JP2008126919A - Fuel cell vehicle - Google Patents

Abstract

A fuel cell vehicle capable of maintaining a sufficient heating function by suppressing a decrease in heat exchange efficiency of a heating device due to accumulation of ice and snow even in a low temperature environment.
A heat pump type heating device having an outdoor heat exchanger, a fuel cell system having a fuel cell radiator for cooling the fuel cell, and a fuel cell radiator on the front side of the vehicle. The fuel cell vehicle 10 includes a radiator grill 14 disposed, and is configured such that outside air supplied via the radiator grill 14 sequentially passes through the outdoor heat exchanger 32 and the fuel cell radiator 24. . In the space between the radiator grill 14 and the outdoor heat exchanger 32, ice / snow accumulation suppressing means (mesh member 45) for suppressing the accumulation of ice / snow on the outdoor heat exchanger 32 is disposed.
[Selection] Figure 3

Description

  The present invention relates to a fuel cell vehicle equipped with a heating device.

  Conventionally, what has a heat pump type structure as an air-conditioning system of vehicles is adopted. The heat pump type air conditioning system is provided with a heat medium circulation system for circulating the heat medium, and an outdoor heat exchanger having a large number of ventilation holes is provided so as to be able to exchange heat with the outside air, and a part to be heated and cooled Is provided so that the air supplied into the vehicle can be cooled or heated, and the heat medium is circulated between the outdoor heat exchanger and the heating / cooling target part. During operation of such an air conditioning system, the heat medium circulates through the heat medium circulation system, whereby heat exchange is performed in the outdoor heat exchanger and heat exchange is performed in the heating / cooling target portion. For example, at the time of cooling, heat is absorbed by the heating / cooling target portion and is radiated by the outdoor heat exchanger. On the other hand, at the time of heating, contrary to at the time of cooling, heat is absorbed by the outdoor heat exchanger and is radiated from the object to be heated and cooled. Therefore, the outdoor heat exchanger is maintained at a low temperature during heating.

  In a fuel cell vehicle equipped with a fuel cell system, a cooling water circulation system for the fuel cell is provided in order to dissipate heat generated in the fuel cell during power generation, and the radiator for the fuel cell of the cooling water circulation system is installed in the radiator grille. It is provided in the rear. In addition, various electronic devices that use the generated power (for example, motors that convert power into driving force) generate heat during operation, so that the generated heat is dissipated separately from the coolant circulation system for the fuel cell. A cooling water circulation system including a radiator for electronic equipment is provided. The radiator for a fuel cell and the radiator for an electronic device exclusively radiate heat generated in the fuel cell or the electronic device, and both are maintained at a high temperature during operation. When a heat pump type air conditioning system is mounted on such a fuel cell vehicle, an outdoor heat exchanger for the air conditioning system is provided separately from the radiator for the fuel cell and the radiator for the electronic device.

An engine-equipped vehicle is also provided with an engine coolant circulation system for radiating heat generated during engine operation, and an engine radiator is provided behind the radiator grille. When a heat pump type air conditioning system is mounted on an engine-equipped vehicle, an outdoor heat exchanger for the air conditioning system is provided separately from the engine radiator. In such an engine-equipped vehicle, various techniques for preventing the cooling water from being overcooled by the engine radiator until the temperature reaches a predetermined temperature range after the engine is started have been proposed. For example, a technique for preventing overcooling that occurs while the cooling water temperature is low has been proposed by providing a shutter member on a radiator grill disposed in front of the engine radiator (see, for example, Patent Document 1).
JP 58-53516 A

  By the way, since the outdoor heat exchanger of the heat pump type air conditioning system absorbs heat during heating, the temperature rises during operation like a fuel cell radiator in a fuel cell vehicle and an engine radiator in an engine-equipped vehicle. In contrast, it is maintained at a low temperature during operation.

