JP2006196341A - Control valve type lead acid battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lead acid battery having superior stability in valve-opening pressure and valve-closing pressure of a control valve, restraining overflow, easily reduced in size, and superior in reliability. <P>SOLUTION: The control valve type lead acid battery is provided with a battery lid 23 a battery can equipped with a plurality of cell chambers, a plurality of liquid injection rooms 43, in correspondence with the cell rooms, communication holes 44 making each liquid injection chamber communicate with the corresponding cell chamber, and a tap body 24 occluding the plurality of liquid injection chamber en bloc. The tap body 24 corresponds to the plurality of cell chambers and is provided with a plurality of control valves 51 for opening and closing according to the internal pressures of the cell chambers. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to the structure of a control valve type lead storage battery.

  Control valve type lead-acid batteries are used for various applications such as for electric vehicles and for power backup. Above all, lead-acid batteries used for motorbikes and motorcycles have a control valve-type lead-acid battery instead of the conventional liquid-type open-cell battery because there is no liquid leakage and maintenance work is reduced. Widely used.

  Such a control valve type lead-acid battery for motorcycles was shipped as a product with the electrolyte not yet poured in order to suppress self-discharge during the distribution process, and was packaged at the start of battery use. A form of injecting a dilute sulfuric acid electrolyte into the battery is very commonly used.

  As a structure of such a control valve type lead-acid battery, for example, a structure in which a liquid injection hole and an exhaust hole are individually provided as shown in Patent Document 1 is known. In this structure, as shown in FIG. 1, a liquid injection hole 14 and an exhaust hole 15 are individually provided in a battery lid 13 that covers a battery case 10 having a cell chamber 11 in which a cell 12 is accommodated. In addition, the electrolytic solution is injected from the injection hole 14 and after the injection, the plug 16 is sealed. Then, a cap-shaped valve element 18 is attached to the exhaust cylinder 17 provided in the exhaust hole 15. Further, in order to prevent the cap-shaped valve body 18 from falling off the exhaust cylinder 17, an upper lid 19 facing the top surface of the valve body 18 is joined to the battery lid 13.

  The cap-shaped valve body 18 prevents atmospheric oxygen gas from entering the cell chamber 11, and the internal pressure in the cell chamber 11 increases due to gas generated from the cell 12 based on the battery charging operation or the like. In this case, the gas inside the cell chamber 11 is opened to the atmosphere, and it functions as a control valve for releasing the gas to the atmosphere.

  On the other hand, in a control valve type lead storage battery that is shipped in a state of being injected at the time of product shipment, it is very common that the injection hole and the exhaust hole are not provided separately, but the exhaust hole 15 also serves as the injection hole. It is. In this case, a dedicated liquid injection facility is used, the inside of the cell chamber 11 is decompressed, and a dedicated liquid injection nozzle is inserted into the liquid injection hole to perform liquid injection. After the injection, the valve body 18 is attached to the exhaust cylinder 17, and the upper lid 12 is joined to the battery lid 13 by ultrasonic welding or the like.

  In a control valve type lead-acid battery, such as a battery for motorcycles, in which a general consumer who is a buyer performs a liquid injection operation, after the liquid injection operation, a valve body is attached to the exhaust tube, and the upper lid is the battery lid. It is practically impossible for general consumers to perform operations such as joining. In addition, in order to increase the reliability as a control valve, the exhaust hole is formed with a relatively small diameter of about several millimeters, so that it is also practical for a general consumer to manually inject liquid through the exhaust hole. Impossible. Therefore, the exhaust hole and the liquid injection hole are provided separately, the control valve part is in a completed state at the time of product shipment, and the liquid injection hole is generally formed with a larger diameter so that the purchaser can easily perform the liquid injection work. Is.

  Although the structure of such patent document 1 is excellent in workability | operativity when a general consumer performs liquid injection operation | work, it had the following subjects.

  The first problem is that the exhaust hole and the liquid injection hole are provided separately, so each area is required, and the area of the top surface of the battery cover must be secured accordingly. It is a problem that it is difficult to make.

