JPH09309343A - Motor driven vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently dispose batteries in the motor driven vehicle. SOLUTION: Individual batteries 21 through 36 are so disposed that the centroid of aggregated batteries 20 lies in the left side of the body center line B of the motor driven vehicle. On the contrary, the center line B of a driver's seat 6 is so disposed as to be located at the right side of the body center line B. This constitution thereby enables a space for disposing the individual batteries to be secured at the left side of the driver's seat 6 while the balance between the right and left is being secured when occupants are all seated, and also enables individual batteries to be provided in the vicinity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle that drives a motor to travel.

[0002]

2. Description of the Related Art As an arrangement structure of a collective battery of such an electric vehicle, there is, for example, Japanese Utility Model Laid-Open No. 6-18041. This arranges the driver's seat so that its center line overlaps with the center line of the vehicle body, and distributes individual batteries below the driver's seat, trunk, bonnet, etc. so that the center of gravity of the collective battery overlaps with the center line of the vehicle body. It has become.

[0003]

However, as described above, when the individual batteries are dispersedly arranged below the driver's seat, trunk, bonnet, etc., the high-voltage power cords connecting them become long, and Will be lost. On the other hand, in the arrangement only under the driver's seat, the number of individual batteries is limited, and the required number of batteries cannot be secured.

If the center line of the driver's seat is displaced from the center line of the vehicle body in order to improve the entry / exitability, the center of gravity of the occupant when riding is shifted to the driver's seat side, which impairs left-right stability.

[0005]

In order to solve the above-mentioned problems, an electric vehicle according to the present invention supports a pair of left and right front wheels and front wheels at the front and rear of a vehicle body frame, and a driver's seat is provided on the vehicle body frame. In an electric vehicle that uses a collective battery composed of a plurality of individual batteries supported by a frame as a power source, the driver's seat is provided so that its center line is offset to the left or right from the center line of the vehicle body, and the center of gravity of the collective battery is It is characterized by being arranged so as to be offset from the center line of the vehicle body in the direction opposite to the driver's seat.

Further, the collective battery may be composed of a main battery and a sub battery, the main battery may be arranged under the floor, and the sub battery may be arranged offset from the driver's seat as viewed from the center line of the vehicle body.

[0007]

According to the invention of claim 1, since a plurality of individual batteries can be provided close to each other, the cord of the high voltage system can be shortened and the electrical efficiency can be improved. .

Further, the center of gravity of the assembled battery is offset from the center line of the vehicle body, but the driver's seat is also offset from the center line of the vehicle body, so that the center of gravity shifts to the driver seat side when the occupant gets on the vehicle. It is possible to balance the overall weight of the vehicle body when riding on the left and right. In addition, since the driver's seat is displaced from the center line of the vehicle body, it is possible to get on and off smoothly.

According to the second aspect of the present invention, the main battery of the collective battery is arranged under the floor, and the sub battery having a different purpose of use is arranged offset to the side opposite to the driver's seat. The horizontal direction can be made flat, and good habitability can be maintained. In addition, since the main and sub batteries are distributed according to the purpose of use, maintainability is improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment will be described with reference to FIGS. FIG. 1 is a plan view of an electric vehicle to which the present invention is applied with a vehicle body cover removed, and FIG. 2 is a side view thereof.

In FIG. 2, the electric vehicle has a vehicle body frame 3 disposed between a front wheel 1 and a rear wheel 2 which are provided in pairs on each of the left and right sides, and a vehicle body 5 constituting a vehicle interior is mounted on the vehicle body frame 3. I support you. The body frame 3 holds a collective battery 20 described later.

A driver's seat 6 is provided in the passenger compartment, and a steering wheel 8 is arranged in front of the driver's seat 6. Driver's seat 6
Is supported on a seat leg 6a mounted on the body frame 3.

The power unit 14 supporting the rear wheel 2 is
The power unit 14 is swingably supported to the rear portion of the vehicle body frame 3 via the rear frame 10, and the power unit 14 is provided with an electric motor.

