WO2023074203A1 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- WO2023074203A1 WO2023074203A1 PCT/JP2022/035237 JP2022035237W WO2023074203A1 WO 2023074203 A1 WO2023074203 A1 WO 2023074203A1 JP 2022035237 W JP2022035237 W JP 2022035237W WO 2023074203 A1 WO2023074203 A1 WO 2023074203A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- battery
- dcdc converter
- vehicle body
- vehicle
- Prior art date
Links
- 239000000446 fuel Substances 0.000 claims abstract description 163
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 95
- 238000001816 cooling Methods 0.000 claims description 60
- 239000001257 hydrogen Substances 0.000 claims description 41
- 229910052739 hydrogen Inorganic materials 0.000 claims description 41
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 40
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 230000001012 protector Effects 0.000 claims description 15
- 230000006866 deterioration Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
Definitions
- the present invention relates to work vehicles.
- the present invention claims priority based on Japanese Patent Application No. 2021-177729 filed in Japan on October 29, 2021, the content of which is incorporated herein.
- Patent Document 1 discloses a driver's cab provided on a chassis, a working device provided on the chassis, an electric motor for driving the working device, and a fuel cell unit for generating electric power for driving the electric motor.
- a work vehicle is disclosed.
- the fuel cell unit is provided on the chassis behind the driver's cab and at the center in the front-rear direction of the vehicle.
- the fuel cell unit includes a fuel cell that generates electricity by supplying hydrogen and air, a blower that supplies air to the fuel cell, and a hydrogen tank that stores hydrogen to be supplied to the fuel cell.
- a DCDC converter is arranged on one side and a blower is arranged on the other side.
- Patent Document 2 discloses a fuel cell vehicle equipped with a fuel cell stack, a hydrogen tank, and a secondary battery mounted on a vehicle body frame.
- the fuel cell stack, the hydrogen tank, and the secondary battery are arranged in this order from the front side of the vehicle body.
- FC vehicle a fuel cell
- engine vehicle a conventional engine
- FC vehicles use light oil as fuel
- FC vehicles use hydrogen as fuel
- the weight of the hydrogen tank is light when compared with a full tank.
- FC vehicles use hydrogen as fuel
- the equipment installed in the FC vehicle is significantly different from that of the conventional engine vehicle, the weight of each device is also greatly different.
- the front-to-rear weight balance may deteriorate when the vehicle is empty (when no cargo is loaded), and the hill-climbing performance on soft road surfaces such as when it is raining may deteriorate.
- the vehicle becomes front heavy the front weight is excessive when the vehicle is empty
- the traction of the rear wheels which are the driving wheels, will decrease. Therefore, there is room for improvement in suppressing deterioration of the front-rear weight balance when the vehicle is empty.
- an object of the present invention is to provide a work vehicle capable of suppressing deterioration of the front-to-rear weight balance when the vehicle is empty.
- a work vehicle includes a fuel cell, a fuel cell DCDC converter that adjusts the voltage output by the fuel cell, a battery, a battery DCDC converter that adjusts the voltage output by the battery, a vehicle body supporting the battery and the DCDC converter for the battery; It is located in front of the vehicle.
- FIG. 1 is a perspective view of a work vehicle according to an embodiment
- FIG. 1 is a side view of a work vehicle according to an embodiment
- FIG. 1 is a top view of a work vehicle according to an embodiment
- FIG. 1 is a perspective view of a work vehicle according to an embodiment
- a dump truck which is a transport vehicle that travels in a work site such as a mine and transports a load
- the dump truck may be an unmanned dump truck that is driven unmanned without a driver's driving operation, or a manned dump truck that is driven based on a driver's driving operation.
- the dump truck 1 includes a vessel 2 (dump body), a vehicle body 3, and a travel device 4.
- the forward direction (vehicle forward direction), reverse direction (vehicle rearward direction), and vehicle width direction (vehicle lateral direction) of the dump truck 1 will be referred to as "vehicle front (one side in the longitudinal direction of the vehicle)” and “vehicle rearward (vehicle longitudinal direction other side).” )” and “vehicle width direction”.
- the vehicle width direction may also be referred to as "left side (one side in the vehicle width direction)" or "right side (other side in the vehicle width direction)".
- the right hand with respect to the direction in which the dump truck 1 moves forward is called the right side
- the left hand with respect to the direction in which the dump truck 1 moves forward is called the left side.
- the vertical direction of the dump truck 1 (vertical direction of the vehicle body), the upward direction of the vehicle (above the vehicle body) and the downward direction of the vehicle (below the vehicle body) are simply referred to as the "vertical direction", "above” and "below”.
- the dump truck 1 is arranged in a horizontal plane.
