Work vehicle

Abstract

To provide a work vehicle which enables work of an electric system to be performed efficiently.SOLUTION: A work vehicle includes: a vehicle body; a fuel battery mounted on the vehicle body; a battery unit which stores electric power generated by the fuel battery; a motor which is mounted on the vehicle body and driven by electric power stored in the battery unit; a device case disposed on the battery unit; and a cover which covers the device case.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a work vehicle.

Background Art

[0002] Patent Document 1 discloses a work vehicle including a fuel cell, a battery, a motor, and a traveling device. The fuel cell generates electric power stored in the battery using hydrogen gas. The motor rotates with the electric power of the battery, and the traveling device is driven by the rotational force.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above work vehicle, for example, in order to efficiently perform assembly work and maintenance work of the electrical system, an equipment case may be disposed on the battery. However, if mud or the like bounced up by the traveling device adheres to the equipment case disposed on the battery, the work efficiency of the electrical system may rather decrease. An object of the present disclosure is to provide a work vehicle capable of efficiently performing work on an electrical system.

Means for Solving the Problems

[0005] The work vehicle of the present disclosure includes a vehicle body, a fuel cell mounted on the vehicle body, a battery unit that stores the electric power generated by the fuel cell, a motor mounted on the vehicle body and driven by the electric power stored in the battery unit, an equipment case disposed on the battery unit, and a cover that covers the equipment case.

Effects of the Invention

[0006] According to the present disclosure, the work of the electrical system of the work vehicle can be efficiently performed.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

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Figure 10

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Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0008] <Summary of Embodiments of the Present Disclosure> Hereinafter, a summary of embodiments of the present disclosure will be listed and described. (1) The work vehicle according to the embodiment includes a vehicle body, a fuel cell mounted on the vehicle body, a battery unit that stores the electric power generated by the fuel cell, a motor mounted on the vehicle body and driven by the electric power stored in the battery unit, an equipment case disposed on the battery unit, and a cover that covers the equipment case.

[0009] According to the above work vehicle, since the equipment case disposed on the battery unit is covered by the cover, it is possible to suppress the adhesion of mud or the like to the equipment case. Thereby, the work of the electrical system can be efficiently performed.

[0010] (2) The work vehicle according to (1) preferably includes a first external terminal provided outside the equipment case, and the cover has a cover body that covers the equipment case and the first external terminal, and an opening / closing door provided on the cover body for accessing the first external terminal. In this case, since the first external terminal provided outside the equipment case is covered by the cover body, it is possible to suppress the adhesion of mud or the like to the first external terminal. Also, by opening the opening / closing door provided on the cover body, it is possible to easily access the first external terminal covered by the cover body. Thereby, the work of the electrical system can be performed more efficiently.

[0011] (3) The work vehicle according to the above (1) or (2) includes a first junction having the equipment case and a first external terminal provided outside the equipment case, and a second junction having a second external terminal disposed on the battery unit. Preferably, the cover covers the first junction and the second junction. In this case, since the first junction and the second junction disposed on the battery unit are covered by the cover, it is possible to prevent soil or the like from adhering to the first junction and the second junction.

[0012] (4) In the work vehicle according to the above (3), the first external terminal has a first connector to which power is input or output, the second external terminal has a second connector to which power is input or output, and preferably, the first connector is disposed above the second connector. In this case, the first connector and the second connector are disposed at different positions in the vertical direction. This makes it easier to connect cables to the first connector and the second connector respectively, so that the work of the electrical system can be carried out more efficiently.

[0013] (5) In the work vehicle according to the above (4), the battery unit is disposed outside the vehicle body in the vehicle width direction. The first connector has a first connection port to which a corresponding cable is connected, the second connector has a second connection port to which a corresponding cable is connected, and preferably, the first connection port and the second connection port each open toward the inside in the vehicle width direction. In this case, the cables connected to the first connection port of the first connector and the second connection port of the second connector can be drawn out toward the inside in the vehicle width direction. Thereby, the wiring length of the cables can be shortened compared with the case where the cables are drawn out toward the outside in the vehicle width direction.

[0014] (6) In the work vehicle according to (5) above, it is preferable that the cover has an opening for drawing out the cables connected to the first connection port and the second connection port on the inner side in the vehicle width direction. In this case, the cables connected to the first connection port of the first connector and the second connection port of the second connector can be easily drawn out from the opening of the cover. As a result, the work on the electrical system can be performed more efficiently.

[0015] (7) In the work vehicle according to (5) or (6) above, it is preferable that the second junction is arranged on the upper side of the battery unit and on the inner side in the vehicle width direction than the first junction. In this case, the second connector of the second junction is arranged on the inner side and the lower side in the vehicle width direction than the first connector of the first junction. As a result, it becomes easier to connect cables to each of the first connector and the second connector, so that the work on the electrical system can be performed more efficiently.

[0016] (8) In the work vehicle according to (7) above, it is preferable that the cover has a cover body that covers the first junction and the second junction, and an opening / closing door provided on the outer side in the vehicle width direction of the cover body. In this case, by opening the opening / closing door, it is possible to easily access the first junction covered by the cover body. As a result, the work on the electrical system can be performed more efficiently.

[0017] (9) In the work vehicle according to (8) above, the first external terminal is provided on the outer side in the vehicle width direction of the equipment case and has a service plug for cutting off the power path, and it is preferable that the service plug is arranged in the vicinity of the opening / closing door. In this case, by opening the opening / closing door, it is possible to easily access the service plug covered by the cover body. As a result, it is possible to easily cut off the power path by the service plug.

[0018] (10) In the work vehicle according to (8) or (9) above, the first external terminal is provided outside the equipment case in the vehicle width direction and has a voltage detector for checking the energization of the power path, and the voltage detector is preferably disposed in the vicinity of the opening / closing door. In this case, by opening the opening / closing door, easy access can be achieved to the voltage detector covered by the cover body. As a result, the energization of the power path can be easily checked by the voltage detector.

[0019] (11) The work vehicle according to any one of (1) to (10) above includes a driver's seat mounted on the vehicle body, a cabin having the driver's seat therein, and a traveling device having front wheels and rear wheels, and the battery unit is disposed between the front wheels and the rear wheels outside the vehicle body in the vehicle width direction, and the equipment case is preferably disposed in front of the cabin above the battery unit. In this case, since the equipment case is disposed in front of the cabin, the equipment case can be disposed above the battery unit without interfering with the cabin.

[0020] (12) In the work vehicle according to (11) above, the cabin has a windshield, and the cover is preferably disposed at a position where it can be visually recognized from the driver's seat through the windshield. In this case, an operator sitting in the driver's seat can easily visually recognize that the equipment case is covered with the cover through the windshield of the cabin.

