JPH07112619A - Battery carrier fitting structure for electric vehicle - Google Patents

Abstract

PURPOSE:To reduce the body weight in the battery carrier fitted state and sufficiently secure the rigidity of a battery carrier and the rigidity of a body in the battery carrier fitted state. CONSTITUTION:Floor under members 28 are arranged between rockers 26 of a body 10, and the floor under members 28 are cut off for the zone of a battery carrier mount section. A cross member 34 is arranged between a pair of rockers 26, and the floor cross member 34 is cut off for the zone of the battery carrier mount section. A battery carrier 12 is provided with two battery carrier under members 14 and a battery carrier cross member 16, and these members connect the cutoff sections of the floor under members 28 and the cutoff section of the floor cross member 34 while the battery carrier 12 is assembled to the body 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body.

[0002]

2. Description of the Related Art Electric vehicles, which are pollution-free vehicles with no exhaust gas or noise, often use an AC motor or a DC motor and a battery as a power source, and the battery is usually housed in a battery carrier. The battery carrier is mounted under the floor of the vehicle body or the like.

As an example of the battery carrier mounting structure for this electric vehicle, there is Japanese Patent Application No. 4-267265 filed previously by the present applicant.

As shown in FIG. 10, in the battery carrier mounting structure of this electric vehicle, the battery carrier 17 is used.
The vehicle width direction both ends 170A of No. 0 are fixed to the rocker 172 of the vehicle body with the bolts 174 and the nuts 176, and the battery carrier 17 is attached to the floor under member 180 arranged on the lower surface of the floor pan 178 in the vehicle longitudinal direction.
The skeleton member 182 of 0 is fixed by the bolt 184 and the nut 186.

[0005]

However, in the electric vehicle equipped with the battery carrier 170, the weight of the battery 190 and the battery carrier 170 increases the weight of the vehicle body as compared with a general vehicle. Therefore, we want to reduce the weight of the vehicle body when installing the battery carrier as much as possible.
Since the one battery carrier 70 is fixed to the floor under-member 180, the strength of the floor under-member 180 needs to be a predetermined value or more.
It is difficult to reduce the weight of 80. Further, in order to ensure the rigidity of the battery carrier 170, the strength of the skeleton member 182 needs to be set to a predetermined value or more, and it is difficult to reduce the weight of the skeleton member 182. Further, when the battery carrier is attached, the floor under member 180 and the frame member 18
2 overlaps over a wide range, the weight of the floor under member 180 and the skeleton member 1 of the battery carrier 170.
Due to the weight of 82, the weight of the vehicle body when the battery carrier is mounted is significantly increased.

In consideration of the above facts, the present invention can reduce the weight of the vehicle body with the battery carrier attached, and at the same time, can sufficiently secure the rigidity of the battery carrier and the vehicle body rigidity with the battery carrier attached. An object is to provide a battery carrier mounting structure for an automobile.

[0007]

A battery carrier mounting structure for an electric vehicle according to a first aspect of the present invention is a battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body. State in which the skeleton of the battery carrier is formed and the skeleton of the battery carrier is formed and the skeleton of the battery carrier is formed. And a battery carrier skeleton forming member which is a part of the vehicle body lower skeleton forming member and which connects the cutout portions of the vehicle body lower skeleton forming member.

A battery carrier mounting structure for an electric vehicle according to a second aspect of the present invention is the battery carrier mounting structure for an electric vehicle according to the first aspect, wherein the end portions of the vehicle body lower frame forming members that face each other are opposed to each other. The connecting surface is an inclined surface whose facing dimension becomes narrower toward the upper side of the vehicle body, and both ends of the battery carrier frame forming member that abut on the connecting surface are inclined surfaces corresponding to these inclined surfaces. .

