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 battery 50, a fuel tank 52, and an exhaust pipe 54 are disposed under a floor panel 100. The plug-in hybrid vehicle 1 includes an on-vehicle charger 40, a branch box 41, and a DC / DC converter 42. The on-vehicle charger 40 and the DC / DC converter 42 are disposed at a vehicle rear side relative to an axle of rear wheels 15 and on the floor panel 100. The branch box 41 is disposed under a first-row seat and on the floor panel 100.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present 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 system components, and exhaust system 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 ensure 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 system components that can accommodate a large battery while realizing a low and flat floor and ensuring a wide cabin space.

Means for Solving the Problems

[0006] Means for solving the above problems and their effects will be described below. The plug-in hybrid vehicle for solving the above problems includes 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, an in-vehicle charger for charging the battery with external electric power, a converter for converting the voltage of the electric power supplied from the battery, 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 cargo compartment are not partitioned. The plug-in hybrid vehicle includes an engine compartment in front of the vehicle relative to the passenger compartment. In the engine compartment, the engine, the motor, the power transmission mechanism, and the inverter are arranged. On the floor panel constituting the floor surface of the passenger compartment, a first row seat and a second row seat located behind the vehicle relative to the first row seat are arranged. In a side view of the vehicle, the first row seat is located behind the vehicle relative to the front wheels, and the second row seat is located in front of the vehicle relative to the rear wheels. The second row seat is slidable in the vehicle front-rear direction along a slide rail extending in the vehicle front-rear direction provided on the floor panel. The plug-in hybrid vehicle has the battery, the fuel tank, and the exhaust pipe arranged under the floor panel. The plug-in hybrid vehicle has the in-vehicle charger arranged behind the vehicle axle of the rear wheels and above the floor panel.

Effect of the Invention

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

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a plug-in hybrid vehicle will be described with reference to FIGS. 1 to 8. <Regarding the external structure of the plug-in hybrid vehicle 1> FIG. 1 is a schematic view 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 side surface of the vehicle.

[0010] The vehicle opening 3 is opened and closed by a slide door 4 that moves in the vehicle longitudinal direction. Also, a step panel 5 is disposed at the lower part of 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 wheels 14. The rear end of the guide rail 11 is located in front of the vehicle with respect to the rear wheels 15.

[0011] FIG. 2 is a plan view in a side view of the vehicle looking at the slide door 4 provided in the plug-in hybrid vehicle 1 from the left side. As shown in FIG. 2, a fuel filler port 17 is disposed on the left side surface of the vehicle and behind the vehicle with respect to the slide door 4 of the plug-in hybrid vehicle 1. The plug-in hybrid vehicle 1 has an upper rail 7, a center rail 9, and the aforementioned guide rail 11 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 side surface of the vehicle behind 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 slide door 4 is composed of a slide 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 slide door body 6. The center hinge unit 10 is fixed near the rear end in the vehicle length direction of the slide door body 6.

[0013] The upper hinge unit 8 is fixed to the upper end of the slide door body 6. The guide hinge unit 12 is fixed to the lower end of the slide door body 6. The center hinge unit 10 is fixed to the central part in the vertical direction of the slide 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 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 body 6 becomes movable 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] FIG. 3 is a plan view in a side view of the vehicle seen from the right side of the sliding door 4 provided in the plug-in hybrid vehicle 1. As shown in FIG. 3, a charging lid 61 is disposed on the right side surface of the vehicle of the plug-in hybrid vehicle 1 and behind the vehicle with respect to the sliding door 4. Inside the charging lid 61, a first charging port 18 and a second charging port 19, which will be described later, are disposed.

[0016] <Regarding the internal structure of the plug-in hybrid vehicle 1> FIG. 4 schematically shows the internal structure in a side view of the plug-in hybrid vehicle 1 seen from the left side. As shown in FIG. 4, 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 includes an engine compartment 20 in front of the vehicle with respect to the passenger compartment 16. Inside 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 disposed.

