Battery status display device, battery status display method and storage medium

Abstract

A battery status display device comprises: an acquisition unit, which acquires the full charge capacity of a secondary battery mounted on a vehicle; a display unit, which displays an image; and a display control unit, which controls the display unit so that the display unit displays, at a time point before a specified time point, a ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and displays, at a time point after the specified time point, a ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point.

Description

Technical Field

[0001] The invention relates to a battery status display device, a battery status display method and a storage medium. Background Art

[0002] Conventionally, there is a technology for displaying the battery status of a secondary battery in an electric vehicle (see, for example, Patent Document 1). When displaying the battery status of a secondary battery, for example, an icon is used to display the ratio of the current fully charged capacity of the secondary battery to the initial fully charged capacity.

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent Document 1: WO2016 / 194082 Summary of the invention

[0006] Problems to be Solved by the Invention

[0007] The secondary battery installed in the electric vehicle deteriorates with use, so when the electric vehicle is resold, it is assumed that the battery will be displayed as a state in which the deterioration has progressed since the time of purchase. Therefore, the buyer may feel that he has been cheated and feel uncomfortable.

[0008] The present invention has been made in consideration of such a situation, and provides a battery status display device, a battery status display method, and a storage medium that can reduce the discomfort caused to the user.

[0009] Solutions to Solve Problems

[0010] The battery status display device, battery status display method and storage medium of the present invention adopt the following structure.

[0011] (1): A battery status display device according to one embodiment of the present invention comprises: an acquisition unit, which acquires the full charge capacity of a secondary battery mounted on a vehicle; a display unit, which displays an image; and a display control unit, which controls the display unit so that the display unit displays, at a time point before a specified time point, a ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and displays, at a time point after the specified time point, an image based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point.

[0012] (2) Based on the solution of (1) above, the predetermined time point is a time point when the vehicle is resold.

[0013] (3): Based on the scheme of (1) above, the display control unit controls the display unit so that the display unit displays, at a time point after the execution switch is operated, a ratio of the full charge capacity at the time point after the execution switch is operated to the full charge capacity at the time point when the execution switch is operated.

[0014] (4): Based on the solution of (1) above, the execution switch is provided on the vehicle.

[0015] (5) Based on the scheme of (1) above, the display control unit causes the display unit to display information indicating that a display is made based on the ratio of the full charge capacity to the full charge capacity at the specified time point, with the specified time point as a reference.

[0016] (6): Based on the scheme of (5) above, the display control unit causes the display unit to display in a form that is difficult for ordinary users to understand: information displayed based on the ratio of the full charge capacity to the full charge capacity at the specified time point based on the specified time point.

[0017] (7): In a battery status display method of one embodiment of the present invention, a computer performs the following processing: obtains the full charge capacity of a secondary battery mounted on a vehicle; controls the display of an image so that at a time point before a specified time point, a display is made based on the ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and at a time point after the specified time point, a display is made based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point; and displays the image.

[0018] (8): A storage medium of one embodiment of the present invention stores a program, which causes a computer to perform the following processing: obtain the full charge capacity of a secondary battery mounted on a vehicle; control the display of an image so that at a time point before a specified time point, a display is made based on the ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and at a time point after the specified time point, a display is made based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point; and display the image.

[0019] Effects of the Invention

[0020] According to (1) to (8), it is possible to reduce the discomfort caused to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a diagram showing an example of a configuration of a vehicle 10 including a battery state display device 100 according to an embodiment.

[0022] Figure 2 1 is a diagram illustrating a configuration of a vehicle interior of the vehicle 10 .

[0023] Figure 3 1 is a diagram showing an example of the full charge capacity map 151 .

[0024] Figure 4 This is a flowchart showing an example of processing executed by the battery status display device 100 .

