JP2002187507A - Fixing structure of battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure of a battery capable of fixing the battery to a corner where a floor panel in the rear of a rear wheel house of a car body turns inside by securing sufficient strength while downsizing a battery bracket to fix the battery. SOLUTION: The battery 60 is fixed in a narrow and open space in the rear of the rear wheel house by mounting the battery bracket 11 on the floor panel 51 by mounting holes 113a, 113b, 113c provided on three points of legs 112a, 112b, 112c so that the center of gravity G of the battery 60 is positioned within a triangle joining these mounting holes 113a, 113b, 113c to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure of a battery when the battery is mounted in a narrow empty space of a vehicle, and more particularly to a fixing structure capable of reducing the size of a battery bracket for fixing the battery.

[0002]

2. Description of the Related Art An electric vehicle or a hybrid vehicle is equipped with a high-voltage battery as a power source.
Since the high-voltage battery has a high voltage and cannot be used as a power source for operating auxiliary equipment such as a lamp or a horn of a vehicle, a small motor or an electromagnetic actuator, a conventional engine such as a gasoline engine or a diesel engine is used as a power source. Similar to a car, an electric vehicle or a hybrid vehicle is also equipped with a small accessory battery.

[0003] In addition, since the battery is mounted in an engine room, unlike a conventional vehicle powered by an engine, it is mounted near the high voltage battery in order to exchange charging and discharging with a high voltage battery. It is desirable to mount it. In a passenger car or a van-type car as an electric vehicle or a hybrid vehicle, a high-voltage battery is often mounted in a vehicle room (a passenger room or a luggage room). Therefore, the auxiliary battery is also mounted in the vehicle interior. In this case, a narrow empty space at the rear of the rear wheel house is mainly used in the vehicle interior.

When the auxiliary battery is mounted at the rear of the rear wheel house, the floor panel at the rear of the rear wheel house is further connected to the rear end of the vehicle. The space for mounting the battery bracket for holding the battery for the auxiliary panel on the floor panel is limited, and it is difficult to sufficiently secure the mounting strength of the battery for the auxiliary equipment. To secure the mounting strength, the battery bracket must be bent intricately to increase the number of mounting points on the floor panel and to add additional stays, which complicates the structure and increases the number of parts and weight. Was.

In order to solve the above-mentioned problems, the present invention secures sufficient strength while reducing the size of a battery bracket for fixing a battery at a corner where a floor panel at the rear of a rear wheel house of a vehicle body is turned inward. It is an object of the present invention to provide a battery fixing structure that can be used.

[0006]

According to the present invention, there is provided a battery fixing structure for fixing a battery mounted on a floor panel at the rear of a rear wheel house, with the outside mounted on a vehicle outer plate and the inside mounted in a space surrounded by trim. A mounting hole for mounting the battery on the floor panel of a battery bracket for mounting the battery, two points at positions along the outline of the floor panel, and another point outside the trim and at the two points. Provided at a position inside the vehicle from any one or two of the points, via a battery bracket formed so that the center of gravity of the battery is located in the triangle connecting these three mounting holes,
The battery is fixed to the floor panel.

Therefore, even in a vehicle having a structure in which the floor panel at the rear of the rear wheel house goes inward and the outline of the floor panel presents a triangle, two points of bracket mounting holes are provided along this outline. Since the other mounting hole was set as far away from the two mounting holes as possible, and the bracket mounting hole was set so that the center of gravity of the battery was located in the triangle connecting these three mounting holes, However, even if it protrudes from this triangle, the center of gravity is located inside the triangle, so the weight of the battery can be shared and held by the three mounting parts of the battery bracket, and sufficient strength is secured even with a small battery bracket can do.

