JP2758348B2 - Battery carrier cover 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 cover structure for a battery carrier in an electric vehicle.

[0002]

2. Description of the Related Art Conventionally, a plurality of batteries Bt in an electric vehicle of this type have been mounted indoors. However, they are mounted on the lower surface of an outdoor floor so that they can be easily attached and detached during maintenance (see FIG. 9). As shown in FIG. 10, the battery carrier 1 for storing a plurality of batteries Bt is formed in an upwardly open box shape for storing a plurality of batteries Bt, for example, two rows in a longitudinal direction. The battery Bt is stored in the four circumferences of the battery Bt. As shown in the drawing, each of the two left and right batteries Bt has a steel restraining bar 3 having a substantially rectangular cross section for pressing and fixing the upper side thereof, and both ends of the restraining bar 3 are substantially L-shaped. Shaped steel bracket 4
And is fixed to the flange portion 2 by screws. In addition, because it is mounted on the floor underside,
In order to prevent electric leakage, electric shock, etc. due to muddy water or the like, as shown in FIG. Since the battery Bt is heated during charging / discharging of the battery and its performance is deteriorated, a fan 7 for introducing outside air is mounted on the front side of the cover 5 to blow air and cool.

[0003]

However, in the storage structure of the battery Bt, the air introduced into the battery carrier 1 by the fan 7 is restricted to the first holding bar 3.
And the air flows back and forth between the battery cases, and the air flowing on the upper surface side, which is the main part of the battery Bt, is small, and the cooling effect is deteriorated, thus deteriorating the battery performance. In addition, many steel holding bars 3
Further, since it is fixed by the bracket 4, there is a problem that the weight is increased and the weight is reduced, and the number of assembling steps is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to eliminate the conventional steel restraining bar and bracket for a battery and to provide air supplied by a fan or natural suction. It is an object of the present invention to provide a battery carrier cover structure capable of improving the cooling effect by uniformly contacting substantially the entire battery in the carrier.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problem, the present invention provides a battery carrier cover for storing a plurality of batteries in a plurality of rows at predetermined intervals and covering the upper part of the battery carrier. An air passage is formed in the upper part between the batteries in the direction of air introduction, and a pressing recess for pressing and fixing the upper surface near the end of the battery is formed in the air passage, and furthermore, the air passage is parallel to the air passage. A rectifying air passage is formed on the upper surface side of the battery in the shape of a dashed line, and a series of air flows between the pressing recesses of the rectifying air passage .
This is a battery carrier cover structure having a rectifying portion for providing rectification, contraction, and diffusion .

[0006]

According to the above construction, air flows between a plurality of batteries, and a series of rectification, contraction, and diffusion are given to the air flowing over the batteries by a rectification unit to cool the batteries.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings.
2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB of FIG. 1. The carrier 11 is made of, for example, a thermosetting resin (non-curable resin). (Saturated polyester) and glass fiber mixed with reinforced resin.
It is formed in a substantially rectangular box shape having a bottom portion 12 and capable of accommodating a plurality of (in this example, 12) batteries Bt, and a flange portion 14 is formed on four sides of the side wall 13. In addition, on the bottom 12 side, a ridge 15 is provided in a lattice shape so that the battery Bt can be fitted therein.
The battery Bt is housed in a protruding shape at a predetermined height from the flange portion 14 in this fitted state. The carrier 11 thus formed is covered with a battery carrier cover 21 (hereinafter simply referred to as a cover).

The cover 21 is made of the same reinforced resin as the carrier 11, and the cover 21 is
Is formed in substantially the same shape as the planar shape of the bottom portion 12.
Side walls 23 of a predetermined height are provided around
a, 23b, 24a, and 24b are formed.
A flange portion 25 overlapping with the flange portion 14 of the carrier 11 is formed on the four circumferences of a, 23b, 24a, and 24b to form a shallow-bottomed lid, and a plurality of the sidewalls 24a at predetermined intervals (this example). In this example, three fans are attached.) Fan 8
Is installed. The cover 21 thus formed
As shown in FIG. 1, a rectifying pressing recess 26 is provided on the upper portion of each battery Bt along the center line c of each row B1, B2, B3, B4 of the batteries Bt between the side walls 23a, 23b.
Are respectively recessed.