[0025] Figure 5 This is a diagram showing an example of changes in the display of the battery status. DETAILED DESCRIPTION

[0026] Hereinafter, the embodiments of the battery status display device, the battery status display method and the storage medium of the present invention will be described with reference to the accompanying drawings. The following embodiments do not limit the invention involved in the technical solution, and not all combinations of the features described in the embodiments are essential for the solution of the invention. Although the vehicle 10 is an electric motor vehicle, the vehicle 10 can be a hybrid motor vehicle or a fuel cell vehicle as long as it is equipped with a secondary battery that supplies power for the vehicle 10 to travel.

[0027] Figure 1 1 is a diagram showing an example of a structure of a vehicle 10 including a battery status display device 100 according to an embodiment. Figure 1 As shown, the battery state display device 100 is installed in a plurality of vehicles 10. The battery state display device 100 displays the battery state of a storage battery (hereinafter, referred to as a secondary battery) mounted in the vehicle 10.

[0028] [Vehicle 10]

[0029] like Figure 1 As shown, the vehicle 10 includes, for example: a motor 12; a drive wheel 14; a brake device 16; a vehicle sensor 20; a PCU (Power Control Unit) 30; a battery 40; a battery sensor 42 such as a voltage sensor, a current sensor, and a temperature sensor; a charging port 70; an inverter 72; a steering switch 90; and a battery status display device 100.

[0030] The motor 12 is, for example, a three-phase AC motor. The rotor of the motor 12 is connected to the drive wheel 14. The motor 12 uses the supplied electric power to output power to the drive wheel 14. In addition, the motor 12 generates electric power using the kinetic energy of the vehicle when the vehicle is decelerating.

[0031] The brake device 16 includes, for example, a brake caliper, a hydraulic cylinder that transmits hydraulic pressure to the brake caliper, and an electric motor that generates hydraulic pressure in the hydraulic cylinder. The brake device 16 may also include a mechanism that transmits hydraulic pressure generated by operation of the brake pedal to the hydraulic cylinder via a master hydraulic cylinder as a backup. It should be noted that the brake device 16 is not limited to the structure described above, and may also be an electronically controlled hydraulic brake device that transmits the hydraulic pressure of the master hydraulic cylinder to the hydraulic cylinder.

[0032] The vehicle sensor 20 includes an accelerator opening sensor, a vehicle speed sensor, and a brake pedaling amount sensor. The accelerator opening sensor is mounted on an accelerator pedal, which is an example of an operating member that receives an acceleration instruction from the driver, to detect the amount of operation of the accelerator pedal, and outputs it to the control unit 36 ​​as the accelerator opening. The vehicle speed sensor includes, for example, a wheel speed sensor mounted on each wheel and a speed computer, and combines the wheel speeds detected by the wheel speed sensors to derive the vehicle speed (vehicle speed), and outputs it to the control unit 36 ​​and the display device 60. The brake pedaling amount sensor is mounted on the brake pedal to detect the amount of operation of the brake pedal, and outputs it to the control unit 36 ​​as the brake pedaling amount.

[0033] PCU 30 includes, for example, a converter 32, a VCU (Voltage Control Unit) 34, and a control unit 36. It should be noted that the configuration in which these components are integrated into one PCU 34 is merely an example, and these components may be arranged in a dispersed manner.

[0034] The converter 32 is, for example, an AC-DC converter. A DC side terminal of the converter 32 is connected to the DC link DL. The battery 40 is connected to the DC link DL via the VCU 34. The converter 32 converts the AC generated by the motor 12 into DC and outputs it to the DC link DL.

[0035] The VCU 34 is, for example, a DC-DC converter and boosts the power supplied from the battery 40 and outputs the boosted power to the DC link DL.

[0036] The control unit 36 ​​includes, for example, a motor control unit, a brake control unit, and a battery / VCU control unit. The motor control unit, the brake control unit, and the battery / VCU control unit may be replaced with separate control devices, such as a motor ECU, a brake ECU, and a battery ECU.

