Plug-in hybrid vehicle

Abstract

The invention provides a plug-in hybrid vehicle. A multifunction travel vehicle type plug-in hybrid vehicle is provided with a first row of seats, a second row of seats, and a slide rail, which are provided on a floor that constitutes a floor surface of a vehicle compartment. In the front-back direction of the vehicle, the first row of seats are located behind the front wheels, and the second row of seats are located behind the first row of seats and in front of the rear wheels. The second row of seats can slide on the floor in the front-back direction of the vehicle along the sliding rails. A battery, a fuel tank, and an exhaust pipe are disposed below the floor. The on-board charger is provided on the floor so as to be positioned rearward of the axle of the rear wheels in the front-rear direction of the vehicle.

Description

Technical Field

[0001] The present disclosure relates to a plug-in hybrid vehicle capable of being connected to an external power source to charge a battery. Background Art

[0002] Japanese Unexamined Patent Application Publication No. 2021-160519 discloses the following structure: In a hybrid vehicle configured with an engine and a drive motor as drive sources, a battery, high-voltage system components, and an exhaust system component are compactly arranged under the floor. Summary of the Invention

[0003] [Problems to be Solved by the Invention]

[0004] There is known a vehicle of a multi-purpose wagon type having a sliding seat that can slide on the floor in the front-rear direction of the vehicle as a second-row seat and having sliding doors. In order to sufficiently ensure the sliding amount of the sliding seat, a long slide rail needs to be provided on the floor. Therefore, in a vehicle of the multi-purpose wagon type, it is desirable that the floor behind the first-row seat is a lower and flat structure.

[0005] A plug-in hybrid vehicle capable of being connected to an external power source to charge a battery needs to have a larger battery than a hybrid vehicle not configured in this way.

[0006] Therefore, in a plug-in hybrid vehicle of the multi-purpose wagon type, it is necessary to study the arrangement of high-voltage system components that can achieve a lower and flat floor to ensure a spacious cabin space and can accommodate a large battery.

[0007] [Means for Solving the Problems]

[0008] One embodiment of the plug-in hybrid vehicle disclosed herein is a multi-purpose touring type plug-in hybrid vehicle in which the passenger compartment and the luggage compartment are not separated. The plug-in hybrid vehicle includes: a power source including an engine and an electric motor; a fuel tank configured to store fuel supplied to the engine; a battery configured to store electric power supplied to the electric motor; an on-vehicle charger configured to charge the battery with electric power supplied from the outside of the plug-in hybrid vehicle; a converter configured to convert the voltage of the electric power supplied from the battery; a power transmission mechanism configured to transmit the rotational power of the engine and the electric motor to the front wheels; an inverter configured to drive the electric motor; an exhaust pipe configured to guide the exhaust gas from the engine to the rear in the vehicle front-rear direction; a first row of seats provided on the floor constituting the floor surface of the passenger compartment; a second row of seats provided on the floor so as to be located rearward of the first row of seats in the vehicle front-rear direction; and a slide rail provided on the floor so as to extend in the vehicle front-rear direction. The engine, the electric motor, the power transmission mechanism, and the inverter are provided in the engine compartment. In the vehicle front-rear direction, the first row of seats is located rearward of the front wheels, and the second row of seats is located forward of the rear wheels. The second row of seats is configured to be slidable in the vehicle front-rear direction on the floor along the slide rail. The battery, the fuel tank, and the exhaust pipe are provided below the floor. The on-vehicle charger is provided on the floor so as to be located rearward of the axle of the rear wheels in the vehicle front-rear direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic view of a plug-in hybrid vehicle of the multi-purpose touring type according to the embodiment.

[0010] Figure 2 is a side view of a sliding door provided in the plug-in hybrid vehicle viewed from the left side Figure 1 of the plug-in hybrid vehicle.

[0011] Figure 3 is a side view of a sliding door provided in the plug-in hybrid vehicle viewed from the right side Figure 1 of the plug-in hybrid vehicle.

[0012] Figure 4 is a schematic view showing Figure 1 the internal structure of the plug-in hybrid vehicle.

[0013] Figure 5 is a schematic view showing Figure 1 the seat arrangement in the plug-in hybrid vehicle.

[0014] Figure 6 is a schematic diagram showing the configuration of the equipment arranged on the floor in a plug-in hybrid vehicle Figure 1 .

