JP2565239Y2 - Vehicle battery mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a battery of a vehicle, for example, for driving a motor in an electric vehicle.

[0002]

2. Description of the Related Art A battery for driving a motor of an electric vehicle includes:
In addition to being heavy alone, it must be mounted in large numbers. A conventional battery mounting of an electric vehicle is disclosed in, for example, "New Edition of Automotive Engineering Handbook" (p.3-1, issued by the Society of Automotive Engineers of Japan, June 20, 1987). This is because a battery (battery) is provided in the hood 50 at the front of the vehicle as shown in FIG.
60 and a motor (electric motor) 70
A battery (battery) 62 is mounted adjacent to the
The battery occupies a large volume, for example, the battery 62 projects between the rear seats 52,53. Regarding the battery, as a second example, “CAR GRAPHI
C "(December 1991, p. 174, published by Nigensha Co., Ltd.) introduces a vehicle having a battery mounted in the rear room.

[0003]

However, in the above-mentioned first conventional example, the inside of the hood, which can be originally used as a luggage storage space, is occupied by the battery, and the loading and unloading of the battery in relation to the opening is one. It must be done in units, which makes the work cumbersome. At the rear, there is a problem that the cabin space is narrowed due to the protruding battery. In the second example, almost all the floor surface of the rear part is occupied by the battery, and there is no room for the rear seats, or the space efficiency of the luggage space for cargo is extremely reduced, and the practical value of the luggage room is lost. I will.

[0004] For this reason, in order to mount the battery without sacrificing the cabin space or the like, it is conceivable to dispose the battery under the chassis frame. However, also in this case, in order for the battery below the chassis frame to satisfy the predetermined minimum ground clearance, the height of the chassis frame must be increased by almost the height of the battery. The ground clearance will be high. Accordingly, the present invention has been made in view of the above-mentioned problems, and does not sacrifice the cabin space or the like with the battery, does not extremely increase the ground clearance on the cabin floor surface, and facilitates the loading / unloading operation of the battery. It is an object of the present invention to provide a battery mounting structure for a vehicle.

[0005]

According to the present invention , fixed parts are provided at both ends of a battery case for mounting a battery.
Attach the fixing part to the support part provided on the chassis frame of the vehicle
A battery mounting structure for arranging the battery between members of the chassis frame , wherein the support portion includes a bracket extending from the chassis frame and having a vertical surface parallel to a direction connecting the both ends; The bracket comprises a rail having a first side wall in contact with the bracket and a vertical wall perpendicular to the first side wall, and the rail is provided on a first bolt hole provided in the bracket and correspondingly on the first side wall. The fixing portion is bolted to the bracket via a second bolt hole provided, and the fixing portion has a bulging portion protruding in a vertical wall direction from a second side wall facing the vertical wall of the battery case , The bulge is
Separating the upper wall of the chevron from the second side wall of the upper wall;
A plate having a mounting surface following an inclined surface that extends downward.
When the battery is placed on the upper surface of the battery , the mounting surface is parallel to the vertical wall.
A battery having a rod locking portion corresponding to the bulging portion.
A third bolt hole in which the holding member and the upper wall of the bulging portion are connected to each other by a rod and fixed to the battery case, and the fixing portion and the supporting portion are provided on the mounting surface; Corresponding to this, bolts are connected via fourth bolt holes provided in the vertical wall.

[0006]

Since the bulging portion of the fixing portion has a mountain-shaped upper wall, when the battery case on which the battery is mounted is set from below the chassis frame to the mounting position, the upper wall inclined surface serves as a guide, and rails and brackets are provided. The mounting work can be performed easily and smoothly without inconvenience, such as being stopped by hitting the surface. Since the mounting surface of the fixed part is bolted to the vertical wall of the rail and the rail is also bolted to the vertical surface of the bracket, the bolts are assembled from the horizontal direction, making work easier, and the bolts are used to shear gravity loads. The battery will not fall out even if loosening of volts occurs.

[0007] Further, since the rod is locked to the upper wall of the fixing portion, other separate parts are not required for fixing the rod. Further, since the fixing portion is formed of a plate-shaped ring-shaped bulging portion , vibration from the chassis frame side is absorbed. By making the bolt hole at the joint between the bracket and the rail a long hole, the position can be adjusted, and the positional error of the bracket on the chassis frame side, which is likely to vary, is absorbed.

[0008]

1 and 2 are a plan view and a side view showing an embodiment of the present invention. The vehicle has a vehicle body 2 mounted on a chassis frame 1. Chassis frame 1
Are two vertical frame members 5L, 5
In the front part and the rear part of R, the portion crossed by the left and right axles C and D is narrow, and the middle portion is wide.
Cross members 6 (6a, 6b, 6) provided at appropriate intervals
c, 6d), and has a symmetrical shape in front and back in plan and side views.