[0017] 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.

[0018] As shown in FIG. 4, in the plug-in hybrid vehicle 1, a branch box 41 is arranged below the first-row seat 30 and above the floor panel 100. The branch box 41 is a high-voltage system component. Details of the branch box 41 will be described later.

[0019] In the plug-in hybrid vehicle 1, an in-vehicle charger 40 and a DC / DC converter 42 are arranged behind the vehicle relative to the axle of the rear wheels 15 and above the floor panel 100. Details of the in-vehicle charger 40 and the DC / DC converter 42 will be described later. The in-vehicle charger 40 and the DC / DC converter 42 are high-voltage system components.

[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 reduction mechanism 56 are arranged. 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 arranged behind the vehicle relative to the battery 50. The rear-wheel drive motor generator MGR is arranged behind the vehicle relative to the fuel tank 52. The muffler 53 is arranged behind the vehicle relative to the rear-wheel drive motor generator MGR.

[0022] FIG. 5 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. 5, 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 of the vehicle than the seats 31 in the second row.

[0023] <Regarding the equipment arranged on the floor panel 100> FIG. 6 is a schematic diagram in a top view of the vehicle looking down on the plug-in hybrid vehicle 1 from above, similar to FIG. 5. FIG. 6 schematically shows the arrangement of the equipment arranged on the floor panel 100. As shown in FIG. 6, on the floor panel 100, an in-vehicle charger 40, a branch box 41, and a DC / DC converter 42 are arranged.

[0024] A first slide rail 45 extending in the longitudinal direction of the vehicle is arranged further rearward of the vehicle than the branch box 41. A second slide rail 46 extending in the longitudinal direction of the vehicle is arranged further rearward of the vehicle than the first slide rail 45. All four rails of the first slide rail 45 are arranged on the floor panel 100. Of the second slide rail 46, two in the center of the vehicle are arranged on the floor panel 100. The remaining two are arranged on the side surface of the vehicle in the passenger compartment 16.

[0025] As shown in FIG. 5, the branch box 41 is arranged under the driver's seat. Thereby, the height of the floor panel 100 is the same as the height of the portion where the first slide rail 45 and the second slide rail 46 are arranged even at the portion located between the driver's seat and the passenger seat.

[0026] The seats 31 in the second row are arranged on the first slide rail 45. The seats 31 in the second row are slidable in the longitudinal direction of the vehicle along the first slide rail 45. The seats 32 in the third row are arranged on the second slide rail 46. The seats 32 in the third row are slidable in the longitudinal direction of the vehicle along the second slide rail 46.

[0027] <Regarding the equipment installed under the floor panel 100> FIG. 7 is a schematic view of the plug-in hybrid vehicle 1 as seen from above in a top view of the vehicle, similar to FIG. 5. FIG. 7 schematically shows the arrangement of the equipment installed under the floor panel 100. Further, FIG. 7 schematically shows the arrangement of the in-vehicle charger 40, the branch box 41, and the DC / DC converter 42 installed on the floor panel 100. In FIG. 7, 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.

[0028] The battery 50 is arranged 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 arranged 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 arranged so that the center of gravity position 51 of the battery 50 is offset from the center line CL to one side in the vehicle width direction.

[0029] 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 arranged 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 is curved so as to be located closer to the inside 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.

[0030] 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 closer to the side opposite to the side where the battery 50 is positioned in the vehicle width direction. Further, the exhaust pipe 54 is disposed through the space 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.

[0031] The fuel tank 52 is disposed behind the battery 50 in the vehicle. The fuel tank 52 is connected to the fuel filler port 17 via a fuel supply pipe 62. A fuel vapor recovery device 55 is disposed behind the vehicle of the rear-wheel drive motor generator MGR and laterally of the muffler 53 in the vehicle width direction. The fuel vapor recovery device 55 is a canister that adsorbs fuel vapor gas generated inside the fuel tank 52.

