Plug-in hybrid vehicle

Abstract

To facilitate securing mounting space for a battery and a high-voltage electric unit in a plug-in hybrid vehicle. [Solution] In a pickup truck-type PHEV (10) having a cabin section (11) with a passenger compartment (14), an engine compartment section (12) having an engine compartment (17) in which an engine (20) is arranged longitudinally, and a luggage section (13) having a cargo bed (18) that opens to the upper side (UP) of the vehicle, a first battery (40) is arranged in the cabin section (11) in a portion of the vehicle upper side (UP) above the propeller shaft (25), exhaust pipe, fuel tank and side members (31), and a first high-voltage electrical unit (42) is arranged adjacent to the first battery (40).

Description

[Technical Field]

[0001] The present invention relates to a pickup truck-type plug-in hybrid vehicle. [Background technology]

[0002] Patent Document 1 discloses a plug-in hybrid vehicle (hereinafter referred to as PHEV) having a monocoque body structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2008 / 082012 Summary of the Invention [Problem to be solved by the invention]

[0004] A PHEV is equipped with a large-capacity battery in addition to two drive sources, an engine and a motor. The PHEV also has a high-voltage electrical unit electrically connected to the battery. Examples of high-voltage electrical units include a motor power control unit and an on-board charging unit. In the case of the PHEV described in Patent Document 1, the battery is installed under the rear seat.

[0005] On the other hand, there is a type of vehicle called a pickup truck, which has a cargo bed that opens upward and is located behind the cabin. Most pickup trucks have a frame-type body. Numerous components, such as a transmission, propeller shaft, exhaust pipe, and fuel tank, are located under the floor of the pickup truck. Therefore, when converting a pickup truck into a PHEV, it may be necessary to raise the floor to provide sufficient space for a battery and a high-voltage electrical unit. However, users demand a cabin and cargo bed that can accommodate large amounts of luggage for pickup truck-type vehicles. Raising the vehicle floor to accommodate a battery and a high-voltage electrical unit under the floor reduces the volume of the cabin and cargo bed, failing to meet user demands. The present invention provides sufficient space for a battery and a high-voltage electrical unit in a pickup truck-type PHEV. [Means for solving the problem]

[0006] A plug-in hybrid vehicle that solves the above-mentioned problems is a pickup truck-type plug-in hybrid vehicle that includes a fuel tank, an engine, a battery, a motor, a transmission, a propeller shaft that is connected to the engine via the motor and the transmission and transmits the rotational power of the engine and the motor to the rear wheels, an exhaust pipe that directs the exhaust of the engine to the rear of the vehicle, a high-voltage electrical unit electrically connected to the battery, a cabin section in which a passenger compartment is provided, an engine compartment section located in front of the cabin section, a luggage section located behind the cabin section, and a frame having left and right side members that extend in the fore-and-aft direction of the vehicle through a portion of the cabin section below the passenger compartment. The plug-in hybrid vehicle is configured such that the engine compartment has an engine compartment in which the engine is arranged longitudinally, the luggage section has a loading platform that opens to the top of the vehicle, the propeller shaft and the exhaust pipe extend in the fore-and-aft direction of the vehicle through a portion of the cabin section that is lower than the passenger compartment, the battery is positioned in a portion of the vehicle higher than the propeller shaft, the exhaust pipe, and the side members in at least one of the cabin section and the luggage section, and the high-voltage electrical unit is positioned adjacent to the battery. [Effects of the Invention]

