Electric vehicle

Abstract

To provide an electric vehicle capable of achieving a design with a low vehicle height.SOLUTION: In the electric vehicle 10, a first row seat 17 and a second row seat 18 located on the vehicle rear side of the first row seat 17 are disposed on a floor 16. In the electric vehicle 10, a battery 15 is disposed under a floor 16. In the electric vehicle 10, the second electromechanical integrated unit 14 is disposed on the vehicle rear side of the battery 15. The electric vehicle 10 includes in-vehicle chargers 20, a battery ECU21, and a branch box 22 as battery-related devices. In the electric vehicle 10, a battery ECU21 and a branch box 22 are disposed below the second row seat 18 and above the battery 15. In the electric vehicle 10, the in-vehicle charger 20 is disposed above the second electromechanical integrated unit 14.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an electric vehicle. [Background technology]

[0002] Patent Document 1 discloses an electric vehicle in which a battery is disposed under the floor of the vehicle interior. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-158688 Summary of the Invention [Problem to be solved by the invention]

[0004] The vehicle undercarriage structure in Patent Document 1 does not disclose any configuration related to battery charging or battery-related equipment that distributes power supplied from the battery. In an electric vehicle in which the battery is disposed under the floor, there is room for improvement in the location of the battery-related equipment. [Means for solving the problem]

[0005] An electric vehicle that solves the above problems drives drive wheels using power stored in a battery. The electric vehicle includes a first motor and a second motor as motors that are power sources for driving the drive wheels. The electric vehicle includes the battery that stores power to be supplied to the first motor and the second motor. The electric vehicle includes a first power control device that supplies power to the first motor and a second power control device that supplies power to the second motor. The electric vehicle includes a first mechanical and electrical integrated unit consisting of the first motor and the first power control device. The electric vehicle includes a second mechanical and electrical integrated unit consisting of the second motor and the second power control device. The electric vehicle includes a plurality of battery-related devices. The battery is disposed under the floor and between the front wheels and rear wheels, the first mechanical and electrical integrated unit is disposed further forward of the battery, and the second mechanical and electrical integrated unit is disposed further rearward of the battery. A first row of seats and a second row of seats located rearward of the first row of seats are arranged on the floor of the electric vehicle. The battery-related devices are arranged below the second row of seats and above the battery, and above the second mechanically and electrically integrated unit. [Effects of the Invention]

[0006] The electric vehicle described above can be designed with a low vehicle height. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of an electrical system and a drive system in an electric vehicle according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing the arrangement of devices in the electric vehicle of the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the electric vehicle taken along line 3-3 in FIG. [Figure 4] FIG. 4 is a cross-sectional view of the electric vehicle taken along line 4-4 in FIG. [Figure 5] FIG. 5 is a schematic diagram showing the arrangement of devices in an electric vehicle according to the second embodiment. [Figure 6] FIG. 6 is a cross-sectional view of the electric vehicle taken along line 6-6 in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] (First embodiment) A first embodiment of an electric vehicle will be described below with reference to Figures 1 to 4. In the following description, the terms "front," "rear," "left," "right," "upper," and "lower" refer to the front, rear, left, right, upper, and lower directions as seen by a passenger facing forward of the vehicle. The left-right direction coincides with the vehicle width direction.

[0009] <Devices equipped in the electric vehicle 10> As shown in FIG. 1 , an electric vehicle 10 includes front wheels 11, rear wheels 12, a first mechanical and electrical integrated unit 13, a second mechanical and electrical integrated unit 14, a battery 15, a first drive shaft 23, a second drive shaft 24, and a charging port 19. The first mechanical and electrical integrated unit 13 includes a first power control device 131, a first motor 132, and a power transmission mechanism (not shown). The second mechanical and electrical integrated unit 14 includes a second power control device 141, a second motor 142, and a power transmission mechanism (not shown). The electric vehicle 10 also includes, as battery-related devices, an on-board charger 20, a battery ECU (Electronic Control Unit) 21, and a branch box 22. The branch box 22 includes a cutoff relay 25. The ECU includes a CPU and a memory in which control programs and data are stored. The ECU performs various control-related processes by the CPU executing programs stored in the memory.

