resistance value is SOH during processing. It may be converted. The higher the internal resistance value, the lower the SOH, and the higher the internal resistance value indicates that the storage battery module 20 is degraded.

[Storage system]
Next, the detailed configuration of power storage system 10 will be described. FIG. 4 is a block diagram showing a functional configuration of power storage system 10.

  As shown in FIG. 4, the storage system 10 includes a power supply 14, a plurality of first terminal units 15, a first display 16, a communication unit 17, a first controller 18, and a first storage 19. And

  The power supply 14 converts the power discharged by the plurality of storage battery modules 20 electrically and mechanically connected to the plurality of first terminal portions 15 into power corresponding to the load, and supplies the converted power to the load. Includes a discharge circuit. Specifically, the power supply unit 14 converts, for example, DC power discharged by the plurality of storage battery modules 20 into appropriate DC power corresponding to the load or AC power corresponding to the load.

  In addition, the power supply 14 includes a charging circuit that charges the plurality of storage battery modules 20 connected to the plurality of first terminal units 15 using power supplied from an external power supply such as the power system 60. Specifically, power supply 14 converts AC power supplied from power system 60 into DC power suitable for charging storage battery module 20.

  The power supply 14 as described above is realized by, for example, an AC / DC converter, a DC / AC inverter, a DC / DC converter, and the like.

  The first terminal unit 15 is an interface that is detachably connected to the storage battery module 20 and is used to transmit and receive power with the storage battery module 20 and to communicate information. Although not illustrated in FIG. 3, the first terminal unit 15 includes a first power terminal 15 a which is a terminal for transmitting and receiving power, and a first communication terminal 15 b which is a terminal for communication.

  Further, the plurality of first terminal portions 15 are electrically connected by a cable such as a lead wire. As shown in FIG. 4, the plurality of first terminal portions 15 serially connect the plurality of storage battery modules 20 arranged in the same row, and connect the plurality of storage battery modules 20 connected in series in parallel. Specifically, storage battery modules A1 to A4 are connected in series, storage battery modules B1 to B4 are connected in series, and storage battery modules C1 to C4 are connected in series. And storage battery modules A1 to A4 connected in series, storage battery modules B1 to B4 connected in series, and storage battery modules C1 to C4 connected in series are connected in parallel.

  The first display 16 is an example of a display, and displays an image displaying the date of replacement of the plurality of storage battery modules 20 held in the first storage 19 based on the control of the first controller 18. Specifically, the first display 16 is composed of a display panel such as a liquid crystal panel or an organic EL panel, and peripheral circuits for displaying an image on the display panel.

  In the embodiment, a touch panel is superimposed on the display panel of the first display 16, and the first display 16 also functions as a user interface for receiving user's input.

  The communication device 17 transmits information on the storage battery module 20 acquired by the first controller 18 via the first terminal unit 15 to the communication device 30 based on the control of the first controller 18. Also, the communication device 17 receives information from the communication device 30. The communication device 17 is specifically a communication circuit. The communication performed between the communication unit 17 and the communication device 30 may be wireless communication or wired communication. When wireless communication is performed between the communication device 17 and the communication device 30, as a communication standard of the wireless communication, for example, Wi-Fi (registered trademark), Bluetooth (registered trademark), ZigBee (registered trademark), etc. Although illustrated, it is not particularly limited. When wired communication is performed between the communication device 17 and the communication device 30, communication using a wired LAN (Local Area Network) or the like is exemplified.

  The first controller 18 performs various controls in the storage system 10. For example, the first controller 18 controls the power supply 14 to charge and discharge the plurality of storage battery modules 20. The first controller 18 also causes the communicator 17 to transmit information.

  In addition, the first controller 18 determines the date of replacement of the connection positions of the plurality of storage battery modules 20, and causes the first memory 19 to hold the determined date of replacement. That is, the first controller 18 stores the date of replacement of the connection position in the first memory 19. Then, the first controller 18 generates an image indicating the date of replacement held in the first memory 19 and causes the first display 16 to display the image.

  Specifically, the first controller 18 is realized by a processor, a microcomputer, a dedicated circuit, or the like, as long as it has a control function. The first controller 18 may include, for example, an arithmetic processing unit (not shown) and a storage unit (not shown) for storing a control program. As an arithmetic processing unit, MPU and CPU are illustrated. A memory is exemplified as the memory. The first controller 18 may be configured of a single controller that performs centralized control, or may be configured of a plurality of first controllers 18 that perform distributed control in cooperation with each other.