  The second problem is that since the exhaust hole 15 directly faces the cell chamber 11, splashes of the electrolytic solution adhere to the exhaust cylinder 17 together with the gas generated during charging, and in the worst case, this gas When discharged from the valve body 18, there is a risk that the electrolyte droplets are discharged out of the battery together with the gas.

At the same time, the electrolytic solution adhering to the exhaust cylinder 17 causes the valve opening pressure and valve closing pressure of the control valve to vary. In particular, when the valve element 18 is fixed to the exhaust cylinder 17 due to the sulfuric acid content in the electrolyte and the valve opening pressure rises abnormally, the battery case expands and deforms due to the battery internal pressure. Further, once the valve body 18 is fixed to the exhaust cylinder 17 in this way, even if the exhaust cylinder 17 and the valve body 18 are separated by the valve opening operation, the airtightness between the exhaust cylinder 17 and the valve body 18 is impaired. In some cases, the valve closing operation is not performed, the internal negative electrode plate is oxidized by oxygen in the atmosphere, and the battery capacity rapidly decreases.
Japanese Utility Model Publication No. 63-87770

  The present invention relates to a control valve type lead-acid battery that is shipped in a non-injected state and injects an electrolyte immediately before use, such as a motorcycle battery, and has an exhaust hole and an injection hole as described above. Eliminates the obstacles to downsizing the battery lid that occur when it is provided individually. In addition, without impairing the workability during the liquid injection work, the adhesion of electrolyte droplets to the control valve structure such as the valve body and exhaust pipe is suppressed, and the valve opening pressure and valve closing pressure of the control valve are stabilized. It aims at providing the control valve type lead acid battery excellent in reliability by suppressing the overflow of this.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present invention has a battery lid for closing a battery case provided with a plurality of cell chambers, and the battery lid corresponds to the plurality of cell chambers. A plurality of liquid injection chambers are provided, each having a communication hole that allows communication between the corresponding liquid injection chamber and the cell chamber, and a plug body that collectively blocks the liquid injection chambers. A control valve type lead-acid battery corresponding to a plurality of the cell chambers and provided with a plurality of control valves opened and closed according to the internal pressure of the cell chambers is shown.

  In addition, the invention according to claim 2 of the present invention is the control valve type lead-acid battery according to claim 1, wherein the plug body includes a fitting portion that fits over the entire circumference of the side wall of the liquid injection chamber, and An exhaust hole corresponding to the liquid injection chamber, an exhaust cylinder provided around the exhaust hole, a cap-shaped valve body mounted on the exhaust cylinder, and an upper plate provided to face the top surface of the cap-shaped valve body; It is characterized by comprising a control valve comprising

  Furthermore, the invention according to claim 3 of the present invention is the control valve type lead-acid battery according to claim 1, wherein the plug body includes a fitting portion that fits over the entire circumference of the side wall of the liquid injection chamber, and A plurality of exhaust holes provided corresponding to the liquid injection chamber, a sheet-like valve body that collectively closes the plurality of exhaust holes, an elastic member that presses the sheet-like valve body toward the exhaust hole, and an elastic member And a control valve comprising an upper plate for covering.

  And the invention which concerns on Claim 4 of this invention is the control valve type lead acid battery which has the structure of Claims 1-3, and between the said injection chamber and the said cell chamber in the said injection chamber with the said communicating hole. A hollow cylinder that can be communicated is arranged.

  According to the configuration of claims 1 to 4 as described above, the liquid injection work can be easily performed from the liquid injection hole formed with a relatively large diameter, and after the liquid injection work is completed, the control valve is integrated. The control valve can be easily formed in the battery by installing the built-in stopper in the injection chamber, and the exhaust tube or exhaust hole is placed on top of the injection chamber, so it is occupied on the battery lid. The area can be made smaller, which is extremely advantageous in terms of battery miniaturization.