[0015] Figure 7 is a schematic diagram showing the configuration of the equipment arranged under the floor in a plug-in hybrid vehicle Figure 1 .

[0016] Figure 8 is a schematic diagram showing the structure of the drive system and the structure of the electrical system in a plug-in hybrid vehicle Figure 1 . DETAILED DESCRIPTION

[0017] Hereinafter, an embodiment of the plug-in hybrid vehicle 1 will be described with reference to Figures 1 to 8 . In the following description, terms related to orientation or direction such as "front", "rear", "upper", "lower", "right", and "left" are defined based on the plug-in hybrid vehicle 1.

[0018] <Regarding the external structure of the plug-in hybrid vehicle 1>

[0019] Figure 1 is a schematic diagram showing the plug-in hybrid vehicle 1 of the present embodiment. The plug-in hybrid vehicle 1 has a left side surface as one of the first side surface and the second side surface, and a right side surface as the other of the first side surface and the second side surface. As Figure 1 shown, the plug-in hybrid vehicle 1 is provided with a front door 2, an opening 3, and a sliding door 4 on the left side surface. The plug-in hybrid vehicle 1 is also provided with a front door 2, an opening 3, and a sliding door 4 on the right side surface in the same manner.

[0020] The opening 3 is opened and closed by the sliding door 4 that moves in the vehicle front-rear direction. A pedal 5 is provided below the opening 3. The pedal 5 is provided below the floor surface 100 that constitutes the floor of the plug-in hybrid vehicle 1. A guide rail 11 extending in the vehicle front-rear direction is fixed to the lower surface of the pedal 5. The front end of the guide rail 11 is located at a position rearward of the front wheel 14. The rear end of the guide rail 11 is located at a position forward of the rear wheel 15.

[0021] Figure 2 is a side view of the left sliding door 4 as viewed from the left side. As Figure 2As shown, a fuel supply port 17 is provided on the left side of the plug-in hybrid vehicle 1 and at a position rearward of the sliding door 4. An upper rail 7, a center rail 9, and a guide rail 11 are provided around the opening 3. The upper rail 7 is provided above the opening 3. The guide rail 11 is provided below the opening 3. The center rail 9 is provided on the side surface of the vehicle 1 at a position rearward of the 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.

[0022] The sliding door 4 includes a sliding door main 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 of the sliding door main body 6 in the vehicle length direction. The center hinge unit 10 is fixed near the rear end of the sliding door main body 6 in the vehicle length direction. The vehicle length direction is the same as the vehicle front-rear direction.

[0023] The upper hinge unit 8 is fixed to the upper end portion of the sliding door main body 6. The guide hinge unit 12 is fixed to the lower end portion of the sliding door main body 6. The center hinge unit 10 is fixed to the central portion of the sliding door main body 6 in the vertical direction.

[0024] The upper hinge unit 8 is supported by the upper rail 7 in a movable state. The center hinge unit 10 is supported by the center rail 9 in a movable state. The guide hinge unit 12 is supported by the guide rail 11 in a movable state. Thus, the upper hinge unit 8, the center hinge unit 10, and the guide hinge unit 12 connect the sliding door main body 6 to the side surface of the vehicle 1. The upper hinge unit 8 moves along the upper rail 7. The center hinge unit 10 moves along the center rail 9. The guide hinge unit 12 moves along the guide rail 11. Thus, the sliding door main body 6 moves relative to the side surface of the vehicle 1. That is, the upper rail 7, the center rail 9, and the guide rail 11 define the moving direction of the sliding door 4.

[0025] Figure 3 is a side view of the right sliding door 4 viewed from the right side. As Figure 3 shown, a charging cover 61 is provided on the right side of the plug-in hybrid vehicle 1 and at a position rearward of the sliding door 4. A first charging port 18 and a second charging port 19 described later are provided inside the charging cover 61.

[0026] <Regarding the internal structure of the plug-in hybrid vehicle 1>

[0027] Figure 4 is a side view schematically showing the internal structure of the plug-in hybrid vehicle 1. As Figure 4As shown, the plug-in hybrid vehicle 1 is a multi-functional wagon-type vehicle in which the passenger compartment 16 and the luggage compartment are not separated. The plug-in hybrid vehicle 1 has an engine compartment 20 in front of the passenger compartment 16. Inside the engine compartment 20, an engine 21, a first motor generator MG1, a second motor generator MG2, a power control unit 22, a power distribution mechanism 23, and a reduction mechanism 24 are provided as power sources.

