Plug-in hybrid vehicle

Abstract

To provide a minivan-type plug-in hybrid vehicle in which a high-voltage component is disposed so that a large battery can be mounted while achieving a low, flat floor to ensure a spacious cabin space.SOLUTION: In a minivan-type plug-in hybrid vehicle 1, a first-row seat 30 and a second-row seat 31 located at a vehicle rear side relative to the first-row seat 30 are disposed on a floor panel 100 forming a floor surface of a cabin 16. In the plug-in hybrid vehicle 1, a high-voltage component HVC is disposed under the first-row seat 30 and above the floor panel 100. In the plug-in hybrid vehicle 1, a battery 50, a fuel tank 52, and an exhaust pipe are disposed under the floor panel 100.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This invention relates to a plug-in hybrid vehicle that can charge a battery by connecting to an external power source.

Background Art

[0002] Patent Document 1 discloses a structure in which a battery, high-voltage components, and exhaust components are compactly arranged under a floor panel in a hybrid vehicle in which an engine and a drive motor are arranged as drive sources.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As the second-row seat, a minivan-type vehicle equipped with a slide seat that can slide on the floor in the front-rear direction and a slide door is known. In order to secure the slide amount of the slide seat, it is necessary to arrange a long slide rail on the floor. Therefore, in a minivan-type vehicle, it is desirable that the floor behind the first-row seat has a low and flat structure.

[0005] A plug-in hybrid vehicle that can charge a battery by connecting to an external power source needs to be equipped with a larger battery than a hybrid vehicle. Therefore, in a minivan-type plug-in hybrid vehicle, it is necessary to consider the arrangement of high-voltage components that can accommodate a large battery while realizing a low and flat floor and securing a wide cabin space.

Means for Solving the Problems

[0006] Means for solving the above problems and their operational effects will be described below. The plug-in hybrid vehicle for solving the above problems is equipped with an engine and a motor as power sources, a fuel tank for storing fuel supplied to the engine, a battery for storing electric power supplied to the motor, high-voltage system components to which high voltage is input, an in-vehicle charger for charging the battery with external electric power, a power transmission mechanism for transmitting the rotational power of the engine and the motor to the front wheels, an inverter for driving the motor, and an exhaust pipe for guiding the exhaust from the engine to the rear of the vehicle. The plug-in hybrid vehicle is a minivan-type plug-in hybrid vehicle in which the passenger compartment and the luggage compartment are not partitioned. The plug-in hybrid vehicle includes an engine compartment in front of the vehicle relative to the passenger compartment. The engine, the motor, the power transmission mechanism, and the inverter are disposed in the engine compartment. On the floor panel constituting the floor surface of the passenger compartment, a first row of seats and a second row of seats located behind the first row of seats in the vehicle are disposed. In a side view of the vehicle, the first row of seats is located behind the front wheels in the vehicle, and the second row of seats is located in front of the rear wheels in the vehicle. The second row of seats is slidable in the vehicle longitudinal direction along a slide rail extending in the vehicle longitudinal direction provided on the floor panel. The plug-in hybrid vehicle has the battery, the fuel tank, and the exhaust pipe disposed under the floor panel. The plug-in hybrid vehicle has the high-voltage system components disposed under the first row of seats and above the floor panel.

Advantages of the Invention

[0007] The plug-in hybrid vehicle can achieve a low and flat floor while mounting a large battery, thereby ensuring a wide passenger compartment space.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a plug-in hybrid vehicle will be described with reference to FIGS. 1 to 7. <Regarding the external structure of the plug-in hybrid vehicle 1> FIG. 1 is a schematic diagram showing the plug-in hybrid vehicle 1 according to the present embodiment. As shown in FIG. 1, the plug-in hybrid vehicle 1 includes a front door 2, a vehicle opening 3, and a sliding door 4 on the vehicle side surface. A charging lid 61 is disposed on the vehicle side surface of the plug-in hybrid vehicle 1 and in front of the vehicle with respect to the front door 2. Inside the charging lid 61, a first charging port 18 and a second charging port 19, which will be described later, are disposed.

