Harvesting work vehicle

Abstract

To solve such the problem that, when power is fed from a work vehicle, the vehicle operates in an unmanned state and which may cause a risk of vehicle theft.SOLUTION: A harvesting work vehicle prevents a charge plug from being attached and detached or is prevented from travelling during power feeding work.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a work vehicle that utilizes its own vehicle's power supply battery to supply power to other vehicles or to a house requiring power supply. [Background technology]

[0002] Because charging takes time, vehicles are often left unattended, but theft of vehicles and parts such as batteries occurs during this time. Vehicle theft can lead to accidents, so measures to prevent this are desirable.

[0003] In addition, when it comes to responding to power supply during disasters, how to utilize information from power supply vehicles is an important issue. (Patent Document 1) [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-239616 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the prior art, a power plug locking device is provided in the connector to prevent unauthorized removal. The locking mechanism (electric locking mechanism) of the power plug locking device is a technology that includes a locking member that can engage with the power plug when it is fully inserted into the inlet, and an actuator that operates the locking member to two positions, a locked position and an unlocked position.

[0006] In addition, the power lock function determines that the power cable has been cut when the charging voltage drops. However, the prior art only provides an electric lock function, and does not disclose the detailed mechanism of the power supply plug locking device. Therefore, it is not possible to lock the power supply part of a conventional 100V or 200V outlet.

[0007] The present invention aims to provide a locking mechanism that combines a mechanically (materially) fixed mechanism, an electrical mechanism, and an information and communication function to prevent vehicle theft. [Means for solving the problem]

[0008] The first aspect of the present invention is achieved by the following technical means.

[0009] a vehicle body 1a, traveling devices 2, 3 supported by the vehicle body 1a and causing the vehicle body 1a to travel, a work machine 18 supported by the vehicle body 1a and performing work on a field, a battery 123 mounted on the vehicle body 1a, an electric motor 4 driving the traveling devices 2, 3, work machine support parts 15, 16 for detachably supporting the work machine 18, the work machine support parts 15, 16 to which an additional battery 101 connectable to the battery 123 in place of the work machine 18 can be attached, and an additional connection terminal 104 electrically connected to the battery 123 and the additional battery 101 and for receiving and transmitting power from and to the outside of the vehicle body 1a, the additional connection terminal 104 is provided with a 100V outlet and a 200V outlet, and is provided with a locking structural function that can be fixed to the additional connection terminal 104 so that the plug cannot be pulled out when the outlet is connected, and the structural function cannot be unlocked unless a special release signal is received from the user.

[0010] The second aspect of the present invention is achieved by the following technical means.

[0011] The starter device of the vehicle body 1a has a mode in which only external power supply is possible and the vehicle cannot be driven, a mode in which both external power supply and vehicle driving are possible, and a mode in which no external power supply is possible and only vehicle driving is possible, and all of the modes are fixed by a physical or electrical key, and the mode cannot be changed unless the mode is released by the physical or electrical key.

[0012] The third aspect of the present invention is achieved by the following technical means.

[0013] During power supply, if the battery temperature rises above a predetermined value T1, the hood automatically opens, and if the battery temperature rises to an even higher predetermined value T2, the power supply capacity is reduced or stopped.

[0014] The fourth aspect of the present invention is achieved by the following technical means.

[0015] After the power supply is terminated, it is electrically confirmed that the charging plug has been removed, and then the vehicle cannot be driven unless a predetermined action operation that has been registered in advance is performed.

[0016] The fifth aspect of the present invention is achieved by the following technical means.

[0017] The system is equipped with satellite positioning devices and mobile communication capabilities, and when a power supply is needed in a specific area, the location information of a work vehicle with a power supply configuration is made public, and as an emergency power spot, location confirmation and supply information are made public on the Internet. Effect of the Invention

[0018] The first, second and fourth aspects of the invention make it possible to prevent theft of a vehicle or the like.

[0019] The third aspect of the present invention makes it possible to prevent the battery from heating up due to power supply and charging.

