Plug-in hybrid vehicle

Abstract

To provide a minivan-type plug-in hybrid vehicle which can achieve 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. In the minivan-type plug-in hybrid vehicle 1, a first wire harness 81, a third wire harness 83, a fourth wire harness 84, and a fifth wire harness 85 are routed under the floor panel 100 in a vehicle front-rear direction through a side of the fuel tank 52. The wire harnesses transmit electric power. Further, the wire harnesses are routed in the vehicle front-rear direction through between the battery 50 and the exhaust pipe 54.SELECTED DRAWING: Figure 7

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 a hybrid vehicle in which an engine and a drive motor are arranged as drive sources, and a battery, high-voltage system components, and exhaust system components are compactly arranged under a floor panel.

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 desired that the floor behind the first-row seat has a low and flat structure.

Means for Solving the Problems

[0005] Hereinafter, the means for solving the above problems and their operational effects will be described. A 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 passenger compartment, a first row seat and a second row seat located rearward of the vehicle relative to the first row seat are disposed. In a side view of the vehicle, the first row seat is located rearward of the vehicle relative to the front wheels, the second row seat is located forward of the vehicle relative to the rear wheels, and 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, the exhaust pipe, and the muffler disposed under the floor panel. In the hybrid vehicle, a wire harness for transmitting electric power is routed in the vehicle front-rear direction through the side of the fuel tank.

Effect of the Invention

[0006] The plug-in hybrid vehicle can realize a low and flat floor and secure a wide passenger compartment space.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0008] 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 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.

[0009] The vehicle opening 3 is opened and closed by a slide door 4 that moves in the vehicle front-rear direction. Further, 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 front-rear 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.

[0010] 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 of the plug-in hybrid vehicle 1 and behind the vehicle with respect to the slide 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 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] <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.

[0016] The floor 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 wheel 14. In a side view of the vehicle, the second-row seat 31 is located in front of the vehicle relative to the rear wheel 15.

[0017] As shown in FIG. 4, a branch box 41 is arranged below the first-row seat 30 and above the floor panel 100 in the plug-in hybrid vehicle 1. The branch box 41 is a high-voltage system component. Details of the branch box 41 will be described later.

[0018] The plug-in hybrid vehicle 1 is provided with an in-vehicle charger 40 and a DC / DC converter 42 behind the vehicle axle of the rear wheel 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.

[0019] 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 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 supplied to the engine 21. The muffler 53 reduces exhaust noise.

[0020] 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.

[0021] 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.

[0022] <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.

[0023] 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.

[0024] As shown in FIG. 5, the branch box 41 is arranged under the driver's seat. As a result, 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.

[0025] 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.

[0026] <Regarding the equipment arranged under the floor panel 100> FIG. 7 is a schematic view in a top view of the vehicle looking down from above the plug-in hybrid vehicle 1 in the same manner as FIG. 5. FIG. 7 schematically shows the arrangement of the equipment arranged 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 arranged 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.

[0027] 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.

[0028] 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.

[0029] The plug-in hybrid vehicle 1 has an exhaust pipe 54 disposed under the floor panel 100 to guide 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 arranged in the region RA on the right side of the vehicle. That is, the exhaust pipe 54 is arranged closer to the side opposite to the side where the battery 50 is located in the vehicle width direction. Further, the exhaust pipe 54 is arranged 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.

[0030] 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.

[0031] The wire harness transmits electric power. The on-vehicle charger 40 is connected to the battery 50 via a first wire harness 81. The first wire harness 81 is routed between the battery 50 and the exhaust pipe 54. The first wire harness 81 is routed in the vehicle longitudinal direction passing by the side of the fuel tank 52.

[0032] The branch box 41 is connected to the battery 50 via a second wire harness 82. The second wire harness 82 is routed between the battery 50 and the exhaust pipe 54. The DC / DC converter 42 is connected to the branch box 41 via a third wire harness 83. The third wire harness 83 is routed between the battery 50 and the exhaust pipe 54. The third wire harness 83 is routed in the vehicle longitudinal direction passing by the side of the fuel tank 52.

[0033] The branch box 41 is connected to the second charging port 19 via the fourth wire harness 84. The fourth wire harness 84 is routed between the battery 50 and the exhaust pipe 54. The fourth wire harness 84 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52.