[0010] The vehicle opening 3 is opened and closed by a sliding door 4 that moves in the vehicle longitudinal direction. Also, a step panel 5 is disposed below the vehicle opening 3. The step panel 5 is disposed below a floor panel 100 that constitutes the floor surface of the plug-in hybrid vehicle 1. A guide rail 11 extending in the vehicle longitudinal direction of the plug-in hybrid vehicle 1 is fixed to the lower surface of the step panel 5. The front end of the guide rail 11 is located behind the vehicle with respect to the front wheel 14. The rear end of the guide rail 11 is located in front of the vehicle with respect to the rear wheel 15.

[0011] As shown in FIG. 2, a fuel filler port 17 is disposed on the vehicle side surface of the plug-in hybrid vehicle 1 and behind the vehicle with respect to the sliding door 4. In the plug-in hybrid vehicle 1, an upper rail 7, a center rail 9, and the aforementioned guide rail 11 are disposed around the vehicle opening 3. The upper rail 7 is disposed above the vehicle opening 3. The guide rail 11 is disposed below the vehicle opening 3. The center rail 9 is disposed on the vehicle side surface behind the vehicle with respect to the vehicle opening 3. The position of the center rail 9 in the vehicle height direction is below the upper rail 7 and above the guide rail 11.

[0012] The sliding door 4 is composed of a sliding door body 6, an upper hinge unit 8, a center hinge unit 10, and a guide hinge unit 12. The upper hinge unit 8 and the guide hinge unit 12 are fixed near the front end in the vehicle length direction of the sliding door body 6. The center hinge unit 10 is fixed near the rear end in the vehicle length direction of the sliding door body 6.

[0013] The upper hinge unit 8 is fixed to the upper end portion of the sliding door body 6. The guide hinge unit 12 is fixed to the lower end portion of the sliding door body 6. The center hinge unit 10 is fixed to the central portion in the vertical direction of the sliding door body 6.

[0014] The upper hinge unit 8 is supported in a movable state on the upper rail 7. The center hinge unit 10 is supported in a movable state on the center rail 9. The guide hinge unit 12 is supported in a movable state on the guide rail 11. Thereby, the upper hinge unit 8, the center hinge unit 10, and the guide hinge unit 12 connect the sliding door main body 6 and the vehicle side surface. And when the upper hinge unit 8, the center hinge unit 10, and the guide hinge unit 12 move along the upper rail 7, the center rail 9, and the guide rail 11, the sliding door main body 6 can move relative to the vehicle side surface. That is, the upper rail 7, the center rail 9, and the guide rail 11 define the moving direction of the sliding door 4.

[0015] <Regarding the internal structure of the plug-in hybrid vehicle 1> FIG. 3 schematically shows the internal structure in a side view of the vehicle of the plug-in hybrid vehicle 1 as seen from the left side. As shown in FIG. 3, the plug-in hybrid vehicle 1 is a minivan-type vehicle in which the passenger compartment 16 and the luggage compartment are not partitioned. The plug-in hybrid vehicle 1 is provided with an engine compartment 20 in front of the vehicle relative to the passenger compartment 16. In the engine compartment 20, an engine 21 as a power source, a first motor generator MG1, a second motor generator MG2, a power control unit 22, a power split mechanism 23, and a speed reduction mechanism 24 are arranged.

[0016] The floor surface of the plug-in hybrid vehicle 1 is constituted by a floor panel 100. On the floor panel 100, a first-row seat 30, a second-row seat 31, and a third-row seat 32 are arranged. The second-row seat 31 is located behind the vehicle relative to the first-row seat 30. In a side view of the vehicle, the first-row seat 30 is located behind the vehicle relative to the front wheels 14. In a side view of the vehicle, the second-row seat 31 is located in front of the vehicle relative to the rear wheels 15.

[0017] FIG. 4 schematically shows the arrangement of seats in a top view of the vehicle looking down on the plug-in hybrid vehicle 1 from above. As shown in FIG. 4, the seats 30 in the first row are composed of a driver's seat and a passenger seat. The seats 31 in the second row each have two independent seats. The seats 32 in the third row are located further rearward in the vehicle than the seats 31 in the second row.

[0018] As shown in FIG. 3, in the plug-in hybrid vehicle 1, a high-voltage system component HVC is disposed below the seats 30 in the first row and above the floor panel 100. Details of the high-voltage system component HVC will be described later.

