JP5555448B2 - Control valve type storage battery - Google Patents

Description

  The present invention relates to a control valve type storage battery.

  Control valve type storage battery does not leak electrolyte even if it is laid, so in addition to installing it in an upright state with the lid joined to the battery case in the upright position, the battery case is placed in the horizontal position However, it can also be used (for example, refer patent document 1).

JP 2001-15090 A

  However, since this type of storage battery has a configuration in which a lid portion is joined (adhered or fused) to the battery case, this joined portion has the weakest strength. Furthermore, since this portion becomes a taper butt when the battery case and the lid are removed from the molding die, the portion protrudes from other portions. For this reason, when placed horizontally, the load is concentrated on the weakest “joint portion”, and there is a risk of peeling or cracking of the joint portion.

Further, there are cases where a large-capacity stationary storage battery is configured by installing this type of storage battery side by side on a storage battery storage stand in multiple stages. Here, FIGS. 12A and 12B respectively show a front view and a side view of a large-capacity stationary storage battery. Reference numeral 1 is a storage battery, reference numeral 2 is a battery case, reference numeral 3 is a lid, and reference numeral 4 is A storage battery storage stand, symbol 5 is a pair of upper and lower protrusion prevention metal fittings that suppress the protrusion of the storage battery 1.
As shown in FIGS. 13A and 13B, in order to avoid a situation where the storage batteries collide with each other due to vibration such as an earthquake and the joints are peeled off or cracked when a large-capacity stationary storage battery is configured in this way. In addition, the storage batteries 1 are arranged side by side at regular intervals, and a spacer 6 is inserted into the gap. Here, FIG. 13A shows a case where the storage batteries 1 are arranged side by side in an upright state, and FIG. 13B shows a case where the storage batteries 1 are arranged side by side.

However, there are cases where the storage battery 1 is used in units of several hundreds for the stationary storage battery, and it takes time and labor to insert the spacers 6 at intervals for each storage battery 1, and the spacers 6 are long-term. There is also a risk of falling off.
Then, the objective of this invention is providing the control valve type storage battery excellent in the installation property which avoids peeling and the generation | occurrence | production of a crack of the junction part of a battery case and a cover part.

In order to achieve the above object, the present invention is provided with a rib projecting outward from the lid portion on the side surface of the battery case and having a strength sufficient to support its own weight, and the rib extends in the depth direction of the battery case. A plurality of vertical ribs provided at different intervals along the junction between the battery case and the lid, and a transverse plane extending between the junctions and crossing between the vertical ribs. Ribs, wherein the transverse ribs are provided between the longitudinal ribs having a relatively long interval, and air is released between the longitudinal ribs having a relatively short interval in the depth direction of the battery case. Features. According to this configuration, it is possible to avoid stress concentration on the joint portion between the external force acting on the side surface of 蓄 cell receives the entire rib the container and the lid. Therefore, it is possible to avoid the peeling of the joint and the occurrence of cracks, and it is possible to easily perform installation work and maintenance inspection.

Further, since extending along the junction of the Li blanking is the container and the lid portion, the joint portion can be efficiently reinforced with avoiding concentration of stress on the joints.
In the above-described configuration, the battery case is provided with a concave portion into which the convex portion of the lid portion is fitted, the vertical rib extends through a side of the concave portion, and the horizontal rib is formed on the concave portion. It may be provided on the side.
Further, in the above configuration, the horizontal rib is formed in a width that covers the entire side of the concave portion in a cross-sectional view in the depth direction of the battery case, and the horizontal rib between the vertical ribs having a relatively long interval. The side opposite to the rib may be opened in the depth direction of the battery case.
Further, in the above configuration, the side surface of the battery case is provided with a draft angle for facilitating the removal of the molding die toward the lower side which is the depth direction of the battery case, and from the side surface of the vertical rib. The height may be formed so as to cancel out the inclination of the draft, and the end surface of the vertical rib may be formed on a vertical surface extending in the depth direction of the battery case.

