Determination device, determination method, and determination program

Abstract

To provide a determination device which can improve the accuracy of determining the degradation of a battery more than determining based on a rule, without generating the load of a preliminary preparation.SOLUTION: A determination device 20 includes: an acquisition unit 210 for acquiring information regarding the state of a battery including information of the voltage value of a battery 110 equipped in a vehicle 10; and a determination unit 220 for determining that the battery 110 is degraded on the basis of the information acquired by the acquisition unit 210 when the frequency of prohibiting control of a vehicle 10 by using the battery 110 exceeds a predetermined first threshold and the voltage of the battery 110 becomes lower than a predetermined second threshold value.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a determination device, a determination method, and a determination program.

Background Art

[0002] When the battery mounted on a vehicle deteriorates, starting failure of the vehicle or engine stall occurs. Therefore, a technique for determining whether the battery mounted on the vehicle is deteriorated has been disclosed. In Patent Document 1, a technique for calculating a voltage change of a battery voltage and determining battery deterioration based on the voltage change of the battery voltage and a predetermined determination value is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the battery voltage is also generated not only by battery deterioration but also by, for example, a decrease in SOC (State of Charge) or a decrease in temperature. Therefore, the battery deterioration cannot be correctly determined by a rule-based determination using only the battery voltage. On the other hand, when a physical model or artificial intelligence (AI) is used to improve the determination accuracy, a load for prior preparation such as determination of parameters occurs.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to provide a determination device, a determination method, and a determination program that improve the determination accuracy of battery deterioration as compared with rule-based determination without generating a load for prior preparation.

Means for Solving the Problems

[0006] The determination device according to the first aspect of the present invention includes an acquisition unit that acquires information regarding the state of the battery including information on the voltage value of the battery mounted on the vehicle, and based on the information acquired by the acquisition unit, when the frequency of prohibiting the control of the vehicle using the battery exceeds a predetermined first threshold value and the voltage of the battery falls below a predetermined second threshold value, a determination unit that determines that the battery is deteriorated.

[0007] According to the first aspect of the present invention, by using the frequency of prohibiting the control of the vehicle and the information on the voltage value, it is possible to improve the determination accuracy of the deterioration of the battery as compared with the rule-based determination without generating the load of prior preparation.

[0008] The determination device according to the second aspect of the present invention is the determination device according to the first aspect, wherein the determination unit determines whether the frequency of prohibiting the control of the vehicle using the battery exceeds the first threshold value based on whether the frequency of the voltage of the battery falling below a first voltage exceeds the first threshold value.

[0009] According to the second aspect of the present invention, it is possible to make a determination using the frequency of prohibiting the control of the vehicle using the frequency of the voltage of the battery falling below a first voltage.

[0010] The determination device according to the third aspect of the present invention is the determination device according to the second aspect, wherein the determination unit determines whether the voltage of the battery falls below the second threshold value based on whether the voltage falls below a second voltage lower than the first voltage.

[0011] According to the third aspect of the present invention, it is possible to determine whether the battery is deteriorated based on whether the voltage of the battery falls below a second voltage lower than the first voltage.

[0012] The determination device according to the fourth aspect of the present invention is the determination device according to the first aspect, wherein the determination unit determines whether the frequency of prohibiting the control of the vehicle using the battery exceeds the first threshold value based on whether the frequency of the flag for prohibiting the control of the vehicle using the battery being set exceeds the first threshold value.

[0013] According to the fourth aspect of the present invention, it is possible to perform determination using the frequency of prohibiting the control of the vehicle based on the frequency of the flag for prohibiting the control of the vehicle using the battery.

[0014] The determination device according to the fifth aspect of the present invention is the determination device according to any one of the first to fourth aspects, wherein the determination unit performs determination only when the temperature of the battery is a predetermined reference value.

[0015] According to the fifth aspect of the present invention, it is possible to avoid misjudgment due to changes in the voltage of the battery caused by temperature fluctuations.

[0016] The determination device according to the sixth aspect of the present invention is the determination device according to the fifth aspect, wherein when the temperature of the battery is not the reference value, the determination unit corrects the voltage to the voltage in the case of the reference value and then performs determination.