  For this reason, under low-temperature environment such as below freezing point, when snow and snow adheres to the outdoor heat exchanger, the snow and snow adheres and accumulates without melting, and many vent holes of the outdoor heat exchanger are likely to be blocked, The efficiency of heat exchange of the outdoor heat exchanger will decrease. In addition, when an outdoor heat exchanger is disposed in front of a fuel cell radiator or engine radiator, it is difficult to supply outside air to the fuel cell radiator or engine radiator, and the heat of the cooling water circulation system is reduced. This also reduces the efficiency of exchange.

  The present invention has been made in view of such circumstances, and a fuel cell vehicle capable of maintaining a sufficient heating function by suppressing a decrease in heat exchange efficiency of a heating device due to accumulation of ice and snow even in a low temperature environment. The purpose is to provide.

  In order to achieve the above object, a fuel cell vehicle according to the present invention has an outdoor heat exchanger having a large number of vent holes, and circulates a heat medium between the outdoor heat exchanger and a heating target portion, thereby the outdoor heat exchanger. A heating device configured to absorb heat from outside air passing through the heat and dissipate heat at the heating target portion, a fuel cell system having a fuel cell radiator for cooling the fuel cell, and a vehicle front side of the fuel cell radiator An outdoor heat exchanger is disposed between the radiator grill and the fuel cell radiator, and the outside air supplied via the radiator grill is used for the outdoor heat exchanger and the fuel cell. A fuel cell vehicle configured to sequentially pass through a radiator, wherein the ice is disposed in a space between the radiator grille and the outdoor heat exchanger and suppresses accumulation of ice and snow on the outdoor heat exchanger. Those with a deposit control means.

  If such a configuration is adopted, since the ice / snow accumulation suppressing means is disposed in the space between the radiator grille and the outdoor heat exchanger, it is possible to prevent the ice / snow from flowing into the outdoor heat exchanger with the outside air. In an outdoor heat exchanger that is maintained at a low temperature during operation, it is possible to prevent a large number of vent holes from being blocked by clogging due to ice and snow. For this reason, even in a low-temperature environment, the efficiency of heat exchange with the outside air is unlikely to decrease, and a sufficient heating function can be maintained. Further, since the outside air cooled by the heat exchange in the outdoor heat exchanger can be supplied to the fuel cell radiator, it is possible to improve the heat exchange efficiency of the fuel cell radiator.

  In the fuel cell vehicle, it is possible to employ ice / snow accumulation suppressing means having an opening / closing member that allows or blocks passage of outside air supplied via the radiator grill.

  By adopting such a configuration, if the open / close member is closed, it is possible to prevent the outside air from passing through and suppress the supply of ice and snow together with the outside air to the outdoor heat exchanger, thereby suppressing the accumulation of ice and snow in the outdoor heat exchanger. easy.

  In the fuel cell vehicle, ice / snow accumulation suppressing means having a mesh member having a mesh size smaller than the diameter of the vent hole of the outdoor heat exchanger may be employed.

  By adopting such a configuration, ice and snow having a size larger than the mesh size of the mesh member can be captured by the mesh member, so that ice and snow having a size larger than the mesh size is prevented from being supplied to the outdoor heat exchanger. Can do. In addition, ice and snow smaller than the mesh size of the mesh member passes through the mesh member and the passage hole of the outdoor heat exchanger. For this reason, it is easy to suppress the accumulation of ice and snow in the outdoor heat exchanger.

  In the fuel cell vehicle, ice / snow accumulation suppressing means having a radiator for electronic devices for cooling various electronic devices of the fuel cell system may be employed.

  By adopting such a configuration, the electronic device radiator is heated by the heat generated by various electronic devices, so that the ice and snow supplied together with the outside air can be melted by the electronic device radiator. It becomes difficult to be supplied. Moreover, the waste heat of the radiator for electronic devices can be absorbed by the outdoor heat exchanger, so that energy can be used efficiently and waste is reduced.

