Vehicle battery monitoring device, program, and vehicle battery monitoring method

Abstract

To provide a battery monitoring device for a vehicle capable of monitoring regardless of a vehicle type and immediately coping with a failure.SOLUTION: The vehicular battery monitoring device for monitoring a battery mounted on a stopped vehicle includes a temperature sensor for measuring the battery from the outside of the vehicle.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle battery monitoring device, a program, and a vehicle battery monitoring method. It is related to. [Background technology]

[0002] Lithium-ion batteries installed in electric vehicles can ignite due to abnormal temperature rises caused by various factors such as temperature, deterioration, and malfunction. For this reason, in places where vehicles are parked closely together, such as on transport ships or in parking lots, if one vehicle ignites, it can spread to neighboring vehicles, causing a major accident.

[0003] For this reason, Patent Document 1 discloses a vehicle monitoring device that monitors the temperature of the battery using a temperature sensor mounted on each vehicle.

[0004] However, the vehicle monitoring device described in Patent Document 1 cannot monitor the batteries of vehicles that are not equipped with a temperature sensor. Also, even if the temperature sensor breaks down during transportation, it cannot be repaired without the driver's permission. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2024-55579 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, the main object of the present invention is to provide a vehicle battery monitoring device that can monitor any vehicle type and can respond immediately to any malfunction. [Means for solving the problem]

[0007] The vehicle battery monitoring device of the present invention is a vehicle battery monitoring device that monitors a battery installed in a parked vehicle, and is characterized by having a temperature sensor that measures the battery from outside the vehicle.

[0008] According to the present invention, since the temperature sensor is provided outside the vehicle, monitoring can be performed regardless of the vehicle type, and repairs can be performed without making any modifications to the vehicle, so that breakdowns can be dealt with immediately.

[0009] In the present invention, the term "vehicle" refers to the entire vehicle including the tires and the body, and the term "car body" refers to the body only. In other words, the term "car body" does not include the tires.

[0010] However, because the battery is heavy, it is installed at the bottom of the vehicle to stabilize the center of gravity. Therefore, if you try to monitor the battery from above, the interior space of the vehicle will get in the way and it will be difficult to accurately grasp the temperature change of the battery.

[0011] Therefore, the temperature sensor may measure the temperature from below the vehicle body. With this configuration, the temperature change of the battery can be accurately detected.

[0012] Furthermore, providing a temperature sensor for each device increases costs and the risk of malfunctions.

[0013] Therefore, a moving device for moving the temperature sensor may be further provided. With this configuration, one temperature sensor can monitor the batteries of multiple vehicles, reducing the number of temperature sensors, thereby reducing costs and malfunctions. Furthermore, even if the parking location changes, for example, the movement route can be easily reconfigured to accommodate this.

[0014] A specific embodiment of the moving device is a self-propelled robot that is equipped with the temperature sensor and passes under the vehicle body.

[0015] Another specific embodiment of the moving device is one in which the moving device has a guide that runs around the underside of the vehicle body, and the temperature sensor is moved along the guide so as to pass through the underside of the vehicle body.

[0016] On the other hand, if the temperature sensor is moved, it may not be possible to simultaneously monitor the batteries of multiple vehicles, and temperature changes may not be immediately detected. Therefore, the temperature sensor may be installed in each vehicle.

[0017] In this case, it is preferable that the vehicle further includes a holding member that is installed under the vehicle body and that holds the temperature sensor.

[0018] When a temperature sensor is provided for each vehicle, there is a risk that the sensor may be forgotten to be installed. Therefore, the holding member may be a vehicle fixing device that fixes the vehicle so that it does not move from the parked position.

[0019] With this configuration, when the vehicle is fixed with the vehicle fixture, the temperature sensor is also installed, preventing forgetting to install it. Furthermore, the vehicle fixture is usually installed between the vehicle body and the floor, so it is installed on the underside of the vehicle body. Therefore, when the vehicle is fixed with the vehicle fixture, the temperature sensor is automatically installed on the underside of the vehicle body, where it is easier to accurately measure changes in battery temperature.

[0020] The vehicle fixing device requires a lot of work to install. Therefore, the holding member may be a long member that is passed under each of the vehicles parked side by side, and the temperature sensor may be held in plurality along the longitudinal direction of the holding member.

[0021] With this configuration, the temperature sensors can be installed on multiple vehicles at once by passing the elongated holding member under the multiple vehicles, thereby reducing the effort required for installation.

