JPH0769077A - Battery fixing structure for electric automobile - Google Patents

Abstract

PURPOSE:To provide a battery fixing structure for an electric automobile by which a battery ocuppying space can be reduced and batteries can be installed and removed easily. CONSTITUTION:A battery frame 1 is partitioned by lateral frames 9 and longitudinal frames 10, and plural housing parts 11 are formed. Batteries 2 making a pair of four pieces are mounted here. Terminals 2a of the respective batteries 2 are made adjacent to each other, and brackets 13 having a hat shape cross section are arranged so as to cover the upper sides of these terminals 2a, and these brackets 13 are installed on the lateral frames 9 by bolts 14, and the batteries 2 are fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery fixing structure for an electric vehicle.

[0002]

2. Description of the Related Art In an electric vehicle, a large number of batteries are required as a drive source, but since these batteries are heavy, it takes a lot of time to mount them.

For example, there is a battery-driven type forklift truck as a vehicle using a battery. In this type of forklift truck, each battery is housed in a case, and the plurality of cases in which the batteries are housed are separately provided. There is a vehicle mounted on a frame of a vehicle body (for example, an automobile equipped with a battery is disclosed in Japanese Utility Model Laid-Open No. 47-31318).

[0004]

However, in the above-mentioned prior art, there is a problem in that a plurality of batteries must be individually positioned and mounted, which requires a large number of mounting steps.

Further, unlike the forklift truck, when this structure is applied to an electric vehicle in which the battery arrangement space is largely limited in order to secure a large vehicle interior space,
Since each battery is housed in the case, there is a problem that a larger space is required for the use of the case.

On the other hand, there is also one in which each battery is individually attached by a bracket without using a case (see Japanese Utility Model Laid-Open No. 63-112755).
When such a fixing structure is applied to an electric vehicle having a large number of batteries, a large number of brackets are required, so that the number of parts is increased, the weight of the vehicle body is increased, and the cost is increased.

Therefore, the present invention provides a battery fixing structure for an electric vehicle which requires a small space for disposing the battery and facilitates the battery fixing and removing operations.

[0008]

A battery mounting structure for an electric vehicle in which a battery mounting member having a battery storage section defined by partition walls arranged in a grid pattern is mounted on a vehicle body. A metal bracket with a concave cross-section is arranged along the battery rows in the vehicle front-rear direction arranged so as to cover the upper side of the terminals of each battery, and the bracket is fixed to the partition frame to It is attached to the battery mounting member.

[0009]

Function: Each row of batteries is easily fixed with a single bracket. When the battery is replaced, the bracket can be removed to release the restraint of all the batteries in each row.

The bracket also functions as a radiation fin for removing heat generated near the terminals of the battery.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the following figures, FR indicates the front side of the vehicle body and OUT indicates the outside of the vehicle body.

In FIG. 1, reference numeral 1 denotes a battery frame as a mounting member for a battery 2, and the battery frame 1 is a side member as a vehicle body attached to the lower surface of a floor panel F of an electric vehicle as shown in FIG. It is adapted to be detachably attached to the lower surface of S by means of bolts and nuts 3. In addition, 4 shows a color.

As shown in FIG. 1, the battery frame 1 is provided with side frames 5 on both sides along the front-rear direction,
A rear frame 6 along the vehicle width direction and a front frame 7 that curves to the front side are provided in the rear and front portions, respectively, and a sub-frame 8 connected to the rear frame 6 is provided at the rear end of each side frame 5. ing.

Then, five lateral frames 9 as partitioning frames are provided along the vehicle width direction on both the side frames 5 and both sub-frames 8, and between these lateral frames, a position adjacent to the side frames 5 is provided. A vertical frame 10 as a partition frame is provided at the center of the battery frame 1 in the width direction.

The horizontal frames 9 and the vertical frames 10 thus arranged in a lattice form compartments 11 for the plurality of batteries 2, and the batteries 2 are set in groups of four in each compartment 11. It A bottom plate 12 is attached to the lower side of the battery frame 1.

