JP2012035825A - Cooling structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure of a vehicle in which an inside of a luggage space is utilized even when a cooling fan is disposed.SOLUTION: The cooling structure is mounted on the vehicle, and includes: an IPU (intelligent power unit) 19 for supplying an electric power to a motor; and the cooling fan 51 for cooling the IPU 19. The IPU 19 and the cooling fan 51 are arranged below the luggage space 18. The cooling fan 51 is arranged in the rear of the IPU, and an air outlet 68 of the cooling fan 51 is arranged along a rear panel 29.

Description

  The present invention relates to a vehicle cooling structure for cooling an IPU (intelligent power unit) mounted on an electric vehicle, a hybrid vehicle, or the like.

  In an electric vehicle, a hybrid vehicle, and the like, an IPU having a high voltage battery module that is a drive energy source of a motor (electric motor) is mounted under the floor in a luggage space. In such a vehicle, since the IPU generates heat by driving the motor, the IPU is cooled by a cooling fan. Specifically, an IPU is disposed at the center of the luggage space behind the rear seat, and a cooling fan is attached to the upper surface of the IPU (see, for example, Patent Document 1).

JP 2007-99149 A

  By the way, recently, a technique for expanding the volume in the luggage space without changing the vehicle body dimensions by reducing the floor of the vehicle has been developed.

  However, in the configuration of Patent Document 1, since the cooling fan is attached to the upper surface of the IPU, the combined height of the IPU and the cooling fan becomes high. Further, in this state, since the IPU and the cooling fan are arranged at the center portion in the luggage space, there is a problem that the dead space in the luggage space increases and the inside of the luggage space cannot be effectively used.

  Therefore, the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a vehicle cooling structure that can effectively utilize the inside of the luggage space even when a cooling fan is provided.

  In order to solve the above-described problems, the invention described in claim 1 is an electric device (for example, an implementation) that is mounted on a vehicle (for example, the hybrid vehicle 10 in the embodiment) and supplies electric power to the traveling motor of the vehicle. A vehicle having an IPU 19) and a cooling device for cooling the electric device, wherein the electric device and the cooling device are arranged below a luggage space (for example, the luggage space 18 in the embodiment) at the rear of the vehicle. In the cooling structure, the cooling device includes a cooling fan (for example, the cooling fan 51 in the embodiment) disposed at the rear of the electric device, and an intake unit and an exhaust unit (for example, the exhaust in the embodiment) of the cooling fan. At least one of the ports 68) or a duct portion (for example, an implementation type) connected to the cooling fan. Exhaust duct 73) is the rear wall of the vehicle at (e.g., is characterized in that it is disposed along the rear panel 29) in the embodiment.

  The invention described in claim 2 is characterized in that the cooling fan is arranged so as to be shifted in the left-right direction when viewed from the vehicle traveling direction with respect to the electric device.

  According to a third aspect of the present invention, the cooling fan is supported by a fan stay located on the front side (for example, the fan stay 52 in the embodiment), and a load is input to the cooling fan from the rear. A fragile portion (for example, the fragile portions 64 and 65 in the embodiment) is formed as a starting point when folded.

  According to a fourth aspect of the present invention, the rear seat of the vehicle (for example, the rear seat 16 in the embodiment) folds the seat back (for example, the seat back 15 in the embodiment) forward, and thereby the seat cushion (for example, the embodiment). The seat cushion 14) is configured to be movable downward.

  In a fifth aspect of the invention, a fuel tank (for example, the fuel tank 17 in the embodiment) in which fuel to be supplied to an internal combustion engine mounted on the vehicle is stored is disposed below the front seat of the vehicle. It is characterized by.

  According to a sixth aspect of the present invention, there is provided an air intake opening that is opened in a vehicle interior, and a cooling air passage that extends between the air intake opening and the electric device is an outer wall portion of the vehicle (for example, a rear part in the embodiment). It is characterized by being arranged along the inner side of the inner panel 28).

  According to the first aspect of the present invention, even if any one of the intake portion and the exhaust portion of the cooling fan or the duct portion connected thereto protrudes upward, the protruding portion is the rear end of the vehicle. It will be arranged in the part. Thereby, compared with the structure which a cooling fan protrudes upwards in the center part in the luggage space like the past, a protrusion part does not become obstructive in the luggage space. That is, even when a cooling fan is provided, the dead space in the passenger compartment can be reduced and the inside of the luggage space can be effectively utilized.