[0019] The plug-in hybrid vehicle 1 includes a first cross member 43 and a second cross member 44 below the seats 30 in the first row and above the floor panel 100. The first cross member 43 and the second cross member 44 are frame members extending in the vehicle width direction. The first cross member 43 is disposed further forward in the vehicle than the high-voltage system component HVC. The second cross member 44 is disposed further rearward in the vehicle than the high-voltage system component HVC. That is, the first cross member 43 and the second cross member 44 are disposed so as to sandwich the high-voltage system component HVC therebetween.

[0020] Below the floor panel 100 of the plug-in hybrid vehicle 1, a battery 50, a fuel tank 52, a muffler 53, a rear-wheel drive motor generator MGR, and a rear-wheel speed reduction mechanism 56 are disposed. The battery 50 stores electric power to be supplied to the first motor generator MG1, the second motor generator MG2, and the rear-wheel drive motor generator MGR. The fuel tank 52 stores fuel to be supplied to the engine 21. The muffler 53 reduces exhaust noise.

[0021] The fuel tank 52 is disposed further rearward in the vehicle than the battery 50. The rear-wheel drive motor generator MGR is disposed further rearward in the vehicle than the fuel tank 52. The muffler 53 is disposed further rearward in the vehicle than the rear-wheel drive motor generator MGR.

[0022] In a side view of the vehicle, the high-voltage component HVC is disposed above the battery 50. <Regarding the devices disposed on the floor panel 100> FIG. 5 is a schematic view in a top view of the vehicle looking down from above the plug-in hybrid vehicle 1 as in FIG. 4. FIG. 5 schematically shows the arrangement of the devices disposed on the floor panel 100. As shown in FIG. 5, on the floor panel 100, an in-vehicle charger 40, a branch box 41, and a DC / DC converter 42 are disposed. The in-vehicle charger 40, the branch box 41, and the DC / DC converter 42 are the high-voltage components HVC described above.

[0023] The in-vehicle charger 40 is provided with an air intake 63 for cooling. The DC / DC converter 42 is also provided with an air intake 63 for cooling. The air intake 63 opens toward the outside in the vehicle width direction. Behind the vehicle with respect to the high-voltage component HVC, a first slide rail 45 extending in the vehicle longitudinal direction is disposed. Behind the first slide rail 45 with respect to the vehicle, a second slide rail 46 extending in the vehicle longitudinal direction is disposed. All four rails of the first slide rail 45 are disposed on the floor panel 100. Among the second slide rails 46, two in the center of the vehicle are disposed on the floor panel 100. The remaining two are disposed on the vehicle side surface in the passenger compartment 16.

[0024] As shown in FIG. 4, the second-row seat 31 is disposed on the first slide rail 45. The second-row seat 31 is slidable in the vehicle longitudinal direction along the first slide rail 45. The third-row seat 32 is disposed on the second slide rail 46. The third-row seat 32 is slidable in the vehicle longitudinal direction along the second slide rail 46.

[0025] <Regarding the devices disposed under the floor panel 100> FIG. 6 is a schematic view in a top view of the vehicle looking down on the plug-in hybrid vehicle 1 from above, similar to FIG. 4. FIG. 6 schematically shows the arrangement of the devices disposed under the floor panel 100. In FIG. 6, the plug-in hybrid vehicle 1 is divided into a region RA on the right side of the vehicle and a region LA on the left side of the vehicle with a center line CL indicating the center in the vehicle width direction of the plug-in hybrid vehicle 1 as a boundary.

[0026] The battery 50 is disposed so as to span both the region RA on the right side of the vehicle and the region LA on the left side of the vehicle. The battery 50 is disposed closer to the left side of the vehicle. As a result, the center of gravity position 51 of the battery 50 is located in the region LA on the left side of the vehicle. That is, the battery 50 is disposed shifted to one side in the vehicle width direction so that the center of gravity position 51 of the battery 50 is offset from the center line CL.

[0027] The plug-in hybrid vehicle 1 includes a guide rail 11 for sliding the sliding door 4 under the floor panel 100. The guide rail 11 is disposed so as to overlap a part of the battery 50 in the vehicle front-rear direction. The guide rail 11 includes a curved portion 13 that curves so as to be located closer to the inner side in the vehicle width direction toward the front of the vehicle. When closing the sliding door 4, the sliding door 4 is drawn inward in the vehicle width direction along the curved portion 13 of the guide rail 11.

