JP2646741B2 - Charge area management device for unmanned vehicle system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging area management device for an unmanned vehicle system equipped with a battery as a driving power source.

[Prior Art and Problems to be Solved by the Invention] Conventionally, as an unmanned vehicle system used in place of a belt conveyor in a line work in a factory or the like, there is, for example, a part assembly line shown in FIG. The plurality of unmanned vehicles 2 on the component assembly line 1 are equipped with a battery as a driving power source and travel along a predetermined traveling route. That is, each unmanned vehicle 2 detects a direction instruction signal and a speed instruction signal flowing through the guide wire 3 laid on the floor, and travels in the direction of the arrow by driving a motor (not shown) based on the detected signals.

Parts assembly line 1 has charging area 4, parts loading area 5,
An assembling area 6 and the like are sequentially provided, and each unmanned vehicle 2 travels at a slow speed in a work area such as the parts loading area 5 and the assembling area 6. As each unmanned vehicle 2 travels, various parts are loaded on the unmanned vehicle 2 in the parts loading area 5, and the loaded various parts are subjected to assembling processing in the assembling area 6. Is completed at the end point. Then, after the completed parts are unloaded between the assembly area 6 and the charging area 4, the batteries of the unmanned vehicles 2 are normally charged for a short time at the charging stations 7 to 10 in the charging area 4. .

If only normal charging is repeatedly performed in the charging area 4 while the vehicle travels on the unmanned vehicle 2 assembly line 1 a specified number of times, the characteristics of the battery become non-uniform and its life is shortened. An unmanned vehicle is detached from the assembly line 1 and is charged uniformly by a charging device provided separately from the charging area 4.

Therefore, the conventional assembly line 1 has a problem in that it takes time to perform uniform charging.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to provide a charging area management device for an unmanned vehicle system that can easily perform uniform charging for each unmanned vehicle. It is in.

A second object is to provide, in addition to the first object, a charging area management device for an unmanned vehicle system that has a buffer function for receiving unmanned vehicles in the charging area and can cope with a change in the amount of work of the unmanned vehicle. Is to do.

A third object, in addition to the first object, is to provide a charging area management device for an unmanned vehicle system that can improve workability and power saving after the end of equal charging.

[Means for Solving the Problems] In order to achieve the above object, a plurality of unmanned vehicles equipped with a battery as a driving power source and traveling along a predetermined traveling route are provided in the middle of the traveling route. And a plurality of charging stations provided in the charging area, and provided with a charger for charging the battery of each unmanned vehicle, and at least one of all the chargers for equal charging Control and control the other chargers for normal charging, and determine the necessity of normal charging or equal charging for the unmanned vehicles reaching the charging area, and when the unmanned vehicles require equal charging, The charging station is guided to a charging station capable of uniform charging, and is charged uniformly by a charger provided in the charging station. When the unmanned vehicle requires normal charging, a charging station capable of normal charging is provided. An unmanned vehicle system including charge control means for guiding the user to the station and performing normal charging by a charger provided at the charging station is a gist of the charging area management device.

In a second aspect, a battery is mounted as a driving power source,
And, a plurality of unmanned vehicles traveling along a predetermined traveling route, a charging area provided in the middle of the traveling route, and a charging area provided in the charging area, and charges the battery of each unmanned vehicle. A plurality of charging stations provided with chargers for performing charging, and at least one of all chargers is controlled to switch between equal charging and normal charging, and the other chargers are controlled for normal charging, and the charging is performed. Determining the necessity of equal charging for unmanned vehicles arriving in the area, securing a charging station capable of equal charging when the unmanned vehicle requires equal charging, and guiding the charging station to the secured charging station A charging area management device for an unmanned vehicle system including: a charging control unit that switches a charger provided in the vehicle from normal charging to equal charging to perform equal charging.