As shown in FIG. 1, the main skeleton of the vehicle body frame 3 is a side frame 1 extending in the front-rear direction on both sides of the vehicle body.
6, an auxiliary frame 17 arranged so as to surround the collective battery 20, and a central frame 18 extending in the front-rear direction near the center of the vehicle body.

Reference numeral 19 denotes a roof frame, which is provided in a pair of left and right in the front-rear direction so as to cover the upper portion of the vehicle compartment (the right side is omitted in FIG. 1), and the front and rear sides thereof are substantially U-shaped in a side view. The side frame 16 is connected to the front pillar portion 16a and the rear pillar portion 16b (see FIG. 2). In the following description, left and right are referred to as a left side and a right side, respectively, in the traveling direction of the vehicle.

A cross member 19a is provided at an intermediate portion of the roof frame 19, and a rearview mirror 19b is supported on the cross member 19a.

The collective battery 20 includes the individual batteries 21 to 25 arranged between the left auxiliary frame 17 and the central frame 18, the individual batteries 26 to 35 arranged between the left and right central frames 18, and the right battery. It is composed of an individual battery 36 arranged between the auxiliary frame 17 and the central frame 18.

For this reason, the center of gravity G2 of the entire assembled battery 20 is offset to the left of the vehicle body center line B. The individual batteries 21 to 36 are provided on the body frame 3 with a support pan (not shown) for a sheet metal press.
Is provided to support this. However, it is also possible to directly attach each to the body frame 3 side.

The collective battery 20 is connected to an electric motor provided in the power unit 14 by a power cord (not shown).

On the other hand, the driver's seat 6 is installed with the center line A passing through the center of gravity G1 of the occupant and the driver's seat 6 together offset to the right side of the vehicle body center line B, and the steering wheel 8 accordingly. Is also offset to the right of the center line B of the vehicle body. Further, a step floor 40 having a substantially L shape in a plan view is provided in front of the driver's seat 6 so that the passenger can get on and off from the right side of the vehicle.

The step floor 40 is lower in front of the driver's seat 6 in order to improve the entry / exitability, and no individual battery is arranged below it. The portion below the driver's seat 6 on the rear side of the step floor 40 is raised to allow the individual batteries 26 to 36 to escape.

Since no boarding / alighting is planned from the left side of the step floor 40, a space for arranging the individual batteries 24, 25 is provided, which is one step higher than the step floor 40.

Next, the operation of this embodiment will be described. FIG.
As is clear from the above, in the present embodiment, the center of gravity G2 of the assembled battery 20 is arranged so as to be displaced to the left side of the vehicle body center line B, while the driver seat 6 has its center line A whose vehicle body center line B. It is arranged so that it may be shifted to the right of.

Therefore, when the occupant is not in the vehicle, the center of gravity of the entire vehicle is displaced to the left, but when the occupant gets on the vehicle and the vehicle travels, the center of gravity is changed by the load of the occupant. The center of gravity of the entire body of the occupant when the occupant and the vehicle are combined is shifted to the right and
Will be overlaid.

Moreover, since a space for arranging the individual batteries can be secured on the left side of the driver's seat 6, it becomes possible to arrange the series of individual batteries 21 to 36 close to each other, and the power cord can be shortened. The power loss can be suppressed as much as possible.

In particular, in an electric vehicle, it is necessary to mount a large number of individual batteries on the vehicle, but the restrictions on the layout are reduced and the degree of freedom in design is increased. Further, since the driver's seat 6 is provided offset to the right, the passengers can get on and off smoothly.

The present invention is not limited to the above embodiment, and various modifications can be made, and the left and right sides of the center of gravity of the driver's seat 6 and the collective battery 20 can be interchanged. Further, the individual batteries of the collective battery 20 can be arranged in various ways, and the number thereof can be arbitrarily set as long as it is one or more. Further, the form of the collective battery 20 may be a single unit or may be individually arranged.
Both are possible.