[0020] According to the fifth aspect of the present invention, it is possible to confirm the state and location of a vehicle that can supply power in the event of a disaster. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a diagram showing the configuration of a tractor in a state where a work implement is lowered to a height at which the work implement can be used in an embodiment of the present invention; [Diagram 2] FIG. 1 is a configuration diagram of a tractor in a state where a working implement is elevated in an embodiment of the present invention. [Diagram 3] FIG. 1 is a diagram showing the configuration of a tractor with an additional battery installed instead of a work machine according to an embodiment of the present invention. [Figure 4]FIG. 4 is a side view of the embodiment shown in FIG. [Diagram 5] FIG. 1 is a diagram for explaining the configuration of an additional connection terminal for supplying power to an external device according to an embodiment; [Figure 6] Functional block diagram of battery control and connection according to an embodiment. [Figure 7] FIG. 1 is an explanatory diagram of a state in which the cable is stored according to an embodiment; [Figure 8] 1 is a structural diagram of a starter for a work vehicle according to an embodiment of the present invention; [Figure 9] Movement of motor 34 for rotating the locking case and arrangement of each plug [Figure 10] System diagram for sharing information on work vehicles that can supply power in the event of a disaster to specific regions [Figure 11] Block diagram showing how power supply and charging speeds are changed [Figure 12] Block diagram explaining the limiting action of each motor [Figure 13] Flow diagram showing temperature-dependent control of battery power supply and charging [Figure 14] A perspective view of a work vehicle with an extension cord as a power supply plug [Figure 15] Caster configuration diagram for additional battery [Figure 16] Additional battery cushioning installation diagram DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] The present invention will now be described with reference to the embodiments shown in the drawings.

[0023] The work vehicle shown in Figs. 1 to 16 shows an example of this embodiment.

[0024] The background of the present invention will be described. The work vehicle of the present invention is equipped with functions that can be fully utilized for the original agricultural work, but also becomes a vehicle that can supply power in the event of a disaster, and serves as a power supply base in the disaster area.

[0025] One example of a work vehicle is a tractor, which is an agricultural machine. During the busy farming season, the tractor can be used to till the soil in fields, transport materials, and perform pest control work by replacing the implements, but during the off-season, it is left waiting in the barn. Such agricultural machines are used intensively in the short term, but are not used otherwise.

[0026] On the other hand, the number of electrified homes and products has increased in recent years, and if the power supply is cut off during a disaster, it can cause serious problems. In hospitals, schools, and public institutions, if the power supply is cut off for an extended period of time, it can be life-threatening.

[0027] Considering this current situation, we believe that agricultural machinery that is on standby during the off-season can play an important role if it becomes a vehicle that can supply electricity. In particular, agricultural machinery can run on muddy ground and on rough roads where cars cannot, so we believe that agricultural machinery and construction machinery can carry out this work.

[0028] Taking this background into consideration, we believe that market demand for the work vehicle of the present invention will increase.

[0029] The work vehicle of the present invention will now be described.

[0030] FIG. 1 is an explanatory diagram of a tractor as an example of a work vehicle according to an embodiment, and is an explanatory diagram of a state in which a work implement is lowered to a height at which the work implement can be used.

[0031] FIG. 2 is an explanatory diagram of a tractor as an example of a work vehicle according to an embodiment, with the work implement in a raised state.

[0032] 1 and 2, a tilling work vehicle 1 as one example of a work vehicle of the present invention is provided with front wheels 2, 2 and rear wheels 3, 3 at the front and rear of a traveling body (one example of a vehicle main body) 1a. A traveling motor (not shown), one example of an electric motor, is mounted inside a bonnet 6 at the front of the traveling body 1a. The rotational power of the traveling motor is appropriately reduced by a speed change device in a transmission case (not shown) and is configured to be transmitted to the front wheels 2, 2 and the rear wheels 3, 3.

[0033] A work machine such as a tiller 18 for tilling the ground (field) behind the work vehicle 1 is attached to the rear of the vehicle body of the work vehicle 1, and power is transmitted via a PTO shaft (not shown) to drive the work machine. Drive is transmitted to the PTO shaft in the embodiment from a PTO motor (not shown) as an example of an electric motor.

[0034] In this specification, the left and right sides when facing the forward movement direction of the work vehicle 1 are referred to as the left and right sides, respectively, and the forward movement direction is referred to as the front side, and the backward movement direction is referred to as the rear side.

[0035] A driver's seat (operating seat) 8 is disposed at the top of the traveling vehicle body 1a, and a steering wheel 10, a parking brake (not shown), and the like are disposed in front of the driver's seat 8. Also disposed in front of the driver's seat 8 are a display panel (meter panel) for a speedometer (not shown), various operation switches (not shown), and the like. Disposed in front of the driver's seat 8 at the bottom are travel operating tools such as a brake pedal 12 and an accelerator pedal 13 having a forward pedal and a reverse pedal.

[0036] In Fig. 1, lift arms 15, 15 are pivotally mounted to the rear of the traveling vehicle body 1a. Lift rods 17, 17 are interposed between the lift arms 15, 15 and lower links 16, 16, and a tiller 18, an example of a working machine, is connected to the rear of the lower links 16, 16.