  In addition, since the liquid injection chamber is provided between the exhaust tube or the exhaust hole and the cell chamber, it is possible to suppress adhesion of the electrolyte droplet generated in the cell chamber to the exhaust tube and the exhaust hole. In addition, the valve opening pressure and valve closing pressure of the control valve can be stabilized, and the electrolyte can be prevented from overflowing, thereby improving the reliability of the battery.

  In particular, according to the configuration of the second aspect, the height of the control valve can be shortened, so that the battery can be further miniaturized.

  In particular, according to the configuration of the fourth aspect, the liquid injection is performed smoothly, the liquid overflow during the liquid injection is suppressed, and the liquid injection time can be shortened.

  Hereinafter, the configuration of a control valve type lead storage battery according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 2 is a view showing the appearance of the control valve type lead storage battery (hereinafter referred to as battery) according to the first embodiment of the present invention. The battery 21 of the present invention has a configuration in which a battery case 22 containing cells (not shown) is closed with a battery lid 23. As shown in FIG. 3, the battery case 22 is partitioned into a plurality of cell chambers 32 by partition walls 31.

  FIG. 4 is an exploded view showing components of the battery lid 23 and the plug 24 used in the battery 21 of the present invention. The battery lid 23 includes a plurality of liquid injection chambers 43 corresponding to each of the plurality of cell chambers 32 provided. In addition, a communication hole 44 for communicating between the liquid injection chamber 43 and the cell chamber 32 corresponding to each other is provided. The communication hole 44 is used to smoothly introduce the electrolytic solution injected into the injection chamber 43 into the cell chamber 32 and / or to allow the electrolytic solution to flow into the cell chamber 32. Provides a path for discharging air out of the battery. For reasons that will be described later, it is preferable to provide a hollow cylinder 45 that communicates the cell chamber 32 and the liquid injection chamber 43 separately from the communication hole 44.

  In the battery 21 of the present invention, the battery lid 23 is provided with a plug 24 that collectively closes the plurality of liquid injection chambers 43. The plug body 24 is provided with a plurality of control valves corresponding to the plurality of cell chambers 32 and opened / closed according to the internal pressure of the cell chamber 32.

  As a preferable configuration of the plug body 24 and the control valve 51 provided on the plug body 24, the configurations as shown in FIGS. 4 and 5 can be used.

  That is, the plug body 24 includes a fitting portion 46 that fits over the entire circumference of the side wall of each liquid injection chamber 43, an exhaust hole 47 provided corresponding to each liquid injection chamber 43, and the periphery of the exhaust hole 47. And a control valve 51 including a cap-shaped valve body 49 attached to the exhaust cylinder 48 and an upper plate 50 facing the top surface of the valve body 49. 4 shows an example in which six control valves are arranged in a row on the plug 24, and FIG. 5 shows a cross section of two control valve portions therein.

  The operation of the control valve 51 shown in FIG. 4 is as follows. In other words, the exhaust hole 47 is closed by the valve body 49 attached to the exhaust cylinder 48, and the cell chamber 32 is kept airtight. When the internal pressure of the cell chamber 32 exceeds a predetermined value due to gas generation due to battery charging or the like, a gap is generated between the cap-shaped valve body 49 and the exhaust cylinder 48, and the cell chamber 32 is opened through the gap. (Valve opening operation), the internal pressure in the cell chamber 32 decreases. When the internal pressure decreases to a predetermined value, the valve body 49 and the exhaust cylinder 48 come into close contact again, and the exhaust hole 47 is closed (valve closed).

  In order to prevent the valve body 49 from falling off the exhaust cylinder 48 due to an increase in internal pressure, it is necessary to provide an upper plate 50 facing the top surface of the valve body 49, and the upper plate 50 is attached to the plug body 24. Joined by ultrasonic welding or the like.

  The cap-shaped valve body 49 is deformed according to the internal pressure, and is made of a material having elasticity such as rubber in order to appropriately perform the valve opening operation and the valve closing operation. As an example, neoprene rubber having a hardness of 60 to 65 degrees based on international rubber hardness (IRHD) can be used. Moreover, not only this but other synthetic rubbers, such as a styrene butadiene rubber, can be used, if it has moderate hardness and a softness | flexibility.

