WO2023276471A1 - 電動作業車 - Google Patents

電動作業車 Download PDF

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Publication number
WO2023276471A1
WO2023276471A1 PCT/JP2022/020483 JP2022020483W WO2023276471A1 WO 2023276471 A1 WO2023276471 A1 WO 2023276471A1 JP 2022020483 W JP2022020483 W JP 2022020483W WO 2023276471 A1 WO2023276471 A1 WO 2023276471A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
support
supported
support portion
cover member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/020483
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
山口達也
尾畠法夫
森岡保光
三ツ井遥己
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to US18/569,931 priority Critical patent/US12594844B2/en
Priority to EP22832630.2A priority patent/EP4364987A4/en
Publication of WO2023276471A1 publication Critical patent/WO2023276471A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • 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
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • 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
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0411—Arrangement in the front part of the vehicle
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof

Definitions

  • the present invention relates to an electric working vehicle including a battery, a motor driven by electric power supplied from the battery, and a traveling device driven by the motor.
  • This electric working vehicle (“tractor” in Patent Document 1) includes a cover member that covers a battery (“battery for traveling” in Patent Document 1).
  • This cover member is configured to be openable and closable by swinging around a horizontal axis (“opening/closing axis” in Patent Document 1).
  • Patent Document 1 does not describe in detail the supporting structure of the cover member.
  • a configuration is conceivable in which a support frame extending in the vertical direction is provided behind the battery, and the cover member is supported on the upper end of the support frame so as to be swingable about the horizontal axis. .
  • An object of the present invention is to provide an electric working vehicle in which it is not necessary to secure a space behind the battery for arranging a support frame that supports the cover member, and in which the cover member is stably supported. .
  • the present invention is characterized by a battery, a motor driven by electric power supplied from the battery, a traveling device driven by the motor, a cover member covering the battery, and a first support portion supported by the battery. and wherein the cover member is supported by the first support portion in a state that it can swing about the horizontal axis with respect to the first support portion, and swings about the horizontal axis.
  • the first supporting portion is supported by the side portion of the battery.
  • the cover member is supported by the first support portion supported by the side portion of the battery. Therefore, it is not necessary to provide a support frame for supporting the cover member behind the battery.
  • the battery can be arranged closer to the operation unit, a wider space for arranging the battery can be secured. Therefore, the size and capacity of the battery can be increased, and the layout can be improved.
  • the side portion of the battery is stronger than the top plate portion of the battery against force in the direction pressed from above.
  • a cover member is supported by the side part of a battery via a 1st support part. Therefore, the cover member is stably supported compared to a configuration in which the cover member is supported by the top plate portion of the battery.
  • a second support portion is attached to a side portion of the battery, and the first support portion is supported by the side portion of the battery via the second support portion.
  • the configuration in which the cover member is supported by the side portion of the battery can be reliably realized with a relatively simple structure. Therefore, according to this configuration, it is not necessary to secure a space behind the battery for arranging the support frame that supports the cover member, and the electric utility vehicle in which the cover member is stably supported can be relatively
  • the simple structure makes it easy to achieve.
  • the second supporting portion is attached to a suspension portion for suspending the battery provided on the side portion of the battery.
  • the suspending portion for suspending the battery generally has high strength
  • the second supporting portion is stably supported.
  • the cover member is stably supported.
  • the second support part is configured in a gate shape straddling the upper end surface of the battery, the lower end part of the second support part is attached to the side part of the battery, and the battery It is preferable that a gap is provided between the upper end surface of and the second support portion.
  • the heat dissipation from the upper end surface of the battery is less likely to be hindered by the second support portion. That is, according to this configuration, heat radiation from the battery is likely to be favorably performed.
  • a stepped portion is provided on the side portion of the battery, and the second support portion is attached to the stepped portion.
  • the second support portion is supported by the stepped portion, which tends to have relatively high strength. Therefore, since the side portion of the battery receives a force from above in a direction in which strength is ensured, the second support portion is stably supported. Thereby, the cover member is stably supported.
  • an operating section on which an operator can ride and a third supporting section provided between the operating section and the battery, wherein the third supporting section is an electrical component in the operating section. is preferably supported by the battery.
  • the electrical components in the operation section are supported by the battery via the third support section.
  • the electrical components in the operating section can be stably supported.