  According to the invention described in claim 2, even if the cooling fan moves forward due to a load at the time of rear collision, since it does not contact the electric device, it is possible to prevent a short circuit or breakage of the electric device. .

  According to the invention described in claim 3, by forming the fragile portion in the fan stay that supports the cooling fan, the fan stay is bent starting from the fragile portion when a load is input from the rear. In other words, since the forward movement of the cooling fan is positively allowed, the cooling fan smoothly moves forward without shifting in the vehicle width direction, and the contact with the electric device can be reliably prevented.

  According to the invention described in claim 4, when the seat back is folded, the back surface of the seat back and the floor surface of the luggage space can be flattened, and the space in the vehicle interior can be effectively utilized.

  According to the fifth aspect of the present invention, since the fuel tank is disposed below the front seat, the floor can be lowered, so that the rear seat can be further lowered when the seat back is folded. . As a result, the back surface of the seat back and the floor surface of the luggage space can be surely flattened, and the space in the vehicle compartment can be effectively utilized.

  According to the invention described in claim 6, by arranging the cooling air passage along the inside of the outer wall portion of the vehicle, it is possible to effectively utilize the space in the vehicle interior and to enlarge the space in the vehicle interior. it can.

It is a schematic block diagram (side view) of a hybrid vehicle. It is sectional drawing which looked at the vehicle rear part from the side. It is sectional drawing which looked at the vehicle rear part from back. It is a top view of the vehicle rear part. It is sectional drawing which looked at the vehicle rear part at the time of a rear collision from the side.

(Hybrid vehicle)
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram (side view) of a hybrid vehicle. In the figure, the arrow FR indicates the front in the front-rear direction of the vehicle.
As shown in FIG. 1, a hybrid vehicle 10 (hereinafter referred to as a vehicle 10) of the present embodiment is a hatchback type vehicle including a tailgate 10 a that can open and close a rear opening of a vehicle body, and is a driving source for traveling. The engine (internal combustion engine) and the motor (electric motor) (not shown) are mounted on the front portion of the vehicle. The vehicle 10 includes a front seat 13 that is disposed on a front floor 21 and has a seat cushion 11 and a seat back 12, and a rear seat 16 that has a seat cushion 14 and a seat back 15.

  A fuel tank 17 for storing fuel supplied to the engine is disposed below the seat cushion 11 of the front seat 13 (below the front floor 21), and below the luggage space 18 behind the rear seat 16 is a motor. An IPU (electrical device) 19 (see FIG. 2) for driving is mounted. That is, the vehicle 10 of the present embodiment employs a so-called center tank layout in which the fuel tank 17 is disposed in the front-rear direction and the width direction center of the vehicle 10.

  The rear seat 16 is a so-called dive-down storage that allows the seat back 15 to tilt forward with respect to the seat cushion 14 and moves the entire seat downward and obliquely forward with the seat back 14 folded forward halfway. Is possible. In other words, the rear seat 16 dropped the rear seat 16 into the space in front of the step 23 in the seated state in which the seat back 14 is raised with respect to the seat cushion 14 (solid line D1 in FIG. 1) and the seat back 15 folded. It is configured to be movable to a dive down state (broken line D2 in FIG. 1). In the dive down state D2, the back surface of the seat back 12 and a floor board 27, which will be described later, constituting the bottom wall of the luggage space 18 are arranged flat. The front floor 21 is connected to a rear floor 22 that rises with a step 23 with respect to the front floor 21.

FIG. 2 is a cross-sectional view of the rear part of the vehicle as viewed from the side, and FIG.
As shown in FIGS. 2 and 3, at the rear part of the rear floor 22, an IPU storage part 26 in which the IPU 19 is stored is provided in the center part of the vehicle width. A panel (outer wall portion) 28 is provided. The IPU storage portion 26 includes a bottom wall portion 26a, side wall portions 26b provided on the front and left and right sides of the bottom wall portion 26a, and a rear panel 29 provided on the rear portion of the bottom wall portion 26a. It is formed in a box shape having a portion 25. The rear panel 29 is a member having an L-shaped cross section extending along the vehicle width direction, and constitutes a rear wall portion of the IPU storage portion 26.

  A rear end beam 31 having an L-shaped cross section extending along the vehicle width direction is provided at the upper end portion of the rear panel 29. The rear end beam 31 has a rear end and a lower end coupled to the rear panel 29, thereby forming a closed cross-sectional structure between the rear panel 29 and the rear end beam 31. A rear bumper (not shown) is attached behind the rear panel 29 and the rear end beam 31 so as to cover them. The IPU storage unit 26 is provided with a rear parcel shelf 32 so as to cover the upper opening 25.