[0028] A first row seat 30, a second row seat 31, and a third row seat 32 are provided on the floor 100. The second row seat 31 is located behind the first row seat 30. In a side view of the vehicle, the first row seat 30 is located behind the front wheel 14. In a side view of the vehicle, the second row seat 31 is located in front of the rear wheel 15.

[0029] As Figure 4 shown, a junction box 41 is provided at a position lower than the first row seat 30 and higher than the floor 100. The junction box 41 is a high-voltage system component. Details of the junction box 41 will be described later.

[0030] An on-vehicle charger 40 and a DC / DC converter 42 are provided at a position behind the axle of the rear wheel 15 and above the floor 100. Details of the on-vehicle charger 40 and the DC / DC converter 42 will be described later. The on-vehicle charger 40 and the DC / DC converter 42 are high-voltage system components.

[0031] 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 provided below the floor 100. The battery 50 is configured to store 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 is configured to store fuel supplied to the engine 21. The muffler 53 is configured to reduce exhaust noise.

[0032] The fuel tank 52 is provided behind the battery 50. The rear-wheel drive motor generator MGR is provided at a position behind the fuel tank 52. The muffler 53 is provided at a position behind the rear-wheel drive motor generator MGR.

[0033] Figure 5 is a top view schematically showing the seat arrangement. As Figure 5 shown, the first row seat 30 includes a driver's seat and a front passenger seat. The second row seat 31 has two independent seats. The third row seat 32 is located behind the second row seat 31.

[0034] <Regarding the equipment provided on the floor 100>

[0035] Figure 6is a top view schematically showing the configuration of the equipment disposed above the floor 100. As Figure 6 shown, an in-vehicle charger 40, a junction box 41, and a DC / DC converter 42 are disposed above the floor 100.

[0036] Four first slide rails 45 extending in the vehicle front-rear direction are disposed behind the junction box 41. Four second slide rails 46 extending in the vehicle front-rear direction are disposed behind the first slide rails 45. All of the first slide rails 45 are disposed on the floor 100. Two of the four second slide rails 46 at the center in the vehicle width direction are disposed on the floor 100. The remaining two second slide rails 46 are disposed on the side of the vehicle 1 within the passenger compartment 16.

[0037] As Figure 5 shown, the junction box 41 is disposed below the driver's seat. Accordingly, the height of the floor 100 also becomes the same height as the portion where the first slide rails 45 and the second slide rails 46 are disposed at the portion between the driver's seat and the front passenger seat.

[0038] The second row seat 31 is disposed on the first slide rails 45. The second row seat 31 is configured to be slidable in the vehicle front-rear direction along the first slide rails 45. The third row seat 32 is disposed on the second slide rails 46. The third row seat 32 is configured to be slidable in the vehicle front-rear direction along the second slide rails 46.

[0039] <Regarding the equipment disposed below the floor 100>

[0040] Figure 7 is a top view schematically showing the configuration of the equipment disposed below the floor 100. Figure 7 The configuration among the in-vehicle charger 40, the junction box 41, and the DC / DC converter 42 disposed above the floor 100 is schematically shown. The plug-in hybrid vehicle 1 is divided into a right region RA and a left region LA with the center line CL indicating the center in the vehicle width direction as a boundary.

[0041] The battery 50 is disposed so as to span both the right region RA and the left region LA. The battery 50 is disposed closer to the left side of the vehicle 1. The center of gravity position 51 of the battery 50 is located in the left region LA. That is, the battery 50 is disposed so as to be offset in the vehicle width direction with the center of gravity position 51 of the battery 50 being offset from the center line CL in the vehicle width direction.

[0042] The plug-in hybrid vehicle 1 has a guide rail 11 below the floor 100 that supports the sliding door 4 so as to be slidable. The guide rail 11 is provided to overlap a part of the battery 50 in the vehicle front-rear direction. The guide rail 11 has a bent portion 13 that extends forward in a manner bent inward in the vehicle width direction. When the sliding door 4 is closed, the sliding door 4 is introduced inward in the vehicle width direction along the bent portion 13 of the guide rail 11.

