JP2864953B2 - Battery fixing structure for electric vehicles - Google Patents

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 driving source. However, since these batteries are heavy, it takes much time and effort to mount them.

For example, there is a battery-powered forklift vehicle as a vehicle using a battery. In this type of forklift vehicle, each battery is housed in a metal case, and the plurality of cases housing the batteries are mounted. Some of them are separately 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 separately mounted, and a large number of mounting steps are required.

[0005] Further, unlike a forklift vehicle, when this structure is applied to an electric vehicle in which a space for arranging a battery is largely limited in order to secure a wide cabin space,
Since each battery is housed in a case, there is a problem that more space is required for the use of the case.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a battery fixing structure for an electric vehicle, which requires a small installation space and is easy to fix and remove.

[0007]

A battery fixing structure for an electric vehicle in which a battery mounting member defining a battery storage section is mounted on a vehicle body by partition frames arranged in a grid pattern, the battery mounting member comprising: A belt having both ends fixed to a battery mounting member from the upper side of the battery is stretched over the battery row arranged in the battery row, and a bracket for locking a middle portion of the belt to a partition frame between the batteries over which the belt is stretched is provided. Are attached to the front and rear portions of the bracket, and stoppers are provided near the wall surfaces of the front and rear batteries.

[0008]

According to the present invention, each row of batteries is easily fixed by a single belt. When performing the battery replacement work, the restraint of all the batteries in the row can be released by removing the belt.

When a large force in the front-rear direction is applied to the battery at the time of a front-rear collision of the vehicle, the battery is prevented from moving in the front-rear direction by the tension of the belt and further by the stopper of the bracket.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. In the following figures, FR indicates the front side.

In FIG. 1, reference numeral 1 denotes a battery frame as a mounting member for a battery 2, and this battery frame 1 is mounted on a lower surface of a side member S of a vehicle body floor F as a vehicle body of an electric vehicle as shown in FIG. It is designed to be detachably attached by bolts or the like. In FIG. 4, reference numeral 3 denotes a cover.

The battery frame 1 has side frames 4 on both sides along the front-rear direction, and a rear frame 5 along the vehicle width direction and a front frame 6 curving forward on the rear and front portions, respectively. At the rear end of each side frame 4, a subframe 7 connected to the rear foom 5 is provided.

On both side frames 4, there are provided five horizontal frames 8 as partition frames along the vehicle width direction. The horizontal frames 8 intersect with each other, between the rear frame 5 and the horizontal frames 8, and between the horizontal frames 8. A vertical frame 9 as a partition frame is provided therebetween.

The storage sections 10 for a plurality of batteries 2 are defined by the horizontal frames 8 and the vertical frames 9 arranged in a lattice in this manner, and a pair of batteries 2 is set in each of the storage sections 10. You. Note that a bottom plate 11 is attached to a lower side of the battery frame 1.

The battery 2 has four rows in the front-rear direction, and a belt 12 is stretched from the upper side of the battery 2 to each row.

This will be specifically described with reference to one sequence. The belt 12 is formed of a seat belt material or the like, and its terminal is provided with bolts and nuts 14 via brackets 13 on the upper surfaces of the front horizontal frame 8 and the rear horizontal frame 8 as shown in FIG. Tightened and fixed. An intermediate portion of the belt 12 is routed so as to be dropped onto the upper surface of the horizontal frame 8 located between the batteries 2. It is fixed to.

As shown in FIGS. 1 and 2, the bracket 15 is a box-shaped member having an open top and a central portion formed with a slit 1b through which the belt 12 is inserted.
The locking portion 17 is provided at a position higher than a. In addition, the bracket 15 secures strength and rigidity by surrounding vertical walls, and upper ends of the front and rear vertical walls are formed higher than the height of the center of gravity G of the battery 2 as shown in FIG. Stopper 1 near the wall of battery 2
It functions as 8. Then, the belt 12 is passed through the center of the locking portion 17 of the bracket 15 so that the belt 12
Are fixed by bolts and nuts 14. In addition, 19 in FIGS. 1 and 2 shows a washer.

A clearance C is provided between the stopper 18 and the front and rear batteries 2 so as not to hinder the mounting of the battery 2.

Here, as shown in FIGS.
The bracket 13 for fixing the front end of the belt 12 has the stopper 18 only on the rear side, and the bracket 13 for fixing the rear end of the belt 12 has the stopper 18 only on the front side. Although not shown, the other rows of the batteries 2 are also fixed by the belt 12.

According to the structure of the above embodiment, one belt 12
As a result, all the batteries 2 in one row can be fixed at the same time, so that the work of mounting the batteries 2 can be facilitated. When the batteries 2 are replaced, the brackets 13 and 15 are simply removed from the horizontal frame 8 by loosening the bolts and nuts 14 and all the batteries 2 in the row are replaced.
Can be removed, making it easy to remove.

Further, there is an advantage that the occupied space can be reduced as compared with the case where the battery 2 is housed in the case and the case is mounted on the vehicle body.

Here, when a forward force acts on each battery 2 at the time of a frontal collision of the vehicle, the batteries 2 tend to roll forward as indicated by arrows in FIG. But,
Since the stoppers 18 of the brackets 13 and 15 are located at a position higher than the center of gravity G of the battery 2, rolling of the battery 2 is prevented by the stopper 18 and upward displacement of the battery 2 is prevented by the belt 12. At this time,
If the brackets 13 and 15 are set to have such strength that they are crushed and deformed by the contact of the battery 2,
3, 15 can function as an energy absorber. In this case, since the battery 2 is pressed by the belt 12, the battery 2 does not come off.

Since the battery 2 is fixed by using the brackets 13 and 15, the battery 2
A margin can be provided between the battery 2 and the horizontal frame 8, so that the work of mounting the battery 2 in the storage section 10 can be easily performed.

[0024]

As described above, according to the present invention, all the batteries in one row can be fixed at the same time by one belt, and therefore, compared with the case where the batteries are fixed using a case. As a result, the space for arranging the battery can be reduced, and the work of mounting and removing the battery can be easily performed.

Further, the stopper of the bracket can reliably prevent the battery from moving forward or backward in the event of a collision in the front-rear direction of the vehicle, so that the battery together with the belt can be prevented from moving upward and in the front-rear direction. .

[Brief description of the drawings]

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

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along the line BB of FIG. 1;

[Explanation of symbols]

 2 ... Battery 8 ... Horizontal frame (partition frame) 9 ... Vertical frame (partition frame) 10 ... Storage part 12 ... Belt 15 ... Bracket 18 ... Stopper G ... Center of gravity F ... Body floor (body)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60K 1/04 H01M 2/10

Claims (1)

(57) [Claims] 1. A battery fixing structure for an electric vehicle in which a battery mounting member defining a battery storage section is mounted on a vehicle body by a partition frame arranged in a grid, and is disposed on the battery mounting member. While a belt whose both ends are fixed to the battery mounting member from the upper side of the battery is stretched over the row of batteries, a bracket for locking a middle portion of the belt is attached to a partition frame between the batteries over which the belt is stretched, A battery fixing structure for an electric vehicle, wherein stoppers are provided at front and rear portions of the bracket, the stoppers being close to front and rear battery walls.