Moreover, the said structure WHEREIN: The said rib may be a rib for fixing this battery case to a mount , when arrange | positioning with the side face of the said battery case facing down .

  INDUSTRIAL APPLICABILITY The present invention can provide a control valve type storage battery that is excellent in installation property by avoiding peeling and cracking of the joint between the battery case and the lid.

It is a perspective view which shows the control valve type storage battery which concerns on 1st Embodiment of this invention in an upright state. It is a side view of FIG. It is a figure which shows the junction part of a battery case and a cover part with a periphery structure. It is the figure which arranged the control valve type storage battery side by side in the upright state. It is the figure which arrange | positioned the control valve type storage battery side by side. It is a side view which shows a periphery structure with a protrusion prevention metal fitting with a storage battery. It is a figure which shows the reference example of the conventional control valve type storage battery pop-out prevention structure. It is a perspective view which shows the control valve type storage battery which concerns on 2nd Embodiment of this invention in an erect state. It is a side view at the time of arrange | positioning a control-valve type storage battery to a storage battery storage stand horizontally. It is a figure which shows the control valve type storage battery which concerns on a modification. It is a figure which shows the control valve type storage battery which concerns on a modification. (A) is a front view of a large-capacity stationary storage battery, and (B) is a side view thereof. (A) is a figure explaining the case where a storage battery is arranged side by side in an upright state, and (B) is a figure explaining the case where a storage battery is arranged side by side.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a perspective view showing the control valve storage battery according to the first embodiment of the present invention in an upright state, and FIG. 2 is a side view thereof.
This control valve type storage battery 10 is a stationary lead storage battery used for UPS (uninterruptible power supply) or the like, and has a battery case 11 made of a synthetic resin (in this example, made of ABS resin), and joined to this battery case 11. And a lid portion 12 made of synthetic resin (in this example, made of ABS resin).
The battery case 11 has a box shape having an opening in the upper part, and in this battery case 11, a positive electrode plate and a negative electrode plate each having a substrate filled with an active material paste are matted mainly with fine glass fibers. A group of electrode plates stacked alternately via a separator is housed, and the electrode plate group is impregnated with an electrolyte.

The lid portion 12 has a lid shape that covers the opening of the battery case 11, and a metal plate-like positive electrode terminal 13 </ b> A and negative electrode terminal 13 </ b> B projecting upward and a control valve 14 are formed on the upper surface serving as a terminal mounting surface. Provided. The control valve 14 is attached in the battery case 11 so as to cover the opening for injecting the electrolyte, and is normally closed to keep the inside of the storage battery 10 airtight, and the internal pressure of the storage battery 10 is maintained during charging or the like. When it rises, it opens and relieves pressure.
In addition, since this control valve type storage battery 10 has a relatively large capacity, it has two positive terminals 13A and two negative terminals 13B constituting the terminal portion, but the number of terminals is changed according to the capacity. For example, in the case of a small capacity, each of the terminals 13A and 13B is one.

The battery case 11 includes a battery case main body 21 that forms a box, and a rib 31 that is provided integrally with a side surface (side wall) 22 of the battery case main body 21 and protrudes outward from the lid 12.
FIG. 3 is a view showing the joint 15 between the battery case 11 and the lid 12 together with the peripheral configuration.
The upper surface 21 </ b> A of the battery case body 21 constitutes a joint surface to which the lid 12 is joined, and a concave part 21 </ b> B extending along the outer edge of the battery case body 21 is provided on the joint surface. Further, the lower surface 12A along the outer edge of the lid portion 12 constitutes a joining surface to which the battery case body 21 is joined, and this joining surface extends along the outer edge of the lid portion 12 and extends into the recess 21B. The downward convex part 12B which fits is provided.
When joining the lid part 12 to the battery case 11, the joining position can be easily positioned by fitting the lower convex part 12B of the lid part 12 into the concave part 21B of the battery case body 21, and in this positioning state, By joining the battery case 11 and the lid portion 12 with an adhesive, a sufficient bonding strength can be secured.

