Plug-in hybrid vehicle

Abstract

To provide a minivan-type plug-in hybrid vehicle on which a large battery can be mounted while achieving a low, flat floor to ensure a spacious cabin space.SOLUTION: A minivan-type plug-in hybrid vehicle 1 includes a battery 50, a fuel tank 52, and an exhaust pipe 54 which are disposed under a floor panel. The battery 50 is disposed across both a vehicle right area RA and a vehicle left area LA through a vehicle width direction center. The battery 50 is disposed close to one side in a vehicle-width direction such that a gravity center position 51 of the battery 50 is offset from the vehicle width direction center. The exhaust pipe 54 is disposed close to an opposite side in the vehicle width direction to the side close to which the battery 50 is disposed. The exhaust pipe 54 is disposed through a side of the battery 50.SELECTED DRAWING: Figure 6

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 a 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 sliding door is known. In order to ensure the sliding 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. That is, in a minivan-type plug-in hybrid vehicle, it is desired to mount 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 power transmission mechanism for transmitting the rotational power of the engine and the motor to the front wheels, an inverter for driving the motor, an exhaust pipe for guiding the exhaust from the engine to the rear of the vehicle, and a muffler for reducing exhaust noise. 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 vehicle, a first row of seats and a second row of seats located behind the first row of seats are disposed. In a side view of the vehicle, the first row of seats is located behind the front wheels of the vehicle, and the second row of seats is located in front of the rear wheels of the vehicle. The second row of seats is slidable in the longitudinal direction of the vehicle along a slide rail extending in the longitudinal direction of the vehicle provided on the floor panel. In the plug-in hybrid vehicle, the battery, the fuel tank, the exhaust pipe, and the muffler are disposed under the floor panel. The battery extends across both a region on the right side of the vehicle and a region on the left side of the vehicle through the center in the vehicle width direction, and the battery is disposed closer to one side in the vehicle width direction so that the center of gravity position of the battery is offset from the center in the vehicle width direction. The exhaust pipe is disposed closer to the side opposite to the side to which the battery is shifted in the vehicle width direction and is disposed through the side of the battery.

Effect of the Invention

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

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> Figure 1 is a schematic diagram showing the plug - in hybrid vehicle 1 of 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. A charging lid 61 is disposed in front of the front door 2 on the side surface of the plug - in hybrid vehicle 1. 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 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 relative to the front wheels 14. The rear end of the guide rail 11 is located in front of the vehicle relative to the rear wheels 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 relative to the slide door 4. 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 vehicle side surface behind the vehicle relative 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 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. Thus, 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 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 when the plug-in hybrid vehicle 1 is viewed 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. 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 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 behind the vehicle relative to the seats 31 in the second row.

[0018] As shown in FIG. 3, in the plug-in hybrid vehicle 1, high-voltage system components HVC are disposed below the seats 30 in the first row and above the floor panel 100. Details of the high-voltage system components 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 in front of the vehicle relative to the high-voltage system components HVC. The second cross member 44 is disposed behind the vehicle relative to the high-voltage system components HVC. That is, the first cross member 43 and the second cross member 44 are disposed so as to sandwich the high-voltage system components 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 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 behind the vehicle relative to the battery 50. The rear-wheel drive motor generator MGR is disposed behind the vehicle relative to the fuel tank 52. The muffler 53 is disposed behind the vehicle relative to 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 diagram 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] Behind the vehicle with respect to the high-voltage component HVC, a first slide rail 45 extending in the vehicle front-rear direction is disposed. Behind the vehicle with respect to the first slide rail 45, a second slide rail 46 extending in the vehicle front-rear 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 side surface of the vehicle 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 front-rear 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 front-rear direction along the second slide rail 46.

[0025] <Regarding the devices disposed under the floor panel 100> FIG. 6 is a schematic diagram in a top view of the vehicle looking down from above the plug-in hybrid vehicle 1 as in 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 so as to be shifted to one side in the vehicle width direction such 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 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.

[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 closer 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 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 on the side in the vehicle width direction of the muffler 53. The fuel vapor recovery device 55 is a canister that adsorbs 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 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 reduction gear mechanism 24. The rotational power of the second motor generator MG2 is transmitted to the front wheels 14 via the reduction gear mechanism 24 which is a power transmission mechanism. That is, the second motor generator MG2 functions as a drive motor.

[0032] Further, the engine 21 is connected to the front wheels 14 via the power split mechanism 23 and the reduction gear mechanism 24. The power split mechanism 23 is a power transmission mechanism similar to the reduction gear 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.

[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. Further, when starting the engine 21, the first motor generator MG1 also serves as a starter for driving the crankshaft which is the output shaft of the engine 21. In that 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.

[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, 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. 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 rear-wheel reduction mechanism 56. 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 electric 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.

[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 devices. The auxiliary devices are, 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 the present embodiment> When the exhaust pipe 54 is disposed under the floor panel 100 passing above or below the battery 50, the plug-in hybrid vehicle 1 may not be able to achieve a low floor or a flat floor. Therefore, a wide passenger compartment space cannot be secured. In order to avoid passing the exhaust pipe 54 above or below the battery 50, it is also conceivable to divide and dispose the battery 50 on the side of the exhaust pipe 54 so that the exhaust pipe 54 passes through the center of the vehicle. However, in this case, the plug-in hybrid vehicle 1 will have to mount a plurality of small batteries.