[0022] In a specific embodiment of the holding member, the holding member may be in the form of a sheet that can be wound into a roll. With such a configuration, the holding member does not take up much space when not in use and is easy to transport.

[0023] The apparatus may further include a pull-out device that pulls out the holding member wound in a roll and passes it under the plurality of vehicle bodies. With this configuration, the holding member can be installed automatically.

[0024] The pulling-out device may be a self-propelled robot that travels on caterpillar tracks. With this configuration, even if there is a step or a hole in the floor surface, it can easily overcome the step or hole.

[0025] If an abnormality is detected in the battery temperature change, it is necessary to immediately notify the operator.

[0026] Therefore, the temperature sensor may measure the temperature or temperature change rate of the battery, and the device may further include a judgment unit having at least one of a first judgment unit that judges whether the battery is in a dangerous state based on the measurement values ​​of multiple vehicles measured by the temperature sensor, or a second judgment unit that compares the measurement values ​​measured by the temperature sensor with a predetermined threshold and judges whether the battery is in a dangerous state, and an alarm unit that issues an alarm when the judgment unit judges that the battery is in a dangerous state.

[0027] The first and second judgment units each have their advantages and disadvantages. The first judgment unit may make a false judgment if, for example, a local temperature change occurs, but it can detect abnormal temperature changes at the symptom stage, making it easier to take preventative measures. On the other hand, the second judgment unit can accurately judge regardless of temperature changes if the threshold is set to a high value. However, in this case, it can only detect abnormal temperature changes immediately before ignition, making it difficult to take preventative measures.

[0028] Therefore, the determination unit may be configured to include the first determination unit and the second determination unit. With this configuration, the first determination unit and the second determination unit can make determinations by complementing each other, making it easier to take action before ignition occurs.

[0029] The program of the present invention is a program used in a vehicle battery monitoring device that monitors a battery installed in a parked vehicle, wherein the vehicle battery monitoring device is equipped with a temperature sensor that measures the temperature or temperature change rate of the battery from outside the vehicle, and is characterized in that the vehicle battery monitoring device is caused to function as a judgment unit that has at least one of a first judgment unit that determines whether the battery is in a dangerous state based on measurement values ​​of multiple vehicles measured by the temperature sensor, or a second judgment unit that compares the measurement value measured by the temperature sensor with a predetermined threshold and determines whether the battery is in a dangerous state, and an alarm unit that issues an alarm when the judgment unit determines that the battery is in a dangerous state.

[0030] A vehicle battery monitoring method according to the present invention is a method for monitoring a vehicle battery mounted on a parked vehicle, which is characterized in that a temperature sensor for measuring the battery from outside the vehicle is moved to periodically measure the batteries of a plurality of vehicles. In this case, the temperature sensor may be moved so as to pass through the underside of the vehicle body of the vehicle. [Effects of the Invention]

[0031] According to the present invention configured in this way, monitoring can be performed regardless of the type of vehicle, and failures can be dealt with immediately. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a perspective view schematically showing a vehicle battery monitoring device according to a first embodiment; [Figure 2] FIG. 2 is a side view schematically showing the self-propelled robot of the first embodiment passing through the underside of the vehicle body. [Figure 3]FIG. 2 is a block diagram showing a control unit of the first embodiment. [Figure 4] 3 is a plan view showing a movement route of a temperature sensor by the movement device of the first embodiment. FIG. [Figure 5] FIG. 10 is a perspective view schematically showing a modified example of the moving device of the first embodiment. [Figure 6] 3 is a plan view showing a movement route of a temperature sensor by the movement device of the first embodiment. FIG. [Figure 7] FIG. 4 is a perspective view schematically showing a vehicle battery monitoring device according to a second embodiment. [Figure 8] FIG. 6 is a side view schematically showing a state in which a vehicle battery monitoring device according to a second embodiment is used. [Figure 9] FIG. 10 is a perspective view schematically showing a vehicle battery monitoring device according to a third embodiment. [Figure 10] FIG. 10 is a perspective view schematically showing a state in which a vehicle battery monitoring device according to a third embodiment is used. [Figure 11] FIG. 10 is a plan view schematically showing a state in which a vehicle battery monitoring device according to a third embodiment is used. [Figure 12] FIG. 10 is a block diagram showing a control unit of a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0033] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle battery monitoring device according to the present invention will be described below with reference to the drawings.