The battery case 11 and the lid 12 are each formed by resin molding. When this resin molding is performed, the joint portion 15 between the battery case 11 and the lid portion 12 is a tapered butting portion when each of the battery case 11 and the lid portion 12 is removed from the molding die.
That is, as shown in FIG. 3, a portion near the joint 15 of the battery case body 21 is provided with a draft TP <b> 1 so as to decrease toward the lower side of the battery case body, and is directed downward of the battery case body 21. This makes it easier to remove the mold.
Further, the joint portion 15 of the lid portion 12 is also provided with a draft TP <b> 2 so as to become smaller toward the upper portion of the lid portion 12, thereby facilitating removal of the molding die toward the upper portion of the lid portion 12. .

As shown in FIGS. 1 and 2, the rib 31 includes a plurality of vertical ribs 32 extending in the depth direction of the battery case 11, and a lateral extension extending along the joint 15 near the lid portion 12 of the battery case 11. And a rib 33 having sufficient strength to support the weight of the battery 10 as a finished product.
Each of the vertical ribs 32 extends in a straight line with a predetermined width from the upper surface 21 </ b> A to the bottom surface 23 of the battery case body 21, and is provided at a predetermined interval along the periphery of the joint portion 15. It is done.
More specifically, as shown in FIG. 2, the vertical rib 32 alternates between a first interval L1 set at a relatively wide interval and a second interval L2 set at an interval narrower than the first interval L1. Repeatedly, each side surface 22 is provided with a plurality of vertical ribs 32. In the present embodiment, the battery case main body 21 has a rectangular shape in a top view, and four vertical ribs 32 are provided on the side surface 22A corresponding to the short side thereof, and six pieces are provided on the side surface 22B corresponding to the long side. Vertical ribs 32 are provided.

Moreover, the vertical rib 32 is provided in the same position by the side surfaces 22 (side surface 22A, side surfaces 22B) which the battery case main body 21 opposes, ie, it is symmetrical on the basis of the center plane between the opposing side surfaces 22. In the position. For this reason, all the vertical ribs 32 between the adjacent battery cases 11 are opposed to each other when the battery cases 11 are arranged side by side in either the upright state or the horizontal state. Yes.
These vertical ribs 32 have rib heights that protrude outward from the lid portion 12, and portions of the side surface 22 of the battery case body 21 excluding the draft TP <b> 1 are contour ribs, and the draft TP <b> 1 portion. The offset of the draft TP1 is offset so that the end surface of the contour rib extends in the vertical upward direction as it is, and the end surface of the vertical rib is formed on the vertical surface.

That is, in this embodiment, a plurality of vertical ribs 32 extending over the entire longitudinal direction of the battery case body 21 are formed on each side surface 22, and the end surfaces of these vertical ribs 32 are on the same plane for each side surface 22. Aligned. For this reason, when an external force is applied toward the side surface 22, the entire longitudinal rib 32 can receive stress.
In this case, since each vertical rib 32 extends over the entire longitudinal direction of the battery case main body 21, the cross-sectional area of the vertical rib 32 can be ensured widely, and the wide cross-sectional area can be secured, thereby acting on the vertical rib 32. The stress can be reduced, and sufficient strength to support the weight of the storage battery 10 can be easily obtained.
Moreover, the strength from the upper surface 21 </ b> A to the bottom surface 23 of the battery case body 21 can be efficiently reinforced by the vertical ribs 32.