  Further, airtightness is required between the fitting portion 46 and the liquid injection chamber 43 so that oxygen in the atmosphere does not flow into the cell chamber 32, and at least the fitting portion 46 has a side wall of the liquid injection chamber 43. It is necessary to fit in contact with the entire circumference. Therefore, it is preferable that the fitting portion 46 has elasticity and has an outer diameter set larger than the inner diameter of the liquid injection chamber 43 so that the fitting portion 46 is press-fitted into the liquid injection chamber 43.

  As described above, in the battery 21 of the present invention, the electrolytic solution is injected from the injection chamber 43 into the cell chamber 32 through the communication hole 44 or the cylindrical body 45, and then the above-described control is performed on the injection chamber 43. A plug 24 incorporating a valve 51 is attached. With such a configuration of the present invention, the control valve 51 can be disposed on the liquid injection chamber 43. Therefore, as shown in FIG. 1, the liquid injection chamber 43 and the control valve 51 are separately disposed on the upper surface of the battery lid. In comparison, the area of the upper surface of the battery lid can be reduced, which is extremely advantageous in reducing the size of the battery.

  Further, in the battery 21 of the present invention, since the exhaust hole 47 does not directly face the cell chamber 32, the valve body 49 and the exhaust cylinder of the electrolyte droplet generated in the cell chamber 32 when the battery is charged. Adhesion to 48 is suppressed, whereby the valve opening pressure and valve closing pressure of the control valve can be stabilized and the overflow of the electrolyte can be suppressed.

  As a more preferable embodiment of the present invention, as shown in FIGS. 4 and 5, a hollow cylinder 45 that communicates the liquid injection chamber 43 and the cell chamber 32 is provided separately from the communication hole 44. With such a configuration, when the electrolytic solution is poured directly from the electrolytic solution container 61 into the battery chamber 21 into the cell chamber 32, the overflow can be suppressed and the filling can be completed in a shorter time.

  As shown in FIG. 6, the electrolytic solution container 61 includes individual storage containers 63 that individually store the electrolyte solutions 62 to be injected into the respective cell chambers 32, as in the case of the injection chamber 43. It has the composition arranged in. The electrolyte container 61 is made of an acid-resistant synthetic resin such as polypropylene, for example. The mouth of the individual storage container 63 is sealed with a sheet-like member 64 such as an acid-resistant synthetic resin film.

  FIG. 7 shows that the electrolytic solution container 61 is inverted and attached to the battery lid 23 of the battery 21 of the present invention, thereby pouring the electrolytic solution 62 contained in the electrolytic solution container 61 into the cell chamber 32. FIG.

  By attaching the tip of the electrolyte container 61 to the cylinder 45, the sheet-like member 64 that seals the electrolyte container 61 is broken, and the electrolyte 62 inside passes through the inside of the cylinder 45 and enters the cell chamber 32. The solution is injected (path A shown in FIG. 7).

  On the other hand, since the communication hole 44 is provided separately from the cylindrical body 45, simultaneously with the liquid injection into the cell chamber 32, the replacement of the air existing in the cell chamber 32 with the electrolytic solution 62 (path B shown in FIG. 7). And the path C) and the replacement of the electrolytic solution 62 stored in the individual storage container 63 with the air 65 (path B shown in FIG. 7) are performed at the same time. It is injected quickly.

  Depending on the mounting state of the electrolytic solution container 61 on the battery lid 23, a part of the electrolytic solution 62 is injected into the cell chamber 32 through the communication hole 44, or the air 65 is passed through the cylindrical body 45. In any case, since two paths are formed between the injection chamber 43 and the cell chamber 32 by the communication hole 44 and the cylindrical body 45, the electrolyte solution and the air Replacement is performed smoothly.

  When the replacement of the air in the cell chamber 32 with the electrolytic solution is not performed smoothly, the rate at which the electrolytic solution penetrates into the cell chamber 32 exceeds the injection rate, so that the electrolytic solution is discharged from the injection chamber 43 to the battery. When the liquid overflows to the outside or the replacement of the electrolytic solution and air in the individual storage container 63 is not smoothly performed, the electrolyte outflow rate from the individual storage container 63 is extremely reduced. The time required is longer.