  The first memory 19 holds the date of replacement determined by the first controller 18. Specifically, the first memory 19 is a semiconductor memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory). However, when the first controller 18 includes a memory, the first memory 19 is realized as the memory. It is also good.

[Battery module]
Next, the detailed configuration of the storage battery module 20 will be described. FIG. 5 is a schematic external view of the storage battery module 20. As shown in FIG. FIG. 6 is a block diagram showing a functional configuration of the storage battery module.

  As shown in FIGS. 5 and 6, the storage battery module 20 is an example of a storage battery, and includes a battery block 21 including a plurality of single cells 21a, a second controller 22, a second storage 23, and protection. The circuit 24, the second terminal 25, the second display 26, the controller 27, and the temperature sensor 28 are provided.

  The battery block 21 is configured by connecting a plurality of single cells 21 a in parallel and in series. The unit cell 21a is, for example, a unit cell that can be charged and discharged, such as a lithium ion secondary battery. In the example of FIG. 6, four unit cells 21a are connected in parallel, and four unit cells 21a connected in parallel are connected in series.

  The second controller 22 charges and discharges the battery block 21 based on the instruction received from the first controller 18 via the first communication terminal 15 b and the second communication terminal 25 b. At the time of discharge, power is output from the battery block 21 to the storage system 10 via the first power terminal 15a and the second power terminal 25a. During charging, power is input from the storage system 10 to the battery block 21 through the first power terminal 15a and the second power terminal 25a.

  In addition, the second controller 22 acquires information on the state of the battery block 21 (hereinafter referred to as "state information"). Specifically, the second controller 22 sets the voltage value, current value, SOC (State Of Charge), charge / discharge cycle number, internal resistance value, etc. of the battery block 21 as the state information of the battery block 21. get. The second controller 22 stores the acquired state information in the second memory 23.

  Further, the second controller 22 reads out the state information of the battery block 21 from the second storage 23, and the read out state information is transmitted to the first controller 18 via the first communication terminal 15b and the second communication terminal 25b. Send to Moreover, when acquiring the voltage value or electric current value of the battery block 21, the 2nd controller 22 may have a sensor which measures the said voltage value or electric current value.

  Specifically, the second controller 22 is realized by a processor, a microcomputer, a dedicated circuit or the like, but may have a control function. The second controller 22 may include, for example, an arithmetic processing unit (not shown) and a storage unit (not shown) for storing a control program. As an arithmetic processing unit, MPU and CPU are illustrated. A memory is exemplified as the memory. The second controller 22 may be configured of a single controller that performs centralized control, or may be configured of a plurality of second controllers 22 that perform distributed control in cooperation with each other.

  The second memory 23 holds the state information of the battery block 21 acquired by the second controller 22. Specifically, the second memory 23 is a semiconductor memory such as an EEPROM. However, when the second controller 22 includes a memory, the second memory 23 may be realized as the memory.

  The protection circuit 24 is a protection circuit that detects an abnormality of the battery block 21 and stops charging and discharging of the battery block 21 when an abnormality is detected. For example, when the temperature obtained from the temperature sensor 28 is equal to or higher than a predetermined temperature, the protection circuit 24 detects that the battery block 21 is abnormal, and stops charging and discharging of the battery block 21.

  The second terminal unit 25 is electrically and mechanically connected to the first terminal unit 15 of the storage system 10. The second terminal unit 25 includes a second power terminal 25a for transmitting and receiving power, and a second communication terminal 25b for communication. The second power terminal 25 a is electrically and mechanically connected to the first power terminal 15 a of the first terminal portion 15, and the second communication terminal 25 b is a first communication terminal 15 b of the first terminal portion 15. And are electrically and mechanically connected.

  The second display 26 is an example of a display, and displays the state information of the battery block 21 stored in the second storage 23 such as the SOC of the battery block 21 based on the control of the second controller 22. Specifically, the second display 26 includes a display panel such as a liquid crystal panel or an organic EL panel, and peripheral circuits for displaying an image on the display panel.

