JPH09109692A - Electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such an electric vehicl as being capable of preventing the entry of water into a battery frame during running in rain or on a road covered by water and effectively cooling batteries placed and stored in the battery frame. SOLUTION: An air suction port and an air exhaust port 71 for a battery frame in an electric vehicle are provided at a higher position than a floor 31. The air exhaust port 71 is provided in a rear fender 57 on the outside of the contact position of a weather strip 75 mounted on a door inner with the rear fender 57 when a door is closed, where an air passage from the battery frame to the air exhaust port 71 exists. Front and back sealing brackets 49, 79 are provided in a space 41 between a sill inner 37 and a sill outer 39, between both brackets the air passage is formed.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an electric vehicle,
More specifically, the present invention relates to an electric vehicle in which an air inlet and an air outlet for a battery frame on which a plurality of batteries are mounted are provided at a position higher than a floor.

[0002]

2. Description of the Related Art Conventionally, in an electric vehicle, a battery frame in which a plurality of batteries are mounted and housed is generally mounted on the lower surface of the vehicle body, and in order to prevent water from affecting the battery, When mounted on the lower surface of the vehicle body, the space in which a plurality of batteries are placed and housed is sealed.

In a battery frame, when a space in which a plurality of batteries are placed and housed is sealed, the temperature in the space rises and the temperature of the battery rises. Therefore, in order to cool the battery, air is blown into the space. An air inlet for sucking air is provided and an air outlet is provided.

[0004]

In the structure in which the air intake port and the air exhaust port are simply provided at the front and rear of the battery frame, the positions of the air intake port and the air exhaust port are low, and the battery frame is used when traveling in rainy weather. There is a problem that water easily gets inside.

Further, in a structure in which air is simply sucked into the space inside the battery frame from the air suction port and discharged from the rear air discharge port, a plurality of batteries cannot be cooled uniformly and the front side is not cooled. There is a problem that the battery on the rear side tends to become hotter than the above battery.

[0006]

The present invention has been made in view of the conventional problems as described above, and the invention according to claim 1 mounts a battery frame on which a plurality of batteries are mounted on the lower surface of the floor. In the electric vehicle, the air intake port and the air exhaust port for the battery frame are provided at a position higher than the floor.

According to a second aspect of the invention, in the invention according to the first aspect, the air outlet is located outside the position where the weather strip attached to the door inner abuts the rear fan when the door is closed. And an electric vehicle provided with an air passage from the battery frame to the air outlet.

According to a third aspect of the present invention, in the second aspect of the invention, front and rear sealing brackets are provided in a space between a sill inner and a sill outer forming a part of the vehicle body, and the seal is provided. An electric vehicle having an air passage formed in a region between brackets for a vehicle.

According to a fourth aspect of the invention, in the invention according to the first aspect, the battery frame is configured such that each of the front, rear, left and right frames framed in a rectangular shape is made of a hollow material forming an air passage, and left and right. Is an electric vehicle in which a plurality of air ejection ports for ejecting air into the battery frame are provided on the inner surface of each frame.

According to a fifth aspect of the invention, in the invention according to the fourth aspect, the diameters or densities of the plurality of air ejection ports are:
In the electric vehicle, the rear loading area is larger than the front battery loading area of the battery frame.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to FIGS. 1 to 3, a battery frame 3 for mounting and accommodating a plurality of batteries 1 is a front and rear frames 5F, 5R and left and right frames 7L, 7R made of a hollow extruded material. Has a quadrangular frame structure, and a battery cover 9 (see FIG. 1) is attached to the upper part of the space 2 accommodating the battery 1.
The open openings at the ends of the frames 5F, 5R; 7L, 7R are closed by a blind lid or the like.

On the front surface of the front frame 5F of the battery frame 3, there is integrally mounted an air duct 15 having a suction blower unit 11 and an air suction port 13 at a high position. An inlet 17 is provided for introducing the air sucked by the blower unit 11 into the battery housing space 2 of the battery frame 3.