Next, in order to clarify the rectifying depression 26, a description will be given with reference to FIGS. 2, 3 and 4 showing cross sections taken along lines AA, BB and CC in FIG. AA in FIG.
2 shows a cross section at a position slightly deviated from the center line c of the battery Bt. The position of the end portion Ba of the battery Bt is substantially equal to the thickness of the upper surface 22a of the lid 22 and has a step. Steps 27a, 27 of substantially rectangular shape
b is formed, and a rectifying pressing concave portion 26 is formed between the step portions 27. Ends of the step portion 27a and both ends of the step portion 27b are provided with side pieces 28 hanging down at a predetermined length, and the lower ends of the side pieces 28 are opposed to each other at a predetermined distance from the upper surface of the battery Bt. The pressing recess 29 is formed with a piece, and a bottom portion 38 of the rectifying portion 35 located slightly above is connected between the pressing recesses 29. This pressing recess 29
An elastic member 30 having a predetermined thickness that allows the upper surface of the battery Bt to be pressed is adhered to the lower surface of the battery Bt. Also,
A vertical wall 37 of the rectifying portion 35 is formed on the right side of the center line c between the step portions 27 (downstream side in FIG. 1).

FIG. 3 is a sectional view taken along the line BB of FIG.
4A and 4B are cross-sectional views of the pressing recess 29. Wall portions 31a and 31b are formed upstream and downstream of the pressing recess 29, respectively.

FIG. 3, which is a cross section taken along line C--C in FIG. 1, shows a cross section of the rectifying section 35.
9, a rectifying plate 36 is formed between the wall portions 31a and 31b, and is inclined downward at a predetermined angle downstream from a predetermined position on the wall portion 31a side. Is connected to a vertical wall 37 substantially aligned with the downstream wall 31b of the pressing recess 29 at a predetermined interval t from the upper surface of the battery Bt, and a bottom 38 is formed at this connection,
The right and left sides of the bottom portion 38 are connected to the pressing recesses 29, and the rectifying pressing recesses 26 are formed in an upper opening and a lower closed shape. With the cover 21 attached, as shown in FIG. A through-air passage 40 between the batteries Bt and a rectifying air passage 41 on the upper surface of the battery Bt are formed, and a space 42 is formed between the rectifying pressing recesses 26 in a direction orthogonal to the flow of air.

Since the cover 21 of the present embodiment is constructed as described above, the air introduced from the fan 7 during the running of the vehicle (described mainly with reference to FIG. 4), One part is introduced into the fitting ventilation path 40, and the other is a rectification ventilation path 41.
5, the air is rectified and reduced in flow while being guided by the inclined rectifying plate 36, and the reduced air is supplied to the battery Bt. The gas is ejected and diffused into the space 42 next to the space t between the upper surface and the bottom 38 of the rectification unit 35. The diffused air is mixed with the air in the fitting ventilation passage 40, and the mixed air is reduced again while being rectified by the rectifying plate 36 of the next rectifying ventilation passage 41, and is then formed in the next space 42. Thereafter, a series of rectification, contraction, and diffusion are repeated and then discharged downstream.

A part of the air introduced into the battery carrier 1 as described above is introduced into the fitting ventilation passage 40 and flows between the batteries Bt to cool mainly the case. Rectification, contraction, and diffusion are repeated and flow mainly on the upper surface side of the battery Bt. Therefore, the air flowing through the two passages 40 and 41 effectively cools the battery Bt. And its performance can be maintained and secured. Further, since the battery Bt is fixed by the pressing recess 29 formed integrally with the cover 21, the conventional steel restraining bar 4 and bracket 5 can be eliminated, and the weight can be reduced. The number of steps for assembling the battery Bt can be reduced.