[0007] The plug-in hybrid vehicle has the advantage of making it easy to secure a space for mounting the battery and the high-voltage electric unit. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing the arrangement of components of a plug-in hybrid vehicle according to an embodiment, as viewed from the side. [Figure 2] 2 is a diagram showing the arrangement of seats in the plug-in hybrid vehicle of the embodiment as viewed from above. FIG. [Figure 3] 2 is a diagram showing the arrangement of the drive system, frame, exhaust pipe, fuel tank, etc., of the plug-in hybrid vehicle of the embodiment as seen from above. FIG. [Figure 4] 2 is a diagram showing the arrangement of a battery and a high-voltage electric unit as viewed from above in the plug-in hybrid vehicle of the embodiment; FIG. [Figure 5] FIG. 5 is a diagram showing a cross-sectional structure of the battery and its surroundings taken along line 5-5 in FIGS. 1 to 4. [Figure 6] FIG. 2 is a diagram showing an example of the location of a high-voltage electric unit, as viewed from the side of a PHEV. [Figure 7] FIG. 7 is a diagram showing a cross-sectional structure taken along line 7-7 in FIG. [Figure 8] FIG. 8 is a diagram showing a cross-sectional structure taken along line 8-8 in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of a plug-in hybrid vehicle will be described in detail below with reference to Figures 1 to 5. In the following description, the "plug-in hybrid vehicle" will be abbreviated as "PHEV." Among the arrows shown in each figure, "FR" indicates the front of the vehicle, "RR" indicates the rear of the vehicle, "UP" indicates the top of the vehicle, "DW" indicates the bottom of the vehicle, "LF" indicates the left side of the vehicle, and "RF" indicates the right side of the vehicle.

[0010] As shown in FIG. 1, the PHEV 10 has three sections: a cabin section 11, an engine compartment 12 located at the vehicle front (FR) of the cabin section 11, and a luggage section 13 located at the vehicle rear (RR) of the cabin section 11. The cabin section 11 is provided with a passenger compartment 14 where occupants board. The engine compartment 12 has an engine bay 17 in which an engine 20 is arranged longitudinally. The PHEV 10 of this embodiment is equipped with the engine 20 having a V-shaped cylinder arrangement. The luggage section 13 has a loading platform 18 that opens upward (UP) of the vehicle. In FIGS. 1 to 4, the portion of the PHEV 10 that is rearward (RR) of the vehicle from dotted line L1 and forward (FR) of dotted line L2 is the cabin section 11. The portion of the PHEV 10 that is forward (FR) of the vehicle from dotted line L1 is the engine compartment 12. The portion of the PHEV 10 that is rearward (RR) of the vehicle from dotted line L2 is the luggage section 13.

[0011] Figure 2 shows the seat arrangement of the PHEV 10. In the passenger compartment 14 of the PHEV 10, a front row seat 15 and a rear row seat 16 located further rearward RR of the vehicle than the front row seat 15 are installed. Note that the portion P0 shown by hatching in Figure 2 indicates the portion in the vehicle front FR of the rear row seat 16 in the passenger compartment 14. This portion P0 is a portion where it is assumed that the feet of the occupants, etc. are placed on the floor surface of the passenger compartment 14.

[0012] <Configuration of the drive system of the PHEV> Next, referring to Figure 3, the configuration of the drive system of the PHEV 10 will be described. The drive system of the PHEV 10 includes an engine 20, a transmission 21, a motor 22, and a transfer 23. Also, the drive system of the PHEV 10 includes propeller shafts 24 and 25 for the front and rear wheels. Both propeller shafts 24 and 25 are respectively connected to the engine 20 via the transfer 23, the motor 22, and the transmission 21. Also, the front-wheel propeller shaft 24 is connected to the left and right front wheels 27 via a differential 26, and the rear-wheel propeller shaft 25 is connected to the left and right rear wheels 29 via a differential 28.

[0013] <Configuration of the underfloor structure of the PHEV> Next, referring to Figure 3, the configuration of the underfloor structure of the PHEV 10 will be described. The underfloor of the PHEV 10 represents the portion below the vehicle DW of the floor panels of the passenger compartment 14 and the cargo bed 18.

[0014] A frame 30 is provided under the passenger compartment 14 and the cargo bed 18 of the PHEV 10. The frame 30 of the PHEV 10 in the present embodiment is a ladder-type frame having left and right side members 31 and a plurality of cross members 32 connecting the both side members 31. The left and right side members 31 are respectively arranged so as to extend in the vehicle longitudinal direction through the portion below the vehicle DW of the passenger compartment 14 in the cab portion 11. As shown in Figure 3, the rear-wheel propeller shaft 25 extends in the vehicle longitudinal direction through the portion below the vehicle DW of the passenger compartment 14 in the cab portion 11.

