JPH09306437A - Sealed lead acid battery and sealed lead acid battery unit - Google Patents

Abstract

(57) [PROBLEMS] To provide a sealed lead-acid battery having a structure capable of preventing expansion of a battery case and allowing good heat dissipation. SOLUTION: Each side surface 1a, 1b of a battery case 1 is provided with a plurality of vertically-oriented protrusions 2, 3 which are vertically oriented in use. On the wide side surface 1a of the battery case 1, a plurality of laterally projecting portions 4 which are laterally arranged in use are provided so as to intersect the vertically projecting portions 3 at different positions. Between the adjacent vertical protrusions 3, the horizontal protrusions 4 are provided with vertical separating portions 5, and the vertical passages 8 that are vertically continuous between the adjacent vertical protrusions 3 are provided.
Is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode gas absorption type sealed lead acid battery and a sealed lead acid battery unit.

[0002]

2. Description of the Related Art Conventionally, a sealed lead-acid battery of the cathode gas absorption type has 2V as a unit, and when increasing the voltage, connect the cells in series, and when increasing the battery capacity, connect the cells in parallel. Used in multiple cells.

When these sealed lead acid batteries are used, these sealed lead acid batteries are often arranged in close contact in order to make the installation location compact.

Acrylonitrile / butadiene / styrene resin (hereinafter referred to as ABS resin) is widely used as the battery case material of this type of sealed lead-acid battery, but the battery case is difficult due to the difficulty of the sealing technology. Polypropylene resin (hereinafter referred to as PP resin) was not used as a material.
This sealing technology has also advanced, and PP has the advantages of price and chemical resistance.
The use of resin is increasing.

However, the PP resin has a lower mechanical strength than the ABS resin, and in order to increase the mechanical strength of the battery case, a protruding portion is partially provided on the outer surface of the battery case, and the battery is made of a metal frame. Storing inside the body prevents the battery case from swelling.

[0006]

As described above, the cathode gas absorption type sealed lead-acid battery is used in a close contact state, so that the heat dissipation is poor and the battery is used when the ambient temperature is high or ventilation is insufficient. The temperature of may rise excessively, which may lead to heat escape.

As a countermeasure against this, if a protruding portion is provided on the battery case,
There is some effect because the heat dissipation area increases, but simply adding a protrusion was not sufficient as a countermeasure.

An object of the present invention is to provide a sealed lead acid battery having a structure capable of preventing the battery case from swelling and allowing good heat dissipation.

Another object of the present invention is to provide a sealed lead-acid battery unit having a structure capable of preventing the battery case from swelling and allowing good heat dissipation.

[0010]

The inventions set forth in claims 1 and 2 improve a cathode gas absorption type sealed lead-acid battery.

In the sealed lead-acid battery according to the first aspect of the invention, a plurality of vertically projecting portions that are vertically oriented in a used state are provided on each side surface of the battery case, and at least a wide side surface of the battery case is individually provided. A plurality of horizontally-oriented horizontal protrusions are provided in such a length that they do not straddle the adjacent vertical protrusions in a use state in which the vertical protrusions are crossed at different positions. It is characterized in that a longitudinal passage continuous in the direction is provided.

In such a sealed lead-acid battery, a plurality of vertically extending projections are provided on the side surface of the battery case, and at least the wide side surface of the battery case is provided with a plurality of vertically projecting portions which intersect at different positions. Since the lateral protrusions are provided in such a length that they do not straddle the adjacent vertical protrusions, these intersecting protrusions serve as a rigid structure reinforcing body and can prevent the battery case from bulging due to internal pressure.

Further, since a vertical passage that is continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of lateral projections are provided on the side surface of the battery case, since the lateral projections are provided with a length that does not straddle the adjacent vertical projections, the vertical passages are not blocked and the vertical projections are not blocked. Heat can be dissipated to the upper part without obstacle in the direction passage.