[0037] The motor control unit controls the motor 12 based on the output of the vehicle sensor 20. The brake control unit controls the brake device 16 based on the output of the vehicle sensor 20. The battery / VCU control unit calculates the SOC (State Of Charge: hereinafter also referred to as "battery charge rate") of the battery 40 based on the output of the battery sensor 42 installed on the battery 40. The battery / VCU control unit outputs the calculated SOC to the VCU 34. The VCU 34 increases the voltage of the DC link DL according to the instruction given by the battery / VCU control unit.

[0038] The battery 40 is, for example, a secondary battery such as a lithium-ion battery. The battery 40 stores electric power introduced from a charger 200 outside the vehicle 10, and discharges the electric power for driving the vehicle 10. The battery sensor 42 includes, for example, a current sensor, a voltage sensor, and a temperature sensor. The battery sensor 42 detects, for example, the current value, the voltage value, and the temperature of the battery 40. The battery sensor 42 outputs the detected current value, voltage value, temperature, etc. to the control unit 36.

[0039] The charging port 70 is provided facing the outside of the vehicle 10. The charging port 70 is connected to the charger 200 via the charging cable 220. The charging cable 220 includes a first plug 222 and a second plug 224. The first plug 222 is connected to the charger 200, and the second plug 224 is connected to the charging port 70. The electricity supplied from the charger 200 is supplied to the charging port 70 via the charging cable 220.

[0040] In addition, the charging cable 220 includes a signal cable attached to the power cable. The signal cable mediates communication between the vehicle 10 and the charger 200. Therefore, a power connector and a signal connector are provided on the first plug 222 and the second plug 224, respectively.

[0041] Inverter 72 is provided between charging port 70 and battery 40 . Inverter 72 converts a current, such as an alternating current, introduced from charger 200 via charging port 70 into a direct current. Inverter 72 outputs the converted direct current to battery 40 .

[0042] The steering switch 90 includes an execution switch 90A and a changeover switch 90B. The execution switch 90A outputs calibration information to the battery state display device 100 in response to a pressing operation by the driver's finger. The changeover switch 90B outputs a signal for switching the display of the battery state display device 100 in response to a pressing operation by the driver's finger.

[0043] Figure 2 1 is a diagram illustrating a structure inside the vehicle 10. Figure 2As shown, the vehicle 10 is provided with, for example, a display device 60, a steering switch 90, a steering wheel 91 for controlling the steering of the vehicle 10, a front windshield 92 for distinguishing between the outside of the vehicle and the interior of the vehicle, a dashboard 93, a first display device 94, a second display device 95, and an in-disk area display 97.

[0044] The display device 60 is arranged, for example, on an instrument panel portion provided with instruments such as a speedometer on an instrument panel 93 in front of a driver's seat. The steering switch 90 is arranged on a steering wheel 91. The steering switch 90 is an input device arranged at a position that can be operated by the fingers of the driver holding the steering wheel 91. The execution switch 90A and the changeover switch 90B in the steering switch 90 are respectively arranged at the right end of the steering switch 90, and the execution switch 90A is arranged above the changeover switch 90B.

[0045] The front windshield glass 92 is a light-transmitting member. A first display device 94 and a second display device 95 are provided near the left front of a driver's seat 96 on an instrument panel 93 in the vehicle cabin.

[0046] The first display device 94 is, for example, a liquid crystal display arranged in the center of the instrument panel 93. The first display device 94 is, for example, a touch panel that receives input operations performed by the operator's finger contact. The first display device 94 displays, for example, an image corresponding to a navigation process executed by a navigation device (not shown) mounted on the vehicle 10, or displays an image of the other party in a videophone call.

[0047] The second display device 95 is a liquid crystal display arranged on the instrument panel 93 at a position higher than the first display device 94. The second display device 95 is, for example, a touch panel that receives input operations performed by contact of an operator's finger. Compared with the first display device 94, the second display device 95 is arranged at a position that is easy for the driver of the vehicle 10 to visually confirm. Compared with the first display device 94, the second display device 95 is arranged at a position that the driver driving the vehicle 10 can visually confirm with a smaller line of sight. Compared with the first display device 94, the second display device 95 is, for example, arranged at a position closer to the front windshield 92, or at a position closer to the driver's forward gaze range in a suitable driving posture. The second display device 95 displays TV programs, plays DVDs, or displays the contents of downloaded movies, etc.