[0037] The lift arm 15 is driven by a hydraulic cylinder (not shown). When the hydraulic pressure in the hydraulic cylinder increases and the lift arms 15, 15 are rotated upward, the work machine (cultivator) 18 is raised via the lift rod 17, lower link 16, etc. When the hydraulic oil is discharged and the hydraulic pressure decreases, the lift arms 15, 15 are lowered.

[0038] In addition, the working machine mounted to the rear of the traveling body 1a, i.e., the working machine to which drive is transmitted from the PTO shaft extending along the lower link 16, is not limited to rotary tilling equipment for agricultural work, but includes working machines such as plows, seed sowing machines, seedling transplanters, fertilizer spreaders, and pesticide spreaders.

[0039] FIG. 3 is an explanatory diagram of a state in which an additional battery is mounted in place of the work implement in the tractor of the embodiment.

[0040] FIG. 4 is a side view of the embodiment shown in FIG.

[0041] 3 and 4, in the work vehicle 1 of the embodiment, it is possible to remove the tiller 18 as an example of a working machine and attach the additional battery 101 to the lower link 16 and the lift arm 15 as an example of a working machine support section. The lift arm 15 and the lower link 16 have strength and rigidity sufficient to be able to support the relatively heavy tiller 18, and are strong enough to support the additional battery 101 even if it is heavy.

[0042] 3 and 4, the additional battery 101 has a protective case 101a as an example of a container. The protective case 101a is formed so as to cover the entire additional battery 101. Note that it is preferable that the upper surface of the protective case 101a is configured without holes or openings to protect against rainwater, but it is also possible to form holes or openings on the side surfaces. Forming holes or openings improves the ventilation inside the additional battery 101. This is preferable because it allows the heat generated inside the additional battery 101 to be efficiently dissipated and the inside to be cooled.

[0043] FIG. 6 is a functional block diagram of the battery control and connection according to the embodiment.

[0044] 3, additional connection terminals 104 are formed on the upper part of protective case 101a. The shape of additional connection terminals 104 does not matter, but it is preferable to use standards used in passenger cars (particularly electric cars and hybrid cars), such as J1772, IEC62196-2, CHAdeMO (registered trademark), from the viewpoint of standardizing parts and standards.

[0045] When the above-mentioned standardized terminals are used as the additional connection terminals 104, the additional battery 101 can be used not only by connecting it to the traveling body 1a, but also when it is removed from the work vehicle 1. In other words, it is also possible to use the additional battery 101 by directly connecting a commercially available cable to the additional connection terminals 104 of the removed additional battery 101. This increases the degree of freedom in use, making it easier to use effectively in times of disasters and the like, and easier to handle.

[0046] 6, a circuit breaker 106 as an example of a safety circuit and a hall sensor (magnetic sensor) 107 as an example of a current detector that detects a current flowing between the additional connection terminal 104 and the additional battery main body 103 are connected between the additional connection terminal 104 and the additional battery main body 103. The circuit breaker 106 and the hall sensor 107 are disposed inside the protective case 101a. The additional battery main body 103 and the hall sensor 107, the hall sensor 107 and the circuit breaker 106, and the circuit breaker 106 and the additional connection terminal 104 are connected by high-voltage power supply lines 108 (108a to 108c) as an example of a connection cable.

[0047] An additional battery manager 110 as an example of an additional control circuit is connected to the additional battery main body 103, the Hall sensor 107, and the molded case circuit breaker 106. The additional battery manager 110 is configured by a small information processing device, a so-called microcomputer. The additional battery manager 110 is also electrically connected to a network card 111 as an example of a communication circuit, a touch panel 112 as an example of an additional input device, and a switching unit 124 (described later) on the traveling vehicle body 1a side. The additional battery manager 110 is connected to each part by a CAN (Controller Area Network) 114 as an example of a communication line. Note that the connection is not limited to CAN, and any conventionally known communication line for transmitting and receiving information can be used. Note that the power supply 113 that drives the additional battery manager 110 can be, for example, a dry cell, but it is also possible to use the additional battery main body 103.

[0048] The additional battery manager 110 receives the detection result of the Hall sensor 107. Furthermore, when an abnormal state such as an overcurrent is detected based on the detection result of the Hall sensor 107, the additional battery manager 110 controls the connection / disconnection of the wiring circuit breaker 106 to protect each part of the additional battery 101. Furthermore, the additional battery manager 110 controls switching between power supply and charging of the additional battery main body 103. Furthermore, the additional battery manager 110 can display the state of the additional battery main body 103 on a touch panel 112 as an example of a display unit, and can receive input from the touch panel 112 as an example of an input unit.