[0043] An exhaust pipe 54 is provided below the floor 100, and the exhaust pipe 54 is configured to guide the exhaust gas from the engine 21 rearward. The exhaust pipe 54 connects the engine 21 and the muffler 53. The exhaust pipe 54 is provided near the right side of the vehicle 1. The exhaust pipe 54 is provided in the right region RA. The exhaust pipe 54 is provided closer to the side opposite to the side where the battery 50 is closer in the vehicle width direction. The exhaust pipe 54 is provided between the battery 50 and the guide rail 11 in the vehicle width direction. The exhaust pipe 54 is bent outward in the vehicle width direction along the bent portion 13 of the guide rail 11.

[0044] The fuel tank 52 is provided behind the battery 50. The fuel tank 52 is connected to the fuel supply port 17 via a fuel supply pipe 62.

[0045] A fuel vapor recovery device 55 is provided behind the rear-wheel drive motor generator MGR and on the vehicle width direction side of the muffler 53. The fuel vapor recovery device 55 is a canister that adsorbs the fuel vapor gas generated inside the fuel tank 52.

[0046] The on-vehicle charger 40 is connected to the battery 50 via a wiring harness. The wiring harness connecting the on-vehicle charger 40 and the battery 50 is routed between the battery 50 and the exhaust pipe 54.

[0047] The junction box 41 is connected to the battery 50 via a wiring harness. The wiring harness connecting the junction box 41 and the battery 50 is routed between the battery 50 and the exhaust pipe 54.

[0048] The DC / DC converter 42 is connected to the junction box 41 via a wiring harness. The wiring harness connecting the DC / DC converter 42 and the junction box 41 is routed between the battery 50 and the exhaust pipe 54.

[0049] The junction box 41 is connected to the second charging port 19 via a wiring harness. The wiring harness connecting the junction box 41 and the second charging port 19 is routed between the battery 50 and the exhaust pipe 54.

[0050] The on-vehicle charger 40 is connected to the first charging port 18 via a wiring harness.

[0051] <Regarding the drive system of the plug-in hybrid vehicle 1>

[0052] Figure 8Schematically shows the structure of the drive system and the structure of the electrical system in the plug-in hybrid vehicle 1 according to an embodiment.

[0053] As Figure 8 shown, 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 mechanism 24. The rotational power of the second motor generator MG2 is transmitted to the front wheels 14 via the reduction mechanism 24 as a power transmission mechanism. That is, the second motor generator MG2 functions as a drive motor.

[0054] The engine 21 is connected to the front wheels 14 via the power distribution mechanism 23 and the reduction mechanism 24. The power distribution mechanism 23 is a power transmission mechanism like the reduction mechanism 24. That is, the rotational power of the engine 21 is transmitted to the front wheels 14 via the power transmission mechanism. The first motor generator MG1 is connected to the power distribution mechanism 23. The first motor generator MG1 is a three-phase AC type motor generator. The power distribution mechanism 23 is a planetary gear mechanism. The power distribution mechanism 23 can distribute the driving force among the engine 21, the first motor generator MG1, and the front wheels 14.

[0055] The first motor generator MG1 generates electricity by receiving the driving force of the engine 21 and / or the driving force from the front wheels 14. When starting the engine 21, the first motor generator MG1 functions as a starter for driving the output shaft, i.e., the crankshaft, of the engine 21. In this case, the first motor generator MG1 functions as a motor that generates a driving force according to the supply of electric power from the battery 50. That is, the first motor generator MG1 functions as a drive motor.

[0056] 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 charged to the battery 50. That is, the power control unit 22 functions as an inverter.

[0057] 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, the second motor generator MG2 generates electricity using the driving force from the front wheels 14. The power generated by the second motor generator MG2 is charged to 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 charged to the battery 50.

[0058] The motor generator MGR for rear-wheel drive is connected to the battery 50 via the power control unit 22. The motor generator MGR for rear-wheel drive is connected to the rear wheels 15 via the reduction gear 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 motor generator MGR for rear-wheel drive. The motor generator MGR for rear-wheel drive is a motor that drives the rear wheels 15 using the power supplied from the battery 50. That is, the motor generator MGR for rear-wheel drive functions as a drive motor.