[0048] The in-disk area display 97 is, for example, arranged on the upper part of the steering wheel 91. The in-disk area display 97 displays, for example, the speed of the vehicle 10. The display device 60 may also be arranged at another position such as the position where the in-disk area display 97 is arranged. The display contents of each display device of the display device 60, the first display device 94, the second display device 95, and the in-disk area display 97 may also be replaced as appropriate.

[0049] [Battery Status Display Device 100]

[0050] The battery status display device 100 includes an acquisition unit 110, a display control unit 120, a display unit 130, and a storage unit 150. The acquisition unit 110 and the display control unit 120 are implemented by, for example, a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Some or all of these components can also be implemented by hardware (including circuitry) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), GPU (Graphics Processing Unit), etc., or can be implemented by the coordination of software and hardware. The program can be pre-stored in a storage device (non-temporary storage medium) such as an HDD (Hard Disk Drive) or a flash memory, or can be stored in a removable storage medium (non-temporary storage medium) such as a DVD or CD-ROM, and installed by assembling the storage medium in a drive device. The storage unit 150 is implemented by the aforementioned storage device. The storage unit 150 stores various information.

[0051] The acquisition unit 110 measures the period (years) that has passed since the battery 40 was mounted on the vehicle 10 (hereinafter referred to as the "initial time point") and the period (years) that has passed since the calibration information was output by the execution switch 90A. The acquisition unit 110 reads the full charge capacity map 151 stored in the storage unit 150. The acquisition unit 110 acquires the full charge capacity at the current time point and the full charge capacity of the battery 40 at the initial time point based on the measured period (years).

[0052] When the calibration information is output by the execution switch 90A, the acquisition unit 110 acquires the full charge capacity of the storage battery 40 at the time point (the time point when the calibration information is output by the execution switch 90A, hereinafter referred to as the "calibration start time point"). The acquisition unit 110 outputs the full charge capacity at the current time point, the initial time point, and the calibration start time point to the display control unit 120. The calibration start time point is a predetermined time point. When the execution switch 90A is operated multiple times and the calibration information is output multiple times, the calibration start time point is set each time, and the time point when the calibration information is output last becomes the calibration start time point.

[0053] The display control unit 120 uses the full charge capacity at the current time point, the initial time point, and the calibration start time point output by the acquisition unit 110 to display the battery status indicating the degradation ratio of the storage battery 40 on the display unit. The battery status of the storage battery 40 is different before and after the calibration start time point. Before the calibration start time point, the display control unit 120 displays the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point as the battery status of the storage battery on the display unit 130. At a time point later than the calibration start time point, the ratio of the full charge capacity at the current time point to the full charge capacity at the calibration start time point is displayed on the display unit 130 as the battery status of the storage battery.

[0054] The display control unit 120 displays the calibration execution information on the display unit 130 when the calibration execution information flag is turned on at a time point later than the calibration start time point. The display control unit 120 displays the calibration execution information on the display unit 130 in a form that is difficult for the driver, who is a general user, to understand. The display control unit 120 performs control to switch the display of the display device 60 according to the signal output by the switch 90B.

[0055] The display unit 130 is, for example, Figure 2 The display device 60 shown is configured as shown. The display unit 130 is, for example, an MID (multi-information display), and displays information in accordance with the control of the display control unit 120, such as the battery state of the battery 40 and calibration execution information.