[0021] (13) In the work vehicle according to (11) above, the cabin has side glasses, and the cover is preferably disposed at a position where it can be visually recognized from the driver's seat through the side glasses. In this case, an operator sitting in the driver's seat can easily visually recognize that the equipment case is covered with the cover through the side glasses of the cabin.

[0022] <Details of the Embodiment> Hereinafter, preferred embodiments will be described with reference to the drawings. Overall Configuration of the Work Vehicle FIG. 1 is a perspective view showing an embodiment of the work vehicle of the present disclosure. FIGS. 2 to 7 are a front view, a rear view, a side view (right side view), a side view (left side view), a plan view, and a bottom view of the work vehicle shown in FIG. 1. The work vehicle 10 of the present embodiment is a vehicle that can be used for agricultural work, and the work vehicle 10 shown in FIG. 1 is a tractor. The work vehicle is not limited to a tractor. For example, the work vehicle according to the present disclosure may be an agricultural machine, a construction machine, a utility vehicle, etc. other than a tractor.

[0023] The directions of the work vehicle 10 of the present disclosure are defined. The direction in which the work vehicle 10 moves forward is defined as the front, the direction in which the work vehicle 10 moves backward is defined as the rear, the left side when the work vehicle 10 faces forward is defined as the left, and the right side when the work vehicle 10 faces forward is defined as the right. The front-rear direction of the work vehicle 10 is defined as the vehicle front-rear direction. The left-right direction orthogonal to the vehicle front-rear direction is defined as the vehicle width direction. The direction orthogonal to both the vehicle front-rear direction and the vehicle width direction is defined as the vertical direction. The vertical direction is also called the height direction. In each figure, an orthogonal three-dimensional coordinate is shown. The front direction is indicated by arrow X1, and the rear direction is indicated by arrow X2. The left direction is indicated by arrow Y1, and the right direction is indicated by arrow Y2. The upward direction is indicated by arrow Z1, and the downward direction is indicated by arrow Z2.

[0024] The work vehicle 10 shown in FIG. 1 includes a vehicle body 11, a traveling device 12 that supports the vehicle body 11 so as to be capable of traveling, a driver's seat 15, a cabin 16, a tank unit 21 having a tank 13 for storing fuel, and a drive device 14 driven by the fuel stored in the tank 13. The fuel is a liquid or a gas, and for example, hydrogen, methane, carbon monoxide (CO), etc. In the present embodiment, the tank 13 stores hydrogen gas. The work vehicle 10 of the present embodiment is a fuel cell vehicle (FCV; Fuel Cell Vehicle), and travels using the electric power generated by a fuel cell (fuel cell module) 24 using hydrogen and oxygen. The fuel cell 24 may generate electric power using methane or carbon monoxide (CO) as fuel.

[0025] The drive device 14 includes a fuel cell 24, a battery unit 30, and an electric motor 31. The battery unit 30 has a battery 300 that stores the electric power generated by the fuel cell 24. The motor 31 is driven by the electric power stored in the battery 300. The work vehicle 10 includes a pipe for hydrogen gas (hydrogen pipe) 22 and a filling portion 25 (see FIG. 3). The filling portion 25 has a filling port (receptacle) 26 that connects to a filling nozzle of a hydrogen gas supply machine (not shown) that is separate from the work vehicle 10. Hydrogen gas is supplied from the filling port 26 and is supplied to the tank 13 through the pipe 22 (rear pipe 22r). The hydrogen gas in the tank 13 is supplied to the fuel cell 24 through the pipe 22 (front pipe 22f).

[0026] The work vehicle 10 (see FIG. 1) includes a mounting frame 17 and a support frame 37. The mounting frame 17 is a frame for mounting the tank unit 21 (tank 13) on the vehicle body 11. The support frame 37 is a frame for supporting the battery unit 30 on the vehicle body 11. The specific configurations of the mounting frame 17 and the support frame 37 will be described later. The work vehicle 10 (see FIG. 7) includes a discharge path 35. The discharge path 35 discharges water or water vapor generated by the power generation of the fuel cell 24 to the outside.

[0027] 〔Vehicle body〕 The vehicle body 11 has a chassis 41, a bonnet 34, a front cover 111, and a fender 47. The fender 47 covers the rear wheel 122 from above. The chassis 41 supports the traveling device 12, the drive device 14, and the cabin 16. FIG. 8 is a perspective view showing a part of the work vehicle 10 shown in FIG. 1 disassembled. The chassis 41 is located at the center in the vehicle width direction and has a long shape in the vehicle longitudinal direction. The chassis 41 has a front frame 32 that constitutes the front portion of the chassis 41, a gear case 33 that constitutes the rear portion of the chassis 41, and a first cross frame 45 and a second cross frame 46 that extend in the vehicle width direction.

[0028] The front frame 32, the first horizontal frame 45, and the second horizontal frame 46 are configured by combining frame materials made of metal or the like. The front frame 32 mounts the motor 31. The first horizontal frame 45 is fixed to the front frame 32 behind the front wheel 121. The second horizontal frame 46 is fixed to the front frame 32 in front of the front wheel 121. Both ends in the vehicle width direction of each of the first horizontal frame 45 and the second horizontal frame 46 extend outward in the vehicle width direction from the front frame 32 (see FIG. 7).

[0029] The gear case 33 is configured to have a box body made of metal. The gear case 33 is coupled to the rear part of the front frame 32, and the gear case 33 and the front frame 32 form the skeleton of the vehicle body 11. The gear case 33 has a power transmission mechanism such as a transmission, a clutch, and a differential gear inside. The power transmission mechanism decelerates or accelerates the rotation of the output shaft of the motor 31 and outputs it to the traveling device 12 (one or both of the front wheel 121 and the rear wheel 122).

[0030] The power transmission mechanism outputs a part of the power of the motor 31 to the PTO shaft 334 (see FIG. 3). The PTO shaft 334 is an output shaft provided at the rear part of the gear case 33. The work vehicle 10 includes a coupling device 43 for coupling another device behind the vehicle body 11. The PTO shaft 334 transmits the power of the motor 31 to the above-mentioned another device coupled to the coupling device 43. The above-mentioned another device is a work device (not shown), and is also called an implement. The work device operates by the power of the motor 31. The work device is, for example, a tillage machine or the like.

[0031] FIG. 9 is a right side view of the work vehicle 10, showing a state in which a part of the bonnet 34, the front cover 111, and the tank case 211 of the tank unit 21 is removed. In order from the front of the vehicle, the first radiator 48, the fuel cell 24, and the second radiator 49 are arranged in this order and mounted on the chassis 41. As shown in FIGS. 4 and 9, the bonnet 34 and the front cover 111 cover the components mounted in the front part of the vehicle body 11. The bonnet 34 covers the fuel cell 24 and the first radiator 48 from above and from both sides in the vehicle width direction. The front cover 111 covers the second radiator 49 located behind the fuel cell 24 from above and from both sides in the vehicle width direction.

