VEHICLE

Abstract

A vehicle comprises: a vehicle interior; a front compartment provided in front of the vehicle interior; an electric motor control unit provided at a rear side of the vehicle interior and beneath a floor panel; a battery provided beneath the vehicle interior and beneath the floor panel; a cooling device provided in the front compartment; a first cooling line configured to supply coolant from the cooling device to the electric motor control unit; and a second cooling line configured to discharge coolant from the electric motor control unit to the cooling device. The floor panel has a recessed section extending upwards, and the first and second cooling lines are housed within this recessed section.

Description

TECHNICAL AREA

[0001] The present invention relates to a vehicle comprising an electric motor control unit and a cooling device which cools the electric motor control unit. BACKGROUND DESCRIPTION OF THE STATE OF THE ART

[0002] In the vehicle disclosed in JP-A-2018-96280, an electric motor control unit (PCU) and a cooling device which cools the electric motor control unit (radiator) are arranged in a front space which is provided in front of a vehicle interior.

[0003] In a rear-wheel-drive vehicle, an electric motor and electric motor control unit are located at the rear of the vehicle, while a battery is positioned beneath a floor panel in the center of the vehicle, and a cooling system may be located in the front. In this case, a cooling line connecting the cooling system and the motor control unit must run from the front to the rear of the vehicle. However, if the cooling line is routed along the side to avoid the battery, it may be damaged by foreign objects or external impacts. Furthermore, if the cooling line is located between the battery and the floor panel, there is a risk that the battery's installation height may be reduced due to the line's influence, potentially decreasing the clearance between the vehicle and the ground.

[0004] Furthermore, DE 10 2013 200 880 A1 discloses a vehicle power supply system comprising a power connection port which has a power supply interface which is provided within a trunk and electrically connected to a DC power source, and an inverter device which is provided separately from a fuel cell vehicle (an electrically powered vehicle) and is arranged within the trunk, wherein an inverter installation space is provided in the trunk where the inverter device can be installed in a position which, when viewed from a forward and reverse direction of the vehicle, does not overlap with the power supply interface, and a connecting cable is provided on the inverter device which is extended from a side surface and of which a front end section has a connection section.which is connected to the power supply interface.

[0005] Furthermore, JP 2011 - 230 530 A discloses an electric vehicle in which a cooling pipe and the wiring harness of an electrical system can be connected to an electrical system unit with lower costs and a reduced number of assembly operations.The electric vehicle comprises a power converter that transforms electrical current supplied by a vehicle-mounted battery via power lines; a rotating machine driven by the electrical current supplied by the power converter and located beneath the vehicle's floor panel; a chassis housing the power converter, positioned above the floor panel; a chassis inlet port for introducing coolant to circulate within the chassis; a chassis outlet port for draining the coolant from the chassis; a first cooling line connected to the chassis inlet port; and a second cooling line, one end of which is connected to the chassis outlet port and the other end of which is connected to the rotating machine.The vehicle also has an opening formed on the base plate and under the chassis, into which the power lines and the first and second cooling lines are inserted.

[0006] Furthermore, DE 10 2010 041 276 A1 discloses a vehicle with at least one energy storage device for electrical energy and with at least one device for cooling the at least one energy storage device, as well as a method for cooling the energy storage device. The at least one energy storage device is thermally coupled to parts rigidly connected within the vehicle, the parts being designed to cool the energy storage device. The heat is dissipated directly or indirectly to vehicle parts with a large thermal mass and / or to vehicle parts with a large surface area in direct thermal contact with the vehicle environment. SUMMARY

[0007] One aspect of the present invention is a vehicle in which it is prevented that a battery is lowered due to the influence of a cooling line and the distance between the ground and the battery can be reduced.

[0008] One embodiment of the invention relates to a vehicle which comprises: a vehicle interior; a front space which is provided in front of the vehicle interior; an electric motor control unit, which is provided on a rear side of the vehicle interior and below a floor panel; a battery which is provided below the vehicle interior and below the floor panel; a cooling device which is provided in the front room; a first cooling line, which is designed to supply a coolant from the cooling device to the electric motor control unit; and a second cooling line, which is designed to carry the coolant from the electric motor control unit to the cooling device, wherein the floor panel has a recessed section which is recessed upwards, and the first cooling line and the second cooling line are housed in the recessed section.