[0056] The storage unit 150 stores a full charge capacity map 151 as one of various information. Figure 3 is a diagram showing an example of a full charge capacity map. Figure 3 As shown, the full charge capacity map 151 is represented by a graph in which the vertical axis represents the ratio of the full charge capacity relative to the initial time point and the horizontal axis represents the number of years from the initial time point. The full charge capacity map 151 represents the ratio of the full charge capacity in the number of years from the initial time point to the full charge capacity at the initial time point, assuming that the full charge capacity of the storage battery 40 at the initial time point is 100%.

[0057] exist Figure 3 In the example shown, the following full charge capacity map 151 is shown: the full charge capacity of the storage battery 40 at the initial time point is set to 100%, the full charge capacity after 3 years becomes 80% of the full charge capacity at the initial time point, and the full charge capacity after 8 years becomes 60% of the full charge capacity at the initial time point. It should be noted that the full charge capacity at the initial time point includes, for example, a design value when the storage battery 40 is manufactured in advance.

[0058] Next, the processing in the battery status display device 100 will be described. Figure 4 This is a flowchart showing an example of processing executed by the battery status display device 100 . Figure 4 The flowchart shown is repeatedly executed at regular intervals. The acquisition unit 110 in the battery status display device 100 first reads the full charge capacity map 151 from the storage unit 150 (step S101).

[0059] Next, the acquisition unit 110 acquires the period (number of years) that has passed since the initial time point in the measurement (step S103). Next, the acquisition unit 110 refers to the full charge capacity map 151 for the acquired elapsed time to acquire the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point, and multiplies the acquired ratio by the full charge capacity at the initial time point to acquire the full charge capacity at the current time point (step S105).

[0060] Next, the acquisition unit 110 outputs the acquired full charge capacity at the initial time point and the full charge capacity at the current time point to the display control unit 120 (step S107). Next, the acquisition unit 110 determines whether the execution switch 90A is operated and whether it is before the calibration start time point (whether calibration is not performed) (step S109).

[0061] When it is determined that the execution switch 90A has not been operated and it is before the calibration start time point (no calibration is performed), the display control unit 120 calculates the battery state of the battery 40 as the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point using the following formula (1) (step S111).

[0062] Battery status = Fully charged capacity at current time / Fully charged capacity at initial time…(1)

[0063] In step S109, when it is determined that the execution switch 90A is operated but not before the calibration start time point (calibration is performed at a time point later than the calibration start time point), the acquisition unit 110 refers to the calibration start time point with the full charge capacity map 151 to obtain the ratio of the full charge capacity at the calibration start time point to the full charge capacity at the initial time point, and multiplies the obtained ratio by the full charge capacity at the initial time point to obtain the full charge capacity at the calibration start time point (step S113). It should be noted that after calculating the full charge capacity at the calibration start time point once, the calculated value can be pre-stored in the storage unit 150, and the full charge capacity at the calibration start time point can be obtained by reading the stored full charge capacity at the calibration start time point.

[0064] Next, the acquisition unit 110 outputs the acquired full charge capacity at the calibration start time to the display control unit 120 (step S115). The display control unit 120 calculates the battery state of the storage battery 40 as the ratio of the full charge capacity at the current time point to the full charge capacity at the calibration start time point using the following formula (2) (step S117).

[0065] Battery status = Fully charged capacity at current time / Fully charged capacity at calibration start time…(2)

[0066] Next, the display control unit 120 turns on the calibration execution information flag (step S119 ).

[0067] Next, the display control unit 120 controls the display unit 130 so that the display is based on the battery status calculated in step S113 or step S117 (step S121). Furthermore, when the calibration execution information flag is on, the display control unit 120 controls the display unit 130 to display the calibration execution information (step S121). In this way, the battery status display device 100 ends. Figure 4 The process shown.

[0068] Next, an example of a display based on the battery state of the storage battery 40 will be described. Figure 5 4 is a diagram showing an example of changes in the display based on the battery state of the battery 40. Figure 5 , examples of images based on the battery status display at a time before the calibration start time point and a time point after the calibration start time point are shown for the storage battery 40 after three years and eight years from the initial time point, respectively.