[0028] The plug-in hybrid vehicle 1 has an exhaust pipe 54 disposed under the floor panel 100 for guiding the exhaust from the engine 21 to the rear of the vehicle. The exhaust pipe 54 connects the engine 21 and the muffler 53. The exhaust pipe 54 is disposed closer to the right side of the vehicle and is disposed in the region RA on the right side of the vehicle. That is, the exhaust pipe 54 is disposed shifted to the side opposite to the side where the battery 50 is shifted in the vehicle width direction. Further, the exhaust pipe 54 is disposed passing between the battery 50 and the guide rail 11. In addition, the exhaust pipe 54 is bent outward in the vehicle width direction along the curved portion 13 of the guide rail 11.

[0029] The fuel tank 52 is disposed behind the vehicle of the battery 50. The fuel tank 52 is connected to the fuel filler port 17 via the fuel supply pipe 62. A fuel vapor recovery device 55 is disposed behind the vehicle of the rear-wheel drive motor generator MGR and on the side in the vehicle width direction of the muffler 53. The fuel vapor recovery device 55 is a canister that adsorbs the fuel vapor gas generated inside the fuel tank 52.

[0030] <Regarding the drive system of the plug-in hybrid vehicle 1> FIG. 7 schematically shows the configuration of the drive system and the electrical system configuration in the plug-in hybrid vehicle 1 of the embodiment.

[0031] As shown in FIG. 7, the second motor generator MG2 is connected to the battery 50 via the power control unit 22. The second motor generator MG2 is connected to the front wheels 14 via the speed reduction mechanism 24. The rotational power of the second motor generator MG2 is transmitted to the front wheels 14 via the speed reduction mechanism 24 which is a power transmission mechanism. That is, the second motor generator MG2 functions as a drive motor.

[0032] Also, the engine 21 is connected to the front wheels 14 via the power split mechanism 23 and the speed reduction mechanism 24. The power split mechanism 23 is a power transmission mechanism similar to the speed reduction mechanism 24. That is, the rotational power of the engine 21 is transmitted to the front wheels 14 via the power transmission mechanism. Note that the first motor generator MG1 is also connected to the power split mechanism 23. The first motor generator MG1 is, for example, a three-phase alternating current type motor generator. The power split mechanism 23 is a planetary gear mechanism and can split the driving force among the engine 21, the first motor generator MG1, and the front wheels 14.

[0033] The first motor generator MG1 generates electricity by receiving the driving force of the engine 21 or the driving force from the front wheels 14. Also, when starting the engine 21, the first motor generator MG1 also serves as a starter that drives the crankshaft, which is the output shaft of the engine 21. At that time, the first motor generator MG1 functions as an electric motor that generates a driving force in response to the supply of electric power from the battery 50. That is, the first motor generator MG1 functions as a driving motor.

[0034] The first motor generator MG1 and the second motor generator MG2 are connected to the battery 50 via the power control unit 22. The AC power generated by the first motor generator MG1 is converted into DC power by the power control unit 22 and used to charge the battery 50. That is, the power control unit 22 functions as an inverter.

[0035] Also, the DC power of the battery 50 is converted into AC power by the power control unit 22 and supplied to the second motor generator MG2. When decelerating the plug-in hybrid vehicle 1, electricity is generated by the second motor generator MG2 using the driving force from the front wheels 14. Then, the generated electricity is used to charge the battery 50. That is, the plug-in hybrid vehicle 1 performs regenerative charging. At this time, the second motor generator MG2 functions as a generator. The AC power generated by the second motor generator MG2 is converted into DC power by the power control unit 22 and used to charge the battery 50.

[0036] The rear-wheel drive motor generator MGR is also connected to the battery 50 via the power control unit 22. The rear-wheel drive motor generator MGR is connected to the rear wheels 15 via a reduction mechanism 56 for the rear wheels. The DC power of the battery 50 is converted into AC power by the power control unit 22 and supplied to the rear-wheel drive motor generator MGR. The rear-wheel drive motor generator MGR is an electric motor that drives the rear wheels 15 using the power supplied from the battery 50. That is, the rear-wheel drive motor generator MGR functions as a drive motor.

