JP2867000B2 - Battery holding 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 holding structure for an electric vehicle in which a battery carrier for storing a battery is mounted on a vehicle body.

[0002]

2. Description of the Related Art An electric vehicle as a pollution-free vehicle having no exhaust gas or noise often uses an AC motor or a DC motor and a battery as power sources. Usually, the battery is stored in a battery carrier. The battery carrier is supported under the floor of the vehicle body. In order to prevent the battery from moving in the battery carrier when the electric vehicle starts and stops, the battery is held by the battery carrier. No. 146724.

As shown in FIG. 8, in the battery holding structure of this electric vehicle, a plurality of batteries 70 are provided in a battery carrier 72 at predetermined intervals in the vehicle longitudinal direction and the vehicle width direction.
Are mounted, and a plurality of clamp members 76 which are elongated in the longitudinal direction of the vehicle body are provided above the batteries 70.

Further, as shown in FIG. 9, in the battery holding structure of this electric vehicle, a bolt 78 attached to a clamp member 76 and inserted between adjacent batteries 70 in the front-rear direction of the vehicle body is attached to a bottom 72A of a battery carrier 72. The battery 70 is clamped between the clamp member 76 and the bottom 72 </ b> A of the battery carrier 72 by fastening to the weld nut 80 fixed to the battery carrier 72.

[0005]

However, in this battery holding structure for an electric vehicle, the number of bolts 78 and weld nuts 80 increases in accordance with the number of batteries 70, and the battery 70 is fixed to the battery carrier 72. In this case, the number of fastening points increases. Therefore, the assembling workability is not good, and the bolt 78 and the weld nut 8
0 means weight increase.

In view of the above, it is an object of the present invention to provide a battery holding structure for an electric vehicle which can improve the workability of mounting a battery on a battery carrier and reduce the weight of a battery carrier. I do.

[0007]

A battery holding structure for an electric vehicle according to the present invention is a battery holding structure for an electric vehicle in which a battery carrier storing a plurality of batteries is mounted under the floor of a vehicle body. And a clamp having a tapered concave portion formed at an intermediate portion thereof, and a clamp provided at a lower surface side of the floor pan facing the concave portion of the clamp to fix the battery carrier to the vehicle body and simultaneously press the concave portion of the clamp. And a floor under member.

[0008]

In the battery holding structure for an electric vehicle according to the present invention, a clamp having a tapered concave portion formed in an intermediate portion is erected on an adjacent battery placed with a gap in a battery carrier. Fix the carrier to the car body. In this case, at the same time as fixing the battery carrier to the vehicle body, a floor under member provided at a position on the lower surface side of the floor pan facing the concave portion of the clamp presses the concave portion of the clamp. Thereby, each battery is sandwiched and held between the clamp and the bottom of the battery carrier.
For this reason, the workability of attaching the battery to the battery carrier can be improved, and the floor under member, which is a strength member, can be fixed to the clamp, as compared with a structure in which a battery is held using bolts and nuts as in the conventional structure. The use as a holder eliminates the need to use bolts and nuts, and can reduce the weight of the battery carrier.

Further, in the battery holding structure for an electric vehicle according to the present invention, a tapered concave portion is formed in an intermediate portion of the clamp, and the floor under member is guided by the tapered concave portion to reach the bottom of the concave portion. Therefore, even when the position of the floor under member and the position of the bottom of the concave portion are misaligned, the battery carrier is aligned with the vehicle body at the same time as the battery carrier is raised.
The workability of assembling the battery carrier to the vehicle body can also be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a battery holding structure for an electric vehicle according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle body, an arrow IN indicates an inward direction of the vehicle width, and an arrow UP indicates an upward direction of the vehicle body.

As shown in FIG. 7, a battery carrier 12 is provided below a floor pan 11 of a vehicle body 10 of the electric vehicle according to the present embodiment.

As shown in FIG. 2, the battery carrier 1
Reference numeral 2 denotes a rectangular dish which is long in the longitudinal direction of the vehicle body, and has a horizontal flange 12A formed on an outer peripheral portion. Also,
In a horizontal flange 12A formed on a side portion of the battery carrier 12, elongated mounting holes 14 having a longitudinal direction in the vehicle longitudinal direction are formed at predetermined intervals in the vehicle longitudinal direction.