  A rear lining 33 is provided above the rear end beam 31. The rear lining 33 is made of, for example, resin, and is formed so as to cover the lower inner periphery at the rear opening of the vehicle body. The rear lining 33 is formed in a stepped cross section that increases toward the rear, and the rear end portion (upper step portion) is disposed so as to cover the rear end beam 31, while the front end portion (middle step and lower step portion) is the rear parcel shelf. It extends to a position overlapping with the rear end portion of 32 as viewed from above. A floor board 27 is provided so as to cover the upper portion of the rear parcel shelf 32, and the upper space of the floor board 27 constitutes a luggage space 18.

FIG. 4 is a plan view of the rear portion of the vehicle. In FIG. 4, the description of the rear floor 22 and the like is omitted.
As shown in FIGS. 2 to 4, the above-described IPU 19 is obtained by unitizing each electrical device such as a battery module, an inverter unit, and a DC-DC converter unit (all not shown) in a casing 41. . The inverter unit converts direct current to alternating current when supplying power to the motor from the battery of the direct current power source. Also, when the vehicle 10 is decelerated, when the engine output or the kinetic energy of the vehicle 10 is converted into electrical energy and stored in the battery, the regenerative power generated by the motor that functions as a generator is converted from alternating current to direct current. The battery is charged. The DC-DC converter unit steps down the high-voltage direct current voltage converted by the inverter unit. The casing 41 is formed in a rectangular parallelepiped shape in which the vehicle width direction is the longitudinal direction and the front-rear direction is the short direction, and is disposed on the front side in the IPU storage unit 26. In this case, in the IPU storage unit 26, the front space constitutes the protection zone S1 in which the above-described IPU 19 is accommodated, and the rear space is deformed at the time of a rear collision, so that the crushable zone S2 for absorbing the impact load is formed. It is composed.

  A pair of cross members (a first cross member 42a and a second cross member 42b) are provided in the upper opening 25 of the IPU storage unit 26 so as to extend between the IPU storage units 26 along the width direction. The cross members 42a and 42b are hollow members having a rectangular shape in cross section, and extend in parallel with each other along the vehicle width direction with a space equivalent to the width in the front-rear direction of the IPU 19 (casing 41). Yes. The cross members 42a and 42b are fixed to the rear floor 22 on both sides of the IPU storage portion 26 in the vehicle width direction. The IPU 19 is suspended between the cross members 42a and 42b by fastening the bolts 43 (see FIG. 4) to both ends in the front-rear direction on the upper surface of the casing 41 of the IPU 19 and the cross members 42a and 42b. It is supported. The rear parcel shelf 32 described above is disposed on each cross member 42a, 42b.

  A hollow cooling air intake passage 44 (see FIG. 4) is provided on one end side in the vehicle width direction of the IPU 19. One end of the cooling air intake passage 44 is fixed to the upper surface of the IPU 19 (casing 41) and opens upward, while the other end is fixed to the side of the casing 41 and opens into the casing 41. The opening on one end side of the cooling air intake passage 44 is provided with an air intake duct (cooling air passage) (not shown) that connects between the vehicle interior and the inside of the casing 41. The intake duct is, for example, a hollow member having a rectangular cross section formed by bending with a synthetic resin, and is covered by a side lining (not shown) that is an interior member attached to the inside of the rear inner panel 28 of the vehicle 10. ing. The intake duct has an intake side opening that opens into the passenger compartment. Thus, by arranging the intake duct in the dead space between the rear inner panel 28 and the side lining, the space in the vehicle interior can be used effectively and the space in the vehicle interior can be expanded.

  Here, a fan stay 52 that supports a cooling fan (cooling device) 51 to be described later is connected to the outer side in the vehicle width direction than the IPU 19 in the cross members 42a and 42b. The fan stay 52 is a member having a U-shaped cross section when viewed from the extending direction (front-rear direction), and is formed so as to bridge between the cross members 42a and 42b outside the IPU 19 in the vehicle width direction. The main stay 53 has a pair of branch stays 54 and 55 branched from the rear end of the main stay 53. The main stay 53 extends in the front-rear direction, the front end is fastened to the upper surface of the front first cross member 42a by a bolt 56, and the rear end is bolt 57 to the upper surface of the rear second cross member 42b. It is concluded by. Further, the main stay 53 is formed so as to be wider from the center in the extending direction to the front-rear direction.