  The operating unit 27 is a push button. The operator 27 is pressed by the user when the switching of the connection position of the storage battery module 20 is completed. When the controller 27 is pressed, the second controller 22 transmits information (hereinafter referred to as "completion information") indicating that the switching of the connection positions of the plurality of storage battery modules 20 is completed, and the first controller 18 accepts completion information. A component such as the controller 27 may be included in the storage system 10. That is, the user may press a button or the like provided in the storage system 10 when the replacement of the connection position of the storage battery module 20 is completed.

  The temperature sensor 28 is a sensor for measuring temperature, which is composed of a thermistor or a thermocouple. The temperature measured by the temperature sensor 28 is held by the second memory 23 as state information. The second memory 23 holds, for example, the average of the temperatures measured by the plurality of temperature sensors 28 as the temperature of the battery block 21.

[Change connection position]
Here, the effect obtained by replacing the connection positions of the plurality of storage battery modules 20 will be described. FIG. 7 is a diagram for explaining the effect obtained by switching the connection positions of the plurality of storage battery modules 20. In FIG. 7, an example in which the connection positions of the storage battery module A1 and the storage battery module A4 are switched is described. The vertical axis in FIG. 7 indicates the degree of deterioration (SOH) and the horizontal axis indicates time. As described above, there is a correlation between SOH and the internal resistance value, and if the internal resistance value is plotted on the vertical axis instead of SOH, a graph in which the internal resistance value increases with time can be obtained.

  It is assumed that both the storage battery module A1 and the storage battery module A4 are new at the start of use and have the same degree of deterioration. Further, it is determined that the storage battery module A1 and the storage battery module A4 are all unusable when the degree of deterioration reaches a value indicating the life (hereinafter, referred to as "life value").

  In the example of FIG. 7, the storage battery module A1 is connected to a position where the temperature is higher than that of the storage battery module A4, and the change with time of the degree of deterioration is large. That is, the deterioration rate of the storage battery module A1 is faster than that of the storage battery module A4, and the inclination of the degree of deterioration in FIG. 7 is large.

  Therefore, if the connection position is not replaced, the storage battery module A1 can not be used after the period Ta1 from the start of use, and the storage battery module A4 can not be used after the period Ta4 is longer than the period Ta1. Become.

  As described above, when storage battery modules A1 to A4 are connected in series, if one storage battery module A1 becomes unusable, it can be used as a power source even if other storage battery modules A2 to A3 are usable. I can not use it. Therefore, in order to use storage battery modules A1 to A4 connected in series for a long time without maintenance, it is effective to improve the life of storage battery module A1 having a high deterioration rate.

  Here, if the connection position is replaced after the use of the storage battery modules A1 and A4 starts, the degradation rate of the storage battery module A1 becomes equal to the degradation rate of the storage battery module A4 before replacement. Therefore, the life of storage battery module A1 is improved. In the example of FIG. 7, the storage battery module A1 becomes unusable after the first period T1 longer than the period Ta1.

  On the other hand, the deterioration rate of the storage battery module A4 is equal to the deterioration rate of the storage battery module A1 before replacement. Therefore, the life of the storage battery module A4 is reduced, and the storage battery module A4 becomes unusable, for example, after the elapse of the first period T1 shorter than the period Ta4.

  As described above, when the connection positions of the storage battery module A1 and the storage battery module A4 are interchanged, it is possible to suppress the variation in the life of the storage battery module A1 and the storage battery module A4.

  Note that replacing the connection position stores the storage battery module A1 stored in the storage location A1 in the storage location A4, and stores the storage battery module A4 stored in the storage location A4 in the storage location A1. It means that.

In FIG. 7, the storage battery module A1 and the storage battery module A4 reach an equivalent timing, that is, the life value is reached when the first period T1 elapses, by replacing the connection positions of the storage battery module A1 and the storage battery module A4 once. An example is shown. Such a first period T1 is expressed by the following equation 1 using a period Ta1 determined by the initial deterioration rate of the storage battery module A1 and a period Ta4 determined by the initial deterioration rate of the storage battery module A4. .
T1 = 2 × Ta1 × Ta4 / (Ta1 + Ta4) ···· (Expression 1)

  Here, in order to cause the storage battery module A1 and the storage battery module A4 to reach the life value at the same timing, the storage battery module A1 at a timing when just half of the first period T1 has elapsed from the start of using the storage battery module A1 and the storage battery module A4. And it is good for exchange of the connection position of storage battery module A4 to be performed. However, the connection positions of the storage battery module A1 and the storage battery module A4 may be switched at timing before half of the first period T1 elapses from the start of use of the storage battery module A1 and the storage battery module A4. FIG. 8 is a diagram showing an example of such exchange of connection positions.