The lateral ribs 33 are provided so as to extend at a predetermined interval along the upper surface 21 </ b> A of the battery case body 21. More specifically, the horizontal rib 33 is a rib that is provided so as to cross the first interval L1 having a longer interval between the vertical ribs 32 with a predetermined width and is integrally connected to the vertical ribs 32. ing. Further, the end surface of the horizontal rib 33 is aligned with the end surface of the vertical rib 32.
For this reason, when an external force is applied toward the side surface 22, stress can be applied to both the longitudinal rib 32 and the lateral rib 33 provided on the side surface 22, and the portion acts on the ribs 32 and 33 accordingly. Therefore, ribs having sufficient strength to support the own weight of the storage battery 10 can be easily provided.

Moreover, since the lateral rib 33 extends along the joint 15 of the battery case body 21, the joint 15 can be reinforced. In the present embodiment, as shown in FIG. 3, a concave portion 21 </ b> B into which the lower convex portion 12 </ b> B of the lid portion 12 is fitted is provided in the vicinity of the joint portion 15 of the battery case 11. This part is a low strength part. In the present embodiment, since the lateral rib 33 is provided on the side of the concave portion 21B, the lateral rib 33 can avoid the strength reduction of the concave portion 21B.
As shown in FIG. 3, the lateral rib 33 of the present embodiment is formed to have a width that covers the entire recess 21 </ b> B in a side sectional view, thereby improving the strength of the entire recess 21 </ b> B. .

Furthermore, in the present embodiment, the horizontal rib 33 is not present in the second interval L2 where the arrangement interval of the vertical ribs 32 is short, so that the air in the second interval L2 of the vertical ribs 32 can be easily drawn up and down. ing. For this reason, the heat of the storage battery 10 can be efficiently radiated to the outside air.
In addition, in the 1st space | interval L1 where the arrangement | positioning space | interval of the vertical rib 32 is long, the horizontal rib 33 exists only on the upper side, and the lower side is released. For this reason, the air in the 1st space | interval L1 of the vertical rib 32 discharge | releases the heat | fever of the storage battery 10 by flowing in and flowing out from lower side.

Next, a case where a large capacity stationary storage battery is configured by arranging a large number of the control valve storage batteries 10 will be described.
FIG. 4 shows a state in which the control valve storage battery 10 is arranged side by side in an upright state. In addition, the code | symbol 41 is a shelf board (base member) which comprises a part of storage battery accommodation stand 40 in the figure.
When the control-valve type storage battery 10 is arranged side by side in an upright state, the bottom surface 23 of the storage battery 10 is placed on the shelf board 41 and is adjacent to one of the side surfaces 22 side (22B side in this example) of the storage battery 10. The storage battery 10 will be arrange | positioned.
As described above, the vertical ribs 32 and the horizontal ribs 33 that protrude outward from the lid 12 are provided on the side surface 22 of the storage battery 10 of the present embodiment. By arranging the ribs 33 together, the joint portions 15 of the storage battery 10 can be arranged at intervals.

In this case, a spacer that has been conventionally required for arranging the joint portions 15 of the adjacent storage batteries 10 at intervals is not necessary, and the arrangement work of the storage batteries 10 can be facilitated.
Moreover, since the vertical ribs 32 and the horizontal ribs 33 are formed into ribs having sufficient strength to support the own weight of the storage battery 10, an external force from the adjacent storage battery 10 acts on the storage battery 10 due to the influence of an earthquake or the like. In this case, the external force can be received by the entire ribs 32 and 33 located on the left and right sides of the storage battery 10. For this reason, stress concentration on the joint 15 of the storage battery 10 can be avoided, and peeling of the joint 15 and occurrence of cracks can be avoided.