[0017] According to the sixth aspect of the present invention, it is possible to perform determination taking into account changes in the voltage of the battery caused by temperature fluctuations.

[0018] The determination device according to the seventh aspect of the present invention is the determination device according to any one of the first to fourth aspects, wherein the determination unit performs determination using the information when the battery has not been used for a predetermined time or more.

[0019] According to the seventh aspect of the present invention, it is possible to perform determination taking into account changes in the voltage of the battery caused by fluctuations in the concentration gradient inside the battery.

[0020] The determination device according to the eighth aspect of the present invention is the determination device according to any one of the first to fourth aspects, and further includes an output unit that outputs the result of the determination to the outside when the determination unit determines that the battery is deteriorated.

[0021] According to the eighth aspect of the present invention, it is possible to notify whether the battery of the vehicle is deteriorated.

[0022] The determination method according to the ninth aspect of the present invention is such that a processor acquires information on the state of the battery including information on the voltage value of the battery mounted on the vehicle, and based on the acquired information, the frequency of prohibiting the control of the vehicle using the battery exceeds a predetermined first threshold value, and when the voltage of the battery falls below a predetermined second threshold value, a process of determining that the battery is deteriorated is executed.

[0023] According to the ninth aspect of the present invention, by using the frequency of prohibiting the control of the vehicle and the information on the voltage value, it is possible to improve the determination accuracy of the deterioration of the battery compared with the rule-based determination without generating the load of prior preparation.

[0024] The determination program according to the tenth aspect of the present invention causes a computer to acquire information on the state of the battery including information on the voltage value of the battery mounted on the vehicle, and based on the acquired information, when the frequency of prohibiting the control of the vehicle using the battery exceeds a predetermined first threshold value, and the voltage of the battery falls below a predetermined second threshold value, a process of determining that the battery is deteriorated is executed.

[0025] According to the tenth aspect of the present invention, by using the frequency of prohibiting the control of the vehicle and the information on the voltage value, it is possible to improve the determination accuracy of the deterioration of the battery compared with the rule-based determination without generating the load of prior preparation.

Effects of the Invention

[0026] According to the present invention, it is possible to provide a determination device, a determination method, and a determination program that improve the determination accuracy of battery deterioration compared to rule-based determination without generating the load of prior preparation.

Brief Description of the Drawings

[0027]

Figure 1

Figure 2

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Figure 9

Embodiments for Carrying Out the Invention

[0028] Hereinafter, an example of an embodiment of the present disclosure will be described with reference to the drawings. In each drawing, the same or equivalent components and parts are given the same reference numerals. Also, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may be different from the actual ratios.

[0029] FIG. 1 is a diagram showing a schematic configuration of the determination system according to the present embodiment.

[0030] The determination system shown in FIG. 1 includes a vehicle 10 and a determination device 20. The vehicle 10 and the determination device 20 are communicably connected via a predetermined wireless network.

[0031] The vehicle 10 includes a battery 110 and a data transmission unit 120. Here, configurations unnecessary for the present embodiment are omitted. In the present embodiment, the battery 110 of the vehicle 10 is an auxiliary battery for operating the vehicle 10.

[0032] The determination device 20 is a device that determines whether the battery 110 of the vehicle 10 is deteriorated, and can be configured as, for example, a server.

[0033] FIG. 2 is a block diagram showing the hardware configuration of the determination device 20.

[0034] As shown in FIG. 2, the determination device 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 22, a RAM (Random Access Memory) 23, a storage 24, an input unit 25, a display unit 26, and a communication interface (I / F) 27. Each configuration is communicably connected to each other via a bus 29.

[0035] The CPU 21 is a central arithmetic processing unit that executes various programs and controls each unit. That is, the CPU 21 reads a program from the ROM 22 or the storage 24 and executes the program using the RAM 23 as a work area. The CPU 21 performs control of the above-described respective configurations and various arithmetic processes according to the programs recorded in the ROM 22 or the storage 24. In the present embodiment, a determination program for determining the deterioration of the battery 110 of the vehicle 10 is stored in the ROM 22 or the storage 24.

[0036] The ROM 22 stores various programs and various data. The RAM 23 temporarily stores programs or data as a working area. The storage 24 is composed of a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory, and stores various programs including an operating system and various data.