[0032] The upper surface 48a of the first radiator 48 is lower than the upper surface 24a of the fuel cell 24. The upper surface 24a of the fuel cell 24 is lower than the upper surface 49a of the second radiator 49. The upper surface 111a of the front cover 111 is higher than the upper surface 34a of the bonnet 34, but lower than the upper end of the steering wheel 151 that an operator sitting in the driver's seat 15 operates for steering. The upper surface 34a of the bonnet 34 becomes lower as it goes forward. Therefore, it is difficult to obstruct the view for the operator sitting in the driver's seat 15.

[0033] 〔Driver's Seat and Cabin〕 The driver's seat 15 and the cabin 16 are provided on the chassis 41 at a position closer to the rear (see FIG. 1). The cabin 16 has the driver's seat 15 and the steering wheel 151 inside. The cabin 16 has a front pillar 162 located in front of the driver's seat 15, a rear pillar 163 located behind the driver's seat 15, and a roof 164 located above the driver's seat 15. The front pillar 162 is provided at the left front and the right front of the driver's seat 15. The rear pillar 163 is provided at the left rear and the right rear of the driver's seat 15. The roof 164 is supported by the front pillar 162 and the rear pillar 163.

[0034] The cab 16 has a transparent front glass 165 located in front of the driver's seat 15 and transparent side glasses 166 located on both the left and right sides of the driver's seat 15. The front glass 165 is provided between the left and right front pillars 162. The side glass 166 is provided between the front pillar 162 and the rear pillar 163. The front glass 165 and the side glass 166 are each provided over the entire length from the ceiling to the floor surface of the cab 16. The side glass 166 is openable and functions as a door for an operator to enter and exit the cab 16.

[0035] A step 167 is provided on one side (left side) in the vehicle width direction of the cab 16 (see FIG. 5). The step 167 is a member for an operator getting on and off the cab 16 to step on. In front of the cab 16, a front cover 111 and a bonnet 34 are provided. As shown in FIGS. 2 and 6, the dimensions in the vehicle width direction of each of the front cover 111 and the bonnet 34 are smaller than the dimensions in the vehicle width direction of the cab 16. The dimension in the vehicle width direction of the bonnet 34 is smaller than the dimension in the vehicle width direction of the front cover 111.

[0036] The work vehicle 10 of the present embodiment includes a cab 16, but may not include the cab 16. Instead of the cab 16, the work vehicle 10 may include a canopy or a rollover protective structure (ROPS). When the work vehicle 10 does not include the cab 16, the tank unit 21 is mounted on the mounting frame 17 and located above the driver's seat 15.

[0037] 〔Traveling device 12〕 The traveling device 12 has front wheels 121 and rear wheels 122 (see FIG. 6). The front wheels 121 are provided on the left and right at the front part of the vehicle body 11. The rear wheels 122 are provided on the left and right at the rear part of the vehicle body 11. The maximum dimension in the vehicle width direction of the left and right rear wheels 122 is larger than the maximum dimension in the vehicle width direction of the left and right front wheels 121. The maximum dimension in the vehicle width direction of the left and right rear wheels 122 is the maximum vehicle width dimension of the work vehicle 10. One or both of the front wheels 121 and the rear wheels 122 rotate by the power of the motor 31. One or both (drive wheels) of the front wheels 121 and the rear wheels 122 that rotate by the power of the motor 31 may be crawlers (endless tracks).

[0038] 〔Drive device〕 As described above, the drive device 14 is configured to include a fuel cell 24, a battery unit 30, and a motor 31. The fuel cell 24 is located on the chassis 41 in the front part of the vehicle body 11 (see FIG. 9). The motor 31 is located behind the fuel cell 24 (see FIG. 8). The battery unit 30 is disposed between the front wheels 121 and the rear wheels 122 on the outer side in the vehicle width direction of the vehicle body 11 (see FIG. 1). The rear part of the battery unit 30 is disposed below the cabin 16, and the front part of the battery unit 30 is disposed in front of the cabin 16.

[0039] The fuel cell 24 generates electricity using hydrogen gas supplied from the battery unit 30 as fuel, and obtains electric power for rotating the motor 31. The fuel cell 24 has a substantially rectangular box-shaped battery casing 241 and a fuel cell stack 242 provided inside the battery casing 241. The fuel cell stack 242 has a plurality of battery cells. The battery cell has a positive electrode and a negative electrode. The plurality of battery cells are in a stacked state. The electric power generated by each battery cell is aggregated and output to the battery unit 30.

[0040] The motor 31 has a rotating rotor and a stator having a plurality of coils. The output shaft of the motor 31 is connected to a power transmission mechanism in the gear case 33 (see FIG. 8). The motor 31 is located behind the fuel cell 24 and below the second radiator 49.

[0041] The battery unit 30 is mounted on a support frame 37 attached to the chassis 41 (see FIGS. 7 and 8). The support frame 37 is a frame structure and is located between the front wheel 121 and the rear wheel 122. The support frame 37 of the present embodiment has a plurality of fixed frame portions 38 extending outward in the vehicle width direction from the chassis 41, and a plurality of connecting frame portions 39 extending in the vehicle longitudinal direction and connecting the plurality of fixed frame portions 38.

[0042] The inner end in the vehicle width direction of each fixed frame portion 38 is fixed to the gear case 33. The plurality of connecting frame portions 39 connect the outer end portions, intermediate portions, and inner end portions in the vehicle width direction of the plurality of fixed frame portions 38, respectively. The upper surface of each fixed frame portion 38 between the two connecting frame portions 39 disposed at the outer end portion and the intermediate portion in the vehicle width direction is a mounting surface 38a on which the battery unit 30 is placed. The battery unit 30 is placed on the mounting surface 38a of each fixed frame portion 38 and is disposed on the outer side in the vehicle width direction of the vehicle body 11.

[0043] 〔Tank Unit〕 The tank unit 21 (see FIG. 9) includes a tank 13, a tank case 211 that houses the tank 13, and a valve unit 212. The tank 13 is a substantially cylindrical high-pressure container. The tank 13 is made of a fiber-reinforced resin or the like reinforced with carbon fiber or glass fiber. In the case of the present embodiment, three tanks 13 are fixed to the tank case 211 with the axial direction of the cylindrical portion parallel to the vehicle width direction. The number of tanks 13 is not limited to three.

[0044] The tank case 211 is a box body capable of housing one or a plurality of tanks 13. The tank case 211 has an opening / closing door 213 (see FIG. 1) on one or both sides in the vehicle width direction and opens in the vehicle width direction. The tank case 211 is installed above the roof 164 with a vertical interval from the roof 164. The tank case 211 is fixed to the upper frame portion 171 of the mounting frame 17. The tank case 211 is made of a metal such as aluminum or steel and protects the tank 13 from external thermal and physical influences.