As shown in FIG. 1, the four batteries 2 are arranged so that their terminals 2a are adjacent to each other, which are arranged in two rows along the longitudinal direction of the vehicle body.
An aluminum bracket 13 is attached to each row in the vehicle front-rear direction so as to cover the upper side of the terminal 2a.

The bracket 13 is formed in a hat-shaped cross-section as a concave cross-section, and the bottom wall 13a is provided with an insertion hole 15 for a bolt 14, and as shown in FIG. It is fixed at 9. The bottom wall 13a of the bracket 13 is, as shown in FIG.
It is formed to have a width dimension that covers the two terminals 2a of the batteries 2 adjacent to each other, and a ventilation hole 13c is formed in the side wall 13b of the bracket 13. Further, the flange portion 13d of the bracket 13 has a cover 16 which will be described later as shown in FIG.
Are fixed by a clip C.

As shown in FIG. 2, a cover 16 for covering the upper portion of the battery frame 1 on which the battery 2 is placed is attached to a support bracket 5a provided on the side frame 5. The support bracket 5a is located outside the inner wall 5b of the side frame 5.

As shown in FIG. 1, the front frame 7 has an air inlet 17 and the battery frame 1 has a duct 18 connected to the air inlet 17 as shown in FIG.
Is provided. Reference numeral 19 in FIG. 3 indicates a harness that connects the terminals 2a of the battery 2.

According to the structure of the above-described embodiment, the battery 2 can be positioned and mounted by mounting the battery 2 in each housing 11, so that the battery 2 can be mounted using the case.
The space occupied by the battery 2 is smaller than that in the case where the battery 2 is mounted, and it is possible to easily attach and detach the battery 2.

Since the two groups of batteries can be attached to the battery frame 1 by the two brackets 13, the number of parts can be reduced and the number of assembling steps can be reduced as compared with the case where they are individually attached by the brackets. The cost can be reduced.

Since the bracket 13 is arranged so as to cover the upper side of the terminal 2a of the battery 2, the periphery of the terminal 2a of the battery 2 where the temperature is relatively high is efficiently cooled by using the bracket 13 as a radiation fin. It is advantageous in that it can be done. At this time, the side wall 1 of the bracket 13
Since the vent hole 13c is provided in 3b, heat is not trapped inside the bracket 13.

Further, the air introduction port 1 of the front frame 7
The outside air or the conditioned air introduced from 7 through the duct 18 flows through the space portion K (shown in FIG. 2) secured between the bracket 13 and the covers 16 on both sides of the upper portion of the battery 2, so that the temperature easily becomes high. The upper portion of the battery 2, especially the corner portion (shown by hatching in FIG. 2) can be efficiently cooled or heated.

[0024]

As described above, according to the present invention, the battery can be mounted by mounting the battery in each of the storage portions. Therefore, as compared with the case where the battery is mounted using the case. Occupies less space,
Moreover, since it is fixed by the bracket, the battery can be easily attached and detached.

Further, since the bracket is arranged so as to cover the upper side of the terminal of the battery, it is possible to radiate the heat generated in the vicinity of the terminal or the like and suppress the temperature rise of the battery.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Battery frame (battery mounting member) 2 ... Battery 2a ... Terminal 9 ... Horizontal frame (dividing frame) 10 ... Vertical frame (dividing frame) 11 ... Storage part 13 ... Bracket S ... Side member (vehicle body)

Claims (1)

[Claims] 1. A battery fixing structure for an electric vehicle in which a battery mounting member, which defines a battery storage portion by partition walls arranged in a grid pattern, is attached to a vehicle body, and the battery mounting member is arranged on the battery mounting member. A metal bracket having a concave cross-sectional shape is arranged along the battery rows in the vehicle body front-rear direction so as to cover the upper side of the terminals of each battery. The bracket is fixed to the partition frame, and the battery is placed on the battery mounting member. A battery fixing structure for an electric vehicle, characterized in that the battery fixing structure is attached to.