Further, in the battery fixing structure according to the present invention, the battery bracket has a substantially parallelogram shape in a plan view, and the mounting holes are provided outside two opposite sides of the parallelogram shape. And Therefore, the shape of the battery bracket is a parallelogram formed by two sides substantially parallel to the front-rear direction of the vehicle, a side connecting two adjacent mounting portions in the vehicle width direction, and another side substantially parallel thereto. Since the mounting holes are provided outside the two opposing sides of the parallelogram, the size can be reduced while securing the mounting surface of the battery, and the weight of the battery bracket can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a battery fixing structure according to the present invention will be described below with reference to the drawings. The battery fixing structure according to the present embodiment is provided in a hybrid vehicle of a van type vehicle. Here, FIG. 1 is a plan view of a main part of a vehicle to which a battery fixing structure according to the present invention is applied, FIG. 2 is an enlarged side view of the battery fixing structure, and FIG. 3 is a plan view of the same. .
FIG. 4 is a perspective view of the battery bracket.

(Configuration) The configuration of an embodiment of a battery fixing structure according to the present invention will be described. First, as shown in FIG. 1, the high-voltage battery and the auxiliary battery are arranged in a battery storage room 57 provided between the left and right rear wheel houses 52, 52 of the van type vehicle. A high-voltage battery is housed in the interior of the rear wheel house 52 and an auxiliary battery 60
Is stored.

That is, the high-voltage battery is provided with an intake fan 32 for supplying cooling air to a case 31 containing the high-voltage battery, and an intake duct 33 connecting the intake fan 32 and the case 31. An exhaust duct 34 for exhausting warm air after cooling the high-voltage battery by circulating inside the exhaust duct 34 is provided, and the end of the exhaust duct 34 is opened to the outside of the vehicle.

On the other hand, the auxiliary battery 60 is disposed in a space 50 surrounded by a trim 53 and an outer plate 54 at the rear of the rear wheel house 52. Then, as shown in detail in FIG. 4, the battery bracket 11 on which the auxiliary equipment battery 60 is mounted is screwed on the floor panel 51 of the vehicle at three places by three legs from its top plate 111. 1
12a, 112b, and 112c are extended downward, and are attached to the vehicle floor panel 51 by bolts through mounting holes 113a, 113b, and 113c provided in the plane portions of the legs 112a, 112b, and 112c.

The top plate 111 of the battery bracket 11 has a substantially parallelogram shape in a plan view, and two sides substantially parallel to the front-rear direction of the vehicle, and the outer side of the two sides retreats to the rear side of the vehicle and moves inward. Is connected to the front and rear inclined sides to form a parallelogram. At two positions near the end of the front inclined side, the legs 112a and 112c respectively project downward in a Z-shape,
The flat portions of the legs 112a and 112c are
Mounting holes 113a, 1
13c attaches to the floor panel 51 with bolts. The mounting holes 113a and 113c are provided outside the front inclined side. Similarly, the rear leg portion 112b projects downward in a Z-shape at one position near the rear inner side of the vehicle at the rear inclined side, and the flat portion of the leg portion 112b abuts on the floor panel 51. And the mounting hole 11 provided in the plane portion.
3b attaches to the floor panel 51 with bolts. The mounting hole 113b is provided outside the rear inclined side.

That is, of the three legs 112a, 112b, 112c of the battery bracket 11, two outer legs 112a, 112b are connected to the floor panel 5 of the vehicle.
Screwed along mounting lines 113a and 113b provided in the battery bracket 11 along the outer shape line 1, and another leg portion 112c is provided at one of the two points or at a position inside the vehicle from the two points. It is screwed in the mounting hole 113c and mounted on the floor panel 51. Therefore, the battery bracket 11 has three legs 1
The battery bracket 11 is attached to the floor panel 51 by 12a, 112b, and 112c so that the center of gravity G of the auxiliary battery 60 is located within a triangle connecting the three mounting holes 113a, 113b, and 113c provided in the battery bracket 11. 11 legs 112a, 112b, 11
The position of 2c is set.

Further, between the two legs 112a and 112c at the front of the battery bracket 11, a vertical wall 12 having an L-shape in side view is formed by a lateral portion 122 of a concave portion 114 provided on the top plate 111 of the battery bracket 11. The vertical portion 121 of the vertical wall 12 is mounted so as to be located slightly apart from the front surface of the auxiliary battery 60 and to be parallel to the front surface of the auxiliary battery 60. I have.