[0045] The tank 13 is disposed above the cabin 16 (driver's seat 15). For this reason, in the vehicle body 11, there is a high degree of freedom in arranging the fuel cell 24, the filling portion 25, the motor 31, and the battery unit 30. When retrofitting a work vehicle with a conventional internal combustion engine into a work vehicle 10 having a fuel cell 24 and a motor 31 as in the present embodiment, it is not necessary to significantly change the arrangement configuration of each device.

[0046] The tank 13 is connected to the rear pipe 22r and the front pipe 22f via a valve unit 212 (see FIG. 9). The rear pipe 22r (see FIG. 3) is a gas introduction pipe that connects the hydrogen gas filling port 26 and the valve unit 212, and guides the hydrogen gas introduced into the filling port 26 to the tank 13. The front pipe 22f (see FIG. 2) is a gas outlet pipe that connects the fuel cell 24 and the valve unit 212, and guides the hydrogen gas stored in the tank 13 to the fuel cell 24. The tank 13 stores the hydrogen gas introduced from the outside of the vehicle through the filling port 26 and supplies it to the fuel cell 24. The valve unit 212 has an on-off valve, a pressure reducing valve, etc., adjusts the hydrogen gas stored in the tank 13 to a predetermined flow rate, and guides it to the fuel cell 24 through the front pipe 22f.

[0047] 〔Mounting Frame〕 As shown in FIGS. 1 and 8, the mounting frame 17 is a frame structure for mounting the tank 13 on the vehicle body 11. The mounting frame 17 of the present embodiment has an upper frame portion 171, a pair of front frame portions 172, a rear frame portion 173, and a pair of reinforcing frame portions 175. The upper frame portion 171 is formed in a rectangular frame shape and is located above the cabin 16. A tank case 211 is attached to the upper frame portion 171. That is, the upper frame portion 171 supports the tank 13 via the tank case 211. The upper frame portion 171 is supported by the front frame portion 172, the rear frame portion 173, and the reinforcing frame portion 175.

[0048] A pair of front frame parts 172 extend vertically in front of the cabin 16 and on the outer sides in the vehicle width direction of the vehicle body 11. The upper ends of the pair of front frame parts 172 are respectively fixed to the left and right corner parts on the front side of the upper frame part 171. The lower ends of the pair of front frame parts 172 are respectively fixed to both ends in the vehicle width direction of the first cross frame 45 of the chassis 41. The rear frame part 173 is located behind the cabin 16. The rear frame part 173 is formed in a lattice shape by a plurality of frame members. The upper ends of the rear frame part 173 are respectively fixed to the left and right corner parts on the rear side of the upper frame part 171. The lower end of the rear frame part 173 is fixed to the chassis 41. A filling part 25 is provided in the rear frame part 173 (see FIG. 3).

[0049] A pair of reinforcing frame parts 175 are reinforcing members for receiving the inertial force that the upper frame part 171 and the tank case 211 tend to move forward when the working vehicle 10 stops during traveling. The pair of reinforcing frame parts 175 are located in front of the front frame part 172 and on both sides in the vehicle width direction of the bonnet 34. The upper ends of the pair of reinforcing frame parts 175 are respectively fixed to the left and right corner parts on the front side of the upper frame part 171. The lower ends of the pair of reinforcing frame parts 175 are respectively fixed to both ends in the vehicle width direction of the second cross frame 46 of the chassis 41 (see FIG. 2).

[0050] 〔Inverter and Voltage Converter〕 The working vehicle 10 (see FIG. 5) includes an inverter 81, a first voltage converter 82, and a second voltage converter 83. The inverter 81 is located in the vicinity of the inner side in the vehicle width direction of the left rear wheel 122. The inverter 81 is attached to the chassis 41.

[0051] The first voltage converter 82 and the second voltage converter 83 are located inside the inverter 81 in the vehicle width direction and outside the chassis 41 in the vehicle width direction. The first voltage converter 82 and the second voltage converter 83 are attached to the chassis 41 in a vertically arranged state. In the case of the present embodiment, the first voltage converter 82 is located above, and the second voltage converter 83 is located below. The first voltage converter 82 is, for example, a 12V DC / DC converter. The second voltage converter 83 is, for example, a 24V DC / DC converter.

[0052] 〔Radiator〕 The work vehicle 10 (see FIGS. 4 and 5) includes a cooling system that cools the fuel cell 24, the motor 31, the inverter 81, the voltage converters 82 and 83, etc. with a coolant. As a part of the cooling system, the work vehicle 10 includes a first radiator 48 and a second radiator 49. As shown in FIG. 9, the first radiator 48 is located in front of the fuel cell 24, and the second radiator 49 is located behind the fuel cell 24.

[0053] The first radiator 48 is a radiator for cooling devices other than the fuel cell 24. The second radiator 49 is a radiator for cooling the fuel cell 24. The first radiator 48 is connected to electrical components (heat generating components) that require cooling of the motor 31, the inverter 81, and the voltage converters 82 and 83 via a first cooling flow path (not shown) having a circulation pump. The first radiator 48 cools the coolant supplied through the first cooling flow path by heat exchange with the external air. The second radiator 49 is connected to the fuel cell 24 via a second cooling flow path (not shown) having a circulation pump. The second radiator 49 cools the coolant supplied through the second cooling flow path by heat exchange with the external air.

[0054] The first radiator 48 has a first fan 481. The second radiator 49 has a second fan 491. By rotating, the first fan 481 and the second fan 491 pass air through the first radiator 48 and the second radiator 49, promoting heat exchange with the coolant.

[0055] 〔Battery Unit〕 The battery unit 30 stores electric power to be supplied to the motor 31. The battery unit 30 (see FIG. 9) has a battery (battery pack) 300 and a battery housing 301 that houses the battery 300. The battery 300 temporarily stores the electric power generated by the fuel cell 24 and outputs the stored electric power to electrical components such as the motor 31. The battery 300 is composed of a plurality of battery cells. The battery 300 is a rechargeable secondary battery such as a lithium-ion battery or a lead-acid battery. The battery housing 301 has a rectangular parallelepiped shape that is long in the vehicle width direction. The lower surface of the battery housing 301 is fixed in a state of being placed on the mounting surface 38a (see FIG. 8) of the support frame 37.

[0056] 〔Electrical System〕 The work vehicle 10 (see FIG. 9) is provided with a relay junction 50. The relay junction 50 is an electrical connection box for relaying and distributing the electric power output from the battery unit 30. The fuel cell 24 is connected to an inverter 81 (see FIG. 5) via a boost circuit (not shown). The battery unit 30 is connected to the inverter 81 through the relay junction 50. The inverter 81 is electrically connected to the motor 31. The inverter 81 converts the DC power output from the boost circuit into three-phase AC power and outputs the three-phase AC power to the motor 31.

[0057] The battery unit 30 is connected to a first voltage converter 82 and a second voltage converter 83 respectively through the relay junction 50. The first voltage converter 82 and the second voltage converter 83 constitute a buck circuit that steps down the electric power input from the battery unit 30.

