JP2016055780A - Fuel cell motor cycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell motor cycle capable of improving course keeping property, and improving heat release property of a controller.SOLUTION: A fuel cell motor cycle comprises a fuel cell for supplying power to a motor for driving drive wheels, in which a power unit having the motor is supported to one side of a vehicle width direction, relative to a vehicle center line, and a controller 30 for the fuel cell is disposed on a lower side of a foot board 27 on the other side of the vehicle width direction relative to the vehicle center line.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a motorcycle using a motor as a drive source, and more particularly to a fuel cell motorcycle that travels by driving a motor with electric power generated by a fuel cell.

  In recent years, motorcycles using a motor as a drive source instead of an engine have been developed from the viewpoint of environmental protection and the like. In a motorcycle using this motor as a drive source, a power unit having a motor is arranged on either the left or right side of a rear wheel serving as a drive wheel. Since this power unit is heavy, if it is disposed at a position deviated to one side with respect to the vehicle center line, the left and right weight balance of the vehicle may be lost, and the needle-holding property may be impaired. Therefore, for example, in the electric motorcycle disclosed in Patent Document 1, a power unit is disposed on one side in the vehicle width direction from the vehicle center line, and a battery is disposed on the other side to adjust the left and right weight balance. In this way, the needle-keeping property is ensured.

In addition, a motorcycle using such a motor as a drive source is provided with a power element for motor control, a power element for switching a charger, an electronic component such as an inverter or a converter, and heat generated from these electronic components. It is required to be removed. Therefore, for example, in the electric motorcycle disclosed in Patent Document 2, a heat sink is provided on the lower surface side of the electronic component disposed within the inverted trapezoidal bank angle connecting the upper and lower pipe members of the footstep portion. Heat is emitted from the electronic component through the heat radiation fin.
(For example, refer to Patent Document 1).

JP 2011-152901 A Japanese Patent Laid-Open No. 5-116665

  However, in the case of a motorcycle equipped with a fuel cell that supplies power to the motor of the drive source, in addition to a cylinder that stores fuel gas, a fuel cell that generates power using this gas, a secondary battery such as a battery, Since it is necessary to provide a control device for controlling these, there are many restrictions on the layout.

  Therefore, the configuration of the electric motorcycle disclosed in Patent Document 1 described above cannot be applied to a motorcycle equipped with a fuel cell as it is. It is still difficult to improve.

  On the other hand, in the electric motorcycle disclosed in Patent Document 2 described above, since the heat dissipating fins of the heat sink are provided so as to be exposed downward from the lower surface of the foot step part, the gap between the heat dissipating fins due to the scattering of mud from the front wheels. May clog and reduce the heat dissipation effect. Moreover, since the weight balance with the motor arranged offset with respect to the vehicle center line is not adjusted, there is a problem that the needle-holding property is deteriorated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fuel cell motorcycle capable of improving the maintenance of the needle and improving the heat dissipation of the control device.

  In order to achieve the above-described object, the present invention provides a fuel cell motorcycle including a fuel cell that supplies electric power to a motor that drives drive wheels, wherein a power unit having the motor on one side in the vehicle width direction from the vehicle center line is provided. The fuel cell control device is arranged below the footboard on the other side in the vehicle width direction from the vehicle center line.

  By providing this configuration, the left and right weight balance in the vehicle width direction can be adjusted by the power unit and the control device, the needle-keeping property can be ensured, and the maneuverability can be improved.

  Further, in the fuel cell motorcycle according to the present invention, the control device includes a heat sink that is provided to be exposed to the outside in the vehicle width direction, and the heat sink is formed in parallel with the vertical direction so as to follow the vehicle traveling direction. May be provided.

  By providing this configuration, it is possible to prevent clogging of the fins due to scattering of mud from the front wheels and the like, and the cooling performance of the control device can be kept high.

  Further, in the fuel cell motorcycle according to the present invention, the control device is covered with an under cover on the outer side and the lower side in the vehicle width direction behind the front leg shield cover that covers the front part of the frame of the vehicle body, A wind guide hole may be formed in the front leg shield cover so as to take the traveling wind into the under cover.