- the vertical direction of the dump truck 1 (vertical direction of the vehicle body), the upper direction of the vehicle (upper direction of the vehicle body), and the lower direction of the vehicle (lower direction of the vehicle body) are the vertical direction (vertical direction), the vertical direction, and the vertical direction when the dump truck 1 is placed on a horizontal plane. match each below.
- the vessel 2 is a member on which cargo is loaded. At least part of the vessel 2 is arranged above the vehicle body 3 . Vessel 2 is capable of dumping and lowering.
- the dumping operation means the operation of separating the vessel 2 from the vehicle body 3 and tilting it in the dumping direction.
- the dumping direction is the rear of the vehicle body 3 .
- the dumping operation includes raising the front end of vessel 2 to tilt vessel 2 backward. Due to the dumping operation, the loading surface of the vessel 2 is inclined downward toward the rear.
- a lowering operation means an operation to bring the vessel 2 closer to the vehicle body 3.
- the lowering action is the opposite direction of the dumping action.
- the lowering motion includes lowering the front end of vessel 2 .
- the vessel 2 is adjusted to the dumping attitude and the loading attitude by the dumping operation and the lowering operation.
- the dump posture means a posture in which the vessel 2 is raised.
- the loading posture means a posture in which the vessel 2 is lowered.
- the example in the figure shows the vessel 2 in a loading posture.
- the vessel 2 when carrying out earth removal work, the vessel 2 performs a dumping operation so as to change from the loading attitude to the dumping attitude.
- the cargo When the vessel 2 is loaded with cargo, the cargo is discharged rearward from the rear end of the vessel 2 by a dump operation.
- the vessel 2 is adjusted to the loading posture.
- the vessel 2 has a protector 5 that protects the cab 6 from above.
- the protector 5 is arranged to cover the operator's cab 6 from above when the vessel 2 is in the loading posture.
- the protector 5 is provided on the front end side of the vessel 2 .
- the protector 5 is arranged above the driver's cab 6 .
- the protector 5 extends in the width direction of the vehicle.
- the driver's cab 6 is arranged on the left side of the vehicle with respect to the center in the width direction of the vehicle.
- the cab 6 is supported by the platform 7.
- the platform 7 is provided to secure a foothold when the operator gets on and off the operator's cab 6 . Further, the platform 7 is provided to secure a foothold during maintenance of equipment mounted on the dump truck 1 .
- platform 7 may have a resistor (not shown) located thereon.
- the platform 7 is arranged below the protector 5 .
- Platform 7 is arranged above wheels 11 and 12 .
- the platform 7 extends in the width direction of the vehicle.
- the platform 7 is formed in a plate shape parallel to the vehicle front-rear direction and the vehicle width direction.
- the vehicle body 3 has a vehicle body frame 10 .
- the vehicle body frame 10 extends in the longitudinal direction of the vehicle.
- the vehicle body 3 supports the vessel 2 .
- the vehicle body 3 is supported by the travel device 4 .
- the traveling device 4 supports the vehicle body 3.
- the traveling device 4 causes the dump truck 1 to travel.
- the travel device 4 moves the dump truck 1 forward or backward. At least part of the travel device 4 is arranged below the vehicle body 3 .
- the travel device 4 has a plurality of wheels 11 and 12 .
- the plurality of wheels 11 and 12 include a front wheel 11 and a rear wheel 12 arranged behind the front wheel 11 .
- the front wheels 11 are steering wheels that are steered to change the traveling direction of the dump truck 1 .
- a pair of left and right front wheels 11 are arranged. As shown in FIG. 3 , the pair of left and right front wheels 11 are spaced apart in the width direction of the vehicle via the front portion of the vehicle body frame 10 .
- the front wheels 11 are provided one each on the left and right (two in total).
- the rear wheels 12 are drive wheels driven by a travel drive motor (not shown).
- a pair of left and right rear wheels 12 are arranged.
- the pair of left and right rear wheels 12 are spaced apart in the vehicle width direction via the rear portion of the vehicle body frame 10 .
- Two rear wheels 12 are provided on each side (four in total).
- the dump truck 1 includes a hydraulic oil tank 13 that stores hydraulic oil. 3, the hydraulic oil tank 13 has a circular shape.
- the hydraulic oil tank 13 is supported by the vehicle body frame 10 via a first bracket 15 .
- the hydraulic oil tank 13 is connected to a hydraulic pump (not shown).
- the fuel cell system 20 is mounted on the dump truck 1. As shown in FIG. In the example of FIG. 2, the components of the fuel cell system 20 are indicated by two-dot chain lines.