[0049] Furthermore, the additional battery manager 110 communicates with the outside via the network card 111. For example, when power is to be supplied from the work vehicle 1 to the outside, it is preferable that the user checks on the touch panel 112 and manually inputs permission for external power supply. That is, when permission for external power supply is input from the touch panel 112, it is transmitted to the protection circuit on the house side by wireless communication via the network card 111, the protection circuit on the house side is switched to power supply from the external power source (work vehicle 1), and when the work vehicle 1 side receives by wireless communication that the switch on the house side has been completed, power supply from the work vehicle 1 is started, thereby enabling safe power supply.

[0050] In addition, when power is supplied from the work vehicle 1 to a facility such as a house, if the facility consumes a lot of power, the load on the work vehicle 1 side becomes large, so it is desirable to provide multiple switches in the protection circuit on the facility side and to configure it so that the supply / non-supply of power can be switched for each switch depending on the load. For example, if a heated house used for growing strawberries or other fruits experiences a power outage or the power supply becomes unstable, it is possible to supply power from the work vehicle 1, but if the power consumption is high due to the operation of the ventilation fan and opening and closing windows of the heated house, it is preferable to protect it with a protection circuit. In addition, if the power supply becomes unstable, it is preferable to control the protection circuit to switch so that the shortage is supplied from the work vehicle 1 only when there is a temporary shortage of power. In addition, it is not limited to supplying the shortage of power for the entire heated house with the work vehicle 1, and it is preferable to switch the switch of the protection circuit so that power is supplied only to the power supply destinations with high priority in the heated house.

[0051] 3, 4, and 6, one end of a connection cable 121 is connected to the additional connection terminal 104. The connection cable 121 extends toward the bonnet 6 of the traveling vehicle body 1a. The connection cable 121 is preferably routed along the underside of a floor step or fender of the traveling vehicle body 1a. By routing the connection cable 121 along the underside of a fender or the like, it is possible to prevent rainwater from entering the connection cable 121 when a worker moves on the floor step, and it is also possible to prevent the connection cable 121 from being cut when it gets caught.

[0052] The bonnet 6 houses the traveling motor 4 and a main battery (an example of a battery) 123. Also provided inside the bonnet 6 is a switching unit 124 to which the other end of the connection cable 121 is connected. The switching unit 124 is configured with a microcomputer, similar to the additional battery manager 110. When the work vehicle 1 is stopped, the switching unit 124 switches between charging from an external power supply facility and feeding power to the external facility. Also, when traveling for work, the switching unit 124 switches between feeding / not feeding power to the traveling motor 4 and feeding / not feeding power to the PTO motor.

[0053] When the traveling motor 4 or the PTO motor is used as a regenerative motor during traveling for work, the switching unit 124 switches when charging the main battery 123 with power generated by the regenerative motor. The switching unit 124 also performs voltage transformation when the voltage of the main battery 123 or the additional battery 101 differs from the voltage of the traveling motor 4 or the external power supply facility. In addition, since there is a risk of an accident if the work vehicle 1 starts moving when charging from an external power source or when external power is supplied, it is desirable to configure the switching unit 124 so that, for example, charging from an external power source or external power supply cannot be received unless the work vehicle 1 is stopped.

[0054] As the switching unit 124 of the embodiment, a DCMPU (Direct Current Multi Power Unit) used in passenger cars not having a PTO shaft 9 can be modified and used.

[0055] FIG. 7 is an explanatory diagram of the cable according to the embodiment, showing the cable in a stored state.

[0056] An external connection terminal 126 is connected to the switching unit 124 via an external connection cable (an example of a cable) 127. The external connection terminal 126 is configured to be capable of inputting and outputting control signals via the CAN 114. In other words, via the external connection terminal 126, it is possible to detect the presence or absence of an external connection, and to control switching between charging from an external facility and power supply to the external facility.

[0057] In this embodiment, external connection cable 127 is stored in a wound state inside bonnet 6. External connection cable 127 is configured so as to be capable of being wound up and pulled out by a conventionally known spiral spring type winding reel.

[0058] Fig. 5 is a diagram for explaining the configuration of an additional connection terminal 104 for supplying power to the outside of the embodiment. In Fig. 5, the additional connection terminal 104 has a locking case 33, and the locking case of the additional connection terminal 104 is opened and closed by the rotation of a rotating motor 34, and since it serves as a brake motor, it cannot be opened without a release signal from the operator of the work vehicle. The release signal can be a signal from the operator's smartphone or the release of the vehicle's PIN code key. The additional connection terminal 104 forms the bottom of the case, and has a 100V connector 30 and a 200V connector 31 as connectors for power supply.