[0037] The input unit 25 includes a pointing device such as a mouse and a keyboard, and is used to perform various inputs.

[0038] The display unit 26 is, for example, a liquid crystal display, and displays various information. The display unit 26 may adopt a touch panel method and function as the input unit 25.

[0039] The communication interface 27 is an interface for communicating with other devices such as the vehicle 10. For example, standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark) are used.

[0040] When executing the above determination program, the determination device 20 realizes various functions by using the above hardware resources. Returning to FIG. 1, the functional configuration realized by the determination device 20 will be described.

[0041] As shown in FIG. 1, the determination device 20 has, as a functional configuration, an acquisition unit 210, a determination unit 220, and an output unit 230. Each functional configuration is realized by the CPU 21 reading and executing a determination program stored in the ROM 22 or the storage 24.

[0042] The acquisition unit 210 acquires information regarding the state of the battery 110, including information on the voltage value of the battery 110 mounted on the vehicle 10. The information regarding the state of the battery 110 is acquired by the battery information acquisition unit 111 provided in the battery 110. The information regarding the state of the battery 110 may include information on the temperature of the battery 110 in addition to the voltage value of the battery 110. The information regarding the state of the battery 110 is transmitted to the determination device 20 by the data transmission unit 120. The data transmission unit 120 transmits the information regarding the state of the battery 110 to the determination device 20 at a predetermined timing such as at the start of a trip of the vehicle 10 (the timing when the vehicle 10 starts) or when the vehicle 10 stops.

[0043] The determination unit 220 determines whether the battery 110 is deteriorated using the information regarding the state of the battery 110 acquired by the acquisition unit 210. The determination of the deterioration of the battery 110 by the determination unit 220 will be described.

[0044] As a method for determining the deterioration of the battery 110, there is a method of determining based on the battery voltage. However, the battery voltage decreases not only due to the deterioration of the battery but also due to the decrease in the SOC. FIG. 3 is a diagram showing an example of the relationship between the time at the time of deterioration of the battery and the state quantity (for example, voltage) of the battery, and FIG. 4 is a diagram showing an example of the relationship between the time at the time of decrease in the SOC of the battery and the state quantity (for example, voltage) of the battery. FIG. 5 is a diagram showing an example of the relationship between the SOC and the voltage of the battery.

[0045] When using a simple rule-based logic that determines that the battery is deteriorated when it falls below a predetermined threshold, there is a possibility that the battery may be determined to be deteriorated due to a decrease in the SOC of the battery even though the battery is not actually deteriorated.

[0046] In the case of battery degradation and in the case of a decrease in the state of charge (SOC) of the battery, as shown in FIGS. 3 and 4, the degree of decrease in the state quantity of the battery over time is different. Therefore, in order to distinguish between battery degradation and a decrease in the SOC of the battery, although it becomes easier to detect battery degradation when using a physical model or artificial intelligence (AI), there is a load for prior preparation such as determination of parameters.

[0047] That is, when using a simple rule-based logic, the load for determination is lower than when using a physical model or artificial intelligence, but the determination accuracy is inferior to that when using a physical model or artificial intelligence.

[0048] When the SOC of the battery 110 decreases, it may accelerate degradation or lead to a failure to start the vehicle 10 due to a voltage drop. Therefore, the SOC of the battery 110 during the running of the vehicle 10 is controlled to be maintained at a high level. On the other hand, there is control of the vehicle 10 that consumes the energy of the battery 110. In the following description, the control of the vehicle 10 that consumes the energy of the battery 110 is also simply referred to as vehicle control. For example, in the case of start-stop (S&S) control, when stopped such as waiting for a signal, the engine stops and the alternator stops, so the battery 110 is not charged, and when starting, the engine restarts, so the energy of the battery 110 is consumed at the time of starting. Therefore, when the vehicle 10 is under S&S control, in order to keep the SOC state of the battery 110 at a high level, the voltage level of the battery 110 is monitored to determine whether to execute S&S control. When S&S control is not executed, the alternator operates even when stopped, so the battery 110 is charged. As shown in FIG. 5, generally, there is a correlation between the voltage and the SOC of the battery.

[0049] FIG. 6 is a diagram for comparing and explaining the case where the battery 110 is in an initial state and the case where the degradation of the battery 110 has progressed.