[0009] According to the above embodiment of the present invention, a first cooling line and a second cooling line, which connect a cooling device provided in a front space and an electric motor control device provided in a rear side of a vehicle interior, are housed in a recessed section of a floor panel, so that the distance between a battery and the floor panel can be reduced and the distance between the ground and the battery can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic side view showing the overall structure of a vehicle according to a first embodiment of the present invention. Fig. Figure 2 is a top view showing the underbody structure of the vehicle. Fig. 1 shows. Fig. 3 is a side view showing the vehicle's cooling lines and cables in Fig. 1 shows. Fig. Figure 4 is a top view showing a drive unit of the vehicle in Fig. 1 and its surroundings. Fig. Figure 5 is a view from below, showing the lower surface of a floor panel, the cooling lines and the vehicle's cables. Fig. 1 shows. Fig. 6 is a sectional view along a line AA in Fig. 5. Fig. Figure 7 is a perspective exploded view showing the arrangement of the vehicle's cooling lines and cables. Fig. 1 shows. Fig. Figure 8 is a schematic side view showing the overall structure of a vehicle according to a second embodiment of the present invention. Fig. Figure 9 is a view from below, showing the lower surface of a floor panel, the cooling lines and the vehicle's cables. Fig. 8 shows. Fig. Figure 10 is a cross-sectional view along a line BB in Fig. 9. DESCRIPTION OF EXECUTION FORMS

[0010] A vehicle according to each embodiment of the present invention is described below with reference to the drawings. The drawings should be viewed based on a direction of reference numerals. In the following description, a front, a rear, a left, a right, a top, and a bottom direction are described according to the view of an operator. In the drawings, a front side of the vehicle is designated Fr, a rear side is designated Rr, a left side is designated L, a right side is designated R, a top side is designated U, and a bottom side is designated D. <Erste Ausführungsform> [Overall structure of the vehicle]

[0011] As in the Fig. 1 and Fig. As shown in Figure 2, a vehicle 1 according to a first embodiment of the present invention is formed by a vehicle interior 10 and a front space 20 in front of the vehicle interior 10, which are defined by a floor panel 2 and an instrument panel 3. Front seats 11 and rear seats 12 are provided in the vehicle interior 10. A drive unit 30 is provided below the floor panel 2 behind the rear seats 12. The drive unit 30 drives a left and a right rear wheel 5. That is, in the vehicle 1, the left and the right rear wheels 5 are drive wheels and a left and a right front wheel 4 are driven wheels. The front wheels 40 and the rear wheels 5 are held by a vehicle body frame 50 via suspensions (not shown) held by respective suspension bracket sections 6. [Vehicle body frame]

[0012] A vehicle body frame 50 comprises a pair of left and right side elements 51, 52 extending in a front-to-rear direction, a plurality of transverse elements 53 extending in a left-to-right direction and connecting the side elements 51, 52, and a subframe 54 having a rectangular shape to surround the drive unit 30. The subframe 54 comprises a pair of bottom elements 55, 56, which are held by the pair of side elements 51, 52, and a front frame element 57 and a rear frame element 58, which connect the pair of bottom elements 55, 56. [Drive unit]

[0013] The drive unit 30 comprises a drive unit 31, which includes a motor MOT (such as an electric motor), and a power control unit (PCU) 32 (such as an electric motor control unit), which controls the motor MOT. The drive unit 31 and the PCU 32 are electrically connected via a busbar (not shown).

[0014] As in Fig. As shown in Figure 4, the drive unit 30 is fixed to a front frame member 57 via a pair of front mounting sections 541 and to a rear frame member 58 via a pair of rear mounting sections 542. The drive unit 31 is provided with the motor MOT and a gearbox (not shown), and torque from the motor MOT is transmitted via the gearbox to an output shaft 311 (referring to Figure 4). Fig. 3) is transferred and is transmitted from the output shaft 311 to the rear wheels 5. [Battery]

[0015] As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, a battery 60 is arranged below the vehicle interior 10. The battery 60 is located below the floor panel 2 and comprises a plurality of battery modules 61, a battery ECU 62 which is arranged on the battery modules 61, and a battery housing 63 which accommodates the battery modules 61 and the battery ECU 62.