[0069] The image based on the battery status display of the battery 40 is an image obtained by brightly displaying and darkly displaying the segments SG1 to SG6 displayed inside the display frame F. In the image based on the battery status display of the battery 40, the more segments SG (SG1 to SG6) are displayed darkly, the more deterioration of the battery 40 has progressed.

[0070] For example, when the battery 40 is in the initial state and has not yet started to deteriorate, all six segments SG are brightly displayed. As the battery state of the battery 40 progresses over time from the initial time point, the number of brightly displayed segments SG decreases and the number of darkly displayed segments SG increases.

[0071] For example, when three years have passed from the initial time point, the storage battery 40 deteriorates to the extent that the full charge capacity decreases from 100% to 80%. When calibration is not performed at the time point three years have passed from the initial time point but before the calibration start time point, for example, Figure 5 As shown in the upper left side of the figure, the entire first segment SG1 to the fourth segment SG4 and a part of the fifth segment SG5 of the six segments SG are displayed brightly, and the sixth segment SG6 is displayed darkly. This display corresponds to the situation where the full charge capacity at the current time point is equivalent to about 80% of the full charge capacity at the initial time point. In this way, the user can recognize that the deterioration of the storage battery 40 has begun.

[0072] Furthermore, when the time point at which eight years have passed since the initial time point is before the calibration start time point, the first segment SG1 to the third segment SG3 and part of the fourth segment SG4 are displayed brightly, and the fifth segment SG5 and the sixth segment SG6 are displayed darkly. This display corresponds to the situation where the full charge capacity at the current time point is equivalent to about 60% of the full charge capacity at the initial time point. By performing such a display, the user can recognize that the deterioration of the storage battery 40 has progressed.

[0073] In contrast, calibration is performed at a time point three years after the initial time point, and the time point three years after the initial time point is set as the calibration start time point. Figure 5 As shown on the right side of the display, the first segment SG1 to the sixth segment SG6 remain clearly displayed. This display corresponds to the situation where the full charge capacity at the current time point is equivalent to about 100% of the full charge capacity at the calibration start time point. In this way, the user can recognize that the degradation of the battery 40 has not progressed from the calibration start time point.

[0074] When calibration is performed at a time point 3 years after the initial time point and 8 years after the initial time point, the first segment SG1 to the fourth segment SG4 and part of the fifth segment SG5 are displayed brightly, and the sixth segment SG6 is displayed darkly. This display corresponds to the situation where the full charge capacity at the current time point is equivalent to about 75% of the full charge capacity at the calibration start time point. In this way, the proportion of the battery 40 deteriorating from the calibration start time point is indicated.

[0075] In addition, when starting calibration, if Figure 5 As shown on the right side of , the calibration execution light CL is lit. The calibration execution light CL is a light that displays information showing the battery status of the battery 40 as the ratio of the full charge capacity at the current time point relative to the full charge capacity at the calibration start time point. The calibration execution light CL may also be provided outside the display unit 130, for example, it may be provided at a corner of the instrument panel 93, or it may be provided at a position that is not visible from the driver's seat, such as the mounting position of the battery 40, the luggage room, etc. The calibration execution light CL is displayed in a smaller size at the lower right side of the display frame F, and is displayed in a form that is difficult for ordinary users to understand. Therefore, ordinary users mostly do not notice the lighting of the calibration execution light CL.

[0076] Thus, the display based on the battery state of the battery 40 is different before and after the calibration start time. In addition, the calibration execution lamp CL indicating that calibration has been executed is displayed in a form that is difficult for ordinary users to understand.

[0077] The battery status display device 100 of the embodiment displays the battery status of the storage battery 40 on the display unit 130 based on the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point before the calibration start time point, and displays the battery status of the storage battery 40 on the display unit 130 based on the ratio of the full charge capacity at the current time point to the full charge capacity at the calibration start time point after the calibration start time point. Therefore, the battery status of the storage battery 40 based on the calibration start time point is displayed, so that the discomfort caused to the user by the display of the battery status of the storage battery 40 can be reduced.