[0032] The in-vehicle charger 40 is connected to the battery 50 via a wire harness. The wire harness connecting the in-vehicle charger 40 and the battery 50 is routed between the battery 50 and the exhaust pipe 54.

[0033] The branch box 41 is connected to the battery 50 via a wire harness. The wire harness connecting the branch box 41 and the battery 50 is routed between the battery 50 and the exhaust pipe 54.

[0034] The DC / DC converter 42 is connected to the branch box 41 via a wire harness. The wire harness connecting the DC / DC converter 42 and the branch box 41 is routed between the battery 50 and the exhaust pipe 54.

[0035] The branch box 41 is connected to the second charging port 19 via a wire harness. The wire harness connecting the branch box 41 and the second charging port 19 is routed between the battery 50 and the exhaust pipe 54.

[0036] The in-vehicle charger 40 is connected to the first charging port 18 via a wire harness. <Regarding the drive system of the plug-in hybrid vehicle 1> FIG. 8 schematically shows the configuration of the drive system and the electrical system in the plug-in hybrid vehicle 1 of the embodiment.

[0037] As shown in FIG. 8, 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.

[0038] 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 AC type motor generator. The power split mechanism 23 is a planetary gear mechanism. The power split mechanism 23 can split the driving force among the engine 21, the first motor generator MG1, and the front wheels 14.

[0039] The first motor generator MG1 generates electricity by receiving the driving force of the engine 21 and 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. In this case, 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.

[0040] 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.

[0041] 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, power generation is performed by the second motor generator MG2 using the driving force from the front wheels 14. Then, the generated power is used to charge the battery 50. That is, the plug-in hybrid vehicle 1 performs regenerative charging. In this case, 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.

[0042] 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.

[0043] 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 to 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 to the battery 50.

[0044] <Regarding the electrical system of the plug-in hybrid vehicle 1> As shown in FIG. 8, the plug-in hybrid vehicle 1 includes an in-vehicle charger 40, a branch box 41, and a DC / DC converter 42. 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.

[0045] As shown in FIG. 8, 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.

[0046] 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.

[0047] 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.

[0048] The air conditioner 57 is a device that conditions the air in 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.

[0049] 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.

[0050] The DC / DC converter 42 is a device that steps down the voltage of the battery 50 and supplies it to auxiliary devices. Auxiliary devices 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.

[0051] <Actions of this Embodiment> When the in-vehicle charger 40 is disposed under the floor panel 100, the size of the battery 50 that can be disposed under the floor panel 100 may become small, or a low floor may not be achievable. When the in-vehicle charger 40 is disposed on the floor panel 100, depending on the position where the in-vehicle charger 40 is disposed, a flat floor may not be achievable.

[0052] According to the above configuration, the plug-in hybrid vehicle 1 can secure a space for mounting a large battery 50 under the floor panel 100 without raising the position of the floor panel 100. Further, by disposing the in-vehicle charger 40 behind the vehicle axle of the rear wheel 15, the floor on which the first slide rail 45 and the second slide rail 46 are disposed can be made flat up to the rear of the vehicle near the rear wheel 15. Thereby, the long first slide rail 45 can be disposed on the floor. Therefore, the slide amount of the second-row seat 31 can be ensured.

[0053] <Effects of the present embodiment> (1) The plug-in hybrid vehicle 1 described above can achieve a low and flat floor while mounting a large battery 50 and secure a wide cabin space.

[0054] (2) In the plug-in hybrid vehicle 1, a DC / DC converter 42 is disposed above the floor panel 100 and behind the vehicle with respect to the axle of the rear wheels 15. If the DC / DC converter 42 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. On the other hand, when the DC / DC converter 42 is disposed above the floor panel 100, depending on the position where the DC / DC converter 42 is disposed, a flat floor cannot be realized. 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. Further, by disposing the DC / DC converter 42 behind the vehicle with respect to the axle of the rear wheels 15, the floor on which the first slide rail 45 and the second slide rail 46 are disposed can be made flat up to the rear of the vehicle near the rear wheels 15. Thereby, a long first slide rail 45 can be disposed on the floor. Therefore, the above plug-in hybrid vehicle 1 can secure the slide amount of the second-row seat 31.