  Each of the branch stays 54 and 55 has a first branch stay 54 and a second branch stay 55 that branch in a V shape from the rear end of the main stay 53. The first branch stay 54 extends rearward from the rear end of the main stay 53 over the second cross member 42b, and a mounting piece 61 for mounting a cooling fan is formed at the rear end portion. On the other hand, the second branch stay 55 branches from the main stay 53 in front of the second cross member 42b and extends obliquely downward as it goes rearward. Specifically, the upper end portion of the second branch stay 55 gradually decreases in width in the front-rear direction as it goes downward, and the lower end portion extends with the same width in the front-rear direction. Further, an attachment piece 62 for attaching the cooling fan is formed at the central portion in the extending direction of the second branch stay 55, and an attachment piece 63 that is bent rearward is formed at the rear end portion. .

  Furthermore, weak portions 64 and 65 that become folding starting points when a load is input in the front direction of the vehicle at the time of a rear collision or the like are formed in the extending direction middle portions of the branch stays 54 and 55. The fragile portion 64 formed on the first branch stay 54 is a portion bent downward behind the second cross member 42b, and the fragile portion 65 formed on the second branch stay 55 has an upper end portion. It is a boundary part with a lower end part. Note that notches and the like may be formed in the branch stays 54 and 55 to form the weakened portions 64 and 65.

  Here, the cooling fan 51 consists of centrifugal fans, such as a sirocco fan, for example, and is the structure which discharges the air suck | inhaled from the axial direction to radial direction. Specifically, the cooling fan 51 includes a motor bracket 67 that supports a fan motor (not shown), a multi-blade type blade (not shown) that is rotatably supported on the rotation shaft of the fan motor, and a blade that is disposed on the outer periphery. The bottomed cylindrical fan casing 66 is provided. The motor bracket 67 is formed of a rigid body and is attached to an end surface of the fan casing 66 on one end side in the axial direction (outside in the vehicle width direction). An air inlet (not shown) that opens in the axial direction is formed on the other axial end of the fan casing 66 (inner side in the vehicle width direction). An exhaust port 68 extending in the tangential direction is formed. The intake port and the exhaust port 68 are arranged so that their flow directions are orthogonal to each other.

  A plurality of mounting pieces 69 are formed on the outer peripheral surface of the fan casing 66 along the circumferential direction so as to protrude outward in the radial direction. The mounting pieces 69 of the fan casing 66 and the mounting pieces 61 to 63 of the fan stay 52 are fastened by bolts 71, so that the cooling fan 51 is fixed to the fan stay 52.

Specifically, the cooling fan 51 is fixed such that the intake port opens inward in the vehicle width direction and the exhaust port 68 opens upward in a state where the axial direction coincides with the vehicle width direction. Yes. In this case, the exhaust port 68 of the cooling fan 51 extends upward along the rear panel 29 on the rear end side of the IPU storage unit 26.
The cooling fan 51 is supported by the fan stay 52 at a position offset outward in the width direction with respect to the IPU 19 in the crushable zone S <b> 2 of the IPU storage unit 26. At this time, the exhaust port 68 of the cooling fan 51 is opposed to the inner space of the middle portion of the rear lining 33 described above.

  As shown in FIGS. 3 and 4, the cooling fan 51 is provided with a cooling air exhaust passage 72 made of resin or the like that connects the intake port and the IPU 19 (casing 41) at the intake port of the cooling fan 51. The cooling air discharge passage 72 is formed so as to cover the entire rear surface of the casing 41, and is formed so as to guide the air discharged from the casing 41 to the intake port of the cooling fan 51. The cooling air discharge passage 72 is formed in a funnel shape in which the flow path diameter increases toward the outer side in the width direction.

  On the other hand, as shown in FIGS. 2 to 4, an exhaust duct (cooling device, duct portion) 73 is connected to the exhaust port 68 of the cooling fan 51. The exhaust duct 73 is a hollow member having a rectangular cross section formed by bending with a synthetic resin. An opening on one end side is connected to an exhaust port 68 that opens inside the rear lining 33, and the rear lining 33 and the rear panel 29 are connected to each other. The inner space extends outward in the width direction. And the opening part of the other end side of the exhaust duct 73 is pulled out between the rear inner panel 28 and the outer panel (not shown). The outer panel is provided with a discharge port (not shown) for discharging the air discharged from the cooling fan 51 to the outside of the vehicle.