  • an operating section on which an operator can ride and a third supporting section provided between the operating section and the battery, wherein the third supporting section is an electrical component in the operating section. is supported by the battery, and the second support and the third support are connected.
  • the second support part and the third support part are mutually reinforced by connecting the second support part and the third support part.
  • the cover member and the electrical components in the operating section are stably supported.
  • FIG. 11 is a partially cutaway front view showing the configuration of a driving battery and the like in another embodiment (2).
  • a tractor A (corresponding to an "electric working vehicle” according to the present invention) includes left and right front wheels 10 (corresponding to a “traveling device” according to the present invention), left and right rear wheels 11 (corresponding to a “travel device” according to the present invention). (corresponding to a “running device”) and a cover member 12 .
  • the tractor A is equipped with a body frame 2 and a driving section 3.
  • the body frame 2 is supported by left and right front wheels 10 and left and right rear wheels 11 .
  • the cover member 12 is arranged in the front part of the fuselage.
  • the operating section 3 is provided behind the cover member 12 .
  • the driving section 3 has a protective frame 30, a driver's seat 31, and a steering wheel 32.
  • An operator can sit on the driver's seat 31 . This allows the operator to get on the driving section 3 .
  • the steering wheel 32 By operating the steering wheel 32, the left and right front wheels 10 are steered. The operator can perform various driving operations in the driving section 3 .
  • the tractor A is equipped with a driving unit 3 on which an operator can board.
  • the tractor A also includes a battery 4 for running (corresponding to the "battery” according to the present invention), a motor M, a transmission device T, and a front transmission mechanism FT.
  • the cover member 12 is configured to be swingable around an opening/closing axis Q (see FIG. 2) (corresponding to the "horizontal axis" according to the present invention) along the left-right direction of the machine body. Thereby, the cover member 12 is configured to be openable and closable.
  • driving battery 4 is covered with cover member 12 . That is, the tractor A includes a cover member 12 that covers the running battery 4 . The running battery 4 then supplies power to the motor M. As shown in FIG.
  • the motor M is arranged below the running battery 4 .
  • the motor M is driven by electric power supplied from the running battery 4 .
  • the driving force of the motor M is transmitted to the transmission device T. As shown in FIG.
  • the transmission device T is arranged behind the driving battery 4 and behind the motor M. Further, the front transmission mechanism FT extends forward from the transmission device T. As shown in FIG. Then, the transmission device T changes the speed of the driving force received from the motor M and transmits it to the left and right rear wheels 11 . The driving force is also transmitted from the transmission device T to the left and right front wheels 10 via the front transmission mechanism FT. As a result, the left and right front wheels 10 and the left and right rear wheels 11 are driven.
  • the tractor A includes a driving battery 4 and a motor M driven by electric power supplied from the driving battery 4 .
  • the tractor A also has left and right front wheels 10 and left and right rear wheels 11 driven by a motor M. As shown in FIG.
  • a link mechanism LN is provided at the rear of the tractor A.
  • a working device such as a tiller can be connected to the link mechanism LN.
  • the transmission device T is configured to be able to transmit part of the driving force received from the motor M to the working device. The work device is thereby driven.
  • the tractor A can perform work with the work device while traveling on the left and right front wheels 10 and the left and right rear wheels 11 .
  • the tractor A is equipped with a hydraulic pump 60.
  • the hydraulic pump 60 is provided on the right side of the aircraft.
  • the hydraulic pump 60 is driven by the driving force from the motor M.
  • the hydraulic pump 60 supplies hydraulic oil to each part of the airframe.
  • left and right side covers 35 are provided on the front part of the tractor A body.
  • the side cover 35 has a grill 35a through which air can pass.
  • a lower portion of the left rear portion and a lower portion of the right rear portion of the cover member 12 are notched along the outline of the side cover 35 .
  • the tractor A includes a reserve tank 5 , an inverter 14 , a radiator 15 , an auxiliary battery 18 and a voltage converter 19 .
  • the cover member 12 When the cover member 12 is closed, the reserve tank 5 , the radiator 15 , the auxiliary battery 18 , and the voltage converter 19 are covered with the cover member 12 .
  • the inverter 14 is arranged below the running battery 4 . Inverter 14 converts the DC power from running battery 4 into AC power and supplies it to motor M. As shown in FIG.
  • the reserve tank 5 can store cooling water.