[0037] When decelerating the plug-in hybrid vehicle 1, power generation is performed by the rear-wheel drive motor generator MGR using the driving force from the rear wheels 15. Then, the generated power is charged into the battery 50. At this time, the rear-wheel drive motor generator MGR functions as a generator. The AC power generated by the rear-wheel drive motor generator MGR is converted into DC power by the power control unit 22 and charged into the battery 50.

[0038] <Regarding the electrical system of the plug-in hybrid vehicle 1> As shown in FIG. 7, the plug-in hybrid vehicle 1 includes an in-vehicle charger 40, a branch box 41, and a DC / DC converter 42 as high-voltage system components HVC. Further, the plug-in hybrid vehicle 1 includes a first charging port 18 and a second charging port 19 as charging ports into which a charging plug is inserted from outside the vehicle. The first charging port 18 is a charging port used for normal charging performed using an AC power source such as 100V or 200V. The second charging port 19 is a charging port used for rapid charging performed using a DC high-voltage power source such as 50kW. As shown in FIG. 1, the first charging port 18 and the second charging port 19 are disposed on the side surface of the vehicle in front of the vehicle relative to the front door 2.

[0039] As shown in FIG. 7, the in-vehicle charger 40 is connected to the battery 50 via a wire harness. The branch box 41 is connected to the battery 50 via a wire harness. Further, the DC / DC converter 42 is connected to the branch box 41 via a wire harness.

[0040] The in-vehicle charger 40 is connected to the first charging port 18 via a wire harness. The in-vehicle charger 40 charges the battery 50 by converting the AC power input from the AC power source connected to the first charging port 18 into DC power and outputting it. That is, the plug-in hybrid vehicle 1 can use an AC power source as an external power source for charging the battery 50.

[0041] The branch box 41 has a function of branching the power of the battery 50 to a plurality of devices. For example, the DC / DC converter 42, the air conditioner 57, and the water heater 58 are supplied with DC power from the battery 50 via the branch box 41.

[0042] The air conditioner 57 is a device that air-conditions the passenger compartment 16 with the power supplied from the battery 50. The water heater 58 is a device that heats water to warm water with the power supplied from the battery 50 in order to be a heat source for the air conditioner 57.

[0043] The branch box 41 is connected to the second charging port 19 via a wire harness. A DC power source is connected to the second charging port 19. The DC power input from the DC power source connected to the second charging port 19 is supplied to the battery 50 via the branch box 41. That is, the plug-in hybrid vehicle 1 can use a DC power source as an external power source for charging the battery 50.

[0044] The DC / DC converter 42 is a device that steps down the voltage of the battery 50 and supplies it to auxiliary components. Auxiliary components include, for example, the electric power steering 59 disposed in the engine compartment 20 and the electric oil pump 60. The electric power steering 59 is a mechanism that assists the driver's steering operation. The electric oil pump 60 is a mechanism for sucking lubricating oil and using it for lubricating the engine 21.

[0045] <Operation of this embodiment> When the high-voltage system component HVC is disposed under the floor panel 100, the battery 50 that can be disposed under the floor panel 100 becomes small, or a low floor cannot be realized. When the high-voltage system component HVC is disposed above the floor panel 100, depending on the position where the high-voltage system component HVC is disposed, a flat floor may not be realized.

[0046] According to the above configuration, it is possible to secure a space for mounting a large battery 50 under the floor panel 100 without raising the position of the floor panel 100. Furthermore, by disposing the high-voltage system component HVC under the seat 30 in the first row, the floor on which the seat 31 in the second row is disposed becomes flat.

[0047] <Effect of this embodiment> (1) The plug-in hybrid vehicle 1 can realize a low and flat floor and secure a large cabin space while mounting a large battery 50.

[0048] (2) The high-voltage system component HVC mounted on the plug-in hybrid vehicle 1 and the battery 50 are connected via a wire harness. The high-voltage system component HVC is disposed above the battery 50. There are components in the high-voltage system component HVC that exchange power with the battery 50 via a wire harness. Since the high-voltage system component HVC is disposed above the battery 50, the wire harness connecting the high-voltage system component HVC and the battery 50 can be short. The above plug-in hybrid vehicle 1 can be made lightweight by shortening the wire harness.