(Function)
Next, the operation of the cooling structure of this embodiment will be described.
First, a method for cooling the IPU 19 will be described.
When the motor of the vehicle 10 is driven, the IPU 19 generates heat. Therefore, the IPU 19 needs to be cooled. When the cooling fan 51 is driven, the air in the vehicle compartment flows into the intake duct through the intake side opening due to the suction force of the cooling fan 51. The air flowing into the intake duct flows through the intake duct and flows into the cooling air intake passage 44 from the opening on one end side of the cooling air intake passage 44. Then, the air that flows into the cooling air intake passage 44 flows into the casing 41 of the IPU 19 from the opening at the other end of the cooling air intake passage 44. The air flowing into the casing 41 exchanges heat with each electric device of the IPU 19 while flowing through the entire area of the casing 41 to cool the IPU 19.

  The air flowing through the casing 41 is discharged into a cooling air discharge passage 72 provided on the rear surface of the casing 41, flows through the cooling air discharge passage 72 outward in the vehicle width direction, and is guided to the cooling fan 51. Then, the air flows into the cooling fan 51 from the intake port of the cooling fan 51 and is discharged from the exhaust port 68. Thereafter, the air discharged from the exhaust port 68 flows into the exhaust duct 73 and is discharged from the exhaust port of the exhaust duct 73 to the space between the rear inner panel 28 and the outer panel (not shown), and then outside the vehicle. Discharged. At this time, since the flow directions at the intake port and the exhaust port 68 of the cooling fan 51 are orthogonal to each other, it is possible to effectively supply air into the IPU 19 while suppressing an increase in pressure loss. As a result, the cooling efficiency of the IPU 19 can be improved.

Next, the rear collision of the vehicle 10 will be described. FIG. 5 is a cross-sectional view of the rear part of the vehicle viewed from the side during a rear collision.
When a vehicle following the vehicle 10 crashes, the impact load acts on the rear panel 29 and the rear end beam 31 via the rear bumper. Since the rear panel 29 and the rear end beam 31 are deformed forward by the impact load applied to the rear panel 29 and the rear end beam 31, the crushable zone S2 is deformed and the impact load is absorbed. It can be protected.

When the rear panel 29 is deformed, an impact load is transmitted forward to the cooling fan 51 disposed in the crushable zone S2 and the fan stay 52 supporting the cooling fan 51 via the deformed rear panel 29. The
Then, as shown in FIG. 5, among the fan stays 52, the second branch stay 55 bends forward from the weakened portion 65 of the second branch stay 55, so that the cooling fan 51 moves forward. In addition, following this, the first branch stay 64 bends downward from the weakened portion 64 as a starting point. As a result, the cooling fan 51 enters the protection zone S1 from the crushable zone S2.

  At this time, in this embodiment, since the cooling fan 51 is arranged at a position offset in the width direction with respect to the IPU 19, the cooling fan 51 tries to move into the protection zone S1 due to an impact load at the time of rear collision. In this case, the IPU 19 is not interfered. That is, since the cooling fan 51 moves forward through the outer side of the IPU 19 in the width direction, the cooling fan 51 is arranged so as to overlap the IPU 19 in the vehicle width direction after the cooling fan 51 moves. The cooling air discharge passage 72 is also disposed in the crushable zone S2, but the cooling air discharge passage 72 is made of a relatively flexible material such as resin, so that it quickly deforms when an impact load is input. Therefore, the IPU 19 is not affected.

As a result, even if the cooling fan 51 moves forward due to the impact load at the time of rear collision, the IPU 19 is not contacted, so that the IPU 19 can be prevented from being short-circuited or damaged.
In this case, by forming the weak portions 64 and 65 in the fan stay 52 of the cooling fan 51, the branch stays 54 and 55 are bent starting from the weak portions 64 and 65 when an impact load is input. Accordingly, since the forward movement of the cooling fan 51 is positively allowed, the cooling fan 51 smoothly moves forward without shifting in the width direction, and thus the contact with the IPU 19 can be reliably prevented.

Thus, in the present embodiment, the exhaust port 68 of the cooling fan 51 is arranged along the rear panel 29.
According to this configuration, by arranging the exhaust port 68 of the cooling fan 51 along the rear panel 29, the exhaust port 68 of the cooling fan 51 and the exhaust duct 73 connected to the exhaust port 68 are temporarily connected from the IPU storage unit 26. Even when projecting upward, this projecting portion is disposed on the rear end side in the luggage space 18. Thereby, compared with the case where a cooling fan protrudes in the center part in the luggage space 18 like the past, a protrusion part in the luggage space 18 does not become obstructive. That is, the dead space in the luggage space 18 can be reduced, and the capacity of the luggage space 18 can be secured. In particular, in this embodiment, since the exhaust duct 73 connected to the exhaust port 68 of the cooling fan 51 is disposed inside the existing rear lining 33 and the rear panel 29, the IPU 19 and the cooling fan 51 are added. Even if it exists, the volume of the luggage space 18 is not reduced compared with the past.