[0058] The work vehicle 10 is provided with low-voltage electrical components that operate at a voltage lower than that of the motor 31. In the case of this embodiment, the low-voltage electrical components are the radiators 48, 49, and an air conditioner (not shown), etc. The low-voltage electrical components are supplied with power stepped down by a step-down circuit (voltage converters 82, 83 or the 12V battery) through the relay junction 50.

[0059] 〔Relay Junction〕 The relay junction 50 (see FIGS. 1, 4, and 6) is disposed on the battery unit 30 (see FIG. 4). The battery unit 30 is disposed between the first lateral frame 45 (front frame portion 172) and the rear wheel 122 on the right side of the vehicle body 11 while being mounted on the support frame 37 as described above. A part of the battery unit 30 is disposed so as to protrude under the lower right of the cabin 16. The other part of the battery unit 30 protrudes to the right side of the cabin 16 (see FIG. 6) and also protrudes to the front side of the cabin 16 (see FIG. 4).

[0060] The relay junction 50 is placed on the front side above the battery unit 30 so as not to protrude from both sides in the vehicle width direction and forward from the battery unit 30. The relay junction 50 of this embodiment is disposed in front of the cabin 16 and behind the front frame portion 172 on the front side above the battery unit 30. Also, the relay junction 50 of this embodiment is disposed at the right rear of the bonnet 34 and at the lower right side of the front cover 111.

[0061] FIG. 10 is a perspective view seen from the lower right front inside the cabin 16. As shown in FIG. 10, the relay junction 50 is placed above the battery unit 30, in front of the windshield 165, and protrudes to the right of the right side glass 166. The lower right end of the windshield 165 where the relay junction 50 is disposed reaches to the bottom 168 of the cabin 16 or a position close to the bottom 168. The lower front end of the right side glass 166 where the relay junction 50 is disposed reaches to the bottom 168 of the cabin 16 or a position close to the bottom 168. Thereby, the relay junction 50 (especially the cover 70 described later) is disposed at a position visible from the driver's seat 15 in the cabin 16 through the windshield 165 and through the side glass 166.

[0062] The front cover 111 (see FIGS. 1, 4, and 6) is disposed on a pair of front frame portions 172 in front of the windshield 165 of the cabin 16. The front cover 111 is disposed at a height position in the middle in the vertical direction of the front frame portion 172 in side view. The lower right end of the front cover 111 is disposed above the relay junction 50. That is, the relay junction 50 is disposed between the front cover 111 and the battery unit 30 in the vertical direction in right side view.

[0063] The bonnet 34 is disposed on the vehicle body 11 in front of the front cover 111. The right rear end of the bonnet 34 is disposed in front of the relay junction 50. That is, the relay junction 50 is disposed between the windshield 165 of the cabin 16 and the bonnet 34 in the vehicle front-rear direction in right side view.

[0064] FIG. 11 is a perspective view of the relay junction 50 as viewed from the outside and rear in the vehicle width direction. FIG. 12 is a perspective view of the relay junction 50 as viewed from the inside and rear in the vehicle width direction. As shown in FIGS. 11 and 12, the relay junction 50 includes a first junction 51, a second junction 56, and a cover 70. The cover 70 covers the first junction 51 and the second junction 56.

[0065] 〔First Junction〕 FIG. 13 is a perspective view of the first junction 51 and the second junction 56 as viewed from the inside and front in the vehicle width direction with the cover 70 removed. FIG. 14 is a perspective view of the first junction 51 as viewed from the outside and front in the vehicle width direction with the cover 70 removed. As shown in FIGS. 13 and 14, the first junction 51 has an equipment case 52 that houses equipment (not shown), and a plurality of first external terminals 53 provided outside the equipment case 52.

[0066] The equipment case 52 is disposed on the upper surface of the battery housing 301 and in front of the cabin 16 (see FIG. 1). The equipment case 52 of the present embodiment is fixed to the upper surface 302 in a state of being disposed at the center in the vehicle width direction on the front side of the upper surface 302 of the battery housing 301. The equipment case 52 has a rectangular parallelepiped shape that is long in the vehicle width direction. The internal space of the equipment case 52 communicates with the internal space of the battery housing 301.

[0067] The plurality of first external terminals 53 includes two first connectors 531 and 532 for inputting or outputting power, a service plug 533, and a voltage detector 534. The plurality of first external terminals 53 of the present embodiment includes, as two first connectors, a fuel cell connector 531 and an inverter connector 532. The fuel cell connector 531 and the inverter connector 532 are provided on the upper side of the equipment case 52. The service plug 533 and the voltage detector 534 are provided on the outside in the vehicle width direction of the equipment case 52.

[0068] The fuel cell connector 531 is a connector to which the electric power generated by the fuel cell 24 is input. The fuel cell connector 531 is fixed to the upper surface 52a of the equipment case 52. The fuel cell connector 531 has a connection port (first connection port) 531a to which one end of the cable 85 is connected. The connection port 531a opens toward the inner side in the vehicle width direction. The other end of the cable 85 is connected to the fuel cell 24.

[0069] The inverter connector 532 is a connector that outputs electric power to the inverter 81. The inverter connector 532 is approximately the same size as the fuel cell connector 531. The inverter connector 532 is fixed to the upper surface 52a of the equipment case 52. The inverter connector 532 has a connection port (first connection port) 532a to which one end of the cable 86 is connected. The connection port 532a opens toward the inner side in the vehicle width direction. The other end of the cable 86 is connected to the inverter 81.

[0070] The fuel cell connector 531 is disposed behind the upper surface 52a of the equipment case 52. The inverter connector 532 is disposed in front of the fuel cell connector 531 on the upper surface 52a of the equipment case 52. That is, the fuel cell connector 531 and the inverter connector 532 are displaced in the vehicle front-rear direction on the upper surface 52a of the equipment case 52. Since the fuel cell connector 531 and the inverter connector 532, which are the first connectors, are disposed on the upper surface 52a of the equipment case 52, they are disposed above the low-voltage connector 571 and the high-voltage connector 572, which are the second connectors described later.

[0071] The first junction 51 further includes a support base 54 fixed to the upper surface 52a of the equipment case 52, and a pair of clips 55 provided on the support base 54. The support base 54 is disposed on the inner side in the vehicle width direction than the fuel cell connector 531 and the inverter connector 532. The support base 54 extends in the vehicle front-rear direction. The pair of clips 55 are fixed at intervals in the vehicle front-rear direction above the support base 54.

[0072] One clip 55 is configured to clamp the outer periphery of a cable 85 connected to a fuel cell connector 531. The other clip 55 is configured to clamp the outer periphery of a cable 86 connected to an inverter connector 532. Thus, the cables 85 and 86 connected to the connectors 531 and 532 are fixed to the equipment case 52 via a pair of clips 55 and a support base 54.