FIG. 5 shows a state in which the control valve storage batteries 10 are arranged side by side.
In this case, since any one side surface 22 of the control valve type storage battery 10 is on the lower side, the vertical rib 32 and the horizontal rib 33 provided on the lower side are placed on the shelf board 41. Also in this case, the storage battery 10 adjacent to either side surface 22 side (22B side in this example) of the storage battery 10 is arranged.
As described above, the vertical rib 32 and the horizontal rib 33 provided on each side surface 22 are formed in ribs having sufficient strength to support the own weight of the storage battery 10, so that the lower side of the control valve storage battery 10 The vertical ribs 32 and the horizontal ribs 33 of the side surface 22 located at the position can sufficiently support the storage battery 10 and function as feet that support the joint 15 of the storage battery 10 in a floating state.
In addition, when an external force from the adjacent storage battery 10 acts on the storage battery 10 due to the influence of an earthquake or the like, the external force is placed on the left and right sides of the storage battery 10 in the same manner as when the storage battery 10 is placed upright. 32, 33 can be received as a whole. For this reason, stress concentration on the joint 15 of the storage battery 10 can be avoided, and peeling of the joint 15 and occurrence of cracks can be avoided.

By the way, when the control-valve storage battery 10 is placed side by side in a horizontal position, a pop-out preventing metal fitting that suppresses the storage battery 10 from protruding forward is required.
FIG. 6 is a side view showing the peripheral configuration of the storage battery 10 together with the pop-out prevention metal fitting 51.
Here, in FIG. 6, reference numeral 42 is a front vertical frame (hereinafter referred to as a front vertical frame) that constitutes a part of the storage battery storage stand 40, and reference numeral 43 is a rear vertical frame. The front and rear vertical frames 42 and 43 are provided as a pair of left and right, and a shelf plate 41 on which the storage battery 10 is placed is supported between the four front and rear vertical frames 42 and 43. In addition, by arranging the shelf boards 41 in multiple stages, a large capacity stationary storage battery in which the storage batteries 10 are arranged in multiple rows and multiple stages is configured.

When the control valve-type storage battery 10 with ribs of this embodiment is arranged horizontally, the pop-out prevention metal fittings 51 are provided in a pair of upper and lower so as to suppress the upper and lower rib front ends of the storage battery 10 as shown in FIG. That is, the pop-out preventing metal fitting 51 has a plate shape extending to the left and right, and a bolt (fastening member) 45 so as to suppress the front end of the lateral rib 33 protruding vertically from the storage battery 10 placed horizontally on the shelf board 41. Is fixed to the front vertical frame 42 of the storage battery storage frame 40. Thus, the storage battery 10 can be prevented from jumping to the front side, and various operations associated with the placement of the storage battery 10 such as the placement of the storage battery 10 and the attachment of the pop-out prevention metal fitting 51 can be performed from the front side.
In this case, since the upper and lower pair of pop-out prevention metal fittings 51 are arranged at an interval corresponding to the long side of the lid portion 12 of the storage battery 10, the terminals 13A and 13B provided on the cover portion 12 and the pop-out prevention metal fitting 51 Is the distance from the side surface of the lid portion 12 to the terminals 13A and 13B (the distance indicated by the symbol LA in FIG. 6).

Here, FIG. 7 is a diagram showing a reference example of a conventional control valve type storage battery pop-out prevention structure. As shown in this figure, in the conventional configuration, the upper and lower portions of the lid portion 2 of the control valve storage battery 1 are held down by a pair of upper and lower pop-out prevention fittings 5, so that terminals 13 A and 13 B provided on the lid portion 12 and the jump-out prevention fittings are provided. The separation distance from 5 is the distance indicated by reference numeral LB in FIG. That is, the separation distance LB becomes narrower than the inter-axis distance LA by the amount that the pop-out prevention metal fitting 5 overlaps the lid portion 2.
Since the terminal mounting surface of this type of lid is not so wide due to the structure of the storage battery 10, in the case of the conventional structure shown in FIG. 7, a sufficient separation distance LB between the terminals 13 </ b> A and 13 </ b> B and the pop-out prevention metal fitting 5 is secured. It is necessary to be careful not to accidentally short-circuit during installation work or maintenance inspection. Moreover, since the pop-out prevention metal fitting 5 presses the lid portion 2 in the direction of the battery case 3, if the force is too strong, the joint between the lid portion 2 and the battery case 3 may be damaged.
On the other hand, in this embodiment, since the separation distance LA between the terminals 13A and 13B and the pop-out prevention metal fitting 51 can be made wider than the conventional distance LB, installation work and maintenance inspection can be easily performed. In addition, since the pop-out preventing metal fitting 51 does not press the lid portion 12, the joint portion 15 is not damaged.