[0015] An exhaust pipe 33 that guides exhaust from the engine 20 to the rear of the vehicle RR is also disposed under the floor of the PHEV 10. The exhaust pipe 33 extends in the longitudinal direction of the vehicle, passing through a portion of the cabin 11 that is lower in the DW direction than the passenger compartment 14. A muffler 34 is disposed midway along the exhaust pipe 33. The muffler 34 is disposed in a portion of the cabin 11 that is lower in the DW direction than the passenger compartment 14. A fuel tank 35 that stores fuel for the engine 20 is also disposed under the floor of the PHEV 10. A propeller shaft 25 for the rear wheels is disposed in a portion between the exhaust pipe 33 and the fuel tank 35 in the vehicle width direction.

[0016] <Battery and high-voltage electrical unit placement> Next, the arrangement of the battery and high-voltage electric unit of the PHEV 10 will be described with reference to Figures 4 and 5. Figure 4 shows the arrangement of the battery and high-voltage electric unit in the PHEV 10 as seen from above the vehicle UP. Figure 5 shows a schematic cross-sectional structure of the PHEV 10 taken along line 5-5 shown in Figures 1 to 4.

[0017] The PHEV 10 has two batteries: a first battery 40 and a second battery 41. Each of the first battery 40 and the second battery 41 has a plurality of cells and a case that houses the cells. The first battery 40 is installed in the cabin section 11, below the rear row seats 16 on the vehicle DW side and above the rear wheel propeller shaft 25, exhaust pipe 33, fuel tank 35, and side members 31 on the vehicle UP side. The second battery 41 is installed in the luggage section 13, above the rear wheel propeller shaft 25, exhaust pipe 33, fuel tank 35, and side members 31 on the vehicle UP side.

[0018] The PHEV 10 further includes a high-voltage electric unit 42 electrically connected to the first battery 40 and the second battery 41. The high-voltage electric unit 42 is directly and electrically connected to the batteries and converts the electric power input and output from the batteries. The high-voltage electric unit 42 includes an electric circuit for power conversion and a case that houses the electric circuit. Examples of the high-voltage electric unit 42 include a power control unit that controls the power of the motor 22, and an on-board charging unit that converts electric power supplied from outside the vehicle and supplies it to the first battery 40 and the second battery 41. The high-voltage electric unit 42 may be configured to have the functions of both the power control unit and the on-board charging unit.

[0019] The high-voltage electric unit 42 is disposed adjacent to the first battery 40. Specifically, as shown in FIG. 1 , the high-voltage electric unit 42 is installed in a portion of the cabin 11 rearward of the rear row seats 16, in contact with a surface of the first battery 40 facing upward. In this case, the first battery 40 and the high-voltage electric unit 42 are disposed so as to overlap each other in the longitudinal direction and the width direction of the vehicle. The high-voltage electric unit 42 is mechanically coupled to the first battery 40 by bolts or the like. Furthermore, as shown in FIG. 1 , the first battery 40 and the high-voltage electric unit 42 are electrically connected via a bus bar 43. In the PHEV 10 of this embodiment, the first battery 40 corresponds to the battery adjacent to which the high-voltage electric unit 42 is disposed.

[0020] <Actions and Effects of the Embodiment> The operation and effects of this embodiment will be described. In addition to the frame 30, the propeller shaft 25, the exhaust pipe 33, the fuel tank 35, and the like are installed under the floor of the PHEV 10. Therefore, it is difficult to secure sufficient space under the floor of the PHEV 10 to install the battery and the high-voltage electric unit 42. Therefore, in the PHEV 10 of this embodiment, the first battery 40, the second battery 41, and the high-voltage electric unit 42 are arranged in the cabin section 11 and the luggage section 13 above the vehicle relative to the propeller shaft 25, the exhaust pipe 33, the fuel tank 35, and the side members 31 of the frame 30. However, in this case, the installation space of the vehicle interior and the loading platform 18 is reduced by the installation space for the first battery 40, the second battery 41, and the high-voltage electric unit 42. In contrast, in the PHEV 10 of this embodiment, the high-voltage electric unit 42 is arranged adjacent to the first battery 40 in the vehicle interior 14 of the cabin section 11. In the PHEV 10 of this embodiment, the first battery 40 and the high-voltage electric unit 42 are arranged together in one location, which allows for a larger cabin space than when the high-voltage electric unit 42 and the first battery 40 are arranged in separate locations within the passenger compartment 14.