Therefore, according to the sealed lead-acid battery of the present invention, it is possible to prevent the expansion of the battery case due to the internal pressure and to satisfactorily dissipate the heat even if the battery is arranged adjacently.

In the sealed lead-acid battery according to the second aspect of the present invention, each side surface of the battery case is provided with a plurality of vertically extending projections which are oriented vertically in use, and at least the wide side surface of the battery case is used. A plurality of laterally projecting portions that are horizontally oriented are provided to intersect with the vertically projecting portions at different positions, and the vertically projecting portions are provided between the adjacent vertically projecting portions so that the vertical projecting portions are provided. A vertical passage that is continuous in the vertical direction is provided between the vertical protrusions.

In such a sealed lead-acid battery, a plurality of vertical protrusions are provided on the side surface of the battery case, and at least a wide side surface of the battery case is provided with a plurality of horizontal protrusions at different positions. Since they are provided so as to intersect with each other, these intersecting projecting portions serve as a reinforcing body having a rigid structure, and it is possible to prevent the battery case from bulging due to internal pressure.

Further, since a vertical passage continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of laterally projecting portions are provided on the side surface of the battery case, the vertically projecting portions are provided between the vertically projecting portions adjacent to each other, so that the longitudinal passages are not blocked. The heat can be released to the upper part without any trouble in the vertical passage.

Therefore, according to the sealed lead-acid battery according to the present invention, it is possible to prevent the expansion of the battery case due to the internal pressure and to satisfactorily dissipate the heat even when the battery is arranged adjacently.

The third and fourth aspects of the present invention improve a sealed lead acid battery unit in which a plurality of cathode gas absorption type sealed lead acid batteries are housed in a frame and connected in series or in parallel. .

In the sealed lead-acid battery unit according to the third aspect, a plurality of vertically-oriented protrusions that are vertically oriented in use are provided on the side surface of the battery case of each sealed lead-acid battery, and at least the battery case of On a wide side surface, a plurality of laterally-oriented horizontal protrusions are provided in such a length that they do not straddle the adjacent vertically-oriented protrusions in use in such a manner that they intersect with the respective vertically-oriented protrusions at different positions. A vertical passage extending vertically is provided between the protrusions, and a plurality of protrusions are provided on the metal plate provided on the frame and in contact with the side surface of the battery case. It is characterized in that it is in contact with the mating surface at a location where there is no mating projecting part so as not to block the longitudinal passage from the projecting part of the tank.

In such a sealed lead acid battery unit,
Since a plurality of vertical protrusions are provided on the side surface of the battery case, and at least a wide side surface of the battery case is provided with a plurality of horizontal protrusions that intersect at different positions at the respective vertical protrusions, these intersect. The protruding portion serves as a rigid structure reinforcing member, and can prevent the battery case from bulging due to internal pressure. Further, a plurality of projecting portions are provided on the metal plate in contact with the side surface of the battery case, and the projecting portion of the metal plate and the projecting portion of the battery case do not block the longitudinal passage so that there is no projecting portion on the other side. Since it is brought into contact with the surface of the other side at a location, it is possible to prevent the swelling of the battery case by the metal plate and its protruding portion.

Further, since a vertically extending vertical passage is provided between the vertically protruding portions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of lateral projections are provided on the side surface of the battery case, since the lateral projections are provided with a length that does not straddle the adjacent vertical projections, the vertical passages are not blocked and the vertical projections are not blocked. Heat can be dissipated to the upper part without obstacle in the direction passage. Moreover, since the projecting portion of the metal plate and the projecting portion of the battery case are in contact with the surface of the mating side at a location where there is no projecting portion of the mating side so as not to block the longitudinal passage, It is possible to satisfactorily dissipate heat.

Further, the metal plate provided on the frame body and in contact with the side surface of the battery case is provided with a plurality of protrusions, and the protrusions of the metal plate and the battery container are opposite to each other. Since it is in contact with the surface of the other side at a location where no metal exists, the bulging of the battery case can be prevented by the metal plate and its protruding portion.