  By providing this configuration, it is possible to improve the design, and it is possible to improve the cooling effect of the control device by taking the traveling wind into the under cover through the air guide holes.

  In the fuel cell motorcycle according to the present invention, the control device may include a heat sink provided on the outer side in the vehicle width direction, and the heat sink may be directly fixed to the frame of the vehicle body.

  With this configuration, the heat dissipation performance of the heat sink can be improved, and the cooling efficiency can be improved.

  In the fuel cell motorcycle according to the present invention, a reinforcing rib projects downward from the lower surface of the footboard, and a predetermined distance is provided between the lower end of the reinforcing rib and the upper surface of the control device. A gap may be formed.

  By providing this configuration, even if an excessive load is applied to the footboard, the reinforcing ribs of the footboard come into contact with the upper surface of the control device, so that further deformation of the footboard can be prevented. In addition, the thickness of the footboard can be reduced, and the weight and cost of the vehicle can be reduced.

  According to the present invention, it is possible to obtain various excellent effects such as improvement in needle-holding property and increase in heat dissipation of the control device.

1 is a perspective view showing an internal structure of a fuel cell motorcycle according to an embodiment of the present invention. 1 is a plan view showing a frame of a fuel cell motorcycle according to an embodiment of the present invention. 1 is a right side view showing a fuel cell motorcycle according to an embodiment of the present invention. It is AA sectional drawing of FIG.

  Hereinafter, a fuel cell motorcycle 1 according to an embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 is a perspective view showing the internal structure of the fuel cell motorcycle 1 according to the embodiment of the present invention, FIG. 2 is a plan view showing a frame 9 of the fuel cell motorcycle 1, and FIG. FIG. 4 is a right side view showing the two-wheeled vehicle 1, and FIG. 1 to 3, an arrow F is attached to the front of the motorcycle 1, and an arrow R is attached to the rear.

  The fuel cell motorcycle 1 according to the present embodiment is a scooter type motorcycle including an air-cooled fuel cell system 10 that travels by driving a motor (not shown) with electric power generated by the fuel cell 2. The fuel cell motorcycle 1 drives a vehicle body 4 extending in the front-rear direction, a front wheel 5 that is a steering wheel, a steering mechanism 6 that supports the front wheel 5 in a steerable manner, a rear wheel 7 that is a driving wheel, and a rear wheel 7. And a power unit 8 having the motor (not shown).

  The vehicle main body 4 includes a frame 9 that extends in the front-rear direction of the vehicle, an exterior 11 that covers the frame 9, and a fuel cell system 10.

  The frame 9 is configured by integrally joining a plurality of steel hollow tubes, and includes a head pipe 12, an upper down frame 13, a pair of left and right lower down frames 14, and a pair of left and right lower frames 15. A pair of left and right upper frames 16, a pivot 17, and a guard frame 18.

  The head pipe 12 is provided at the upper part of the front end of the frame 9 and supports the steering mechanism 6 so as to be rotatable in the left-right direction of the vehicle. The upper down frame 13 is connected to the central portion of the head pipe 12 and is formed to be inclined downward from the connecting portion. The lower down frame 14 is connected to the lower portion of the head pipe 12, and is formed to be inclined downward from the connecting portion.

  The pair of left and right lower frames 15 are connected to the lower portion of the head pipe 12 so as to sandwich the lower down frame 14, and are formed to be inclined downward from the connecting portion. The front foot bracket 21 is supported in a cantilever manner so as to protrude to the front. Further, the pair of left and right lower frames 15 linearly extend rearward from the rear lower inclined portion 20 to the center position in the front-rear direction of the vehicle body 4, and then tilt upward to the left and right upper frames 16. It is connected. The rear foot bracket 22 is cantilevered so as to protrude outward in the vehicle width direction at the rearwardly upward inclined portion 50.

  The pair of left and right upper frames 16 are connected to the central portion of the rear lower inclined portion 20 of the lower frame 15 at the front portion of the vehicle main body 4, and extend substantially horizontally toward the rear of the vehicle main body 4 from this connection portion. In the upper part of the rear wheel 7, it is greatly inclined rearward and upward to extend to the same height as the head pipe 12.

