JP2002037167A - Motorcycle - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a motorcycle that can supply warm air to occupants in cold weather, improve comfort, and effectively use exhaust energy. Further, the present invention provides a motorcycle capable of increasing the energy conversion efficiency of the entire vehicle by using waste heat of a DC-DC converter for voltage conversion of a drive system. A motorcycle (20) having a fuel cell system mounted in a vehicle body cover (39) and running by supplying generated electric power to a drive system. The motorcycle (20) has a traveling wind intake opening in the vehicle body cover (39). Forward or seat 37
A ventilation opening is provided in the vehicle body cover 39 around the vehicle to serve as an outlet for the traveling wind introduced into the vehicle body cover 39. The voltage conversion DC-DC converter of the drive system and the hydrogen storage alloy hydrogen fuel container 17 of the fuel cell system are arranged close to each other, and the exhaust heat of the voltage conversion DC-DC converter can be transmitted to the hydrogen fuel container 17. I have to.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a motorcycle equipped with a fuel cell system and a drive system.

[0002]

2. Description of the Related Art There has been proposed a motorcycle in which a fuel cell system is mounted, electricity generated from the fuel cell system is supplied to a drive system, and the drive wheels are driven by the drive system.

[0003]

By the way, the running wind is taken into the vehicle body cover to cool the fuel cell system and the battery, and the exhaust after cooling is discharged to the atmosphere, and the thermal energy of the exhaust is wasted. I was

Further, a DC-D for voltage conversion of a drive system
The C converter is mounted at a position facing the outside of the vehicle so as to be cooled by the traveling wind. The energy of the conversion loss during startup is released into the atmosphere as heat, and this energy is about 10% before and after the conversion. It lowers the overall energy conversion efficiency.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems, and a first object is to supply warm air to an occupant in cold weather, improve comfort, and furthermore, use another device in cold weather. It is an object of the present invention to provide a motorcycle that can effectively utilize exhaust energy without having to make a vehicle.

It is a second object of the present invention to provide a motorcycle capable of increasing the energy conversion efficiency of the entire vehicle by utilizing waste heat of a DC-DC converter for voltage conversion of a drive system.

[0007]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

[0008] The invention described in claim 1 is a motorcycle that is mounted with a fuel cell system in a vehicle body cover and supplies electric power generated by the fuel cell system to a drive system to travel. A motorcycle having a driving wind intake opening and a ventilation opening serving as an exit of the driving wind taken into the vehicle body cover in a vehicle body cover in front of or around the seat occupant. ].

According to the first aspect of the present invention, the vehicle is directed from the ventilation opening, which serves as an outlet for the traveling wind taken in the vehicle body cover provided in the vehicle body cover provided in front of or around the vehicle occupant sitting on the seat, toward the vehicle occupant. Hot air is exhausted and hot air can be supplied to the occupants in cold weather, improving comfort.Therefore, there is no need to generate hot air in another device in cold weather, and exhaust energy can be used, so the overall energy efficiency of the vehicle is improved. Increase.

According to a second aspect of the present invention, there is provided a motorcycle in which a fuel cell system is mounted in a vehicle body cover, and power generated by the fuel cell system is supplied to a drive system to travel. DC-DC for voltage conversion
A motorcycle, wherein a converter and a hydrogen fuel container of the fuel cell system are arranged close to each other, and the exhaust heat of the DC-DC converter for voltage conversion can be transmitted to the hydrogen fuel container. ].

According to the second aspect of the present invention, since the exhaust heat of the voltage conversion DC-DC converter can be transmitted to the hydrogen fuel container, the heat of the voltage conversion DC-DC converter is heated to the hydrogen fuel. The fuel can be used up to the end by improving the vaporization and activity of the fuel, and the heat generated by the conversion loss of the DC-DC converter for voltage conversion is used to improve the energy conversion efficiency of the entire vehicle. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A motorcycle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

First, a first embodiment is shown in FIGS. FIG. 1 is a diagram showing a fuel cell system and a drive system mounted on a motorcycle, FIG. 2 is a side view of the motorcycle, and FIG. 3 is a plan view of the motorcycle.

In FIG. 1, reference numeral 1 denotes a fuel cell system, and 2 denotes a drive system. The motorcycle is run by supplying electric power generated by the fuel cell system 1 to a motor 3 of the drive system 2.