A cover bracket 21 having a ventilation blower unit 19 is integrally attached to the upper surface of the rear frame 5R of the battery frame 3. Although not shown in detail, the ventilation blower unit 19
Are appropriately connected to the storage space 2 in order to ventilate the sealed battery storage space 2. Further, the rear frame 5R is provided with an inlet 25 for introducing the air discharged from the ventilation blower unit 19 into the hollow portion 23 (see FIG. 2), and the air in the hollow portion 23 flows out. An outlet 27 is provided.

Battery frame 3 having the above structure
In order to use the space portion 34 of the rear side member 33 that constitutes the vehicle body as an air passage when the electric vehicle 29 is attached to the lower portion of the floor member 31 of the electric vehicle 29, the communication is appropriately performed with the communication port 35 provided in the rear side member 33. To be installed.

In order to utilize the space 41 between the sill inner 37 and the sill outer 39 which form the vehicle body of the electric vehicle 29 as an air passage, as shown in FIG. 5D, the rear side member 33 and Sill inner 37
Both ends of the extension rear side member 43 having a U-shaped cross section are integrally connected between and by. The upper portion of the extension rear side member 43 is closed by the floor member 31.

The extension rear side member 43 is provided at a position close to the communication port 35 provided in the rear side member 33. 37 is provided with openings 45 and 47, respectively.

The sill inner 37 and the sill outer 39
In order to close the front opening of the space 41 between
In the space 41, a sealing bracket 49 (see FIG.
FIG. 5 (F) is provided. The seal bracket 49 is integrally attached to the sill inner 37 by welding or the like on the front side of the opening 47 of the seal inner 37. An appropriate seal member 51 (see FIG. 5F) provided on the sealing bracket 49 is in contact with the inner surface of the sill outer 39.

The sill inner 37 and the sill outer 39
The space portion 41 between the wheel house inner part 53 and the wheel house outer part 55 that form the wheel house
5 communicates with a space 59 (see FIG. 5 (A)) between the wheel house outer 55 and the rear fan 57. The space 59 includes the wheel house outer 55, the rear fan 57, and the rear pillar inner 61.
It communicates with the space 63 (see FIG. 5C) between and.

The rear ender 57 is formed in a stepped shape corresponding to the shape of the edge of the door outer 67 and the door inner 69 of the door inner 69 constituting the door 65 (see FIG. 5B) of the electric vehicle 29. There is. An air discharge port 71 for discharging the air from the space 63 is formed in the stepped portion,
An outlet cover 73 is attached to the air outlet 71.

When the door 65 is closed, the air outlet 71 is located outside (rear side) of the position where the weather strip 75 attached to the door inner 69 abuts the rear fan 57, and the door 65 is closed. Sometimes, it is provided at a position close to a clearance 77 generated between the outer edge of the door 65 and the rear fan 57.

In order to block the communication of the space 63 between the wheel house outer 55, the rear fan 57 and the rear pillar inner 61 to the outside, the space 63 is cut off.
A sealing bracket 79 (see FIGS. 4 and 5B) is provided inside. The sealing bracket 79 closes the peripheral portions of the rear pillar inner 61, the rear fan 57 and the wheel house outer 55 in close contact with each other to block the communication of the space 63 to the outside, and is welded to the rear pillar inner 61. Etc. are integrally attached.

The seal bracket 79 is in close contact with the rear ender 57 and the wheel house outer 55 via an appropriate seal member 81 provided on the peripheral edge of the seal bracket 79.

In the above structure, when the suction blower unit 11 is driven, air is sucked from the air suction port 13 of the air duct 15, and the battery frame 3 passes through the inlet 17 provided in the front frame 5F of the battery frame 3. The battery 1 is introduced into the battery housing space 2 and the battery 1 is cooled.

