Electric vehicle

Abstract

To provide an electric vehicle having a structure in which power is supplied from a battery disposed in a vehicle front part to a rear motor in a vehicle rear part, and in which a power supply harness can be disposed while satisfying conditions such as onboard equipment location and vehicle interior comfort.SOLUTION: An electric vehicle V comprises a battery 2 disposed on an upper surface side of a floor panel 1 in a vehicle front part, a rear motor 3 disposed on a lower surface side of the floor panel 1 in a vehicle rear part, a harness 4 electrically connecting the battery 2 and the rear motor 3, and a first through-hole 11 formed in a location below a center console 5 in the floor panel 1. The harness 4 is disposed to extend from the battery 2 to the rear motor 3 through the first through-hole 11.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric vehicle, and more particularly to an electric vehicle having a structure in which a battery and a rear motor are arranged apart from each other. [Background technology]

[0002] An example of a conventional electric vehicle is described in Patent Document 1. Patent Document 1 describes an electric vehicle equipped with a front motor that drives the front wheels, a rear motor that drives the rear wheels, and a battery that supplies electricity to both motors. In such an electric vehicle, if the battery is mounted at the front or rear of the vehicle, the battery and one of the motors will be located far apart, and the power supply harness will also be long. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-61414 Summary of the Invention [Problem to be solved by the invention]

[0004] It is well known that automobiles generally have a large number of devices mounted on them. For this reason, when connecting a battery and a motor that are located apart with a long harness, as in the electric vehicle described above, it is necessary to consider conditions such as the location of the mounted devices and the livability of the vehicle interior.

[0005] The present invention has been made in consideration of the above-mentioned conventional situation, and aims to provide an electric vehicle that has a structure in which power is supplied from a battery located at the front of the vehicle to a rear motor at the rear of the vehicle, and in which a power supply harness can be arranged while meeting conditions such as the location of onboard equipment and the livability of the passenger compartment. [Means for solving the problem]

[0006] An electric vehicle according to the present invention includes a battery arranged on the upper surface of a floor panel at the front of the vehicle, a rear motor arranged on the lower surface of the floor panel at the rear of the vehicle, a harness electrically connecting the battery and the rear motor, and a first through-hole formed in the floor panel below a center console. The electric vehicle is characterized in that the harness is arranged to run from the battery through the first through-hole to the rear motor. [Effects of the Invention]

[0007] By adopting the above-described configuration, the electric vehicle according to the present invention is arranged such that the harness runs from the battery arranged on the upper surface of the floor panel at the front of the vehicle, through a first through-hole formed below the center console, to the lower surface of the floor panel, and to the rear motor arranged on the lower surface of the floor panel at the rear of the vehicle. One end of the harness is connected to the battery, and the other end is connected to the rear motor, supplying power from the battery to the rear motor.

[0008] In the above electric vehicle, the harness is arranged on the underside of the floor of the passenger compartment, so the harness does not affect the arrangement of onboard equipment, the livability of the passenger compartment, etc. In this way, the above electric vehicle is an electric vehicle having a structure in which power is supplied from a battery arranged in the front of the vehicle to a rear motor in the rear of the vehicle, and the power supply harness can be arranged while satisfying conditions such as the location of onboard equipment and the livability of the passenger compartment. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a cross-sectional view of a main part showing a first embodiment of an electric vehicle according to the present invention. [Figure 2] FIG. 2 is a perspective view of the main part shown in FIG. [Figure 3] 1A is a plan view of a reinforcing member, and FIG. 1B is a plan view of a first through-hole portion in a floor panel. [Figure 4] FIG. 2 is a plan view showing a state in which a reinforcing member is arranged on a floor panel. [Figure 5] 4A is a cross-sectional view showing a state in which a harness is inserted through a first through-hole shown in FIG. 3, and FIG. 4B is a cross-sectional view showing a state in which a harness is inserted through a small first through-hole. [Figure 6] 4 is a cross-sectional view illustrating a portion where a harness passes through a floor panel. FIG. [Figure 7] 5 is a cross-sectional view taken along the line AA in FIG. 4. [Figure 8] FIG. 10 is an explanatory diagram showing a load applied to a first through-hole portion of the floor panel. [Figure 9] FIG. 4 is a bottom view of the electric vehicle according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a vertical cross-sectional view of a main part of the electric vehicle shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] First Embodiment An electric vehicle V, the main parts of which are shown in Figures 1 and 2, is equipped with a battery 2 arranged on the upper side of a floor panel 1 at the front of the vehicle, which is on the left side in each figure, a rear motor 3 arranged on the lower side of the floor panel 1 at the rear of the vehicle, a harness 4 that electrically connects the battery 2 and the rear motor 3, and a first through hole 11 formed in the floor panel 1 at a position below a center console 5.