[0010] <About the electrical system of the electric vehicle 10> The dashed lines in Fig. 1 indicate wire harnesses. The charging port 19 and the on-board charger 20 are electrically connected by a wire harness 100. The branching box 22 and the battery 15 are electrically connected by a wire harness 110. The battery ECU 21 and the battery 15 are electrically connected by a wire harness 120. The branching box 22 and the first power control device 131 are electrically connected by a wire harness 130. The branching box 22 and the second power control device 141 are electrically connected by a wire harness 140. The branching box 22 and the on-board charger 20 are electrically connected by a wire harness 101. The branching box 22 and the battery ECU 21 are electrically connected by a wire harness 150.

[0011] <Battery-related devices included in the electric vehicle 10> The on-board charger 20, which is a battery-related device, charges the battery 15 with power from an external charging device located outside the vehicle. AC power is input to the on-board charger 20 via a wire harness 100 from an AC power source connected to a charging port 19. A charging plug of the external charging device is inserted into the charging port 19. The charging port 19 and the on-board charger 20 are used for normal charging using an AC power source of 100 V or 200 V, for example. The on-board charger 20 converts the input AC power into DC power. The on-board charger 20 inputs the converted DC power to the battery 15 via a wire harness 101, a branch box 22, and a wire harness 110. In this way, the battery 15 is charged by the external charging device.

[0012] The battery ECU 21, which is a battery-related device, is a device that controls charging and discharging of the battery 15. The battery ECU 21 acquires information such as the input current, output current, voltage, and temperature of the battery 15 via a wire harness 120 that connects the battery ECU 21 and the battery 15. Based on the acquired information, the battery ECU 21 estimates the capacity CH of the battery 15, the full charge capacity CHmax of the battery 15, the state of charge (SOC) of the battery 15, and the state of health (SOH) of the battery 15. The capacity CH of the battery 15 is the amount of power stored in the battery 15 at the time when the battery ECU 21 acquires the information. The full charge capacity CHmax of the battery 15 is the maximum amount of power that the battery 15 can store at the time when the battery ECU 21 acquires the information. The state of charge SOC of the battery 15 is the value obtained by dividing the full charge capacity CHmax by the capacity CH. The state of health SOH of the battery 15 is an index that indicates how much the full charge capacity CHmax of the battery 15 at the time when the battery ECU 21 acquires the information has decreased compared to the full charge capacity CHmax of the battery 15 at the time of shipment from the factory. The battery ECU 21 controls charging and discharging of the battery 15 based on the capacity CH, full charge capacity CHmax, charging rate SOC, and state of health SOH of the battery 15.

[0013] The branch box 22, which is a battery-related device, is a device that branches DC power supplied from the battery 15 to multiple devices. The branch box 22 supplies the high-voltage DC power output from the battery 15 to a first power control device 131 via a wire harness 130. The branch box 22 supplies the high-voltage DC power output from the battery 15 to a second power control device 141 via a wire harness 140. The branch box 22 is equipped with a DC-DC converter that reduces the voltage of the DC power supplied from the battery 15 via the wire harness 110. The branch box 22 supplies the DC power reduced by the DC-DC converter to the battery ECU 21 via a wire harness 150.

[0014] The branch box 22 may be configured to supply the DC power stepped down by the DC-DC converter to devices other than the battery ECU 21. For example, the branch box 22 may be configured to supply the DC power stepped down by the DC-DC converter to auxiliary devices such as an electric power steering system or an electric oil pump. The electric power steering system is a mechanism that assists the driver in steering the vehicle. The electric oil pump is a mechanism that sucks in lubricating oil and uses it to cool and lubricate the motor.

[0015] The branch box 22 includes a cutoff relay 25. The cutoff relay 25 is a relay circuit that switches between a connected state that allows the power supplied from the battery 15 via the wire harness 110 to flow, and a cutoff state that prevents the power from flowing. When the cutoff relay 25 is in the cutoff state, the battery 15 and the branch box 22 are electrically cut off. As a result, devices connected to the branch box 22 via the wire harness are also electrically cut off from the battery 15.