[0050] When the battery 110 is in the initial state, even if the SOC and voltage of the battery 110 decrease due to the S&S control of the vehicle 10, once the voltage drops below a certain threshold, the S&S control is prohibited. Therefore, the battery 110 will be charged sooner or later, and the SOC and voltage of the battery 110 will recover.

[0051] On the other hand, when the battery 110 is in a state where deterioration has advanced (the final stage of deterioration), the voltage will not recover even if the battery 110 is charged. In other words, in the final stage of deterioration of the battery 110, the voltage cannot exceed the threshold regardless of the SOC state, and the S&S control will always be prohibited. Therefore, it becomes possible to detect the deterioration state of the battery 110 based on the voltage level or the frequency of S&S control of the vehicle.

[0052] FIG. 7 is a diagram showing an example of the relationship between the number of trips of the vehicle 10 and the number of times the S&S control is prohibited. When the battery 110 is in the initial state, the frequency of the S&S control being prohibited is low, for example, about once every 10 trips. After that, as the deterioration of the battery 110 gradually progresses, the frequency of the S&S control being prohibited increases, and in the final stage of deterioration of the battery 110, the S&S control is prohibited for each trip. That is, as the deterioration of the battery 110 progresses, the control prohibition frequency increases toward 1.

[0053] The determination unit 220 determines whether the battery 110 is deteriorated by utilizing the feature that the control prohibition frequency increases toward 1 as the deterioration of the battery 110 progresses in this way. Specifically, a voltage recovery threshold value at which the voltage of the battery 110 is expected to recover due to the stop of vehicle control and a deterioration determination threshold value for determining the deterioration of the battery 110 are set. Note that the voltage recovery threshold value is set to be equal to or higher than the deterioration determination threshold value.

[0054] The determination unit 220 calculates the frequency (control prohibition frequency) at which the voltage of the battery 110 becomes lower than the voltage recovery threshold value. In the final stage of deterioration of the battery 110, since the control prohibition frequency approaches 1, the determination unit 220 turns on (sets) the voltage recovery failure flag at the timing when the control prohibition frequency exceeds a predetermined first threshold value (for example, 0.5).

[0055] Further, when the voltage of the battery 110 is less than the deterioration determination threshold value, the determination unit 220 turns on the voltage drop flag. The deterioration determination threshold value is an example of the second threshold value of the present invention.

[0056] When both the voltage recovery impossible flag and the voltage drop flag are ON, the determination unit 220 determines that the battery 110 has deteriorated.

[0057] FIG. 8 is a diagram showing an example of the relationship between the number of trips of the vehicle 10, the voltage of the battery 110, and the control prohibition frequency of the vehicle 10. Here, the control prohibition frequency of the vehicle 10 is the frequency at which a control prohibition determination has been made in a recent predetermined number of times (for example, 10 times).

[0058] In the example of FIG. 8, when the number of trips reaches t1 and the voltage of the battery 110 drops below the voltage recovery threshold value, the control prohibition frequency of the vehicle 10 increases. However, when the number of trips reaches t2 and the voltage of the battery 110 exceeds the voltage recovery threshold value, the control prohibition frequency of the vehicle 10 decreases again.

[0059] After that, when the number of trips reaches t3 and the voltage of the battery 110 drops below the voltage recovery threshold value, the control prohibition frequency of the vehicle 10 increases. When the control prohibition frequency further exceeds a predetermined first threshold value (for example, 0.5), the determination unit 220 turns on the voltage recovery impossible flag. After that, when the voltage of the battery 110 further drops below the deterioration determination threshold value, the determination unit 220 turns on the voltage drop flag. Even when the number of trips reaches t4 and the voltage of the battery 110 exceeds the voltage recovery threshold value, the determination unit 220 determines that this battery 110 has deteriorated.

[0060] By determining the deterioration of the battery 110 based on the frequency at which the voltage of the battery 110 becomes less than the voltage recovery threshold value and whether the voltage of the battery 110 becomes less than the deterioration determination threshold value in this way, the determination unit 220 can determine that the battery 110 has deteriorated with high accuracy without requiring prior man-hours for conformity and compared to rule-based logic.