[0059] In the event of a disaster, by inserting the 100V connector 42 of the power supply destination into this portion, power can be passed through the extension cord drum 40, and power can be supplied to home appliances and the like using the 100V connector 41. Also, the 200V connector 31 can be connected to the 200V connector 50 to supply power. The 200V power source is also called a power source, and is used for large electric devices and the like. Normally, the connection terminal 51 is connected to the power company's distribution line, but by disconnecting this line and connecting it to the 200V connector 50, power for the house can be supplied from the terminal 52.

[0060] As described above, the 100V and 200V connectors are always connected and are generally connected inside the house, so it is impossible for a third party to remove this part. However, as in the present invention, in the event of a disaster, as shown in FIG. 5, the connector passes through the wall 60 of the house and connects to the additional connection terminal 104 of the work vehicle outside the house. Therefore, the power supply may be continued for a long period of time, and the operator of the work vehicle may get up from his / her seat. During this time, it is possible for a third party to remove the connector.

[0061] Since the 100V connector 42 and the 200V connector 50 can be easily removed, measures must be taken to prevent removal. In the present invention, the additional connection terminal 104 has a locking case 33, and the rotation of the rotation motor 34 turns the additional connection terminal 104 into a locking case. The cords of the 100V connector 42 and the 200V connector 50 only extend to the outside through the cutout portion 35 of the locking case 33, and it is not possible to insert one's hand into this locking case 33. Therefore, the connector is mechanically locked so that it cannot be removed.

[0062] This locking mechanism prevents a third party from arbitrarily removing the connector while power is being supplied and supplying power to something else, or from disconnecting the connection and stealing the work vehicle. Since there is a possibility that the connection wires could be cut while power is being supplied and the vehicle could be stolen, each power line is protected with a flexible spiral tube to make it difficult to cut. Furthermore, since forcible cutting would cause a short circuit with the spiral tube, the system is equipped with a function to stop all the functions of the work vehicle at once by detecting overcurrent. Alternatively, since there would be a sudden drop in the power supply after that, the system can also be equipped with a function to stop the functions if the power per unit time changes beyond a specified value.

[0063] The additional connection terminal 104 also includes a CHAdeMO (registered trademark) connection plug 32. The CHAdeMO (registered trademark) connection plug 32 has a function that when it receives a power signal and is supplying or receiving power, a locking tab on the plug is activated and the connection cannot be disconnected, but in the present invention, the CHAdeMO (registered trademark) connection plug 32 also has a locking structure function that utilizes a locking case 33, similar to the 100V connector 42 and the 200V connector 50, making it possible to provide dual support.

[0064] 9 shows the flow of automatic control of the movement of the motor 34 for rotating the locking case 33 and the locking hook of the CHAdeMO (registered trademark) connection plug 32. This flow is not for theft prevention, but for preventing the plug from being pulled out during power supply work. Power supply starts S9-1, and the plug is locked S9-2. Power supply is thus continuous, but if any operation of the work vehicle S9-3 is performed, the plug lock is released S9-4.

[0065] FIG. 7 is an explanatory diagram of a state in which the cable according to the embodiment is pulled out.

[0066] 7, in the embodiment, external connection cable 127 is stored in the stored position inside lid 129 that opens and closes an opening formed in bonnet 6 with external connection terminal 126. In the embodiment shown in Fig. 7, the opening and lid 129 are provided on the rear right side surface of bonnet 6. Providing lid 129 can improve the waterproofing of external connection terminal 126, external connection cable 127, and the inside of bonnet 6, and can reduce the risk of electric leakage.

[0067] In addition, since the bonnet 6 can be opened and closed for maintenance of the driving motor 4, etc., it is possible to open the bonnet 6 without providing the opening 128 or the lid 129 itself, and expose the external connection cable 127 so that it can be used.

[0068] The external connection terminal 126 can be the same as the additional connection terminal 104 (CHAdeMO (registered trademark), etc.), or it can be a single-phase 100V outlet or a three-phase 200V outlet by installing a transformer, converter, inverter, etc. between the switching unit 124 or the switching unit 124 and the external connection cable 127 to perform transformation or AC-DC conversion.

[0069] Therefore, by pulling out the external connection cable 127, it is possible to connect the work vehicle 1 to the outside, and no cable is required on the external side. Therefore, in the event of an emergency such as a power outage or disaster, the work vehicle 1 can move to a location where power is required, and even if no cable is prepared on the facility side, it is possible to extend the external connection cable 127 and supply power.