[0034] The rear-wheel drive motor generator MGR is connected to the power control unit 22 via the fifth wire harness 85. The fifth wire harness 85 is routed between the battery 50 and the exhaust pipe 54. The fifth wire harness 85 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52.

[0035] The on-vehicle charger 40 is connected to the first charging port 18 via the sixth wire harness 86. The battery 50 is connected to the power control unit 22 via the seventh wire harness 87.

[0036] <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] In addition, the engine 21 is connected to the front wheels 14 via a power split mechanism 23 and a 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 a 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 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. 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.

[0040] The first motor generator MG1 and the second motor generator MG2 are connected to the battery 50 via a power control unit 22 and a seventh wire harness 87. The AC power generated by the first motor generator MG1 is converted into DC power by the power control unit 22. Then, the DC power converted by the power control unit 22 is charged to the battery 50 via the seventh wire harness 87. That is, the power control unit 22 functions as an inverter.

[0041] Also, the DC power of the battery 50 is supplied to the power control unit 22 via the seventh wire harness 87. The supplied DC power is converted into AC power by the power control unit 22. The AC power converted by the power control unit 22 is 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 charged to 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. The DC power converted by the power control unit 22 is charged to the battery 50 via the seventh wire harness 87.

[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 the rear-wheel reduction mechanism 56. The DC power of the battery 50 is converted into AC power by the power control unit 22 and then supplied to the rear-wheel drive motor generator MGR via the fifth wire harness 85. 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 then charged to the battery 50 via the fifth wire harness 85.

[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 first wire harness 81. The branch box 41 is connected to the battery 50 via a second wire harness 82. Further, the DC / DC converter 42 is connected to the branch box 41 via a third wire harness 83.

[0046] The in-vehicle charger 40 is connected to the first charging port 18 via a sixth wire harness 86. 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 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.

[0049] The branch box 41 is connected to the second charging port 19 via the fourth wire harness 84. 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] <Operation of this Embodiment> When the wire harness is routed above the fuel tank 52, in order to make the floor of the plug-in hybrid vehicle 1 flat, the floor panel 100 has to be installed at a position higher than the wire harness. When the wire harness is routed through the side of the fuel tank 52 as in the above configuration, the position of the floor panel 100 can be made lower than when the wire harness is routed above the fuel tank 52. When the position of the floor panel 100 is lowered, the cabin space in the height direction becomes wider.

[0052] <Effect of this Embodiment> (1) The above plug-in hybrid vehicle 1 can realize a low and flat floor and secure a wide cabin space.

[0053] (2) The plug-in hybrid vehicle 1 is equipped with a rear-wheel drive motor generator MGR. The rear-wheel drive motor generator MGR is driven by a power control unit 22. Under the floor panel 100, the rear-wheel drive motor generator MGR is disposed behind the vehicle relative to the fuel tank 52. The wire harness for transmitting power includes a fifth wire harness 85 that connects the rear-wheel drive motor generator MGR and the power control unit 22. With the above configuration, if the fifth wire harness 85 is routed through the side of the fuel tank 52, the position of the floor panel 100 in the passenger compartment space can be lowered compared to the case where the fifth wire harness 85 is routed above the fuel tank 52. By lowering the position of the floor panel 100, the passenger compartment space in the height direction of the vehicle becomes wider. Therefore, even though the plug-in hybrid vehicle 1 is equipped with the rear-wheel drive motor generator MGR, it can achieve a low and flat floor and secure a wide passenger compartment space.

[0054] (3) In the plug-in hybrid vehicle 1, the fuel tank 52 is disposed behind the vehicle relative to the battery 50. The battery 50 and the power control unit 22 are connected by a seventh wire harness 87. With the above configuration, if the battery 50 is arranged in front of the vehicle relative to the fuel tank 52, the distance between the power control unit 22 in the engine compartment 20 and the battery 50 becomes shorter. As a result, the seventh wire harness 87 required for connecting the battery 50 and the power control unit 22 can be shorter. The shorter the seventh wire harness 87, the more the power loss in the seventh wire harness 87 can be reduced. Therefore, the above plug-in hybrid vehicle 1 can reduce the power loss in the seventh wire harness 87 routed between the battery 50 and the power control unit 22.