[0021] According to the PHEV 10 of the present embodiment described above, the following effects can be achieved. (1) In the PHEV 10 of this embodiment, the first battery 40 and the high-voltage electric unit 42 are disposed adjacent to each other in a portion of the cabin 11 that is higher up the vehicle than the propeller shaft 25, the exhaust pipe 33, the fuel tank 35, and the side members 31. Therefore, the PHEV 10 of this embodiment has the advantage of easily securing the mounting space for the first battery 40 and the high-voltage electric unit 42.

[0022] (2) If the first battery 40 and the like are disposed in a portion of the cabin portion 11 that is higher up the vehicle than the side members 31 and the like, the floor of the passenger compartment 14 in that portion will be one step higher than the floor of the rest of the passenger compartment 14. If the floor of the portion P0 in the passenger compartment 14 that is forward of the rear row seats 16 is higher, the occupant comfort may be impaired. In this regard, in the PHEV 10 of this embodiment, the first battery 40, the second battery 41, and the high-voltage electric unit 42 are disposed in a portion other than the portion forward of the rear row seats 16 in the front of the vehicle. Therefore, deterioration of comfort due to the installation of the first battery 40 and the high-voltage electric unit 42 is suppressed.

[0023] (3) If a single battery having the combined battery capacity of the first battery 40 and the second battery 41 were placed in the cabin 11, the vehicle interior space would be significantly reduced, and if it were placed in the luggage compartment 13, the loading space of the cargo bed 18 would be significantly reduced. In contrast, in the case of the PHEV 10 of this embodiment, the batteries are separately placed, with the first battery 40 placed in the cabin 11 and the second battery 41 placed in the luggage compartment 13. Therefore, it is easier to ensure both the vehicle interior space and the loading space of the cargo bed 18 by installing the batteries than when a single battery is installed.

[0024] (4) In the PHEV 10 of this embodiment, the high-voltage electric unit 42 is disposed adjacent to the first battery 40 disposed in the cabin 11. In-vehicle electrical equipment electrically connected to the high-voltage electric unit 42 is often disposed in the cabin 11 and the engine compartment 12. Therefore, the length of the wiring connecting the high-voltage electric unit 42 to the in-vehicle electrical equipment can be shortened in some cases compared to when the high-voltage electric unit 42 is disposed adjacent to the second battery 41 disposed in the luggage compartment 13. For example, if the high-voltage electric unit 42 functions as a power control unit that controls the power of the motor 22, the power lines of the motor 22 can be shortened.

[0025] (5) The first battery 40 and the high-voltage electric unit 42 are mechanically connected to each other with bolts or the like. Even if the position of the first battery 40 is displaced by an external force due to a collision or the like, the high-voltage electric unit 42 is likely to move together with the first battery 40. Therefore, even during a collision or the like, the electrical connection between the first battery 40 and the high-voltage electric unit 42 is unlikely to be interrupted. Furthermore, damage to the wiring connecting the first battery 40 and the high-voltage electric unit 42 during a collision or the like can be suppressed.

[0026] (6) The first battery 40 and the high-voltage electric unit 42 are electrically connected by the bus bar 43. Since the structure for electrically connecting the first battery 40 and the high-voltage electric unit 42 is not exposed to the outside, resistance to leakage current is higher than when the first battery 40 and the high-voltage electric unit 42 are connected by a wire harness or the like.

[0027] (7) The high-voltage electric unit 42 is disposed above the first battery 40. This reduces the risk of the high-voltage electric unit 42 becoming wet when the PHEV 10 is submerged. In addition, the high-voltage electric unit 42 is less likely to interfere with the road surface when the PHEV 10 is traveling on an uneven road.

[0028] (Other Examples) The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0029] <Location of high-voltage electrical units> The high-voltage electric unit 42 may be disposed at a position different from that in the above embodiment, provided that it is disposed adjacent to either the first battery 40 or the second battery 41.