[0011] In the electric vehicle V, the harness 4 is arranged to run from the battery 2 through the first through-hole 11 to the rear motor 3. If the first through-hole 11 in the floor panel 1 were provided in the rear of the vehicle, a tunnel for the harness would need to be provided in the floor of the passenger compartment, which could impair foot access in the rear seats and raise the seating position of rear seat passengers. In contrast, the electric vehicle V has the first through-hole 11 arranged below the center console 5, thereby preventing impairing foot access and raising the seating position of rear seat passengers.

[0012] As shown in Fig. 3(B), the first through hole 11 in the electric vehicle V has a rectangular shape in which a width dimension W2 in the vehicle front-rear direction (left-right direction in Fig. 3) is larger than a width dimension W1 in the vehicle left-right direction (up-down direction in Fig. 3). That is, the first through hole 11 in the illustrated example has a rectangular shape with the longer sides in the vehicle front-rear direction and has rounded corners. Because this first through hole 11 is intended to pass the harness 4 through it, the width dimension W1 in the vehicle left-right direction is at least slightly larger than the diameter of the harness 4.

[0013] Furthermore, as shown in Figures 1 and 2, the floor panel 1 of the above-mentioned electric vehicle V has an inclined section S area in the middle of the vehicle in the fore-and-aft direction, which has an upward slope from the front of the vehicle to the rear of the vehicle, and a first through hole 11 is arranged in this inclined section S.

[0014] As shown in Figures 3(A) and 4, the electric vehicle V has a reinforcing member 6 disposed around a first through hole 11 in a floor panel 1, the reinforcing member 6 having a second through hole 12 corresponding to the first through hole 11, and the harness 4 passes through the first through hole 11 and the second through hole 12. The material of the reinforcing member 6 is not limited, but it is typically made of metal, and is formed by molding a metal plate into a flat three-dimensional shape.

[0015] The second through hole 12 of the reinforcing member 6 has a larger opening dimension than the first through hole 11 of the floor panel 1. The second through hole 12 in the illustrated example has a rectangular shape with an opening dimension slightly larger than that of the first through hole, and has rounded corners. That is, the second through hole 12 has a width dimension larger than the width dimension W1 of the first through hole 11 in the left-right direction of the vehicle, and a width dimension larger than the width dimension W2 of the first through hole 11 in the front-rear direction of the vehicle.

[0016] Here, for example, the first through hole 11 and the second through hole 12 have a size variation of ±1 mm and an assembly variation of ±5 mm, and the opening dimension of the second through hole 12 (the width dimension in the front, rear, left and right directions of the vehicle) is set to a parallel square sum of 5.2 mm or more to prevent edge interference between the harness 4 and the through holes 11, 12. Furthermore, edge interference of the harness 4 is prevented by ensuring a gap of 5 mm between the reinforcing member 6 and a grommet of the harness 4 described below.

[0017] 3(B), the electric vehicle V has a plurality of (two in the illustrated example) positioning recesses 11A formed around the first through-hole 11 in the floor panel 1. In contrast, the reinforcing member 6 has positioning holes 6H at positions corresponding to the plurality of positioning recesses 11A.

[0018] The positioning hole 6H is disposed on a side (long side) of the first through hole 11 along the vehicle longitudinal direction, preferably disposed in the vehicle lateral direction of the first through hole 11, and more preferably disposed approximately in the vehicle longitudinal center of the first through hole 11. Therefore, the two positioning recesses 11A, 11A in the floor panel 1 are also formed in the same positions relative to the first through hole 11 as the positioning holes 6H, 6H of the reinforcing member 6.