  • a radiator 15 and a water pump are included in the cooling water path in the tractor A.
  • the cooling water is circulated through the cooling water path by pumping the cooling water with the water pump.
  • the cooling water is cooled by passing through the radiator 15 .
  • the auxiliary machine battery 18 supplies power to various auxiliary machines. Electric power is also sent from the running battery 4 to the voltage converter 19 . Voltage converter 19 steps down the electric power from running battery 4 and supplies it to auxiliary equipment battery 18 .
  • the running battery 4 and the inverter 14 are supported by the body frame 2 .
  • the inverter support portion 42 is supported by the body frame 2 .
  • the inverter support portion 42 is a plate-like member that has a horizontal posture.
  • the inverter 14 is placed on the inverter support portion 42 .
  • the first support frame 43a and the second support frame 43b are supported by the inverter support portion 42.
  • a third support frame 43 c is supported by the body frame 2 .
  • the battery support part 44 is provided in the state supported by the 1st support frame 43a, the 2nd support frame 43b, and the 3rd support frame 43c.
  • the battery support portion 44 is a plate-like member that is horizontally positioned. Further, the battery support portion 44 is provided so as to extend over the left and right ends of the driving battery 4 .
  • the running battery 4 is mounted on the battery support portion 44 .
  • the reserve tank 5 , radiator 15 , auxiliary battery 18 , and voltage converter 19 are also supported by the body frame 2 .
  • the running battery 4 has a battery upper portion 48 and a battery lower portion 49 .
  • the battery upper portion 48 is positioned above the battery lower portion 49 .
  • the length of the lower battery portion 49 in the front-rear direction is longer than the length of the upper battery portion 48 in the front-rear direction.
  • the length of the lower battery portion 49 in the left-right direction is longer than the length of the upper battery portion 48 in the left-right direction. Therefore, as shown in FIGS. 2 and 3, a stepped portion 4b is formed between the battery upper portion 48 and the battery lower portion 49. As shown in FIG.
  • the stepped portion 4b is provided along the entire circumference of the driving battery 4. In other words, the stepped portion 4 b is provided over all the front, rear, left, and right side portions of the driving battery 4 .
  • the stepped portion 4b is provided on the side portion of the running battery 4. As shown in FIG.
  • the cover member 12 has a gate-shaped frame portion 12f and a connecting portion 12g when viewed from the front.
  • the frame portion 12 f is provided on the inner wall side of the cover member 12 .
  • the connecting portion 12g protrudes downward from the lower surface of the upper end portion of the frame portion 12f.
  • connecting portions 12g are provided in the present embodiment.
  • the present invention is not limited to this, and the number of connecting portions 12g provided may be one, or three or more.
  • the tractor A has a first support portion 81 and a second support portion 82 .
  • the second support portion 82 is configured in a gate shape that straddles the upper end surface 4 a of the running battery 4 . As shown in FIG. 4 , a gap G is provided between the upper end surface 4 a of the running battery 4 and the second support portion 82 . Also, the second support portion 82 is attached to the stepped portion 4b.
  • the stepped portion 4b is formed with a hanging portion 4c.
  • the suspension portion 4 c is a bolt hole used for suspension of the driving battery 4 .
  • FIG. 6 shows the hanging portion 4c at the right rear portion of the running battery 4, the hanging portions 4c are also formed at the right front portion, the left front portion, and the left rear portion of the running battery 4.
  • mounting portions 82a are provided at the left and right lower end portions of the second support portion 82, respectively.
  • the mounting portion 82a is formed in a horizontal plate shape.
  • the right attachment portion 82a is attached to the suspension portion 4c at the right rear portion of the driving battery 4 with the first bolt b1.
  • the left attachment portion 82a is attached to the hanging portion 4c at the left rear portion of the driving battery 4 with a first bolt b1.
  • the second support portion 82 is attached to the hanging portion 4 c for hanging the driving battery 4 provided on the side portion of the driving battery 4 . Moreover, the lower end portion of the second support portion 82 is attached to the side portion of the driving battery 4 due to the configuration described above.
  • the tractor A has the second support portion 82 attached to the side portion of the running battery 4 .
  • the first support portion 81 extends upward from the upper surface of the upper end portion of the second support portion 82 . That is, the first support portion 81 is supported by the side portion of the driving battery 4 via the second support portion 82 .