[0034] The vehicle battery monitoring device according to the present invention monitors the temperature of the battery of a parked vehicle from outside the vehicle, and is used, for example, in places where the vehicle is parked, such as a vehicle transport ship or a parking lot of a commercial facility.

[0035] 1, a vehicle battery monitoring device 100 according to this embodiment includes a temperature sensor 10, a moving device 20 that carries and moves the temperature sensor 10, and a control unit C. Note that this vehicle battery monitoring device 100 is separate from the vehicle X.

[0036] The temperature sensor 10 measures the temperature of a battery B mounted on a vehicle X. In this embodiment, the temperature change rate is measured based on the temperature distribution of the battery B, but the present invention is not limited to this and the temperature may be measured as a numerical value. Specifically, the temperature sensor 10 is a non-contact type, and for example, an infrared camera or a radiation temperature sensor is used.

[0037] The moving device 20 is a device that carries and moves the temperature sensor 10, and in this embodiment is a self-propelled robot 20 that travels on the floor surface F on which the vehicle X is parked. The temperature sensor 10 is mounted on this self-propelled robot 20.

[0038] As shown in Fig. 2, self-propelled robot 20 moves using drive mechanism 21. The height of self-propelled robot 20 is set lower than the height from floor F to vehicle body X1. This allows self-propelled robot 20 to pass under vehicle body X1, and temperature sensor 10 measures battery B from below as it passes under. Therefore, temperature sensor 10 is mounted with its measurement area facing upward.

[0039] The control unit C includes a CPU, memory, input means, etc., and in this embodiment, is mounted on the self-propelled robot 20. Based on a program stored in the memory, the control unit C performs at least the functions of a movement route setting unit C1, a drive mechanism control unit C2, a measurement value storage unit C3, a first determination unit C4, a threshold value storage unit C5, a second determination unit C6, and a notification unit C7, as shown in FIG. Below, the operation of the control unit C will be explained together with an explanation of each unit.

[0040] The movement route setting unit C1 sets a movement route R from the movement start position of self-propelled robot 20. This movement route R is set, for example, by an operator based on the stopping positions of each vehicle X and input via input means. Specifically, as shown in FIG. 4, for example, a route is set in which self-propelled robot 20 periodically passes under the body X1 of each vehicle X (under the battery B). More specifically, a route in which self-propelled robot 20 circles or travels back and forth under the body X1 of each vehicle X may be set.

[0041] If the patterns of the stopping positions of the vehicle X are predetermined, the movement route R corresponding to each pattern may be stored in advance in a predetermined area of ​​the memory, and the movement route R may be selectively set from among them.

[0042] The drive mechanism control unit C2 controls drive mechanism 21, which is mounted on self-propelled robot 20 and is composed of a motor, tires, etc., to cause self-propelled robot 20 to travel along a preset movement route R. As a result, self-propelled robot 20 periodically passes under body X1 of each vehicle X.

[0043] The measurement value storage unit C3 is provided in a predetermined area of ​​the memory, and stores the measurement values ​​measured by the temperature sensor 10. In this embodiment, the measurement values ​​are stored for each vehicle X.

[0044] The first determination unit C4 determines whether or not the battery B is in a dangerous state based on the measurement values ​​of a plurality of vehicles X measured by the temperature sensor 10. In this embodiment, a first threshold value is set based on the measurement values ​​of other vehicles X stored in advance in the measurement value storage unit C3, and the measurement values ​​measured by the temperature sensor 10 are compared with the first threshold value to determine whether or not the battery B is in a dangerous state.

[0045] This first threshold value is set based on multiple measurements of another vehicle X taken before the measurement of the measurement value to be judged. More preferably, it is set based on multiple measurements of another vehicle X taken immediately before. For example, it is set to a value greater than the average value of these measurements. This allows a determination to be made as to whether the measurement value to be judged shows an abnormal temperature change compared to the measurement value of another vehicle X, that is, whether any signs of fire are present.

[0046] Battery B shows a gradual temperature rise, then a sudden temperature rise just before ignition, and then ignites. Therefore, a threshold value storage unit C5 provided in a predetermined area of ​​memory stores a second threshold value that is smaller than the temperature after the sudden temperature rise and the temperature change rate associated with that temperature rise, which are obtained in advance through experiments, etc. It is preferable that the second threshold value be a value larger than the first threshold value. This second threshold value corresponds to the threshold value in the claims.