[0073] The service plug 533 is provided on the outer side surface 52b in the vehicle width direction of the equipment case 52 so as to be disposed in the vicinity of an opening / closing door 72 (see FIG. 11) described later. The service plug 533 has a base body 533a and a plug 533b detachably attached to the base body 533a. The base body 533a is disposed inside the equipment case 52 and fixed to the inner surface of the equipment case 52 (the surface opposite to the side surface 52b). The plug 533b is exposed to the outside in the vehicle width direction from the side surface 52b of the equipment case 52 in a state of being attached to the base body 533a.

[0074] A part of the power path (wiring) connected to the battery unit 30 is provided so as to pass through the inside of the base body 533a and the plug 533b of the service plug 533. When the plug 533b is removed from the base body 533a, the power path is physically interrupted. Thus, an operator can safely perform maintenance work or the like by removing the plug 533b from the base body 533a to interrupt the power path.

[0075] The power inspection unit 534 is provided on the side surface 52b of the equipment case 52 so as to be disposed in the vicinity of an opening / closing door 72 (see FIG. 11) described later. The power inspection unit 534 is disposed in front of the service plug 533 on the side surface 52b of the equipment case 52. The power inspection unit 534 is configured to confirm the energization of the power path, for example, when the power path is interrupted or energized by the service plug 533. The power inspection unit 534 of the present embodiment has a pair of terminals 534a for measuring voltage. Each terminal 534a is exposed to the outside in the vehicle width direction from the side surface 52b of the equipment case 52.

[0076] 〔Second Junction〕 The second junction 56 is arranged inside in the vehicle width direction than the first junction 51. The second junction 56 has a plurality of second external terminals 57 arranged on the battery unit 30. The plurality of second external terminals 57 includes two second connectors 571, 572 to which power is output, and an electrical component connector 573. The plurality of second external terminals 57 in the present embodiment includes a low voltage connector 571 and a high voltage connector 572 as two second connectors.

[0077] The low voltage connector 571 is a connector that outputs power to the first voltage converter 82. The low voltage connector 571 is smaller than the fuel cell connector 531 and the inverter connector 532. The low voltage connector 571 is fixed to the upper surface 302 of the battery housing 301. The low voltage connector 571 has a connection port (second connection port) 571a to which one end of the cable 87 is connected. The connection port 571a opens inward in the vehicle width direction. The other end of the cable 87 is connected to the first voltage converter 82.

[0078] The high voltage connector 572 is a connector that outputs power to the second voltage converter 83. The high voltage connector 572 has the same size as the low voltage connector 571. The high voltage connector 572 is fixed to the upper surface 302 of the battery housing 301. The high voltage connector 572 has a connection port (second connection port) 572a to which one end of the cable 88 is connected. The connection port 572a opens inward in the vehicle width direction. The other end of the cable 88 is connected to the second voltage converter 83.

[0079] The low voltage connector 571 is arranged behind the high voltage connector 572 on the upper surface 302 of the battery housing 301. That is, the low voltage connector 571 and the high voltage connector 572 are arranged offset in the vertical direction on the upper surface 302 of the battery housing 301.

[0080] The electrical component connector 573 is a connector that outputs power to low-voltage electrical components. The electrical component connector 573 is fixed to the upper surface 302 of the battery housing 301. The electrical component connector 573 is arranged in front of the high-voltage connector 572 on the upper surface 302 of the battery housing 301. The electrical component connector 573 has a connection port 573a to which one end of a power line (not shown) is connected. The connection port 573a opens backward. The other end of the power line is connected to a low-voltage electrical component.

[0081] The second junction 56 further includes a support base 58 fixed to the upper surface 302 of the battery housing 301, and a plurality (here, three) of clips 59 provided on the support base 58. The support base 58 is arranged inside in the vehicle width direction than the low-voltage connector 571, the high-voltage connector 572, and the electrical component connector 573. The support base 58 extends in the vehicle front-rear direction. The plurality of clips 59 are fixed at intervals in the vehicle front-rear direction above the support base 58.

[0082] One clip 59 is configured to clamp the outer periphery of the cable 87 connected to the low-voltage connector 571. Another one clip 59 is configured to clamp the outer periphery of the cable 88 connected to the high-voltage connector 572. The remaining one clip 59 is configured to clamp the outer periphery of the power line connected to the electrical component connector 573. Thereby, the cables 87, 88 and the power line connected to the respective connectors 571, 572, 573 are fixed to the battery housing 301 via the plurality of clips 59 and the support base 58.

[0083] 〔Cover〕 As shown in FIGS. 11 and 12, the cover 70 has a cover body 71 and an opening / closing door 72 provided on the cover body 71. The cover body 71 is formed so as to cover the equipment case 52 of the first junction 51, all the first external terminals 53, and all the second external terminals 57 of the second junction 56. An opening 715 is formed inside the cover body 71 in the vehicle width direction. Cables 85 to 88 and power lines respectively connected to the connection ports 531a, 532a, 571a, 572a, 573a of the connectors 531, 532, 571, 572, 573 are drawn out from the opening 715 of the cover body 71 to the vehicle body 11 side.

[0084] The cover body 71 is formed in a substantially trapezoidal shape in a side view in the vehicle width direction. The cover body 71 has a front wall 711, a rear wall 712, an upper wall 713, and side walls 714. The front wall 711 is disposed slightly in front of the front surface 303 of the battery housing 301 and extends in the vehicle width direction. The lower portion 711a of the front wall 711 is disposed opposite to the upper portion of the front surface 303 of the battery housing 301. The upper portion 711b of the front wall 711 is inclined so as to gradually move backward as it goes upward.

[0085] The rear wall 712 is disposed behind the equipment case 52 and extends in the vehicle width direction. The upper portion 712b of the rear wall 712 is inclined so as to gradually move forward as it goes upward. The upper wall 713 is disposed above the fuel cell connector 531 and the inverter connector 532 and extends in the vehicle width direction. Both end edges of the upper wall 713 in the vehicle longitudinal direction are connected to the upper end edge of the front wall 711 and the upper end edge of the rear wall 712.

[0086] FIG. 15 is a perspective view of the relay junction 50 as viewed from the outside and from the front in the vehicle width direction with the opening / closing door 72 of the cover 70 opened. In FIG. 15, the illustration of the opening / closing door 72 is omitted. As shown in FIG. 15, the side wall 714 of the cover body 71 is disposed outside the service plug 533 and the voltage detector 534 in the vehicle width direction and extends in the vehicle longitudinal direction. The height dimension of the side wall 714 is smaller than the height dimensions of the front wall 711 and the rear wall 712.