  In FIG. 8, the first replacement of the connection positions of the storage battery module A1 and the storage battery module A4 is performed at timing t1 before half of the first period T1 elapses from the start of use. Under this condition, the storage battery module A1 and the storage battery module A4 can not reach the life value at the same timing. However, when the connection position is replaced twice or more, the storage battery module A1 and the storage battery module A4 can reach the life value at the same timing.

  In FIG. 8, the storage battery module A <b> 1 and the storage battery module A <b> 4 can reach the life value at the same timing by performing the second switching of the connection position at the timing t <b> 2.

  According to the second replacement of the connection position, the storage battery module A4 stored in the storage location A1 in the first replacement is again stored in the storage location A4, and is stored in the storage location A4 in the first replacement. The storage battery module A1 is stored again in the storage location A1.

  The timing at which the second connection position exchange is performed is preferably timing t2, but may be another timing. The timing at which the second connection position exchange is performed may be, for example, timing before half of the second period T2 shown in FIG. 8 has elapsed. The second period T2 is a period from a timing t3 at which the degree of deterioration of the storage battery module A1 and the storage battery module A4 whose connection positions have been switched are equal to an end timing t4 of the first period T1. In other words, the timing at which the second connection position exchange is performed may be anywhere in the third period T3 which is a period from the timing t1 to the timing t2 shown in FIG.

  The timing at which the second connection position exchange is performed may be timing before timing t3 at which the degree of deterioration of the storage battery module A1 and the storage battery module A4 become equal. That is, the timing at which the second switching of the connection position is performed may be anywhere within the fourth period T4 of FIG.

  In addition, even if it replaces | exchanges a connection position, it may not be able to make a storage battery module A1 and a storage battery module A4 reach the lifetime value at equal timing. FIG. 9 is a diagram showing still another example of such exchange of connection positions.

  In FIG. 9, replacement of the first connection position of the storage battery module A1 and the storage battery module A4 is performed at timing t5 after half of the first period T1 has elapsed from the start of use of the storage battery module A1 and the storage battery module A4. If it does so, storage battery module A1 and storage battery module A4 can not be made to reach a life value at equivalent timing.

  Therefore, the first replacement of the connection positions of the storage battery module A1 and the storage battery module A4 may be performed at a timing before half of the first period T1 elapses from the start of use of the storage battery module A1 and the storage battery module A4. Thus, the possibility of causing the storage battery module A1 and the storage battery module A4 to reach the life value with equal timing can be left.

  In the above, the effect obtained by switching the connection position of the several storage battery module 20 was demonstrated. In addition, exchange of a connection position is useful also in the several storage battery module 20 connected in parallel. The plurality of storage battery modules 20 connected in parallel are different from the plurality of storage battery modules 20 connected in series, and even if one of the storage battery modules 20 reaches the life value, it can be used as a power supply. However, when the plurality of storage battery modules 20 reach the life value in the near period, they can be collectively replaced with a new storage battery module 20 at one time. That is, the frequency of maintenance can be reduced.

[Operation]
Next, the operation of power storage system 10 for prompting the user to change the connection position as described above will be described using the flowchart of FIG. FIG. 10 is a flowchart of the operation of the storage system 10.

  First, the first controller 18 acquires the degree of deterioration of the plurality of storage battery modules 20 (S11). The first controller 18 obtains, for example, the deterioration degree of the storage battery module A1 from the storage battery module A1, and acquires the deterioration degree of the storage battery module A4 from the storage battery module A4. Acquisition of the degree of deterioration is performed, for example, every predetermined period after the start of use of the storage system 10.

  In the embodiment, the first controller 18 acquires the internal resistance value of the storage battery module 20 as the degree of deterioration. The internal resistance value indicates that the larger the resistance value, the more the deterioration.