[0049] (3) The plug-in hybrid vehicle 1 includes, as high-voltage system components HVC, an in-vehicle charger 40, a branch box 41 that branches the current from the battery 50, and a DC / DC converter 42 that is a converter for converting the voltage of the power supplied from the battery 50. The in-vehicle charger 40, the branch box 41, and the DC / DC converter 42 are arranged side by side in the vehicle width direction, above the battery 50 and below the seat 30 in the first row. The battery 50 and the in-vehicle charger 40 are connected by a wire harness. The battery 50 and the branch box 41 are connected by a wire harness. The branch box 41 and the DC / DC converter 42 are also connected by a wire harness. According to the above configuration, since the high-voltage system components HVC are intensively arranged, the connection between the high-voltage system components HVC and the battery 50 and the connection between the high-voltage system components HVC can be efficiently performed.

[0050] (4) The plug-in hybrid vehicle 1 includes a branch box 41 as a high-voltage system component HVC. The branch box 41 is arranged above the battery 50. A high voltage is input to the wire harness connecting the battery 50 and the branch box 41. As in the above configuration, by arranging the branch box 41 above the battery 50, the wire harness connecting the battery 50 and the branch box 41 can be shortened. Thereby, the power loss in the wire harness connecting the battery 50 and the branch box 41 is reduced. The above plug-in hybrid vehicle 1 can reduce the power loss in the wire harness between the battery 50 and the branch box 41.

[0051] (5) The plug-in hybrid vehicle 1 includes a DC / DC converter 42 as a high-voltage system component HVC. The DC / DC converter 42 is disposed above the battery 50. A high voltage is input to the wire harness connecting the battery 50 and the DC / DC converter 42. By disposing the DC / DC converter 42 above the battery 50 as in the above configuration, the wire harness connecting the battery 50 and the DC / DC converter 42 can be shortened. Thereby, the power loss in the wire harness is reduced. The above plug-in hybrid vehicle 1 can reduce the power loss in the wire harness between the battery 50 and the DC / DC converter 42.

[0052] (6) The plug-in hybrid vehicle 1 includes an in-vehicle charger 40 as a high-voltage system component HVC. The in-vehicle charger 40 is disposed above the battery 50. By disposing the in-vehicle charger 40 above the battery 50 as in the above configuration, the wire harness connecting the battery 50 and the in-vehicle charger 40 can be shortened. Thereby, the power loss in the wire harness is reduced. The above plug-in hybrid vehicle 1 can reduce the power loss in the wire harness between the in-vehicle charger 40 and the battery 50.

[0053] (7) In the plug-in hybrid vehicle 1, an in-vehicle charger 40 is disposed on the side in the vehicle width direction of the branch box 41. In the plug-in hybrid vehicle 1, a DC / DC converter 42 connected to the branch box 41 by a wire harness is disposed on the side in the vehicle width direction of the branch box 41 on the opposite side of the in-vehicle charger 40. The DC / DC converter 42 is connected to the branch box 41 via a wire harness. Therefore, if the DC / DC converter 42 is installed on the side of the branch box 41, the wire harness connecting the branch box 41 and the DC / DC converter 42 becomes shorter. When the wire harness becomes shorter, the weight of the wire harness is reduced. That is, the weight of the plug-in hybrid vehicle 1 is reduced. In addition, if the wire harness becomes shorter, the power loss in the wire harness is also reduced. The above-described plug-in hybrid vehicle 1 can reduce the power loss due to the wire harness connecting the branch box 41 and the DC / DC converter 42.

[0054] (8) The plug-in hybrid vehicle 1 includes a first cross member 43 extending in the vehicle width direction and a second cross member 44. The first cross member 43 is located in front of the vehicle of the high voltage system component HVC. The second cross member 44 is located behind the vehicle of the high voltage system component HVC. The first cross member 43 and the second cross member 44 are located in front of the vehicle of the high voltage system component HVC and behind the vehicle of the high voltage system component HVC so as to sandwich the high voltage system component HVC therebetween. It is preferable that the high voltage system component HVC into which high voltage is input is protected from impact. In the above-described plug-in hybrid vehicle 1, the first cross member 43 and the second cross member 44 are installed in front of and behind the high voltage system component HVC so as to sandwich the high voltage system component HVC. Therefore, the impact from the front of the vehicle is absorbed by the first cross member 43 before reaching the high voltage system component HVC. The impact from the rear of the vehicle is absorbed by the second cross member 44 before reaching the high voltage system component HVC. The above-described plug-in hybrid vehicle 1 can protect the high voltage system component HVC from impacts from the front and rear of the vehicle.