As a result, it is possible to prevent the battery case from swelling during charging and the increase in heat generation of the battery.

In the sealed lead acid battery unit according to a fourth aspect of the present invention, each of the sealed lead acid batteries is provided on its side surface with a plurality of vertically extending projections which are vertically oriented in use, and at least the battery case On the wide side surface, a plurality of horizontal protrusions that are horizontal when used are provided to intersect with each vertical protrusion at different positions, and vertical protrusions are separated from each other between adjacent vertical protrusions. A vertical passage that is continuous in the vertical direction is provided between the adjacent vertical protrusions, and a plurality of protrusions are provided on the metal plate that is provided on the frame and is in contact with the side surface of the battery case. It is characterized in that the protruding portion of the metal plate and the protruding portion of the battery case are in contact with the surface of the mating side at a location where there is no projecting portion of the mating side so as not to block the longitudinal passage. .

Thus, in the sealed lead acid battery unit,
Since the projecting portion is provided on the side surface of the battery case and the longitudinal projecting portion and the lateral projecting portion are provided on at least the wide side surface of the battery cell so as to intersect with each other, these intersecting projecting portions serve as a reinforcing body of a rigid structure. It is possible to prevent the battery case from swelling due to the internal pressure.
Further, a plurality of projecting portions are provided on the metal plate in contact with the side surface of the battery case, and the projecting portion of the metal plate and the projecting portion of the battery case are brought into contact with the surface of the mating side at a location where the projecting portion of the mating side does not exist. Therefore, it is possible to prevent the battery case from bulging even with the metal plate and the protruding portion thereof.

Further, since a vertical passage continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of laterally projecting portions are provided on the side surface of the battery case, the vertically projecting portions are provided between the vertically projecting portions adjacent to each other, so that the longitudinal passages are not blocked. The heat can be dissipated to the upper part without any trouble in the upper part in the vertical passage. Moreover, since the protruding portion of the metal plate and the protruding portion of the battery case are in contact with the surface of the mating side at a location where the mating protruding portion does not exist so as not to block the longitudinal passage, Good heat can be radiated through the protruding portion.

Further, the metal plate provided on the frame body and in contact with the side surface of the battery case is provided with a plurality of protrusions, and the protrusions of the metal plate and the battery container are opposite to each other. Since it is in contact with the mating surface at a location where no metal exists, swelling of the battery case can also be prevented by the metal plate and its protrusion.

As a result, it is possible to prevent the battery case from bulging and the heat generation of the battery from increasing during charging.

In the sealed lead acid battery according to the present invention,
On the narrow side surface of the battery case, a plurality of laterally-projecting portions that are laterally arranged in use can be provided in the same manner as the wide side surface.

Further, in the present invention, the vertical protrusions and the horizontal protrusions include those which are entirely inclined at a required angle with respect to the vertical line.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a first example of an embodiment of a sealed lead acid battery and a sealed lead acid battery unit according to the present invention will be described together with a comparative example.

The sealed lead-acid battery used in the test is 2V, 50
It is three kinds of batteries in which the shape of the protruding portion on the side surface of the battery case 1 is changed by 0 Ah. That is, FIG. 1 shows the first embodiment of the present invention.
A sealed lead-acid battery as an example (referred to as this example),
2 and 3 show sealed lead-acid batteries of Comparative Example 1 and Comparative Example 2.

The outer dimensions of the battery case 1 in these batteries are
The height is 350 mm, the length is 220 mm, and the width is 170 mm. The battery case 1 of these batteries has a wide side surface 1a with a length of 220 mm.
And a narrow side surface 1b having a width of 170 mm. The material of the battery case 1 in these batteries is PP resin.

The shape of the narrow side surface 1b of the battery case 1 of these batteries is the same for all the batteries, and a plurality of vertically projecting portions 2 which are vertically oriented in use are provided on the narrow side surface 1b from the upper part to the lower part of the battery case. Has been. A vertical passage 8 continuous in the vertical direction is provided between the adjacent vertical protrusions 2.