[0055] (4) In the plug-in hybrid vehicle 1, the battery 50 is disposed across both the region RA on the right side of the vehicle and the region LA on the left side of the vehicle through the center in the vehicle width direction. Further, the battery 50 is disposed closer 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 in the vehicle width direction. The wire harness routed in the vehicle longitudinal direction through the side of the fuel tank 52 is disposed closer to the side opposite to the side where the battery 50 is disposed in the vehicle width direction. The wire harness routed in the vehicle longitudinal direction through the side of the fuel tank 52 is disposed through the side of the battery 50. When the wire harness is disposed under the floor panel 100 through above or below the battery 50, it becomes impossible to achieve a low floor or a flat floor. Therefore, it becomes impossible to secure a wide cabin space. It is also conceivable to divide and dispose the battery 50 on the side of the wire harness so that the wire harness passes through the center of the vehicle. However, in this case, a plurality of small batteries will be mounted. According to the above configuration, it is possible to secure a space for mounting the wire harness on the side of the battery 50 and under the floor panel 100. By disposing the wire harness on the side of the battery 50, a flat floor can be secured without raising the position of the floor panel 100. Therefore, the above plug-in hybrid vehicle 1 can achieve a low and flat floor, secure a wide cabin space, and mount a large battery 50.

[0056] (5) In the plug-in hybrid vehicle 1, the muffler 53 is disposed behind the vehicle relative to the rear-wheel drive motor generator MGR. The exhaust pipe 54 is disposed to connect the engine 21 and the muffler 53 through the sides of the battery 50 and the fuel tank 52. The wire harness routed in the plug-in hybrid vehicle 1 includes a wire harness routed in the longitudinal direction of the vehicle through between the battery 50 and the exhaust pipe 54 and between the fuel tank 52 and the exhaust pipe 54. With the above configuration, when the wire harness is routed between the battery 50 and the exhaust pipe 54, an impact from the side of the vehicle is absorbed by the exhaust pipe 54 before reaching the wire harness. Therefore, the above plug-in hybrid vehicle 1 can protect the wire harness from an impact from the side of the vehicle.

[0057] (6) The plug-in hybrid vehicle 1 includes a branch box 41 that branches the electric power supplied from the battery 50 and a DC / DC converter 42 that converts the voltage of the electric power supplied from the battery 50. The branch box 41 is disposed under the first-row seat 30 and above the floor panel 100. The DC / DC converter 42 is disposed behind the vehicle relative to the axle of the rear wheel 15 and above the floor panel 100. The wire harness routed in the plug-in hybrid vehicle 1 includes a third wire harness 83 that connects the branch box 41 and the DC / DC converter 42. A high voltage may be applied to the third wire harness 83 that connects the branch box 41 and the DC / DC converter 42. Therefore, it is preferable to adopt a structure that protects the third wire harness 83 from an impact from outside the vehicle. When the third wire harness 83 is routed between the battery 50 and the exhaust pipe 54, an impact from the side of the vehicle is absorbed by the exhaust pipe 54 before reaching the third wire harness 83. That is, the third wire harness 83 is protected from an impact from the side of the vehicle. Therefore, the above plug-in hybrid vehicle 1 can protect the third wire harness 83 that connects the branch box 41 and the DC / DC converter 42 from an impact from the side of the vehicle.

[0058] (7) In the plug-in hybrid vehicle 1, an in-vehicle charger 40 is disposed above the floor panel 100 and behind the vehicle axle of the rear wheels 15. The wire harness routed in the plug-in hybrid vehicle 1 includes a first wire harness 81 that connects the battery 50 and the in-vehicle charger 40. A high voltage may be applied to the first wire harness 81 that connects the battery 50 and the in-vehicle charger 40. Therefore, it is preferable to adopt a structure that protects the first wire harness 81 from impacts from outside the vehicle. When the first wire harness 81 is routed between the battery 50 and the exhaust pipe 54, the impact from the side of the vehicle is absorbed by the exhaust pipe 54 before reaching the first wire harness 81. That is, the first wire harness 81 is protected from impacts from the side of the vehicle. Therefore, the above plug-in hybrid vehicle 1 can protect the first wire harness 81 that connects the battery 50 and the in-vehicle charger 40 from impacts from the side of the vehicle.