[0059] When decelerating the plug-in hybrid vehicle 1, the motor generator MGR for rear-wheel drive generates electricity using the driving force from the rear wheels 15. The electricity generated by the motor generator MGR for rear-wheel drive is charged to the battery 50. In this case, the motor generator MGR for rear-wheel drive functions as a generator. The AC power generated by the motor generator MGR for rear-wheel drive is converted into DC power by the power control unit 22 and charged to the battery 50.

[0060] <Regarding the electrical system of the plug-in hybrid vehicle 1>

[0061] As Figure 8 shown, the plug-in hybrid vehicle 1 includes an on-vehicle charger 40, a junction box 41, and a DC / DC converter 42. Moreover, the plug-in hybrid vehicle 1 includes a first charging port 18 and a second charging port 19 as charging ports for inserting a charging plug from the outside of the vehicle 1. The first charging port 18 is for normal charging using an AC power source such as 100V or 200V. The second charging port 19 is for rapid charging using a DC high-voltage power source such as 50kW.

[0062] As Figure 8 shown, the on-vehicle charger 40 is connected to the battery 50 via a wiring harness. The junction box 41 is connected to the battery 50 via a wiring harness. The DC / DC converter 42 is connected to the junction box 41 via a wiring harness.

[0063] The on-vehicle charger 40 is connected to the first charging port 18 via a wiring harness. The on-vehicle charger 40 converts the AC power input from the AC power source connected to the first charging port 18 into DC power and outputs it, thereby charging the battery 50. That is, the plug-in hybrid vehicle 1 can use an AC power source as an external power source for charging the battery 50.

[0064] The junction box 41 has a function of branching the power of the battery 50 to a plurality of devices. For example, the DC power from the battery 50 is supplied to the DC / DC converter 42, the air conditioner 57, and the water heater 58 via the junction box 41.

[0065] The air conditioner 57 conditions the air in the passenger compartment 16 using the electric power supplied from the battery 50. The water heater 58 heats water using the electric power supplied from the battery 50 to make it warm water. The air conditioner 57 uses this warm water as a heat source.

[0066] The junction box 41 is connected to the second charging port 19 via a wiring 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 junction 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.

[0067] The DC / DC converter 42 steps down the voltage of the battery 50 and supplies it to a plurality of auxiliary machines. The auxiliary machines include an electric power steering device 59 and an electric oil pump 60 provided in the engine compartment 20. The electric power steering device 59 is a mechanism that assists the driver's steering wheel operation. The electric oil pump 60 is a mechanism that sucks lubricating oil and is used for lubricating the engine 21.

[0068] <Operation of this embodiment>

[0069] When the on-vehicle charger 40 is provided below the floor 100, the battery 50 that can be provided below the floor 100 becomes smaller, or a lower floor cannot be achieved. On the other hand, when the on-vehicle charger 40 is provided above the floor 100, a flat floor cannot be achieved due to the position where the on-vehicle charger 40 is provided.

[0070] In this embodiment, since the on-vehicle charger 40 is provided above the floor 100, the plug-in hybrid vehicle 1 can secure a space for mounting a large battery 50 below the floor 100 without raising the position of the floor 100. Moreover, since the on-vehicle charger 40 is provided at a position behind the axle of the rear wheels 15, the floor provided with the first slide rail 45 and the second slide rail 46 can be made flat up to the vicinity of the rear wheels 15. As a result, a long first slide rail 45 can be provided on the floor. Therefore, the sliding amount of the second row seat 31 can be sufficiently ensured.

[0071] <Effect of this embodiment>

[0072] (1) The above-described plug-in hybrid vehicle 1 can mount a large battery 50 and achieve a lower and flat floor to ensure a spacious passenger compartment space.

[0073] (2) In the plug-in hybrid vehicle 1, a DC / DC converter 42 is provided above the floor 100 and behind the axle of the rear wheels 15. When the DC / DC converter 42 is provided below the floor 100, the size of the battery 50 that can be provided below the floor 100 becomes smaller, or a lower floor cannot be achieved. In contrast, when the DC / DC converter 42 is provided above the floor 100, a flat floor cannot be achieved due to the position where the DC / DC converter 42 is provided. In the present embodiment, since the DC / DC converter 42 is arranged above the floor 100, a space for mounting a larger battery 50 can be ensured below the floor 100 without raising the position of the floor 100. Moreover, since the DC / DC converter 42 is provided at a position behind the axle of the rear wheels 15, the floor provided with the first slide rail 45 and the second slide rail 46 can be made flat up to the vicinity of the rear wheels 15. As a result, the long first slide rail 45 can be provided on the floor. Therefore, the above plug-in hybrid vehicle 1 can sufficiently ensure the sliding amount of the second row seat 31.