[0087] The height dimension of the side wall 714 of this embodiment is set to a dimension that allows access to the service plug 533 and the voltage detector 534 from the outer side in the vehicle width direction of the side wall 714. Both end edges of the side wall 714 in the vehicle longitudinal direction are connected to the lower end edges on the outer side in the vehicle width direction of the front wall 711 and the rear wall 712, respectively. As a result, an opening 716 is also formed on the outer side in the vehicle width direction of the cover body 71. This opening 716 is covered by the opening / closing door 72.

[0088] As shown in FIGS. 11, 12, and 15, the cover 70 further includes a first seal member 73 and a second seal member 74. The first seal member 73 is a member made of resin or rubber and is provided on the outer side in the vehicle width direction of the cover body 71. The first seal member 73 is fixed along the outer edges in the vehicle width direction of the front wall 711, the rear wall 712, and the upper wall 713, and the upper edge of the side wall 714. When the opening / closing door 72 is closed with respect to the cover body 71, the opening / closing door 72 comes into close contact with the first seal member 73. As a result, the first seal member 73 seals between the cover body 71 and the opening / closing door 72.

[0089] The second seal member 74 is a member made of resin or rubber and is provided below the cover body 71. The second seal member 74 is fixed along the lower edges of the rear wall 712 and the side wall 714. The lower end portion of the second seal member 74 is in close contact with the upper surface 302 of the battery housing 301. As a result, the second seal member 74 seals between the cover body 71 and the battery housing 301.

[0090] 〔Opening / Closing Door〕 FIG. 16 is a perspective view of the opening / closing door 72 shown in FIG. 11 as viewed from the inner side in the vehicle width direction. In FIGS. 11, 15, and 16, the opening / closing door 72 is provided on the outer side in the vehicle width direction of the cover body 71. The opening / closing door 72 includes a door body 721 and a plurality of flange plates 722, 723, 724, 725, 726 provided on the door body 721. The door body 721 is a flat plate member formed in a substantially trapezoidal shape similar to the shape of the cover body 71 in a side view. The door body 721 is formed to have a size that covers the opening 716 of the cover body 71 from the outer side in the vehicle width direction. A first seal member 73 is adapted to be in close contact with the inner surface 721a on the inner side in the vehicle width direction of the door body 721.

[0091] The flange plates 722, 723 project inward in the vehicle width direction from the front edge of the door body 721. The flange plates 724, 725 project inward in the vehicle width direction from the rear edge of the door body 721. The flange plate 726 projects inward in the vehicle width direction from the upper edge of the door body 721. In the state shown in FIG. 11, these flange plates 722 to 726 cover the outer sides in the vehicle width direction of the outer surfaces of the front wall 711, the rear wall 712, and the upper wall 713 of the cover body 71.

[0092] The flange plate 722 is supported by a pair of hinges 61 so as to be rotatable about a vertical axis with respect to the front wall 711 of the cover body 71. Thereby, the opening / closing door 72 is supported with respect to the cover body 71 so as to open and close the opening 716. When performing maintenance work or the like, an operator can access the service plug 533 and the voltage detector 534 from the outer side in the vehicle width direction of the cover body 71 by opening the opening / closing door 72.

[0093] The cover 70 further has an operating mechanism 75 for the operator to open and close the opening / closing door 72. The operating mechanism 75 includes a frame body 751 provided on the rear side of the door body 721, and a handle 752 rotatably provided with respect to the frame body 751. The frame body 751 is formed in a rectangular frame shape and is disposed so as to penetrate the door body 721 in the vehicle width direction. The handle 752 is formed in a rectangular plate shape. The handle 752 is disposed within the frame body 751 and is exposed to the outside in the vehicle width direction. The operator can open and close the opening / closing door 72 with respect to the frame body 751 by hooking a finger on the handle 752.

[0094] The cover 70 further has a locking mechanism 76 for locking the opening / closing door 72 in a closed state with respect to the cover body 71. The locking mechanism 76 includes a pair of hooks 761 provided on the operating mechanism 75, and a locking portion 762 provided on the cover body 71. The pair of hooks 761 are integrally provided with the handle 752 at intervals in the vertical direction on the back side (inner side in the vehicle width direction) of the handle 752. The pair of hooks 761 protrude inward in the vehicle width direction from the inner surface 721a of the door body 721. The pair of hooks 761 are rotatable with respect to the frame body 751 together with the handle 752.

[0095] The locking portion 762 is disposed within the cover body 71. The locking portion 762 has a bracket 762a fixed to the rear wall 712 and a shaft 762b fixed to the bracket 762a. The shaft 762b extends in the vertical direction at a position facing the pair of hooks 761, and both ends in the vertical direction thereof are fixed to the bracket 762a. When the pair of hooks 761 engage with the shaft 762b, the opening / closing door 72 is locked in a closed state. From this state, when the operator rotates the pair of hooks 761 together with the handle 752, the engagement between the pair of hooks 761 and the shaft 762b is released. Thereby, the locking of the opening / closing door 72 by the operating mechanism 75 is released.

[0096] 〔Operation and Effect of the Embodiment〕 According to the work vehicle 10 of the present embodiment, since the first junction 51 (equipment case 52, first external terminal 53) and the second junction 56 (second external terminal 57) disposed on the battery unit 30 are covered by the cover 70, it is possible to suppress the adhesion of mud or the like to the first junction 51 and the second junction 56. As a result, the operator can efficiently perform the work of the electrical system.

[0097] The cover 70 has an opening / closing door 72 that can access the service plug 533 and the power inspection unit 534 covered by the cover body 71. Thereby, by opening the opening / closing door 72, it is possible to easily access the service plug 533 and the power inspection unit 534, so that the work of the electrical system can be performed more efficiently. Specifically, it is possible to easily cut off the power path by the service plug 533. Also, it is possible to easily confirm the energization of the power path by the power inspection unit 534.

[0098] The first connectors 531, 532 of the first external terminal 53 and the second connectors 571, 572 of the second external terminal 67 are arranged at different positions in the vertical direction. Thereby, it becomes easier to connect the cables 85 to 88 to the first connectors 531, 532 and the second connectors 571, 572 respectively, so that the work of the electrical system can be performed more efficiently.

[0099] The first connection ports 531a, 532a of the first connectors 531, 532 and the second connection ports 571a, 572a of the second connectors 571, 572 are each open toward the inside in the vehicle width direction. Thereby, the cables 85 to 88 connected to the first connection ports 531a, 532a and the second connection ports 571a, 572a can be drawn out toward the inside in the vehicle width direction. As a result, the wiring length of each of the cables 85 to 88 can be made shorter than when each of the cables 85 to 88 is drawn out toward the outside in the vehicle width direction.

[0100] Since the cover 70 has an opening 715 on the inner side in the vehicle width direction, the cables 85 to 88 respectively connected to the connectors 531, 532, 571, and 572 can be easily drawn out from the opening 715 of the cover 70. Thereby, the work of the electrical system can be performed more efficiently.

