JP4715092B2 - Control valve type lead acid battery - Google Patents

Description

  The present invention relates to a control valve type lead storage battery, and relates to an apparatus for handling the exhaust.

  The storage battery is used while performing a charging operation. In the case of a storage battery containing water in the electrolyte, such as a lead storage battery, a large amount of gas containing hydrogen and oxygen is generated at the end of charging, and a small amount of hydrogen gas is generated during discharge and standing, An apparatus for treating such gases in a lump has been used for a long time. In the case of a control valve type lead-acid battery with a limited amount of electrolyte, an exhaust valve with a gas absorption function is attached to the exhaust port, so that gas containing hydrogen and oxygen is rarely generated outside the cell. In an application that is rapidly charged with a large current, it may be necessary to process a gas containing hydrogen in a lump. For this reason, a single-cell or monoblock control valve type lead storage battery in which an exhaust conduit having an opening in a certain direction is provided integrally with the storage battery body has been manufactured.

  The exhaust valve is mounted after the electrolyte is injected into the cell or after charging. In either case, gas generation or temperature rise is caused by the reaction between the active substance in the polar group and the electrolyte. As a result, the internal pressure of the cell rises, and the attached exhaust valve may float or disengage. In order to prevent such an exhaust valve from being lifted or detached, charging may be performed after attaching a cover lid that collectively covers the exhaust ports. However, when an unformed electrode plate is used, when chemical conversion is performed with a cover lid attached, the splash of electrolyte accompanying gas generation remains under the cover lid, and the lead-acid battery is used by turning it over. In some cases, it may ooze out from the part where the cover lid is attached.

  Therefore, when using an unformed electrode plate, after mounting the exhaust valve, temporarily form a temporary cover lid, and after formation, remove splashes of the electrolyte by washing with water, and then temporarily cover the cover. Instead of attaching a regular cover lid.

JP-A-56-107471

  Patent Document 1 discloses an example of an apparatus that collectively processes the exhaust gas described above.

  In the case of the above-mentioned Patent Document 1, since the opening direction of the exhaust conduit is determined, after many batteries are housed in a narrow rack or the like and electrically connected, the openings of the conduit are connected with a rubber hose or the like. In order to prevent the hose from being bent when it is led out of the rack, an extra space is required and it is necessary to surround a long hose. In addition, if the opening of the exhaust conduit is unidirectional, a header is required to handle a plurality of batteries. In addition, along with this, dust tends to stay on the upper surface of the battery during long-term use, and the cleaning may become incomplete.

  Further, in the case where the temporary cover lid is removed, not only the man-hours are required, but also the removal of the electrolyte droplets may be insufficient due to the temporary cover lid.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that the exhaust valve is attached to the exhaust port corresponding to each cell, the exhaust valve is straddled, and the lid is fixed on both sides thereof, and the width thereof is A collective exhaust port that includes a valve pressing plate that does not exceed the inner diameter of the exhaust port, covers the exhaust port corresponding to each cell at the same time, and exhausts exhaust from each exhaust port, and the collective exhaust port Is a control valve type lead-acid battery having a battery cover with a cap seat to which an exhaust cap can be attached.

  According to a second aspect of the present invention, in the control valve type lead-acid battery according to the first aspect, the exhaust cap has an exhaust pipe in two directions or one direction.

  According to a third aspect of the present invention, in the control valve type lead-acid battery according to the first aspect, the exhaust cap has an exhaust pipe in the opposite direction.

  According to a fourth aspect of the present invention, in the control valve type lead-acid battery according to the first aspect, the exhaust cap and the cap seat are provided with unevenness that is attached by changing the direction of the exhaust cap by 45 degrees. .

  According to the first aspect of the present invention, in addition to the problem that the exhaust valve is not dropped or incompletely attached, and the problem that the remaining electrolyte is exuded is not generated, collective exhaust through the exhaust cap is realized. A control valve type lead-acid battery capable of being obtained is obtained.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, a control valve type lead-acid battery capable of easily realizing collective exhaust through the exhaust cap is obtained.

  According to the third aspect of the invention, in addition to the effect of the first aspect of the invention, by selecting an exhaust pipe directed in a necessary direction, the exhaust caps are connected in a shortest distance using one exhaust pipe. can do.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1, by selecting an exhaust pipe directed in a necessary direction, the exhaust caps are connected in a shortest distance using one exhaust pipe. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a partial plan view of a 12V monoblock control valve type lead-acid battery comprising six cells connected in series according to an embodiment of the present invention, showing a part on one side in the long side direction. ing. FIG. 1 shows a state in which a battery cover described later is removed. In FIG. 1, 1 is a battery body, 2 is a lid, 3, 3 'is a part of the lid 2, and an exhaust part recessed corresponding to each cell, 4 is the center of the exhaust part 3, 3' The exhaust port 5 is provided with a rubber-like cap-like exhaust valve that is attached to the exhaust port 4, and 6 is fitted to the lid 2 so as to straddle the exhaust valve 5, The valve pressing plates that hold and fix the vicinity are shown. In the figure, 11 and 12 are a positive terminal and a negative terminal provided close to one side in the long side direction of the battery body 1, 13 is a hanging part for suspending the battery body 1, and 14 is the positive terminal 11 and the negative terminal. Resin fillers for filling the base portion of the terminal 12 in an airtight and liquid tight manner are shown.