When the ventilation blower unit 19 is driven, the air in the battery housing space 2 of the battery frame 3 is discharged to the outside. At this time, the air discharged from the ventilation blower unit 19 flows into the space portion 34 of the rear side member 33 from the hollow portion 23 of the rear frame 5R, and the air is discharged between the extension rear side member 43, the sill inner 37 and the sill outer 39. From the space 41 of the wheel house outer space 55 to the rear fan 57 and the space 63 between the wheel house outer 55, the rear fan 57 and the rear pillar inner 61 to the air exhaust port 7.
1, discharged from the outlet cover 73 to the outside.

The air discharge port 71 is provided at a position close to the clearance 77 (see FIG. 5B) generated between the outer edge of the door 65 and the rear ender 57 when the door 65 is closed. When the electric vehicle 29 is running,
Since the portion of the clearance 77 becomes negative pressure and the suction force acts, the air is effectively discharged from the air discharge port 71.

As will be understood from the above description, the air intake port 13 and the air exhaust port 71 are provided at a position higher than the floor member 31, so that the vehicle travels in the rain or on a flooded road, for example. In this case, it is possible to prevent water or the like from entering the battery frame 3.

Further, since the suction blower unit 11 sucks the outside air and the ventilation blower unit 19 discharges the air in the battery frame 3, forced ventilation is provided and the battery 1 is cooled effectively. Is something that can be done.

Further, the air passage extending from the ventilation blower unit 19 to the air discharge port 71 has an electric vehicle 2
Since a part of the vehicle body in 9 is used, the structure is simple and can be easily implemented.

6 and 7 show another embodiment of the battery frame. In this battery frame 3A, a hollow portion (not shown) in the front frame 5A
And the hollow portions 23A of the left and right frames 7A and 7B communicate with each other, and the air from the inlet 17A of the front frame 5A is guided to the hollow portions 23A.

In the battery housing space 2A of the battery frame 3A, a plurality of battery mounting areas 87A to 87A are formed by a plurality of horizontal frames 83 and vertical frames 85.
It is divided into 87D. The horizontal frame 83 and the vertical frame 85 are made of an extruded material having a hollow portion, and the hollow portion communicates with the hollow portions 23A of the left and right frames 7A and 7B and the hollow portions of the front and rear frames 5A and 5B. There is.

Each of the battery mounting areas 87A to 87D
In order to cool the battery placed and housed in, the plurality of air ejection ports 89 communicating with the hollow portion 23A are provided on the inner side surfaces of the left and right frames 7A, 7B. The air ejection port 8 is provided so that air is uniformly ejected to the batteries placed and accommodated in the battery placement areas 87A to 87D.
It is preferable that the diameter or the density of the battery 9 is larger than the diameter or the density of the battery mounting area 87A on the front side of the battery frame 3A, and the diameter or the density of the battery mounting area 87D on the rear side of the battery frame 3A.

Further, each of the horizontal frames 83 and the vertical frames 85 is also provided with a plurality of air ejection ports 91 for ejecting air to the battery mounting areas 87A to 87D.

According to the above construction, the air introduced from the inlet 17A of the front frame 5A is supplied to the left and right frames 7A,
Each air ejection port 8 is guided to the hollow portion 23A in 7B.
9 blows air toward each battery in each battery mounting area 87A to 87D, and from each air ejection port 91 in each horizontal frame 83 and vertical frame 85 to each battery in each battery mounting area 87A to 87D. Air is ejected toward the battery to cool the battery.

At this time, the front battery mounting area 87A
Of the diameter of the air ejection port 89 corresponding to the rear battery mounting area so that, for example, the diameter of the air ejection port 89 corresponding to the rear battery mounting area 87B is larger than that of the air ejection port 89 corresponding to. Since the larger one is formed, the air is blown out to the battery mounting areas 87A to 87D almost uniformly, and the cooling of the batteries in the battery mounting areas 87A to 87D is performed uniformly. Will be seen.

[0035]

As can be understood from the above description, the invention according to claim 1 is an electric vehicle in which a battery frame on which a plurality of batteries are mounted is mounted on the lower surface of the floor. Since the air intake port and the air exhaust port are provided at a position higher than the floor, for example, when driving on a rainy day or on a flooded road, water or the like may enter the battery frame from the air intake port or the air exhaust port. It is possible to prevent entry.