- the fuel cell system 20 includes a fuel cell 21 , a fuel cell DCDC converter 22 , a battery 23 , a battery DCDC converter 24 , a cooling device 25 and a hydrogen tank 26 .
- the fuel cell 21 , the fuel cell DCDC converter 22 , the battery 23 , the battery DCDC converter 24 , the cooling device 25 and the hydrogen tank 26 are supported by the vehicle body 3 .
- the fuel cell 21 generates electricity by chemically reacting hydrogen, which is a fuel gas, and oxygen, which is an oxidizing gas.
- the fuel cell 21 has a stack structure in which a plurality of unit cells are stacked. As viewed from the side in FIG. 2, the outer shape of the fuel cell 21 is rectangular. For example, the fuel cell 21 generates electricity using oxygen contained in the outside air.
- the fuel cell 21 may be supplied with oxygen-containing air from an oxidizing gas supply device (not shown).
- the fuel cell DCDC converter 22 adjusts the voltage output by the fuel cell 21 .
- the fuel cell DCDC converter 22 is electrically connected to the fuel cell 21 .
- the outer shape of the fuel cell DCDC converter 22 is rectangular.
- the fuel cell DCDC converter 22 boosts the voltage generated by the fuel cell 21 .
- the fuel cell DCDC converter 22 supplies the direct current generated by the fuel cell 21 to a motor inverter (not shown).
- the motor inverter converts the direct current from the DCDC converter 22 for the fuel cell into a three-phase alternating current and supplies it to each motor (for example, a pump drive motor and a travel drive motor (not shown)). Each of the pump drive motor and the travel drive motor is driven based on the three-phase alternating current supplied from the motor inverter.
- the pump drive motor drives a hydraulic pump (not shown). Hydraulic fluid discharged from the hydraulic pump is supplied to each of a steering cylinder (not shown) and a hoist cylinder (not shown).
- the steering cylinder generates power for steering the front wheels 11 .
- the hoist cylinders generate power for dumping or lowering the vessel 2 .
- the travel drive motor is connected to the rear wheels 12 of the travel device 4 . The rotational force generated by the travel drive motor is transmitted to the rear wheels 12 of the travel device 4 .
- the battery 23 stores the electric power generated in the fuel cell 21.
- FIG. The battery 23 supplies the stored electric power to each motor (for example, a pump drive motor and a travel drive motor).
- the battery 23 is a secondary battery such as a lithium ion battery.
- Battery 23 is supported by vehicle body frame 10 via second bracket 16 .
- battery 23 is heavier than fuel cell 21 .
- the external shape of the battery 23 is a rectangular shape having a longer vertical length than the fuel cell 21 .
- the battery 23 drives the travel drive motor when the dump truck 1 is started under the control of a control device (not shown).
- the battery 23 stores regenerated electric power during deceleration regeneration of the dump truck 1 .
- the battery 23 is charged by power supplied from the fuel cell 21 according to the load.
- the battery DCDC converter 24 adjusts the voltage output by the battery 23 .
- the battery DCDC converter 24 is electrically connected to the battery 23 .
- the battery DCDC converter 24 has a rectangular outer shape.
- the battery DCDC converter 24 boosts the voltage of the battery 23 .
- the battery DCDC converter 24 controls charging and discharging of the battery 23 so that the battery 23 can be integrated with the fuel cell 21 to supply power to the motor inverter.
- the battery 23 may serve as the main power source of the dump truck 1 and the fuel cell 21 may function to charge the battery 23 .
- the amount of fuel cells 21 to be mounted can be reduced.
- the control of the fuel cell 21 becomes easy.
- the cooling device 25 cools the fuel cell 21 .
- the cooling device 25 supplies coolant (eg, cooling water) to the fuel cell 21 to cool the fuel cell 21 .
- Cooling device 25 is connected to fuel cell 21 via a cooling pipe 27 through which a coolant passes.
- the outer shape of the cooling device 25 is rectangular with a longer vertical length than the fuel cell 21 .
- cooling device 25 may comprise a blower that supplies oxygen in the air to fuel cell 21 .
- the hydrogen tank 26 stores hydrogen to be supplied to the fuel cell 21.
- the hydrogen tank 26 has a rectangular shape having a longitudinal dimension in the front-rear direction.
- the fuel cell 21 is supplied with hydrogen from a hydrogen tank 26 by a hydrogen supply device (not shown).
- the fuel cell 21 generates electric power by causing an electrochemical reaction between hydrogen supplied from the hydrogen supply device and oxygen contained in the outside air.
- the cooling device 25 Since the cooling device 25 needs to take in outside air, it is arranged in the frontmost portion of the vehicle body among the components of the fuel cell system 20 .