[0030] Regions P1 to P8 shown in FIGS. 6 to 8 respectively indicate examples of installation locations for the high-voltage electric unit 42. The cross-sectional view of FIG. 7 corresponds to a cross-section of the PHEV 10 taken along line 7-7 in FIG. 6. The cross-sectional view of FIG. 8 corresponds to a cross-section of the PHEV 10 taken along line 8-8 in FIG. 6. Region P1 indicates the installation location for the high-voltage electric unit 42 when it is disposed above the first battery 40 (UP) as in the above embodiment. Region P2 indicates the installation location for the high-voltage electric unit 42 when it is disposed below the first battery 40 (DW). Region P3 indicates the installation location for the high-voltage electric unit 42 when it is disposed above the second battery 41 (UP) and region P4 indicates the installation location for the high-voltage electric unit 42 when it is disposed below the second battery 41 (DW). Region P5 indicates the installation location for the high-voltage electric unit 42 when it is disposed on the right side RF of the first battery 40, and region P6 indicates the installation location for the high-voltage electric unit 42 when it is disposed on the left side LF of the first battery 40. Location P7 indicates the installation location of the high voltage electric unit 42 when the second battery 41 is disposed on the right side RF of the vehicle, and location P8 indicates the installation location of the high voltage electric unit 42 when the second battery 41 is disposed on the left side LF of the vehicle.

[0031] Furthermore, the high-voltage electric unit 42 may be disposed at a location other than the above-described locations P1 to P8, so long as it is adjacent to either the first battery 40 or the second battery 41. In any case, if the high-voltage electric unit 42 is disposed adjacent to either the first battery 40 or the second battery 41, the space required for its installation can be reduced compared to disposing them at a distant location. The high-voltage electric unit 42 is desirably disposed so as to satisfy one or two of the following conditions (X) to (Z). Condition (X) is that the high-voltage electric unit 42 is disposed so as to overlap the adjacent battery in the vehicle longitudinal direction. Condition (Y) is that the high-voltage electric unit 42 is disposed so as to overlap the adjacent battery in the vehicle width direction. Condition (Z) is that the high-voltage electric unit 42 is disposed so as to overlap the adjacent battery in the vehicle height direction. Note that the above-described locations (A) to (D) are locations that satisfy conditions (X) and (Y). Locations (E) to (H) are locations that satisfy conditions (X) and (Z).

[0032] <Fuel tank placement> The shape and position of the fuel tank 35 may be changed as appropriate. In a layout where the fuel tank 35 is not located in the vehicle lower DW portion of the first battery 40, the first battery 40 may be located in the cabin portion 11 above the vehicle UP with respect to the rear wheel propeller shaft 25, the exhaust pipe 33, and the side members 31.

[0033] In the PHEV 10 of the above embodiment, the exhaust pipe 33 and the fuel tank 35 are arranged to sandwich the rear-wheel propeller shaft 25 in the vehicle width direction. However, both the exhaust pipe 33 and the fuel tank 35 may be located on the right side RF of the rear-wheel propeller shaft 25. Alternatively, both the exhaust pipe 33 and the fuel tank 35 may be located on the right side RF of the rear-wheel propeller shaft 25.

[0034] <Battery placement> As described above, the location of the high-voltage electric unit 42 can be changed as long as it is adjacent to either the first battery 40 or the second battery 41. When the high-voltage electric unit 42 is placed adjacent to the first battery 40, the location of the second battery 41 in the luggage section 13 can be changed as desired. Furthermore, when the high-voltage electric unit 42 is placed adjacent to the first battery 40, the location of the first battery 40 in the cabin section 11 can also be changed as desired.

[0035] Even when the high-voltage electric unit 42 is disposed adjacent to the first battery 40, the location of the first battery 40 in the cabin portion 11 may be changed as long as the following requirement is met: the first battery 40 must be disposed in a portion of the cabin portion 11 that is higher up the vehicle than the rear wheel propeller shaft 25 and the side members 31. If this requirement is met, the first battery 40 may be disposed, for example, in a portion P0 of the cabin portion 11 that is further forward in the vehicle than the rear row seats 16.

[0036] Even when the high-voltage electric unit 42 is disposed adjacent to the second battery 41, the location of the second battery 41 in the luggage area 13 may be changed as long as the following requirement is met: the second battery 41 must be disposed in a position in the luggage area 13 that is higher up on the vehicle than the rear wheel propeller shaft 25 and the side members 31.