  The pivot 17 is formed so as to extend in the vehicle width direction of the vehicle body 4, and is spanned between the left and right upper frames 16 behind the connecting portion between the upper frame 16 and the lower frame 15. The guard frame 18 is installed between the lower portions of the left and right lower frames 15.

  The exterior 11 includes a front leg shield cover 23 that covers the front portion of the frame 9 of the vehicle body 4, a front frame cover 24 that covers the center portion of the vehicle body 4, and a frame cover that covers the lower side portion of the rear portion of the vehicle body 4. 25. A leg shield 26 is formed below the front frame cover 24. A footboard 27 is connected to the leg shield 26, and the footboard 27 is supported by the front foot bracket 21 and the rear foot bracket 22.

  The fuel cell system 10 includes a fuel cell 2 that generates power by a reaction between fuel and an oxidant, a fuel tank 28 that can store fuel used for power generation by the fuel cell 2, and a secondary battery that assists the power of the fuel cell 2. 29 and a control device 30 for controlling them.

  The fuel cell 2 uses hydrogen gas as a fuel and oxygen in the air as an oxidant. The fuel cell 2 is disposed above the rear wheel 7 and is supported on the left and right upper frames 16 in a leaning posture.

  The fuel tank 28 is constituted by a composite container made of aluminum liner that stores hydrogen gas as fuel of the fuel cell 2 and has a cylindrical shape having dome-shaped end plates on front and rear end faces. The fuel tank 28 is disposed in a space surrounded by the left and right upper frames 16 and the left and right lower frames 15 in a posture in which the center of the cylinder is directed in the front-rear direction of the vehicle body 4, and is installed between the left and right lower frames 15. The clamp band 31 is fixed.

  The secondary battery 29 is a box-shaped lithium ion battery. The secondary battery 29 is supported on the rear side of the left and right upper frames 16 and is disposed above the rear end plate of the fuel tank 28. Details of the control device 30 will be described later.

  The steering mechanism 6 is positioned in front of the vehicle body 4 and rotates in the left-right direction around the head pipe 12 of the frame 9 to enable the front wheels 5 to be steered. The steering mechanism 6 includes a handle 32 positioned at the top, and a pair of left and right front forks 33 extending slightly upward and tilting backward between the front wheel 5 and the handle 32. The left and right front forks 33 rotatably support the front wheels 5 at the lower ends.

  The power unit 8 is provided so as to be swingable in the vertical direction about the pivot 17 on one side in the vehicle width direction (here, the left side) from the vehicle center line, and supports the rear wheel 7 in a cantilever manner. . In the power unit 8, a power transmission transmission device (not shown) is accommodated in the casing 34, the motor (not shown) is installed on the input side of the power transmission transmission device, and the rear wheel 7 is pivotally supported on the output side. It has the structure which was made. A rear suspension 35 is interposed between the upper frame 16 and the power unit 8, and the swing of the power unit 8 is buffered by the rear suspension 35.

  Next, the control device 30 of the fuel cell motorcycle 1 according to the embodiment of the present invention will be described mainly with reference to FIGS.

  The control device 30 is for controlling the fuel cell 2 (see FIG. 1), the fuel tank 28, the secondary battery 29 (see FIG. 1), and the like, on the opposite side of the power unit 8 across the vehicle center line. It is disposed below the footboard 27 on the other side in the vehicle width direction from a certain vehicle center line and at a position as close as possible to the fuel cell 2 and the secondary battery 29. A plurality of reinforcing ribs 36 project downward from the lower surface of the footboard 27. Thereby, the thickness of the foot board 27 which generally requires a thickness of about 2.5 to 3 mm can be reduced to about 2.0 mm.

  The control device 30 includes, for example, various electronic components 37 such as a DCDC converter, an inverter, and a transformer, a case 38 for housing these electronic components 37, and a heat sink 40 for releasing heat generated from the electronic components 37. , And is configured. Various electronic components 37 are arranged inside the case 38 with a predetermined space 41 therebetween. A predetermined gap (about 1.5 mm) is formed between the lower end of the reinforcing rib 36 of the footboard 27 and the upper surface of the case 38. As a result, even if an excessive load is applied to the footboard 27, the reinforcing ribs 36 abut against the upper surface of the control device 30, so that further deformation of the footboard 27 can be prevented. Further, since the foot board 27 can be prevented from always contacting the control device 30, damage to the case 38 can be prevented.