In the battery case 1 of each of the batteries of this example and Comparative Examples 1 and 2, the shape of the projecting portion of the wide side surface 1a, which easily deforms, is changed.

That is, as shown in FIG. 1, on the wide side surface 1a of the battery case 1 in the battery of this example, a plurality of vertically-oriented protrusions 3 which are vertically oriented in use are provided from the upper part to the lower part of the battery case. Further, a plurality of laterally-projecting portions 4 which are laterally arranged in the use state are provided so as to intersect the longitudinally-projecting portions 3 at different positions. Vertically separating portions 5 are provided on the horizontal protrusions 4 between the adjacent vertical protrusions 3.
Therefore, the vertical passage 8 is not blocked even if the lateral protrusion 4 is provided.

As shown in FIG. 2, in the battery of Comparative Example 1, a wide side surface 1a of the battery case 1 is provided with a plurality of vertically projecting portions 3 which are vertically oriented in a used state, and is further oriented horizontally in a used state. A plurality of horizontal protrusions 4 are provided to intersect the vertical protrusion 3 at different positions. In Comparative Example 1, unlike the present example, the laterally projecting portion 4 is not provided with the separating portion 5 that separates it in the vertical direction.

As shown in FIG. 3, a wide side surface 1a of the battery case 1 in the battery of Comparative Example 2 is provided with only a plurality of vertically projecting portions 3 which are vertically oriented in use.

In each battery case 1 as described above, the thickness of the battery case 1 is 3 mm where there is no protrusion, and the height of each protrusion 2, 3, 4 from the surface of the battery case 1 is 5 mm. In addition, the vertical interval between the protruding portions 2 and 3 is 50 mm.

In the battery case 1 of the battery of the present example shown in FIG. 1, each of the laterally projecting portions 4 separated by the separating portion 5 has a length of 30 mm, and the separating width of the separating portion 5 is 10 mm. The vertical protrusions 3 are arranged so as to intersect with each other at substantially the center in the longitudinal direction of the horizontal protrusions 4 separated by the separation unit 5.

Six batteries of the present example and Comparative Examples 1 and 2 each having the above-mentioned three types of battery case are arranged in close contact with the wide side surface 1a of the battery case 1, and these are housed in one metal frame. The test was conducted on the assembled battery (type A) and the assembled battery (type B) in which the metal plate 6 made of Al as shown in FIG. 1 was sandwiched between the wide side surfaces 1a of the adjacent battery cases 1. In this example, a plurality of vertically extending projections 7 are provided at a height of 5 mm on the metal plate 6 made of Al when in use. These protrusions 7 do not block the vertical passages 8 and correspond to the wide side surface 1a of the battery case 1.
Is contacted with the wide side surface 1a where there is no protrusion 3, 5. On the other hand, the protrusions 3 and 5 on the wide side surface 1a of the battery case 1 do not block the longitudinal passage 8 so that the metal plate 6 does not have the protrusions 7.
Is in contact with

Surround the above assembled battery with a heat insulating material, and
It was charged at 2.23 V / cell in the constant temperature bath. FIG. 4 shows the transition of the battery temperature when the Al metal plate 6 is sandwiched between the batteries under such test conditions, and FIG. 5 shows the transition of the battery temperature when the Al metal plate 6 is not sandwiched. Shown in. As can be seen from these figures, the battery of this example shown in FIG. 1 is intended to prevent heat escape, and the battery of Comparative Example 2 shown in FIG. 3 is also the same. Further, by sandwiching the metal plate 6 between the batteries, the type A has improved heat-resistant runaway compared to the type B.