[0059] (8) The plug-in hybrid vehicle 1 is provided with a second charging port 19 into which a charging plug is inserted from outside the vehicle. The second charging port 19 is disposed behind the vehicle and on the side surface of the vehicle and behind the sliding door 4. The wire harness routed in the plug-in hybrid vehicle 1 includes a fourth wire harness 84 that connects the second charging port 19 and the branch box 41. A high voltage may be applied to the fourth wire harness 84 that connects the second charging port 19 and the branch box 41. Therefore, it is preferable to adopt a structure that protects the fourth wire harness 84 from impacts from outside the vehicle. When the fourth wire harness 84 is routed between the battery 50 and the exhaust pipe 54, the impact from the side of the vehicle is absorbed by the exhaust pipe 54 before reaching the fourth wire harness 84. That is, the fourth wire harness 84 is protected from impacts from the side of the vehicle. Therefore, the above plug-in hybrid vehicle 1 can protect the fourth wire harness 84 that connects the second charging port 19 and the branch box 41 from impacts from the side of the vehicle.

[0060] <Modified 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.

[0061] · The plug - in hybrid vehicle 1 may control the drive motor in the engine compartment 20 and the rear - wheel drive motor - generator MGR by different power control units respectively.

[0062] · In addition to the power control unit 22 in the engine compartment 20, the plug - in hybrid vehicle 1 may further include a power control unit outside the engine compartment 20.

[0063] · If the wire harness is routed in the vehicle longitudinal direction through the side of the fuel tank 52, the fuel tank 52 may be disposed behind the battery 50 in the plug - in hybrid vehicle 1. FIG. 9 is a schematic diagram showing the arrangement of devices disposed under the floor panel 100 in the plug - in hybrid vehicle 1. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the vehicle longitudinal direction through the side of the fuel tank 52. Further, the fuel tank 52 is disposed in front of the battery 50 in the vehicle.

[0064] · If the wire harness is routed in the vehicle longitudinal direction through the side of the fuel tank 52, the wire harness may not be routed between the battery 50 and the exhaust pipe 54 in the plug - in hybrid vehicle 1. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the vehicle longitudinal direction through the side of the fuel tank 52. Further, no wire harness is routed between the battery 50 and the exhaust pipe 54.

[0065] · If the wire harness is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52, the first wire harness 81 may not be routed between the battery 50 and the exhaust pipe 54. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52. In this case, the first wire harness 81 connecting the battery 50 and the on-vehicle charger 40 may not be routed between the battery 50 and the exhaust pipe 54.

[0066] · If the wire harness is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52, the third wire harness 83 may not be routed between the battery 50 and the exhaust pipe 54. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52. In this case, the third wire harness 83 connecting the branch box 41 and the DC / DC converter 42 may not be routed between the battery 50 and the exhaust pipe 54.

[0067] · If the wire harness is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52, the fourth wire harness 84 may not be routed between the battery 50 and the exhaust pipe 54. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52. In this case, the fourth wire harness 84 connecting the second charging port 19 and the branch box 41 may not be routed between the battery 50 and the exhaust pipe 54.

[0068] · If the wire harness of the plug-in hybrid vehicle 1 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52, the plug-in hybrid vehicle 1 may not be provided with the fifth wire harness 85 and the rear-wheel drive motor generator MGR. As shown in FIG. 9, the seventh wire harness 87 connecting the power control unit 22 and the battery 50 is routed in the longitudinal direction of the vehicle through the side of the fuel tank 52. In this case, the plug-in hybrid vehicle 1 may not be provided with the fifth wire harness 85 and the rear-wheel drive motor generator MGR.

[0069] · 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.

[0070] · The first charging port 18 of the plug-in hybrid vehicle 1 may be disposed at a location other than the rear of the vehicle with respect to the vehicle side surface and the sliding door 4. · The second charging port 19 of the plug-in hybrid vehicle 1 may be disposed at a location other than the rear of the vehicle with respect to the vehicle side surface and the sliding door 4.

[0071] · 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 the charging port into which the charging plug is inserted.

[0072] · 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 the charging port into which the charging plug is inserted.

[0073] · 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.