[0070] Furthermore, in the work vehicle 1 of the embodiment, by mounting not only the main battery 123 but also the additional battery 101, it is possible to dramatically increase the overall electrical capacity. Therefore, compared to an electric vehicle or the like that is mounted only with the main battery 123, it is possible to supply power in large capacity for a long period of time. This increases the possibility that power can be continued to be supplied from the work vehicle 1 until power is restored.

[0071] In particular, agricultural machinery such as tractors, combine harvesters, and seedling transplanters are used only for a limited period of the year. That is, tractors are used only during the plowing and land preparation periods, combine harvesters are used only during the harvesting period, and seedling transplanters are used only during the rice planting period. Therefore, depending on the size of the field, each work vehicle is used only for a few days to at most about one month in a year, and the rest of the time it is on standby in a warehouse or barn, and the standby period is long. Therefore, during the standby period when it is not being used, it is possible to remove the work machine and attach the additional battery 101, and charge the main battery 123 and the additional battery 101 with electricity generated by a solar power generation device or the like. Once charging with solar power generation is set up, the burden on the worker during charging is light. And by using the batteries 101, 123 that have been charged in an emergency, the possibility of continuing to use electricity until the power is restored is increased. Therefore, work vehicles that are on standby for a long period of time can be effectively used in an emergency.

[0072] 8 is a structural diagram of a starter 70 of a work vehicle. Since the work vehicle 1 is an electric work machine, it does not need to be equipped with a physical key, but since the work vehicle of the present invention also responds to disasters, it is possible to restrict operation from the outside using a communication device, etc., but it is also configured to be able to take physical action in the event that communication is interrupted.

[0073] By setting the mode to mode 72, which allows only external power supply and prevents the vehicle from driving, and then removing the physical key, the power supply function remains available but the vehicle cannot be driven, which serves to prevent theft when the operator leaves the seat during power supply operations.

[0074] Mode 73, which allows both external power supply and vehicle travel, allows the work vehicle to move even while power is being supplied. For example, if power supply is once connected but the situation changes and the work vehicle needs to be moved, this mode can be used. Once vehicle positioning is complete, the mode can be set to mode 72 and the physical key can be removed, or the mode can be left in mode 73 and the work vehicle can be moved.

[0075] Mode 74, which allows the vehicle to run without supplying power to the outside, is the normal working state. Since power cannot be supplied in mode 74, it also serves to prevent theft of power alone. For example, it can prevent a third party from supplying power to the auxiliary battery without permission while the operator is resting after temporarily stopping work.

[0076] Mode 71 is the stop state, and the vehicle cannot be powered or driven. By restricting movement with such a physical key, it is possible to prevent theft of work vehicles and to deal with theft of electricity.

[0077] By inserting a physical key into the agricultural machine and turning it, the VCU inputs a signal and communicates with the charging plug to release the lock. At the same time, the rotation motor 34 rotates, and the locking case of the additional connection terminal 104 is opened.

[0078] These unlocking technologies can be implemented by installing an image capture device and performing face recognition. It is also possible to unlock the door using a mobile terminal and a dedicated program. Furthermore, it is possible to use an IC key, such as an electronic key, instead of a physical key.

[0079] When power is supplied or charged, the temperatures of the additional battery body 103, the protective case 101a, the devices inside the bonnet 6, and the main battery 123 rise. A certain degree of temperature rise is not a problem, but if the temperature rise becomes large, it not only leads to poor charging and power supply efficiency, but also to battery deterioration. Therefore, if the temperature rise is large, measures are taken to increase the cooling effect.

[0080] The main battery 123, which is a device located inside the hood, is an auxiliary battery for the work vehicle. When charging or powering the additional battery body 103, charging or powering is performed similarly depending on the state of the power of the main battery 123. Therefore, measuring the temperature of the main battery 123 also serves as an indicator of the temperature of the entire system of this work vehicle. The inside of the hood in particular is protected against drips and dust, but it is prone to heat buildup.

[0081] In order to increase the cooling effect, there are methods of forcibly removing heat by blowing air or using a refrigerant, but the present invention takes a simple approach to preventing heat build-up by opening the hood.

[0082] Furthermore, if the battery temperature rises, the charging or power supply rate may be too fast.

[0083] Fig. 13 is a flow diagram showing temperature-dependent control of battery power supply and charging. Temperature is determined based on a two-stage criterion: when the battery temperature rises above a specified value (T1) (S13-1), the hood is automatically opened (S13-5), and when the battery temperature rises above an even higher specified value (T2) (S13-6), the power supply and charging speed are reduced (S13-7) or stopped.

[0084] Regardless of the temperature, the device will eventually stop after confirming that power supply or charging is complete for S13-3 and S13-8.