In a third aspect, a battery is mounted as a driving power source,
And, a plurality of unmanned vehicles traveling along a predetermined traveling route, a charging area provided in the middle of the traveling route, and a charging area provided in the charging area, and charges the battery of each unmanned vehicle. A plurality of charging stations provided with chargers for performing charging, and determining the necessity of normal charging for unmanned vehicles arriving at the charging area, and guiding the unmanned vehicles to the charging station when the unmanned vehicles require normal charging; The charging area management device of the unmanned vehicle system, which performs charging and includes a charging control unit that controls the charger of each station to switch from normal charging to equal charging based on the equal charging command signal, wherein the command signal is A first command signal indicating a short-time operation stop of each unmanned vehicle and a second command signal indicating a long-time operation stop of each unmanned vehicle. The unmanned vehicle is charged uniformly based on the command signal, and after the end of the equalized charging, the power of all the electric devices except the communication unit mounted on the unmanned vehicle is cut off, and the second An unmanned vehicle system having a function of performing equal charging on each of the unmanned vehicles based on the command signal of the above, and shutting off power of all electric devices including the communication unit mounted on the unmanned vehicle after the equal charging is completed. The gist is the charging area management device.

[Operation] Therefore, according to the first invention, when an unmanned vehicle arriving at the charging area requires equal charging, the unmanned vehicle is guided to a charging station capable of equal charging and is provided at the charging station. Charging is performed by the charged charger. When the unmanned vehicle requires normal charging, the unmanned vehicle is guided to a charging station capable of normal charging, and is normally charged by a charger provided in the charging station. As a result, unmanned vehicles that require uniform charging are guided to a charging station that can charge evenly in the same charging area as unmanned vehicles that are normally charged. It can be easily done without.

Further, according to the second invention, when the unmanned vehicle arriving at the charging area needs equal charging, a charging station capable of equal charging is secured, and the unmanned vehicle is guided to the secured charging station. The charger provided at the charging station guided by the guidance is switched from the normal charging to the uniform charging and performs the uniform charging for the unmanned vehicle. As a result, the unmanned vehicle arriving at the charging area can perform equal charging when equal charging is required and normal charging when normal charging is required. And can cope with changes in the amount of work of the unmanned vehicle.

Further, according to the third aspect, when each unmanned vehicle stops driving, equal charging is performed by the charger at each charging station. At this time, if the operation stop of each unmanned vehicle is for a short time, the power of the communication unit for traveling mounted on the unmanned vehicle is not shut off after the completion of the equal charging. Accordingly, when the unmanned vehicles are driven again after the suspension time has passed through the communication unit, the driver can immediately drive the unmanned vehicles.

On the other hand, when the operation suspension of each unmanned vehicle is for a long time, the power supply of the electric devices mounted on all the unmanned vehicles including the communication unit is cut off when the equal charging is completed. Therefore, it is possible to eliminate wasteful battery consumption that occurs when the operation is stopped for a long time.

First Embodiment Hereinafter, a first embodiment in which the first invention is embodied in a component assembly line will be described in detail with reference to FIGS.

The configuration of the component assembling line is the same as the configuration of the conventional example shown in FIG.

As shown in FIG. 1, the charging area 4 includes first to fourth normal charging stations 7 to 10 provided with chargers 7A to 10A for normal charging and a charger 11A for uniform charging. One even charging station 11 is arranged. A spin turn area 12 is provided between the first and third normal charging stations 7 and 9, between the second and fourth normal charging stations 8 and 10, and in front of the uniform charging station 11, respectively.
When the vehicle enters each charging station or starts from each charging station, the unmanned vehicle 2 performs a spin turn in the spin turn area 12.

Each charging station 7 is located between the first and second chargers 7A and 8A.
There is provided a control panel 13 for controlling the chargers 7A to 11A in a batch. On one side of each of the charging stations 7 to 11, charging optical communication units 14 to 18 are arranged. These optical communication units 14 to 18 are connected to the unmanned vehicles 2 in the charging stations 7 to 11 respectively.
The charging station arrival detection signal SG1 (see FIG. 2) is output to the control panel 13 while the unmanned vehicle 2 is being detected.

An entrance optical communication unit 19 is provided on the entrance side (right side in FIG. 1) of the charging area 4. The optical communication unit 19 arrives at the unmanned vehicle 2 at the charging area 4 and enters the charging area 4. Is detected, and a charging area arrival detection signal SG2 is output to the control panel 13 during detection of the arriving unmanned vehicle 2.

A reed switch 20 is provided on the exit side (left side in FIG. 1) of the charging area 4 to detect the passage of the unmanned vehicle 2 transmitted after charging is completed by any of the charging stations, and During detection, an unmanned vehicle passage detection signal SG3 is output to the control panel 13.

FIG. 2 shows the management device of the charging area 4 configured as described above and the electrical configuration of each unmanned vehicle 2.