[0074] · The plug-in hybrid vehicle 1 may have the branch box 41 disposed other than under the right seat in the first row of seats 30. For example, the branch box 41 may be disposed under the left seat in the first row of seats 30. For example, the branch box 41 may be disposed between the right seat and the left seat in the first row of seats 30.

[0075] · 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 disposed under the right seat. The plug-in hybrid vehicle 1 may have the branch box 41 disposed other than under the right seat. For example, the branch box 41 may be disposed under the left seat. For example, the branch box 41 may be disposed between the right seat and the left seat.

[0076] · If the wire harness is routed in the vehicle longitudinal direction through the side of the fuel tank 52, the battery 50 may not be routed across both the region RA on the right side of the vehicle and the region LA on the left side of the vehicle through the center in the vehicle width direction.

[0077] · If the wire harness is routed in the vehicle longitudinal direction through the side of the fuel tank 52, the center of gravity position 51 of the battery 50 may not be offset to one side in the vehicle width direction so as to be shifted from the center in the vehicle width direction.

[0078] ·In the plug-in hybrid vehicle 1, if the wire harness is routed in the vehicle longitudinal direction through the side of the fuel tank 52, the wire harness does not have to be routed closer to the side opposite to the side where the battery 50 is brought closer in the vehicle width direction.

Explanation of Signs

[0079] 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…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, 81…First wire harness, 82…Second wire harness, 83…Third wire harness, 84…Fourth wire harness, 85…Fifth wire harness, 86…Sixth wire harness, 87…Seventh wire harness, 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 minivan type, which is equipped with an engine and a motor as power sources, a fuel tank for storing fuel to be supplied to the engine, a battery for storing electric power to be 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, and in which the passenger compartment and the cargo compartment are not partitioned, comprises 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 first row of seats in the vehicle are arranged, in a side view of the vehicle, the first row of seats is located behind the front wheels, the second row of seats is located in front of the rear wheels, 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, below the floor panel, the battery, the fuel tank, the exhaust pipe, and the muffler are arranged, and a wire harness for transmitting electric power is routed in the vehicle longitudinal direction through the side of the fuel tank. A plug-in hybrid vehicle.

2. Comprises a rear-wheel drive motor, the rear-wheel drive motor is driven by the inverter, below the floor panel, the rear-wheel drive motor is arranged behind the fuel tank in the vehicle, and the wire harness includes a wire harness connecting the rear-wheel drive motor and the inverter. The plug-in hybrid vehicle according to claim 1.

3. The fuel tank is arranged behind the battery in the vehicle, and the battery and the inverter are connected by a wire harness different from the wire harness. The plug-in hybrid vehicle according to claim 1.

4. The battery extends across both a region on the right side and a region on the left side of the vehicle through the center in the vehicle width direction, and is arranged so as to be shifted 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 wire harness is disposed on the side opposite to the side where the battery is located in the vehicle width direction, and is disposed through the side of the battery. The plug-in hybrid vehicle according to claim 1.

5. Equipped with a rear-wheel drive motor, The muffler is located behind the vehicle relative to the rear-wheel drive motor, The exhaust pipe is disposed to connect the engine and the muffler through the sides of the battery and the fuel tank, The wire harness is routed in the vehicle longitudinal direction between the battery and the exhaust pipe, and between the fuel tank and the exhaust pipe. The plug-in hybrid vehicle according to claim 4.

6. A branch box for branching the power supplied from the battery, A converter for converting the voltage of the power supplied from the battery, and The branch box is disposed under the first row of seats and above the floor panel, The converter is disposed behind the vehicle relative to the axle of the rear wheels and above the floor panel, The wire harness includes a wire harness connecting the branch box and the converter. The plug-in hybrid vehicle according to claim 5.

7. The on-vehicle charger is disposed behind the vehicle relative to the axle of the rear wheels and above the floor panel, The wire harness includes a wire harness connecting the battery and the on-vehicle charger. The plug-in hybrid vehicle according to claim 5.

8. A sliding door on the side of the vehicle, A charging port into which a charging plug is inserted from outside the vehicle, and A branch box for branching the power supplied from the battery, and The charging port is disposed on the side surface of the vehicle and behind the sliding door, The wire harness includes a wire harness connecting the charging port and the branch box. The plug-in hybrid vehicle according to claim 5.

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