The fuel cell system 1 supplies hydrogen to the cell stack 7 by a hydrogen supply system 6, circulates and supplies water into the cell stack 7 by a water supply system 8, and further supplies air to the air supply system 9. Thus, electricity is generated by being supplied into the cell stack 7. These constitute a hydrogen gas FC unit 60. 1a is an FC controller for performing various controls of the fuel cell system 1.

The drive system 2 converts the electric power supplied from the fuel cell system 1 into a motor 3 via a DC-DC converter 2b for voltage conversion according to an input command from a throttle grip of a steering handle 33 by a vehicle controller 2a. To drive the motorcycle 20,
The battery 28 is configured to be charged with electric power. 2c is a fuse.

The hydrogen supply system 6 includes a hydrogen generator or
The hydrogen in the hydrogen fuel container 17, which is a hydrogen storage containing a hydrogen storage alloy, is closed by a valve 18, a flow control valve 19,
The hydrogen is supplied to the cell stack 7 via the buffer tank 40, and the hydrogen passing therethrough is burned in the catalytic combustor 41.
It is designed to be discharged outside. In addition, 42a is an open / close valve, Ta is a temperature sensor for detecting the temperature in the storage box,
Tc is a temperature sensor for detecting the temperature in the cell stack 7;
A is a current sensor for detecting a current value supplied from the cell stack 7, V is a voltage sensor for detecting a voltage across the cell stack 7, and 5 is a backflow prevention diode. D
The water supply system 8 supplies the water in the water tank 43 to the cell stack 7 by a water pump 44 for cooling and humidification, and passes the water passing therethrough through an opening / closing valve 42b and a heat exchanger 45 for water recovery. It is configured to return to the inside of the tank 43.

The air supply system 9 sucks and introduces the outside air by the fan 27, and the introduced air is used as the moisture recovery heat exchanger 4.
The pressure is supplied from the opening / closing valve 42b into the cell stack 7 through the opening / closing valve 42b via the blower 5, and the air passing therethrough is discharged to the outside through the moisture recovery heat exchanger 45.

Reference numeral 20 denotes a motorcycle on which the fuel cell system 1 and the drive system 2 are mounted, and has the following general structure. Head pipe 25 at the front end of body frame 21
As a result, the front fork 31 is pivotally supported to be steerable left and right, the front wheel 32 is pivotally supported at the lower end of the front fork 31, and the steering handle 33 is fixed to the upper end. Also, the body frame 21
A rear frame 26 is connected to a lower rear portion of the vehicle. A front end of a unit swing type motor unit 34 is pivotally supported by the rear frame 26, and a rear side is supported by the rear frame 26 via a rear cushion 35. A rear wheel 36 is supported at the rear end of the motor unit 34.

In the motorcycle 20, an occupant 38 sits on a seat 37 and travels while gripping a steering handle 33. The front side of the vehicle body and the periphery of the seat 37 are covered by a vehicle body cover 39. ing. Body cover 39
Inside, the batteries 28 of the drive system 2 are arranged on the front side and the rear side of the head pipe 25. Front battery 2
8 is supported by the head pipe 25 via a bracket 50, and the battery 28 on the rear side is directly supported on the upper part of the vehicle body frame 21.

A hydrogen gas FC unit 60 of the fuel cell system 1 is mounted on the vehicle body frame 21 and a hydrogen gas F
The C unit 60 is arranged at a step position below the seat 37. The hydrogen fuel container 17 is mounted on the rear frame 26.

The vehicle body cover 39 is provided with a traveling air intake opening 39a at a position above the front wheel 32 on the front side, and traveling air is introduced into the vehicle body cover 39 from the traveling air intake opening 39a. Further, behind the head pipe 25 in front of the occupant 38 seated on the seat 37, above the hydrogen gas FC unit 60,
Alternatively, a ventilation opening 39 serving as an outlet for the traveling wind introduced into the vehicle body cover 39 is provided in the vehicle body cover 39 around the seat 37.
b, 39c and 39d are provided.

When the occupant needs warm air in cold weather, the battery 2 is directed toward the occupant from the ventilation openings 39b, 39c, 39d.
8 and the hot air that has cooled the hydrogen gas FC unit 60 are discharged. In this way, warm air can be supplied to the occupant in cold weather, and comfort is improved. Further, it is not necessary to generate warm air in another device in cold weather, and exhaust energy can be used, so that the energy efficiency of the entire vehicle increases.