  In the preferred configuration of the present invention, as described above, the replacement of the electrolyte and air during injection is smoothly performed, so that the injection time is shortened and the effect of suppressing overflow during injection is reduced. Play.

  In addition, it is preferable to provide a slope at the tip of the cylinder 45 that opens toward the liquid injection chamber 43, so that the work of breaking through the sheet-like member 64 can be performed more smoothly at the tip of the cylinder 45. Further, as shown in FIG. 8, by forming a groove 45 a and a notch (not shown) in the vertical direction outside the cylindrical body 45, the replacement of air with the electrolytic solution can be performed more smoothly.

  After the liquid injection, as described above, the battery of the present invention can be obtained by attaching the plug 24 to the liquid injection chamber 43.

(Second Embodiment)
The battery according to the second embodiment of the present invention includes a plug provided with a control valve 95 shown in FIG. 9 in place of the plug body 24 provided with the control valve 25 in the battery 21 of the first embodiment described above. It is a battery equipped with a body 91. Other configurations such as a battery case and a battery lid are not different from the battery 21 of the first embodiment of the present invention described above.

  FIG. 10 shows a cross section around the control valve 95 in a state where the plug 91 is mounted on the battery lid 23.

  The plug body 91 has a fitting portion 92 that fits over the entire side wall of the liquid injection chamber 43. The fitting portion 92 has the same configuration and function as the fitting portion 46 provided in the plug body 24 in the first embodiment, and the entire side wall of the liquid injection chamber 43 is maintained in order to maintain the airtightness in the battery. The circumference and the fitting portion 92 are in close contact with each other.

  The plug body 91 is formed with exhaust holes 93 corresponding to the plurality of liquid injection chambers 43, and the plurality of exhaust holes 93 are closed with a plate-shaped valve body 94. An elastic seat 96 is disposed on the valve body 94, and an upper plate 97 is disposed on the seat 96. By joining the upper plate 97 to the plug body 91, a plurality of control valves 95 corresponding to each cell chamber are provided integrally with the plug body 91.

  FIG. 10 is a view showing a cross section in a state in which the sheet-like valve body 94, the seat 96 and the upper plate 97 are arranged on the exhaust hole 93. The seat 96 has elasticity and is disposed between the upper plate 97 and the valve body 94 in a compressed state in the thickness direction, and the valve body 94 is pressed by the elasticity so as to keep the exhaust hole 93 airtight.

  A sheet-like valve element 94 is brought into contact with the periphery of the exhaust hole 93 so as to cover the exhaust hole 93, thereby providing a function as the control valve 95.

  That is, when the battery is charged to generate gas from a cell (not shown) and the internal pressure of the cell chamber 32 is increased, the valve element 94 is elastically deformed upward in the drawing, so that the exhaust hole 93 is opened and the cell chamber is opened. The gas in 32 is discharged outside the cell chamber 32 (valve opening operation).

  Then, when the internal pressure of the cell chamber 32 decreases due to gas discharge in the cell chamber 32, the deformation of the valve element 94 is restored, the exhaust hole 93 is closed again, and the airtightness of the cell chamber 32 is restored (valve closing operation). ).

  The valve body 94 is made of a material having a certain degree of flexibility in the same manner as the valve body 49 of the first embodiment described above in order to be in close contact with the periphery of the exhaust hole 93 and ensure the airtightness of the cell chamber 32. Preferably, neoprene rubber having a hardness of 60 to 65 degrees based on international rubber hardness (IRHD) can be used as an example. Moreover, not only this but other synthetic rubbers, such as a styrene butadiene rubber, can be used, if it has moderate hardness and a softness | flexibility.

  The valve opening pressure and the valve closing pressure of the control valve 95 can be set by the pressing force of the seat 96 that presses the valve element 94. As the pressing force increases, the valve opening pressure and the valve closing pressure increase. By decreasing the pressing force, the valve opening pressure and the valve closing pressure tend to decrease. Set the pressing force according to. The pressing force is determined by the Young's modulus and thickness of the sheet 96 and the thickness reduction during compression.