As described above, the control valve storage battery 10 of the present embodiment has ribs 31 (vertical ribs 32, horizontal ribs) that protrude outward from the lid 12 on the side surface 22 of the battery case 11 and have sufficient strength to support its own weight. Since the rib 33) is provided, the external force acting on the side surface 22 of the storage battery 10 can be received by the entire rib 31 to avoid stress concentration on the joint portion 15, and peeling of the joint portion 15 and occurrence of cracks can be avoided. , Installation is improved.
Moreover, since the rib 31 is constituted by the vertical rib 32 extending in the depth direction of the battery case 11 and the horizontal rib 33 extending along the joint portion 15 in the vicinity of the lid portion 12 of the battery case 11, the side surface 22 is provided. The cross-sectional area of the rib 31 provided in the battery can be ensured widely, and sufficient strength to support the own weight of the storage battery 10 can be easily obtained. In this case, the longitudinal rib 32 can reinforce the strength of the battery case 11 in the depth direction, and the lateral rib 33 can avoid stress concentration on the joint 15 and efficiently reinforce the joint 15.
Further, when the control-valve type storage battery 10 is placed horizontally, the rib 31 is pressed by the pop-out prevention metal fitting 51 to restrict the pop-out, so that the separation between the terminals 13A, 13B and the pop-out prevention metal fitting 51 is avoided. The distance LA can be wide. Accordingly, installation work and maintenance inspection can be easily performed from the front side, and damage to the joint portion 15 by the pop-out preventing metal fitting 51 can be avoided.

<Second Embodiment>
FIG. 8 is a perspective view showing the control valve storage battery according to the second embodiment of the present invention in an upright state. In 2nd Embodiment, by extending the horizontal rib 33 provided in the battery case 11 of the control valve type storage battery 10 further, and forming the through-hole 33H which lets the volt | bolt 45 (refer FIG. 6) pass this horizontal rib 33, The battery case 11 is configured as an attachment rib 33 </ b> X for attaching to the storage battery storage stand (base) 40.
The mounting ribs 33 </ b> X are provided in pairs on the side 22 </ b> A on the short side located above and below the battery case 11 when the battery case 11 is placed on the shelf plate 41, and the vertical ribs along the upper surface of the battery case 11. The through hole 33 </ b> H is formed substantially at the center of the flat plate-shaped portion. When the battery case 11 is placed on the shelf plate 41, the side ribs 22B on the long side located on the left and right sides of the battery case 11 are provided with the horizontal ribs 33 similar to those in the first embodiment.

FIG. 9 is a side view when the control valve storage battery 10 is placed on the storage battery storage stand 40 in a horizontal position.
As shown in this figure, when the control valve storage battery 10 is placed horizontally, the upper and lower mounting ribs 33 </ b> X provided on the storage battery 10 are directly fixed to the shelf plate 41 of the storage battery storage stand 40 with bolts 45. As a result, the pop-up of the storage battery 10 is regulated.
In this case, since the storage battery 10 can be fixed to the storage battery storage stand 40 without using a pop-out prevention metal fitting, the number of parts can be reduced. In addition, since there is no pop-out preventing metal fitting around the terminals 13A and 13B, a wide working space around the terminals 13A and 13B can be secured, and installation work and maintenance inspection can be facilitated. Further, since the pop-out preventing metal fitting is not used, damage to the joint portion 15 due to the pop-out preventing metal fitting can be avoided.