On the other hand, although the above is the performance of the assembled battery, the capacity of the unit cell after battery assembly was confirmed without the metal frame. As a result of the discharge test at this time, assuming that the capacity of the battery of this example is 100, the capacity of the battery of Comparative Example 1 is 100 and the capacity of the battery of Comparative Example 2 is 88, and the discharge performance of the battery of Comparative Example 2 is poor. . This is because the battery case 1 of the battery of Comparative Example 2 is swollen, and it can be said that the strength is insufficient only with the vertically protruding portions 2 and 3.

FIG. 6 shows a second example of the embodiment of the sealed lead-acid battery according to the present invention.

In the battery case 1 of the sealed lead-acid battery of this example, the vertical protrusion 3 on the wide side surface 1a is provided to be inclined with respect to the vertical direction, and the horizontal protrusion 4 is also inclined to the horizontal direction. It is provided. That is, in this example, the vertical protrusion 3 and the horizontal protrusion 4 are provided on the wide side surface 1a of the battery case 1 so as to be inclined at a required angle with respect to the vertical line as a whole. Other configurations are similar to those of the first example shown in FIG.

With such a structure, it is possible to obtain substantially the same effect as that of the first example.

FIG. 7 shows another example of the metal plate 6 used in the present invention. In the metal plate 6 of this example, the protrusion 7 is oriented horizontally.

Even if such a metal plate 6 having a horizontally oriented protrusion 7 is used, the metal plate 6 having a vertically oriented protrusion 7 is used.
It is possible to obtain almost the same effect as when using.

FIG. 8 shows a third example of the embodiment of the sealed lead-acid battery according to the present invention.

In the battery case 1 of the sealed lead-acid battery of this example, a plurality of vertically extending projections 3 which are vertically oriented in use are provided on the wide side surface 1a of the battery case 1 from the upper part to the lower part of the battery case. , A plurality of laterally-oriented horizontal protrusions 4 are provided in such a length that they do not straddle the adjacent vertically-oriented protrusions 3 in a use state in which the respective vertically-oriented protrusions 3 cross at different positions, A vertical passage 8 that extends vertically between the protrusions 2
Is provided. In particular, in this example, the lateral protrusions 4 are provided so as to alternate with the adjacent vertical protrusions 3. Other configurations are the same as those in FIG.

With such a structure, the same effect as that of the example shown in FIG. 1 can be obtained.

[0053]

According to the sealed lead-acid battery of claim 1,
A plurality of vertical protrusions is provided on a side surface of the battery case, and at least a wide side surface of the battery case is provided with a plurality of horizontal protrusions that cross the respective vertical protrusions at different positions across the adjacent vertical protrusions. Since it is provided with a length that does not increase, the intersecting protrusions serve as a rigid structure reinforcing member, and can prevent swelling of the battery case due to internal pressure.

Further, since a vertical passage continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of laterally projecting portions are provided on the side surface of the battery case, since these laterally projecting portions are provided with a length that does not straddle the adjacent vertically projecting portions, the vertically oriented passages are not blocked, and the vertically oriented Without blocking the passage, the heat can be released to the upper portion in the vertical passage without hindrance.

Therefore, according to the sealed lead-acid battery according to the present invention, it is possible to prevent the expansion of the battery case due to the internal pressure and to satisfactorily dissipate the heat even if the battery is arranged adjacently.

In the sealed lead-acid battery according to the second aspect of the present invention, a plurality of vertical protrusions are provided on the side surface of the battery case, and a plurality of horizontal protrusions are positioned on the vertical protrusions on at least the wide side surface of the battery case. Since they are provided so as to intersect with each other differently, these intersecting protruding portions serve as a rigid structure reinforcing member, and it is possible to prevent the battery case from bulging due to internal pressure.

Further, since a vertically extending vertical passage is provided between the vertically protruding portions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of laterally projecting portions are provided on the side surface of the battery case, the vertically projecting portions are provided between the vertically projecting portions adjacent to each other, so that the longitudinal passages are not blocked. The heat can be released to the upper part without any trouble in the vertical passage.