  As the material of the seat 96, the valve opening pressure and the valve closing pressure are stabilized while the battery is used, so that the pressing force of the seat 96 can be maintained for a long period of time, that is, excellent in restoring property after compression. Use things. As a preferable example of the sheet 96, a sponge body having open cells of ethylene-propylene-diene methylene copolymer (EPDM) having a porosity of 90% can be used. In addition, other synthetic rubbers such as neoprene may be used.

  Since the sponge body having open cells is excellent in resilience after compression, the exhaust hole 93 can be quickly closed and closed when the battery internal pressure decreases.

  The battery according to the second embodiment of the present invention does not require the exhaust tube 48 as compared with the battery according to the first embodiment, so that the height dimension can be shortened and the battery can be downsized. Is preferable. Moreover, since the control valve 95 can be arrange | positioned on the liquid injection chamber 43 similarly to the battery of 1st Embodiment, the liquid injection chamber 43 and control valve which occupy the upper surface area of a battery cover compared with the conventional battery of FIG. The area of 95 can be made smaller, and there is a remarkable effect in downsizing the battery.

  Further, since the exhaust hole 93 and the valve body 94 do not directly face the cell chamber 32 and the liquid injection chamber 43 exists between them, the electrolyte droplets inside the cell chamber 32 are discharged to the exhaust hole 93 and the valve body 94. Adhesion is suppressed, and as a result, the valve opening pressure and the valve closing pressure of the control valve 95 can be remarkably stabilized and the electrolyte overflow can be suppressed.

  A battery (battery A) of the conventional example shown in FIG. 1, a battery (battery B) according to the first embodiment of the present invention, and a battery (battery C) according to the second embodiment of the present invention described above were prepared. The valve opening pressure and valve closing pressure of the control valve were measured. The valve pressure was measured by measuring the valve pressure after leaving the battery in the initial state and the battery in the initial state after being charged and discharged for 30 days at 40 ° C. to evaluate the stability of the valve pressure. .

  In the charge / discharge cycle, a discharge operation for discharging for 1 hour at a discharge current of 2.5A and a charge operation for charging for 80 minutes at a constant current of 2.5A were set to 1 cycle, and this charge / discharge cycle was set to 50 cycles. In this charging / discharging cycle, the ratio of the amount of charged electricity to the amount of discharged electricity was 133%, and compared with 110-120% that is normally performed, an overcharge cycle was made, and electrolyte droplets were easily generated.

  Table 1 shows the measurement results of the charge / discharge cycle and the valve opening pressure and the valve closing pressure before and after being left standing. The number of batteries was 6 for each battery. Therefore, since each battery has six control valves, the n number of valve pressure measurements is 36. Table 1 shows the maximum value, average value, and minimum value of the measurement results of n = 36, respectively, and the measured values of each valve pressure of the battery in the initial state before charging / discharging from each valve pressure after charging / discharging and leaving unattended. The subtracted value was shown as the amount of change. In all of the batteries A, B, and C in the initial state, no electrolyte overflow occurred from the control valve.

  From the results shown in Table 1, the battery C and the battery D of the present invention tend to slightly increase the valve opening pressure after being left through the charge / discharge cycle, but the degree of increase is higher than that of the battery A of the conventional example. It turns out that it is suppressed very low. Further, the increase in the valve opening pressure generally occurs in close contact with the periphery of the exhaust hole of the valve body and the exhaust pipe, but such an increase in the valve opening pressure is not within the range affecting the battery performance. In addition, none of the batteries B and C of the present invention produced an electrolyte from the control valve.

  On the other hand, the battery A of the conventional example had a significantly higher valve opening pressure after being left as compared with the battery of the present invention. In particular, the valve opening pressure increased to 74.2 kPa. When such valve opening pressure is reached, there is a risk that the battery case may be deformed due to an increase in internal pressure during charging. This phenomenon is caused by electrolyte droplets generated during the charge / discharge cycle adhering to the exhaust cylinder 17 and the valve body 18 and being fixed by the sulfuric acid in the electrolyte during standing.