[0016] <Regarding the drive system of the electric vehicle 10> The first motor 132 and the second motor 142 are motors that are power sources that drive the drive wheels. The battery 15 stores electric power to be supplied to the first motor 132 and the second motor 142. That is, the electric vehicle 10 drives the drive wheels using the electric power stored in the battery 15. The first motor 132 drives the front wheels 11 via the first drive shaft 23. That is, the front wheels 11 are drive wheels. The second motor 142 drives the rear wheels 12 via the second drive shaft 24. That is, the rear wheels 12 are drive wheels.

[0017] The first power control device 131 is a power control device that supplies power to the first motor 132. The first power control device 131 includes an inverter that converts DC power supplied from the battery 15 via the branch box 22 into AC power and supplies it to the first motor 132. The second power control device 141 is a power control device that supplies power to the second motor 142. The second power control device 141 includes an inverter that converts DC power supplied from the battery 15 via the branch box 22 into AC power and supplies it to the second motor 142.

[0018] The electromechanical integrated unit may include a device other than an inverter as a power control device. For example, the electromechanical integrated unit may include, in addition to the inverter, a DC-DC converter that boosts the DC power supplied from the battery 15 via the branch box 22. In this case, the inverter provided as a power control device converts the DC power supplied from the DC-DC converter into AC power and supplies it to the motor. The electromechanical integrated unit may also include, as a power control device, an ECU that controls the power supplied to the motor.

[0019] <Regarding the internal structure of the electric vehicle 10 in the first embodiment> FIG. 2 schematically shows the arrangement of devices in a top view of the electric vehicle 10 in the first embodiment, viewed from above. The battery 15, indicated by a dashed line, is disposed below a floor 16. The electric vehicle 10 has a first mechanical and electrical integrated unit 13 disposed in front of the battery 15. The electric vehicle 10 has a second mechanical and electrical integrated unit 14 disposed behind the battery 15. The electric vehicle 10 has the battery 15 disposed between the first mechanical and electrical integrated unit 13 and the second mechanical and electrical integrated unit 14. The electric vehicle 10 has the battery 15 disposed between the front wheels 11 and the rear wheels 12. The on-board charger 20 is disposed above the second mechanical and electrical integrated unit 14. The charging port 19 is disposed on the left side of the vehicle, behind the battery 15.

[0020] In the electric vehicle 10, first-row seats 17 and second-row seats 18 are arranged above a floor 16. In the electric vehicle 10, second-row seats 18 are arranged further rearward than the first-row seats 17. The electric vehicle 10 includes, as the first-row seats 17, seats 17A arranged on the right side of the vehicle and seats 17B arranged on the left side of the vehicle. Seats 17A and 17B are arranged side by side in the left-right direction of the vehicle. A center tunnel 30, which will be described later, is located between seats 17A and 17B.

[0021] FIG. 3 is a schematic cross-sectional view of the electric vehicle 10 in FIG. 2 taken along line 3-3 in FIG. 2. The positional relationship between the second-row seats 18, the center tunnel 30, the battery ECU 21, and the branch box 22 will be described using FIG. 3. As shown in FIG. 3, the floor 16 is curved convexly upward in the vehicle. As a result, the center tunnel 30 of the electric vehicle 10 is formed below the floor 16 and above the battery 15. The center tunnel 30 is disposed below the seating surfaces 181 of the second-row seats 18. The seating surfaces 181 of the second-row seats 18 are also curved convexly upward in the vehicle in accordance with the curvature of the floor 16. The seating surfaces 181 are composed of a seating surface 181R located to the right of the center tunnel 30, a seating surface 181C located above the center tunnel 30, and a seating surface 181L located to the left of the center tunnel 30. Seat surface 181R, seat surface 181C, and seat surface 181L form a continuous seat surface 181. Seat surface 181R is the seat surface 181 of the right seat in the second row of seats 18. Seat surface 181L is the seat surface 181 of the left seat in the second row of seats 18. Seat surfaces 181R and 181L are disposed at a lower position than seat surface 181C.