[0047] The second determination unit C6 compares the measurement value measured by the temperature sensor 10 with a second threshold value, and determines that a dangerous state exists when the measurement value is greater than the second threshold value.

[0048] When the first determination unit C4 and the second determination unit C6 determine a dangerous state, the notification unit C7 controls the notification mechanism 30 mounted on the moving device 20 to notify the worker. This notification mechanism 30 notifies the worker using, for example, light, sound, or vibration, and in this embodiment, is a light-emitting element. Note that the notification manner may be different between the first determination unit C4 and the second determination unit C6. In this case, since the second determination unit C6 is more dangerous, for example, the notification by the second determination unit C6 uses stronger light, sound, and vibration.

[0049] According to the vehicle battery monitoring device 100 of this embodiment, the battery B is monitored by the temperature sensor 10 mounted on the self-propelled robot 20 that is separate from the vehicle X, so monitoring is possible regardless of the vehicle type, and repairs can be made without making any changes to the vehicle X, so that breakdowns can be dealt with immediately.

[0050] Furthermore, since the temperature sensor 10 measures the temperature of the battery B from below the vehicle body X1, the temperature value and the rate of temperature change of the battery B can be accurately determined.

[0051] Furthermore, since the first determination unit C4 is provided in addition to the second determination unit C6, it is possible to determine not only whether or not the battery B is in a truly dangerous state, but also whether or not symptoms of such a state are present. As a result, it becomes easier to take preventative measures, such as individually monitoring batteries that show symptoms.

[0052] <Modification> This modification is a modification of the moving device 20 according to the first embodiment. As shown in Fig. 5, the moving device 40 of this modification includes a guide G that runs around the underside of the body X1 of the vehicle X, and moves the temperature sensor 10 along the guide G so that it passes under the body X1. In this case, the moving route of the temperature sensor 10 is determined by the guide G, so there is no need for a moving route setting unit C1 or a moving control unit C2.

[0053] More specifically, the moving device 40 comprises a pair of rotating rollers 41, a wire 42 that is stretched across these rotating rollers 41 and serves as a guide G, and a fixed base 43 that is fixed to the wire 42, and the temperature sensor 10 is mounted on this fixed base 43.

[0054] 6, the wire 43 is stretched so as to pass under the body X1 of each vehicle X. As a result, when the moving device 20 is operated, the wire 43 runs in conjunction with the rotation of the rotating roller 41, and the temperature sensor 10 moves back and forth.

[0055] Although the moving device 40 according to this modification requires more time and effort to install than the moving device 20 according to the first embodiment, it can monitor the battery B in the same manner.

[0056] Second Embodiment The vehicle battery monitoring device 100 according to this embodiment does not include a moving device, unlike the vehicle battery monitoring device 100 according to the first embodiment. Specifically, as shown in Fig. 7, this vehicle battery monitoring device 100 includes a temperature sensor 10 and a holding member 50. Note that the temperature sensor 10 is the same as that in the first embodiment, and therefore a description thereof will be omitted.

[0057] The holding member 50 is installed under the vehicle body X1 to hold the temperature sensor 10, and in this embodiment is a vehicle fixing device that fixes the vehicle X so that it does not move from its parked position. More specifically, it is a wedge-shaped tire stopper that is inserted between the tire T and the floor surface F from the front-rear direction.

[0058] The vehicle fixing device 50 according to this embodiment further includes a transmitter 51 that transmits the measurement value measured by the temperature sensor 10 to the control unit C. This transmitter 51 is connected wirelessly or by wire to the control unit C provided in a mobile terminal M that is separate from the vehicle fixing device 50, and transmits the measurement value to the control unit C. If the notification unit C5 determines that there is a danger, it notifies the worker via the mobile terminal M. The mobile terminal M is specifically a smartphone, a tablet, or the like, and notifies the worker by sound or vibration, for example.

[0059] The vehicle fixing device 50 is not limited to a wedge-shaped tire stopper, but may be, for example, a traction belt stretched between the floor F and the vehicle X or its tire T.

[0060] For example, on a transport ship, a vehicle fixing device 50 is used for each vehicle X to prevent movement due to rocking. Therefore, with the vehicle battery monitoring device 100 according to this embodiment, the temperature sensor 10 can be installed simply by fixing the vehicle X as in the conventional case, preventing forgetting to install the sensor. Furthermore, since a temperature sensor 10 is installed for each vehicle X, temperature changes in multiple batteries B can be monitored simultaneously without being overlooked.