[0046] According to the configuration shown in the above embodiment, the plug-in hybrid vehicle 1 can secure a space for mounting the exhaust pipe 54 on the side of the battery 50 and under the floor panel 100. By disposing the exhaust pipe 54 on the side of the battery 50, a flat floor can be secured without raising the position of the floor panel 100.

[0047] <Effects of this embodiment> (1) The above plug-in hybrid vehicle 1 can mount a large battery 50 while realizing a low and flat floor and securing a wide passenger compartment space.

[0048] (2) In the plug-in hybrid vehicle 1, the muffler 53 is disposed behind the vehicle relative to the battery 50. The exhaust pipe 54 connects the engine 21 and the muffler 53. The battery 50 is heavier than the muffler 53. According to the above configuration, by disposing the muffler 53 behind the vehicle relative to the battery 50, the heavy battery 50 can be disposed closer to the center in the vehicle longitudinal direction. Thereby, it is possible to prevent the front-rear weight balance of the vehicle from being biased rearward.

[0049] (3) In the plug-in hybrid vehicle 1, the muffler 53 is disposed behind the vehicle relative to the battery 50. The exhaust pipe 54 connects the engine 21 and the muffler 53. The muffler 53 is thicker than the exhaust pipe 54. If the thicker muffler 53 is provided near the center of the vehicle, the space for mounting the battery 50 will be reduced. By disposing the muffler 53 behind the vehicle relative to the battery 50, the space on the side of the battery 50 for passing the exhaust pipe 54 can be narrowed. Thereby, a larger battery 50 can be mounted under the floor panel 100.

[0050] (4) The plug-in hybrid vehicle 1 is provided with a sliding door 4 on the side of the vehicle. Further, the plug-in hybrid vehicle 1 is provided with a guide rail 11 for sliding the sliding door 4 under the floor panel 100. In a side view of the vehicle, 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. In a side view of the vehicle, the guide rail 11 overlaps a part of the battery 50. The muffler 53 is located behind the vehicle with respect to the axle of the rear wheel 15. The exhaust pipe 54 is disposed in the longitudinal direction of the vehicle through between the battery 50 and the guide rail 11. The muffler 53 is thicker than the exhaust pipe 54. With the above configuration, by disposing the muffler 53 behind the axle of the rear wheel 15, there is no need to secure a wide space for disposing the muffler 53 between the battery 50 and the guide rail 11 of the sliding door 4. Therefore, the above plug-in hybrid vehicle 1 can mount a large battery 50 under the floor panel 100 while mounting the sliding door 4.

[0051] (5) The guide rail 11 has a curved portion 13 that curves so as to be located more inward in the vehicle width direction toward the front of the vehicle and draws the sliding door 4 inward in the vehicle width direction. The exhaust pipe 54 is bent outward in the vehicle width direction along the curved portion 13 of the guide rail 11. With the above configuration, since the exhaust pipe 54 is bent and routed along the guide rail 11, the space between the exhaust pipe 54 and the guide rail 11 in the space under the floor panel 100 becomes narrow. Thereby, in the space under the floor panel 100, a wide space for mounting a large battery 50 can be secured. The above plug-in hybrid vehicle 1 can mount a large battery 50 under the floor panel 100.

[0052] (6) The plug-in hybrid vehicle 1 is provided with a rear-wheel drive motor generator MGR under the floor panel 100. The muffler 53 is disposed behind the vehicle rearward of the rear-wheel drive motor generator MGR. In this case, an impact from the rear of the vehicle is absorbed by the muffler 53 before reaching the rear-wheel drive motor generator MGR. The above plug-in hybrid vehicle 1 can protect the rear-wheel drive motor generator MGR from an impact from the rear of the vehicle.

[0053] (7) The plug-in hybrid vehicle 1 is provided with a fuel vapor recovery device 55 behind the vehicle rearward of the rear-wheel drive motor generator MGR and on the side of the muffler 53. In this case, an impact from the rear of the vehicle is absorbed by the muffler 53 and the fuel vapor recovery device 55 before reaching the rear-wheel drive motor generator MGR. The above plug-in hybrid vehicle 1 can protect the rear-wheel drive motor generator MGR from an impact from the rear of the vehicle.

[0054] (8) In the plug-in hybrid vehicle 1, the fuel tank 52 is disposed behind the vehicle rearward of the battery 50. The fuel filler port 17 is disposed on the side of the vehicle and behind the vehicle rearward of the sliding door 4. In this case, the fuel tank 52 and the fuel filler port 17 can be connected without passing a fuel supply pipe 62 around the battery 50. Thereby, the fuel tank 52 and the fuel filler port 17 can be connected without reducing the volume of the battery 50. The above plug-in hybrid vehicle 1 can secure a space for mounting the battery 50 while disposing the fuel tank 52 and the fuel supply pipe 62.