As shown in FIG. 1, a rocker 16 is arranged outside the floor pan 11 in the vehicle width direction along the vehicle longitudinal direction. The rocker 16 is composed of a rocker outer 18 constituting an outer portion of the rocker 16 in the vehicle width direction and a rocker inner 20 constituting an inner portion of the rocker 16 in the vehicle width direction, and has a closed sectional structure extending in the vehicle longitudinal direction.

A flange 11A is formed on the upper edge of the vertical wall 20A of the rocker inner 20 at the outer edge of the floor pan 11 in the vehicle width direction and is welded upward. On the lower surface 11B of the floor pan 11, two floor under members 13 are arranged in parallel in the vehicle longitudinal direction. These floor under members 13 have a U-shaped cross section as viewed from the vehicle front-rear direction, with the opening directed upward. The upper end of the outer wall portion 13A in the vehicle width direction of the floor under member 13 is bent outward in the vehicle width direction to form a flange 13B, and the flange 13B is welded to the lower surface 11B of the floor pan 11. The upper end of the inner wall portion 13C in the vehicle width direction of the floor under member 13 is bent inward in the vehicle width direction to form a flange 13D.
B is welded. Therefore, the floor under member 13
And the floor pan 11 form a closed cross-sectional structure having a rectangular cross-section extending in the vehicle front-rear direction.

At the bottom 12B of the battery carrier 12,
Three convex portions 12C extending in the vehicle front-rear direction are formed at substantially equal intervals in the vehicle width direction, and between each side wall portion of these convex portions 12C and the inner wall portion 12D of the battery carrier 12 are provided. , A plurality of batteries 30 are respectively mounted,
The rows of the batteries 30 along the vehicle front-rear direction are four rows in the vehicle width direction.

As shown in FIG. 2, each battery 30 has a block shape, and the batteries 30 adjacent in the vehicle longitudinal direction are in contact with each other. A clamp 32 is provided between the battery 30 in the outermost row in the vehicle width direction and the opposite battery 30 in the inner row so as to straddle the protrusion 12C of the battery carrier 12.

As shown in FIG. 3, the clamp 32 is formed by bending a band-shaped plate material, and both ends in the longitudinal direction are engaging portions 32A, and a tapered concave portion 3 is provided in the middle portion in the longitudinal direction.
4 are formed. That is, the concave portion 34 and the bottom portion 34A,
Inclined portions 34B and 34C extending from both ends of the bottom portion 34A and gradually increasing the opening width and being connected to the engaging portion 32A.
Consisting of

As shown in FIG. 2, the engaging portion 32A of the clamp 32 is formed on an upper portion 30A of the battery 30.
The lower surface 13 </ b> E of the floor under member 13 is in contact with the bottom 34 </ b> A of the concave portion 34 of the clamp 32.

The lower wall portion 20B of the rocker inner 20 has a mounting hole 1 for the horizontal flange 12A of the battery carrier 12.
A circular hole 22 is formed in a portion facing 4. Also,
A circular hole 22 is formed on the upper surface of the lower wall portion 20B of the rocker inner 20.
A weld nut 24 is welded coaxially. A battery carrier assembling bolt 26 inserted from below the vehicle body into the mounting hole 14 of the horizontal flange 12A of the battery carrier 12 is screwed to the weld nut 24.

The battery carrier assembling bolt 26
Is screwed into the weld nut 24 so that the floor under member 13 presses the clamp 32.

Next, the operation of this embodiment will be described. In the battery holding structure for an electric vehicle according to the present embodiment, the battery 30 is
Is mounted on the vehicle body 10, first, a clamp 32 having a tapered concave portion 34 formed at an intermediate portion is installed between adjacent batteries 30 mounted on the battery carrier 12 at intervals in the vehicle width direction. I do.

At this time, the position of each battery 30 in the vehicle front-rear direction and the vehicle width direction is set at the bottom 12 of the battery carrier 12.
It is fixed by the shape of B, that is, the wedge convex portion 12C of the bottom portion 12B of the battery carrier 12 in the vehicle longitudinal direction.

Thereafter, the battery carrier 12 is lifted by a jack or the like. In this case, as shown in FIG.
When the bottom portion 34A is displaced in the vehicle width direction, the clamp 32
Of the floor under member 13
Abut. Thereafter, the battery carrier 12 is guided by the floor under member 13 and is obliquely upward (arrow A in FIG. 4).
5), and the battery carrier 12 is lifted to a position where the bottom 34A of the concave portion 34 of the clamp 32 contacts the lower surface 13E of the floor under member 13 as shown in FIG.