[0022] A battery ECU 21 and a branch box 22 are disposed inside the center tunnel 30 below the second-row seats 18 and above the battery 15. The branch box 22 is equipped with a cut-off relay 25. The branch box 22 is disposed above the battery 15 and overlaps it. The battery ECU 21 is disposed above the branch box 22 and overlaps it. The battery ECU 21 and the branch box 22 are disposed below the seat surface 181C. No battery-related equipment is disposed below the seat surfaces 181R and 181L.

[0023] 4 is a schematic cross-sectional view of the electric vehicle 10 in FIG. 2 taken along line 4-4 in FIG. 2. FIG. 4 shows a schematic view of the internal structure of the electric vehicle 10 in a side view of the vehicle as seen from the left side. As shown in FIG. 4, the center tunnel 30 extends in the front-to-rear direction of the electric vehicle 10. The on-board charger 20 is disposed above the second mechanically and electrically integrated unit 14.

[0024] <Operation of the First Embodiment> As shown in FIG. 3 , in the electric vehicle 10, the battery ECU 21 and the branch box 22 are disposed inside the center tunnel 30 located below the seat 181C, rather than below the left seat 181L and the right seat 181R of the second-row seat 18. This allows the seat 181 to be kept lower in the electric vehicle 10 compared to a vehicle that does not have a center tunnel 30 and in which battery-related equipment is disposed below the left seat 181L and the right seat 181R of the second-row seat 18. Specifically, in the electric vehicle 10, the positions of the seat 181R and the seat 181L on which the occupant sits can be lowered in the second-row seat 18. This allows the seating position of the occupant to be kept low, thereby allowing the vehicle height of the electric vehicle 10 to be kept low.

[0025] <Effects of the first embodiment> (1-1) The electric vehicle 10 can be designed with a low vehicle height. (1-2) The on-board charger 20 is disposed above the second mechanical and electrical integrated unit 14. The second mechanical and electrical integrated unit 14 is disposed rearward of the battery 15. The charging port 19 is disposed rearward of the battery 15 and on a side of the vehicle. That is, both the on-board charger 20 and the charging port 19 are disposed rearward of the battery 15. Therefore, in the electric vehicle 10, the distance between the on-board charger 20 and the charging port 19 is shorter than in a case where the on-board charger 20 is disposed below the second-row seat 18 and above the battery 15. Therefore, the electric vehicle 10 requires a shorter wire harness 100 connecting the on-board charger 20 and the charging port 19. A shorter wire harness reduces the weight of the wire harness. That is, the weight of the vehicle is reduced. In addition, a shorter wire harness reduces power loss in the wire harness. This allows the weight of the electric vehicle 10 to be reduced. Furthermore, electric vehicle 10 can reduce power loss in wire harness 100 connecting on-board charger 20 and charging port 19.

[0026] (1-3) The battery 15 and the branch box 22 are connected by a wire harness 110. The branch box 22 is disposed below the second-row seats 18 and above the battery 15. In the electric vehicle 10, the distance between the branch box 22 and the battery 15 is shorter than when the branch box 22 is disposed above the second mechanically and electrically integrated unit 14. Therefore, in the electric vehicle 10, the wire harness 110 connecting the battery 15 and the branch box 22 can be made shorter. A shorter wire harness reduces the weight of the wire harness. That is, the weight of the vehicle is reduced. In addition, a shorter wire harness reduces power loss in the wire harness. As a result, the weight of the electric vehicle 10 can be reduced. Furthermore, in the electric vehicle 10, power loss in the wire harness connecting the battery 15 and the branch box 22 can be reduced.

[0027] (1-4) A high voltage may be applied to the wire harness 110 connecting the branch box 22 and the battery 15. The branch box 22 is disposed below the second-row seats 18 and above the battery 15. The branch box 22 is equipped with a cutoff relay 25. Therefore, in the electric vehicle 10, the cutoff relay 25 can cut off the high-voltage power supplied from the battery 15 at a position closer to the battery 15 than in the case where the branch box 22 is disposed above the second mechanically and electrically integrated unit 14. This allows the electric vehicle 10 to ensure higher safety.