[0101] The second connectors 571 and 572 arranged at a lower position are arranged on the inner side and the lower side in the vehicle width direction than the first connectors 531 and 532 arranged at a higher position. Thereby, it becomes easier to connect the cables 85 to 88 to the first connectors 531 and 532 and the second connectors 571 and 572 respectively, so that the work of the electrical system can be performed more efficiently.

[0102] The equipment case 52 is arranged in front of the cabin 16 above the battery unit 30. Thereby, the equipment case 52 can be arranged above the battery unit 30 without interfering with the cabin 16.

[0103] The cover 70 is arranged at a position where it can be visually recognized from the driver's seat 15 in the cabin 16 through the windshield 165 and through the side glass 166. Thereby, an operator sitting on the driver's seat 15 can easily visually recognize that the first junction 51 and the second junction 56 are covered with the cover 70 through the windshield 165 of the cabin 16.

[0104] 〔Others〕 The embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the rights of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope equivalent to the configuration described in the claims.

[0105] For example, if the relay junction 50 is above the battery unit 30, it may be arranged at a position other than the above-described embodiment. The cover 70 of the relay junction 50 only needs to cover at least the device case 52. The voltage detection unit 534 of the first junction 51 may be, for example, a display panel or the like that displays the measured voltage value, in addition to the above-described embodiment. The second connector of the second junction 56 is not limited to the low-voltage connector 571 and the high-voltage connector 572, and may be, for example, a connector to which power is input. The arrangements of the first external terminal 53 of the first junction 51 and the second external terminal 57 of the second junction 56 may be arranged at positions other than the above-described embodiment.

Explanation of Reference Numerals

[0106] 10 Work vehicle 11 Vehicle body 12 Travel device 13 Tank 14 Driving device 15 Driver's seat 16 Cabin 17 Mounting frame 21 Tank unit 22 Pipe 22f Front pipe 22r Rear pipe 24 Fuel cell 24a Upper surface 25 Filling part 26 Filling port 30 Battery unit 31 Motor 32 Front frame 33 Gear case 34 Bonnet 34a Upper surface 35 Discharge path 37 Support frame 38 Fixed frame part 38a Mounting surface 39 Connecting frame part 41 Chassis 43 Connecting device 45 First horizontal frame 46 Second horizontal frame 47 Fender 48 First radiator 48a Upper surface 49 Second radiator 49a Upper surface 50 Relay junction 51 First junction 52 Equipment case 52a Upper surface 52b Side surface 53 First external terminal 54 Support stand 55 Clip 56 Second junction 57 Second external terminal 58 Support stand 59 Clip 61 Hinge 70 Cover 71 Cover body 72 Opening / closing door 73 First seal member 74 Second seal member 75 Operating mechanism 76 Locking device 81 Inverter 82 First voltage converter 83 Second voltage converter 85 Cable 86 Cable 87 Cable 88 Cable 111 Front cover 111a Upper surface 121 Front wheel 122 Rear wheel 151 Steering 162 Front pillar 163 Rear pillar 164 Roof 165 Windshield 166 Side glass 167 Step 168 Bottom 171 Upper frame part 172 Front frame part 173 Rear frame part 175 Reinforcement frame part 211 Tank case 212 Valve unit 213 Opening / closing door 241 Battery casing 242 Fuel cell stack 300 Battery 301 Battery housing 302 Upper surface 303 Front surface 334 PTO shaft 481 First fan 491 Second fan 531 Fuel cell connector (first connector) 531a Connection port (first connection port) 532 Inverter connector (first connector) 532a Connection port (first connection port) 533 Service plug 533a Base 533b Plug 534 Voltage detection part 534a Terminal 571 Low-voltage connector (second connector) 571a Connection port (second connection port) 572 High-voltage connector (second connector) 572a Connection port (second connection port) 573 Electrical component connector 573a Connection port 711 Front wall 711a Lower part 711b Upper part 712 Rear wall 712b Upper part 713 Upper wall 714 Side wall 715 Opening 716 Opening 721 Door body 721a Inner surface 722 Flange plate 723 Flange plate 724 Flange plate 725 Flange plate 726 Flange plate 751 Frame 752 Handle 761 Hook 762 Locking part 762a Bracket 762b Shaft

Claims

1. A vehicle body, a fuel cell mounted on the vehicle body, a battery unit that stores the electric power generated by the fuel cell, a motor mounted on the vehicle body and driven by the electric power stored in the battery unit, an equipment case disposed on the battery unit, and a cover that covers the equipment case. A work vehicle comprising the above components.

2. Comprising a first external terminal provided outside the equipment case, wherein the cover, has a cover body that covers the equipment case and the first external terminal, and an opening / closing door provided on the cover body for accessing the first external terminal. The work vehicle according to claim 1.

3. A first junction having the equipment case and a first external terminal provided outside the equipment case, and a second junction having a second external terminal disposed on the battery unit. The work vehicle according to claim 1 or 2, wherein the cover covers the first junction and the second junction.

4. The first external terminal has a first connector for inputting or outputting electric power, the second external terminal has a second connector for inputting or outputting electric power, and the first connector is disposed above the second connector. The work vehicle according to claim 3.

5. The battery unit is disposed outside the vehicle body in the vehicle width direction, the first connector has a first connection port to which a corresponding cable is connected, the second connector has a second connection port to which a corresponding cable is connected, and the first connection port and the second connection port each open inward in the vehicle width direction. The work vehicle according to claim 4.

6. The cover has an opening for drawing out the cables respectively connected to the first connection port and the second connection port inside the vehicle width direction. The work vehicle according to claim 5.

7. The second junction is disposed inside the vehicle width direction of the first junction above the battery unit. The work vehicle according to claim 5.

8. The cover, has a cover body that covers the first junction and the second junction, and an opening / closing door provided outside the cover body in the vehicle width direction. The work vehicle according to claim 7.

9. The first external terminal has a service plug provided outside the equipment case in the vehicle width direction and for cutting off the power path. The work vehicle according to claim 8, wherein the service plug is disposed in the vicinity of the opening and closing door.

10. The first external terminal is provided outside the equipment case in the vehicle width direction and has an electrification inspection unit for checking the energization of the power path. The work vehicle according to claim 8, wherein the electrification inspection unit is disposed in the vicinity of the opening and closing door.

11. A driver's seat mounted on the vehicle body, A cabin having the driver's seat therein, And a traveling device having front wheels and rear wheels. The battery unit is disposed between the front wheels and the rear wheels outside the vehicle body in the vehicle width direction. The work vehicle according to claim 1 or 2, wherein the equipment case is disposed in front of the cabin above the battery unit.

12. The cabin has a windshield. The work vehicle according to claim 11, wherein the cover is disposed at a position where it can be visually recognized from the driver's seat through the windshield.

13. The cabin has side glasses. The work vehicle according to claim 11, wherein the cover is disposed at a position where it can be visually recognized from the driver's seat through the side glasses.

Images