The battery carrier mounting structure for an electric vehicle according to a third aspect of the present invention is the battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body. And at least a pair of vehicle body lower skeleton-forming members that form a skeleton of the battery carrier mounting portion and a projecting portion that is detachably attached to the lower portion of the vehicle body and can be installed between the pair of vehicle body lower skeleton-forming members. And a battery carrier that is a part of the vehicle body lower skeleton forming member in place of the cutout portion of the vehicle body lower skeleton forming member when attached to the vehicle body.

[0010]

In the battery carrier mounting structure for an electric vehicle according to the first aspect of the present invention, the section of the battery carrier mounting portion of the vehicle body lower frame forming member is cut off when the battery carrier is not mounted on the vehicle body. When the battery carrier is attached to the vehicle body, the cutout portion of the vehicle body lower skeleton forming member, that is, the section of the battery carrier mounting portion is connected by the battery carrier skeleton forming member. Therefore, when the battery carrier is attached, unlike the conventional structure, the battery carrier skeleton-forming member and the vehicle body lower skeleton-forming member do not overlap over a wide area, and the weight of the vehicle body in the battery carrier-attached state can be reduced. it can.

Further, since the battery carrier frame forming member can sufficiently secure the rigidity of the battery carrier, when the battery carrier is attached and detached, the deformation and bending of the battery carrier are suppressed, and the work is facilitated. Become. In addition, transportation by battery carrier alone,
Even during temporary storage, deformation and bending of the battery carrier are suppressed, which is advantageous.

Further, since the battery carrier frame forming member connects the section of the battery carrier mounting portion of the vehicle body lower frame forming member, it is possible to sufficiently secure the vehicle body rigidity when the battery carrier is mounted.

In the battery carrier mounting structure for an electric vehicle according to the second aspect of the present invention, when the battery carrier is mounted on the vehicle body, the battery carrier is lifted by a jack or the like to join the both ends of the battery carrier frame forming member. When the surfaces are pressed against the joining surfaces of the end portions of the lower body skeleton forming member that face each other, the joining surfaces of the end portions of the lower body skeleton forming member that face each other become inclined surfaces whose facing dimension becomes narrower toward the upper side of the vehicle body. , The both ends of the battery carrier skeleton-forming member that come into contact with this coupling surface are inclined surfaces corresponding to these inclined surfaces,
The connecting surface of the battery carrier frame forming member slides on the connecting surface of the vehicle body lower frame forming member to align the battery carrier frame forming member and the vehicle body lower frame forming member. Therefore, for example, the respective mounting holes formed in the battery carrier frame forming member and the vehicle body lower frame forming member are aligned with each other, and the battery carrier frame forming member and the vehicle body lower frame forming member are easily coupled.

In the battery carrier mounting structure for an electric vehicle according to the third aspect of the present invention, the section of the battery carrier mounting portion of the vehicle body lower frame forming member is cut off when the battery carrier is not mounted on the vehicle body. When the battery carrier is attached to the vehicle body, the projecting portion of the battery carrier is installed between the pair of vehicle body lower frame forming members, the battery carrier is integrated with the pair of vehicle body lower frame forming members, and the vehicle body lower frame forming member is cut off. It becomes a part of the lower body skeleton forming member instead of the section. Therefore, with the battery carrier attached, like the conventional structure,
It is possible to reduce the weight of the vehicle body in the state where the battery carrier is attached, because the battery carrier and the member forming the lower frame of the vehicle body do not overlap over a wide range.

Further, by sufficiently securing the rigidity of the battery carrier, when the battery carrier is attached and detached, the deformation and bending of the battery carrier are suppressed, and the work is facilitated. In addition, when the battery carrier is transported as a single item or when temporarily stored, the battery carrier is deformed,
Bending is suppressed, which is advantageous.

Further, since the battery carrier reinforces the section of the battery carrier mounting portion of the vehicle body lower skeleton forming member, sufficient vehicle body rigidity can be ensured when the battery carrier is attached.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a battery carrier mounting structure for an electric vehicle according to the present invention will be described with reference to FIGS.

In the figure, an arrow FR indicates the front direction of the vehicle body, an arrow IN indicates the inner side direction of the vehicle, and an arrow UP indicates the upper direction of the vehicle body.