  In the above embodiment, the short side length in which the positive electrode terminal 11 and the negative electrode terminal 12 are provided is 130 mm or less, the distance between the center lines of each terminal is 51% or less of the short side length, and the lid is between the terminals. The protrusion part 15 protruded with respect to the surface of 2 is provided. Here, when the short side length is set to 130 mm or less, when the DC power supply of the equipment mounted on the rack having a predetermined dimension (19 inches or 23 inches) is a 48V system, four batteries are juxtaposed. This is because the battery can be stored without waste by utilizing space effectively. That is, in consideration of providing a heat dissipation space between juxtaposed batteries, the short side length should be 110 mm or less for a 19-inch rack, and the short side length should be 130 mm or less for a 23-inch rack. Based on. Also, the reason why the distance between the center lines of the terminals 11 and 12 is 51% or less of the short side length is that M8 or more terminals are provided in order to satisfy the discharge capacity and the maximum discharge current of the battery for the above application. This is because the area occupied by the resin filler filling the base is secured. Also, the positive and negative terminals 11 and 12 are provided close to one side in the long side direction, and the protrusion 15 is provided so that the terminals are positioned on the front side of the rack when installed in the rack described above. Because it is possible to work safely and efficiently.

  FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1, but FIG. 2 also shows a cross-sectional view of the battery cover 9 that covers the exhaust parts 3 and 3 ′. As shown in FIG. 2, the valve pressing plate 6 is fitted with fitting convex portions 7 and 7 ′ provided near both ends thereof and fitting concave portions 8 and 8 ′ provided on the lid 2. It is fixed. Further, as shown in FIG. 2, a bulging portion 10 is provided in a part of the battery cover lid 9 corresponding to the position of the exhaust valve 5, and the bulging portion 10 causes the flexible valve holding plate 6 to pass through. The exhaust valve 5 is held down so that the exhaust valve 5 is securely attached to the exhaust port 4 and the exhaust valve 5 is prevented from being lifted up. The battery cover 9 is preferably made of the same ABS or polypropylene as the cover 2, and the valve pressing plate 6 is preferably made of polypropylene. In addition, in order to ensure that the exhaust valve 5 can be attached to the exhaust port 4 by the bulging portion 10 described above, the distance between the inner surface of the battery cover lid 9 and the upper surface of the valve pressing plate 6 is set to 2.0 to 2.0. The distance between the lower surface of the bulging portion 10 of the battery cover lid 9 and the upper surface of the valve pressing plate 6 is about 0.2 to 0.6 mm, preferably about 0.3 to 0.5 mm. Is good.

  FIG. 3 shows various shapes of the valve pressing plate. FIG. 3A shows the valve pressing plate 6 shown in FIGS. On the other hand, FIG. 3B shows a valve pressing plate 6 ′ provided with small holes near both ends, and a fitting convex part is provided on the lid, and the fitting convex part and the small hole are fitted. It is intended to be fixed. FIG. 3C shows a valve pressing plate 6 ″ that is firmly inserted and fixed to the upper part of the inner wall of the exhaust part 3 ′. This valve pressing plate 6 ″ does not require processing on the lid 2 side.

  FIG. 4 shows a plate-like valve pressing plate 61 that is a thin elongated sheet or a roll covering a plurality of exhaust valves 5 arranged in a straight line, and the lid 2 provided beside the exhaust part 3 ′. The protrusion 11 is fixed by heat welding or ultrasonic bonding. With such a valve pressing plate 61, the work can be mechanized by a combination of a sheet feeding mechanism, an ultrasonic horn, a sheet cutting mechanism, and the like. The valve pressing plate 61 does not necessarily have a plate shape, and may be replaced with a thin line.

  If the above-described valve pressing plate is wide enough to cover the exhaust valve, the upper part of the exhaust valve is not sufficiently cleaned during water washing. For this reason, if the flush water hits at least a part of the top of the exhaust valve by water injection from above, the water also passes between the exhaust valve and the valve holding plate, and the flush water can be easily removed. Become. Therefore, it is preferable that the width of the valve pressing plate does not exceed the inner diameter of the exhaust port.