Each unmanned vehicle 2 includes a controller 2a and a communication unit 2b that communicates with the charging optical communication units 14 to 18 and the entrance optical communication unit 19. The controller 2a controls the traveling of the unmanned vehicle 2 based on a direction instruction signal flowing through the guide line 3 and a speed instruction signal according to a built-in control program. When the unmanned vehicle 2 arrives at the charging area 4, the controller 2 a determines the machine number information of the unmanned vehicle 2,
And information on a battery mounted on the unmanned vehicle 2, for example, information on a battery voltage value, a voltage value at the time of constant current discharge, etc., via the communication unit 2b.
Call.

The charging area controller 25 constitutes charging control means,
The controller 25 includes the charging optical communication units 14 to 1
8, the entrance optical communication unit 19 and the reed switch 20 are connected. The chargers 7A to 11A are connected to the charging area controller 25.

The charging area controller 25 needs to charge the battery of the unmanned vehicle 2 based on the battery information received by the entrance optical communication unit 19 when the unmanned vehicle 2 arrives at the charging area 4 in accordance with the built-in control program. It is determined whether or not.

Further, the charging area controller 25 determines the use state of each station 7-11 based on the charging station arrival detection signal SG1 from the charging optical communication units 14-18 provided in the charging stations 7-11, that is, It is determined whether or not charging is being performed, and the charging time at the charging station in use is measured.

Further, the charging area controller 25 operates between the time when the unmanned vehicle 2 is no longer detected by the charging optical communication units 14 to 18 and the time when the passage of the unmanned vehicle 2 is detected by the reed switch 20 or the time when the entrance optical communication unit 19 is detected. Unmanned car 2 by
Until the detection of the arrival of the unmanned vehicle 2 at the charging stations 7 to 11 by any of the charging optical communication units 14 to 18 after the detection of the unmanned vehicle 2 is stopped, It is determined that there is a charging station 7
11 to wait for the start of another unmanned vehicle 2 and the arrival of the unmanned vehicle 2 to the charging stations 7 to 11.

When the unmanned vehicle 2 arriving at the charging area 4 needs equal charging, the charging area controller 25 sends the pass-through unmanned vehicle 2 to the charging area 4 via the entrance optical communication unit 19. And outputs information on the destination charging station (equal charging station 11), guides the unmanned vehicle 2 to the equal charging station 11, and charges the charger 11A.
Thus, the battery of the arriving unmanned vehicle 2 is charged uniformly for a predetermined time. The uniform charging time is desirably 4 to 8 hours, and is 4 hours in this embodiment.

When the arrival unmanned vehicle 2 needs equal charging, the charging area controller 25 determines that the equal charging station 11 is in use and the charging time T is longer than the lower limit charging time T ₀ (3 hours in this embodiment). If so, a start permission signal to be transmitted to the component loading area 5 is output to the unmanned vehicle 2 via the charging optical communication unit 18, and the unmanned vehicle 2 is transmitted. After this, the charging area controller 25
In the same manner as described above, the unmanned arriving vehicle 2 is guided to the uniform charging station 11, and the charger 11A performs the uniform charging for a predetermined time.

Moreover, even if the charging area controller 25 requires equalizing charge arrival unmanned vehicle 2, when charge time T equal charging station 11 is a use state is less than the lower limit charging time T _0, and the arrival unmanned vehicle 2 When the normal charging should be performed for the vehicle, the arrival unmanned vehicle 2 is allowed to enter the charging area 4 via the entrance optical communication unit 19 and a destination charging station (normal charging station in an unused state).
Is output, and the arriving unmanned vehicle 2 is guided to the normal charging station and normal charging is performed by the charger.

Next, the process of entering the unmanned vehicle into the charging area 4 executed by the charging area controller 25 will be described with reference to FIG.

This process is executed based on the arrival detection signal SG2 of the unmanned vehicle 2 to the charging area 4 by the optical communication unit 19 for entrance.

First, at step 41, it is determined whether or not the battery of the unmanned vehicle 2 needs to be charged uniformly based on the battery information of the arriving unmanned vehicle 2. Then, if it is determined in step 41 that equal charging is necessary, the process proceeds to step 42, where it is determined whether or not the equal charging station 11 is empty based on the charging station arrival detection signal SG1 of the charging optical communication unit 18. If it is determined in step 42 that the uniform charging station 11 is vacant, the process proceeds to step 43 in which the arrival unmanned vehicle 2 receives an entry permission signal and information on the destination uniform charging station 11 via the optical communication unit 19 for entrance. A call is made to make the arriving unmanned vehicle 2 enter the charging area 4.