As shown in FIG. 1, a vehicle body 1 of an electric vehicle.
A rectangular dish-shaped battery carrier 12 is attached to the lower part of 0, and a plurality of batteries 11 (see FIG. 4) can be stored in the battery carrier 12.

The battery carrier 12 includes two battery carrier under-members 14 which are arranged in parallel along the longitudinal direction of the vehicle body and serve as a battery carrier frame forming member.
And a battery carrier cross member 16 as a battery carrier skeleton-forming member arranged along the vehicle width direction at a substantially central portion of the battery carrier 12 in the front-rear direction.

As shown in FIG. 4, the battery carrier 1
2 is made of a resin material, and the battery carrier under-member 14 is integrally molded. The cross-sectional shape of the battery carrier under-member 14 viewed from the longitudinal direction is a U-shape with the opening facing upward. There is.

Although not shown, similarly, the battery carrier cross member 16 is also integrally formed with the battery carrier 12, and the cross-sectional shape of the battery carrier cross member 16 as viewed in the longitudinal direction is such that the opening is directed upward. It is U-shaped.

As shown in FIG. 2, the front end portion 14A of the battery carrier undermember 14 is connected to the front wall 12A of the battery carrier 12 to the peripheral edge of a rectangular cutout 18 cut out from above.

Further, the battery carrier under member 1
4 has a base portion 14B in the vicinity of the front end portion 14A, and a mounting hole 20
Has been drilled. Further, on the side of the battery carrier undermember 14 opposite to the front end portion 14A through the assembling hole 20, there is formed a projecting portion 22 which bulges upward to reduce the groove depth of the battery carrier undermember 14. And the top surface 22A of the protruding portion 22 is
Is attached to the base portion 14B by an inclined surface 22B which is inclined in the vehicle body mounting direction, that is, diagonally rearward of the vehicle body toward the upper side of the vehicle body. An assembling hole 24 is formed in this inclined surface 22B.

As shown in FIG. 4, the battery carrier 1
In the vicinity of both end portions in the vehicle width direction of the vehicle body 2, two side wall portions 12B are projected in an inverted V shape, and flanges that are located at a high position via a step portion 42 are provided at both end portions of the battery carrier 12 in the vehicle width direction. The flange 13 is provided with a plurality of mounting holes 15 at predetermined intervals in the front-rear direction.

The vicinity of the rear end portion 14C of the battery carrier undermember 14 shown in FIG. 1 is also symmetrical with respect to the vicinity of the front end portion 14A of the battery carrier undermember 14 and the longitudinal center cutting line of the battery carrier undermember 14. Also, the vicinity of both end portions 16A of the battery carrier cross member 16 is horizontally 90 ° in the vicinity of the front end portion 14A of the battery carrier under member 14.
It has a rotated structure.

A pair of rockers 26 are arranged at the lower ends of the vehicle body 10 in the vehicle width direction along the longitudinal direction of the vehicle body.
Between these rockers 26, two floor under-members 28, which serve as a vehicle body lower skeleton forming member, are arranged at predetermined intervals in the vehicle width direction. These floor under-members 28 are cut away from the battery carrier mounting portion, that is, one end portion 28A coupled to a pair of front side members 30 arranged along the vehicle front-rear direction at the vehicle front portion. The other end 28B connected to the rear floor cross member 32 arranged along the vehicle width direction at the rear part of the vehicle body is lacked, and these are opposed to each other across the battery carrier mounting part. The end 28B of the floor undermember 28 is symmetrical with the end 28A in the vehicle front-rear direction.

A floor cross member 34 as a vehicle body lower skeleton forming member is disposed between the pair of rockers 26 at the center of the vehicle body 10 in the front-rear direction. The floor cross member 34 has a battery carrier mounting section cut off, that is, a space between both ends 34A in the vehicle width direction fixed to the pair of rockers 16 is lacking, and these are opposed to each other with the battery carrier mounting section sandwiched therebetween. is doing.