  In the fuel cell vehicle, an electronic device radiator configured to be inserted into a space between a radiator grille and an outdoor heat exchanger or to move out of the space may be employed.

  When such a configuration is adopted, an outdoor heat exchanger with a higher ram pressure can be applied to the outside air supplied from the radiator grill by allowing the radiator for electronic equipment to escape from the space between the radiator grill and the outdoor heat exchanger as necessary. And the heat exchange efficiency of the outdoor heat exchanger and the fuel cell radiator can be improved.

  Also, in the fuel cell vehicle, an outside air intake portion for taking in outside air from a position different from the radiator grille, and an air flow that sequentially passes outside air taken in from the outside air intake portion to the outdoor heat exchanger and the fuel cell radiator. Generating a fan.

  If such a configuration is adopted, the ice / snow accumulation suppressing means is blocked by ice / snow, and even if it becomes difficult for the outside air supplied by the ram pressure from the radiator grill to be supplied to the outdoor heat exchanger and the radiator for the fuel cell, a position different from that of the radiator grille. Outside air can be taken in from an outside air intake section (for example, a vehicle side surface or a vehicle top surface), and the outside air can be forced to flow to the outdoor heat exchanger and the fuel cell radiator by a fan. Accordingly, it is possible to suppress a decrease in the heat exchange efficiency of the outdoor heat exchanger and the fuel cell radiator.

  Further, the fuel cell vehicle includes a cover that covers the opening of the outside air intake portion, and the cover can be opened on the vehicle rear side of the opening.

  When such a configuration is adopted, the outside air supplied from the opening of the outside air intake portion hardly contains ice and snow, and even if the outside air is taken in and supplied to the outdoor heat exchanger, it is difficult to supply ice and snow to the outdoor heat exchanger. Deposition can be suppressed.

  Further, in the fuel cell vehicle, a fuel cell system having a control unit disposed below at least a part of the outside air intake unit is employed, and ice and snow that is disposed on the control unit and accumulates ice and snow that flows in along with the outside air is accumulated. An outside air intake portion having a deposition portion can be employed.

  By adopting such a configuration, even if the outside air supplied from the outside air intake portion contains ice and snow, it can be accumulated on the ice and snow accumulation portion of the outside air intake portion, and the ice and snow are caused by the heat generated in the control unit of the fuel cell system. Can be melted. Therefore, it is possible to effectively suppress the supply of ice and snow to the outdoor heat exchanger.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the fuel cell vehicle which can maintain the sufficient heating function by suppressing the fall of the heat exchange efficiency of the heating apparatus by the accumulation of ice and snow even in a low temperature environment.

  Hereinafter, a fuel cell vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[First Embodiment]
First, the configuration of the fuel cell vehicle 10 according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the fuel cell vehicle 10 is provided with an engine compartment 11 on the front side of the vehicle, and a vehicle compartment 12 on which a passenger can get on the vehicle rear side of the engine compartment 11. In the engine compartment 11, a polymer electrolyte fuel cell 21 constituting the fuel cell system 20 is disposed, and various electronic devices such as a PCU (Power Control Unit) 22 as a control unit and a drive motor 23 are provided. Further, various members constituting an air conditioning system 30 as a heating device for the passenger compartment 12 are disposed.

  As shown in FIGS. 1 and 2, the fuel cell system 20 includes a fuel cell cooling water circulation system 25 having a fuel cell radiator 24 for releasing heat generated in the fuel cell 21 during power generation, a PCU 22 and a drive unit. An electronic device cooling water circulation system 27 having an electronic device radiator 26 for releasing heat generated in various electronic devices such as the motor 23 is provided. The fuel cell coolant circulation system 25 and the electronic device coolant circulation system 27 are independent.

  The air conditioning system 30 includes a heat medium circulation system 33 having an indoor heat exchanger 31 as a heating target part capable of supplying warm air into the passenger compartment 12 and an outdoor heat exchanger 32 capable of exchanging heat by outside air. It has a heat pump type structure. The heat medium circulation system 33 is also independent of the fuel cell cooling water circulation system 25 and the electronic device cooling water circulation system 27.