  In addition, since the vehicle 10 of the present embodiment is configured so that the rear seat 16 can be dive down, the back of the seat back 15 of the rear seat 16 and the floor board 27 of the luggage space 18 can be flattened in the dive down state D2. Space in the passenger compartment can be used effectively. In particular, in the present embodiment, since the center tank layout in which the fuel tank 17 is disposed below the front seat 13 is employed, the rear floor 22 can be lowered and the space below the rear seat 16 can be effectively utilized. Therefore, the back surface of the seat back 15 of the ya seat 16 and the floor board 27 of the luggage space 18 can be surely flattened.

By the way, since the vehicle 10 of this embodiment employ | adopts a center tank layout as mentioned above, the floor reduction of the vehicle 10 and the expansion of a luggage space are realizable.
However, since the height of the IPU storage unit 26 is limited by reducing the floor, the exhaust duct 73 can easily protrude from the IPU storage unit 26. On the other hand, by adopting the configuration as in the present embodiment, even when the center tank layout is adopted, it is possible to realize a low floor and secure a luggage space capacity.

As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
For example, in the above-described embodiment, the case where the present invention is applied to a hybrid vehicle equipped with an engine and a motor has been described. However, the present invention is not limited to this, and the present invention may be applied to an electric vehicle.

In the above-described embodiment, the configuration in which the cooling fan 51 is provided on the exhaust side with respect to the IPU 19 is described. However, the configuration is not limited thereto, and the cooling fan 51 may be provided on the intake side with respect to the IPU 19.
Furthermore, in the above-described embodiment, the configuration in which the exhaust port 68 of the cooling fan 51 is disposed along the rear panel 29 has been described. However, the present invention is not limited thereto, and the exhaust port 68 and the intake port, or a duct portion connected to them. Of these, at least one of them may be arranged along the rear panel 29.
In the above-described embodiment, the case where the IPU 19 having each electric device such as a battery module, an inverter unit, and a DC-DC converter unit is stored in the IPU storage unit 26 is described. Of these, the IPU 19 having at least one may be stored in the IPU storage unit 26.

DESCRIPTION OF SYMBOLS 10 ... Hybrid vehicle 14 ... Seat cushion 15 ... Seat back 16 ... Rear seat 17 ... Fuel tank 18 ... Luggage space 19 ... IPU (electric equipment) 28 ... Rear inner panel (outer wall part) 29 ... Rear wall part (rear panel) 51 ... Cooling Fan 52 ... Fan stay 64, 65 ... Fragile part 68 ... Exhaust part (exhaust port) 73 ... Exhaust duct (duct part)

Claims (6)

An electric device mounted on a vehicle and supplying electric power to the electric motor for traveling of the vehicle;
A cooling device for cooling the electrical equipment,
In the vehicle cooling structure in which the electrical device and the cooling device are arranged below a luggage space at the rear of the vehicle,
The cooling device includes a cooling fan disposed behind the electric device,
A cooling structure for a vehicle, wherein at least one of an intake portion and an exhaust portion of the cooling fan or a duct portion connected to the cooling fan is disposed along a rear wall portion of the vehicle. .   The vehicle cooling structure according to claim 1, wherein the cooling fan is arranged so as to be shifted in a left-right direction when viewed from a traveling direction of the vehicle with respect to the electric device. The cooling fan is supported by a fan stay located on the front side,
The vehicle cooling structure according to claim 2, wherein the fan stay is formed with a fragile portion that becomes a starting point when a load is input to the cooling fan from behind.   4. The vehicle cooling according to claim 1, wherein the rear seat of the vehicle is configured such that a seat cushion can be moved downward by folding a seat back forward. 5. Construction.   The vehicle cooling structure according to claim 4, wherein a fuel tank storing fuel to be supplied to an internal combustion engine mounted on the vehicle is disposed below the front seat of the vehicle.   A cooling air passage having an air inlet opening in a vehicle compartment and extending between the air inlet and the electric device is disposed along the inside of an outer wall portion of the vehicle. The vehicle cooling structure according to any one of claims 1 to 5.

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