[0037] In the above embodiment, the battery of the PHEV 10 is divided into the first battery 40 installed in the cabin 11 and the second battery 41 installed in the luggage compartment 13. However, the PHEV 10 may be configured to include a single battery in either the cabin 11 or the luggage compartment 13.

[0038] <Other> The battery and the high-voltage electric unit 42 may not be mechanically connected.

[0039] The battery and the high-voltage electric unit 42 may be electrically connected using a member other than the bus bar 43, for example, a wire harness. The PHEV 10 may be equipped with an engine 20 having a cylinder arrangement other than a V-type.

[0040] (Additional notes) [Appendix 1] A pickup truck type plug-in hybrid vehicle, comprising: a fuel tank; an engine; a battery; a motor; a transmission; a propeller shaft connected to the engine via the motor and the transmission and transmitting rotational power of the engine and the motor to rear wheels; an exhaust pipe directing exhaust from the engine to the rear of the vehicle; a high-voltage electrical unit electrically connected to the battery; a cabin section provided with a passenger compartment; an engine compartment section located in front of the cabin section; a luggage section located behind the cabin section; and a luggage compartment extending in the longitudinal direction of the vehicle through a portion of the cabin section below the passenger compartment. and a frame having left and right side members extending from the engine compartment, the engine compartment having the engine disposed longitudinally, the luggage compartment having a loading platform that opens upward toward the vehicle, the propeller shaft and the exhaust pipe extending in the longitudinal direction of the vehicle through a portion of the cabin section that is lower than the passenger compartment, the battery being disposed in a portion of at least one of the cabin section and the luggage section that is higher than the propeller shaft, the exhaust pipe, and the side members, and the high-voltage electrical unit being disposed adjacent to the battery.

[0041] [Appendix 2] A plug-in hybrid vehicle as described in Appendix 1, in which the passenger compartment is equipped with a front row of seats and a rear row of seats located rearward of the front row of seats, and the battery is located in a portion of the plug-in hybrid vehicle other than the portion forward of the rear row of seats.

[0042] [Appendix 3] A plug-in hybrid vehicle as described in Appendix 1, in which the passenger compartment is equipped with a front row of seats and a rear row of seats located rearward of the front row of seats, and the battery is located in the cabin below the rear row of seats.

[0043] [Appendix 4] The plug-in hybrid vehicle according to Appendix 1, wherein the battery is installed in the luggage area. [Appendix 5] The passenger compartment is equipped with front seats and rear seats located rearward of the front seats, and the plug-in hybrid vehicle has a first battery located in the cabin area below the rear seats and above the propeller shaft, the exhaust pipe, and the side members, and a second battery located in the luggage area above the propeller shaft, the exhaust pipe, and the side members, and which of the first battery and the second battery is the battery adjacent to which the high-voltage electrical unit is located.

[0044] [Supplementary Note 6] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 5, wherein the high-voltage electric unit is disposed above the battery in the vehicle. [Supplementary Note 7] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 6, wherein the fuel tank is disposed below the battery.

[0045] [Supplementary Note 8] The plug-in hybrid vehicle according to any one of Supplementary Notes 1 to 7, wherein the battery and the high-voltage electric unit are mechanically coupled to each other. [Supplementary Note 9] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 8, wherein the battery and the high-voltage electric unit are electrically connected by a bus bar.

[0046] [Supplementary Note 10] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 9, wherein the high-voltage electric unit is a power control unit that controls the power of the motor. [Supplementary Note 11] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 10, wherein the high-voltage electric unit is an on-board charging unit that converts electric power supplied from outside the vehicle and supplies the converted electric power to the battery.

[0047] [Supplementary Note 12] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 11, wherein the propeller shaft is disposed in a portion between the exhaust pipe and the fuel tank in the vehicle width direction.

[0048] [Appendix 13] The plug-in hybrid vehicle according to any one of Appendices 1 to 12, wherein the engine has a V-type cylinder arrangement. [Appendix 14] The plug-in hybrid vehicle according to any one of Appendices 1 to 13, wherein the battery and the high-voltage electric unit are arranged to overlap each other in the longitudinal direction of the vehicle.