[0028] <Modification of the first embodiment> The above-described first embodiment can be modified and implemented as follows: This embodiment and the following modifications can be implemented in combination with each other within the scope of no technical contradiction.

[0029] In the electric vehicle 10, the branch box 22 may be disposed above the battery ECU 21 inside the center tunnel 30 below the second-row seats 18 and above the battery 15. Even in this case, the distance between the branch box 22 and the battery 15 is shorter in the electric vehicle 10 than when the branch box 22 is disposed above the second mechanically and electrically integrated unit 14. Therefore, the wire harness 110 connecting the battery 15 and the branch box 22 in the electric vehicle 10 can be short.

[0030] In the electrically powered vehicle 10, the battery-related devices do not have to be arranged vertically stacked inside the center tunnel 30 below the second-row seats 18 and above the battery 15. For example, in the electrically powered vehicle 10, the battery ECU 21 and the branch box 22 may be arranged side by side in the fore-and-aft direction of the vehicle inside the center tunnel 30 below the second-row seats 18 and above the battery 15. For example, in the electrically powered vehicle 10, the battery ECU 21 and the branch box 22 may be arranged side by side in the left-and-right direction of the vehicle inside the center tunnel 30 below the second-row seats 18 and above the battery 15.

[0031] In the electric vehicle 10, as long as at least one battery-related device is disposed inside the center tunnel 30 below the second row of seats 18 and above the battery 15, and above the second mechanical and electrical integrated unit 14, the battery ECU 21 may be disposed above the second mechanical and electrical integrated unit 14.

[0032] In the electric vehicle 10, as long as at least one battery-related device is disposed inside the center tunnel 30 below the second row of seats 18 and above the battery 15, and at least one battery-related device is disposed above the second mechanical and electrical integrated unit 14, the branch box 22 may be disposed above the second mechanical and electrical integrated unit 14.

[0033] In the electric vehicle 10, as long as at least one battery-related device is disposed inside the center tunnel 30 below the second-row seats 18 and above the battery 15, and at least one battery-related device is disposed above the second mechanical and electrical integrated unit 14, the on-board charger 20 may be disposed inside the center tunnel 30.

[0034] (Second embodiment) Next, a second embodiment will be described with reference to Figures 5 and 6. The second embodiment will be described mainly focusing on the differences from the first embodiment. The electric vehicle 10 of the second embodiment does not include the center tunnel 30 of the electric vehicle 10 of the first embodiment.

[0035] <Regarding the internal structure of the electric vehicle 10 in the second embodiment> 5 is a schematic diagram showing the arrangement of devices in a top view of the electric vehicle 10 according to the second embodiment, as viewed from above. The battery 15, shown by the dashed line, is disposed below the floor 16.

[0036] In the electric vehicle 10, a first mechanical and electrical integrated unit 13 is disposed in front of the battery 15. In the electric vehicle 10, a second mechanical and electrical integrated unit 14 is disposed in rear of the battery 15. In the electric vehicle 10, the battery 15 is disposed between the first mechanical and electrical integrated unit 13 and the second mechanical and electrical integrated unit 14. The on-board charger 20 is disposed above the second mechanical and electrical integrated unit 14.

[0037] In the electric vehicle 10, a first row of seats 17 and a second row of seats 18 are arranged above a floor 16. In the electric vehicle 10, the second row of seats 18 are arranged further rearward than the first row of seats 17. A battery ECU 21 and a branch box 22, shown by a dashed dotted line, are arranged below the second row of seats 18 and above the battery 15.

[0038] The positional relationship between the second-row seats 18, the battery ECU 21, and the branch box 22 will be described using Figure 6. Figure 6 is a schematic cross-sectional view of the electric vehicle 10 in Figure 5 taken along line 6-6 in Figure 5. As shown in Figure 6, the battery ECU 21 and the branch box 22 are disposed below the second-row seats 18 and above the battery 15. The battery ECU 21 and the branch box 22 are disposed side by side in the left-right direction of the vehicle. The battery ECU 21 is disposed on the right side of the vehicle. The branch box 22 is disposed on the left side of the vehicle.