According to a second aspect of the invention, in the invention according to the first aspect, the air outlet is located outside the position where the weather strip attached to the door inner abuts the rear fan when the door is closed. The air passage from the battery frame to the air exhaust port is provided on the vehicle, so that the negative pressure is applied to the clearance between the outer edge of the door and the rear fan when the vehicle is running, and the air is exhausted. Since the air is sucked from the outlet, the air can be efficiently discharged.

According to a third aspect of the present invention, in the second aspect of the invention, front and rear sealing brackets are provided in a space between a sill inner and a sill outer forming a part of the vehicle body, and the seal is provided. Since the air passage is formed in the region between the brackets for vehicle,
Since the part is used as an air passage, it has a simple structure and is easy to implement.

According to a fourth aspect of the invention, in the invention according to the first aspect, the battery frame is configured such that each of the front, rear, left and right frames which are framed in a rectangular shape is made of a hollow material forming an air passage, and the left and right sides are formed. Since the inner side surface of each frame is provided with a plurality of air ejection ports for ejecting air into the battery frame, the constituent members of the battery frame can be used as air passages, and the structure is simple and the battery Air in the frame can be ejected uniformly, and the battery can be uniformly cooled.

According to a fifth aspect of the invention, in the invention according to the fourth aspect, the diameters or densities of the plurality of air ejection ports are:
Since the rear mounting area is larger than the front battery mounting area of the battery frame, air can be blown out uniformly to each battery mounting area, and the battery should be cooled uniformly. Is something that can be done.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram conceptually showing a main part according to an embodiment of the present invention.

FIG. 2 is an explanatory view seen in the direction of arrow II in FIG.

FIG. 3 is a perspective explanatory view showing a configuration of a battery frame.

FIG. 4 is a perspective view of a main portion showing the configuration of an air passage.

5 is an end face explanatory view taken along the arrows A, B, C, D, E, and F in FIG.

FIG. 6 is a perspective explanatory view showing another example of the battery frame.

7 is a cross-sectional explanatory view of a frame in the battery frame shown in FIG.

[Explanation of symbols]

 1 Battery 3 Battery Frame 11 Intake Blower Unit 13 Air Inlet 15 Air Duct 17 Inlet 19 Ventilation Blower Unit 21 Cover Bracket 23 Hollow 33 Rear Side Member 34 Space 37 Sill Inner 39 Sill Outer 41 Space 43 Extension Rear Side Member 49 Seal Bracket 57 Rear Fender 59, 63 Space 65 Door 69 Door Inner 71 Air Outlet 73 Outlet Cover 79 Seal Bracket

Claims (5)

[Claims] 1. An electric vehicle having a battery frame on which a plurality of batteries are mounted on a lower surface of a floor, wherein an air inlet and an air outlet for the battery frame are provided at a position higher than the floor. A characteristic electric vehicle. 2. The battery according to claim 1, wherein the air discharge port is provided in the rear fan outside the position where a weather strip attached to the door inner contacts the rear fan when the door is closed, and the battery is provided. An electric vehicle comprising an air passage from a frame to the air outlet. 3. The invention according to claim 2, wherein front and rear sealing brackets are provided in a space between a sill inner and a sill outer forming a part of a vehicle body, and air is provided in a region between the sealing brackets. An electric vehicle characterized by forming a passage. 4. The battery frame according to claim 1, wherein each of the front, rear, left and right frames framed in a rectangular shape is made of a hollow material forming an air passage, and is formed on the inner surface of each of the left and right frames. , An electric vehicle characterized by comprising a plurality of air ejection ports for ejecting air into the battery frame. 5. The invention according to claim 4, wherein the diameter or density of the plurality of air ejection ports is larger in the rear mounting area than in the front battery mounting area of the battery frame. A characteristic electric vehicle.