[0049] [Supplementary Note 15] The plug-in hybrid vehicle according to any one of Supplementary Note 1 to Supplementary Note 14, wherein the battery and the high-voltage electric unit are arranged to overlap each other in the vehicle width direction. [Appendix 16] The plug-in hybrid vehicle according to any one of appendices 1 to 15, wherein the battery and the high-voltage electric unit are arranged to overlap in the vehicle height direction. [Explanation of symbols]

[0050] 10 PHEV 11 Cabin section 12 Engine compartment 13 Luggage section 14 Cabin 15 Front row seats 16 rear row seats 17 Engine Room 18 Cargo bed 20 Engine 21 Transmission 22 Motor 23 Transfer 24 Propeller shaft for front wheel 25 Rear wheel propeller shaft 26, 28 differential 27 Front wheel 29 rear wheel 30 frames 31 Side member 32 Cross member 33 Exhaust pipe 34 Muffler 35 Fuel Tank 40 First Battery 41 Second Battery 42 High-voltage electrical unit 43 Busbar

Claims

1. A pickup truck-type plug-in hybrid vehicle, a fuel tank, an engine, a battery, a motor, a transmission, a propeller shaft connected to the engine via the motor and the transmission to transmit rotational power of the engine and the motor to rear wheels, and an exhaust pipe that guides exhaust from the engine to the rear of the vehicle; the vehicle comprises a high-voltage electric unit electrically connected to the battery, a cabin section in which a passenger compartment is provided, an engine compartment section located in front of the cabin section, a luggage section located in the rear of the cabin section, and a frame having left and right side members extending in the longitudinal direction of the vehicle through a portion of the cabin section below the passenger compartment, the engine compartment has an engine compartment in which the engine is disposed longitudinally, The luggage section has a loading platform that opens upward toward the vehicle, the propeller shaft and the exhaust pipe extend in the front-rear direction of the vehicle through a portion of the cabin section that is lower than the vehicle interior, the battery is disposed in a portion of at least one of the cabin portion and the luggage portion that is higher than the propeller shaft, the exhaust pipe, and the side members; The high-voltage electric unit is disposed adjacent to the battery. Plug-in hybrid vehicle.

2. The vehicle compartment is provided with a front row seat and a rear row seat located rearward of the front row seat, The battery is disposed in a portion of the plug-in hybrid vehicle other than a portion forward of the rear row seats. The plug-in hybrid vehicle according to claim 1 .

3. The vehicle compartment is provided with a front row seat and a rear row seat located rearward of the front row seat, The battery is disposed in the cabin below the rear seat. The plug-in hybrid vehicle according to claim 1 .

4. The plug-in hybrid vehicle according to claim 1 , wherein the battery is installed in the luggage compartment.

5. The vehicle compartment is provided with a front row seat and a rear row seat located rearward of the front row seat, The plug-in hybrid vehicle includes a first battery disposed in the cabin section below the rear row seats and above the propeller shaft, the exhaust pipe, and the side members, and a second battery disposed in the luggage section above the propeller shaft, the exhaust pipe, and the side members, Which of the first battery and the second battery is the battery adjacent to which the high-voltage electric unit is disposed? The plug-in hybrid vehicle according to claim 1 .

6. 2. The plug-in hybrid vehicle according to claim 1, wherein the high-voltage electric unit is disposed above the battery.

7. The plug-in hybrid vehicle according to claim 1 , wherein the fuel tank is disposed below the battery.

8. 2. The plug-in hybrid vehicle according to claim 1, wherein the battery and the high-voltage electric unit are mechanically coupled to each other.

9. The plug-in hybrid vehicle according to claim 1, wherein the battery and the high-voltage electric unit are electrically connected by a bus bar.

10. 2. The plug-in hybrid vehicle according to claim 1, wherein the high-voltage electric unit is a power control unit that controls the power of the motor.

11. 2. The plug-in hybrid vehicle according to claim 1, wherein the high-voltage electric unit is an on-board charging unit that converts electric power supplied from outside the vehicle and supplies the converted electric power to the battery.

12. 2. The plug-in hybrid vehicle according to claim 1, wherein the propeller shaft is disposed in a portion between the exhaust pipe and the fuel tank in the vehicle width direction.

13. 2. The plug-in hybrid vehicle according to claim 1, wherein the engine has a V-type cylinder arrangement.

Images