[0039] <Operation of the Second Embodiment> As shown in Fig. 6, in the electric vehicle 10, the battery ECU 21 and the branch box 22, which are battery-related devices, are disposed below the second-row seats 18 and above the battery 15. As shown in Fig. 5, in the electric vehicle 10, the on-board charger 20, which is battery-related devices, is disposed above the second mechanical and electrical integrated unit 14. That is, in the electric vehicle 10, the battery-related devices are disposed separately below the second-row seats 18 and above the battery 15, and above the second mechanical and electrical integrated unit 14. This makes it possible to keep the vehicle height lower than in a vehicle in which the battery-related devices are disposed together below the second-row seats 18 and above the battery 15.

[0040] <Effects of the second embodiment> (2-1) The electric vehicle 10 can be designed with a low vehicle height. (2-2) The battery ECU 21 is disposed below the second-row seats 18 and above the battery 15. In the electric vehicle 10, the distance between the battery ECU 21 and the battery 15 is shorter than when the battery ECU 21 is disposed above the second mechanically and electrically integrated unit 14. Therefore, the electric vehicle 10 requires a shorter wire harness 120 connecting the battery ECU 21 and the battery 15. A shorter wire harness reduces the weight of the wire harness. That is, the weight of the vehicle is reduced. In addition, a shorter wire harness reduces power loss in the wire harness. This allows the electric vehicle 10 to reduce its weight. Furthermore, the electric vehicle 10 can reduce power loss in the wire harness connecting the battery ECU 21 and the battery 15.

[0041] <Modification of the second embodiment> The second embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0042] In the electric vehicle 10, as long as at least one battery-related device is disposed below the second row of seats 18 and above the battery 15, and above the second mechanical and electrical integrated unit 14, the battery ECU 21 may be disposed above the second mechanical and electrical integrated unit 14.

[0043] In the electric vehicle 10, if at least one battery-related device is disposed below the second row of seats 18 and above the battery 15, and at least one battery-related device is disposed above the second mechanical and electrical integrated unit 14, the branch box 22 may be disposed above the second mechanical and electrical integrated unit 14.

[0044] In the electric vehicle 10, as long as at least one battery-related device is disposed below the second-row seats 18 and above the battery 15, and at least one battery-related device is disposed above the second mechanical and electrical integrated unit 14, the on-board charger 20 may be disposed below the second-row seats 18 and above the battery 15.

[0045] The positions of the battery-related devices below the second-row seats 18 and above the battery 15 of the electric vehicle 10 are not limited to the positions described in the second embodiment. For example, the battery ECU 21 may be disposed on the left side of the vehicle below the second-row seats 18 and above the battery 15. The branch box 22 may be disposed on the left side of the vehicle below the second-row seats 18 and above the battery 15. For example, in the electric vehicle 10, the battery ECU 21 and the branch box 22 may be disposed below the second-row seats 18 and above the battery 15, closer to the right side of the vehicle. For example, in the electric vehicle 10, the battery ECU 21 and the branch box 22 may be disposed below the second-row seats 18 and above the battery 15, closer to the left side of the vehicle. For example, in the electric vehicle 10, the battery ECU 21 and the branch box 22 may be disposed below the second-row seats 18 and above the battery 15, closer to the center of the vehicle. For example, in the electric vehicle 10, the battery ECU 21 and the branch box 22 may be arranged side by side in the front-to-rear direction of the vehicle below the second row of seats 18 and above the battery 15.

[0046] <Other change examples> Other elements that can be modified in common to the above embodiments include the following: The following modifications can be implemented in combination with each other to the extent that they are not technically inconsistent.

[0047] The battery ECU 21 included in the electric vehicle 10 may be responsible for control of operations other than charging and discharging the battery 15. For example, when an external charging device is connected to the charging port 19, the battery ECU 21 may control the charging operation of the electric vehicle 10 by the external charging device. For example, the battery ECU 21 may control the driving of the first motor 132 by controlling the power supplied from the battery 15 to the first power control device 131. For example, the battery ECU 21 may control the driving of the second motor 142 by controlling the power supplied from the battery 15 to the second power control device 141. For example, the battery ECU 21 may be an integrated ECU that controls the electric vehicle 10.