[0074] (3) In the plug-in hybrid vehicle 1, a DC / DC converter 42 is provided on the lateral side in the vehicle width direction of the on-vehicle charger 40. According to the above structure, compared with the case where the DC / DC converter 42 is provided in front of or behind the on-vehicle charger 40 in the vehicle length direction, the range where the floor is flat in the vehicle length direction becomes wider. The wider the range where the floor is flat in the vehicle length direction, the longer the first slide rail 45 that can be provided on the floor. Therefore, the above plug-in hybrid vehicle 1 can sufficiently ensure the sliding amount of the second row seat 31.

[0075] (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 the outside of the vehicle 1. The first charging port 18 and the second charging port 19 are provided on the side surface of the vehicle 1 on the side close to the on-vehicle charger 40 and at a position behind the sliding door 4. The on-vehicle charger 40 and the first charging port 18 are connected to each other by a wiring harness. In the above plug-in hybrid vehicle 1, since the first charging port 18 is provided on the side surface of the vehicle 1 on the side close to the on-vehicle charger 40, the wiring harness connecting the on-vehicle charger 40 and the first charging port 18 can be made short. The shorter the wiring harness, the smaller the weight of the wiring harness. That is, the weight of the vehicle is reduced. In addition, the shorter the wiring harness, the lower the power loss in the wiring harness. Therefore, the above plug-in hybrid vehicle 1 can reduce the weight of the vehicle and the power loss in the wiring harness.

[0076] (5) The plug-in hybrid vehicle 1 is equipped with a distribution box 41 that branches the electric power supplied from the battery 50. The distribution box 41 is provided below the first-row seat 30 and above the floor 100. When the distribution box 41 is provided below the floor 100, the battery 50 that can be provided below the floor 100 becomes smaller, or a lower floor cannot be achieved. On the other hand, when the distribution box 41 is provided above the floor 100, a flat floor cannot be achieved due to the position where the distribution box 41 is provided. In the present embodiment, since the distribution box 41 is provided above the floor 100, in the plug-in hybrid vehicle 1, a space for mounting a larger battery 50 can be ensured below the floor 100 without raising the position of the floor 100. Therefore, the plug-in hybrid vehicle 1 can achieve a lower and flat floor while mounting a larger battery 50, ensuring a spacious passenger compartment space. Moreover, since the distribution box 41 is provided below the first-row seat 30, the floor provided with the slide rails can be made flat up to near the rear wheels 15. As a result, a longer first slide rail 45 can be provided on the floor. Therefore, the sliding amount of the second-row seat 31 can be sufficiently ensured.

[0077] (6) The first-row seat 30 includes two seats, a right seat and a left seat. These two seats are the driver's seat and the front passenger seat. The distribution box 41 is provided below one of the two seats. The portion of the floor 100 between the two seats has the same height as the portion of the floor 100 provided with the slide rails. According to the above structure, the floor between the right seat and the left seat included in the first-row seat 30 becomes a flat floor connected to the floor behind the first-row seat 30. Therefore, the occupant can easily move inside the passenger compartment 16 through between the right seat and the left seat without getting out of the vehicle. That is, in the above plug-in hybrid vehicle 1, the occupant can move between the second-row seat 31 and the first-row seat 30 without getting out of the passenger compartment 16.

[0078] <Modification Example>

[0079] The present embodiment can be implemented with the following modifications. The present embodiment and the following modification examples can be implemented in combination with each other within a technically non-contradictory range.

[0080] · The DC / DC converter 42 may not be provided behind the axle of the rear wheels 15 and above the floor 100. For example, the DC / DC converter 42 may be provided below the first-row seat 30 and above the floor 100.

[0081] · The DC / DC converter 42 may not be provided on the side in the vehicle width direction of the in-vehicle charger 40. For example, in the vehicle length direction, the DC / DC converter 42 may be provided in front of the in-vehicle charger 40. For example, in the vehicle length direction, the DC / DC converter 42 may be provided behind the in-vehicle charger 40.