[0085] The power supply and charging speed reduction in S13-7 is a predetermined speed reduction, and the routine may be repeated several times. If the temperature does not drop below T2 even after the speed reduction is performed 10 times or more by setting an upper limit, the power supply and charging may be stopped, although this is not described in the flow.

[0086] Fig. 11 is a block diagram of the relationship for changing the power supply and charging speed. The additional battery manager 110 monitors and controls the power supply and charging speed. The power supply and charging speed can be set in advance by the power supply output setting unit 132, and the additional battery manager 110 controls the power state of the additional battery main body 103 according to the setting.

[0087] For example, if a house requires a small amount of power to be supplied for a long period of time, and if there is charging equipment in the house, the presence of equipment such as an external battery 133 can increase the power supply speed and complete the work in a short time.

[0088] In this way, the relationship between the control of the power supply and charging speed and the battery temperature is close, and power supply and charging can be performed under the best conditions while taking into account both conditions.

[0089] Figure 10 shows a system for sharing information about work vehicles that can supply power in a specific area during a disaster. When a disaster occurs, the power supply is stopped and there are also problems with the Internet, making it difficult to share information about work vehicles that can supply power in the vicinity. Since it takes time to supply power and the amount of power changes depending on the power supply work, it is possible to increase information about the possibility and time of reaching the next required supply location based on the current power supply state of the work vehicle and the current position of the work vehicle.

[0090] When a disaster occurs, important bases in areas where power has been cut off are selected by an information center 81, and data is transmitted to the cloud 80 as information 82. This information is transmitted to mobile terminals 83 of residents in the area and to the work vehicle 1 as information 86 and information 84. Upon receiving this information, the work vehicle 1 uploads the current location information, remaining battery power, and expected time of the next work operation to the cloud 80 as information 86.

[0091] Through this operation, the mobile terminal can obtain current information 86 of the work vehicle 1 as additional information in information 84. When disaster response is required, the mobile terminal 83 transmits this information as information 85, and the work vehicle 1 obtains various information and obtains information 87. This is a system.

[0092] This allows the work vehicle 1 to determine its current position and battery status, select important locations to respond, and respond to power supply. The mobile terminal 83 can also obtain this information and estimate its own response time. Since the mobile terminal has a mobile communication function, it can also obtain other information on the Internet, and by uploading the location information of the mobile terminal, it can also be uploaded as location information of places other than houses, such as a shed in a farm field or a power distribution device on a road. With these technologies, if a work vehicle has a satellite positioning device and mobile communication function and a power supply is required in a specific area, the location information of the work vehicle can be made public, and the location and supply information can be confirmed on the Internet as an emergency power supply spot.

[0093] The fourth invention will be described. After the power supply is terminated, it is electrically confirmed that the charging plug has been removed, and then the vehicle cannot be driven unless a pre-registered, specific action is taken, which also serves to prevent theft and prevents the work vehicle from operating erroneously due to an unexpected driver.

[0094] As one example, a PIN entry screen can be provided on the monitor at the operator's seat, and operation after charging can be enabled by entering a PIN.

[0095] Alternatively, a mobile device can be used to carry out special unlocking procedures using special software, or facial recognition using an imaging device, fingerprint recognition, etc. can also be used.

[0096] In either case, it is confirmed that the charging plug has been removed, i.e., no voltage or current is being generated, and then the locking case of additional connection terminal 104 is opened. It is also confirmed that the charging or power supply operation has been completed, and then a pre-registered operation, a one-action operation, is performed. Unless this is done, operations after charging are not possible.

[0097] This action also prevents accidents such as a short circuit caused by forcibly pulling out the plug during charging and power supply. In addition, only the operator who performed charging or power supply can operate the work vehicle after charging or power supply.

[0098] FIG. 12 explains the limiting action of each motor.

[0099] It is unclear when a disaster will occur. In some cases, it may occur during farm work, and if the work is performed at maximum capacity, it may not be possible to immediately attach the additional battery 103 due to heat build-up in the battery. Therefore, by carrying out work with restrictions even during normal work, overload can be prevented and an environment that can respond to an emergency can be prepared.

[0100] One example is to limit the travel motor acceleration 151. When working and not working, the instantaneity of the current value is weakened so as not to accelerate suddenly. When working, the travel motor maximum rotation speed 152 is controlled to be reduced. Note that by performing work with the work motor maximum output 153 also reduced, heat generation from the work motor is reduced, making it possible to immediately remove work equipment parts in the case of disaster relief work.

[0101] Having a mode that limits maximum output allows the operator to work with sufficient reserve power, enabling rapid response in emergencies.