Next, FIGS. 6, 7 and 8 show another embodiment of the rectifying section 35. The rectifying section 45 shown in FIG. 6 forms a rectifying plate 46 in a curved shape as shown in FIG. At the lower end of the vertical wall 37 at the bottom of the joint, a distance t between the bottom 38 and the upper surface of the battery Bt is within a predetermined range h in the center.
The notch-shaped large passage 47 is formed at a larger interval t1.

The rectifying section 50 shown in FIG. 7 has a rectifying plate 51 and a vertical wall 52 formed in a substantially V-shape as shown in FIG. Like the rectifying portion 45, the notch-shaped large passage 47 is formed in a predetermined range h at the center of the rectifying portion 45 at an interval t1 larger than the interval t between the bottom portion 38 and the upper surface of the battery Bt.

Since the rectifying portions 45 and 50 formed as described above form passages with the interval t and the interval t1, the rectifying plates 46 and 5 are provided.
The air passing through the interval t1 of the air rectified and condensed and guided to 1 is diffused into the space 42 on the downstream side, and the air passing through the interval t is separated into two directions ejected between the downstream batteries Bt.
The air flowing through the gap t moves the air which tends to stagnate between the downstream batteries Bt, thereby improving the cooling effect. By setting the notch-shaped interval t1 and the width h to appropriate dimensions, the amount of air passing through the intervals t and t1 can be balanced.

The rectifying portion 55 shown in FIG. 8 is provided with a side plate 56 formed at a predetermined angle α on the upstream side instead of the left and right side pieces 28a of the left and right pressing recesses 29, and the diverging portion 55 shown in FIG. A rectifying plate 57 having a flat shape (which may be formed slightly inclined downstream) is provided between the side plates 56, and a narrow passage 58 is formed toward the downstream side. In this case, the air is widely introduced, and the air is contracted at the outlet side to form a space 42.
Can be diffused.

[0018]

According to the present invention, since it is constructed as described above, since the battery fixing was configured to be fixed by the pressing recess formed integrally with the cover, the conventional steel suppressing cover and bracket This can be eliminated and the weight can be reduced, and the number of steps for assembling the battery can be reduced. In particular, a part of the air introduced into the battery carrier is introduced into the fitted ventilation passage to mainly cool the case, and the air flowing through the main rectification ventilation passage repeats a series of rectification, contraction, and diffusion. It flows mainly on the top side of the battery and
Since some of the air passing through the rectifying portion of the air passage is intended to provide a motion stagnant prone air between the downstream side of the battery, since the battery is effectively cooled by air flowing through the two passages In addition, the battery temperature control and its performance can be maintained and secured.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where a battery carrier cover is attached to a battery carrier.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is a partial perspective view of FIG.

FIG. 6 is a perspective view showing another aspect of the rectifying unit.

FIG. 7 is a perspective view showing another embodiment of the rectifying unit.

FIG. 8 is a perspective view showing another mode of the rectifying unit.

FIG. 9 is a schematic view showing the mounting of the battery carrier on the lower surface of the floor outside the vehicle compartment.

FIG. 10 is a perspective view showing attachment of a battery housed in a conventional battery carrier.

FIG. 11 shows a battery carrier and a battery carrier.
It is a partial sectional view in the state where a cover was attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Battery carrier 21 Battery carrier cover 29 Pressing concave part 35, 45, 50, 55 Rectifying part 36, 46, 51, 57 Rectifying plate 40 Fitting ventilation path 41 Rectifying ventilation path

Claims (1)

(57) [Claims] 1. A battery carrier cover for storing a plurality of batteries in a plurality of rows at predetermined intervals and covering the upper portion of a battery carrier, wherein a ventilation passage is provided at an upper portion between the batteries in a direction of air introduction of the cover. Forming
A press concave portion for pressing and fixing the upper surface near the end of the battery is formed in the fitted ventilation path, and a rectifying ventilation path is formed on the upper surface side of the battery in parallel with the fitted ventilation path,
A battery carrier cover structure having a configuration in which a rectifying portion for applying a series of rectification, contraction, and diffusion to the passing air is formed between the pressing concave portions of the rectification ventilation passage.