As shown in FIG. 3, the sectional shape of the floor under member 28 as viewed in the longitudinal direction is a U-shape with the opening facing upward. A horizontal flange 28C is formed on the periphery of the opening of the floor under member 28 toward the outside of the opening. As shown in FIG. 5, the horizontal flange 28C is fixed to the lower surface 43A of the floor pan 43. Further, the end surface of the end portion 28A of the floor under member 28 and the end surface of the end portion 28B are each an inclined surface 28D whose facing dimension becomes narrower toward the upper side of the vehicle body. In addition,
The cross-sectional shape of the floor cross member 34 when viewed in the longitudinal direction is also U-shaped with the opening facing upward, and the horizontal flange at the peripheral edge of the opening is fixed to the lower surface 43A of the floor pan 43. Further, the end surfaces of the facing end portions 34A of the floor cross member 34 are inclined surfaces whose facing dimension becomes narrower toward the upper side of the vehicle body.

As shown in FIG. 5, the inclined surface 22D of the battery carrier undermember 14 contacts the inclined surface 28D of the floor under-member 28 when the battery carrier 12 is attached to the vehicle body 10. . Further, an assembling hole 29 is formed in the inclined surface 28D of the floor under member 28, and an assembling hole 31 is formed in the base portion 28E of the floor under member 28, and these assembling holes 31 are formed in the floor under member 28. Weld nuts 44 and 46 are fixed coaxially with the assembling holes 29 and 31.

When the positioning of the battery carrier under member 14 and the floor under member 28 is completed, that is, the base portion 14B of the battery carrier under member 14 is completed.
Contact the base portion 28E of the floor under-member 28, and the base portion of the battery carrier cross member 16 contacts the base portion of the floor cross member 34. The nuts 50 and 48 are coaxial with the assembling holes 20 and 24 of the member 14, respectively. In this state, the nuts 50 and 48 are inserted into the assembling holes 20 and 24 of the battery carrier under member 14 and screwed into the weld nuts 44 and 46. Thus, the battery carrier 12 can be attached to the vehicle body 10.

Further, as shown in FIG. 4, mounting holes 27 are formed in the bottom portion 26A of the rocker 26 at a predetermined interval in the vehicle body direction. The hole 27 and the mounting hole 15 of the battery carrier 12 are aligned with each other. Also Rocka 2
A weld nut 54 is fixed to the upper surface of the bottom portion 26A of No. 6 coaxially with the mounting holes 27. Therefore, by inserting the bolt 52 into the mounting hole 15 of the horizontal flange 13 of the battery carrier 12 from below and screwing the bolt 52 into the weld nut 54 through the mounting hole 27, the battery carrier 1
2 can be attached to the vehicle body 10.

Next, the operation of the first embodiment will be described. In the battery carrier mounting structure for the electric vehicle according to the present embodiment, the section of the battery carrier mounting portion of the floor under member 28 and the floor cross member 34 is cut off when the battery carrier 12 is not mounted on the vehicle body 10. When the battery carrier 12 is attached to the vehicle body 10, the cutout portion of the floor under member 28 and the cutout portion of the floor cross member 34, that is, the section of the battery carrier mounting portion are connected by the battery carrier undermember 14 and the battery carrier crossmember 16. To be done.

Therefore, when the battery carrier is mounted, unlike the conventional structure, the battery carrier frame forming member and the vehicle body lower frame forming member do not overlap with each other, and the vehicle body weight in the battery carrier mounted state can be reduced. .

Further, the battery carrier under member 1
Since the rigidity of the battery carrier can be sufficiently ensured by 4 and the battery carrier cross member 16, when the battery carrier is attached and detached, the deformation and bending of the battery carrier are suppressed, and the work is facilitated. In addition, the battery carrier is advantageously prevented from being deformed or bent even when it is transported as a single battery carrier or temporarily stored.

