JP3349924B2 - Wiring structure of electric vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure of a power supply line drawn from a power supply (battery) for driving an electric vehicle.

[0002]

2. Description of the Related Art In an electric vehicle, as shown in FIG. 4, positive and negative power supply lines (3) and (4) drawn from a cabin (1) and a battery (2) under a floor are connected to a motor room ( 5) is connected to a controller (6) disposed therein, and the output from the controller (6) controls and drives a drive motor (8) disposed near the front axle (7). Conventionally, it is common to draw positive and negative power supply lines (3) and (4) from the front surface (11a) of the battery case (11), and the controller (6) usually controls the vehicle width near the motor (8). Since the power supply lines (3) and (4) are arranged at the center in the vehicle direction, the positive and negative electrodes are also integrated and connected to the controller (6) through the center in the vehicle width direction.

[0003]

By the way, in the motor room, various kinds of accessories are arranged in addition to the drive motor and the controller, and wirings for connecting them are routed in a complicated manner. Therefore, it is difficult to identify the feeder,
There was a possibility of incorrect wiring at the time of battery maintenance and inspection.

Accordingly, an object of the present invention is to provide a wiring structure of an electric vehicle which can prevent erroneous wiring of a power supply line at the time of maintenance and inspection.

[0005]

In order to achieve the above object,
In the present invention, one of the positive electrode power supply line and the negative electrode power supply line of the battery disposed under the floor between the front and rear axles is provided on one side of both sides in the vehicle width direction of the battery case, and the other is provided on the other side. The drawer and the two feeder wires that are drawn out are introduced into the motor room via spaces surrounded by the left and right fender outer plates and the fender inner plate, respectively.

In this case, it is desirable to introduce a power supply line through a space surrounded by the fender outer plate and the fender inner plate into the motor room from a part of the space closer to the partner axle than the tire center.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, according to the present invention, of the two side surfaces (11b) and (11c) of the battery case (11), the positive power supply line (3) is connected from one side surface (11b) to the other side surface (11b). 11
Pull out the negative power supply line (4) from c). The battery case (11) is installed below the cabin (1) between the front and rear axles with the lead-out surfaces (both side surfaces 11b and 11c) of the power supply lines (3) and (4) facing the vehicle width direction indicated by arrows.

As shown in FIG. 2, in the present invention, the positive and negative power supply lines (3) and (4) from the battery (2) are respectively extended forward along the left and right sides of the vehicle body, and the front fender inner plate (13) is provided. And the tire outer peripheral space (15) surrounded by the fender inner plate (13) and the front fender outer plate (14)
After that, the fender inner plate (13) is again penetrated and introduced into the motor room (5) accommodating the controller (6) and the drive motor (8) (see FIG. 4).
One of the positive and negative power supply lines (3) and (4) is introduced into one of the left and right tire outer peripheral spaces (15), and the other is introduced into the other space (in the drawing, the positive power supply line (3)). ) Is introduced into the tire outer peripheral space on the left side of the vehicle body, and the negative power supply line (4) is introduced into the tire outer peripheral space on the right side of the vehicle body. In addition, (17) in the figure is a hood that covers the motor room (5).

As shown in FIG. 3, the tire outer peripheral space (15)
The power supply lines (3) and (4) passing through are located above the space (15) and at the other axle (rear axle) than the tire center (O).
On the side, that is, behind the tire center (O) (including on the tire center), penetrates the fender inner plate (13),
It is introduced into the motor room (5). Introducing the motor room from behind the tire center (O) in this way is to connect the controller (6) with the shortest distance and to prevent excessive force from being applied to the power supply lines (3) and (4) even after the connection. In order to

With the above configuration, even when the power supply lines (3) and (4) need to be detached from the battery terminal during maintenance and inspection of the battery (2), the positive and negative electrodes of the battery terminal and the positive power supply line ( Since 3) and the negative power supply line (4) are separated from each other, they can be easily identified, and the possibility of erroneous wiring is reduced.

In the above description, the case where the motor room (5) is provided on the front side is exemplified. However, the same applies to the case where the motor room is provided on the rear side or both the front side and the rear side. The present invention can be applied.
Further, the present invention can be applied not only to a vehicle body having a frameless structure as shown in the drawing but also to a vehicle body having a structure having a frame.

[0013]

According to the present invention, since the positive electrode and the negative electrode of the battery terminal and the positive electrode power supply line and the negative electrode power supply line are separated to the left and right, these can be easily identified. Therefore, the possibility of erroneous wiring during maintenance and inspection of the battery is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a battery used in the present invention.

FIG. 2 is an exploded perspective view showing a structure of a front portion of the vehicle body.

FIG. 3 is a longitudinal sectional view showing a wiring structure according to the present invention.

FIG. 4 is a longitudinal sectional view showing a conventional wiring structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabin 2 Battery 3 Power supply line (positive electrode) 4 Power supply line (negative electrode) 5 Motor room 6 Controller 7 Front axle 8 Drive motor 11 Battery case 11b Side surface 11c Side surface 13 Fender inner plate 14 Fender outer plate 15 Tire outer space (space) 16 tire

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60K 1/00-1/04 B60L 1/00 B60R 16/02 620

Claims (2)

(57) [Claims] 1. One of a positive electrode power supply line and a negative electrode power supply line of a battery disposed below the floor between the front and rear axles is connected to one side of both sides in the vehicle width direction of the battery case, and the other is connected to the other side. A wiring structure for an electric vehicle, wherein each power supply line is drawn out and introduced into a motor room through a space surrounded by left and right fender outer plates and a fender inner plate. 2. A power supply line via a space surrounded by a fender outer plate and a fender inner plate is introduced into a motor room from a part of the space closer to a partner axle than a tire center. The wiring structure of the electric vehicle according to the description.