[0019] That is, in the illustrated example, the two positioning recesses 11A, 11A and the two positioning holes 6H, 6H are disposed approximately in the center of each of the pair of long sides of the first through hole 11, and are aligned in the left-right direction of the vehicle, which corresponds to the up-down direction in Fig. 3. Here, the positioning hole 6H does not necessarily have to be formed in the center of the long sides of the first through hole 11, and a certain degree of effect can be achieved if it is located in the central region of the long sides, so it is disposed approximately in the center.

[0020] In the electric vehicle V having the above configuration, the harness 4 is arranged so that it runs from the battery 2 arranged on the upper side of the floor panel 1 at the front of the vehicle, through a first through-hole 11 formed below the center console 5 to the underside of the floor panel 1, and then to the rear motor 3 arranged on the underside of the floor panel 1 at the rear of the vehicle. One end of the harness 4 is connected to the battery 2, and the other end is connected to the rear motor 3, so that power is supplied from the battery 2 to the rear motor 3.

[0021] In this way, the harness 4 is arranged on the underside of the floor of the passenger compartment of the electric vehicle V, and there is no need to provide a tunnel or the like for the harness in the floor, so that the foot space in the rear seats is easy to pass through and the livability is improved, and the harness 4 does not affect the arrangement of the mounted equipment or the livability of the passenger compartment.

[0022] As a result, the electric vehicle V described above has a structure in which power is supplied from a battery 2 located at the front of the vehicle to a rear motor 3 at the rear of the vehicle, and the power supply harness 4 can be well positioned while meeting conditions such as the location of onboard equipment and the livability of the vehicle interior.

[0023] 5(B), in an electric vehicle, if the opening dimension of the first through-hole 11 is small, the harness 4 passes through the first through-hole 11 perpendicularly or at a high angle, increasing the bending angle of the harness 4. In this case, the harness 4 protrudes significantly above and below the floor panel 1, increasing wasted space and potentially interfering with surrounding mounted equipment.

[0024] In contrast, in the above-described electric vehicle V, the first through-hole 11 has a rectangular shape in which the width dimension W2 in the vehicle front-rear direction is larger than the width dimension W1 in the vehicle left-right direction, so that the harness 4 passes through the first through-hole 11 obliquely at a low angle, as shown in Fig. 5(A). Therefore, in the above-described electric vehicle V, the bending angle of the harness 4 is small.

[0025] This prevents the harness 4 from protruding significantly above and below the floor panel 1 in the electric vehicle V, eliminating wasted space and preventing interference with surrounding mounted equipment. Furthermore, if the width dimension of the first through hole 11 in the vehicle longitudinal direction is increased while also increasing the width dimension of the first through hole 11 in the vehicle lateral direction to increase the overall size of the first through hole 11, the first through hole 11 becomes unnecessarily large in the vehicle lateral direction, which reduces the surface rigidity of the floor panel around the first through hole 11 in the vehicle lateral direction. In contrast, the electric vehicle V minimizes the size of the first through hole 11 to prevent a reduction in the surface rigidity of the floor panel 1 around the first through hole 11.

[0026] 6, the electric vehicle V uses a grommet 7 to hold the harness 4 passing through the first through hole 11. The grommet 7 has a main body 7A that abuts against the periphery of the underside of the first through hole 11, a holding portion 7B that is integrated with the center of the main body 7A, a locking portion 7C that protrudes upward from the main body 7A, and an engaging claw 7D that is provided at the tip of the locking portion 7C.

[0027] Before connecting the harness 4, the grommet 7 has the retaining portion 7B attached to the middle of the harness 4, the locking portion 7C inserted from the underside of the first through-hole 11, and the locking claw 7D elastically locking around the upper surface of the first through-hole 11. As a result, the grommet 7 is attached to the first through-hole 11 and holds the middle of the harness 4, allowing the harness 4 to be attached to the floor panel 1 with a simple operation.

[0028] Furthermore, in the case of the electric vehicle V described above, for example, in a side collision with a pole, the first through hole 11 will also deform as the floor panel 1 compresses and deforms. However, the use of the reinforcing member 6 having the second through hole 12 improves the surface rigidity of the area around the first through hole 11 in the floor panel 1. The use of the reinforcing member 6 described above also suppresses deformation of the first through hole 11, making it possible to avoid interference between the harness 4 and the edge of the first through hole 11.