The chassis frame 1 has front and rear suspension upper arms 11L and 11R, suspension lower arms 12L and 12R, and an axle unit 13.
A suspension having L, 13R is assembled, and a vehicle body 2 is suspended via a chassis frame 1 with respect to a front wheel and a rear wheel. To this end, support brackets 7L, 7R for the suspension upper arm, support brackets 8L, 8R for the lower suspension arm, etc. are provided on the front wheel portions of the vertical frame members 5L, 5R. These are provided at positions symmetrical with respect to the center of the chassis frame 1 in the plan view in the front-rear and left-right directions. Front wheel 15L, 15R
Axle units are connected to steering linkages 18L, 18R for steering, and rear wheels 16L, 16R.
The R axle unit is prevented from rotating left and right by fixing members 19L and 19R connected to brackets 10L and 10R separately added to the chassis frame 1.

In the narrow portion at the front of the chassis frame 1, 2
A tandem motor 20 is provided between the vertical frame members 5L and 5R. The tandem motor 20 has two motors 21, 21 having the same configuration and their motor bodies 22, 22.
The two output shafts 26, 26, which are offset from the main axes F, F via the missions 24, 24, are arranged in a straight line, with the main axes F, F 26, 26 are the axles C of the front wheels
Approximately matched above.

The vertical frame members 5L and 5R and the cross member 6
In each section surrounded by c and 6d, a battery is housed at the same level of height as overlapping the vertical frame members 5L and 5R in a side view. The battery is mounted as a unit battery alone or as a battery set including a plurality of batteries, depending on the area of the partition. That is, in the center of the chassis frame 1 in the front-rear direction, the single battery 34a is accommodated between the cross members 6d, 6d with its longitudinal direction directed left and right. Battery groups 35a, 35a in which three batteries whose longitudinal directions are directed forward and backward are unitized integrally are symmetrically arranged.

In the narrow portion at the rear of the chassis frame 1, three batteries, which are adjacent to the battery set 35a with the cross member 6c interposed therebetween and whose longitudinal direction is directed to the left and right, are integrally unitized. Battery set 35b is disposed. Further, single batteries 34b, 34b are disposed at both front and rear ends of the chassis frame 1 with their longitudinal directions directed left and right.

The single batteries 34b at the front and rear ends are mounted on a battery receiver 36 provided on the chassis frame 1. FIGS. 3 to 5 show a battery mounting structure disposed between the axles C and D of the front wheels and the rear wheels, particularly at the front end thereof. Battery set 35 (35a, 35
In the case b), a plurality of unit batteries B are mounted on the battery case 38, and each of the battery cases is attached as a unit to the support portion 40 provided on the chassis frame 1 from the lower side of the vehicle.

The battery case 38 has a tray shape, extends in a plate shape from the upper edge of the side wall 38B at the front end thereof, forms a bulged portion 45A having a mountain- shaped upper wall which is folded forward and downward, and is further folded back. An end has a ring-shaped fixing portion 45 joined to the lower edge of the side wall 38B as a whole. The swelling portion 45A is connected to the vertical wall 4 of the rail following the inclined surface 45D of the upper wall.
It has a mounting surface 45E facing in parallel with 2A, and has a bolt hole 45C that matches a bolt hole 42B described later. Further, a rod hole 45B is provided in the upper wall of the fixing portion 45. When the battery is lifted from below to the mounting position, the inclined surface 45D first approaches a support portion described later as an upper wall of the fixing portion. A corner portion of the upper surface of the battery is held down by a battery holding member 46, and a rod 48 engaged with a rod hole 45B of the fixed portion and an end of the battery holding member 46 engage with a screw 48 formed at the tip of the rod. Are joined by

The support portion 40 is provided with brackets 41 extending left and right on the cross member 6 and extending in the front-rear direction and having a vertical surface 41B in the front-rear direction. Be composed. At this time, a bolt hole 42D formed in a side wall 42C of the rail 42 which is in contact with the vertical surface 41B of the bracket in an overlapping manner is formed as an elongated hole in the horizontal direction. Further, a bolt hole 42B is provided in a vertical wall 42A facing the front and rear direction of the rail.

In the state where the battery is assembled on the battery case 38, the bolt holes 45 of the fixing portion 45 are formed.
A bolt 43 is passed through C from a bolt hole 42 </ b> B of the rail 42 of the support part 40, and is fixed by a nut 44. The battery case 38 has a tray shape as described above. The bottom wall of the battery case 38 is a frame shape having a wide open window (not shown) to reduce the weight. Battery set 35
Similarly, the rear end of the battery is held down and fixed to the cross member. The bolt hole 42D, which is a long hole of the rail side wall 42C, may be a long hole at one of the front end and the rear end. With the configuration described above, the battery sets 35a and 35b
a and 38b. The single battery 34a is also assembled to the battery case 37 and attached similarly.