[0055] (9) In the plug-in hybrid vehicle 1, the high-voltage system component HVC is provided with an air intake 63 for cooling. The air intake 63 provided in the high-voltage system component HVC opens toward the outside in the vehicle width direction. When the air intake 63 opens toward the front of the vehicle, an air flow is generated at the feet of the passenger sitting on the first-row seat 30. When the air intake 63 opens toward the rear of the vehicle, an air flow is generated at the feet of the passenger sitting on the second-row seat 31. The generated air flow may cause discomfort to the passenger. According to the above configuration, compared with the case where the air intake 63 opens toward the front or rear of the vehicle, the generation of an air flow at the feet of the passenger is less. The above plug-in hybrid vehicle 1 can cool the high-voltage system component HVC while suppressing discomfort given to the passenger.

[0056] (10) In the plug-in hybrid vehicle 1, the on-vehicle charger 40 and the DC / DC converter 42 are provided with an air intake 63 for cooling. Both the air intake 63 in the on-vehicle charger 40 and the air intake 63 in the DC / DC converter 42 open toward the outside in the vehicle width direction. The on-vehicle charger 40 and the DC / DC converter 42 generate more heat than the branch box 41. According to the above configuration, the on-vehicle charger 40 and the DC / DC converter 42, which generate a large amount of heat, can be efficiently cooled.

[0057] <Modified Example> This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically non-conflicting range.

[0058] · If the high-voltage system component HVC is disposed under the first-row seat 30 and above the floor panel 100, it may be disposed at a position other than above the battery 50. That is, in the plug-in hybrid vehicle 1, the battery 50 may not be disposed under the high-voltage system component HVC.

[0059] · The plug-in hybrid vehicle 1 may not be provided with the branch box 41. For example, when the battery 50 has a function of branching current, the plug-in hybrid vehicle 1 may not be provided with the branch box 41.

[0060] · In the plug-in hybrid vehicle 1, the on-vehicle charger 40 may be arranged between the branch box 41 and the DC / DC converter 42. · The high-voltage system component HVC and the battery 50 may not be connected by a wire harness. For example, the high-voltage system component HVC and the battery 50 may be connected by a bus bar.

[0061] · The branch box 41 and the DC / DC converter 42 may not be connected by a wire harness. For example, the branch box 41 and the DC / DC converter 42 may be connected by a bus bar.

[0062] · If the branch box 41, the DC / DC converter 42, and the on-vehicle charger 40 are arranged below the seat 30 in the first row and above the floor panel 100, they may not be arranged side by side in the vehicle width direction. For example, the branch box 41, the DC / DC converter 42, and the on-vehicle charger 40 may be arranged in a state of overlapping in the vehicle height direction.

[0063] · The plug-in hybrid vehicle 1 may not be provided with the first cross member 43 in front of the vehicle with respect to the high-voltage system component HVC. · The plug-in hybrid vehicle 1 may not be provided with the second cross member 44 behind the vehicle with respect to the high-voltage system component HVC.

[0064] · The plug-in hybrid vehicle 1 may not be provided with a cross member. · In the plug-in hybrid vehicle 1, the high-voltage system component HVC may not be sandwiched between two cross members.

[0065] · In the plug-in hybrid vehicle 1, the high-voltage system component HVC may not be provided with the intake port 63 for cooling. · In the plug-in hybrid vehicle 1, the on-vehicle charger 40 may not be provided with the intake port 63 for cooling.

[0066] · In the plug-in hybrid vehicle 1, the DC / DC converter 42 may not be provided with the intake port 63 for cooling. · In the plug-in hybrid vehicle 1, the intake ports 63 provided in the on-vehicle charger 40 and the DC / DC converter 42 may not face outward in the vehicle width direction. For example, the intake port 63 may open toward the front of the vehicle. For example, the intake port 63 may open toward the rear of the vehicle.