[0029] Furthermore, in the electric vehicle V, a plurality of positioning recesses 11A are formed around the first through-hole 11 in the floor panel 1, and the reinforcing member 6 has positioning holes 6H at positions corresponding to the plurality of positioning recesses 11A. In the electric vehicle V, when fixing the reinforcing member 6 to the floor panel 1, as shown in FIG. 7, a positioning pin P provided on the work robot is passed through the positioning hole 6H in the reinforcing member 6, and the tip of the pin P is aligned with the positioning recess 11A. In this way, the reinforcing member 6 is accurately positioned on the floor panel 1, and then fixed to the floor panel 1 by spot welding or the like.

[0030] In this way, the electric vehicle V described above can reduce positional variations when assembling the reinforcing member 6 to the floor panel 1, and can prevent interference between the second through-hole 12 of the reinforcing member 6 and the harness 4.

[0031] Furthermore, in the above-described electric vehicle V, the first through hole 11 has a rectangular shape with a width dimension W2 in the vehicle front-rear direction larger than a width dimension W1 in the vehicle left-right direction, and the positioning hole 6H of the reinforcing member 6 is disposed on a side (long side) of the first through hole 11 along the vehicle front-rear direction. That is, in the above-described electric vehicle V, with regard to the surface rigidity around the first through hole 11 in the floor panel 1, the surface rigidity in the direction along the long side is lower than the surface rigidity in the direction along the short side. In contrast, in the above-described electric vehicle V, by providing the positioning hole 6H on the long side of the first through hole 11, the surface strength in the direction along the long side can be reduced.

[0032] Furthermore, in the case of the electric vehicle V, for example, in a side collision with a pole, the floor panel 1 is compressively deformed, causing wrinkles to form in the floor panel 1 in the approximately left-right direction of the vehicle. In this case, as shown in FIG. 8 , if wrinkles in the left-right direction of the vehicle occur across the first through hole 11, a force acts on the first through hole 11 in a direction that crushes it in the fore-and-aft direction of the vehicle. In response to this, the electric vehicle V has a positioning hole 6H for the reinforcing member 6 disposed in the left-right direction of the first through hole 11, thereby suppressing the amount of crushing of the first through hole 11.

[0033] Furthermore, in the above-mentioned electric vehicle V, if the above-mentioned wrinkles occur in the central part of the first through hole 11 in the fore-and-aft direction of the vehicle during a side collision with a pole, the force acting in the direction of crushing the harness 4 will be greatest. However, since the multiple positioning holes 6H are arranged in approximately the center of the first through hole 11 in the fore-and-aft direction of the vehicle, the force acting in the direction of crushing the harness 4 can be reduced.

[0034] Furthermore, in the above-mentioned electric vehicle V, even if the variation in parts and assembly of the first through hole 11 and the second through hole 12 is at its maximum, the opening dimension of the second through hole 12 of the reinforcing member 6 is larger than that of the first through hole 11, so that interference between the edge of the second through hole 12 and the harness 4 can be prevented.

[0035] Furthermore, the electric vehicle V has an inclined portion S on the floor panel 1, and the first through-hole 11 is disposed in this inclined portion S, so that the inclination angle of the harness 4 passing through the first through-hole 11 can be made smaller. This makes it possible to reduce the amount of protrusion of the harness 4 on the upper and lower surfaces of the floor panel 1 in the electric vehicle V, further reducing wasted space and more reliably preventing interference with mounted equipment.

[0036] The electric vehicle V described above can also be equipped with an engine at the front of the vehicle to drive the front wheels, in addition to the battery 2 and rear motor 3. In such an electric vehicle V, by providing an inclined portion S on the floor panel 1, the position of the floor panel 1 is raised at the rear of the vehicle, and the gasoline tank can be expanded upward accordingly to increase the tank capacity. Furthermore, if the tank capacity is kept constant, the length of the gasoline tank in the front-to-rear direction and the left-to-right direction of the vehicle can be made compact, which makes it possible to arrange other on-board equipment in the freed up space, thereby improving the layout flexibility of the on-board equipment.