  The internal resistance value is calculated from the relationship between voltage and current at the time of charge or discharge of the storage battery module 20. That is, when the storage battery module 20 is charged or discharged, the second controller 22 of the storage battery module 20 can calculate the internal resistance value. The second controller 22 periodically calculates the internal resistance value, and stores the calculated internal resistance value in the second memory 23. When the first controller 18 transmits a request for acquiring the internal resistance value to the second controller 22, the second controller 22 reads the internal resistance value from the second memory 23 and transmits the internal resistance value to the first controller 18. Thereby, the first controller 18 can acquire the internal resistance value of the storage battery module 20 as the degree of deterioration.

  Next, the first controller 18 determines whether there is a difference between the degree of deterioration of one storage battery module 20 and the degree of deterioration of another storage battery module 20 by a predetermined value or more (S12). Specifically, for example, the first controller 18 determines whether or not there is a difference between the degree of deterioration of the storage battery module A1 and the degree of deterioration of the storage battery module A4 by a predetermined value or more (S12). The predetermined value may be determined experimentally or empirically based on the internal resistance value of storage battery module 20 when not in use.

  If the first controller 18 determines that the degree of deterioration does not have a difference greater than or equal to a predetermined value (No in S12), the process ends. When the first controller 18 determines that the degree of deterioration has a difference of a predetermined value or more (Yes in S12), the first controller 18 determines a replacement date (S13).

  First, the first controller 18 calculates the deterioration rate of each of the plurality of storage battery modules 20 based on the degree of deterioration acquired in step S11. The deterioration rate indicates the change with time of the degree of deterioration as shown in FIG. 7 to FIG. 9, so the calculation of the degree of deterioration requires the degree of deterioration over a certain period. Therefore, the first controller 18 may periodically acquire the degree of deterioration and store the degree of deterioration over a certain period in the first memory 19. However, the step S11 collectively acquires the degree of deterioration over a certain period You may In the calculation of the deterioration rate, approximation calculations such as first order approximation are performed as necessary.

  Next, the first controller 18 calculates the period until each of the plurality of storage battery modules 20 reaches the life value based on the calculated deterioration rate, and calculates the first period T1 based on the calculated period. . In the example of FIG. 8, the first controller 18 calculates the period Ta1 and the period Ta4. Then, the first controller 18 calculates the first period T1 based on the equation (1).

  Next, the first controller 18 generates an image with the timing before the half of the first period T1 elapses as the date of replacement, and causes the first display 16 to display the generated image. That is, the first display 16 displays an image indicating the date of replacement (S14). FIG. 11 and FIG. 12 are diagrams showing examples of images indicating the date of replacement.

  When the vendor exchanges the connection positions of the plurality of storage battery modules 20, as shown in FIG. 11, an image prompting communication with the facility vendor is displayed. Further, when general users change the connection positions of the plurality of storage battery modules 20, a work procedure including a method of replacing the plurality of storage battery modules 20 is displayed as shown in FIG.

  The date of replacement may be any timing before half of the first period T1 elapses, and is not particularly limited. For example, the first controller 18 may set the replacement date earlier as the difference in the degree of deterioration between the plurality of storage battery modules 20 increases. The display in step S14 is performed before the date of replacement displayed on the image.

  Next, the first controller 18 determines whether or not the completion information indicating that the switching of the connection position of the storage battery module 20 is completed is received (S15). When the completion information is not accepted (No in S15), the determination in step S15 is repeated (S15).

  When switching of the connection position of the storage battery module 20 is completed and the controller 27 of the storage battery module 20 whose connection position has been switched is pressed, completion information is transmitted by the second controller 22 and the first controller 18 Accepts the completion information transmitted by the second controller 22 (Yes in S15).

  Then, the first controller 18 generates an image indicating that the switching of the connection position is completed, and causes the first display 16 to display the generated image. That is, the first display 16 displays an image indicating that the switching of the connection position is completed (S16). FIG. 13 is a diagram showing an example of an image indicating that the switching of connection positions is completed.

  Here, as shown in FIG. 13, when the switching of the connection position is performed a plurality of times, the date of the next switching may be included in the image indicating that the switching of the connection position is completed. That is, the first controller 18 may cause the first display 16 to display an image indicating the next replacement due date.

