JP6795414B2 - Auxiliary battery arrangement structure for automobiles - Google Patents

Description

The present invention relates to an auxiliary battery arrangement structure of an automobile, and more particularly to a structure in which the auxiliary battery is arranged outside the side member in the left-right direction of the vehicle.

The auxiliary battery arrangement structure of the conventional automobile will be described with reference to the vehicle body rear structure of the electric vehicle shown in FIG. In the vehicle body rear structure of the electric vehicle, a side member 11 extending in the front-rear direction of the vehicle, a battery case 21 supported by the side member 11, a rear suspension arm 31 supported by the side member 11, and the side member 11 are provided. The common bracket 40 is provided. The common bracket 40 has a battery mount portion 42 that supports the battery case 21 and a suspension mount portion 43 that supports the rear suspension arm 31. As a result, when an impact load is input due to a rear collision, it is possible to suppress the concentration of the impact load on the side member and prevent the side member from being deformed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-218910

However, the vehicle body rear structure of the above-mentioned electric vehicle has the following points to be improved. The battery case 21 contains a battery pack used as a drive battery that is a power source for a traveling electric motor mounted on an electric vehicle. That is, a separate auxiliary battery must be placed to power the air conditioner, audio, and other accessories.

On the other hand, in vehicles such as compact cars and light vehicles, where the space between side members and the vehicle height direction is insufficient, it is possible to effectively utilize the space while maintaining the fixing of the auxiliary battery. There is a point to be improved that it is difficult. For example, by arranging the auxiliary battery in the luggage compartment, the auxiliary battery can be stably fixed, but the luggage compartment becomes narrower by the amount of the auxiliary battery arranged.

Further, when a force acts from the rear of the vehicle as in a rear-end collision, the side members arranged on the left and right sides of the vehicle receive the force. Therefore, there is another problem to be solved that the side members are greatly deformed with respect to the force from the rear of the vehicle.

Therefore, an object of the present invention is to provide an auxiliary battery arrangement structure for an automobile, which improves the strength of the vehicle body against a force acting from the rear of the vehicle while effectively utilizing the space inside the vehicle.

The means for solving the problems in the present invention and the effects of the invention are shown below.

Auxiliary battery arrangement structure for an automobile according to the present invention, a side member, and an inner panel, the auxiliary battery of a motor vehicle having said inner panel and the floor panel disposed along the upper end surface of each of said side members, the an auxiliary battery arrangement that Ru is arranged above the floor panel, which is connected at the lower surface of the floor panel to the side of the vehicle outer side of the inner panel Rutotomoni vehicle with respect to the wheel house rear wheel of the motor vehicle On the first support portion located on the rear side, the second support portion connected to the vehicle inner side surface of the inner panel and the vehicle outer side surface of the side member on the lower surface side of the floor panel, and the upper surface of the floor panel. An auxiliary battery holding portion for holding the auxiliary battery , which is connected and arranged so as to connect the upper end surface of the first support portion and the upper end surface of the second support portion via the floor panel. Have.

In this way, by connecting to the wheel house of the rear wheels and arranging the first support portion located on the rear side of the vehicle with respect to the wheel house, the auxiliary battery is placed in the space behind the vehicle with respect to the wheel house of the rear wheels. Can be placed. Since the space behind the vehicle with respect to the rear wheel house does not function as a so-called luggage compartment, the space inside the vehicle can be effectively utilized.

Further, when a force is applied to the vehicle from the rear side, the force received by the side member is dispersed toward the outside of the vehicle by using the second support portion and the auxiliary battery holding portion, and is transmitted to the wheel house. Since the wheel house has high strength, as a result, the force F acting from the rear side of the vehicle can be transmitted not only to the side members but also to the wheel house, so that the force acting from the rear side of the vehicle can be transmitted to the side members. Since it can be transmitted to the wheel house in a distributed manner instead of acting intensively only on the side members, the deformation of the side members can be reduced, and as a result, the strength of the vehicle body can be improved.