  As shown in FIG. 4, the outdoor heat exchanger 32 is formed by integrally joining a large number of fins 41 and flow paths 42, and a large number of meshes are passed through the fins 41 and the flow paths 42 in the vehicle front-rear direction. Vent holes 43 are provided. The outdoor heat exchanger 32 is configured so that the outside air is supplied by the ram pressure from the front side of the vehicle during traveling, or the outside air introduced into the engine compartment 11 is forcibly sucked by the electric fan 44 so as to open the air holes 43. By letting it pass, heat exchange between the heat medium flowing in the flow path 42 and the outside air is possible.

  In the present embodiment, as shown in FIG. 3, the radiators 24, 26 and the outdoor heat exchanger 32 are arranged side by side so as to overlap each other when viewed from the front of the vehicle. The electronic device radiator 26, the outdoor heat exchanger 32, and the fuel cell radiator 24 are arranged in this order. The fuel cell radiator 24 and the outdoor heat exchanger 32 are arranged on the vehicle rear side of the radiator grille 14 so as to overlap the radiator grille 14 when viewed from the front of the vehicle, and are supplied via the radiator grille 14. Outside air passes through the outdoor heat exchanger 32 and the fuel cell radiator 24. The electronic device radiator 26 is disposed so as to substantially overlap the bumper 15 when the vehicle is viewed from the front.

  Further, in the present embodiment, as ice / ice accumulation control means for suppressing the accumulation of ice / snow on the outdoor heat exchanger 32 in the vicinity of the outdoor air intake side (that is, the radiator grill 14 side) of the outdoor heat exchanger 32. A mesh member 45 is provided. The mesh member 45 is made of, for example, a metal mesh or the like, and the maximum value of the mesh size of the mesh member 45 (the major diameter of the opening diameter) is shorter than the opening diameter of each vent hole 43 of the outdoor heat exchanger 32 as shown in FIG. It is set to be smaller than the diameter L1. In the present embodiment, the mesh member 45 is disposed in front of the electronic device radiator 26. However, the mesh member 45 may be disposed behind the electronic device radiator 26.

  In the fuel cell vehicle 10 of the present embodiment, as shown in FIGS. 5 and 6, outside air is taken into the engine compartment 11 separately from the radiator grille 14 in the front fender portion 17 on the side surface side of the vehicle body 16. For this purpose, a fixed louver 47 is provided as an outside air intake portion. The fixed louver 47 includes a plurality of fixed fins 48 that are inclined so as to open toward the rear side of the vehicle, and an opening 48a between the fixed fins 48 communicates with the engine compartment 11 through a flow path 49. The outside air can be taken in from the vehicle rear side to the front side.

  Next, the operation of the fuel cell vehicle 10 according to this embodiment will be described.

  In the fuel cell vehicle 10, hydrogen gas supplied from a hydrogen tank 18 mounted on the fuel cell vehicle 10 and air (oxidizing gas) supplied from a compressor (not shown) are supplied to the fuel cell 21. Thus, power generation is started, and the electric power obtained by the power generation is supplied to the drive motor 23 and the like via the PCU 22 to travel. During power generation or traveling, the fuel cell 21 is cooled by the fuel cell coolant circulation system 25, and the temperature of the value fuel cell 21 is maintained within a predetermined range. Various electronic devices such as the PCU 22 and the drive motor 23 are cooled by the electronic device cooling water circulation system 27, and the temperature of the electronic device is also maintained within a predetermined range.

  In the fuel cell cooling water circulation system 25 and the electronic device cooling water circulation system 27, the cooling water is circulated constantly or as necessary, and the amount of heat generated in the fuel cell 21 and the amount of heat generated in the electronic device are respectively changed to the fuel cell radiator 24. And in the radiator 26 for electronic devices, it discharges to the outside air supplied from the radiator grill 14 or the like.