  Thereby, power storage system 10 can notify the user of the next replacement date. The image indicating the next replacement date may be displayed after the image indicating that the connection position replacement is completed is displayed, in addition to the image indicating that the connection location replacement is completed.

  The operation of the storage system 10 has been described above. Note that the flowchart of FIG. 10 is an example, and the order of a plurality of steps may be interchanged as much as possible, or some steps may be omitted. Also, a plurality of steps may be performed collectively, or a plurality of steps may be performed in parallel.

[Modification 1]
The first controller 18 may cause the first display 16 to display the arrangement of the plurality of storage battery modules 20 in the storage system 10 and information indicating the degree of deterioration of each of the plurality of storage battery modules 20. 14 and 15 are diagrams showing examples of images including the arrangement of the plurality of storage battery modules 20 and information indicating the degree of deterioration of each of the plurality of storage battery modules 20.

  In the image shown in FIG. 14, the arrangement of the plurality of storage battery modules 20 is shown. Moreover, the temperature of each of the plurality of storage battery modules 20 is included in the image shown in FIG. 14 as information indicating the degree of deterioration. The temperature at this time is the temperature of the battery block 21 measured by the temperature sensor 28, but when the temperature sensor is provided in the storage location of the storage battery module 20, it may be the temperature of the storage location.

  Moreover, arrangement | positioning of the several storage battery module 20 is shown by the image shown by FIG. Moreover, SOH of each of the plurality of storage battery modules 20 is included in the image shown in FIG. 15 as information indicating the degree of deterioration.

  As described above, by displaying the arrangement of the plurality of storage battery modules 20 and the information indicating the degree of deterioration of each of the plurality of storage battery modules 20, the user can replace the storage battery module by itself in consideration of the displayed image. 20 can be selected.

  In addition, as information which shows a degradation degree, the internal resistance value of the storage battery module 20 etc. are illustrated other than that, and such information can be acquired from the storage battery module 20. FIG. The information indicating the degree of deterioration may be any information as long as the information indicates the degree of deterioration or the deterioration rate directly or indirectly, and is not particularly limited.

[Modification 2]
In the above embodiment, the images as shown in FIGS. 11 to 15 were displayed on the first display 16. That is, the storage system 10 was controlled as a display device. However, the images shown in FIGS. 11-15 may be displayed on the second display 26 of the storage battery module 20. That is, storage battery module 20 may be controlled as a display. At this time, the process for displaying the image may be performed by one of the first controller 18 and the second controller 22, or the first controller 18 and the second controller 22 cooperate to display the image. Processing may be performed to display the

  Moreover, each image as shown by FIGS. 11-15 may be displayed on the indicator 41 with which the server apparatus 40 is provided. That is, the server device 40 may be controlled as a display device. At this time, processing for displaying an image may be performed by one of the first controller 18 and a controller (not shown) provided in the server device 40, or provided in the first controller 18 and the server device 40. The controller may cooperate to perform processing for displaying the image.

  The images as shown in FIGS. 11 to 15 may be displayed on the display 51 provided in the portable terminal 50. That is, the portable terminal 50 may be controlled as the display device. At this time, the process for displaying the image may be performed by any of the first controller 18, the controller included in the server device 40, and the controller (not shown) included in the portable terminal 50. Two or more of the first controller 18, the controller included in the server device 40, and the controller included in the portable terminal 50 may cooperate to perform processing for displaying an image.

[Effects, etc.]
As described above, the control method of the storage system 10 provided with the first display 16 is a plurality of storage battery modules 20 detachably connected to the storage system 10, and the plurality of storage battery modules 20 having different degrees of deterioration And (a) displaying on the first display 16 an image indicating a date of replacement of the connection position. By replacing the connection positions of the plurality of storage battery modules 20, the period from the start of use of the plurality of storage battery modules 20 to the timing when the plurality of storage battery modules 20 reach the deterioration degree indicating the life at the same timing Assuming that the period is T1, the replacement date is set to a timing before half of the first period T1 has elapsed. The first display 16 is an example of a display, and the storage battery module 20 is an example of a storage battery.

  Thereby, the dispersion | variation in the lifetime of the several storage battery module 20 can be suppressed. Specifically, when the deterioration rate of the storage battery module 20 having a large degree of deterioration is suppressed and the plurality of storage battery modules 20 are connected in series, the period in which the plurality of storage battery modules 20 can be used without maintenance can be extended it can. Further, when the plurality of storage battery modules 20 are connected in parallel, the replacement timing of the plurality of storage battery modules 20 can be brought close to facilitate maintenance.