As shown in FIG. 4, the bracket 41 of the support portion 40 is provided with a flange 41A near the bottom surface thereof, and a battery protection cover 39 made of a lightweight plate material such as plastic is bolted to the bracket. In addition, the lower surface of the battery case 38 (37, 38a, 38b, etc.) is protected from stone splashes or the like. Thus, the battery case covered by the battery protection cover 39 forms the minimum ground clearance H1 of the vehicle.

The single battery 34a and the battery sets 35a, 35 attached to the chassis frame as described above
b, the upper surfaces of the respective batteries are made substantially coincident with the heights of the upper edges of the vertical frame members 5L and 5R at the center of the chassis frame 1 between the axles C and D. The vehicle body 2 on the chassis frame 1 is mounted with a gap T by a mounting member (not shown), and a gap is formed between the floor 3 and the upper surface of each battery, which is sufficient to avoid mutual contact.
It is used for connection between batteries and wiring to the tandem motor 20.

According to this embodiment, since the battery is housed in the section surrounded by the vertical frame member and the cross member, the battery is a combination of a single battery or a battery set of an appropriate size, and is easy to handle. is there. Further, since the battery case is attached to the chassis frame from the lower side of the vehicle, the loading and unloading operation can be easily performed in synergy with an appropriate size for handling. In particular, since the bulging portion of the fixing portion 45 provided in the battery case has an inclined surface 45D on its upper wall, the inclined surface 45D is set in the process of setting the unit between the rails of the support portion 40. Positioning can be performed very easily by performing a guide action.

Then, the bolt 43 is passed from the bolt hole 42B of the rail to the bolt hole 45C of the fixing portion and fixed in a state of being set at a predetermined height below the passenger compartment floor 3.
At this time, the bolt 49 for fixing the rail 42 to the bracket 41 is loosened, and after the rail and the battery case are fixed, the rail 42 is fastened and fixed to the bracket 41. Since the bolt hole 42D of the side wall 42C of the rail is a long hole, variation in the position of the bracket provided on the chassis frame is absorbed and adjusted. The bolts 43 and 49 for connecting the bracket and the rail, and the rail and the battery case are both used in a horizontal direction and receive a gravitational load in the shearing direction. Therefore, even if the battery is loosened, the battery may fall off. Absent. Further, since the fixing portion 45 has a plate-like ring shape, the fixing portion 45 has an effect of being elastic and absorbing vibration during traveling of the vehicle, preventing transmission of the vibration to the battery and avoiding deterioration.

Furthermore, since the fixing portion 45 locks the rod 47 for holding the battery in the rod hole 45B in cooperation with the battery pressing member, it is not necessary to provide a special member for fixing the rod, and the components are not required. Points are reduced. In addition, the bracket 41 is not limited to the cross member 6, but may be provided on the vertical frame members 5L and 5R, and the supporting portion and the fixing portion may be provided not in the front and rear but in the left and right direction. At this time, the vertical surface 41B of the bracket is parallel to the vehicle left-right direction.

Further, in the embodiment, since each battery has its upper surface substantially coincident with the upper edge of the vertical frame member and is stored and arranged at the same level overlapping the chassis frame, the sectional height of the vertical frame member or the cross member is set. When is greater than the height dimension of the battery, the battery has no effect on the ground height of the chassis frame. Even when the height of the battery is larger than the cross-sectional height of the vertical frame member or cross member, the battery case defines the minimum ground clearance H1 of the vehicle with the battery case because most of the height of the battery overlaps the chassis frame. After that, the ground clearance on the floor surface only increases by a slight dimensional difference. Further, the battery does not occupy the inside of the hood or protrude into the vehicle compartment to reduce the space. When a sealed battery is used, the clearance between the battery and the cabin floor can be further reduced because no clearance is required for the terminal, so that the ground clearance H2 of the cabin floor can be further reduced. it can.

In addition, as shown by phantom lines in FIG. 1, the vertical frame members 5L, 5R and the cross members 6b, 6
c, 6d as well as the vertical frame 5
An appropriate number of single batteries 34c are also arranged on the outer side along L and 5R, and the height thereof is set to the same level as overlapping the chassis frame 1 in the same manner as described above. Can be increased in quantity. In addition, although the embodiment has been described with respect to the vehicle including the chassis frame, the present invention is not limited to this, and is also applicable to a monocoque body type vehicle, and the body panel extending downward from the floor surface of the cabin in the monocoque body. Corresponds to members of a chassis frame such as a vertical frame member and a cross member, and in the present application, the chassis frame includes these body panels.