  Further, during heating by the air conditioning system 30, the heat medium is circulated through the heat medium circulation system 33, heat is radiated by compression or the like in the indoor heat exchanger 31, and heating is performed by supplying warm air into the passenger compartment 12. . The lost heat quantity is absorbed by the outdoor heat exchanger 32 from the outside air supplied from the radiator grill 14 or the like.

  Under a low temperature environment, particularly under conditions where ice and snow are included in the outside air, outside air is introduced from the radiator grill 14 for heat exchange between the radiator 24 for the fuel cell, the radiator 26 for the electronic device, and the outdoor heat exchanger 32. Then, ice and snow are introduced into the engine compartment 11 by introducing ice and snow together with the outside air or by freezing moisture in the introduced outside air. In the fuel cell radiator 24 and the electronic device radiator 26, the temperature is higher than 0 ° C. except for the initial stage of the starter. Therefore, the ice and snow are melted, but the outdoor heat exchanger 32 is maintained at a low temperature. For this reason, when ice or snow adheres, it is difficult to melt and is easily deposited as it is.

  However, in the fuel cell vehicle 10 according to the present embodiment, the mesh member 45 as the ice / snow accumulation suppressing means is disposed in the space between the radiator grille 14 and the outdoor heat exchanger 32, so the outdoor heat exchanger The outside air that has passed through the mesh member 45 is supplied to 32. Since the mesh size of the mesh member 45 is smaller than the diameter of the vent hole 43 of the outdoor heat exchanger 32, ice and snow contained in the outside air that has passed through the mesh member 45 is smaller than the vent hole 43 of the external exchanger 32. It will be a thing. For this reason, the ice and snow that has passed through the mesh member 45 can pass through the numerous vent holes 43 of the outdoor heat exchanger 32.

  Accordingly, it is possible to prevent the ice and snow from flowing together with the outside air and accumulating in the outdoor heat exchanger 32, and in the outdoor heat exchanger 32 that is maintained at a low temperature during operation, a large number of air holes are blocked by clogging due to the ice and snow. It can be suppressed. For this reason, even in a low-temperature environment, the efficiency of heat exchange with the outside air is unlikely to decrease, and a sufficient heating function can be maintained. Further, since the outside air cooled by the heat exchange in the outdoor heat exchanger 32 can be supplied to the fuel cell radiator 24, the efficiency of heat exchange of the fuel cell radiator 24 can be improved. Moreover, it is not necessary to interrupt heating during operation to remove the accumulated snow and ice, and it is possible to continue a good heating state.

  When outside air passes through the mesh member 45, ice and snow having a size larger than the mesh size of the mesh member 45 is prevented from being captured by the mesh member 45 and supplied to the outdoor heat exchanger 32. In some cases, the ice and snow captured by the member 45 is accumulated on the mesh member 45 without being melted, and the mesh member 45 may be clogged. When such a situation occurs, the outside air supplied by the ram pressure from the radiator grille 14 becomes difficult to be supplied to the outdoor heat exchanger 32 and the fuel cell radiator 24.

  However, in the present embodiment, since the fixed louver 47 as the outside air intake portion is provided in the front fender portion 17 of the vehicle body 16, it is possible to take in outside air from the fixed louver 47 through the intake passage 49. Moreover, since the fixed fins 48 are opened rearward from the vehicle rear side toward the front side, it is difficult for ice and snow to be introduced together with the outside air. Then, the outside air can be forced to flow through the outdoor heat exchanger 32 and the fuel cell radiator 24 by the electric fan 44. As a result, even if the mesh member 45 is closed, it is possible to suppress a decrease in the heat exchange efficiency of the outdoor heat exchanger 32 and the fuel cell radiator 24.

[Second Embodiment]
Next, a fuel cell vehicle according to a second embodiment of the present invention will be described with reference to FIG.