[0078] In particular, when the vehicle 10 equipped with the battery 40 is resold, for example, if calibration is not performed, the battery state of the battery 40 before the resale is inherited, and therefore it is difficult for the user who obtains the vehicle 10 through resale to recognize the deterioration of the battery 40 caused by his / her own use. In this regard, for example, by performing calibration at the time point of resale of the vehicle 10 equipped with the battery 40, it is possible to display the full charge capacity of the battery 40 at the time point of resale as 100%, and to display the deterioration ratio of the battery 40 based on this value. Therefore, the user who obtains the vehicle 10 through resale can easily recognize the deterioration of the battery 40 caused by his / her own use. In this case, the resale time point becomes the specified time point. In addition, by providing an execution switch 90A for executing calibration, it is possible to display the battery state of the battery 40, for example, from the time point desired by the user, and thus it is possible to perform a display corresponding to the user's wishes.

[0079] Furthermore, the battery status display device 100 of the embodiment displays the calibration execution light CL on the display unit 130 at a time point later than the calibration start time point. Therefore, it is possible to identify whether the display based on the battery status of the battery 40 displayed on the display unit 130 is a display before the calibration start time point or a display at a time point later than the calibration start time point. The calibration execution light CL is displayed in a form that is difficult for ordinary users to understand. Therefore, even in a case where, for example, the user performs an improper behavior of pretending that it is a time point before the calibration start time point even though it is a time point later than the calibration start time point and wants to sell the vehicle 10 to a used car dealer, the used car dealer can also see through the improper behavior.

[0080] In the above-mentioned embodiment, the full-charge capacity map 151 is used to obtain the full-charge capacity at the initial time point, the calibration start time point, and the current time point, but the full-charge capacity described above may also be obtained by other means. For example, the control unit 36 ​​may cause the battery state display device 100 to output the SOC of the battery 40, and the full-charge capacity of the battery 40 may be obtained based on the change of the SOC of the battery 40, or the full-charge capacity obtained by the full-charge capacity map 151 may be corrected based on the change of the SOC of the battery 40.

[0081] Alternatively, the relationship between the usage status of the batteries in a plurality of vehicles and the battery status of the batteries may be obtained, these relationships may be learned, and the battery status of the batteries may be obtained using the learning results. In this case, for example, the usage status of the vehicle 10 and the battery status of the batteries may be sent to an external server and the learning results provided by the external server may be used.

[0082] In addition, in the above-mentioned embodiment, after the calibration is started, the display control unit 120 does not display the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point as the battery state of the battery on the display unit 130, but it is also possible that even after the calibration is started, the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point can be displayed as the battery state of the battery on the display unit 130. In this case, for example, a reset switch can be provided for displaying the ratio of the full charge capacity at the current time point to the full charge capacity at the initial time point as the battery state of the battery on the display unit 130 even after the calibration is started. When the reset switch is operated, for example, the calibration execution information flag can be set to off so that the calibration execution light CL is not displayed.

[0083] In addition, in the above-mentioned embodiment, the full charge capacity at the current time point is displayed based on the ratio of the full charge capacity at the initial time point of the storage battery 40 and the full charge capacity at the calibration start time point, but the full charge capacity other than the full charge capacity at the current time point may be displayed. For example, the estimated value of the full charge capacity several years later may be displayed based on the ratio of the full charge capacity at the initial time point of the storage battery 40 and the full charge capacity at the calibration start time point.

[0084] The present invention has been described above using the embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious that those skilled in the art can apply various changes or improvements to the above embodiments. It is obvious from the description of the technical solution that such changes or improvements can also be included in the technical scope of the present invention.

[0085] Industrial Applicability

[0086] The battery status display device of the present invention comprises: an acquisition unit, which acquires the full charge capacity of a secondary battery mounted on a vehicle; a display unit, which displays an image; and a display control unit, which controls the display unit so that the display unit displays, at a time point before a specified time point, a ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and displays, at a time point after the specified time point, a ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point.