  • first support portions 81 are provided in this embodiment.
  • the present invention is not limited to this, and the number of first support portions 81 provided may be one, or three or more.
  • the tractor A has the first supporting portion 81 supported by the driving battery 4 . Further, the first support portion 81 is supported by the side portion of the running battery 4 .
  • the right first support portion 81 and the right connecting portion 12g are connected by a pin 6 so as to be relatively rotatable about the opening/closing axis Q.
  • the left first support portion 81 and the left connecting portion 12g are connected by a pin 6 so as to be relatively rotatable about the opening/closing axis Q.
  • the cover member 12 is supported by the left and right first support portions 81 in a state in which it can swing about the opening/closing axis Q with respect to the left and right first support portions 81 .
  • the cover member 12 is supported by the first support portion 81 so as to be swingable about the opening/closing axis Q with respect to the first support portion 81, and is swingable about the opening/closing axis Q. can be opened and closed by
  • a panel portion 37 and a display device 38 are provided in the front portion of the operation portion 3. As shown in FIG. The display device 38 is attached to the panel section 37 .
  • the display device 38 can display various information.
  • a third support portion 83 is provided between the driving portion 3 and the running battery 4. As shown in FIGS. As shown in FIG. 2 , the third support portion 83 is supported by the body frame 2 . The third support portion 83 extends in the vertical direction of the fuselage. Further, as shown in FIGS. 4 to 6, the third support portion 83 is configured in a gate shape.
  • the tractor A has the third support section 83 provided between the driving section 3 and the driving battery 4 .
  • a first support stay 85 is connected to the upper surface of the third support portion 83. As shown in FIGS. 2, 5, and 6, a first support stay 85 is connected to the upper surface of the third support portion 83. As shown in FIGS. The first support stay 85 extends rearward from the third support portion 83 .
  • a second support stay 86 extends upward from the upper surface of the first support stay 85 .
  • a third support stay 87 is connected to an intermediate portion of the second support stay 86 .
  • the third support stay 87 extends in the left-right direction.
  • the rear portion of the first support stay 85 extends rearward and downward.
  • a fourth support stay 88 is connected to the rear portion of the first support stay 85 .
  • the fourth support stay 88 extends in the left-right direction. Left and right ends of the fourth support stay 88 are bent rearward and downward.
  • the upper part of the panel part 37 is attached to the left end and right end of the third support stay 87 .
  • the lower portion of the panel portion 37 is attached to the left end portion and the right end portion of the fourth support stay 88 . That is, the panel portion 37 is supported by the third support portion 83 via the first support stay 85 , the second support stay 86 , the third support stay 87 and the fourth support stay 88 .
  • the display device 38 is supported by the third support portion 83 via the panel portion 37, the first support stay 85, the second support stay 86, the third support stay 87, and the fourth support stay 88. .
  • a connecting stay 89 extends rearward from the lower surface of the upper end portion of the second support portion 82 .
  • a rear end portion of the connecting stay 89 is connected to an upper end portion of the third support portion 83 by a second bolt b2. That is, the second support portion 82 is connected to the third support portion 83 via the connection stay 89 .
  • connection stays 89 two left and right connection stays 89 are provided.
  • the present invention is not limited to this, and the number of connecting stays 89 provided may be one, or three or more.
  • the second support portion 82 and the third support portion 83 are connected. Also, the third support portion 83 is supported by the driving battery 4 via the connecting stay 89 and the second support portion 82 .
  • the third support portion 83 supports the display device 38 in the driving portion 3 and is also supported by the driving battery 4 .
  • a plurality of lateral frames 84 are attached to the third support portion 83 as shown in FIGS.
  • the horizontal frame 84 extends in the left-right direction.
  • the horizontal frame 84 is attached to the third support portion 83 from the rear side.
  • the electronic control unit 7 is attached to the horizontal frame 84. Thereby, the electronic control unit 7 is supported by the third support portion 83 via the horizontal frame 84 . The electronic control unit 7 controls each part of the tractor A.
  • the tractor A has a front cover portion 36. As shown in FIGS. The front cover portion 36 is positioned behind the cover member 12 . The front cover portion 36 covers the electronic control unit 7 and the third support portion 83 . Further, the front cover portion 36 covers the outer edge portion of the panel portion 37 .