It is a figure which shows the automobile AM which mounts the auxiliary battery arrangement structure 100 of the automobile which concerns on one Embodiment which concerns on this invention. FIG. 1 is a diagram showing a state in which the floor panel FP is transparently described in FIG. It is a figure which shows the state which the auxiliary battery arrangement structure 100 was seen from the rear side of a vehicle. It is a figure which shows the state which the auxiliary battery arrangement structure 100 shown in FIG. 2 is seen from the upper side of a vehicle. It is a figure which shows the conventional auxiliary battery arrangement structure.

Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

The automobile auxiliary battery arrangement structure 100 (hereinafter referred to as an auxiliary battery arrangement structure 100) according to the present invention arranges an auxiliary battery in an automobile and improves the strength against a force acting in the vicinity of the auxiliary battery arrangement. Is. Here, the auxiliary battery of an automobile means a battery for sharing electric power with an air conditioner, audio, and other accessories, unlike a drive battery used for driving. As an automobile equipped with a drive battery, for example, there is a hybrid type automobile.

Configuration of First Automobile AM The configuration of the automobile AM on which the auxiliary battery arrangement structure 100 is formed will be described with reference to FIGS. 1 to 4. A perspective view of the vicinity of the rear wheels of the vehicle on which the auxiliary battery arrangement structure 100 is mounted is shown in FIG. 1, a state in which the floor panel FP is transparently described in FIG. 1 is shown in FIG. 2, and the auxiliary battery arrangement structure 100 is shown on the rear side of the vehicle. The state of the auxiliary battery arrangement structure 100 shown in FIG. 2 is shown in FIG. 3, and the state of the auxiliary battery arrangement structure 100 shown in FIG. 2 is shown in FIG. 4, respectively. In each figure, the auxiliary battery BT mounted on the auxiliary battery holding unit 105 and the floor panel FP transparently described are shown by dotted lines.

As shown in FIG. 1, side members SM are arranged inside the vehicle with respect to the wheel house HH along the vehicle front-rear direction. The floor panel FP is arranged along the upper end surface of the side member SM. As shown in FIG. 2, the inner panel IP is connected toward the rear of the vehicle along the inner end surface of the wheel house HH of the left rear wheel of the automobile AM. The floor panel FP is arranged along the upper end surface of the inner panel IP.

Configuration of Second Auxiliary Battery Arrangement Structure 100 As shown in FIG. 2, the auxiliary battery arrangement structure 100 is formed on the rear side of the vehicle with respect to the wheel house HH of the left rear wheel. The auxiliary battery arrangement structure 100 includes a first support portion 101, a second support portion 103, and an auxiliary battery holding portion 105.

The first support portion 101 has a tubular shape having a rectangular cross section. The first support portion 101 is located on the rear side of the vehicle with respect to the wheel house HH. Further, as shown in FIG. 3, in the first support portion 101, the surface P101a on the vehicle center side is connected to the surface P1 on the outer side of the vehicle of the inner panel IP. That is, the first support portion 101 is arranged outside the vehicle with respect to the inner panel IP. The first support portion 101 is connected to the wheel house HH via the inner panel IP.

Returning to FIG. 2, the second support portion 103 has a box shape. Further, as shown in FIG. 3, in the second support portion 103, the surface P103a inside the vehicle is connected to the surface P3 inside the vehicle of the inner panel IP. Further, in the second support portion 103, the surface P103b inside the vehicle is connected to the surface P5 inside the vehicle of the side member SM. In other words, the second supporting portion 103, to the inner panel IP, the vehicle inner side, also, the vehicle exterior side of the side member SM, are arranged.

Returning to FIG. 1, the auxiliary battery holding portion 105 has a box shape including the lower part of the auxiliary battery BT (dotted line). As shown in FIG. 3, the auxiliary battery holding portion 105 is arranged on the upper side of the vehicle with respect to the first support portion 101 and the second support portion 103. Further, in the auxiliary battery holding portion 105, the lower surface P105 of the vehicle is connected to the upper end surface P101c of the first support portion 101 and to the upper end surface P13c of the second support portion 103 via the floor panel FP, respectively. Will be done. That is, the auxiliary battery holding portion 105 is arranged so as to connect the first support portion 101 and the second support portion 103.

The auxiliary battery holding unit 105 holds the auxiliary battery BT on the outside of the vehicle from the inner panel IP. That is, the auxiliary battery BT is arranged so as to be supported from below by the first support portion 101 on the outside of the vehicle with respect to the inner panel IP.