In the next step 44, when it is detected that the unmanned vehicle 2 has arrived at the uniform charging station 11 based on the charging station arrival detection signal SG1 of the charging optical communication unit 18, in a subsequent step 45, the charger 11A detects the arrival of the unmanned vehicle 2. The battery is started to be uniformly charged for a predetermined time (4 hours).

Further, when determining that no empty uniformly charging station 11 at step 42, the process moves to step 46 the charging time T is determined whether or not the lower limit charging time T ₀ or more. When the charging time T in step 46 is determined to be the lower limit charging time T ₀ or the process proceeds to step 47, together with the ends the charging of the unmanned vehicle 2 during charge equalization, optical communication charge for the unmanned vehicle 2 A start permission signal is output via the unit 18,
The unmanned vehicle 2 is started. And reed switch 20
Unmanned vehicle 2 launched based on unmanned vehicle passage detection signal SG3
Is detected outside of the charging area 4,
Perform processing after 43.

Further, the charging time T in step 46 whether determined to be less than the lower limit charging time T _0, or charge equalization at step 41 determines that no change is necessary, the process advances to step 48. In this step 48, it is determined whether or not there is a free space in the normal charging stations 7 to 10 based on the detection signals of the charging optical communication units 14 to 17. If it is determined in step 48 that any of the normal charging stations are empty, the process proceeds to step 49. In step 49, the arrival unmanned vehicle 2 is transmitted via the entrance optical communication unit 19 through the entrance permission signal and the destination charging station. Sending information and charging unmanned vehicles 2 to charging area 4
To enter.

In the next step 50, when it is detected that the arriving unmanned vehicle 2 has arrived at the specified normal charging station based on the detection signal of the charging optical communication unit provided at the normal charging station specified at step 49, In the following step 45, normal charging of the battery of the arriving unmanned vehicle 2 is started by the charger of the designated charging station.

If it is determined in step 48 that all of the normal charging stations are in use, the process proceeds to step 52 to terminate charging of the unmanned vehicle 2 that has been charged for the longest time and to charge the unmanned vehicle 2 for charging. A start permission signal is output via the optical communication unit, and the unmanned vehicle 2 is started. When it is detected that the unmanned vehicle 2 that has started moving out of the charging area 4 is detected based on the unmanned vehicle passing detection signal SG3 of the reed switch 20, the processing after step 49 is performed.

As described above, in this embodiment, a plurality of normal charging stations 7 to 10 having chargers 7A to 10A for performing normal charging in the charging area 4 and an equal charging station 11 having chargers 11A for performing equal charging are included. Is determined based on the battery information of the unmanned vehicle 2 when the unmanned vehicle 2 arrives at the charging area 4. If the equalized charging is necessary, the unmanned vehicle 2 2 is guided to the uniform charging station 11 so that the charger 11A performs uniform charging for a predetermined time, so that the unmanned vehicles 2 on the assembly line 1 can be easily operated without the need for an operator, In addition, uniform charging can be performed evenly.

Further, in this embodiment, when the unmanned vehicle 2 arrives at the charging area 4, the machine number information of the unmanned vehicle 2 and the battery information mounted on the unmanned vehicle 2 are transmitted to the communication unit.
Since the output is provided to the charging area controller 25 via the optical communication unit 2b and the entrance optical communication unit 19, it is possible to accurately grasp the state of the battery of each unmanned vehicle and to take appropriate measures.

Second Embodiment Next, a second embodiment of the second invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is partially omitted.

As shown in FIG. 4, in this embodiment, three charging stations 31 to 33 having chargers 31A to 33A in the charging area 4 are provided.
Is installed. And each of the chargers 31A to 33A uses a switchable between equal charge and normal charge. 34
Reference numerals 36 represent optical communication units for charging.