- the cooling device 25 is arranged in front of the vehicle body relative to the fuel cell 21 .
- the cooling device 25 is arranged near the fuel cell 21 .
- a cooling pipe 27 extends from the rear portion of the cooling device 25 toward the fuel cell 21 . At least part of the vertical range of the cooling device 25 is arranged below the platform 7 .
- the fuel cell 21 is arranged in front of the vehicle body relative to the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24.
- the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24 are arranged at the center and rear of the vehicle body.
- a cooling device 25, a fuel cell 21, a fuel cell DCDC converter 22, a battery 23, and a battery DCDC converter 24 are arranged in this order from the front of the vehicle to the rear of the vehicle.
- the cooling device 25, the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are arranged on the vehicle body left-right center line CL.
- the cooling device 25, the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are preferably arranged so that their centers of gravity overlap with the vehicle body left-right center line CL. Thereby, the weight balance in the width direction of the vehicle can be improved.
- FIG. 3 illustration of the vessel 2, the hydrogen tank 26, etc. is omitted.
- the hydrogen tank 26 is mounted on the platform 7.
- the hydrogen tank 26 is arranged on the upper surface of the platform 7 on the right side of the operator's cab 6 (see FIG. 1).
- a hydrogen tank 26 is arranged between the platform 7 and the protector 5 .
- the battery 23 and the hydraulic oil tank 13 are arranged on opposite sides in the lateral direction of the vehicle body.
- the hydraulic oil tank 13 is arranged on the left side of the vehicle body lateral center line CL.
- the battery 23 is arranged on the right side of the vehicle body left-right center line CL.
- the battery 23 is arranged between the right front wheel 11 and the right rear wheel 12 .
- the battery 23 is arranged in a space surrounded by the right front wheel 11 , the right rear wheel 12 and the lower right portion of the vessel 2 .
- the cooling device 25 has a line-symmetrical shape with the vehicle body left-right center line CL as the axis of symmetry. As viewed from above in FIG. 3, the cooling device 25 has a rectangular shape having a longitudinal dimension in the vehicle width direction. The length of the cooling device 25 in the vehicle width direction is longer than the length of the fuel cell 21 in the vehicle width direction.
- the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 have substantially the same length in the vehicle width direction.
- the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are each rectangular.
- the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are arranged within a range of the cooling device 25 in the vehicle width direction.
- the fuel cell 21 , the fuel cell DCDC converter 22 and the battery DCDC converter 24 are mounted on the body frame 10 .
- the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are arranged within a range of the vehicle body frame 10 in the vehicle width direction.
- the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 are covered by the vehicle body frame 10 from below the vehicle body. Therefore, it is possible to suppress external disturbances (for example, flying stones, etc.) from reaching the fuel cell 21, the fuel cell DCDC converter 22, and the battery DCDC converter 24 from below the vehicle body.
- the cooling device 25 , fuel cell 21 , fuel cell DCDC converter 22 and battery 23 are arranged below the platform 7 .
- the fuel cell 21 and the fuel cell DCDC converter 22 overlap the front wheel 11 .
- the fuel cell 21 overlaps the front upper portion of the front wheel 11 .
- the fuel cell DCDC converter 22 overlaps the rear upper portion of the front wheel 11 .
- the fuel cell 21 and the fuel cell DCDC converter 22 are preferably arranged within a range of the front wheels 11 in the longitudinal direction of the vehicle.
- all of the fuel cell 21 and the fuel cell DCDC converter 22 are arranged radially inward of the front wheel 11 relative to the outer peripheral edge of the front wheel 11 in a side view of FIG.
- the fuel cell 21 and the fuel cell DCDC converter 22 are covered by the front wheels 11 from outside in the vehicle width direction. Stepping stones, etc.) can be suppressed from reaching.
- the battery 23 is arranged between the vessel 2 and the second bracket 16.
- the battery 23 has a rectangular shape longer than the fuel cell 21 in the vehicle width direction.
- the battery 23 is arranged inside the right end of the right front wheel 11 in the vehicle width direction. 3, the battery 23 is positioned inward in the vehicle width direction from the right end of the right rear wheel 12 (specifically, the right end of the right rear wheel 12 on the outer side in the vehicle width direction of the pair of right rear wheels 12). are placed.
- the battery 23 when viewed from above, is preferably arranged within the range of the vessel 2 in the vehicle width direction. For example, it is more preferable that the entire battery 23 is arranged on the vehicle width direction inner side of the vehicle width direction outer end of the vessel 2 when viewed from above. As a result, the battery 23 is covered with the vessel 2 from above the vehicle, so that it is possible to suppress external disturbances (such as rainwater) from reaching the battery 23 from above the vehicle.