[0055] (3) In the plug-in hybrid vehicle 1, a DC / DC converter 42 is disposed on the side in the vehicle width direction of the on-vehicle charger 40. According to the above configuration, compared with the case where the DC / DC converter 42 is provided in front of the on-vehicle charger 40 in the vehicle length direction or the case where the DC / DC converter 42 is provided behind the on-vehicle charger 40 in the vehicle length direction, the range in which the floor is flat in the vehicle length direction becomes wider. The wider the range in which the floor is flat in the vehicle length direction, the longer the first slide rail 45 can be disposed on the floor. The above plug-in hybrid vehicle 1 can secure the slide amount of the second-row seat 31.

[0056] (4) The plug-in hybrid vehicle 1 is provided with 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 and the second charging port 19 are disposed on the side surface of the vehicle behind the sliding door 4 and closer to the in-vehicle charger 40. The in-vehicle charger 40 and the first charging port 18 are connected by a wire harness. In the above plug-in hybrid vehicle 1, the first charging port 18 is installed on the side of the vehicle closer to the in-vehicle charger 40. Thereby, the wire harness between the in-vehicle charger 40 and the first charging port 18 can be shortened. If the wire harness is short, the weight of the wire harness is reduced. That is, the weight of the vehicle is reduced. In addition, if the wire harness is short, the power loss in the wire harness is also reduced. The above plug-in hybrid vehicle 1 can reduce the weight of the vehicle and the power loss in the wire harness.

[0057] (5) The plug-in hybrid vehicle 1 is provided with a branch box 41 that branches the power supplied from the battery 50. The branch box 41 is disposed under the seat 30 in the first row and above the floor panel 100. When the branch box 41 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 branch box 41 is disposed above the floor panel 100, depending on the position where the branch box 41 is disposed, a flat floor cannot be realized. According to the above configuration, the plug-in hybrid vehicle 1 can 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 branch box 41 under the seat 30 in the first row, the floor on which the slide rail is disposed can be flattened up to the rear of the vehicle near the rear wheels 15. Thereby, a long first slide rail 45 can be disposed on the floor. Therefore, the sliding amount of the seat 31 in the second row can be ensured. The above plug-in hybrid vehicle 1 can realize a low and flat floor and secure a wide cabin space while mounting a large battery 50.

[0058] (6) The first-row seat 30 consists of two seats, a right seat and a left seat. These two seats are the driver's seat and the front passenger seat. The branch box 41 is disposed under one of the two seats. The floor panel 100 at the portion located between the two seats is at the same height as the floor panel 100 where the slide rails are disposed. According to the above configuration, the floor between the right seat and the left seat constituting the first-row seat 30 becomes a flat floor connected to the floor behind the first-row seat 30. Therefore, the passenger can easily move through the passenger compartment 16 between the right seat and the left seat without getting out of the vehicle. The above plug-in hybrid vehicle 1 can move the second-row seat 31 and the first-row seat 30 without getting out of the vehicle compartment.

[0059] <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.

[0060] · The plug-in hybrid vehicle 1 may not have the DC / DC converter 42 disposed above the floor panel 100 and behind the vehicle axle of the rear wheels 15. For example, the plug-in hybrid vehicle 1 may have the DC / DC converter 42 disposed above the floor panel 100 and under the first-row seat 30.