As shown in FIG. 5, a charging area controller 25 controls the operation of the entire assembly line 1 (not shown).
From the end of the day, ie, each unmanned vehicle 2
End signal SG as a command signal to stop the operation of
When 4 is input, a uniform charging switching signal SG5 is output to each of the chargers 31A to 33A, and each of the chargers 31A to 33A is switched for equal charging, and the charging is performed at all the charging stations 31 to 33 in the charging area 4. Let them charge evenly. As the end signal SG4, two types of a first instruction signal on a weekday end signal and a second end signal before holiday as a second instruction signal are input.

When the start signal SG6 based on the operation of the start switch 37 provided on the control panel 13 is input at the start of the work on the day, the charging area controller 25 sends the normal charge switching signal SG7 to each of the chargers 31A to 33A. Output, each charger 31A ~ 33
A is switched to normal charging, and normal charging is performed at all charging stations 31 to 33 in the charging area 4.

Next, an end-of-work response process executed by the charging area controller 25 will be described with reference to FIG.

In the normal charging operation state of the charging area 4, the step
At 61, the charging area arrival detection signal of the entrance optical communication unit 19
When unmanned vehicle 2 arrives at charging area 4 based on SG2,
In the next step 62, an entry permission signal and information on a destination charging station (unused charging station) are transmitted to the arriving unmanned vehicle 2 via the entrance optical communication unit 19, and the arriving unmanned vehicle 2 is charged into the charging area 4. To enter. In the following step 63, when it is detected that the arriving unmanned vehicle 2 has arrived at the specified normal charging station based on the detection signal of the charging optical communication unit provided at the normal charging station specified at step 62, Continue to 64.

In step 64, it is determined whether or not the work has ended, that is, whether or not the work end signal SG4 has been input from the upper control panel. If it is determined that the work has not been finished, the process proceeds to step 65, where the battery of the unmanned vehicle 2 arrives by the charger of the designated charging station. Is charged normally.

If it is determined in step 64 that the work is over, step 66
Then, in step 66, a uniform charging switching signal SG5 is output to all the chargers 31A to 33A, and each charger 31A to 33A is switched for uniform charging.

In the following step 67, it is determined whether or not the work is over on a weekday. If it is determined that the work is over on a weekday, the process proceeds to step 68, where the equal charging time on weekdays is set within 10 hours. If the unmanned vehicle 2 is being charged at another charging station at the time of setting the weekday uniform charging time, the charging is stopped.

In the following step 69, equal charging is performed at all charging stations accommodating the unmanned vehicles 2. In addition, the charging station in the unused state waits for the arrival of another new unmanned vehicle 2 to perform uniform charging. After the charging time has elapsed at each charging station in step 70, the unmanned vehicle 2
The power supply to other than the communication unit 2b is stopped. This is the operation control device (not shown) at the start of the next day.
This is to enable each unmanned vehicle 2 to be turned on and activated based on a wireless start signal from the vehicle.

If it is determined in step 67 that the work is closed before holidays, the routine proceeds to step 71, where the pre-holiday uniform charging time is set to 10 hours. Even when the pre-holiday uniform charging time is set, similarly to step 68, if the unmanned vehicle 2 is being charged at another charging station, the charging is stopped.

In the following step 72, uniform charging is performed at all charging stations accommodating the unmanned vehicles 2. And step
When the charging time elapses at each charging station at 73, all power supplies of the unmanned vehicle 2 are turned off. This is to eliminate battery power consumption during holidays. At the beginning of the holiday, the worker turns on the power of all the unmanned vehicles 2 to activate the unmanned vehicles 2.

As described above, in the second embodiment, each of the chargers 31A to 33A can be switched between the one for uniform charging and the one for normal charging. And the unmanned vehicle 2 accommodated in all charging stations can be charged uniformly. In addition, the equal charge is distinguished from the equal charge on weekdays and the equal charge before holiday, and in the case of equal charge on weekdays, the power supply of only the communication unit 2b is not stopped after the end of the equal charge, so that the next start can be quickly started. Work efficiency,
In the case of uniform charging before holidays, the supply of power to all the electric devices mounted on the unmanned vehicle is stopped after the uniform charging is completed, so that battery consumption can be suppressed.

In the first embodiment, whether or not equal charging is necessary is determined based on the battery information of the unmanned vehicle 2. However, the unmanned vehicle 2 is determined based on the number of times of inputting the machine number information of the unmanned vehicle 2. It may be determined whether or not the unmanned vehicle 2 needs equal charging by determining whether or not the number of work cycles has reached the specified number of times for performing equal charging.