  The fuel cell vehicle according to the present embodiment includes a cover 51 that covers the opening 48a of the fixed louver 47 from the outer surface side of the vehicle body. The cover 51 covers the vehicle front side, the side side, the upper side, and the lower side of the fixed louver 47, and has a shape having an opening portion 51a that is opened on the vehicle rear side from the opening portion 48a of the fixed louver 47. Other configurations are the same as those of the first embodiment.

  Even in the fuel cell vehicle according to the present embodiment, the same effects as those of the first embodiment can be obtained. In addition, outside air taken in from the intake passage 49 of the fixed louver 47 during the travel is introduced into the cover 51 so as to flow backward from the opening portion 51 a behind the opening 48 a in the traveling direction, and further through the intake passage 49. Since it is introduced into the engine compartment 11, it is difficult for ice and snow to be introduced into the engine compartment 11. Therefore, it is possible to effectively suppress the accumulation of ice and snow on the electronic device radiator 26, the outdoor heat exchanger 32, and the fuel cell radiator 24.

[Third Embodiment]
Next, a fuel cell vehicle according to a third embodiment of the present invention will be described with reference to FIG.

  In the fuel cell vehicle according to the present embodiment, instead of the mesh member 45, as the ice / snow accumulation suppressing means, a large number of rotatable plate-like fins 53 are provided, and the inclination of each plate-like fin 53 is changed. A movable louver 54 is employed as an opening and closing member configured to be openable and closable. The movable louver 54 is configured to automatically open and close (for example, according to the temperature of the outside air). The movable louver 54 allows the outside air to pass from the radiator grille 14 by opening, and prevents the outside air from passing by closing. It is possible. Other configurations are the same as those of the first embodiment.

  Even in the fuel cell vehicle according to the present embodiment, if the movable louver 54 is closed, it is possible to prevent the outside air from passing through and prevent the ice and snow from being supplied to the outdoor heat exchanger 32 together with the outside air. The same effects as those of the first embodiment can be obtained.

[Fourth Embodiment]
Next, a fuel cell vehicle according to a fourth embodiment of the present invention will be described with reference to FIG.

  In the fuel cell vehicle according to the present embodiment, the mesh member 45 and the movable louver 54 are not provided on the vehicle front side of the outdoor heat exchanger 32, and instead, disposed on the vehicle front side of the outdoor heat exchanger 32. The electronic device radiator 26 </ b> A is formed large, and the electronic device radiator 26 </ b> A is disposed so as to cover the front surface of the outdoor heat exchanger 32 in a vehicle front view. That is, in the present embodiment, the electronic device radiator 26A functions as ice / snow accumulation suppressing means. Other configurations are the same as those of the first embodiment.

  In the fuel cell vehicle according to the present embodiment, since the outside air introduced from the radiator grille 14 is supplied to the outdoor heat exchanger 32 after passing through the radiator 26A for electronic equipment, ice and snow introduced together with the outside air are It adheres to the radiator 26A for electronic equipment, and it becomes difficult for ice and snow to reach the outdoor heat exchanger 32. For this reason, the effect similar to 1st Embodiment can be acquired.

  Further, the electronic device radiator 26 </ b> A releases heat generated in each electronic device such as the PCU 22 and the drive motor 23, and is thus heated during operation. Therefore, it is easy to prevent the ice and snow supplied together with the outside air from being melted by the electronic device radiator 26 </ b> A and supplied to the outdoor heat exchanger 32. Moreover, since waste heat of each electronic device is supplied from the radiator 26A for the electronic device to the outdoor heat exchanger 32 and can be absorbed by the outdoor heat exchanger 32, energy can be used efficiently and waste is reduced.

[Fifth Embodiment]
Next, a fuel cell vehicle according to a fifth embodiment of the present invention will be described using FIG.