[0037] Second Embodiment 9 and 10 are diagrams showing a second embodiment of an electric vehicle V according to the present invention. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0038] In the illustrated example, the electric vehicle V has a gasoline tank 21 and a main muffler 22 arranged side by side in the left-right direction of the vehicle on the underside of a floor panel 1 at the rear of the vehicle, and a heat shield plate 23 arranged between the floor panel 1 and the main muffler 22. The electric vehicle V has a harness 4 arranged between the floor panel 1 and the heat shield plate 23, and the height H1 of the gasoline tank 21 is greater than the height H2 of the main muffler 22.

[0039] The electric vehicle V having the above configuration can obtain the same effects as the first embodiment, and in addition, it is possible to eliminate the main muffler provided below the luggage compartment at the rear of the vehicle, thereby increasing the capacity of the luggage compartment. Furthermore, when arranging the harness 4, gasoline tank 21, and main muffler 22 on the underside of the floor panel 1, the electric vehicle V can achieve both a compact arrangement of the harness 4, gasoline tank 21, and main muffler 22 and an increase in the capacity of the gasoline tank 21 by arranging the harness 4 and main muffler 22 one above the other and arranging the gasoline tank 21 next to them. Furthermore, arranging the gasoline tank 21 inside a side member of the vehicle can also contribute to protecting the gasoline tank 21 against side collisions.

[0040] The configuration of the electric vehicle according to the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit of the present invention, and the configurations of the above-described embodiments can be combined. Furthermore, while the above-described embodiments illustrate the first and second through holes each having a rectangular shape, these through holes may also have an elliptical shape, for example. In this case, the long and short sides of the rectangle may be replaced by the long and short axes of the ellipse in the longitudinal and lateral directions of the vehicle. [Explanation of symbols]

[0041] 1 floor panel 2 Battery 3 rear motor 4 Harness 5. Center console 6 Reinforcement members 6H positioning hole 11 First through hole 11A Positioning recess 12 Second through hole 21 Gasoline Tank 22 Main muffler 23 Heat shield S slope part V Electric Vehicle

Claims

1. a battery disposed on an upper surface side of a floor panel in a front portion of the vehicle; a rear motor disposed on the underside of the floor panel at the rear of the vehicle; a harness that electrically connects the battery and the rear motor; a first through-hole formed in the floor panel at a position below the center console, The electric vehicle is characterized in that the harness is arranged so as to extend from the battery through the first through hole to the rear motor.

2. 2. The electric vehicle according to claim 1, wherein the first through-hole has a width dimension in the front-rear direction of the vehicle that is larger than a width dimension in the left-right direction of the vehicle.

3. a reinforcing member having a second through hole corresponding to the first through hole is disposed around the first through hole in the floor panel; The electric vehicle according to claim 1, wherein the harness passes through the first through-hole and the second through-hole.

4. A plurality of positioning recesses are formed around the first through hole in the floor panel, 4. The electric vehicle according to claim 3, wherein the reinforcing member has positioning holes at positions corresponding to the plurality of positioning recesses.

5. The first through hole has a width dimension in the vehicle front-rear direction larger than a width dimension in the vehicle left-right direction, and 5. The electric vehicle according to claim 4, wherein a plurality of the positioning holes are arranged on a side of the first through hole along the longitudinal direction of the vehicle.

6. 5. The electric vehicle according to claim 4, wherein a plurality of the positioning holes are arranged in the left-right direction of the vehicle with respect to the first through-hole.

7. 7. The electric vehicle according to claim 6, wherein the plurality of positioning holes are arranged at approximately the center of the first through hole in the longitudinal direction of the vehicle.

8. 4. The electric vehicle according to claim 3, wherein the second through-hole of the reinforcing member has an opening dimension larger than that of the first through-hole.

9. the floor panel has an inclined portion at the middle in the vehicle front-rear direction, the inclined portion having an upward slope from the front of the vehicle to the rear of the vehicle, The electric vehicle according to any one of claims 1 to 8, wherein the first through hole is disposed in the inclined portion.

10. 10. The electric vehicle according to claim 9, wherein a gasoline tank and a main muffler are arranged side by side in the left-right direction of the vehicle on the underside of the floor panel at the rear of the vehicle, a heat shield plate is arranged between the floor panel and the main muffler, the harness is arranged between the floor panel and the heat shield plate, and the height of the gasoline tank is greater than the height of the main muffler.

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