  In the above-described embodiment, as in the past, one cover plate is placed on a plurality of exhaust valves, and is fixed to the battery lid by bonding, welding, fitting, or the like at the entire circumference or at several locations around the cover plate. Problem, that is, when the cover plate warps during long-term use, especially in high-temperature environments, and the exhaust function of some exhaust valves and the poor airtightness of the battery deteriorates the function of the battery. The exhaust valves can be held evenly, which can contribute to improving the reliability of the battery.

  The above-described embodiment is particularly effective for monoblock batteries, but is also effective for single-cell batteries.

  In addition, the lead-acid battery may be manufactured by first injecting an electrolytic solution and then injecting the electrolytic solution first after attaching an exhaust valve and a valve pressing plate straddling the exhaust valve. It is possible to charge and then attach an exhaust valve and a valve pressing plate that straddles it. With either method, the above-described effects can be obtained, and the man-hours associated with the use of a temporary cover plate This is advantageous in terms of cost because it can save time and save auxiliary materials such as adhesive tape.

  Next, an example in which the battery cover lid 9 having the collective exhaust port 40 for exhausting exhaust from the exhaust ports of the respective cells is attached to the embodiment of FIG. 1 will be described with reference to FIG. 5A shows a state in which the exhaust cap 50 for guiding the exhaust gas passing through the collective exhaust port to the outside is attached to the battery cover lid 9, and FIG. 5B shows a state in which the exhaust cap 50 is not attached. Show. The exhaust cap 50 is provided with exhaust pipes 60, 60 ′ in the opposite direction so as to be attached to the cap seat 30 of the battery cover lid 9.

  FIG. 6 is a cross-sectional view taken along the line AA ′ of FIG. 5A showing the relationship between the exhaust cap 50 and the cap seat 30. The cap seat 30 of the battery cover lid 9 surrounds the collective exhaust port 40 and is circular. A circumferential groove 91 is provided so as to engage with the convex edge 51 provided on the lower peripheral edge of the exhaust cap 50. In the circumferential groove 91, the convex edge 51 of the exhaust cap 50 is adhered with an adhesive or ultrasonic waves so that the exhaust cap 50 is attached to the cap seat 30 of the battery cover lid 9. In this case, since the exhaust pipes 60 and 60 ′ can take any direction, a pipe connected to the exhaust pipes 60 and 60 ′ is prepared in advance so that the shortest pipe can be provided for a predetermined installation place. Can be kept.

  FIG. 7 shows another shape of the exhaust cap 50. Eight small protrusions 52 are provided on the convex edge 51 provided on the periphery of the exhaust cap 50 ′, divided at an angle of 45 degrees. Although not shown, the corresponding battery cover lid is provided with eight recesses for receiving the small protrusions 52 in the circumferential groove. When an exhaust cap 50 ′ having exhaust pipes 60, 60 ′ in the opposite direction as shown in the figure is used, the exhaust cap 50 ′ is placed in a direction in which the direction of the exhaust pipes 60, 60 ′ is a right angle and its center. It can be adhered in an orderly manner. It should be noted that a recess can be provided on the battery cover lid side and a small protrusion can be provided on the exhaust cap 50 'side, both of which have the same effect. Also, in order to define the direction, it is sufficient to provide one recess on the battery cover or exhaust cap and eight recesses on the exhaust cap or battery cover lid at an angle of 45 degrees. However, due to the fact that it may take a long time to install and the engagement between the small protrusions and the recesses is not evenly arranged, it is better to provide the exhaust cap and the cover with the small protrusions and the recesses respectively. The adhesive strength with the seat can be increased.

  FIG. 8 shows the shape of an exhaust cap 50 ″ provided with an exhaust pipe 60 ″ in only one direction. In the case of individually handling storage batteries composed of a single cell or in the case of one cell in a monoblock storage battery, the exhaust pipe need only be in one direction, and thus it can be formed in this shape. In this case, from the standpoint of unifying parts, the exhaust pipe that is not connected to other parts may be closed by plugging it. If used, it is advantageous in terms of mounting work.

  FIG. 9 shows a shape in which the exhaust cap 50 is attached to the cap seat 30 by fitting. If the exhaust cap 50 is made of a flexible material such as polyethylene or polypropylene by a high pressure method, it can be detachably attached to the battery cover lid 9 by the small peripheral edge 54 around the tube foot 53 formed in the lower part thereof. .

  FIG. 10 is a perspective view of the vicinity of the positive electrode terminal 11 and the negative electrode terminal 12 of the control valve type lead storage battery according to the above-described embodiment, and is provided with a protruding portion 15 protruding from the surface of the lid 2.