  In the fuel cell vehicle according to the present embodiment, the size of the electronic device radiator 26B is different from that of the fourth embodiment, the vertical dimension is approximately the same as the vertical dimension of the radiator grille 14, and the width dimension is outdoor. It is comparable to the front surface of the heat exchanger 32. The electronic device radiator 26B is configured to be movable up and down by an elevator (not shown). When the electronic device radiator 26B is lowered as shown in FIG. 10, the radiator 26B is disposed between the radiator grill 14 and the outdoor heat exchanger 32. If it escapes from this space and raises, it will be inserted between the radiator grille 14 and the outdoor heat exchanger 32. As shown in FIG. Other configurations are the same as those of the fourth embodiment.

  In the fuel cell vehicle according to the present embodiment, under conditions where ice and snow are accumulated by outside air introduced from the radiator grill 14 (under a low temperature environment), if the radiator 26B for electronic devices is raised, As in the fourth embodiment, it is possible to prevent ice and snow from accumulating on the outdoor heat exchanger 32. On the other hand, under conditions where ice and snow do not accumulate, if the radiator 26B for electronic devices is lowered, the outside air introduced from the radiator grill 14 is transferred to the outdoor heat exchanger 32 and the fuel cell radiator 24 at a higher ram pressure. The heat exchange efficiency of the outdoor heat exchanger 32 and the fuel cell radiator 26 can be improved. Furthermore, in the fuel cell vehicle according to the present embodiment, since the area of the electronic device radiator 26B can be reduced as compared with the fourth embodiment, overcooling of each electronic device can be prevented.

[Sixth Embodiment]
Next, a fuel cell vehicle according to a sixth embodiment of the present invention will be described with reference to FIGS. 11 and 12.

  In the fuel cell vehicle according to the present embodiment, the outside air for taking outside air into the engine compartment 11 from the opening 61 provided at a position above the radiator grill 14 (a position different from the portion facing the outdoor heat exchanger 32). An intake part (intake flow path) 62 is provided. The outside air intake 62 is provided along the upper part of the vehicle body 16 via the PCU 22. The outside air intake unit 62 has an ice / snow accumulation unit 63 on the PCU 22 for accumulating the ice / snow supplied together with the outside air. The ice / snow accumulation portion 63 has a plurality of baffle plates 64 formed so as to protrude into the flow path of the outside air intake portion 62, and is deflected when outside air flows in the outside air intake portion 62. Ice and snow contained in the outside air is likely to accumulate.

  Also, as shown in FIG. 12, a communication port 65 to the engine compartment 11 is formed on the downstream side of the ice / snow accumulation part 63 of the outside air intake part 62 so that the outside air from which the ice / snow is separated is supplied to the inside. It is configured. In addition, the bottom part 63a of the ice / snow accumulation part 63 is provided so as to be inclined so that water in the ice / snow accumulation part 63 can be discharged from the drain port 66. Other configurations are the same as those of the first embodiment.

  Even in the fuel cell vehicle according to the present embodiment, the same effects as those of the first embodiment can be obtained. Moreover, even if the outside air supplied from the outside air intake unit 62 contains ice and snow, it can be separated from the outside air by accumulating the ice and snow in the ice and snow accumulating unit 63, and the accumulated ice and snow is melted by the heat generated in the PCU 22. The water can be drained from the drain port 66. Therefore, it is possible to effectively suppress the supply of ice and snow to the outdoor heat exchanger 32.