As described above, since the mounting rib 33X for fixing the battery case 11 to the base 40 is provided in the vicinity of the lid portion 12 on the side surface 22 of the battery case 11, the storage battery 10 can be stored in the storage battery without using a pop-out prevention metal fitting. It can be fixed to the storage stand 40.
In this case, since the vertical rib 32 positioned on the lower side of the control valve storage battery 10 functions as a foot part that supports the joint part 15 of the storage battery 10 in a floating state, the stress on the joint part 15 due to the own weight of the storage battery 10 Concentration can be avoided, and peeling of the joint 15 and occurrence of cracks can be avoided.
Moreover, since the rib 31 similar to 1st Embodiment is provided in the left-right side surface 22 of the storage battery 10, when the external force from the adjacent storage battery 10 acts, the external force is located in the left-right side of the storage battery 10. It can be received by the rib 31, and stress concentration on the joint 15 can be avoided. That is, the storage battery 10 of the present embodiment also has various effects similar to those of the first embodiment.
In addition, although this embodiment demonstrated the case where the control valve type storage battery 10 was installed horizontally, it can also be installed in an upright state. In this case, by fixing the gantry mounting rib 33X to the gantry 40, the storage battery 10 can be prevented from jumping up when subjected to a strong impact such as an earthquake.

Each embodiment mentioned above shows one mode of the present invention to the last, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, in each of the above-described embodiments, the case where the lateral ribs 33 are provided at intervals has been described. However, the present invention is not limited to this, and the lateral ribs 33 may be provided over the entire circumference of the joint portion 15. FIG. 10 shows an example in which the lateral rib 33 is provided over the entire circumference, and FIG. 11 shows an example in which the gantry mounting rib 33X and the lateral rib 33 are provided over the entire circumference. In this configuration, since the horizontal ribs 33 (including the gantry mounting ribs 33X) are provided over the entire circumference of the joint portion 15, the cross-sectional area of the horizontal ribs 33 can be secured widely and sufficient to support the own weight of the storage battery 10. The rib which has intensity | strength can be provided easily and the intensity | strength of the junction part 15 whole can be improved more.

1, 10 Control valve type storage battery 2, 11 Battery case 3, 12 Lid 4, 4, 40 Storage battery storage frame (frame)
5, 51 Pop-out prevention metal fitting 15 Joint portion 14 Control valve 21 Battery case body 22, 22A, 22B Side surface 31 Rib 32 Vertical rib 33 Horizontal rib 33X Mounting rib 41 Shelf plate 45 Bolt

Claims (5)

A rib that protrudes outward from the lid on the side of the battery case and has sufficient strength to support its own weight ,
The ribs extend in the depth direction of the battery case, a plurality of vertical ribs provided at different intervals along the joint part between the battery case and the lid part, and along the joint part. A horizontal rib extending between the vertical ribs,
The horizontal rib is provided between the vertical ribs having a relatively long interval, and air is released between the vertical ribs having a relatively short interval in the depth direction of the battery case. Battery.   The battery case is provided with a recess into which the protrusion of the lid is fitted,
  2. The control valve storage battery according to claim 1, wherein the vertical rib extends through a side of the concave portion, and the horizontal rib is provided on a side of the concave portion.   The lateral rib is formed in a width that covers the entire side of the concave portion in a sectional view in the depth direction of the battery case,
  3. The control valve storage battery according to claim 2, wherein a side opposite to the lateral rib between the longitudinal ribs having a relatively long interval is opened in a depth direction of the battery case.   On the side surface of the battery case, a draft angle is attached to make it easier to pull out the molding die toward the lower direction which is the depth direction of the battery case,
  The height of the vertical rib from the side surface is formed so as to cancel out the inclination of the draft angle, and the end surface of the vertical rib is formed as a vertical surface extending in the depth direction of the battery case. The control valve type storage battery according to claim 3. The said horizontal rib is a rib for fixing this battery case to a mount frame, when arrange | positioning in the horizontal position which made the side of the said battery case the lower side, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The control valve storage battery as described in the item.

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