- external disturbances such as rainwater
- the battery DCDC converter 24 is arranged between the vessel 2 and the vehicle body frame 10 . As viewed from the side in FIG. 2 , the battery DCDC converter 24 overlaps the upper portion of the rear wheel 12 . For example, in a side view of FIG. 2, it is preferable that the battery DCDC converter 24 is arranged within a range of the rear wheels 12 in the longitudinal direction of the vehicle.
- the entire battery DCDC converter 24 be arranged radially inward of the rear wheel 12 relative to the outer peripheral edge of the rear wheel 12 .
- the battery DCDC converter 24 is covered by the rear wheel 12 from the outside in the vehicle width direction, thereby suppressing external disturbances (such as stepping stones) from reaching the battery DCDC converter 24 from the outside in the vehicle width direction. be able to.
- the dump truck 1 of the present embodiment includes the fuel cell 21, the fuel cell DCDC converter 22 that adjusts the voltage output by the fuel cell 21, the battery 23, and the voltage output by the battery 23. and a vehicle body 3 that supports the fuel cell 21 , the fuel cell DCDC converter 22 , the battery 23 and the battery DCDC converter 24 .
- the fuel cell 21 is arranged in front of the vehicle body relative to the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24. As shown in FIG. According to this configuration, the fuel cell 21 is arranged in front of the vehicle body relative to the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24, so that the heavy battery 23 is located forward of the vehicle body relative to the fuel cell 21.
- the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24 are arranged at the center and rear of the vehicle body. According to this configuration, compared to the case where the heavy battery 23 and the DCDC converter are arranged in front of the vehicle body, front heavyness can be suppressed. Therefore, it is possible to more effectively suppress the deterioration of the front-rear weight balance when the vehicle is empty.
- the dump truck 1 further includes a cooling device 25 that cools the fuel cell 21 .
- the cooling device 25 is arranged in front of the vehicle body relative to the fuel cell 21 . According to this configuration, outside air can be taken in more easily than when the cooling device 25 is arranged behind the fuel cell 21 in the vehicle body. For example, when the dump truck 1 moves forward, outside air (for example, running wind) from the front of the vehicle can be taken directly into the cooling device 25 .
- the cooling device 25 is arranged near the fuel cell 21 .
- the length of the pipe connecting the cooling device 25 and the fuel cell 21 can be shortened as much as possible.
- the length of the cooling pipe 27 can be maximized by extending the cooling pipe 27 from the rear of the cooling device 25 toward the fuel cell 21. can be shortened.
- shortening the length of the cooling pipe 27 makes it easier to mount the cooling pipe 27 on the vehicle body 3 .
- the weight of the cooling pipe 27 can be reduced.
- the amount of refrigerant passing through the cooling pipe 27 is reduced, and maintenance costs can be reduced.
- the cooling device 25, the fuel cell 21, the fuel cell DCDC converter 22, the battery 23, and the battery DCDC converter 24 are arranged in this order from the front to the rear of the vehicle.
- the heavy battery 23 and the DCDC converter are arranged behind the vehicle body relative to the cooling device 25 and the fuel cell 21, so front heavyness can be suppressed. Therefore, it is possible to more effectively suppress the deterioration of the front-rear weight balance when the vehicle is empty.
- the dump truck 1 includes a hydrogen tank 26 that stores hydrogen to be supplied to the fuel cell 21, a protector 5 that protects the driver's cab 6 from above the vehicle body, and a platform 7 that is arranged below the vehicle body relative to the protector 5. And further comprising.
- a hydrogen tank 26 is mounted on the platform 7 . According to this configuration, a large amount of hydrogen tanks 26 can be mounted by utilizing the height direction of the vehicle up to the vicinity of the protector 5 .
- mounting the light hydrogen tank 26 on the platform 7 requires less strength than mounting the heavy battery 23 and DCDC converter on the platform 7 .
- the dump truck 1 further includes a hydraulic fluid tank 13 that stores hydraulic fluid.
- the battery 23 and the hydraulic oil tank 13 are arranged on opposite sides of each other in the lateral direction of the vehicle body. According to this configuration, compared to the case where the battery 23 and the hydraulic oil tank 13 are arranged on the same side in the left-right direction of the vehicle body, it is possible to suppress deterioration of left-right weight balance when the vehicle is empty.
- the dump truck further includes a cooling device that cools the fuel cell, and the cooling device is arranged in front of the vehicle body relative to the fuel cell.
- the cooling device may be arranged rearward of the vehicle body relative to the fuel cell.
- a dump truck may not have a cooling device.
- the arrangement of cooling devices can be changed according to the required specifications.
- the cooling device is arranged in the vicinity of the fuel cell, but the present invention is not limited to this.