  By providing the protrusion 15 described above, for example, as shown in FIG. 11, the positive electrode terminal 11 of one control valve type lead storage battery 101 and the negative electrode terminal 12 of another control valve type lead storage battery 102 are connected to each other. In the case where the connection is performed, it is possible to prevent the connection body 100 from rotating and short-circuiting at the time of tightening.

  FIG. 12 is an example of another embodiment of a control valve type lead-acid battery using the positive electrode terminal 11 and the negative electrode terminal 12 as tab terminals. In this embodiment, a protruding portion 15 ′ that protrudes from the surface of the side surface (battery case) of the main body 1 is provided, and description of the other portions is omitted.

  By providing the above-described protruding portion 15 ′, positioning can be easily performed when connecting to a device having a connecting portion that fits into the tab terminal.

  In each of the above-mentioned shapes, rubber or a synthetic resin pipe having rubber-like elasticity is inserted into the exhaust pipes 60 and 60 ′ and connected to the exhaust caps in the vicinity of each other, and when hydrogen gas is generated, this is safe. Try to lead to the place. In addition, an ignition prevention filter can be attached to the end of the pipe.

  If the structure is such that the exhaust cap can be attached in this manner, as described above, in the case of a storage battery in which the positive and negative terminals are moved to one side in the long side direction of the battery, the terminals are placed side by side with the maintenance surface facing the maintenance surface. In many cases, they are installed in a narrow rack and used together with communication equipment. In this case, since it is necessary to remove from the periphery of the battery the gas that normally contains an acceptable amount of acid mist and hydrogen that may rarely escape, it is equipped with a device that handles such exhaust. If it is a battery, when it arranges according to various demands of communication equipment, it can respond flexibly according to the installation site, and as a result, an excellent environment can be maintained.

  In addition, although embodiment mentioned above of FIG. 1 and FIG. 5 demonstrated as an example the storage battery which put the positive and negative terminal in the one side of the long side direction of a battery, it is not limited to such a form. .

  As described above, when the present invention is used as a DC power source for communication equipment mounted on a rack having a predetermined size, it can be stored in the effective space of the rack without waste, and the positive and negative terminals are long. Since the installation work can be performed safely and efficiently by providing the projections on one side in the side direction and preventing the short circuit between the terminals during the work, the industrial applicability is very large.

The partial top view except the battery cover lid of the control valve type lead acid battery which concerns on embodiment of this invention. Sectional drawing of the AA 'part of FIG. 1 shown with the cross section of the battery covering cover which attached the battery covering cover similarly. (A) is the valve pressing plate of FIG. 1, (B) is another valve pressing plate, (C) is a top view of another valve pressing plate. The top view of a plate-shaped valve pressing plate. (A) The top view of the control valve type lead acid battery which attached the exhaust cap which concerns on embodiment of this invention, (B) The partial side view of the state of the upper part of the storage battery in the state which does not attach an exhaust cap. Sectional drawing of the A-A 'part of FIG. 1 (A) which shows the relationship between an exhaust cap and a cap seat. The figure which shows the other shape of an exhaust cap same as the above. The figure which shows other shape of an exhaust cap same as the above. The figure which shows the shape which attaches an exhaust cap to a cap seat by fitting. The perspective view of the positive electrode terminal vicinity of the control valve type lead acid battery which concerns on embodiment of this invention, and negative electrode terminal. The perspective view of the state which connected the control valve type lead acid battery of FIG. The side view of the positive electrode terminal and negative electrode terminal vicinity of the control valve type lead acid battery which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery main body 2 Lid 3, 3 'exhaust part 4 Exhaust port 5 Exhaust valve 6, 6', 6 "Valve holding plate 11 Positive electrode terminal 12 Negative electrode terminal 15 Protrusion part 30 Cap seat 40 Collective exhaust port 50, 50 'Exhaust cap 60 , 60 ', 60 "exhaust pipe

Claims (4)

An exhaust valve attached to an exhaust port corresponding to each cell; and a valve pressing plate that spans the exhaust valve and is fixed to the lid on both sides thereof, the width of which does not exceed the inner diameter of the exhaust port , and the lid In addition, a battery cover lid having a collective exhaust port for collectively exhausting exhaust from each exhaust port and a cap seat that allows an exhaust cap to be attached to the collective exhaust port. A valve-regulated lead-acid battery equipped with The control valve type lead acid battery according to claim 1 , wherein the exhaust cap has an exhaust pipe in two directions or one direction. The control valve type lead acid battery according to claim 1 , wherein the exhaust cap has an exhaust pipe in the opposite direction. The control valve-type lead-acid battery according to claim 1 , wherein the exhaust cap and the cap seat are provided with irregularities to be attached by changing the direction of the exhaust cap by 45 degrees.

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