On the outer side of the battery bracket 11, an L-shaped elongated stay 15 having a height vertically balanced with the height of the auxiliary battery 60 is provided with a mounting hole for a stay mounting portion 115 of the top plate 111. And is attached by a bolt in contact with the back surface of the top plate 111.

On the other hand, a long hole 116 is provided in a vertical flange which bends downward from the top plate 111 on the inner side of the vehicle of the battery bracket 11, and a long bolt 14 is provided in the long hole 116.
Is hooked at the lower end of the J-shaped hook.

Then, one end is bolted to the upper end of the stay 15 described above, and the other end is inserted into the threaded portion of the upper end of the long bolt 14 to bridge and tighten the upper surface of the auxiliary battery 60. The auxiliary battery 6
0 is attached to the vehicle.

Reference numeral 20 in the figure denotes a bracket for receiving an impact load together with the exhaust duct 34 when the auxiliary battery 60 moves and hits when a large impact is applied to the vehicle. 52.

(Operation) Next, the operation of the embodiment of the battery fixing structure according to the present invention configured as described above will be described. An auxiliary battery 60 is mounted on a battery bracket 11 attached to a floor panel 51 of the vehicle.
The vehicle front-rear direction is defined between a corner inside the front end and a corner outside the rear end of the battery bracket 11 so that the left-right direction of the vehicle is substantially parallel to the two left and right sides of the battery bracket 11. The auxiliary equipment battery 60 is attached to the battery bracket 11 so that the front and rear wall surfaces of the auxiliary equipment battery 60 are positioned.
It is mounted on the upper side via a battery tray 61.

Then, as described above, the L-shaped elongated stay 15 which is attached to the mounting hole of the stay mounting portion 115 of the top plate 111 from the back surface of the top plate 111 by a bolt, and the vehicle having the battery bracket 11 A long bolt 14 with a J-shaped hook at the lower end hooked into a long hole 116 provided in a vertical flange bent downward from the top plate 111 on the inner side, and one end bolted to the upper end of the stay 15, The battery for auxiliary equipment 60 is attached to the vehicle by the battery support 13 which has the other end inserted through the threaded portion of the upper end of the long bolt 14 and bridges and tightens the upper surface of the battery for auxiliary equipment 60.

As described above, when the accessory battery 60 is fixed on the battery bracket 11, the accessory battery 6
As shown in FIG. 3, the center of gravity G of the mounting holes 113a, 1
13b and 113c are set so as to be located in a triangle connecting them. Therefore, no moment due to the weight of the auxiliary battery 60 is applied to any of the three legs 112a, 112b and 112c of the battery bracket 11, The weight of the auxiliary battery 60 is reduced by the three legs 112a and 112.
The auxiliary battery 60 is stably fixed to the battery bracket 11.

If the center of gravity G of the auxiliary battery 60 is
Are positioned outside the triangle connecting the mounting holes 113a, 113b, 113c.
When the position of c is set, for example, the center of gravity G of the auxiliary battery 60 is attached to the mounting holes 113a, 1
13b is located outside the line connecting the legs 13b.
The weight of the auxiliary equipment battery 60 is applied to a and 112b,
Conversely, a force (moment) for lifting the leg portion 112c acts on the leg portion 112c, and the fixing of the auxiliary device battery 60 becomes unstable.

Further, even when the vehicle is suddenly started or braked, or suddenly turned to the right or left, the center of gravity G of the battery for auxiliary equipment 60 is always attached even if inertial force in front and rear and left and right acts on the battery for auxiliary equipment 60. If it is set so as to be located in the triangle connecting the holes 113a, 113b, 113c, the load due to the inertial force is applied to the three legs 112a, 112b,
112c, and the auxiliary device battery 60 is stably fixed.

That is, when a sudden inertia force acts on the front of the vehicle due to a collision or sudden braking of the vehicle, the inertia force is received by the front legs 112a and 112c, and the auxiliary battery is received by the rear legs 112b. 60 suppresses the force of lifting. Conversely, due to sudden start of the vehicle, etc.,
If a sudden inertial force acts on the rear of the vehicle, the rear leg 1
12b, the inertia force is received by the front leg 112b.
The force for lifting the auxiliary device battery 60 is suppressed by a and 112c. At this time, since the rear leg 112b is located at one place, a force for rotating the auxiliary battery 60 about the leg 112b in plan view acts due to inertial force, but this force is exerted by the front legs 112a and 112c. Hold down the rotation.