[0087] The battery status display device of the present invention is particularly useful in the case where it is possible to reduce the impression given to the user that the secondary battery has deteriorated.

[0088] Explanation of symbols:

[0089] 10…Vehicles

[0090] 12…Motor

[0091] 14…Drive wheel

[0092] 16…Brake system

[0093] 20…Vehicle Sensors

[0094] 40…Battery

[0095] 42…Battery sensor

[0096] 60…Display device

[0097] 70…Charging port

[0098] 72…Converter

[0099] 90…Steering switch

[0100] 90A...Execution switch

[0101] 90B…Switch

[0102] 91…Steering wheel

[0103] 92…Front windshield

[0104] 93…Dashboard

[0105] 94…first display device

[0106] 95…Second display device

[0107] 96…Driver’s seat

[0108] 97…Intra-disk area display

[0109] 100…Battery status display device

[0110] 110…Acquisition

[0111] 120…Display control unit

[0112] 130…Display unit

[0113] 150…Storage

[0114] 151…Full Charge Capacity Map

Claims

1. A battery status display device, wherein: The battery status display device comprises: an acquisition unit that acquires a fully charged capacity of a secondary battery mounted on the vehicle; A display unit that displays an image; and a display control unit that controls the display unit so that the display unit displays an image based on the ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at the initial time point of the secondary battery at a time point before the specified time point, and displays an image based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point at a time point after the specified time point, The display control unit controls the display of the image so that, at a time point after the execution switch is operated, a display is performed based on a ratio of the full charge capacity at the time point after the execution switch is operated to the full charge capacity at the time point when the execution switch is operated, The execution switch outputs calibration information in response to a pressing operation performed by a finger of a driver.

2. The battery status display device according to claim 1, wherein: The prescribed time point is a time point at which the vehicle is to be resold.

3. The battery status display device according to claim 1, wherein: The execution switch is arranged on the vehicle.

4. The battery status display device according to claim 1, wherein: The display control unit causes the display unit to display information indicating that a display based on a ratio of the full charge capacity to the full charge capacity at the predetermined time point is performed with the predetermined time point as a reference.

5. The battery status display device according to claim 4, wherein: The display control unit further causes the display unit to display the calibration information, the calibration information indicating whether an image based on the ratio of the full charge capacity to the full charge capacity at the predetermined time point is displayed based on the predetermined time point, When the display unit displays the calibration information, the calibration information is displayed smaller than the image created based on the ratio.

6. A method for displaying battery status, wherein: The computer performs the following processing: Obtaining the fully charged capacity of a secondary battery mounted on the vehicle; Controlling the display of an image so that, at a time point before a specified time point, a display is made based on the ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and at a time point after the specified time point, a display is made based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point; controlling display of an image so that, at a time point after an execution switch is operated, a display based on a ratio of the full charge capacity at the time point after the execution switch is operated to the full charge capacity at the time point when the execution switch is operated is performed, the execution switch outputting calibration information in response to a pressing operation performed by a finger of a driver; and The image is displayed.

7. A storage medium storing a program, wherein: The program causes the computer to perform the following processing: Obtaining the fully charged capacity of a secondary battery mounted on the vehicle; Controlling the display of an image so that, at a time point before a specified time point, a display is made based on the ratio of the full charge capacity at the time point before the specified time point to the full charge capacity at an initial time point of the secondary battery, and at a time point after the specified time point, a display is made based on the ratio of the full charge capacity at the time point after the specified time point to the full charge capacity at the specified time point; controlling display of an image so that, at a time point after an execution switch is operated, a display based on a ratio of the full charge capacity at the time point after the execution switch is operated to the full charge capacity at the time point when the execution switch is operated is performed, the execution switch outputting calibration information in response to a pressing operation performed by a finger of a driver; and The image is displayed.

Images