[0082] · The position of the first charging port 18 connected to the in-vehicle charger 40 is not limited to the side of the vehicle 1 closer to the in-vehicle charger 40 and at a position behind the sliding door 4. For example, the first charging port 18 may be arranged on the side of the vehicle 1 away from the in-vehicle charger 40.

[0083] · The plug-in hybrid vehicle 1 may not be equipped with the junction box 41. For example, when the battery 50 has a function of shunting current, the plug-in hybrid vehicle 1 may not be equipped with the junction box 41.

[0084] · The junction box 41 may be provided at a position other than under the right seat in the first row of seats 30. For example, the junction box 41 may be provided under the left seat in the first row of seats 30. For example, the junction box 41 may be provided between the right seat and the left seat in the first row of seats 30.

[0085] · The plug-in hybrid vehicle 1 may also be an autonomous vehicle. In this case, the plug-in hybrid vehicle 1 may not have 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. The junction box 41 is provided under the right seat. However, in this case, the junction box 41 may also be provided at a position other than under the right seat. For example, the junction box 41 may be provided under the left seat. For example, the junction box 41 may be provided between the right seat and the left seat.

Claims

1. A plug-in hybrid vehicle, which is a plug-in hybrid vehicle of a multi-functional touring vehicle type where the passenger compartment and the luggage compartment are not separated. Among them, the plug-in hybrid vehicle includes: an engine compartment, which is arranged in front of the passenger compartment in the front-rear direction of the vehicle; a power source, including an engine and an electric motor; a fuel tank, configured to store fuel supplied to the engine; a battery, configured to store electric power supplied to the electric motor; an on-vehicle charger, configured to charge the battery with electric power supplied from the outside of the plug-in hybrid vehicle; a converter, configured to convert the voltage of the electric power supplied from the battery; a power transmission mechanism, configured to transmit the rotational power of the engine and the electric motor to the front wheels; an inverter, configured to drive the electric motor; an exhaust pipe, configured to guide the exhaust gas from the engine to the rear in the front-rear direction of the vehicle; a first row of seats, arranged on the floor constituting the floor surface of the passenger compartment; a second row of seats, arranged on the floor in a position behind the first row of seats in the front-rear direction of the vehicle; and a slide rail, arranged on the floor extending in the front-rear direction of the vehicle, the engine, the electric motor, the power transmission mechanism, and the inverter are arranged in the engine compartment, in the front-rear direction of the vehicle, the first row of seats is located behind the front wheels, and the second row of seats is located in front of the rear wheels, the second row of seats is configured to be able to slide on the floor along the slide rail in the front-rear direction of the vehicle, the battery, the fuel tank, and the exhaust pipe are arranged below the floor, the on-vehicle charger is arranged on the floor in a position behind the axle of the rear wheels in the front-rear direction of the vehicle.

2. The plug-in hybrid vehicle according to claim 1, wherein, the converter is arranged on the floor in a position behind the axle of the rear wheels in the front-rear direction of the vehicle.

3. The plug-in hybrid vehicle according to claim 2, wherein, the converter is arranged on the side of the on-vehicle charger in the vehicle width direction.

4. The plug-in hybrid vehicle according to claim 1, wherein, the plug-in hybrid vehicle further includes: a sliding door, arranged on at least the first side among the first side and the second side of the plug-in hybrid vehicle; and a charging port, configured to allow a charging plug to be inserted from the outside of the plug-in hybrid vehicle, the first side is the side closer to the on-vehicle charger than the second side, the charging port is arranged on the first side in a position behind the sliding door in the front-rear direction of the vehicle, the on-vehicle charger and the charging port are connected to each other by a wire harness.

5. The plug-in hybrid vehicle according to claim 1, wherein, the plug-in hybrid vehicle further includes a distribution box, and the distribution box is configured to branch the electric power supplied from the battery. The distribution box is disposed below the first row of seats and above the floor.

6. The plug-in hybrid vehicle according to claim 5, wherein the first row of seats includes two seats, a right seat and a left seat, the distribution box is disposed below one of the two seats, the height of the portion of the floor between the two seats is the same as the height of the portion of the floor where the slide rail is provided.

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