Similarly, when an inertia force acts on the auxiliary battery 60 to the outside (left side) of the vehicle due to a sudden right turn of the vehicle, the inertia force is received by the outer legs 112a and 112b. The auxiliary leg battery 112 suppresses the lifting force of the auxiliary battery 60 by the inner leg portion 112c. On the other hand, when the vehicle turns sharply to the left and an inertial force acts on the auxiliary battery 60 toward the inside (right side) of the vehicle, the inner leg portion 112 is activated.
c to receive the inertial force, and the outer legs 112a,
The force for floating the auxiliary battery 60 is suppressed by 112b.

As described above, the battery bracket 11 is attached to the floor panel 51 by the three legs 112a, 112b, 112c, and the center of gravity G of the auxiliary battery 60 is placed in a triangle connecting the attachment holes 113a, 113b, 113c. Since it is mounted so as to be positioned, the gravity acting on the auxiliary equipment battery 60 and the inertial force in the front, rear, left and right directions can be held with a minimum number of legs, and the battery bracket 11 for fixing the auxiliary equipment battery 60 can be sufficiently reduced in size. The auxiliary battery 60 can be mounted in the narrow empty space 50 at the rear of the rear wheel house 52 while securing sufficient strength.

Note that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. For example, in the above embodiment,
The battery fixing structure is described as being applied to the mounting of batteries for auxiliary equipment such as hybrid vehicles or electric vehicles. However, the present invention is not limited to this, and is also applicable to the case where the battery of a conventional engine-powered vehicle is mounted. Is possible. Also, although the description has been made of the example in which the auxiliary battery is mounted on the left side of the vehicle in relation to the high-voltage battery cooling device, it may be mounted on the right side.

[0029]

According to the present invention, there is provided a fixing structure for a battery mounted on a floor panel behind a rear wheel house, on the outer side of a vehicle outer plate and on the inner side in a space surrounded by trim. Of the mounting holes for mounting the battery bracket to the floor panel, two points are at positions along the outline of the floor panel, and the other point is outside the trim and one of the two points. It is provided at a position inside the vehicle from one point or two points, and the center of gravity of the battery is arranged in a triangle connecting these three points, so that the battery bracket for fixing the battery can be miniaturized, and further sufficient strength And the battery can be mounted in a narrow empty space such as the rear side of the rear wheel house.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a vehicle to which a battery fixing structure according to an embodiment of the present invention is applied.

FIG. 2 is an enlarged side view of a battery fixing structure according to one embodiment of the present invention.

FIG. 3 is an enlarged plan view of a battery fixing structure according to one embodiment of the present invention.

FIG. 4 is a perspective view of a battery bracket applied to the battery fixing structure according to one embodiment of the present invention.

DESCRIPTION OF SYMBOLS 10 Battery fixing structure 11 Battery bracket 111 Top plate 112 Leg 113 Mounting hole 12 Vertical wall 30 High voltage battery cooling device 50 Space 51 Floor panel 52 Rear wheel house 53 Trim 54 Outer plate 60 Battery for auxiliary equipment

Claims (2)

[Claims] 1. A battery fixing structure mounted on a floor panel at the rear of a rear wheel house in a space surrounded by a vehicle outer plate on the outside and a trim on the inside, and a battery bracket for mounting the battery. The two mounting holes for the floor panel are located at positions along the outline of the floor panel, and the other point is outside the trim and at a position inside the vehicle from any one or two of the two points. A battery fixing structure for fixing a battery to a floor panel via a battery bracket formed such that the center of gravity of the battery is located in a triangle connecting these three mounting holes. 2. The battery fixing structure according to claim 1, wherein the battery bracket has a substantially parallelogram shape in a plan view, and the mounting hole is provided outside two opposite sides of the parallelogram shape. A battery fixing structure characterized by the above-mentioned.