[0016] The battery housing 63 includes a cover plate 631, which covers the battery modules 61 and the battery ECU 62. The cover plate 631 has a cover section 631a that curves upwards towards a position corresponding to the battery ECU 62. That is, only the area of ​​the cover plate 631 that accommodates the battery ECU 62 is curved upwards, so that the height of the rest of the cover plate 631 remains low. [Refrigeration unit]

[0017] The front compartment 20 is equipped with a cooling unit 70 for cooling the PCU 32. The cooling unit 70 includes a radiator, which is provided at the front of the vehicle 1. As shown in the Fig. 2 and Fig. As shown in Figure 3, the cooling unit 70 and the PCU 32 are connected by cooling lines 71. The cooling lines 71 are arranged between the floor panel 2 and the battery 60 (battery housing 63). The cooling lines 71 comprise a first cooling line 72 for supplying coolant from the cooling unit 70 to the PCU 32 and a second cooling line 73 for returning coolant from the PCU 32 to the cooling unit 70. In this way, the cooling lines 71 (72, 73), which connect the cooling unit 70 and the PCU 32, are arranged between the floor panel 2 and the battery 60, so that the long lines, which extend in the front-to-rear direction of the vehicle 1, are protected over a large area. [Terminal box and cable arrangement]

[0018] As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, the front compartment 20 is provided with a junction box 80, which is connected to a charging port (not shown) located on an upper section of the front end of the vehicle 1. The junction box 80 is connected to the battery 60 via a battery cable 81 and to the power control unit 32 via a power control cable 82. The power control cable 82 comprises a first cable 821 extending from the junction box 80 and a second cable 822 extending from the power control unit 32. The first cable 821 and the second cable 822 are connected to each other via a junction box 8, which is fixed to a lower surface of the transverse element 53 located between the battery 60 and the drive unit 30. [Structure under the floor panel]

[0019] As in the Fig. 5 and Fig. As shown in Figure 6, the floor panel 2 has a recessed section 2a, which extends upwards. The recessed section 2a is formed in the left-right center portion of the floor panel 2 along the front-to-back direction, and the first cooling line 72 and the second cooling line 73 are housed within the recessed section 2a. When arranging a portion of the first cooling line 72 and the second cooling line 73, which connects the cooling device 70 provided in the front compartment 20 and the PCU 32 provided in the rear part of the vehicle interior 10 between the floor panel 2 and the battery 60, this portion of the first cooling line 72 and the second cooling line 73 is housed within the recessed section 2a of the floor panel 2, thus reducing the distance between the battery 60 and the floor panel 2 and ensuring adequate clearance between the ground and the battery 60.

[0020] Furthermore, part of the PCU cable 82 for connecting the junction box 80, which is provided in the front compartment 20, and the PCU 32 is also housed in the recessed section 2a of the floor panel. By housing the PCU cable 82 in the recessed section 2a of the floor panel 2, the PCU cable 82 can be arranged in a space surrounded by the floor panel 2 and the battery 60, thus protecting the PCU cable 82 from impact or the like.

[0021] As in Fig. As shown in Figure 6, the PCU cable 82 is housed in the recessed section 2a of the floor panel 2 such that it overlaps the first cooling line 72 and the second cooling line 73 vertically. According to this configuration, by housing the PCU cable 82, the first cooling line 72, and the second cooling line 73 in the recessed section 2a of the floor panel 2, the height dimension of the recessed section 2a can be reduced, and the impact on the vehicle interior 10 can be minimized.

[0022] The PCU cable 82 is arranged between the first cooling line 72 and the second cooling line 73. As described above, heat generation of the PCU cable 82 by coolant flowing through the first cooling line 72 and the second cooling line 73 can be reduced. Furthermore, the PCU cable 82 is arranged between the first cooling line 72 and the second cooling line 73 in the vehicle width direction of the vehicle 1, so that the PCU cable 82 is located near the center in the vehicle width direction, and electrical safety can be improved.

[0023] As in the Fig. 5, Fig. 6 to Fig. As shown in Figure 7, the PCU cable 82 is fixed directly or indirectly to at least one of the first cooling lines 72 and the second cooling line 73. In the present embodiment, the first cooling line 72 and the second cooling line 73 are connected via a plurality of bridge elements 74, and the PCU cable 82 is fixed to the bridge elements 74. More specifically, the PCU cable 82 has a fixed clamp 83 which projects downwards, and a curved section 83a of the fixed clamp 83 is fitted into a hole 74a of the bridge element 74, so that the PCU cable 82 is fixed to the bridge element 74.