[0048] The branch box 22 does not have to be equipped with the cutoff relay 25. For example, the battery 15 may be equipped with the cutoff relay 25. Even in this case, the high-voltage power supplied from the battery 15 can be cut off by the cutoff relay 25.

[0049] The battery 15 and the battery ECU 21 may be connected by something other than the wire harness 120. For example, the battery 15 and the battery ECU 21 may be connected by a bus bar. The battery 15 and the branch box 22 may be connected by something other than the wire harness 110. For example, the battery 15 and the branch box 22 may be connected by a bus bar. The battery ECU 21 and the branch box 22 may be connected by something other than the wire harness 150. For example, the battery ECU 21 and the branch box 22 may be connected by a bus bar. The on-vehicle charger 20 and the branch box 22 may be connected by something other than the wire harness 101. For example, when the on-vehicle charger 20 and the branch box 22 are disposed below the second-row seats 18 and above the battery 15, the on-vehicle charger 20 and the branch box 22 may be connected by a bus bar. In this case, the battery ECU 21 is disposed above the second mechanically and electrically integrated unit 14.

[0050] Electrically powered vehicle 10 may be configured to use a DC power supply as an external charging device to charge battery 15. For example, charging port 19 may be configured to be used for rapid charging using a DC high-voltage power supply of 50 kW or the like. In this case, charging port 19 is electrically connected to branch box 22 in addition to on-board charger 20. For example, charging port 19 and branch box 22 may be electrically connected by a wire harness. As a result, DC power input from the DC power supply connected to charging port 19 is supplied to battery 15 via branch box 22.

[0051] The charging port 19 of the electric vehicle 10 is disposed on the left side of the vehicle rearward of the battery 15. The location of the charging port 19 is not limited to being on the left side of the vehicle rearward of the battery 15. In the electric vehicle 10, as long as at least one battery-related device is disposed below the second-row seats 18 and above the battery 15, and above the second mechanical and electrical integrated unit 14, the charging port 19 may be disposed on the right side of the vehicle rearward of the battery 15. The charging port 19 may also be disposed forward of the battery 15.

[0052] <Additional Notes> The technical ideas that can be understood from the above-described embodiment and modified examples will be described. [Appendix 1] An electric vehicle in which drive wheels are driven by electric power stored in a battery, the electric vehicle comprising a first motor and a second motor as motors that are power sources for driving the drive wheels, the battery storing electric power to be supplied to the first motor and the second motor, a first electric power control device that supplies electric power to the first motor, and a second electric power control device that supplies electric power to the second motor, a first mechanical and electrical integrated unit consisting of the first motor and the first electric power control device, and a second mechanical and electrical integrated unit consisting of the second motor and the second electric power control device. an electric vehicle including a unit and a plurality of battery-related devices, wherein the battery is disposed under a floor and between the front wheels and the rear wheels, the first mechanical and electrical integrated unit is disposed forward of the battery, and the second mechanical and electrical integrated unit is disposed rearward of the battery, a first row of seats and a second row of seats positioned rearward of the first row of seats are disposed on the floor, and the battery-related devices are disposed below the second row of seats and above the battery and above the second mechanical and electrical integrated unit.

[0053] [Appendix 2] The electric vehicle described in [Appendix 1], comprising, as the battery-related equipment, a battery ECU that controls charging and discharging of the battery, an on-board charger that charges the battery with external power, and a branch box that branches the power supplied from the battery.

[0054] [Appendix 3] An electric vehicle as described in [Appendix 1] or [Appendix 2], which is provided with a charging port to which an AC power source can be connected, an on-board charger which is the battery-related device is arranged above the second mechanically and electrically integrated unit, the charging port is connected to the on-board charger by a wire harness, and the charging port is arranged rearward of the battery and on the side of the vehicle.