[0061] · The plug-in hybrid vehicle 1 may not have the DC / DC converter 42 disposed on the side in the vehicle width direction of the in-vehicle charger 40. For example, the plug-in hybrid vehicle 1 may have the DC / DC converter 42 disposed in front of the in-vehicle charger 40 in the vehicle length direction. For example, the plug-in hybrid vehicle 1 may have the DC / DC converter 42 disposed behind the in-vehicle charger 40 in the vehicle length direction.

[0062] · The position of the first charging port 18 connected to the in-vehicle charger 40 is not limited to the side of the vehicle where the in-vehicle charger 40 is located and behind the sliding door 4 on the vehicle side. For example, the first charging port 18 may be arranged on the side of the vehicle opposite to the side where the in-vehicle charger 40 is located.

[0063] · The plug-in hybrid vehicle 1 may not be provided with the branch box 41. For example, when the battery 50 has the function of branching current, the plug-in hybrid vehicle 1 may not be provided with the branch box 41.

[0064] · The branch box 41 of the plug-in hybrid vehicle 1 may be arranged other than under the right seat in the first row of seats 30. For example, the branch box 41 may be arranged under the left seat in the first row of seats 30. For example, the branch box 41 may be arranged between the right seat and the left seat in the first row of seats 30.

[0065] · The plug-in hybrid vehicle 1 may be an autonomous vehicle. In that case, the plug-in hybrid vehicle 1 may not be provided with a driver's seat. In this case, the plug-in hybrid vehicle 1 includes a right seat and a left seat as the first row of seats 30. And the branch box 41 is arranged under the right seat. The branch box 41 of the plug-in hybrid vehicle 1 may be arranged other than under the right seat. For example, the branch box 41 may be arranged under the left seat. For example, the branch box 41 may be arranged between the right seat and the left seat.

Description of Reference Numerals

[0066] 1…Plugin hybrid vehicle, 2…Front door, 3…Vehicle opening, 4…Sliding door, 5…Step panel, 6…Sliding 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…On-vehicle charger, 41…Branch box, 42…DC / DC converter, 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, 100…Floor panel, 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 a minivan type having no partition between a passenger compartment and a cargo compartment, comprising: 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; an in-vehicle charger for charging the battery with external electric power; a converter for converting the voltage of the electric power supplied from the battery; 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, comprising an engine compartment in front of the vehicle relative to the passenger compartment, wherein the engine, the motor, the power transmission mechanism, and the inverter are disposed in the engine compartment, wherein a first row of seats and a second row of seats located behind the first row of seats in the vehicle rearward direction are disposed on a floor panel constituting the floor surface of the passenger compartment, wherein in a side view of the vehicle, the first row of seats is located behind the front wheels in the vehicle rearward direction, the second row of seats is located in front of the rear wheels in the vehicle forward direction, and 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, under the floor panel, wherein the battery, the fuel tank, and the exhaust pipe are disposed, wherein the in-vehicle charger is disposed behind the vehicle axle of the rear wheels and above the floor panel. A plug-in hybrid vehicle.

2. The converter is disposed behind the vehicle axle of the rear wheels and above the floor panel. The plug-in hybrid vehicle according to Claim 1.

3. The converter is disposed laterally of the in-vehicle charger in the vehicle width direction. The plug-in hybrid vehicle according to Claim 2.

4. Comprising a charging port into which a charging plug is inserted from outside the vehicle, wherein the charging port is disposed on a side surface of the vehicle behind the sliding door and closer to the in-vehicle charger, wherein the in-vehicle charger and the charging port are connected by a wire harness. The plug-in hybrid vehicle according to Claim 1.

5. Comprising a branch box for branching the electric power supplied from the battery, wherein the branch box is disposed under the first row of seats and above the floor panel. The plug-in hybrid vehicle according to Claim 1.

6. The sheet in the first column consists of two seats, a right seat and a left seat. The branch box is disposed under one of the two seats. The floor panel of the portion located between the two seats is at the same height as the floor panel of the portion where the slide rail is disposed. The plug-in hybrid vehicle according to claim 5.

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