Therefore, according to the sealed lead-acid battery according to the present invention, it is possible to prevent the expansion of the battery case due to the internal pressure and to satisfactorily dissipate the heat even when the battery is arranged adjacently.

In the sealed lead-acid battery unit according to a third aspect of the present invention, a plurality of vertical protrusions are provided on the side surface of the battery case, and at least the wide side surface of the battery case has a different position for each vertical protrusion. Since there are multiple lateral protrusions that intersect,
These intersecting protrusions serve as a rigid-structured reinforcement member, and can prevent the battery case from bulging due to internal pressure. Further, a plurality of projecting portions are provided on the metal plate in contact with the side surface of the battery case, and the projecting portion of the metal plate and the projecting portion of the battery case do not block the longitudinal passage so that there is no projecting portion on the other side. Since it is brought into contact with the surface of the other side at a location, it is possible to prevent the swelling of the battery case by the metal plate and its protruding portion.

Further, since a vertical passage continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of lateral projections are provided on the side surface of the battery case, since the lateral projections are provided with a length that does not straddle the adjacent vertical projections, the vertical passages are not blocked and the vertical projections are not blocked. Heat can be dissipated to the upper part without obstacle in the direction passage. And also, the protruding portion of the metal plate and the protruding portion of the battery case are
Although the vertical passage is not blocked, the contact is made with the mating surface at a location where the mating protrusion does not exist, so that heat can be radiated well even through the metal plate.

Further, the metal plate provided on the frame and in contact with the side surface of the battery case is provided with a plurality of protrusions, and the protrusions of the metal plate and the battery container are opposite to each other. Since it is in contact with the surface of the other side at a location where no metal exists, the bulging of the battery case can be prevented by the metal plate and its protruding portion.

As a result, it is possible to prevent the expansion of the battery case, improve the heat-resistant runaway of the battery, and obtain the sealed lead acid battery unit that satisfies the initial capacity.

In the sealed lead-acid battery unit according to the fourth aspect of the present invention, the protruding portion is provided on the side surface of the battery case, and at least the wide side surface of the battery case is provided with the vertically projecting portion and the horizontally projecting portion intersecting with each other. Therefore, these intersecting protrusions serve as a rigid structure reinforcing member, and can prevent the battery case from bulging due to internal pressure. Further, a plurality of projecting portions are provided on the metal plate in contact with the side surface of the battery case, and the projecting portion of the metal plate and the projecting portion of the battery case are brought into contact with the surface of the mating side at a location where the projecting portion of the mating side does not exist. Therefore, it is possible to prevent the battery case from bulging even with the metal plate and the protruding portion thereof.

Further, since a vertical passage continuous in the vertical direction is provided between the vertical protrusions on the side surface of the battery case,
This vertical passage serves as a heat dissipation passage and allows heat to escape to the upper portion. Further, even if a plurality of laterally projecting portions are provided on the side surface of the battery case, the vertically projecting portions are provided between the vertically projecting portions adjacent to each other, so that the longitudinal passages are not blocked. The heat can be released to the upper part without any trouble in the vertical passage. Moreover, since the protruding portion of the metal plate and the protruding portion of the battery case are in contact with the surface of the mating side at a location where the mating protruding portion does not exist so as not to block the longitudinal passage, the metal plate It is possible to satisfactorily dissipate the heat through the protrusion.

Further, the metal plate provided on the frame body and in contact with the side surface of the battery case is provided with a plurality of protrusions, and the protrusions of the metal plate and the battery container are opposite to each other. Since it is in contact with the mating surface at a location where no metal exists, swelling of the battery case can also be prevented by the metal plate and its protrusion.

As a result, it is possible to obtain a sealed lead-acid battery unit which can prevent the battery case from swelling, improve the heat resistance of the battery and further satisfy the initial capacity.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first example of an embodiment of a sealed lead-acid battery according to the present invention.

FIG. 2 is a perspective view of a sealed lead-acid battery of Comparative Example 1.