In the first embodiment, the charger of the charging station 11 is used.
Although 11A is used for uniform charging, the charger installed in the charging station 11 may be switchable between equal charging and normal charging. By doing so, charging area 4
If the unmanned vehicle 2 arriving at the vehicle does not need the uniform charging, the charger can be switched to the normal charging to perform the normal charging, so that the charging area 4 can have the buffer function of the unmanned vehicle 2, It is possible to cope with a change in the work amount of the unmanned vehicle 2.

[Effects of the Invention] As described in detail above, according to the first invention, uniform charging can be easily performed for each unmanned vehicle.

According to the second invention, in addition to the effect of the first invention, the charging area has a buffer function for receiving unmanned vehicles and can cope with a change in the work amount of the unmanned vehicles.

A third object, in addition to the first object, is to provide a charging area management device for an unmanned vehicle system that can improve workability and power saving after the end of equal charging.

[Brief description of the drawings]

1 to 3 show a first embodiment of the present invention,
FIG. 1 is a configuration diagram showing a charging area, FIG. 2 is a block diagram showing an electric configuration of a charging area management device, and FIG. 3 is a flowchart showing a process of entering an unmanned vehicle into a charging area. 4 to 6 show a second embodiment, FIG. 4 is a block diagram showing a charging area, FIG. 5 is a block diagram showing an electric configuration of a charging area management device, and FIG. It is a flowchart. FIG. 7 is a schematic diagram showing a conventional example of an unmanned vehicle system. In the figure, 2 is an unmanned vehicle, 4 is a charging area, 7 to 11, 31 to 33 are charging stations, 7A to 11A, 31A to 33A are chargers, and 25 is a charging area controller as charging control means.

Claims (3)

(57) [Claims] A battery is mounted as a driving power source, and
A plurality of unmanned vehicles traveling along a predetermined traveling route; a charging area provided in the middle of the traveling route; and a charging device provided in the charging area and charging a battery of each unmanned vehicle. A plurality of charging stations with chargers, at least one of the chargers is controlled for uniform charging, and the other chargers are controlled for normal charging, and for unmanned vehicles reaching the charging area. To determine the necessity of normal charging or equal charging, and when the unmanned vehicle requires equal charging, guide the user to a charging station capable of equal charging and have the charger provided at the charging station perform equal charging. Charging control means for guiding the unmanned vehicle to a charging station capable of normal charging when the unmanned vehicle requires normal charging, and performing normal charging with a charger provided at the charging station; An unmanned vehicle system equipped with a charging area management device. 2. A battery is mounted as a driving power source, and
A plurality of unmanned vehicles traveling along a predetermined traveling route; a charging area provided in the middle of the traveling route; and charging provided in the charging area and charging a battery of each unmanned vehicle. A plurality of charging stations with chargers, at least one of the chargers is controlled to switch between equal charging and normal charging, and the other chargers are controlled for normal charging, and the charging area is Judging the necessity of equal charging for unmanned vehicles arriving, securing a charging station capable of equal charging when the unmanned vehicle requires equal charging, and providing a charging station guided to the secured charging station. A charging control means for switching the charged charger from the normal charging to the equal charging to perform the equal charging. 3. A battery is mounted as a driving power source, and
A plurality of unmanned vehicles traveling along a predetermined traveling route; a charging area provided in the middle of the traveling route; and charging provided in the charging area and charging a battery of each unmanned vehicle. A plurality of charging stations provided with a device, determining the necessity of normal charging for the unmanned vehicles arriving at the charging area, and guiding the unmanned vehicles to the charging station when the unmanned vehicles require normal charging; Charging control means for performing normal charging and switching control of the chargers of the respective stations from normal charging to uniform charging based on a command signal for uniform charging. Comprises a first command signal indicating a short-time operation stoppage of each unmanned vehicle and a second command signal indicating a long-time operation stoppage of each unmanned vehicle. Performing an equal charge on each of the unmanned vehicles based on the first command signal, and after completing the equal charge, shut off power supplies of all electric devices except for a communication unit for traveling mounted on the unmanned vehicle, A function of performing equal charging on each of the unmanned vehicles based on the second command signal, and shutting off power of all electric devices including the communication unit mounted on the unmanned vehicles after the equal charging is completed. Charge area management device for unmanned vehicle systems.