- the cooling device does not have to be placed near the fuel cell.
- the cooling device may be located closer to the battery than the fuel cell.
- the arrangement of the cooling device and the fuel cell (arrangement interval of the cooling device with respect to the fuel cell) can be changed according to the required specifications.
- the cooling device, the fuel cell, the DCDC converter for the fuel cell, the battery, and the DCDC converter for the battery are arranged in this order from the front of the vehicle body to the rear of the vehicle body. do not have.
- the cooling device, the fuel cell, the DCDC converter for the fuel cell, the battery, and the DCDC converter for the battery do not have to be arranged in this order from the front to the rear of the vehicle body.
- the arrangement order of the fuel cell DCDC converter, the battery, and the battery DCDC converter may be reversed.
- the layout of the cooling device, the fuel cell, the DCDC converter for the fuel cell, the battery, and the DCDC converter for the battery can be changed according to the required specifications.
- the dump truck further comprises a hydrogen tank that stores hydrogen to be supplied to the fuel cell, a protector that protects the driver's cab from above the vehicle body, and a platform that is arranged below the vehicle body below the protector,
- the hydrogen tank has been described as being mounted on the platform, it is not limited to this.
- the hydrogen tank does not have to be mounted on the platform.
- hydrogen tanks may be mounted under the platform.
- the hydrogen tank may be mounted on the body frame.
- the mounting mode of the hydrogen tank can be changed according to the required specifications.
- the dump truck further includes a hydraulic oil tank that stores hydraulic oil, and the battery and the hydraulic oil tank are arranged on opposite sides in the left-right direction of the vehicle body.
- the battery and the hydraulic oil tank may be arranged on the same side in the lateral direction of the vehicle body.
- the arrangement of the battery and hydraulic oil tank can be changed according to the required specifications.
- a dump truck was used as an example of a work machine (work vehicle), but it is not limited to this.
- the present invention may be applied to other work vehicles such as excavators, bulldozers, and wheel loaders.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Fuel Cell (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
本発明は、2021年10月29日に、日本に出願された特願2021-177729号に基づき優先権を主張し、その内容をここに援用する。
特許文献2には、車体フレーム上に搭載された燃料電池スタック、水素タンク及び二次電池を備えた燃料電池車両が開示されている。特許文献2では、車体前側から燃料電池スタック、水素タンク、二次電池の順に配置されている。
図1に示すように、ダンプトラック1は、ベッセル2(ダンプボディ)と、車体3と、走行装置4と、を備える。以下、ダンプトラック1の前進方向(車体前方)、後進方向(車体後方)及び車両幅方向(車体左右方向)を「車両前方(車両前後方向一方側)」、「車両後方(車両前後方向他方側)」及び「車両幅方向」と称する。車両幅方向は、「左側(車両幅方向一方側)」又は「右側(車両幅方向他方側)」と称する場合もある。ダンプトラック1が前進する方向に対して右手を右側、ダンプトラック1が前進する方向に対して左手を左側と称する。ダンプトラック1の車両上下方向(車体上下方向)、車両上方(車体上方)及び車両下方(車体下方)を単に「上下方向」、「上方」及び「下方」と称する。図の例では、ダンプトラック1は、水平面に配置されている。ダンプトラック1の車両上下方向(車体上下方向)、車両上方(車体上方)及び車両下方(車体下方)は、ダンプトラック1が水平面に配置された状態の上下方向(鉛直方向)、鉛直上方及び鉛直下方とそれぞれ一致する。