Next, a second embodiment is shown in FIGS. 4 is a side view of the motorcycle, FIG. 5 is a plan view of the motorcycle, and FIG. 6 is a front view of the motorcycle.

FIG. 1 shows an embodiment of the motorcycle 20.
The same components as those in the embodiments of FIG. 3 to FIG. The hydrogen gas FC unit 60 and the battery 28 of the fuel cell system 1 are mounted on the vehicle body frame 21, and the hydrogen gas FC unit 60 and the battery 28 are arranged below the vehicle body frame 21. The hydrogen fuel container 17 is mounted on the rear frame 26.

The vehicle body cover 39 is provided with a traveling wind intake opening 39f on the front side at a position behind the front wheels 32, and the traveling wind is introduced into the vehicle body cover 39 from the traveling wind intake opening 39f. The vehicle body cover 39 above the vehicle body frame 21 in front of the occupant sitting on the seat 37 is provided with a ventilation opening 39g serving as an outlet for the traveling wind introduced into the vehicle body cover 39.

When the occupant needs warm air in cold weather, the battery 28 and the hydrogen gas FC are directed toward the occupant through the ventilation opening 39g.
The hot air that has cooled the unit 60 is discharged.

Next, a third embodiment is shown in FIGS. 7 is a side view of the motorcycle, FIG. 8 is a plan view of the motorcycle, and FIG. 9 is a front view of the motorcycle.

FIG. 1 shows an embodiment of the motorcycle 20.
The same components as those in the embodiments of FIG. 3 to FIG. In the motorcycle 20, the rear wheel 36 is driven by a wheel-in motor 70. A hydrogen gas FC unit 60 and a battery 28 of the fuel cell system 1 are mounted on the body frame 21.
Is located below the seat 37, and the battery 28 is located at the step position. The hydrogen fuel container 17 is mounted on the rear frame 26. A hydrogen gas FC unit 60 is arranged below the seat 37.

A traveling wind intake opening 39i is provided in the vehicle body cover 39 at a position above the front wheels 32 on the front side, and traveling wind is introduced into the vehicle body cover 39 from the traveling wind intake opening 39i. Further, a ventilation opening 39 serving as an outlet of the traveling wind taken in the vehicle body cover is provided in the vehicle body cover 39 around the seat 37.
j, 39k are provided.

When the occupant needs hot air in cold weather, the hot air that has cooled the battery 28 and the hydrogen gas FC unit 60 is discharged from the ventilation openings 39j and 39k toward the occupant.

Next, a fourth embodiment will be described with reference to FIGS.
It is shown in FIG. 10 is a side view of the motorcycle, FIG. 11 is a plan view of the motorcycle, and FIG. 12 is a front view of the motorcycle.

In the embodiment of the motorcycle 20, FIG.
The same components as those in the embodiments of FIG. 3 to FIG. A hydrogen gas FC unit 60 and a battery 28 of the fuel cell system 1 are mounted on the body frame 21, and the hydrogen gas FC unit 60 is
And the battery 28 is disposed at a step position. The hydrogen fuel container 17 is mounted on the rear frame 26.

The vehicle body cover 39 is provided with a traveling air intake opening 391 at a position above the front wheels 32 on the front side, and a traveling air intake opening 39m at a position behind the front wheels 32. , 39m from the body wind 39
Introduced within. A ventilation opening 39n is provided in the vehicle body cover 39 in front of the occupant sitting on the seat 37 behind the hydrogen gas FC unit 60. A ventilation opening 39o is provided in the body cover 39 above the battery 28 in front of the seat 37.
And a body cover 39 around the seat 37.
Is provided with a ventilation opening 39p.

When the occupant needs warm air in cold weather, the battery 2 is directed toward the occupant from the ventilation openings 39n, 39o, 39p.
8 and the hot air that has cooled the hydrogen gas FC unit 60 are discharged.

Next, a fifth embodiment will be described with reference to FIGS.
It is shown in FIG. FIG. 13 is a side view of the motorcycle, and FIG. 14 is a plan view of a rear portion of the motorcycle.