[0024] This means that the PCU cable 82 of the present embodiment is indirectly fixed to the first cooling line 72 and the second cooling line 73, but the present invention is not limited to this and the PCU cable 82 can be directly fixed to at least one of the first cooling line 72 and the second cooling line 73. According to such a configuration, the PCU cable 82, the first cooling line 72 and the second cooling line 73 can be pre-assembled and handled as a sub-assembly, thus simplifying the assembly work compared to the case in which they are assembled separately.

[0025] The PCU cable 82, the first cooling line 72, and the second cooling line 73, which are pre-assembled, are fixed to the base panel 2 by means of a plurality of brackets 75. The bracket 75 is a plate-shaped element that closes the recessed section 2a of the base panel 2 from below. According to such a configuration, even if the stiffness of the base panel 2 is reduced due to the recessed section 2a formed in the base panel 2, the stiffness of the base panel 2 can be increased by fixing the recessed section 2a from below using the bracket 75, which is a plate-shaped element. Fig. Reference numeral 76 designates another bridge element that connects the first cooling line 72 and the second cooling line 73. The bracket 75 is attached to the other bridge element 76 with a screw 77, so that the PCU cable 82, the first cooling line 72, the second cooling line 73 and the bracket 75 can be pre-assembled and handled as a sub-assembly.

[0026] The curved section 83a of the fixed clamp 83 curves downwards further than the PCU cable 82, the first cooling line 72 and the second cooling line 73. Therefore, there is a risk that the curved section 83a may collide with the cover plate 631 of the battery 60 when the subassembly is fixed to the bottom panel 2.

[0027] Therefore, as in Fig. Figure 6 shows a recessed cover section 631b, which is recessed downwards, provided on the cover plate 631 of the battery 60 at a position corresponding to the curved section 83a of the fixed clamp 83, so that a collision between the curved section 83a of the fixed clamp 83 and the cover plate 631 is prevented. Furthermore, the cover plate 631 is provided with a drainage channel 631c, which is connected to a part of the recessed cover section 631b. According to such a configuration, not only can the collision between the curved section 83a of the fixed clamp 83 and the cover plate 631 be prevented, but the accumulation of moisture in the recessed cover section 631b of the cover plate 631 can also be avoided.

[0028] As in Fig. As shown in Figure 2, the cover plate 631 of the battery 60 has the projecting cover section 631a, which, as described above, curves upwards to a position corresponding to the battery ECU 62. However, the battery ECU 62 and the projecting cover section 631a are arranged in positions which, in plan view, do not overlap the recessed section 2a of the base panel 2. Therefore, it is possible to prevent the projecting cover section 631a (battery ECU 62) from colliding with the PCU cable 82, the first cooling line 72, and the second cooling line 73.

[0029] As in the Fig. 5 and Fig. As shown in Figure 6, the base panel 2 has a second recessed section 2b in a position corresponding to the preceding cover section 631a, which is recessed upwards. Therefore, the distance between the battery 60 and the base panel 2 can be reduced and the distance between the ground and the battery 60 can be ensured. [Second embodiment]

[0030] Next, with reference to the Fig. 8, Fig. 9 to Fig. 10 describes a second embodiment. It should be noted that the description of the first embodiment is included by designating the same configurations as in the first embodiment with the same reference numerals as in the first embodiment.

[0031] The vehicle 1 of the second embodiment further comprises an inverter 90, which is provided in the rear part of the vehicle interior 10 and above the floor panel 2. The inverter 90 is a power converter device for supplying AC100V current to an AC100V output (not shown) provided in the vehicle interior 10 and is connected to the battery 60 via an inverter cable 91. The inverter cable 91, extending from the inverter 90, runs through the floor panel 2 and is arranged in the recessed section 2a. More specifically, the inverter cable 91 is fixed to a plurality of bridge elements 74, which connect the first cooling line 72 and the second cooling line 73 to be parallel to the PCU cable 82, and is housed together with the PCU cable 82, the first cooling line 72, and the second cooling line 73 as a subassembly in the recessed section 2a.According to such a configuration, not only can the PCU cable 82, the first cooling line 72 and the second cooling line 73 be arranged together, but the assembly work can also be simplified by handling them as a sub-assembly.

[0032] Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above and modifications, improvements or the like may be made if necessary.

[0033] At least the following items are described in the present description. Although the corresponding constitutive elements or the like are shown in parentheses in the embodiments described above, the present invention is not limited thereto.