図2に示すように、燃料電池システム20は、ダンプトラック1に搭載されている。図2の例では、燃料電池システム20の構成要素は二点鎖線で示している。燃料電池システム20は、燃料電池21と、燃料電池用DCDCコンバータ22と、バッテリ23と、バッテリ用DCDCコンバータ24と、冷却装置25と、水素タンク26と、を備える。燃料電池21、燃料電池用DCDCコンバータ22、バッテリ23、バッテリ用DCDCコンバータ24、冷却装置25及び水素タンク26は、車体3に支持されている。
冷却装置25は、外気を取り込む必要があるため、燃料電池システム20の構成要素のうち最も車体前方に配置されている。冷却装置25は、燃料電池21よりも車体前方に配置されている。冷却装置25は、燃料電池21の近傍に配置されている。冷却配管27は、冷却装置25の後部から燃料電池21に向けて延びている。冷却装置25において上下方向の範囲の少なくとも一部は、プラットフォーム7よりも下方に配置されている。
以上説明したように、本実施形態のダンプトラック1は、燃料電池21と、燃料電池21が出力する電圧を調整する燃料電池用DCDCコンバータ22と、バッテリ23と、バッテリ23が出力する電圧を調整するバッテリ用DCDCコンバータ24と、燃料電池21、燃料電池用DCDCコンバータ22、バッテリ23及びバッテリ用DCDCコンバータ24を支持する車体3と、を備える。燃料電池21は、燃料電池用DCDCコンバータ22、バッテリ23及びバッテリ用DCDCコンバータ24よりも車体前方に配置されている。
この構成によれば、燃料電池21が燃料電池用DCDCコンバータ22、バッテリ23及びバッテリ用DCDCコンバータ24よりも車体前方に配置されていることで、重量の重いバッテリ23が燃料電池21よりも車体前方に配置された場合と比較して、フロントヘビー(空車時の前部重量が過大)となることを抑制することができる。したがって、空車時の前後重量バランスの悪化を抑制することができる。
加えて、フロントヘビーを抑制することにより、駆動輪である後輪12のトラクションが下がることを抑制することができる。したがって、降雨時などの軟弱路面の登坂性能が悪化することを抑制することができる。
この構成によれば、重量の重いバッテリ23及びDCDCコンバータが車体前方に配置された場合と比較して、フロントヘビーとなることを抑制することができる。したがって、空車時の前後重量バランスの悪化をより効果的に抑制することができる。
この構成によれば、冷却装置25が燃料電池21よりも車体後方に配置された場合と比較して、外気を取り込み易い。例えば、ダンプトラック1が前進する際に、車両前方からの外気(例えば、走行風)を冷却装置25に直接取り込むことができる。
この構成によれば、冷却装置25と燃料電池21とを接続する配管の長さを可及的に短くすることができる。例えば、冷却装置25が冷却配管27を介して燃料電池21に接続されている場合、冷却配管27を冷却装置25の後部から燃料電池21に向けて延ばすことにより、冷却配管27の長さを最大限短くすることができる。
加えて、冷却配管27の長さ短縮により、冷却配管27を車体3に実装しやすくなる。加えて、冷却配管27の長さ短縮により、冷却配管27を軽量化することができる。加えて、冷却配管27の長さ短縮により、冷却配管27を通る冷媒の量が少なくなり、整備コストを低減することができる。
この構成によれば、重量の重いバッテリ23及びDCDCコンバータが冷却装置25及び燃料電池21よりも車体後方に配置されるため、フロントヘビーとなることを抑制することができる。したがって、空車時の前後重量バランスの悪化をより効果的に抑制することができる。
この構成によれば、プロテクタ5付近までの車両高さ方向を活用して水素タンク26を大量に搭載することができる。加えて、プラットフォーム7上に重量の重いバッテリ23及びDCDCコンバータを搭載するよりも、重量の軽い水素タンク26を搭載した方が、プラットフォーム7の必要な強度が小さくて済む。加えて、プラットフォーム7上は上部に遮蔽物が少ないため、水素タンク26から水素を放出する際、遮蔽物により水素が溜まる等のリスクを小さくすることができる。
この構成によれば、バッテリ23及び作動油タンク13が車体左右方向において互いに同じ側に配置された場合と比較して、空車時の左右重量バランスの悪化を抑制することができる。
上述した実施形態では、燃料電池用DCDCコンバータ、バッテリ及びバッテリ用DCDCコンバータが車体中央及び車体後方に配置されている例を挙げて説明したが、これに限らない。例えば、バッテリ及びDCDCコンバータは、車体前方に配置されていてもよい。例えば、燃料電池用DCDCコンバータ、バッテリ及びバッテリ用DCDCコンバータの配置態様は、要求仕様に応じて変更することができる。
Claims (7)
- 燃料電池と、
前記燃料電池が出力する電圧を調整する燃料電池用DCDCコンバータと、
バッテリと、
前記バッテリが出力する電圧を調整するバッテリ用DCDCコンバータと、
前記燃料電池、前記燃料電池用DCDCコンバータ、前記バッテリ及び前記バッテリ用DCDCコンバータを支持する車体と、を備え、
前記燃料電池は、前記燃料電池用DCDCコンバータ、前記バッテリ及び前記バッテリ用DCDCコンバータよりも車体前方に配置されている
作業車両。 - 前記燃料電池用DCDCコンバータ、前記バッテリ及び前記バッテリ用DCDCコンバータは、車体中央及び車体後方に配置されている
請求項1に記載の作業車両。 - 前記燃料電池を冷却する冷却装置を更に備え、
前記冷却装置は、前記燃料電池よりも車体前方に配置されている
請求項1又は2に記載の作業車両。 - 前記冷却装置は、前記燃料電池の近傍に配置されている
請求項3に記載の作業車両。 - 車体前方から車体後方に向けて、前記冷却装置、前記燃料電池、前記燃料電池用DCDCコンバータ、前記バッテリ、前記バッテリ用DCDCコンバータの順に配置されている
請求項4に記載の作業車両。 - 前記燃料電池へ供給する水素を貯留する水素タンクと、
運転室を車体上方から保護するプロテクタと、
前記プロテクタよりも車体下方に配置されたプラットフォームと、を更に備え、
前記水素タンクは、前記プラットフォームの上に搭載されている
請求項1から5の何れか一項に記載の作業車両。 - 作動油を貯留する作動油タンクを更に備え、
前記バッテリ及び前記作動油タンクは、車体左右方向において互いに反対側に配置されている
請求項1から6の何れか一項に記載の作業車両。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3231918A CA3231918A1 (en) | 2021-10-29 | 2022-09-21 | Work vehicle |