[0102] In another embodiment of the present invention, a configuration for extending the power supply cable to supply power from a distance and a configuration for lowering an additional battery to the ground and facilitating the installation of other batteries will be described.

[0103] 14, a power supply plug 140 enables power supply to a distant location via an extension cable 141. In reality, the extension cable should be stored inside the bonnet 6 of the work vehicle 1, taking into consideration safety and dust and water resistance, but in cases where the work vehicle cannot move to the power supply location, etc., it is necessary to install an extension cable.

[0104] In this configuration, the extension cord 141 is hooked by wrapping it around a stand 143 for an extension cord cable that is provided on the right side of the work vehicle. A guard 142 protects the lower side of the extension cable 141 so that humans or surrounding obstacles do not get caught in the extension cable 141. Furthermore, since the additional battery 101 is disposed at the rear of the work vehicle 1 and the extension cable 141 is wired below the work vehicle 1, a protective case 5 is configured to prevent the extension cable 141 from being damaged while the work vehicle 1 is traveling.

[0105] 15 and 16 are configuration diagrams of the work vehicle 1 as viewed from below, and both show a structure in which the extension cable 141 is protected by a protective case 5 and the wiring extends from the right side of the vehicle.

[0106] 15 also shows a configuration in which casters 150 are provided below the additional battery 101 in anticipation of cases in which the additional battery 101 is removed from the work vehicle 1 and replaced at the work site. This makes it possible to move the additional battery 101 by human power even when it is lowered to the ground.

[0107] 16 shows a configuration in which a rubber cushioning material 160 is provided below the additional battery 101. When the work vehicle 1 needs to supply power or charge for an extended period of time, this cushioning material 160 allows the additional battery 101 attached to the work vehicle 1 to be lowered to the ground in a vibration-free environment, allowing for safe work. [Explanation of symbols]

[0108] 1 Work vehicle 1a Vehicle body 2,3 Running gear 4 Electric motor 6 Cover, bonnet 15,16 Work equipment support part 18 Work equipment 30 Connector for 100V 31 Connector for 200V 32 CHAdeMO (registered trademark) connection plug 33 Lockable Case 34 Rotation motor Connector for 50 200V 51 Connection terminal 52 Terminals 55 CHAdeMO (registered trademark) connection plug 70 Work vehicle starter 101 Extra Battery 101a Protective Case 103 Battery body 104 Additional connection terminal 106 Circuit breaker 107 Current Detector 108 Connection Cable 110 Additional control circuit 111 Communication circuits 112 Input Devices 114 Communication Lines 123 Battery

Claims

1. A vehicle body (1a); a traveling device (2, 3) supported by the vehicle body (1a) to cause the vehicle body (1a) to travel; a work machine (18) supported by the vehicle body (1a) for performing work on a farm field; A battery (123) mounted on the vehicle body (1a); an electric motor (4) for driving the traveling device (2, 3); a work machine support section (15, 16) that detachably supports the work machine (18), the work machine support section (15, 16) being capable of mounting an additional battery (101) that can be connected to the battery (123) in place of the work machine (18); An additional connection terminal (104) that is electrically connected to the battery (123) and the additional battery (101) and that supplies and receives power from the outside of the vehicle body (1a) is provided with a 100V outlet and a 200V outlet, and has a locking structural function that can fix the plug to the additional connection terminal (104) so ​​that the plug cannot be removed when the plug is connected to the outlet; A work vehicle in which the structural functions cannot be unlocked unless a special unlocking signal is received from a user.

2. A starter device of a vehicle body (1a) A mode in which the vehicle cannot run and only external power supply is possible. A mode that allows both external power supply and vehicle operation, It has a mode that allows the vehicle to run without supplying power to the outside. Each mode is fixed by a physical or electronic key, 2. The work vehicle of claim 1, wherein the mode cannot be changed unless the mode is released with a physical or electrical key.

3. 2. The work vehicle of claim 1, wherein, during power supply, if the battery temperature rises to or above a predetermined value (T1), the hood is automatically opened, and if the battery temperature rises to or above a higher predetermined value (T2), the power supply capacity is reduced or stopped.

4. 2. The work vehicle of claim 1, wherein after power supply has ended, it is electrically confirmed that the charging plug has been removed, and then the work vehicle cannot be driven unless a predetermined action operation that has been registered in advance is performed.

5. 2. A work vehicle as claimed in claim 1, which has a satellite positioning device and mobile communication capabilities, and when a power supply is needed in a specific area, the location information of the work vehicle with a power supply configuration is made public, and the location confirmation and supply information are made public on the Internet as an emergency power source spot.

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