[0034] (1) A vehicle (Vehicle 1), comprising: a vehicle interior (vehicle interior 10); a front compartment (front compartment 20) which is provided in front of the vehicle interior; an electric motor control unit (PCU 32) which is provided on a rear side of the vehicle interior and below a floor panel (floor panel 2); a battery (battery 60) which is provided below the vehicle interior and below the floor panel; a cooling device (cooling device 70) which is provided in the front room; a first cooling line (first cooling line 72) which is designed to supply a coolant from the cooling device to the electric motor control unit; and a second cooling line (second cooling line 73), which is designed to carry the coolant from the electric motor control unit to the cooling device, wherein the floor panel has a recessed section (recessed section 2a) which is recessed upwards, and the first cooling line and the second cooling line are housed in the recessed section.

[0035] According to (1), the first cooling line and the second cooling line, which connect the cooling device provided in the front space and the electric motor control device provided in a rear side of the vehicle interior, are housed in the recessed section of the floor panel so that the distance between the battery and the floor panel can be reduced and the distance between the ground and the battery can be ensured.

[0036] (2) The vehicle referred to in (1) shall also include: a high-voltage cable (PCU cable 82) which connects a device (junction box 80) provided in the front room and the electric motor control unit, the high-voltage cable is housed in the recessed section.

[0037] According to (2) the high-voltage cable is housed in the recessed section of the base panel, so that the high-voltage cable can be arranged in a space surrounded by the base panel and the battery and the high-voltage cable can be protected from impact or the like.

[0038] (3) In the case of the vehicle referred to in (2), The high-voltage cable overlaps the first cooling line and the second cooling line in one vertical direction.

[0039] According to (3) the high-voltage cable is arranged such that it overlaps in the vertical direction with the first cooling line and the second cooling line, so that the high-voltage cable can be arranged in a space surrounded by the base panel and the battery and the high-voltage cable can be protected from impact or the like.

[0040] (4) In the case of the vehicle referred to in (3), The high-voltage cable is located between the first cooling line and the second cooling line.

[0041] According to (4) the high voltage cable is arranged between the first cooling line and the second cooling line, so that the high voltage cable can be cooled by the coolant flowing through the first cooling line and the second cooling line.

[0042] (5) In the case of the vehicle according to one of (2) to (4), Is the high-voltage cable fixed directly or indirectly to at least one of the first cooling lines and the second cooling line? The first cooling line and the second cooling line are fixed to the floor panel via a bracket (bracket 75).

[0043] According to (5) the high-voltage cable is fixed directly or indirectly to at least one of the first cooling line and the second cooling line, so that the high-voltage cable, the first cooling line and the second cooling line can be pre-assembled and the assembly work can be simplified.

[0044] (6) In the case of the vehicle referred to in (5), The high-voltage cable is fixed directly or indirectly to at least one of the first cooling lines and the second cooling line via a fixed component (fixed clamp 83), The fixed component includes a curved section (curved section 83a) which curves further downwards than the high-voltage cable, the first cooling line and the second cooling line, and A cover plate (cover plate 631) of the battery comprises a recessed cover section (recessed cover section 631b) which is provided in a position corresponding to the curved section, and a drain channel (drain channel 631c) which is connected to the recessed cover section.

[0045] According to (6), the battery cover plate is provided with the recessed cover section, which is positioned according to the curved section of the fixed component, so that collision between the fixed component and the cover plate can be prevented. Furthermore, the drain channel is connected to the recessed cover section, so that the accumulation of moisture in the recessed section of the cover plate can be prevented.

[0046] (7) In the case of the vehicle referred to in (5) or (6), The bracket is a plate-shaped element that closes the recessed section from below.

[0047] According to (7) the stiffness of the floor panel is reduced due to the recessed section formed on the floor panel, however the stiffness of the floor panel can be increased by fixing the recessed section from below using the bracket as the plate-shaped element.

[0048] (8) In the case of the vehicle according to one of (1) to (7), The battery comprises a battery module (battery module 61) and an electrical device (battery ECU 62) which is arranged on an upper section of the battery module, and The electrical device is arranged in a position which, in a top view, does not overlap the recessed section.

[0049] According to (8) the electrical device which projects upwards from the battery module is arranged in a position which does not overlap the recessed section of the bottom panel, so that interference between the electrical device and the first cooling line and the second cooling line can be prevented.

[0050] (9) In the case of the vehicle referred to in (8), The battery cover plate has a projecting cover section (projecting cover section 631a) at a position corresponding to the electrical device and The floor panel has a second recessed section (second recessed section 2b) at a position corresponding to the preceding cover section, which is recessed upwards.