In the embodiment of the motorcycle 20, FIG.
The same components as those in the embodiments of FIG. 3 to FIG. In the motorcycle 20, the front wheels 32 are braked by the regenerative brake 80. The hydrogen gas FC unit 60 and the battery 28 of the fuel cell system 1 are mounted on the vehicle body frame 21, and the hydrogen gas FC unit 60 is disposed above the vehicle body frame 21, and the battery 28 is disposed below the vehicle body frame 21. Have been.

The hydrogen fuel container 17 is mounted on the rear frame 26. DC-D for voltage conversion of drive system 2
The C converter 2b is mounted on the rear frame 26, and the hydrogen fuel container 17 is arranged on the DC-DC converter 2b for voltage conversion.

As described above, the voltage conversion DC-DC converter 2b and the hydrogen fuel container 17 are arranged close to each other, and the exhaust heat of the voltage conversion DC-DC converter 2b can be transmitted to the hydrogen fuel container 17. . The hydrogen fuel container 17 is made of a hydrogen absorbing alloy and has a DC-DC converter 2 for voltage conversion.
By transmitting the waste heat of b to the hydrogen fuel container 17, the heat of the DC-DC converter 2b for voltage conversion can be used for heating the hydrogen fuel, so that the fuel vaporization and activity are improved and the fuel is used up to the end. DC-DC for voltage conversion
Since the heat generated by the conversion loss of the converter 2b is used, the energy conversion efficiency of the entire vehicle is improved.

[0040]

As described above, according to the first aspect of the present invention, the ventilation opening serving as an outlet of the traveling wind taken in the vehicle body cover provided in the vehicle body cover provided in front of or around the occupant sitting on the seat. Warm air is discharged toward the occupants, and warm air can be supplied to the occupants in cold weather, improving comfort,
As a result, there is no need to generate warm air with a separate device in cold weather, and the exhaust energy can be used, so that the energy efficiency of the entire vehicle increases.

According to the second aspect of the present invention, the voltage conversion D
Since the exhaust heat of the C-DC converter can be transmitted to the hydrogen fuel container, the heat of the DC-DC converter for voltage conversion can be used for heating the hydrogen fuel. The energy conversion efficiency of the entire vehicle is improved because heat generated by the conversion loss of the DC-DC converter for voltage conversion is used.

[Brief description of the drawings]

FIG. 1 is a diagram showing a fuel cell system and a drive system mounted on a motorcycle.

FIG. 2 is a side view of the motorcycle according to the first embodiment.

FIG. 3 is a plan view of the motorcycle.

FIG. 4 is a side view of a motorcycle according to a second embodiment.

FIG. 5 is a plan view of the motorcycle.

FIG. 6 is a front view of the motorcycle.

FIG. 7 is a side view of a motorcycle according to a third embodiment.

FIG. 8 is a plan view of the motorcycle.

FIG. 9 is a front view of the motorcycle.

FIG. 10 is a side view of a motorcycle according to a fourth embodiment.

FIG. 11 is a plan view of the motorcycle.

FIG. 12 is a front view of the motorcycle.

FIG. 13 is a side view of a motorcycle according to a fifth embodiment.

FIG. 14 is a plan view of a rear portion of the motorcycle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel cell system 2 Drive system 2b DC-DC converter for voltage conversion 17 Hydrogen fuel container 20 Motorcycle 37 Seat 39 Body cover

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masahisa Kuranishi 2500 Shinkai, Iwata-shi, Shizuoka Yamaha Motor Co., Ltd. (72) Inventor Soichi Shiozawa 2500 Shinkai, Iwata-shi, Shizuoka Yamaha Motor Co., Ltd.

Claims (2)

[Claims] 1. A motorcycle having a fuel cell system mounted inside a vehicle body cover and running by supplying electric power generated by the fuel cell system to a drive system, wherein the vehicle body cover has a traveling wind intake opening. A motorcycle characterized in that a ventilation opening is provided in a vehicle body cover in front of or around a seat occupant in a seat to serve as an outlet for traveling wind taken into the vehicle body cover. 2. A motorcycle having a fuel cell system mounted in a vehicle body cover and running by supplying electric power generated by the fuel cell system to a drive system, comprising: a DC-DC converter for voltage conversion of the drive system; A motorcycle, wherein a hydrogen fuel container of the fuel cell system is disposed close to the fuel cell system, and the exhaust heat of the DC-DC converter for voltage conversion can be transmitted to the hydrogen fuel container.