Action of the third auxiliary battery arrangement structure 100 As shown in FIG. 2, by using the auxiliary battery arrangement structure 100, the auxiliary battery BT is placed on the floor panel FP on the rear side of the vehicle with respect to the wheel house HH and on the inner panel IP. On the other hand, it can be arranged in the space outside the vehicle. As a result, the luggage compartment space inside the vehicle can be used more widely than the inner panel IP as before, that is, the space inside the vehicle can be effectively utilized.

Here, assuming that the auxiliary battery BT is arranged in the space behind the vehicle with respect to the wheel house HH and outside the vehicle with respect to the inner panel IP without using the first support portion 101, the inner panel IP of the floor panel FP On the other hand, the area outside the vehicle becomes a cantilever with respect to the inner panel IP. Therefore, when the heavy auxiliary battery BT is placed on the floor panel FP, the floor panel FP that becomes the cantilever vibrates and the auxiliary battery is used. The BT is loosened. On the other hand, by arranging the first support portion 101, the auxiliary battery BT is supported from the lower side, and the floor panel FP serving as the cantilever is also supported from the lower side, so that the vibration of the floor panel FP is reduced. It can, and thus, keep the auxiliary battery BT fixed. The auxiliary battery holding portion 105 is connected to the second support portion 103 via the floor panel FP inside the vehicle with respect to the inner panel IP. As a result, since the floor panel FP is sandwiched and held by the auxiliary battery holding portion 105 and the second support portion 103, the vibration of the floor panel FP can be further reduced.

Further, as shown in FIG. 4, when a force F acts on the vehicle from the rear side as in a rear-end collision, the force F acts on the side member SM and the side member SM is deformed. Further, the force F is transmitted from the side member SM in the direction of the arrow a1 toward the second support portion 103 and the auxiliary battery holding portion 105. That is, a part of the force F is transmitted toward the outside of the vehicle by the second support portion 103 branched from the side member SM, and further transmitted to the wheel house HH along the arrow a3 direction via the inner panel IP. .. Since the wheel house HH has high strength, as a result, the force F acting from the rear side of the vehicle can be transmitted not only to the side member SM but also to the wheel house HH. That is, the force acting from the rear side of the vehicle can be applied not only to the side member SM but also to other members such as the wheel house HH in a distributed manner, so that the side member SM is deformed. Can be reduced. That is, the strength of the vehicle body can be improved.

In this way, by using the auxiliary battery arrangement structure 100, the auxiliary battery BT is arranged in the space on the floor panel FP on the rear side of the vehicle with respect to the wheel house HH and on the outside of the vehicle with respect to the inner panel IP. The space can be widely used as before, the space inside the vehicle can be effectively utilized, and the deformation of the side member SM can be reduced and the strength of the vehicle body can be improved with respect to the force acting from the rear side of the vehicle.

[Other Embodiments]
(1) Formation position of auxiliary battery arrangement structure 100: The auxiliary battery arrangement structure 100 in the above-described first embodiment is formed on the rear side of the vehicle with respect to the wheel house HH of the left rear wheel. However, it may be formed on the rear side of the vehicle with respect to the wheel house of the right rear wheel.

100 Auxiliary battery arrangement structure 101 1st support part P101c Upper end surface 103 2nd support part P103c Upper end surface 105 Auxiliary battery holder AM Automobile BT Auxiliary battery HH Wheelhouse IP Inner panel SM Side member FP Floor panel

Claims (1)

And side members, and the inner panel, the inner panel and the auxiliary battery of a motor vehicle having a floor panel disposed along each upper end surface of the side members, the auxiliary battery arrangement that Ru is disposed above the floor panel And
First support portion located on the vehicle rear side at the lower surface side which is connected to the vehicle outer side of the inner panel Rutotomoni, with respect to the wheel house rear wheel of the motor vehicle of the floor panel,
A second support portion connected to the vehicle inner side surface of the inner panel and the vehicle outer side surface of the side member on the lower surface side of the floor panel .
Holds the auxiliary battery which is connected to the upper surface of the floor panel and is arranged so as to connect the upper end surface of the first support portion and the upper end surface of the second support portion via the floor panel. Auxiliary battery holder,
Auxiliary battery placement structure for automobiles with.

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