1 is a schematic view showing a fuel cell vehicle according to a first embodiment of the present invention. It is a schematic block diagram which shows each cooling system of the fuel cell vehicle shown in FIG. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning around the outdoor heat exchanger of the heating apparatus of the fuel cell vehicle shown in FIG. FIG. 2 shows an outdoor heat exchanger of the fuel cell vehicle shown in FIG. 1, (A) is a front view, and (B) is an enlarged view of part B of (A). It is a figure which shows the front fender of the fuel cell vehicle shown in FIG. It is a schematic sectional drawing of the front fender shown in FIG. It is a schematic sectional drawing of the front fender of the fuel cell vehicle which concerns on 2nd Embodiment of this invention. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning around the outdoor heat exchanger of the heating apparatus of the fuel cell vehicle which concerns on 3rd Embodiment of this invention. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning around the outdoor heat exchanger of the heating apparatus of the fuel cell vehicle which concerns on 4th Embodiment of this invention. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning around the outdoor heat exchanger of the heating apparatus of the fuel cell vehicle which concerns on 5th Embodiment of this invention. It is a schematic longitudinal cross-sectional view which shows arrangement | positioning around the outdoor heat exchanger of the heating apparatus of the fuel cell vehicle which concerns on 6th Embodiment of this invention. FIG. 12 is a schematic cross-sectional view showing an ice and snow accumulation portion of the heating device of the fuel cell vehicle shown in FIG. 11.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Fuel cell vehicle, 14 ... Radiator grille, 20 ... Fuel cell system, 21 ... Fuel cell, 22 ... PCU (control part), 24 ... Radiator for fuel cells, 26, 26A, 26B ... Radiator for electronic equipment, 30 ... Air conditioning system (heating device), 31 ... Indoor heat exchanger (heating target part), 32 ... Outdoor heat exchanger, 43 ... Vent, 44 ... Electric fan, 45 ... Mesh member (ice and snow accumulation suppression means), 47 ... Fixed Louver (outside air intake part), 48a ... opening, 51 ... cover, 54 ... movable louver (opening / closing member, ice / snow accumulation suppressing means), 62 ... outside air intake part, 63 ... ice / snow accumulation part.

Claims (8)

An outdoor heat exchanger having a large number of ventilation holes is provided, a heat medium is circulated between the outdoor heat exchanger and the heating target part, and heat is absorbed from the outside air passing through the outdoor heat exchanger, and heat is radiated from the heating target part. A heating device configured to cool the fuel cell, a fuel cell system having a fuel cell radiator for cooling the fuel cell, and a radiator grill disposed on the vehicle front side of the fuel cell radiator, A heat exchanger is disposed between the radiator grill and the fuel cell radiator so that outside air supplied via the radiator grill sequentially passes through the outdoor heat exchanger and the fuel cell radiator. A fuel cell vehicle configured as follows:
An ice / snow accumulation suppressing unit that is disposed in a space between the radiator grille and the outdoor heat exchanger and suppresses accumulation of ice / snow on the outdoor heat exchanger;
Fuel cell vehicle. The ice / snow accumulation suppressing means has an opening / closing member that allows or blocks passage of outside air supplied via the radiator grille,
The fuel cell vehicle according to claim 1. The ice / snow accumulation suppressing means has a mesh member including a mesh having a size smaller than the diameter of the vent hole of the outdoor heat exchanger.
The fuel cell vehicle according to claim 1. The ice / snow accumulation suppressing means has an electronic device radiator for cooling various electronic devices of the fuel cell system.
The fuel cell vehicle according to any one of claims 1 to 3. The electronic device radiator is configured to be inserted into or removed from the space between the radiator grille and the outdoor heat exchanger.
The fuel cell vehicle according to claim 4. An outside air intake for taking in outside air from a position different from the radiator grill;
A fan that generates an air flow that sequentially passes outside air taken in from the outside air intake section to the outdoor heat exchanger and the radiator for the fuel cell,
The fuel cell vehicle according to any one of claims 1 to 5. A cover that covers the opening of the outside air intake section;
The cover is opened on the vehicle rear side with respect to the opening.
The fuel cell vehicle according to claim 6. The fuel cell system has a control unit disposed below at least a part of the outside air intake unit,
The outside air intake part has an ice / snow accumulation part that is disposed on the control part and accumulates ice / snow that flows in along with the outside air.
The fuel cell vehicle according to claim 6 or 7.

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