[0024]

As described above, in the present invention, the fixing portion of the battery case is fixed to the supporting portion of the chassis frame so as to be housed between the members of the chassis frame. Therefore, the battery is disposed under the chassis frame. In comparison with the above, there is no adverse effect such that the height of the floor surface greatly increases.
In addition, since it is mounted under the floor, it does not protrude into the cabin or the like to reduce its space, and has an effect that a wide effective space of the vehicle is secured without occupying a hood or a trunk room.

The supporting portion is constituted by a bracket and a rail having a vertical surface and a vertical wall, respectively, and the fixing portion is angled in a mountain shape.
Shall have a bulging portion having an upper wall and the subsequent mounting surface comprising a surface, the bracket and the rail, and the rail and the mounting surface it is so arranged that it it bolted, battery case mounted with the battery When the is set from the lower part of the chassis frame to the mounting position, the inclined surface of the upper wall serves as a guide, and the mounting operation can be performed easily and smoothly without inconvenience such as being stopped by hitting the rail or the bracket. In addition, in the above bolt connection, the bolt is assembled from the lateral direction, so that the work is easy, and the bolt receives the gravitational load by shearing. Never fall off.

Further, since the rod for fixing the battery to the battery case is locked on the upper wall of the fixing portion, the number of parts does not increase because the rod is fixed. Further, since the fixing portion has a plate-shaped upper wall connecting the mounting surface and the side wall of the battery case, vibration from the chassis frame is absorbed, and deterioration of the battery is prevented and the life is improved. By making the bolt hole at the joint between the bracket and the rail a long hole, the position can be adjusted, and the positional error of the bracket on the chassis frame side, which is likely to vary, is absorbed. As a result, it is not necessary to extremely increase the accuracy of assembling components on a long object such as a chassis frame.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a side view showing the embodiment.

FIG. 3 is a perspective view showing a battery set.

FIG. 4 is a diagram showing a structure for attaching a battery to a chassis frame.

FIG. 5 is a sectional view taken along the line AA in FIG. 4;

FIG. 6 is a diagram showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 chassis frame 2 body 3 cabin floor 5L, 5R vertical frame material 6a, 6b, 6c, 6d cross member 7L, 7R support bracket 8L, 8R support bracket 11L, 11R suspension linkage 12L, 12R axle unit 15L, 15R front wheel 16L, 16R Rear wheel 18L, 18R Steering linkage 19L, 19R Fixing member 20 Tandem motor 21 Motor 22 Motor body 24 Transmission 26 Output shaft 34a, 34b, 34c Single battery 35a, 35b Battery group 36 Battery receiver 37, 38, 38a, 38b Battery Case 38B Side wall 39 Battery protection cover 40 Support part 41 Bracket 41A Flange 41B Vertical surface 41C Bolt hole 42 Rail 42A Vertical wall 42B Bolt hole 42C Side wall 42D Bolt hole 4 Bolt 44 Nut 45 Fixed part 45A Swelled part 45B Rod hole 45C Bolt hole 45D Inclined surface 45E Mounting surface 46 Battery holding member 47 Rod 48 Nut 49 Bolt 50 Bonnet 52, 53 Rear seat 60, 62 Battery 70 Motor C, D axle F Main axis H1 Minimum ground clearance H2 Ground clearance on the cabin floor T Clearance

Claims (2)

(57) [Scope of request for utility model registration] 1. A battery case in which a battery is placed.
A fixed part is provided at the end, and the fixed part is attached to the chassis frame of the vehicle.
Attach it to the support provided to secure the space between the members of the chassis frame.
A battery mounting structure for arranging a battery, wherein the support portion includes a bracket having a vertical surface extending from the chassis frame and parallel to a direction connecting the both ends, a first side wall contacting the bracket with a surface, and a first side wall. A rail having a vertical wall perpendicular to the first side wall, wherein the rail has a first bolt hole provided in the bracket and a second bolt hole provided in the first side wall corresponding to the first bolt hole. The fixing portion has a bulging portion protruding in the direction of the vertical wall from a second side wall facing the vertical wall of the battery case ,
The bulging portion is formed from the upper wall of the chevron and the second side wall of the upper wall.
A mounting surface that follows a slope that extends downward as you move away
And the mounting surface is parallel to the vertical wall, and the battery is mounted on the upper surface of the battery.
A battery having a rod locking portion corresponding to the bulging portion.
A rod is used to connect between the holding member and the upper wall of the bulging portion.
A third bolt hole provided in the mounting surface, and a fourth bolt provided in the vertical wall corresponding to the third bolt hole. A battery mounting structure for a vehicle, which is bolted through a hole. 2. A method according to claim 1, wherein one of the two ends corresponds to a fixed portion.
Battery mounting structure of the first bolt hole and the second bolt holes vehicle according to claim 1, characterized in that there is a horizontal elongated hole in the support part that.