  • cover mounting stays 90 are connected to the left end and right end of the second support portion 82, respectively. Each cover mounting stay 90 extends rearward and upward from the second support portion 82 .
  • the left inner attachment portion 36a is attached to the left cover attachment stay 90.
  • the right inner mounting portion 36a is attached to the right cover mounting stay 90. As shown in FIG.
  • the front cover portion 36 is supported by the running battery 4 via the cover mounting stay 90 and the second support portion 82 .
  • the front cover portion 36 is attached to the upper end portion of the second support stay 86 .
  • the front cover portion 36 is supported by the running battery 4 via the second support stay 86 , the first support stay 85 , the third support portion 83 , the connecting stay 89 , and the second support portion 82 .
  • the cover member 12 is supported by the first support portion 81 supported by the side portion of the driving battery 4 . Therefore, it is not necessary to provide a support frame for supporting the cover member 12 behind the running battery 4 . In addition, since it is possible to dispose the driving battery 4 closer to the driving unit 3, a large space for arranging the driving battery 4 can be secured. Therefore, it is possible to increase the size and capacity of the running battery 4, and it is possible to improve the layout.
  • the side portion of a battery such as the running battery 4 is stronger against force in the direction pressed from above than the top plate portion of the battery.
  • the cover member 12 is supported by the side portion of the running battery 4 via the first support portion 81 . Therefore, the cover member 12 is stably supported as compared with the configuration in which the cover member 12 is supported by the top plate portion of the driving battery 4 .
  • the tractor A may be equipped with an engine and configured in a hybrid system.
  • the upper end portion of the lower battery portion 49 may be provided with a protruding portion 49a that protrudes in the lateral direction of the vehicle body.
  • a stepped portion 4b is formed between the battery upper portion 48 and the projecting portion 49a.
  • the protruding portion 49a protrudes outward in the lateral direction of the vehicle body from the left and right ends of the upper battery portion 48.
  • the length in the left-right direction of the portion of the lower battery portion 49 below the projecting portion 49 a is the same as the length in the left-right direction of the upper battery portion 48 .
  • the first support portion 81 may be directly supported by the side portion of the running battery 4 without the second support portion 82 interposed therebetween.
  • the second support portion 82 may be attached to a portion of the side portion of the running battery 4 other than the suspension portion 4c.
  • the upper end surface 4a of the running battery 4 and the second support portion 82 may be in contact with each other. In other words, the gap G may not be provided between the upper end surface 4a of the running battery 4 and the second support portion 82 .
  • the second support portion 82 may be attached to a portion of the side portion of the running battery 4 other than the stepped portion 4b.
  • the second support portion 82 may be attached to the side surface of the running battery 4 .
  • the stepped portion 4b may not be provided on the side portion of the running battery 4 .
  • the connecting stay 89 may not be provided. That is, the second support portion 82 and the third support portion 83 do not have to be connected. Moreover, the third support portion 83 does not have to be supported by the driving battery 4 .
  • the opening/closing axis Q does not have to be along the left-right direction of the fuselage.
  • the opening/closing axis Q may extend along the longitudinal direction of the machine body.
  • the present invention can be used not only for tractors, but also for various electric working vehicles such as combine harvesters, rice transplanters, and construction work machines.
  • driving unit 4 driving battery (battery) 4a Upper end surface 4b Stepped portion 4c Suspension portion 10 Front wheel (running device) 11 Rear wheel (running device) 12 cover member 38 display device (electrical component) 81 first support portion 82 second support portion 83 third support portion A tractor (electric working vehicle) G Gap M Motor Q Opening/closing axis (horizontal axis)

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Superstructure Of Vehicle (AREA)
PCT/JP2022/020483 2021-06-29 2022-05-17 電動作業車 Ceased WO2023276471A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US18/569,931 US12594844B2 (en) 2021-06-29 2022-05-17 Electric work vehicle
EP22832630.2A EP4364987A4 (en) 2021-06-29 2022-05-17 Electric work vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021107500A JP7498683B2 (ja) 2021-06-29 2021-06-29 電動作業車
JP2021-107500 2021-06-29

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WO2023276471A1 true WO2023276471A1 (ja) 2023-01-05

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PCT/JP2022/020483 Ceased WO2023276471A1 (ja) 2021-06-29 2022-05-17 電動作業車

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