FIG. 3 is a perspective view of a sealed lead-acid battery of Comparative Example 2.

FIG. 4 is a characteristic diagram showing changes in battery temperature during overcharge in a sealed lead-acid battery unit when a metal plate is sandwiched between battery cases of the batteries of this example and Comparative examples 1 and 2.

FIG. 5 is a characteristic diagram showing changes in battery temperature during overcharging in the sealed lead-acid battery unit in the case where the metal plates are not sandwiched between the batteries in the batteries of this example and Comparative examples 1 and 2.

FIG. 6 is a perspective view showing a second example of the embodiment of the sealed lead-acid battery according to the present invention.

FIG. 7 is a perspective view showing another example of the metal plate used in the present invention.

FIG. 8 is a front view of a wide side surface of the battery case showing the third example of the embodiment of the sealed lead-acid battery according to the present invention.

[Explanation of symbols]

 1 Battery Case 1a Wide Side 1b Narrow Side 2,3 Vertical Projection 4 Horizontal Projection 5 Separation 6 Metal Plate 7 Projection 8 Vertical Passage

Claims (4)

[Claims] 1. A cathode gas absorption type sealed lead-acid battery, wherein each side surface of the battery case is provided with a plurality of vertically extending projections that are vertically oriented in use, and at least a wide side surface of the battery case is individually provided. Between the adjacent vertical protrusions, a plurality of horizontal horizontal protrusions are provided with a length that does not straddle the adjacent vertical protrusions in a use state in which the vertical protrusions cross at different positions. The sealed lead-acid battery is characterized in that a vertical passage that is continuous in the vertical direction is provided in the. 2. A cathode gas absorption type sealed lead-acid battery, wherein each side surface of the battery case is provided with a plurality of vertically-oriented protrusions that are vertically oriented in use, and at least a wide side surface of the battery case is used. A plurality of horizontal protrusions that are horizontal in a state are provided to intersect with each of the vertical protrusions at different positions, and the vertical protrusions are provided between adjacent vertical protrusions in the vertical direction. The sealed lead-acid battery is characterized in that a vertical passage continuous in the vertical direction is provided between the adjacent vertical protrusions. 3. A sealed lead acid battery unit in which a plurality of cathode gas absorption type sealed lead acid batteries are housed in a frame and connected in series or in parallel, wherein a side surface of a battery case of each sealed lead acid battery is provided. A plurality of vertical protrusions that are vertically oriented in a used state are provided, and at least a wide side surface of the battery case laterally protrudes in a horizontal direction in a plurality of laterally oriented protrusions that are crossed at different positions. Is provided with a length that does not straddle the adjacent vertical protrusions, a plurality of protrusions are provided on the metal plate provided on the frame body and in contact with the side surface of the battery case, and the adjacent vertical protrusions are provided. A vertical passage that is continuous in the vertical direction is provided between the facing protrusions, and there is a counterpart protrusion so that the protrusion of the metal plate and the protrusion of the battery case do not block the vertical passage. Is touching the surface of the other side A sealed lead acid battery unit characterized by the following. 4. A sealed lead acid battery unit in which a plurality of cathode gas absorption type sealed lead acid batteries are housed in a frame body and connected in series or in parallel, wherein a side surface of a battery case of each sealed lead acid battery is provided. A plurality of vertical protrusions that are vertically oriented in use are provided, and a plurality of lateral protrusions that are horizontal in use are intersected at different positions on each of the vertical protrusions at least on a wide side surface of the battery case. The horizontal protrusions are provided with vertical separating portions between the adjacent vertical protrusions, and vertical vertical passages are provided between the adjacent vertical protrusions. A plurality of protrusions are provided on the metal plate provided on the frame body and in contact with the side surface of the battery case, and the protrusions of the metal plate and the battery container block the vertical passage. Do not let the protruding part on the other side A sealed lead acid battery unit characterized in that it is in contact with the surface of the other side at a location that does not exist.