[0061] Furthermore, since the vehicle fixture 20 is generally installed under the vehicle body X1, the temperature sensor 10 is also necessarily installed under the vehicle body X1, which makes it easier to accurately grasp the temperature change of the battery B.

[0062] 9 and 11, a vehicle battery monitoring device 100 according to this embodiment includes a temperature sensor 10, a holding member 50, a holding member container 60, a pull-out device 70, a winding device 80, and a control unit C. Note that the temperature sensor 10 is the same as that in the first embodiment, and therefore description thereof will be omitted.

[0063] The holding member 50 holds the temperature sensor 10, and in this embodiment, is a long member that is passed under each of the vehicles X that are parked and lined up in a straight line. More specifically, it is a sheet-like member that can be wound up into a roll. However, it is not limited to a sheet-like member, and may be, for example, a string-like member.

[0064] The holding member 50 is installed on the floor surface on which a plurality of vehicles X are parked side by side, passing under the plurality of vehicles in the line-up direction. Therefore, when installed on the floor surface, the holding member 50 has opposing regions facing the vehicle body X1 and non-facing regions located between the vehicles and not facing the vehicle body X1, which are arranged alternately.

[0065] In this embodiment, the holding member 50 is installed in a state in which it passes under the left-right direction (width direction) of a plurality of vehicles X parked side by side. Specifically, it is passed between the front and rear tires of the vehicle X. Therefore, the width of the holding member 50 is set shorter than the length of the wheelbase of the vehicle X (between the front and rear tires T).

[0066] This holding member 50 holds a plurality of temperature sensors 10 along the longitudinal direction. Specifically, they are held at equal intervals in the longitudinal direction. In this embodiment, a plurality of temperature sensors 10 arranged in the width direction of the holding member 50 are treated as one unit, and this unit is held at equal intervals in the longitudinal direction. Therefore, each temperature sensor 10 is held aligned in both the longitudinal and width directions.

[0067] The holding member container 60 is a box-like container that contains the holding member 50, and stores the rolled holding member 50 so that it can be pulled out and wound up. The holding member container 60 is installed so that a plurality of vehicles X are lined up in a straight line in the direction in which the holding member 50 is pulled out. In other words, when a plurality of vehicles X are parked aligned front to back and left to right, the holding member container 60 is installed in a row or a column.

[0068] The holding member container 60 includes a pull-out length measuring device 61 that measures the pull-out length of the holding member 50, and a winding mechanism 62 that winds up and stores the pulled-out holding member 50.

[0069] The pull-out device 70 pulls out the holding member 50 housed in the holding member container 60 and passes it under a plurality of vehicle bodies X. In this embodiment, the pull-out device 70 is a self-propelled robot 70. The self-propelled robot 70 includes a drive mechanism 71, a holding mechanism 72, and a vehicle detection sensor 73.

[0070] The drive mechanism 71 is configured by, for example, a motor, caterpillar tracks, etc. However, it is not limited to caterpillar tracks, and may be one having, for example, tires.

[0071] The holding mechanism 72 holds the holding member 50, and may be configured to hold the holding member 50 by magnetically attracting a magnetic body provided at the tip of the holding member 50 with an electromagnet, for example.

[0072] The vehicle detection sensor 73 detects vehicles X that self-propelled robot 70 has passed through. More specifically, it detects the number of vehicles X that self-propelled robot 70 has passed through as it moves from the pull-out start position to the pull-out end position. For example, it detects vehicles X by utilizing the reflection of radio waves emitted upward.

[0073] The self-propelled robot according to this embodiment is configured to use infrared rays emitted from, for example, an infrared emitting device (not shown) provided in the holding member container 60 as guide light, and to move linearly under the multiple vehicles X in the direction of their arrangement, following this guide light.

[0074] The control unit C includes a CPU, a memory, an input means, etc., and in this embodiment, is mounted on the holding member container 60. Based on a program stored in the memory, the control unit C at least functions as a drive mechanism control unit C2, a first determination unit C4, a threshold value storage unit C5, a second determination unit C6, a map creation unit C8, and a notification unit C7, as shown in Fig. 12 .

[0075] The drive mechanism control unit C2 controls the drive mechanism 71 of the self-propelled robot 70 to move the self-propelled robot 70 in the direction of the line-up so that it passes under the lined-up vehicles X. As a result, the self-propelled robot 70 passes under each vehicle X while pulling out the holding member 50 from the holding member container 60, and installs the temperature sensor 10 under each vehicle X that it has passed through.