[0061] Instead of determining whether the voltage has fallen below the voltage recovery threshold value for calculating the control prohibition frequency, the determination unit 220 may use information on the prohibition flag of the actual vehicle control in the vehicle 10. Further, for calculating the control prohibition frequency, the determination unit 220 may use information on the temperature of the battery 110, as well as information on the charge amount and discharge amount of the battery 110, in addition to the information on the voltage of the battery 110. When using the information on the temperature of the battery 110, the determination unit 220 can avoid misjudgment due to changes in the battery voltage caused by fluctuations in the temperature of the battery 110, exclude the influence of voltage drop due to temperature decrease, and consider the voltage drop due to charging and discharging. For example, the determination unit 220 may use the information on the charge amount and discharge amount when the temperature of the battery 110 is within the range of the reference value. Also, for example, when the temperature of the battery 110 is not within the range of the reference value, the determination unit 220 may not perform the determination, and may correct the voltage value, charge amount, and discharge amount within the range of the reference value and use the information on the voltage value, charge amount, and discharge amount. Note that when making the correction, the determination unit 220 may use a table in which the relationship between the temperature and the voltage value, charge amount, and discharge amount is defined.

[0062] Further, the determination unit 220 may use the voltage value of the battery 110 after being left unattended for a long time, such as after parking for a predetermined time or more. By using the voltage value of the battery 110 after being left unattended for a long time, it becomes possible to make a determination that excludes the influence of voltage changes due to the internal temperature or concentration gradient of the battery 110.

[0063] The output unit 230 outputs the determination result by the determination unit 220 to the outside. The output unit 230 transmits the determination result by the determination unit 220 to, for example, the manufacturer of the vehicle 10, the dealership or dealer that sold the vehicle 10, the user of the vehicle 10, and the like.

[0064] Next, the operation of the determination device 20 will be described.

[0065] FIG. 9 is a flowchart showing the flow of the determination process by the determination device 20. The determination process is performed by the CPU 21 reading a position confirmation program from the ROM 22 or the storage 24, expanding it in the RAM 23, and executing it.

[0066] In step S101, the CPU 21 acquires the voltage value of the battery 110 for each vehicle 10.

[0067] Subsequent to step S101, in step S102, the CPU 21 calculates the control prohibition frequency of the vehicle 10. For example, the CPU 21 calculates, as the control prohibition frequency, the frequency at which the voltage of the battery 110 in the most recent 10 trips is less than the voltage recovery threshold. The CPU 21 may also calculate the control prohibition frequency by, for example, averaging a value that is 1 when the voltage of the battery 110 is less than the voltage recovery threshold and 0 otherwise.

[0068] Subsequent to step S102, in step S103, the CPU 21 determines whether the control prohibition frequency exceeds a predetermined threshold C1.

[0069] As a result of the determination in step S103, if the control prohibition frequency exceeds the predetermined threshold C1 (step S103; Yes), the CPU 21 turns on the voltage recovery impossible flag in step S104. On the other hand, as a result of the determination in step S103, if the control prohibition frequency is less than or equal to the predetermined threshold C1 (step S103; No), the CPU 21 turns off the voltage recovery impossible flag in step S105.

[0070] Subsequent to step S104 or step S105, in step S106, the CPU 21 determines whether the voltage of the battery 110 is less than the deterioration determination threshold.

[0071] As a result of the determination in step S106, if the voltage of the battery 110 is less than the deterioration determination threshold (step S106; Yes), the CPU 21 turns on the voltage drop flag in step S107. On the other hand, as a result of the determination in step S106, if the voltage of the battery 110 is greater than or equal to the deterioration determination threshold (step S107; No), the CPU 21 turns off the voltage drop flag in step S108.

[0072] Subsequent to step S107 or step S108, the CPU 21 determines in step S109 whether both the voltage recovery impossible flag and the voltage drop flag are ON.

[0073] As a result of the determination in step S109, if both the voltage recovery impossible flag and the voltage drop flag are ON (step S109; Yes), the CPU 21 determines in step S110 that the battery 110 is deteriorated. On the other hand, as a result of the determination in step S109, if at least one of the voltage recovery impossible flag or the voltage drop flag is OFF (step S109; No), the CPU 21 determines that the battery 110 is not deteriorated and returns to the process of step S101.