The second embodiment will be described with reference to FIGS. 3 and 4. In addition, the same reference numerals are used for substantially the same parts as those in the first embodiment.

FIG. 3 is a plan view of the electric vehicle shown through the cabin 50, and FIG. 4 is a side view of the same. As is clear from these figures, the structure is such that a resin-made cabin 50 is supported on a vehicle body frame 51 arranged between the front wheels 1 and the rear wheels 2. It supports the main battery 60 of.

The vehicle body frame 51 has a rectangular frame portion 52 having a substantially quadrilateral shape and a shock absorbing portion 53 formed in front of the rectangular frame portion 52.

The main battery 60 provided below the step floor 55 includes individual batteries 61 to 75,
They are evenly arranged in 3 rows and 5 columns and arranged in the rectangular frame portion 52. The main battery 60 is connected to an electric motor provided in the power unit 14 by a power cord (not shown).

On the left side of the connecting portion between the rectangular frame portion 52 and the shock absorbing portion 53, a sub battery 80 for low voltage used for lighting and vehicle control is provided.

The driver's seat 6 is an occupant and the driver's seat 6
The center line A passing through the center of gravity G1 is set to the right of the vehicle body center line B. Further, the step floor 55 forming the floor surface of the cabin 50 is formed so as to be flat in the left-right direction as apparent from FIG.

In the second embodiment, the center of gravity G3 of the main battery 60 overlaps with the center line B of the vehicle body. However, since the sub battery 80 is provided on the left side of the center line B of the vehicle body, the main battery 60 and the sub battery 80 are provided. The center of gravity G2 of the entire assembled battery is the left side of the vehicle body center line B.

Therefore, the left-right balance of the entire vehicle body can be maintained when an occupant gets on the driver's seat 6 provided on the right side. Further, since the step floor 55 is formed flat in the left-right direction, good habitability can be maintained.

In addition, since the sub battery 80 projecting upward from the vehicle body frame 51 is located at the front left corner of the step floor 55 and is farthest from the foot, there is no adverse effect on the foot space.

The main battery 60 having a different purpose of use
Since it is separated into the sub battery 80 and the sub battery 80, maintenance can be individually performed according to each maintenance frequency, so that maintainability is improved.

Various modifications can be made in the second embodiment as well, and the driver's seat 6 and the auxiliary battery 80 can be interchanged between the left and right sides. Also, the main battery 60
It is not always necessary to arrange the individual batteries of (1) so that they are evenly arranged, and it is sufficient if the individual batteries are arranged so that the center of gravity G3 of the main battery 60 overlaps the center line B of the vehicle body.

Further, the number of individual batteries of the main battery 60 can be arbitrarily set as long as it is one or more. Further, the number of the sub-batteries 80 does not necessarily have to be one, and it suffices if the sub-batteries 80 are arranged so that their center of gravity is offset to the opposite side of the driver's seat 6.

[Brief description of drawings]

FIG. 1 is a plan view of an electric vehicle to which a first embodiment of the present invention is applied.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of an electric vehicle to which a second embodiment of the present invention is applied.

FIG. 4 is a side view of the same.

[Explanation of symbols]

3: body frame, 6: driver's seat, 20: collective battery, 40: step floor, 60: main battery, 8
0: Secondary battery

Claims (2)

[Claims] 1. A front and rear pair of left and right front and rear wheels of a vehicle body frame are supported, a driver's seat is provided on the vehicle body frame, and a collective battery composed of a plurality of individual batteries supported by the vehicle body frame is used as a power source. In an electric vehicle, the driver's seat is arranged so that its center line is offset to the left or right from the vehicle body center line, and the collective battery is arranged so that its center of gravity is offset from the vehicle body center line in the direction opposite to the driver's seat. A characteristic electric vehicle. 2. The assembled battery comprises a main battery and a sub battery, the main battery is arranged under the floor, and the sub battery is arranged offset from a side opposite to a driver's seat when viewed from the center line of the vehicle body. The electric vehicle according to claim 1.