[0055] <Modification Example> This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non-conflicting range.

[0056] ·If the muffler 53 is disposed under the floor panel 100, it may be disposed at a position not rearward of the battery 50 in the vehicle. For example, in the plug-in hybrid vehicle 1, the muffler 53 may be disposed on the side of the battery 50.

[0057] ·The plug-in hybrid vehicle 1 may not be provided with the sliding door 4, the upper rail 7, the center rail 9, and the guide rail 11. ·The plug-in hybrid vehicle 1 may be provided with the sliding door 4, the upper rail 7, the center rail 9, and the guide rail 11 only on one side of the vehicle side.

[0058] ·The exhaust pipe 54 may not be bent outward in the vehicle width direction along the curved portion 13 of the guide rail 11. ·The plug-in hybrid vehicle 1 may not be provided with the rear-wheel drive motor generator MGR.

[0059] ·If the muffler 53 is disposed under the floor panel 100, it may be disposed at a position not rearward of the rear-wheel drive motor generator MGR in the vehicle. For example, in the plug-in hybrid vehicle 1, the muffler 53 may be disposed forward of the rear-wheel drive motor generator MGR in the vehicle.

[0060] ·In the plug-in hybrid vehicle 1, the fuel vapor recovery device 55 may be disposed at a location other than the side of the muffler 53. ·The plug-in hybrid vehicle 1 may not be provided with the fuel vapor recovery device 55.

[0061] ·In the plug-in hybrid vehicle 1, the fuel filler port 17 may be disposed at a location other than the vehicle side surface and rearward of the sliding door 4 in the vehicle. ·In the plug-in hybrid vehicle 1, the charging lid 61 may be disposed at a location other than the vehicle side surface and forward of the front door 2 in the vehicle.

[0062] · 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, as the first row of seats 30, a right seat and a left seat.

[0063] · The plug-in hybrid vehicle 1 may not be provided with the third row of seats 32. In that case, the plug-in hybrid vehicle 1 may not be provided with the second slide rail 46.

[0064] · The plug-in hybrid vehicle 1 may not be provided with the first charging port 18. That is, the plug-in hybrid vehicle 1 may be provided with only the second charging port 19 as a charging port for connecting to an external power source.

[0065] · The plug-in hybrid vehicle 1 may not be provided with the second charging port 19. That is, the plug-in hybrid vehicle 1 may be provided with only the first charging port 18 as a charging port for connecting to an external power source.

Explanation of Signs

[0066] 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, 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 a minivan type, 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 power transmission mechanism for transmitting the rotational power of the engine and the motor to the front wheels, an inverter for driving the motor, an exhaust pipe for guiding the exhaust from the engine to the rear of the vehicle, and a muffler for reducing exhaust noise, wherein the passenger compartment and the cargo compartment are not partitioned, an engine compartment is provided 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, a first row of seats and a second row of seats located behind the first row of seats are disposed on a floor panel constituting the floor surface of the vehicle, 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, below the floor panel, the battery, the fuel tank, the exhaust pipe, and the muffler are disposed, the battery extends across both a region on the right side of the vehicle and a region on the left side of the vehicle through the center in the vehicle width direction, and the battery is disposed shifted toward one side in the vehicle width direction so that the center of gravity position of the battery is offset from the center in the vehicle width direction, the exhaust pipe is disposed shifted toward the side opposite to the side where the battery is shifted in the vehicle width direction and is disposed passing through the side of the battery, a plug-in hybrid vehicle.

2. the muffler is disposed behind the vehicle relative to the battery, the exhaust pipe connects the engine and the muffler The plug-in hybrid vehicle according to claim 1.

3. a sliding door is provided on the side of the vehicle, a guide rail for sliding the sliding door is provided below the floor panel, in a side view of the vehicle, the front end of the guide rail is located behind the front wheels relative to the vehicle, the rear end of the guide rail is located in front of the rear wheels relative to the vehicle, and the guide rail overlaps a part of the battery, the muffler is located behind the vehicle relative to the axle of the rear wheels, The exhaust pipe is disposed in the vehicle longitudinal direction through the space between the battery and the guide rail. The plug-in hybrid vehicle according to claim 2.

4. The guide rail has a curved portion that curves inward in the vehicle width direction toward the front of the vehicle to draw the sliding door inward in the vehicle width direction. The exhaust pipe is bent outward in the vehicle width direction along the curved portion of the guide rail. The plug-in hybrid vehicle according to claim 3.

5. A motor generator for rear-wheel drive is provided under the floor panel. The muffler is disposed behind the vehicle relative to the motor generator for rear-wheel drive. The plug-in hybrid vehicle according to claim 1.

6. A fuel vapor recovery device is provided behind the vehicle relative to the motor generator for rear-wheel drive and on the side of the muffler. The plug-in hybrid vehicle according to claim 5.

7. The fuel tank is disposed behind the vehicle relative to the battery. The fuel filler port is disposed on the side surface of the vehicle and behind the vehicle relative to the sliding door. The plug-in hybrid vehicle according to claim 3.

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