[0074] The CPU 21 executes a series of processes at a predetermined timing, such as once a day.

[0075] Through a series of processes, the CPU 21 can determine that the battery 110 has deteriorated with high accuracy without requiring prior man-hours for adaptation and compared to rule-based logic.

[0076] Note that, in each of the above embodiments, the determination process executed by the CPU by reading software (program) may be executed by various processors other than the CPU. Examples of the processor in this case include a PLD (Programmable Logic Device) whose circuit configuration can be changed after manufacture, such as an FPGA (Field-Programmable Gate Array), and a dedicated electric circuit which is a processor having a circuit configuration specifically designed to execute specific processing, such as an ASIC (Application Specific Integrated Circuit). Further, the position confirmation process may be executed by one of these various processors, or may be executed by a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs, and a combination of a CPU and an FPGA, etc.). Further, the hardware structure of these various processors is, more specifically, an electric circuit combining circuit elements such as semiconductor elements.

[0077] Further, in each of the above embodiments, the mode in which the program for the determination process is pre-stored (installed) in the ROM or the storage has been described, but the present invention is not limited to this. The program may be provided in a form recorded on a non-transitory recording medium such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory), and a USB (Universal Serial Bus) memory. Further, the program may be in a form downloaded from an external device via a network.

Explanation of Signs

[0078] 10 Vehicle 110 Battery 111 Battery information acquisition unit 120 Data transmission unit 20 Determination device 210 Acquisition unit 220 Determination unit 230 Output unit

Claims

1. An acquisition unit that acquires information on the voltage value of a battery mounted on a vehicle; A determination unit that determines that the battery is deteriorated when the frequency of prohibiting control of the vehicle that consumes energy of the battery exceeds a predetermined first threshold based on the information acquired by the acquisition unit and the voltage of the battery falls below a predetermined second threshold; comprising; The determination unit is a determination device that determines whether the frequency of prohibiting control of the vehicle that consumes energy of the battery exceeds the first threshold based on whether the frequency of the voltage of the battery falling below a first voltage exceeds the first threshold.

2. The determination unit according to claim 1, wherein the determination unit determines whether the voltage of the battery falls below the second threshold based on whether the voltage falls below a second voltage lower than the first voltage.

3. The determination unit according to claim 1, wherein the determination unit determines whether the frequency of prohibiting control of the vehicle that consumes energy of the battery exceeds the first threshold based on whether the frequency of a flag for prohibiting control of the vehicle that consumes energy of the battery being set exceeds the first threshold.

4. The determination device according to any one of claims 1 to 3, wherein the determination unit makes a determination only when the temperature of the battery is within a predetermined reference value range.

5. The determination device according to claim 4, wherein when the temperature of the battery is not within the reference value range, the determination unit corrects the voltage in the case of the reference value range and makes a determination.

6. The determination device according to any one of claims 1 to 3, wherein the determination unit makes a determination using the information when the battery has not been used for a predetermined time or more.

7. The determination device according to any one of claims 1 to 3, further comprising an output unit that outputs the result of the determination to the outside when the determination unit determines that the battery is deteriorated.

8. A processor; acquires information on the voltage value of a battery mounted on a vehicle; Based on the acquired information, when the frequency of prohibiting control of the vehicle that consumes energy of the battery exceeds a predetermined first threshold and the voltage of the battery falls below a predetermined second threshold, it is determined that the battery is deteriorated. Determine whether the frequency of prohibiting the control of the vehicle that consumes the energy of the battery exceeds the first threshold based on whether the frequency of the voltage of the battery falling below the first voltage exceeds the first threshold. A determination method for executing processing.

9. To a computer, acquire information on the voltage value of a battery mounted on a vehicle, based on the acquired information, when the frequency of prohibiting the control of the vehicle that consumes the energy of the battery exceeds a predetermined first threshold and the voltage of the battery falls below a predetermined second threshold, determine that the battery is deteriorated, Determine whether the frequency of prohibiting the control of the vehicle that consumes the energy of the battery exceeds the first threshold based on whether the frequency of the voltage of the battery falling below the first voltage exceeds the first threshold. A determination program for causing the processing to be executed.

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