[0076] The first determination unit C4 determines whether or not the battery B is in a dangerous state based on the measurement values ​​measured by the temperature sensors 10. In this embodiment, the measurement values ​​of the temperature sensors 10 held in the same holding member 50 are compared, and the battery B monitored by the temperature sensor 10 that shows an abnormal temperature change (temperature rise) is determined to be in a dangerous state.

[0077] As mentioned above, battery B shows a gradual temperature rise, then a sudden temperature rise just before ignition, and then ignites. Therefore, a threshold value storage unit C5 provided in a predetermined area of ​​memory stores a second threshold value that is smaller than the temperature after the sudden temperature rise and the temperature change rate associated with the temperature rise, which are obtained in advance through experiments, etc. This second threshold value is preferably larger than the first threshold value. Note that this second threshold value corresponds to the threshold value in the claims.

[0078] The second determination unit C6 compares the measured value measured by each temperature sensor 10 with a second threshold value, and determines that a dangerous state exists when the measured value is greater than the second threshold value.

[0079] The map creation unit C8 creates information showing the correspondence between each temperature sensor 10 of the holding member 50 pulled out by the self-propelled robot 70 and each vehicle X. In other words, it creates information that shows which temperature sensor 10 is located under which vehicle X. Specifically, for example, it measures in advance the stopping information of multiple vehicles X parked side by side, such as the width, overall length, and inter-vehicle distance, and creates map information showing the positional relationship between each temperature sensor 10 and each vehicle X based on this stopping information, the number of vehicles X detected by the vehicle detection sensor 73, and the pulled-out length measured by the pulled-out length measuring device 61.

[0080] When the first determination unit C4 and the second determination unit C6 determine that a dangerous state exists, the notification unit C7 notifies the operator of which vehicle the dangerous state exists. Specifically, the notification unit C7 displays map information on the display of the mobile terminal carried by the operator, and displays the vehicle X determined to be in a dangerous state on the map.

[0081] According to this embodiment, the temperature sensors 10 can be installed simultaneously on multiple vehicles X by passing the long holding member 50 under the multiple vehicles X. As a result, the labor required for installation can be reduced. In addition, the holding member 50 can be wound up in a roll, making it compact when not installed.

[0082] Other Embodiments The vehicle battery monitoring device according to the present invention is not limited to the above-described embodiments. In the self-propelled robot according to the first embodiment, the travel route setting unit sets the route input by the operator as the travel route, but is not limited to this. For example, the self-propelled robot may be equipped with a gyro sensor, an infrared sensor, or the like, and configured to automatically set the travel route based on these sensors.

[0083] Furthermore, the self-propelled robot according to the first embodiment requires a start position for movement to be determined in advance. However, when used in an outdoor parking lot, for example, the self-propelled robot can move along a movement route while measuring its current position based on GPS, eliminating the need to determine a start position for movement.

[0084] In this way, the self-propelled robot may have any configuration as long as it moves along a predetermined movement route for the temperature sensor.

[0085] In the first embodiment, the temperature sensor is moved so as to pass under the vehicle body, but it may be moved below the vehicle body, for example, so as to pass beside the vehicle. In other words, it may be moved so as to pass between adjacent vehicles. In this case, since the battery cannot be measured from directly below, the measurement accuracy decreases, but the degree of freedom in the movement route increases.

[0086] In addition, in the first embodiment, both the first determination section and the second determination section are provided, but this is not limitative, and only one of them may be provided.

[0087] In the movement device according to the modified example of the first embodiment, a wire is used as the guide, but it may also be a rail formed on the floor surface, for example.

[0088] In the second embodiment, the temperature sensor is built into the vehicle fixture, but the temperature sensor and the control unit may be built into a housing, and this housing may be installed for each vehicle. In this case, it is preferable to further include a self-propelled robot that installs and retrieves the housing.

[0089] In the first embodiment, the control unit installed in the mobile device is configured to perform the functions of each unit, but for example, all or some of the functions may be performed by a control unit installed in a terminal separate from the mobile device. This terminal is preferably a mobile terminal such as a smartphone, tablet, or laptop, but may also be a stationary personal computer.