Further, the battery carrier under member 1
Since the cutout portion of the floor under member 28 and the cutout portion of the floor cross member 34 are connected by 4 and the battery carrier cross member 16, it is possible to sufficiently secure the vehicle body rigidity when the battery carrier is attached.

Further, in the battery carrier mounting structure for the electric vehicle of the first embodiment, when the battery carrier 12 is mounted on the vehicle body 10, the battery carrier 12 is lifted by a jack or the like and the battery carrier under member 14 is pushed.
Inclined surface 22B and battery carrier cross member 16
Of the floor under member 28 and the inclined surface of the floor cross member 34, the inclined surface 22B of the battery carrier under member 14 and the inclined surface of the battery carrier cross member 16 are moved to the floor under member 28. Of the battery carrier under member 14 and the battery carrier cross member 16 by sliding on the inclined surface 28D of the battery carrier and the inclined surface of the floor cross member 34.
And the floor under member 28 and the floor cross member 3
Positioning with 4 is performed. That is, the battery carrier 12 can be automatically positioned with respect to the vehicle body 10.

Therefore, the assembling holes 29 and 30 of the floor under member 28 and the battery carrier under member 1 are assembled.
4, the assembling holes 20 and 24 are coaxial, and similarly, the assembling hole of the floor cross member 34 and the assembling hole of the battery carrier cross member 16 are also coaxial. Further, since the mounting hole 27 of the rocker 26 and the mounting hole 15 of the battery carrier 12 are coaxial, the bolt 48,
It becomes easy to attach the battery carrier 12 to the vehicle body 10 by means of 50 and 52.

In the first embodiment, both ends 16A of the battery carrier cross member 16 are connected to both ends 34A of the floor cross member 34 in the vehicle width direction. However, instead of this, the floor cross member 34 is used. , And both ends 16A of the battery carrier cross member 16 are eliminated.
May be directly attached to the inclined surface formed on the bottom portion 26A of the rocker 26.

In the first embodiment, the battery carrier 12 is made of a resin material, and the battery carrier under member 14 and the battery carrier cross member 16 are integrally molded. However, the battery carrier 12 is made of metal. Battery carrier under member 1 may be configured.
4, the battery carrier cross member 16 may be provided separately.

Next, a second embodiment of the battery carrier mounting structure for an electric vehicle according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG.
The battery carrier 62 of the second embodiment has a rectangular battery carrier body 63 that is rectangular in a plan view, and a rectangular shape in a plan view that protrudes toward the front of the vehicle body at the center of the front portion of the battery carrier body 63 in the vehicle width direction. And a projecting portion 64. A junction box 65 is housed in the protruding portion 64, and the junction box 65 electrically connects the battery 11 in which the battery carrier main body 63 is mounted to a control device, a drive device, etc. mounted on the vehicle body side. A relay or the like is provided.

As shown in FIG. 7, the battery carrier 6
2 includes a battery carrier under 66 that constitutes a lower part of the battery carrier 62, and a battery carrier upper 68 that constitutes an upper part of the battery carrier 62.
The battery carrier under 66 has a dish shape, and the battery carrier upper 68 has a lid shape. In addition, the battery carrier upper 68 is the battery carrier under 6
It can be attached to and detached from the 6.

As shown in FIG. 6, connecting portions 70 extend from the side portions 63A, 63B of the battery carrier main body 63 toward the outer side in the vehicle width direction.
Are attached to the lower surfaces of the pair of rockers 26 by bolts 72 and nuts (not shown).

As shown in FIG. 8, the side portion 6 of the protrusion 64 is
From 4A and 64B, the connecting portion 74 is directed outward in the vehicle width direction.
Of the floor under members 28 by means of the bolts 72 and the nuts 79.
Are attached to the lower surface of each.

As shown in FIG. 7, the front portion 6 of the protrusion 64 is
From 4C, connecting portions 76 extend toward the front side of the vehicle body, and these connecting portions 76 are attached to the lower surface of the floor cross member 78 by bolts 72 and nuts 79, respectively. The floor cross member 78 and the dash panel 80 form a closed cross-section structure 82 extending in the vehicle width direction.