[0055] [Appendix 4] An electric vehicle as set forth in any one of [Appendix 1] to [Appendix 3], wherein a branch box, which is the battery-related equipment, is disposed below the second row of seats and above the battery, the battery and the branch box are connected by a wire harness, and the branch box is equipped with a cut-off relay that cuts off the power supplied from the battery.

[0056] [Appendix 5] The electric vehicle according to any one of [Appendix 1] to [Appendix 4], wherein a battery ECU, which is the battery-related device, is disposed below the second row of seats and above the battery.

[0057] [Appendix 6] An electric vehicle as described in any one of [Appendix 1] to [Appendix 5], wherein the on-board charger, which is the battery-related device, is disposed above the second mechanically and electrically integrated unit, and the battery ECU, which is the battery-related device, and the branch box, which is the battery-related device, are disposed below the second row of seats and above the battery.

[0058] [Appendix 7] The electric vehicle according to any one of [Appendix 1] to [Appendix 6], wherein the first row of seats are two seats arranged side by side in the left-right direction of the vehicle, a center tunnel is arranged between the two seats, the center tunnel is arranged below the floor and above the battery, the center tunnel is arranged on the floor from the front to the rear of the vehicle, the center tunnel is arranged below the seat surfaces of the second row of seats, and the battery-related equipment is arranged inside the center tunnel below the second row of seats and above the battery, and above the second mechanical and electrical integrated unit. [Explanation of symbols]

[0059] 10...Electric vehicles 11...Front wheel 12...Rear wheel 13...First mechanical and electrical integrated unit 14...Second mechanical and electrical integrated unit 15...Battery 16...Floor 17...1st row seats 18...Second row seats 19…Charging port 20…In-vehicle charger 21...Battery ECU 22...Branch box 25...Shut-off relay 30...Center tunnel 131...First power control device 132...First motor 141...Second power control device 142...Second motor

Claims

1. An electric vehicle whose drive wheels are driven by electricity stored in a battery. The vehicle includes a first motor and a second motor as power sources for driving the drive wheels, the battery stores power to be supplied to the first motor and the second motor; a first power control device that supplies power to the first motor, and a second power control device that supplies power to the second motor; a first mechanical and electrical integrated unit consisting of the first motor and the first power control device; a second mechanical and electrical integrated unit consisting of the second motor and the second power control device; and a plurality of battery-related devices; the battery is disposed under a floor and between front and rear wheels, the first mechanical and electrical integrated unit is disposed forward of the battery, and the second mechanical and electrical integrated unit is disposed rearward of the battery, a first row of seats and a second row of seats located rearward of the first row of seats in the vehicle are arranged on the floor; The battery-related devices are disposed below the second-row seats and above the battery, and above the second mechanically and electrically integrated unit. Electric vehicle.

2. The battery-related equipment includes: a battery ECU that controls charging and discharging of the battery; an on-board charger that charges the battery with external power; a branch box that branches the power supplied from the battery. The electric vehicle according to claim 1 .

3. Equipped with a charging port that can be connected to an AC power source, The charging port is connected to the on-board charger by a wire harness, The charging port is disposed rearward of the battery and on a side of the vehicle, The on-board charger is disposed above the second mechanically and electrically integrated unit. The electric vehicle according to claim 2 .

4. the branch box includes a cutoff relay that cuts off the power supplied from the battery; The battery and the branch box are connected by a wire harness, The branch box is disposed below the second-row seats and above the battery. The electric vehicle according to claim 2 .

5. The battery ECU is disposed below the second row seats and above the battery. The electric vehicle according to claim 2 .

6. the on-board charger is disposed above the second electromechanical integrated unit; The battery ECU and the branch box are disposed below the second-row seats and above the battery. The electric vehicle according to claim 2 .

7. As the first row of seats, two seats are arranged side by side in the left-right direction of the vehicle, A center tunnel is disposed between the two seats, the center tunnel is disposed below the floor and above the battery, the center tunnel is disposed on the floor from a front side of the vehicle to a rear side of the vehicle, and the center tunnel is disposed below seat surfaces of the second-row seats, The battery-related devices are arranged inside the center tunnel below the second-row seats and above the battery, and above the second mechanically and electrically integrated unit. The electric vehicle according to claim 1 .

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