[0090] In the third embodiment, the holding member is installed so as to pass through the underside of a plurality of vehicles parked in a parallel arrangement in the left-right direction, but this is not limited to this. For example, the holding member may be installed so as to pass through the underside of a plurality of vehicles parked in a line in the front-rear direction. In this case, the width of the holding member should be shorter than the distance between the left and right tires.

[0091] In the third embodiment, the holding member wound in a roll shape is pulled out by a pull-out device, but this is not limiting. For example, the holding member may be pulled out and installed by a person.

[0092] In the third embodiment, the self-propelled robot is guided by infrared rays. However, for example, the self-propelled robot may be equipped with a sensor that detects obstacles, and the robot may travel automatically based on the sensor.

[0093] Furthermore, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0094] 100 Vehicle battery monitoring device X vehicle X1 body T Tire B Battery 10 Temperature Sensor 20 Mobile device (self-propelled robot) C control section C4 1st judgment part C5 Threshold memory unit C6 2nd judgment part C7 Notification Department G Guide 50 Retaining member 60 Retaining member container 70 Drawer device (self-propelled robot)

Claims

1. A vehicle battery monitoring device that monitors a battery mounted on a parked vehicle, A vehicle battery monitoring device comprising a temperature sensor for measuring the temperature of the battery from outside the vehicle.

2. 2. The vehicle battery monitoring device according to claim 1, wherein the temperature sensor measures the temperature from below the vehicle body.

3. 2. The vehicle battery monitoring device according to claim 1, further comprising a moving device for moving the temperature sensor.

4. 4. The vehicle battery monitoring device according to claim 3, wherein the mobile device is a self-propelled robot that is equipped with the temperature sensor and that passes under the vehicle body.

5. 4. The vehicle battery monitoring device according to claim 3, wherein the moving device includes a guide that runs around the underside of the vehicle body, and the temperature sensor is moved along the guide so as to pass through the underside of the vehicle body.

6. 2. The vehicle battery monitoring device according to claim 1, wherein the temperature sensor is installed for each vehicle.

7. 7. The vehicle battery monitoring device according to claim 6, further comprising a holding member disposed under the vehicle body for holding the temperature sensor.

8. 8. The vehicle battery monitoring device according to claim 7, wherein the holding member is a vehicle fixing device for fixing the vehicle so that it does not move from a parked position.

9. The holding member is an elongated member that is passed under each of the vehicles parked side by side, 8. The vehicle battery monitoring device according to claim 7, wherein a plurality of the temperature sensors are held along the longitudinal direction of the holding member.

10. 10. The vehicle battery monitoring device according to claim 9, wherein the holding member is in the form of a sheet that can be wound into a roll.

11. 11. The vehicle battery monitoring device according to claim 10, further comprising an unwinding device that unwinds the rolled holding member and passes it under the plurality of vehicle bodies.

12. 12. The vehicle battery monitoring device according to claim 11, wherein the extraction device is a self-propelled robot that travels on caterpillar tracks.

13. the temperature sensor measures the temperature or the rate of change of the temperature of the battery; a determination unit having at least one of a first determination unit that determines whether the battery is in a dangerous state based on measurements of a plurality of vehicles taken by the temperature sensors, and a second determination unit that compares the measurements taken by the temperature sensors with a preset threshold value and determines whether the battery is in a dangerous state; 13. The vehicle battery monitoring device according to claim 1, further comprising a notification unit that notifies the user when the determination unit determines that a dangerous state exists.

14. 14. The vehicle battery monitoring device according to claim 13, wherein the determining unit includes the first determining unit and the second determining unit.

15. A program used in a vehicle battery monitoring device that monitors a battery mounted on a parked vehicle, the vehicle battery monitoring device includes a temperature sensor that measures the temperature or the temperature change rate of the battery from outside the vehicle; a determination unit having at least one of a first determination unit that determines whether the battery is in a dangerous state based on measurements of a plurality of vehicles taken by the temperature sensors, and a second determination unit that compares the measurements taken by the temperature sensors with a preset threshold value and determines whether the battery is in a dangerous state; A program that causes the vehicle battery monitoring device to function as a notification unit that issues a notification when the determination unit determines that a dangerous state exists.

16. A vehicle battery monitoring method for monitoring a battery mounted on a parked vehicle, comprising: A method for monitoring a vehicle battery, comprising: moving a temperature sensor for measuring the temperature of the battery from outside the vehicle; and periodically measuring the batteries of a plurality of vehicles.

17. 17. The method of claim 16, wherein the temperature sensor is moved through an underside of the vehicle.

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