Description of Reference Signs

[0067] 1... Plug-in hybrid vehicle, 2... Front door, 3... Vehicle opening, 4... Slide door, 5... Step panel, 6... Slide door body, 7... Upper rail, 8... Upper hinge unit, 9... Center rail, 10... Center hinge unit, 11... Guide rail, 12... Guide hinge unit, 13... Curved portion, 14... Front wheel, 15... Rear wheel, 16... Passenger compartment, 17... Fuel filler port, 18... First charging port, 19... Second charging port, 20... Engine compartment, 21... Engine, 22... Power control unit, 23... Power split mechanism, 24... Reduction mechanism, 30... First row seat, 31... Second row seat, 32... Third row seat, 40... Onboard charger, 41... Branch box, 42... DC / DC converter, 43... First cross member, 44... Second cross member, 45... First slide rail, 46... Second slide rail, 50... Battery, 51... Center of gravity position, 52... Fuel tank, 53... Muffler, 54... Exhaust pipe, 55... Fuel vapor recovery device, 56... Rear wheel reduction mechanism, 57... Air conditioner, 58... Water heater, 59... Electric power steering, 60... Electric oil pump, 61... Charging lid, 62... Fuel supply pipe, 63... Air intake, 100... Floor panel, HVC... High voltage system components, MG1... First motor generator, MG2... Second motor generator, MGR... Rear wheel drive motor generator, CL... Center line, RA... Region on the right side of the vehicle, LA... Region on the left side of the vehicle

Claims

1. A plug-in hybrid vehicle of minivan type, which is equipped with an engine and a motor as power sources, a fuel tank for storing fuel supplied to the engine, a battery for storing electric power supplied to the motor, high-voltage system components to which a high voltage is input, an in-vehicle charger for charging the battery with external electric power, a power transmission mechanism for transmitting the rotational power of the engine and the motor to the front wheels, an inverter for driving the motor, and an exhaust pipe for guiding the exhaust from the engine to the rear of the vehicle, and in which the passenger compartment and the luggage compartment are not partitioned, is provided with an engine compartment in front of the vehicle relative to the passenger compartment, in which the engine, the motor, the power transmission mechanism, and the inverter are arranged, on a floor panel constituting the floor surface of the passenger compartment, a first row of seats and a second row of seats located behind the vehicle relative to the first row of seats are arranged, in a side view of the vehicle, the first row of seats is located behind the front wheels relative to the vehicle, the second row of seats is located in front of the rear wheels relative to the vehicle, and the second row of seats is slidable in the vehicle front-rear direction along a slide rail extending in the vehicle front-rear direction provided on the floor panel, under the floor panel, the battery, the fuel tank, and the exhaust pipe are arranged, the high-voltage system components are arranged under the first row of seats and above the floor panel Plug-in hybrid vehicle.

2. The high-voltage system components and the battery are connected via a wire harness, the high-voltage system components are arranged on the battery The plug-in hybrid vehicle according to claim 1.

3. As the high-voltage system components, a branch box for branching the current from the battery, a converter for converting the voltage of the electric power supplied from the battery, and the in-vehicle charger are provided, the branch box, the converter, and the in-vehicle charger are arranged side by side in the vehicle width direction, on the battery, and under the first row of seats The plug-in hybrid vehicle according to claim 2.

4. As the high-voltage system components, a branch box for branching the current from the battery is provided The plug-in hybrid vehicle according to claim 2.

5. As the high-voltage system component, a converter for converting the voltage of the power supplied from the battery is provided on the battery. The plug-in hybrid vehicle according to claim 2.

6. As the high-voltage system component, the on-vehicle charger is provided on the battery. The plug-in hybrid vehicle according to claim 2.

7. The on-vehicle charger is disposed on a lateral side in the vehicle width direction of the branch box, and the converter connected to the branch box by a wire harness is disposed on a lateral side in the vehicle width direction of the branch box on the side opposite to the on-vehicle charger. The plug-in hybrid vehicle according to claim 3.

8. Comprising a plurality of cross members extending in the vehicle width direction, among the plurality of cross members, two cross members are located in front of the vehicle of the high-voltage system component and behind the vehicle of the high-voltage system component so as to sandwich the high-voltage system component therebetween. The plug-in hybrid vehicle according to any one of claims 1 to 7.

9. The high-voltage system component includes an air intake for cooling, and the air intake is open toward the outside in the vehicle width direction. The plug-in hybrid vehicle according to claim 1.

10. The on-vehicle charger and the converter each include an air intake for cooling, and both the air intake in the on-vehicle charger and the air intake in the converter are open toward the outside in the vehicle width direction. The plug-in hybrid vehicle according to claim 7.

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