AU2022377516A AU2022377516A1 (en) | 2021-10-29 | 2022-09-21 | Work vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-177729 | 2021-10-29 | ||
JP2021177729A JP2023066883A (ja) | 2021-10-29 | 2021-10-29 | 作業車両 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023074203A1 true WO2023074203A1 (ja) | 2023-05-04 |
Family
ID=86159801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/035237 WO2023074203A1 (ja) | 2021-10-29 | 2022-09-21 | 作業車両 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2023066883A (ja) |
AU (1) | AU2022377516A1 (ja) |
CA (1) | CA3231918A1 (ja) |
WO (1) | WO2023074203A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004122972A (ja) * | 2002-10-03 | 2004-04-22 | Toyota Motor Corp | 自動車 |
CN113479130A (zh) * | 2021-07-29 | 2021-10-08 | 三一汽车制造有限公司 | 车辆和车辆的控制方法 |
-
2021
- 2021-10-29 JP JP2021177729A patent/JP2023066883A/ja active Pending
-
2022
- 2022-09-21 WO PCT/JP2022/035237 patent/WO2023074203A1/ja active Application Filing
- 2022-09-21 CA CA3231918A patent/CA3231918A1/en active Pending
- 2022-09-21 AU AU2022377516A patent/AU2022377516A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004122972A (ja) * | 2002-10-03 | 2004-04-22 | Toyota Motor Corp | 自動車 |
CN113479130A (zh) * | 2021-07-29 | 2021-10-08 | 三一汽车制造有限公司 | 车辆和车辆的控制方法 |
Also Published As
Publication number | Publication date |
---|---|
CA3231918A1 (en) | 2023-05-04 |
JP2023066883A (ja) | 2023-05-16 |
AU2022377516A1 (en) | 2024-04-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7042160B2 (ja) | 電動車両 | |
US10486514B2 (en) | Vehicle with distributed drive and power components | |
US10538157B2 (en) | Work vehicle | |
JP6667949B2 (ja) | 作業車両 | |
US8662239B2 (en) | Series-hybrid vehicle | |
JP6341221B2 (ja) | 燃料電池車両および燃料電池車両に対する動力モジュールの搭載方法 | |
KR102353924B1 (ko) | 수소연료전지 트랙터 | |
WO2012128195A1 (ja) | 電動式作業車両及びそのバッテリ保持構造 | |
US11180014B2 (en) | Vehicle having improved transmission of torque and suppression of rotation of driving device unit | |
CN114206671B (zh) | 自调平式单轴自卸卡车 | |
US10538166B2 (en) | Portable charger device, contactless charger system for electric work vehicle and electric grass mower machine | |
JPWO2012017935A1 (ja) | 車両の後部保護構造 | |
JP2012201187A (ja) | バッテリ駆動のホイールローダ | |
CN113891828B (zh) | 电动卡车用车架 | |
WO2023074203A1 (ja) | 作業車両 | |
CN115551740A (zh) | 电动作业车辆 | |
JP3679959B2 (ja) | フォークリフトの機器配置構造 | |
US20240157775A1 (en) | Work Vehicle | |
JP6183221B2 (ja) | インバータの車載構造 | |
US20240157818A1 (en) | Work Vehicle | |
CN215621426U (zh) | 纯电动牵引车 | |
JP7480818B1 (ja) | クレーン | |
WO2024090046A1 (ja) | クレーン | |
RU2797318C1 (ru) | Самовыравнивающийся одноосный самосвал | |
JP7461738B2 (ja) | 車両 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22886536 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3231918 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022377516 Country of ref document: AU Ref document number: AU2022377516 Country of ref document: AU |
|
ENP | Entry into the national phase |
Ref document number: 2022377516 Country of ref document: AU Date of ref document: 20220921 Kind code of ref document: A |