Next, the operation of the second embodiment will be described. In the battery carrier mounting structure for the electric vehicle of the second embodiment, the section of the battery carrier mounting portion of the pair of floor under-members 28 is cut off when the battery carrier 62 is not mounted on the vehicle body, and the battery carrier is mounted on the vehicle body. When 62 is attached, the projecting portion 64 of the battery carrier 62 is installed between the pair of floor under members 28,
The battery carrier 62 includes a pair of floor under members 28.
And the cutout portion of the floor under-member 28 is replaced with a part of the floor under-member 28, that is, a portion extending rearward of the vehicle body.

Therefore, when the battery carrier is attached, unlike the conventional structure, the battery carrier and the floor under-member 28 do not overlap with each other over a wide range, and the weight of the vehicle body when the battery carrier is attached can be reduced. .

Further, by sufficiently ensuring the rigidity of the battery carrier 62, when the battery carrier 62 is attached and detached, the deformation and bending of the battery carrier 62 are suppressed, and the work is facilitated. In addition, the battery carrier 62 is advantageously prevented from being deformed or bent even when the battery carrier 62 is transported as a single item or temporarily stored.

Further, since the battery carrier 62 reinforces the section of the battery carrier mounting portion of the pair of floor under-members 28, it is possible to sufficiently secure the vehicle body rigidity when the battery carrier is mounted.

In the second embodiment, the projecting portion 64 is provided only on the front portion of the battery carrier body 63 of the battery carrier 62 and is installed between the floor under members 28.
Instead of this, as shown in FIG. 9, a protrusion 64 is provided at the rear of the battery carrier body 63, and the protrusion 64
May be installed between the end portions 28B of the pair of floor under members 28. Further, the protrusions 64 may be provided on both sides of the battery carrier body 63, and the protrusions 64 may be provided between the pair of floor cross members 34.

In addition to the junction box 65, an auxiliary device such as a DC / DC converter or the battery itself may be arranged in the projecting portion 64 at a plurality of locations.

[0053]

The battery carrier mounting structure for an electric vehicle according to the first aspect of the present invention is a battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body, the battery carrier being detachably mounted on a lower portion of the vehicle body. And a lower body skeleton forming member that forms a lower skeleton of the vehicle body and a section of the battery carrier mounting portion is cut off, and a lower body skeleton forming member that forms the skeleton of the battery carrier and is attached to the vehicle body. Since the battery carrier skeleton forming member which is a part of the vehicle body lower skeleton forming member is connected to the cutout portion, the weight of the vehicle body in the battery carrier attached state can be reduced.

Further, since the battery carrier frame forming member can sufficiently secure the rigidity of the battery carrier, when the battery carrier is attached and detached, the deformation and bending of the battery carrier are suppressed, and the work is facilitated. Become. In addition, transportation by battery carrier alone,
It has an excellent effect that deformation and bending of the battery carrier are suppressed even during temporary storage, which is advantageous.

Further, since the battery carrier skeleton forming member connects the section of the battery carrier mounting portion of the vehicle body lower skeleton forming member, it is possible to sufficiently secure the vehicle body rigidity when the battery carrier is attached. Have.

In the battery carrier mounting structure for an electric vehicle according to a second aspect of the present invention, the connecting surfaces of the end portions of the vehicle lower frame forming members facing each other are inclined surfaces whose facing dimension becomes narrower toward the upper side of the vehicle body. Since both ends of the battery carrier skeleton-forming member that are in contact with the coupling surface are inclined surfaces corresponding to these inclined surfaces, it is possible to easily attach the battery carrier to the vehicle body. Have.

The battery carrier mounting structure for an electric vehicle according to a third aspect of the present invention is the battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body. And at least a pair of vehicle body lower skeleton-forming members that form a skeleton of the battery carrier mounting portion and a projecting portion that is detachably attached to the vehicle body lower portion and that can be installed between the pair of vehicle body lower skeleton forming members. Since it has a structure in which the battery carrier, which is a part of the vehicle body lower skeleton forming member in place of the cutout portion of the vehicle body lower skeleton forming member when attached to the vehicle body, is configured, the vehicle body weight in the battery carrier attached state is reduced. It has an excellent effect of being able to.