  The heat sink 40 is provided so as to be exposed to the outside in the vehicle width direction from the electronic component 37, and includes heat radiating fins 42 formed in parallel in the vertical direction along the vehicle traveling direction. The heat sink 40 is directly fixed to the lower frame 15 of the vehicle body 4 with bolts or the like, so that heat generated from the electronic component 37 can be efficiently discharged to the outside.

  In addition, as indicated by a two-dot chain line in FIG. 3, the control device 30 may be covered with an under cover 43 on the outer side and the lower side in the vehicle width direction behind the front leg shield cover 23. In this case, a wind guide hole 44 is formed in the front leg shield cover 23 so as to take in the running wind into the under cover 43, and the running wind that has entered the under cover 43 from the wind guide hole 44 is behind the under cover 43. It is discharged outside through a discharge hole (not shown). Thereby, while being able to improve design nature, the cooling effect of the control apparatus 30 can be heightened by taking in driving | running | working wind in the undercover 43 via the air guide hole 44. FIG.

As described above, according to the fuel cell motorcycle 1 according to the embodiment of the present invention described above, the left and right weight balance in the vehicle width direction can be adjusted by the power unit 8 and the control device 30, so It can be secured and the maneuverability can be improved.

  Further, since the heat radiating fins 42 of the heat sink 40 are formed in parallel in the vertical direction so as to follow the vehicle traveling direction, it is possible to prevent clogging of the gaps of the heat radiating fins 42 due to scattering of mud from the front wheels 5 or the like. The cooling performance of the control device 30 can be kept high.

  Furthermore, by arranging the control device 30 as close as possible to the fuel cell 2 and the secondary battery 29, the length of the high-voltage wiring can be shortened, and the cost can be reduced.

  The above description of the embodiment of the present invention describes a preferred embodiment of the fuel cell motorcycle according to the present invention, and therefore may have various technically preferable limitations. However, the technical scope of the present invention is not limited to these embodiments unless specifically described to limit the present invention. That is, the above-described components in the embodiment of the present invention can be appropriately replaced with existing components and the like, and various variations including combinations with other existing components are possible. The description of the embodiment of the present invention described above does not limit the contents of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 Fuel cell motorcycle 2 Fuel cell 4 Vehicle body 7 Rear wheel (drive wheel)
8 Power Unit 9 Frame 23 Front Leg Shield Cover 27 Footboard 30 Control Device 36 Reinforcing Rib 40 Heat Sink 42 Heat Dissipating Fin 43 Undercover 44 Air Conducting Hole

Claims (5)

In a fuel cell motorcycle including a fuel cell that supplies power to a motor that drives a drive wheel,
The power unit having the motor is supported on one side in the vehicle width direction from the vehicle center line, and the fuel cell control device is disposed below the footboard on the other side in the vehicle width direction from the vehicle center line. A featured fuel cell motorcycle.   2. The control device according to claim 1, further comprising a heat sink that is provided to be exposed outside in the vehicle width direction, and the heat sink includes heat radiation fins that are formed in parallel in the vertical direction so as to follow the vehicle traveling direction. The fuel cell motorcycle described in 1.   The control device is covered with an under cover on the outer side and the lower side in the vehicle width direction behind the front leg shield cover that covers the front portion of the frame of the vehicle body, and the front leg shield cover travels within the under cover. The fuel cell motorcycle according to claim 1, wherein a wind guide hole is formed so as to take in wind.   The fuel cell automatic according to any one of claims 1 to 3, wherein the control device includes a heat sink provided on an outer side in the vehicle width direction, and the heat sink is directly fixed to a frame of the vehicle body. Motorcycle.   Reinforcing ribs project downward from the lower surface of the footboard, and a predetermined gap is formed between a lower end of the reinforcing ribs and an upper surface of the control device. The fuel cell motorcycle according to any one of claims 1 to 4.

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