Thus, the tightening position of the battery carrier 12 in the vehicle width direction is automatically determined. Further, as shown in FIG. 2, since the mounting hole 14 is a long hole whose longitudinal direction is the vehicle longitudinal direction, the tightening position of the battery carrier 12 in the vehicle longitudinal direction is easily determined. Therefore,
Even when the position of the floor under member 13 and the bottom portion 34A of the concave portion 34 of the clamp 32 are displaced in the vehicle width direction, the battery carrier 12 is automatically aligned with the vehicle body 10 at the same time as the battery carrier 12 is raised. Therefore, the workability of assembling the battery carrier 12 to the vehicle body 10 is improved.

At this time, as shown in FIG. 6, the lower wall portion 20B of the rocker inner 20 and the battery carrier 12
And a horizontal flange 12A. Therefore, the clamp 32 is pressed downward by the floor under member 13 by further lifting the battery carrier 12 and screwing the battery carrier assembling bolt 26 to the weld nut 24. Thus, each battery 30 is sandwiched and held between the engagement portion 32A of the clamp 32 and the bottom portion 12B of the battery carrier 12. For this reason, the workability of attaching the battery to the battery carrier can be improved as compared with a structure in which the battery is held using bolts and nuts as in the conventional structure, and
The floor under member 13 which is a strength member is clamped 32.
The use of the bolts and nuts eliminates the need to use bolts and nuts, thereby reducing the weight of the battery carrier.

[0027]

The battery holding structure for an electric vehicle according to the present invention is a battery holding structure for an electric vehicle in which a battery carrier storing a plurality of batteries is installed under the floor of a vehicle body. A clamp having a tapered concave portion formed in a portion thereof, and a floor under member provided at a position on the lower surface side of the floor pan facing the concave portion of the clamp and fixing the battery carrier to the vehicle body and simultaneously pressing the concave portion of the clamp. With this configuration, the operability of attaching the battery to the battery carrier can be improved, and the weight of the battery carrier can be reduced.
Further, the workability of attaching the battery carrier to the vehicle body can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a battery holding structure of an electric vehicle according to an embodiment of the present invention, as viewed from the front of a vehicle body.

FIG. 2 is a perspective view showing a state before a battery carrier to which a battery holding structure of an electric vehicle according to an embodiment of the present invention is applied to a vehicle body, as viewed from an obliquely upper front side of the vehicle body.

FIG. 3 is a perspective view showing a clamp of the battery holding structure of the electric vehicle according to one embodiment of the present invention.

FIG. 4 is an operation explanatory view when a battery carrier to which the battery holding structure of the electric vehicle according to one embodiment of the present invention is applied is assembled.

FIG. 5 is an operation explanatory view when a battery carrier to which the battery holding structure of the electric vehicle according to one embodiment of the present invention is applied is assembled.

FIG. 6 is an operation explanatory view when a battery carrier to which the battery holding structure of the electric vehicle according to one embodiment of the present invention is applied is assembled.

FIG. 7 is a perspective view showing a vehicle body to which the battery holding structure of the electric vehicle according to one embodiment of the present invention is applied, as viewed from a diagonally lower rear side of the vehicle body.

FIG. 8 is a perspective view showing a battery holding structure of an electric vehicle according to a conventional example, as viewed obliquely from the upper front side of a vehicle body.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body 11 Floor pan 11B Lower surface 12 Battery carrier 13 Floor under member 13E Lower surface 30 Battery 32 Clamp 32A Engaging part 34 Depression 34A Bottom part 34B Inclined part 34C Inclined part

Continuing on the front page (72) Inventor Keiji Kunihoku Kanagawa Prefecture Yokosuka City Taura Port Town Mukai Kanto Auto Works, Ltd. (72) Inventor Suzuki Tomoko Yokosuka City Taura Port Town Mukai Kanto Auto Works, Ltd. (56) References JP 5-12232 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60K 1/04 H01M 2/10

Claims (1)

(57) [Claims] 1. A battery holding structure for an electric vehicle in which a battery carrier in which a plurality of batteries are stored is mounted under the floor of a vehicle body. A floor under member provided at a position on the lower surface side of the floor pan facing the concave portion of the clamp, and fixing the battery carrier to the vehicle body and pressing the concave portion of the clamp at the same time. Battery holding structure.