Further, by sufficiently ensuring the rigidity of the battery carrier, when the battery carrier is attached or detached, the deformation and bending of the battery carrier are suppressed, and the work is facilitated. In addition, when the battery carrier is transported as a single item or when temporarily stored, the battery carrier is deformed,
This has an excellent effect of suppressing bending and the like, which is advantageous.

Further, since the battery carrier reinforces the section of the battery carrier mounting portion of the lower body skeleton forming member, there is an excellent effect that the rigidity of the vehicle body when the battery carrier is attached can be sufficiently secured.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a battery carrier mounting structure for an electric vehicle according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the coupling portion on the battery carrier side of the battery carrier mounting structure for the electric vehicle according to the first exemplary embodiment of the present invention, as viewed from the diagonally upper front side of the vehicle body.

FIG. 3 is a perspective view showing a joint portion on the vehicle body side of the battery carrier mounting structure for an electric vehicle according to the first exemplary embodiment of the present invention, as viewed from the diagonally upper front side of the vehicle body.

FIG. 4 is a sectional view of a battery carrier mounting structure for an electric vehicle according to a first exemplary embodiment of the present invention, as seen from the front of the vehicle body.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is a schematic bottom view showing the battery carrier mounting structure of the electric vehicle according to the second exemplary embodiment of the present invention.

7 is a sectional view taken along line 7-7 of FIG.

8 is a sectional view taken along line 8-8 of FIG.

FIG. 9 is a schematic bottom view showing a battery carrier mounting structure for an electric vehicle according to a modification of the second embodiment of the present invention.

FIG. 10 is a sectional view of a battery carrier mounting structure for an electric vehicle according to a conventional example, as viewed from the front of the vehicle body.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 vehicle body 11 battery 12 battery carrier 14 battery carrier under member (battery carrier skeleton forming member) 16 battery carrier cross member (battery carrier skeleton forming member) 22 protrusion 22B inclined surface 28 floor under member (body lower part skeleton forming member) 28D inclination Surface 34 Floor cross member (body lower frame forming member) 62 Battery carrier 63 Battery carrier body 64 Projection

Claims (3)

[Claims] 1. A battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted on a lower portion of a vehicle body, wherein a battery carrier detachably mounted on a lower portion of the vehicle body, a skeleton of the lower portion of the vehicle body and a section of the battery carrier mounting portion are formed. A part of the vehicle body lower skeleton forming member is formed by connecting the cut-out portion of the vehicle body lower skeleton forming member with the cut vehicle lower body skeleton forming member to form a skeleton of the battery carrier and with the battery carrier attached to the vehicle body. A battery carrier mounting structure for an electric vehicle, comprising: 2. The connecting surfaces of the end portions of the lower body skeleton forming member facing each other are inclined surfaces whose facing dimension becomes narrower toward the upper side of the vehicle body, and both end portions of the battery carrier skeleton forming member contacting the connecting surfaces respectively. The battery carrier mounting structure for an electric vehicle according to claim 1, wherein the inclined surfaces correspond to these inclined surfaces. 3. A battery carrier mounting structure for an electric vehicle in which a battery carrier is mounted to a lower portion of a vehicle body, wherein at least a section of the battery carrier mounting portion is cut out and is provided in a lower portion of the vehicle body substantially parallel to each other to form a skeleton of the lower portion of the vehicle body. A pair of lower body skeleton forming members,
The vehicle body lower skeleton forming member, which is detachably attached to the lower portion of the vehicle body, has a projecting portion that can be installed between the pair of vehicle body lower skeleton forming members, and is attached to the vehicle body in place of the cutout portion of the vehicle body lower skeleton forming member. A battery carrier mounting structure for an electric vehicle, comprising: