JP6287622B2 - vehicle - Google Patents

Description

  The present invention relates to an under cover that covers a battery pack disposed at a lower part of a vehicle body.

There is a vehicle in which a battery pack is disposed between a pair of left and right side members of a vehicle body and an under cover is provided to cover a lower portion of the battery pack.
In such a vehicle, in order to protect the battery pack from the convex portion on the road surface during traveling, protector members that protrude downward from the under cover are provided at the front portions of the pair of left and right side members, respectively. It has been proposed to protect the battery pack (see Patent Document 1).

Japanese Patent No. 4888311

However, since the pair of left and right protector members are made of steel, they are scratched by stepping stones during traveling, and rainwater and muddy water are applied to the protector members, so that rust is likely to be generated from the scratched parts. There is room for improvement in improving the durability of the members.
The pair of left and right protector members are relatively conspicuous because they are exposed at the lower part of the vehicle body, and there is room for improvement in terms of improving the aesthetic appearance.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle that is advantageous in improving the durability of the protector member and improving the appearance of the vehicle.

In order to achieve the above object, a first aspect of the present invention is directed to a battery pack provided between a pair of left and right side members, an under cover that covers a lower portion of the battery pack, a lower portion of the side member, and the battery. A protector member provided in front of the pack and projecting downward from the under cover, wherein the under cover is formed so as to cover a bottom surface and a side surface of the side member, and the protector A first opening for projecting the member is provided.
According to a second aspect of the present invention, the under cover includes a second opening located behind the first opening, and a wall portion formed at least behind the second opening and projecting upward. And is provided.
According to a third aspect of the present invention, the wall portion includes a first portion extending along the vehicle width direction at a location located behind the second opening, and the vehicle width direction of the first portion. And a second portion that is connected to an inner end and extends forward through the inner side in the vehicle width direction of each of the first opening and the second opening.
According to a fourth aspect of the present invention, the under cover includes a main body portion that covers a lower surface of the battery pack, and a peripheral wall portion that rises upward from the periphery of the main body portion, and the wall portion includes the main body portion. The outer end of the first portion in the vehicle width direction and the front end of the second portion are connected to the peripheral wall portion, and the first opening and the second opening are The circumference is surrounded by the peripheral wall portion and the wall portion.
The invention according to claim 5 is characterized in that a front end of the first opening is located above a rear end of the first opening.

According to the first aspect of the present invention, the under cover is formed so as to cover the bottom surface and the side surface of the side member, and the first opening for projecting the protector member is provided.
Accordingly, since the pair of left and right protector members are covered by the under cover, it is advantageous for protecting the pair of left and right protector members from stepping stones when the vehicle is running, and is advantageous for suppressing damage to the protector member and generation of rust. This is advantageous in improving the durability of the protector member.
Further, since the under cover also covers the bottom and side surfaces of the side member, the side member and the under cover are positioned on the side of the battery pack. Therefore, it is advantageous in suppressing rainwater from entering the battery pack from the side.
Further, it is advantageous for protecting the side member from a stepping stone during traveling of the vehicle, and is advantageous for improving the durability of the side member by suppressing the side member from being damaged or rusted.
Further, since the protector member is covered by the under cover, the area of the protector member exposed from the under cover can be reduced, and the protector member becomes less conspicuous, which is advantageous in improving the appearance of the vehicle.
According to the second aspect of the present invention, when the vehicle travels, rainwater that has entered from the first opening is prevented from moving rearward by the wall and is discharged from the second opening. It is more advantageous for draining the invading rainwater at an early stage and suppressing the occurrence of rust on the protector member, and further for improving the durability of the protector member.
According to the third aspect of the present invention, the rainwater that has entered from the first opening is reliably prevented from moving in the rear of the vehicle and inward in the vehicle width direction by the first portion and the second portion of the wall portion. This is advantageous in protecting the battery pack from rainwater entering the inside of the under cover.
According to the invention described in claim 4, it is advantageous in reliably discharging rainwater that has entered from the first opening to the outside of the under cover, and the occurrence of rust on the protector member can be further suppressed, and the durability of the protector member can be improved. This is more advantageous for improvement. Moreover, since the peripheral wall part which comprises an undercover is utilized, it becomes advantageous when aiming at the simplification and cost reduction of an undercover.
According to the fifth aspect of the invention, it is advantageous to protect the battery pack and improve the durability of the under cover.

It is the figure which looked at the vehicle concerning this embodiment from the lower part. It is a side view which shows the positional relationship of the vehicle which concerns on this Embodiment, and the convex part on a road surface. It is the perspective view which looked at the front part of the undercover of the vehicle concerning this embodiment from the lower part. It is the perspective view which looked at the location of the right side of the front part of the under cover of vehicles concerning this embodiment from the lower part. It is the perspective view which looked at the location of the left side of the front part of the undercover of the vehicle concerning this embodiment from the upper part. It is the perspective view which looked at the location of the right side of the front part of the undercover of vehicles concerning this embodiment from the upper part. It is sectional drawing which shows the front part and protect member of the undercover of the vehicle which concern on this Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the present embodiment, a case where the vehicle provided with the under cover is an electric vehicle using a motor as a drive source will be described.

As shown in FIGS. 1 and 2, the vehicle 10 includes a vehicle body 12, a traveling motor 14, a front wheel 16, a rear wheel 18, a battery pack 20, a protector member 22, and an under cover 24.
The vehicle body 12 includes a pair of left and right side members 26, a plurality of cross members (not shown), the side members 26, and a floor panel 28 disposed on the cross members.
The pair of left and right side members 26 extend in the vehicle front-rear direction of the vehicle 10 with an interval in the vehicle width direction of the vehicle 10.
As shown in FIG. 3, each side member 26 includes a bottom surface 2602 facing downward, an outer surface 2604 rising from the outside in the vehicle width direction of the bottom surface 2602, and an inner surface rising from the inside in the vehicle width direction of the bottom surface 2602. 2606.
The plurality of cross members are arranged at intervals in the vehicle front-rear direction, and extend in the vehicle width direction to connect the pair of left and right side members 26.
The floor panel 28 is disposed at the lower part of the vehicle body 12 and is made of a steel plate. The floor panel 28 extends in the vehicle longitudinal direction and the vehicle width direction, and both sides of the lower surface of the floor panel 28 in the vehicle width direction are joined to the pair of side members 26 by welding. Has been.

The traveling motor 14 is disposed at the rear of the vehicle body 12 and is driven by electric power supplied from the battery pack 20 to rotate the rear two wheels 18.
The battery pack 20 is disposed below the floor panel 28 and includes a traveling battery and a battery case 30 that houses the battery.
The battery includes a plurality of battery modules connected in series with each other and peripheral components for causing the battery modules to function. Each battery module includes a plurality of battery cells connected in series with each other.
The battery case 30 has a rectangular plate shape in plan view, and is arranged at the center in the vehicle width direction with the longitudinal direction matching the vehicle longitudinal direction of the vehicle 10.
The battery case 30 is disposed between the pair of side members 26 below the floor panel 28, and is attached to the pair of side members 26 via attachment members 32.
In the present embodiment, the attachment member 32 is a plurality of girder members 32A that extend in the vehicle width direction and are provided on the bottom wall of the battery case 30 at intervals in the vehicle front-rear direction.

As shown in FIGS. 3 to 7, the pair of left and right protector members 22 are for protecting the battery pack 20 from the convex portion 4 on the road surface 2 shown in FIG. 2, and in front of the pair of left and right side members 26. The portion is provided so as to protrude below the under cover 24.
More specifically, the pair of left and right protector members 22 are provided to project downward from the under cover 24 from the positions of the pair of left and right side members 26 in front of the battery pack 20.
Each protector member 22 is configured by bending a band-shaped steel material.
The protector member 22 is arranged with the longitudinal direction directed in the vehicle front-rear direction.
As shown in FIG. 5 and FIG. 6, the protector member 22 includes a pair of base portions 2202 that are located at both ends in the longitudinal direction and are attached to the side members 26 via bolts, and diagonally from opposite ends of the pair of base portions 2202. A pair of inclined portions 2204 extending downward and a tip portion 2206 connecting the pair of inclined portions 2204 are provided.
Bolt insertion holes 2208 are respectively formed in the base portion 2202, and the base portion 2202 is attached to the side member 26 through bolts inserted into the bolt insertion holes 2208.
Further, a mounting piece 2210 projects from the tip 2206, the end of the mounting piece 2210 is positioned above the under cover 24, and the under cover 24 is attached to the end of the mounting piece 2210 by a bolt. .
In the present embodiment, as shown in FIG. 1, the battery pack 20 is disposed such that the front portion is positioned between the longitudinal intermediate portions of the pair of left and right protector members 22.

As shown in FIGS. 1 and 2, the under cover 24 is provided so as to cover the lower part of the battery pack 20.
As shown in FIGS. 3 to 6, the under cover 24 includes a main body portion 34 facing downward, a peripheral wall portion 36 facing in a direction intersecting the vertical direction, a first opening 38, and a second opening. The opening 42 and the rainwater movement prevention wall 40 (wall part) are comprised.
As shown in FIG. 1, the main body 34 is configured to have a size and shape that covers the lower surface of the battery pack 20, and a plurality of bolt insertion holes 3402 are formed penetratingly spaced in the vehicle front-rear direction and the vehicle width direction. .
In the present embodiment, the main body 34 has a bottom surface 2602 of the side member 26 extending from a position located in front of the protector member 22 to the rear as shown in FIGS. 1, 3, and 4 in addition to the lower surface of the battery pack 20. It is provided so as to cover.

The peripheral wall portion 36 stands from the periphery of the main body portion 34 toward the lower surface of the floor panel 28.
As shown in FIG. 1, the peripheral wall portion 36 includes a front wall 3602 extending in the vehicle width direction in front of the battery pack, a rear wall 3604 extending in the vehicle width direction behind the battery pack, and the front walls 3602. And left and right wall portions 3606 and 3608 for connecting the rear wall 3604 and the rear wall 3604.
The front wall 3602 covers the front of the battery pack.
As shown in FIGS. 3 and 4, the front wall 3602 is provided with a notch 3610 formed corresponding to the pair of left and right side members 26, and each side member 26 is provided via the notch 3610. It extends in and out of the under cover 24.

As shown in FIGS. 1, 3, and 4, the left and right walls 3606 and 3608 are formed so as to cover the outer surface 2604 of the side member 26. Therefore, the side of the battery pack 20 is covered with a pair of left and right side members 26 and left and right wall portions 3606 and 3608.
Further, the rear wall 3604 covers the rear of the battery pack 20.
As a material constituting the under cover 24, various conventionally known synthetic resin materials such as polypropylene and nylon can be used. Further, the material constituting the under cover 24 may be a metal material, and the under cover 24 may be constituted by aluminum die casting or sheet metal.
The under cover 24 is attached to the battery pack 20 by the bolts inserted into the bolt insertion holes 3402 being screwed into the screw holes on the lower surface of the battery pack 20 and the screw holes of the plurality of beam members 32A.

As shown in FIG. 1, the first openings 38 are provided on both the left and right sides of the front portion of the main body 34.
The first opening 38 is provided so as to cover the base portion 2202 of the protector member 22 and to project the tip portion 2206 of the protector member 22.
In the present embodiment, as shown in FIG. 7, the front end 3802 of the first opening 38 is located above the rear end 3804 of the first opening 38.
As a result, the protector member 22 is exposed from the under cover 24 toward the front and the bottom of the vehicle so that the protector member 22 can perform its original function.
Further, the portion of the main body 34 that is located in front of the vehicle from the front end 3802 of the first opening 38 is an inclined surface 34A that gradually inclines upward toward the vehicle front, and the protector member 22 is directed toward the vehicle front. The protector member 22 is intended to exhibit its original function.

  As shown in FIGS. 3, 5, 6, and 7, the second opening 42 is provided on the rear side of the vehicle from the first opening 38. It is designed to be discharged from.

As shown in FIGS. 5, 6, and 7, the rainwater movement prevention wall 40 is formed at least behind the vehicle in the second opening 42 and projects upward.
In other words, the rainwater movement prevention wall 40 protrudes upward at the position of the main body portion 34 at the rear of the vehicle in the first opening 38, and rainwater entering the upper surface of the main body portion 34 from the first opening 38 to the rear of the vehicle. It is designed to prevent movement.
The rainwater movement prevention wall 40 has a first portion 40A and a second portion 40B.
The first portion 40A protrudes from the location of the main body portion 34 located behind the second opening 42 in the vehicle and extends along the vehicle width direction.
The second portion 40B is connected to the inner end in the vehicle width direction of the first portion 40A and protrudes from the position of the main body portion 34 located inside the first opening 38 and the second opening 42 in the vehicle width direction. It is installed and extends ahead of the vehicle.
In the present embodiment, the rainwater movement prevention wall 40 protrudes from the location of the main body portion 34 inside the peripheral wall portion 36, and the outer ends in the vehicle width direction of the first portion 40 </ b> A are the left and right wall portions of the peripheral wall portion 36. The front end of the second portion 40 </ b> B in front of the vehicle is connected to the front wall 3602 of the peripheral wall portion 36.
The first opening 38 and the second opening 42 are surrounded by the peripheral wall portion 36 and the rainwater movement prevention wall 40 around the entire periphery.

Next, the function and effect will be described.
In the present embodiment, the under cover 24 is formed so as to cover the bottom surface 2602 and the outer surface 2604 of the side member 26, and the first opening 38 for projecting the protector member 22 is provided.
Therefore, since the pair of left and right protector members 22 are covered by the under cover 24, it is advantageous in protecting the pair of left and right protector members 22 from stepping stones when the vehicle travels, and the protector member 22 is prevented from being damaged or rusted. This is advantageous in improving the durability of the protector member 22.
Further, since the under cover 24 also covers the bottom surface 2602 and the outer side surface 2604 of the side member 26, the side member 26 and the under cover 24 are positioned on the side of the battery pack 20. Therefore, it is advantageous in suppressing rainwater from entering the battery pack 20 from the side.
Further, it is advantageous in protecting the side member 26 from flying stones when the vehicle is running, and is advantageous in improving the durability of the side member 26 by suppressing the side member 26 from being damaged and generating rust.
Further, since the protector member 22 is covered by the under cover 24, the area of the protector member 22 exposed from the under cover 24 can be reduced, and the protector member 22 becomes less conspicuous, which is advantageous in improving the appearance of the vehicle.

Further, the under cover 24 is provided with a second opening 42 located behind the first opening 38 and a rainwater movement prevention wall 40 formed at least behind the second opening 42 and projecting upward. Provided.
Accordingly, when the vehicle travels, the rainwater that has entered from the first opening 38 is prevented from moving to the rear of the vehicle by the rainwater movement prevention wall 40 and is discharged from the second opening 42, so that it has entered the under cover 24. It becomes more advantageous in discharging rainwater early and suppressing the occurrence of rust on the protector member 22, and more advantageous in improving the durability of the protector member 22.

In addition, according to the present embodiment, the rainwater movement prevention wall 40 includes the first portion 40A that extends along the vehicle width direction at the position located behind the second opening 42 in the vehicle, and the first portion. A second portion 40B connected to the inner end in the vehicle width direction of 40A and extending forward of the vehicle through the inner side of each first opening 38 and each second opening 42 in the vehicle width direction. Yes.
Therefore, the rain water is reliably prevented from moving in the rear of the vehicle and inward in the vehicle width direction by the first portion 40A and the second portion 40B, and the battery pack 20 is protected from the rain water that has entered the under cover 24. This is advantageous.

Further, according to the present embodiment, the first opening 38 and the second opening 42 are surrounded by the peripheral wall portion 36 and the rainwater movement prevention wall 40 on the entire periphery thereof.
Therefore, it is advantageous for reliably discharging rainwater that has entered from the first opening 38 to the outside of the under cover 24, and it is possible to further suppress the occurrence of rust of the protector member 22, and to improve the durability of the protector member 22. Is more advantageous.
Moreover, since the peripheral wall part 36 which comprises the undercover 24 is utilized, it will become advantageous when aiming at the simplification of the undercover 24 and cost reduction.

  Further, according to the present embodiment, the front end 3802 of the first opening 38 is positioned above the rear end 3804 of the first opening 38, the protector member 22 is exposed toward the front of the vehicle, and the protector member 22 is exposed. Is designed to demonstrate its original function. Therefore, it is advantageous for protecting the battery pack 20 and improving the durability of the under cover 24.

  In the present embodiment, the case where the vehicle 10 provided with the protector member 22 and the under cover 24 is an electric vehicle has been described. However, the present invention is not limited to an electric vehicle and can be widely applied to any vehicle provided with the protector member 22 and the under cover 24. For example, the present invention can be applied to a hybrid vehicle or a plug-in hybrid vehicle. Widely applicable to electric vehicles.

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Car body 20 Battery pack 22 Protector member 2202 Base part 2204 Inclination part 2206 Tip part 24 Under cover 26 Side member 2602 Bottom face 2604 Outer side surface 28 Floor panel 34 Main body part 36 Peripheral wall part 3602 Front wall 3604 Left side wall 3606 Right side wall 3608 Rear wall 38 1st opening 3802 Front end 3804 Rear end 40 Rainwater movement prevention wall (wall part)
40A 1st part 40B 2nd part 42 2nd opening

Claims (5)

A battery pack provided between the pair of left and right side members;
An under cover for covering the lower part of the battery pack;
A protector member provided below the side member and in front of the battery pack and projecting below the under cover;
The under cover is formed so as to cover a bottom surface and a side surface of the side member, and a first opening for projecting the protector member is provided.
A vehicle characterized by that. The under cover is provided with a second opening located behind the first opening and a wall portion formed at least behind the second opening and projecting upward.
The vehicle according to claim 1. The wall portion is connected to a first portion extending along a vehicle width direction at a position located behind the second opening, and an inner end of the first portion in the vehicle width direction. Each of the second opening and the second opening extending forward through the inside in the vehicle width direction.
The vehicle according to claim 2. The under cover has a main body that covers the lower surface of the battery pack, and a peripheral wall that rises upward from the periphery of the main body.
The wall portion protrudes from the main body portion,
The outer end in the vehicle width direction of the first part and the front end of the second part are connected to the peripheral wall part,
The first opening and the second opening are surrounded by the peripheral wall portion and the wall portion on the entire periphery thereof,
The vehicle according to claim 3. A front end of the first opening is located above a rear end of the first opening;
The vehicle according to any one of claims 1 to 4, characterized in that:

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