JPH0752660A - Structure for holding battery of electric vehicle in place - Google Patents

Abstract

PURPOSE:To provide a structure for holding the batteries of an electric vehicle in place, whereby the batteries can easily be installed and removed while reducing the space occupied by the batteries. CONSTITUTION:Batteries 2 are arranged in pairs in the storage portion 10 of a battery frame 1. A belt 12 is stretched over each of the lines of batteries 2 and is secured to the horizontal frame 8 of the battery frame 1 at both ends and its middle portion by a bolt and nut 14 via brackets 13, 15. Each of the brackets 13, 15 is provided with a stopper 18 which can be made to abut to the wall surfaces of those batteries 2 which adjoin to the front and rear sides of each bracket.

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 metal case, and the plurality of cases in which the batteries are housed are stored. There is one in which each is separately attached to the frame of the vehicle body (for example, a vehicle 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 that a plurality of batteries must be mounted separately, 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.

Therefore, the present invention provides a battery fixing structure for an electric vehicle that requires a small space for installation and can be easily fixed and removed.

[0007]

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 belt whose both ends are fixed to a battery mounting member is laid from above the battery on the row of batteries arranged in, and a bracket that locks the middle part of the belt to the partition frame between the batteries on which the belt is laid. Is attached, and stoppers are provided at the front and rear of the bracket, which are close to the wall surfaces of the front and rear batteries, respectively.

[0008]

Function: Each row of batteries is easily fixed with a single belt. When replacing batteries, the restraint on all batteries in the row can be released by removing the belt.

Further, when a large force in the front-rear direction is applied to the battery at the time of collision of the front-rear surface of the vehicle, the tension of the belt prevents the displacement of the battery in the front-rear direction by the stopper of the bracket.

[0010]

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.

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

The battery frame 1 is provided with side frames 4 on both sides along the front-rear direction, and a rear frame 5 and a front frame 6 curved forward are provided on the rear and front portions, respectively, along the vehicle width direction. A sub-frame 7 connected to the rear hood 5 is provided at the rear end of each side frame 4.

Further, five lateral frames 8 as partitioning frames are provided on both side frames 4 along the vehicle width direction, and intersect the lateral frames 8 between the rear frame 5 and the lateral frames 8 and each lateral frame 8. A vertical frame 9 as a partition frame is provided between them.

The horizontal frames 8 and the vertical frames 9 thus arranged in a grid form compartments 10 for storing a plurality of batteries 2, and a pair of batteries 2 is set in each compartment 10. It A bottom plate 11 is attached to the lower side of the battery frame 1.

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

This will be specifically described by taking one row as an example. The belt 12 is formed of a seat belt material or the like, and its end is formed by bolts and nuts 14 on the upper surfaces of the front horizontal frame 8 and the rear horizontal frame 8 via a bracket 13 as shown in FIG. It is clamped and fixed. In addition, the midway 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, the belt 12 is locked to the bracket 15, and the bracket 15 is fixed by the bolts and nuts 14 to the horizontal frame 8. It is fixed to.

As shown in FIGS. 1 and 2, the bracket 15 is a box-shaped member having an open upper portion, and a slit 1b for inserting the belt 12 is formed in the front and back in the central portion thereof to form a bottom wall 15.
The locking portion 17 is provided at a position higher than a. Further, the bracket 15 secures strength and rigidity by surrounding vertical walls, and the 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
Functioning as 8. Then, the belt 12 is penetrated through the central portion of the engaging portion 17 of the bracket 15
Are fixed by bolts and nuts 14. Incidentally, 19 in FIGS. 1 and 2 indicates a washer.

Further, a clearance C is provided between the stopper 18 and the front and rear batteries 2 so as not to interfere with the mounting of the battery 2.

Here, as shown in FIGS. 1 and 4, the belt 12
The bracket 13 for fixing the front end of the belt 13 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 batteries 2 are also fixed by the belt 12.

According to the structure of the above embodiment, one belt 12
Since all the batteries 2 in one row can be fixed at the same time, the work of attaching the batteries 2 can be facilitated. Further, even when the battery 2 is replaced, all the batteries 2 in the row are simply removed by loosening the bolts and nuts 14 of the brackets 13 and 15 and removing them from the lateral frame 8.
Since it can be removed, removal work is easy.

Further, there is an advantage that the occupied space is smaller than the case where the battery 2 is housed in the case and the case is attached to the vehicle body.

Here, when a forward force is applied to each battery 2 during a vehicle frontal collision, the batteries 2 try to roll forward as indicated by the arrow in FIG. But,
Since the stoppers 18 of the brackets 13 and 15 are located higher than the center of gravity G of the battery 2, the stoppers 18 prevent the battery 2 from rolling and the belt 12 prevents the battery 2 from being displaced upward. At this time,
If the brackets 13 and 15 are set to have a strength such that they are crushed and deformed by the collision of the battery 2, the bracket 1
3,15 can be made to function as an energy absorber. At this time, 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 space can be provided between the horizontal frame 8 and the horizontal frame 8, and therefore, the work of mounting the battery 2 in the storage portion 10 can be easily performed.

[0024]

As described above, according to the present invention, all the batteries of one row can be fixed at the same time by one belt. Therefore, the space for disposing the battery is small, and the battery can be easily attached and detached.

Further, the stopper of the bracket can surely prevent the battery from moving forward or backward in the event of a vehicle front-rear collision, and thus prevent the battery from moving upward and backward together with the belt. .

[Brief description of drawings]

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

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

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

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

[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 ... Vehicle body floor (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 disposed on the battery mounting member. A belt whose both ends are fixed to the battery mounting member is laid from above the battery to the row of batteries, while a bracket that attaches the intermediate portion of the belt is attached to the partition frame between the batteries on which the belt is laid, A battery fixing structure for an electric vehicle characterized in that front and rear portions of the bracket are provided with stoppers which are close to wall surfaces of front and rear batteries, respectively.