[0051] According to (9), the base panel has, at the position corresponding to the foreground cover section which covers the electrical device, the second recessed section which is recessed upwards, so that the distance between the battery and the base panel can be reduced and the distance between the ground and the battery can be ensured.

[0052] (10) The vehicle according to any of (1) to (9), further comprising: an inverter (Inverter 90), which is provided in the rear of the vehicle interior and above the floor panel, wherein a power cable (inverter cable 91) extending from the inverter runs through the floor panel and is arranged in the recessed section.

[0053] According to (10) the power cable extending from the inverter can also be arranged in the recessed section, so that the power cable, the first cooling line and the second cooling line are arranged collectively.

[0054] A vehicle comprises: a vehicle interior; a front compartment provided in front of the vehicle interior; an electric motor control unit provided at a rear side of the vehicle interior and beneath a floor panel; a battery provided beneath the vehicle interior and beneath the floor panel; a cooling device provided in the front compartment; a first cooling line configured to supply coolant from the cooling device to the electric motor control unit; and a second cooling line configured to discharge coolant from the electric motor control unit to the cooling device. The floor panel has a recessed section extending upwards, and the first and second cooling lines are housed within this recessed section.

Claims

[1] Vehicle (1), comprising: a vehicle interior; a front space (20) which is provided in front of the vehicle interior (10); an electric motor control device (32) which is provided on a rear side of the vehicle interior (10) and below a floor panel (2); a battery (60) which is provided below the vehicle interior (10) and below the floor panel (2); a cooling device (70) which is provided in the front space (20); a first cooling line (72) which is designed to supply a coolant from the cooling device (70) to the electric motor control device (32); and a second cooling line (73) which is designed to carry the coolant from the electric motor control unit (32) to the cooling device (70), wherein the floor panel (2) has a recessed section (2a) which is recessed upwards, and wherein the first cooling line (72) and the second cooling line (73) are housed in the recessed section (2a). [2] Vehicle (1) according to claim 1, further comprising: a high-voltage cable (82) which connects a device (80) provided in the front space (20) and the electric motor control device (32), the high voltage cable (82) is housed in the recessed section (2a). [3] Vehicle (1) according to claim 2, wherein the high-voltage cable (82) overlaps the first cooling line (72) and the second cooling line (73) in a vertical direction. [4] Vehicle (1) according to claim 3, wherein the high voltage cable (82) is arranged between the first cooling line (72) and the second cooling line (73). [5] Vehicle (1) according to any one of claims 2 to 4, wherein the high-voltage cable (82) is fixed directly or indirectly to at least one of the first cooling lines (72) and the second cooling line (73) and wherein the first cooling line (72) and the second cooling line (73) are fixed to the base panel (2) via a bracket (75). [6] Vehicle (1) according to claim 5, wherein the high-voltage cable (82) is fixed directly or indirectly to at least one of the first cooling lines (72) and the second cooling line (73) via a fixed component (83), wherein the fixed component (83) comprises a curved section (83a) which curves downwards further than the high-voltage cable (82), the first cooling line (72) and the second cooling line (73), and wherein a cover plate (631) of the battery (60) comprises a recessed cover section (631b) which is provided at a position corresponding to the curved section (83a) and a drain channel (631c) which is connected to the recessed cover section (631b). [7] Vehicle (1) according to claim 5 or 6, wherein the holder (75) is a plate-shaped element which closes the recessed section (2a) from below. [8] Vehicle (1) according to any one of claims 1 to 7, wherein the battery (60) comprises a battery module (61) and an electrical device (62) which is arranged on an upper section of the battery module (61), and wherein the electrical device (62) is arranged in a position which, in a top view, does not overlap the recessed section (2a). [9] Vehicle (1) according to claim 8, wherein the cover plate (631) of the battery (60) has a projecting cover section (631a) at a position corresponding to the electrical device (62) and wherein the floor panel (2) has a second recessed section (2b) at a position corresponding to the preceding cover section (631a), which is recessed upwards. [10] Vehicle (1) according to any one of claims 1 to 9, further comprising: an inverter (90) which is provided in the rear side of the vehicle interior (10) and above the floor panel (2), wherein a power cable (91) extending from the inverter (90) passes through the floor panel (2) and is arranged in the recessed section (2a).

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