  Note that the present disclosure may be implemented as a control method of a display device. In the above embodiment, the storage system 10 is used as the display device, but the display device may be the storage battery module 20, the server device 40, or the portable terminal 50. That is, the display provided in the display device may be the second display 26, the display 41, or the display 51.

  Further, the control method of power storage system 10 further includes, after the connection positions of the plurality of storage battery modules 20 being switched at a timing before a half of the first period T1 elapses, A step (b) of displaying on the display 16 may be provided. The next replacement due date may be set to a timing before the deterioration degrees of the plurality of storage battery modules 20 whose connection positions are replaced are equal.

  If the connection position is replaced at such a timing, it is possible to cause the plurality of storage battery modules 20 to reach the life value at the same timing by performing replacement of the connection position several times after the relevant timing. Become.

  Further, the control method of power storage system 10 further includes, after the connection positions of the plurality of storage battery modules 20 being switched at a timing before a half of the first period T1 elapses, A step (b) of displaying on the display 16 may be provided. The date for the next replacement is before a half of the second period T2, which is a period from the timing when the deterioration degree of the plurality of storage battery modules 20 whose connection positions are replaced become equal, to the end timing of the first period T1 elapses. It may be set to timing.

  If the connection position is replaced at such a timing, it is possible to cause the plurality of storage battery modules 20 to reach the life value at the same timing by performing replacement of the connection position several times after the relevant timing. Become.

  In addition, the control method of power storage system 10 may further include step (c) of receiving information indicating that the switching of the connection positions of the plurality of storage battery modules 20 is completed. And step (b) may be performed after step (c).

  Thereby, the control method of a display system can display the image which shows the date of the next exchange on the 1st indicator 16 after a user has replaced the connection position of the several storage battery module 20. FIG.

  Further, the date of replacement may be set to the timing when the date of replacement is earlier as the difference in the degree of deterioration among the plurality of storage battery modules 20 is larger.

  As a result, the control method of power storage system 10 can display an image indicating a replacement date earlier as the difference in the degree of deterioration is larger.

  In addition, the control method of power storage system 10 further includes the step (d) of displaying the arrangement of the plurality of storage battery modules 20 in the storage system 10 and information indicating the degree of deterioration of each of the plurality of storage battery modules 20. Good.

  Thereby, the user can select the storage battery module 20 to be replaced by itself in consideration of the displayed image.

  Further, the display system 100 is a plurality of storage battery modules 20 detachably connected to the storage system 10, and is a first storage that holds a date for replacing connection positions of the plurality of storage battery modules 20 having different degrees of deterioration. 19 is provided. The display system 100 also includes a first display 16 and a first controller 18 that causes the first display 16 to display an image indicating the date of replacement held in the first storage 19. The period from the start of use of the plurality of storage battery modules 20 to the relevant timing when the plurality of storage battery modules 20 reach the deterioration degree indicating the life at the same timing by replacing the connection position of the plurality of storage battery modules 20 If it is one period, the date of replacement is set to the timing before half of the first period T1 passes. The first display 16 is an example of a display. The display may be the second display 26, the display 41 or the display 51. The storage battery module 20 is an example of a storage battery. The first memory 19 is an example of a memory. The storage may be the second storage 23, a storage (not shown) of the server device 40, or a storage (not shown) of the portable terminal 50.

  Thereby, the same effect as the control method of the display system 100 can be obtained.

(Other embodiments)
As described above, the embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and is also applicable to embodiments in which changes, replacements, additions, omissions, and the like are appropriately made. Moreover, it is also possible to combine each component demonstrated by the said embodiment, and to set it as a new embodiment.

  For example, on the display, in the arrangement of FIG. 3, an instruction to replace the plurality of storage battery modules 20 belonging to row B and the plurality of storage battery modules 20 belonging to row C may be displayed. That is, an instruction to replace the storage battery module row connected in parallel for each row may be displayed.

  Moreover, the selection method of the two storage battery modules 20 used as the object of replacement | exchange is not specifically limited. For example, among the four storage battery modules 20 connected in series, the storage battery module 20 having the highest degree of deterioration and the storage battery module 20 having the lowest degree of deterioration are identified, and two identified storage battery modules 20 are targets for replacement. May be selected. Similarly, for example, among the four storage battery modules 20 connected in series, the storage battery module 20 having the second largest deterioration degree and the storage battery module 20 having the third largest deterioration degree are identified and identified. The storage battery module 20 may be selected as a target of replacement. Further, for example, among all the storage battery modules 20 connected to the storage system 10, the storage battery module 20 having the largest degree of deterioration and the storage battery module 20 having the smallest degree of deterioration are identified, and two identified storage battery modules 20 may be selected as a target of replacement.

  In the above embodiment, each component may be configured by dedicated hardware or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory.

  As mentioned above, although the control method and display system of a display concerning one or a plurality of modes of this indication were explained based on an embodiment, the present invention is not limited to this embodiment. Without departing from the spirit of the present invention, various modifications that can be conceived by those skilled in the art are applied to the present embodiment, and a form constructed by combining components in different embodiments is also one or more of the present invention. It may be included within the scope of the aspect of.

  The present disclosure is useful as, for example, a control method of a display device that can suppress variation in life of a plurality of storage batteries in a storage system including a plurality of storage batteries.

DESCRIPTION OF SYMBOLS 10 electrical storage system 11 exterior body 12 exterior body main body 13 door 14 power supply 15 1st terminal part 15a terminal for 1st electric power 15b terminal for 1st communication 16 1st indicator 17 communication device 18 1st controller 19 1st memory Reference Signs List 20 storage battery module 21 battery block 21a single battery 22 second controller 23 second memory 24 protection circuit 25 second terminal 25a second power terminal 25b second communication terminal 26 second display 27 controller 28 temperature sensor Reference Signs List 30 communication device 40 server device 41 51 display 50 portable terminal 60 power system 70 internet 100 display system

Claims (7)

A control method of a display device provided with a display, comprising:
Displaying a plurality of storage batteries that are detachably connected to the storage system, the images showing a date of replacement of connection positions of the plurality of storage batteries having different degrees of deterioration on the display (a);
Assuming that the period from the start of use of the plurality of storage batteries to the timing is the first period when the plurality of storage batteries reach at the same timing as the deterioration degree indicating the life due to replacement of the connection position of the plurality of storage batteries. The date of replacement is set to a timing before half of the first period has elapsed.
Display control method. Furthermore, after the connection positions of the plurality of storage batteries are switched at a timing before a half of the first period elapses, a step (b) of displaying on the display an image indicating a next replacement date is provided.
The date of the next replacement is set to a timing before the deterioration degree of the plurality of storage batteries whose connection positions are switched become equal.
A control method of a display device according to claim 1. Furthermore, after the connection positions of the plurality of storage batteries are switched at a timing before a half of the first period elapses, a step (b) of displaying on the display an image indicating a next replacement date is provided.
The next replacement due date is a timing before a half of the second period, which is a period from the timing when the deterioration degree of the plurality of storage batteries whose connection positions are replaced become equal, to the end timing of the first period. Set to,
A control method of a display device according to claim 1. And a step (c) of receiving information indicating that the replacement of the connection positions of the plurality of storage batteries is completed,
The step (b) is performed after the step (c),
The control method of the display apparatus of Claim 2 or 3. The date of the replacement is set earlier as the difference in the degree of deterioration between the plurality of storage batteries is larger.
The control method of the display apparatus of any one of Claims 1-4. And a step (d) of displaying an arrangement of the plurality of storage batteries in the storage system and information indicating a degree of deterioration of each of the plurality of storage batteries.
The control method of the display apparatus of any one of Claims 1-5. A plurality of storage batteries that are detachably connected to the storage system, and a storage that holds a date for replacing connection positions of the plurality of storage batteries having different degrees of deterioration;
A display,
A controller that causes the display to display an image indicating the date of replacement stored in the memory;
Assuming that the period from the start of use of the plurality of storage batteries to the timing is the first period when the plurality of storage batteries reach at the same timing as the deterioration degree indicating the life due to replacement of the connection position of the plurality of storage batteries. The date of replacement is set to a timing before half of the first period has elapsed.
Display system.

Images