  Further, in the battery A of the conventional example, the decrease in the valve closing pressure after being left is more significant than that of other batteries. In particular, an extremely low level of 0.9 kPa was observed.

  Such a decrease in the valve closing pressure is considered to be due to the following mechanism. That is, when the exhaust cylinder 17 and the valve body 18 are fixed, the valve opening pressure rises abnormally. However, when the valve is opened, the fixing portion is peeled off. However, the smoothness of the contact surface between the exhaust cylinder 17 and the valve body 18 is impaired at the time of peeling, and the adhesion between the exhaust cylinder 17 and the valve body 18 is impaired. Can be guessed.

  In addition, the battery A of the conventional example had bleeding of electrolyte from 24 control valves out of 36 control valves, and a very small amount of overflow was generated.

  As described above, the battery B and the battery C of the present invention can significantly stabilize the valve opening pressure and valve closing pressure of the control valve and suppress the overflow of the electrolyte compared to the conventional battery. And the control valve type lead acid battery excellent in reliability can be obtained.

  As described above, according to the present invention, the control valve is more reliable and easier to downsize than the conventional one. Therefore, the small control valve type lead for motorcycles and small UPSs. It is extremely suitable for storage batteries. It is useful as a highly reliable and miniaturized control valve type lead-acid battery that does not leak easily.

The figure which shows the structure of the battery of the conventional example The figure which shows the external appearance of the control valve type lead acid battery of this invention Diagram showing the battery case Exploded view showing the components of the battery lid Sectional drawing which shows the principal part of the battery of this invention Diagram showing electrolyte container Sectional drawing which shows the state which mounted | wore the battery cover with the electrolyte container Figure showing a cylinder The exploded view which shows the component of the battery cover by the 2nd Embodiment of this invention Sectional drawing which shows the principal part of the battery by the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Battery case 11 Cell chamber 12 Cell 13 Battery cover 14 Injection hole 15 Exhaust hole 16 Plug body 17 Exhaust pipe 18 Valve body 21 Battery 23 Battery cover 24 Plug body 31 Bulkhead 32 Cell chamber 43 Injection chamber 44 Communication hole 45 Cylindrical body 45a Groove portion 46 Fitting portion 47 Exhaust hole 48 Exhaust tube 49 Valve body 50 Upper plate 51 Control valve 61 Electrolyte container 62 Electrolyte 63 Individual storage container 64 Sheet-like member 65 Air 91 Plug body 92 Fitting portion 93 Exhaust hole 94 Valve Body 95 Control valve 96 Seat 97 Upper plate

Claims (4)

A battery lid for closing a battery case provided with a plurality of cell chambers, and a plurality of liquid injection chambers corresponding to the cell chambers are provided on the battery lid, and each of the corresponding liquid injection chambers and the cell chambers is provided A communication hole is provided, and a plug body that collectively closes the plurality of liquid injection chambers is provided. The plug body corresponds to the plurality of cell chambers and opens and closes according to the internal pressure of the cell chamber. A control valve type lead-acid battery comprising a control valve. The plug body includes a fitting portion that fits over the entire circumference of the side wall of the liquid injection chamber, an exhaust hole corresponding to the liquid injection chamber, an exhaust pipe provided around the exhaust hole, and the exhaust pipe. The control valve type lead-acid battery according to claim 1, further comprising a control valve including a cap-shaped valve body mounted and an upper plate provided to face the top surface of the cap-shaped valve body. The plug body includes a fitting portion that fits over the entire circumference of the side wall of the liquid injection chamber, and a plurality of exhaust holes provided corresponding to the liquid injection chamber, and the plurality of exhaust holes are collectively closed. 2. A control valve according to claim 1, further comprising: a control valve comprising: a sheet-like valve body that performs, an elastic member that presses the sheet-like valve body toward the exhaust hole, and an upper plate that covers the elastic member. Lead acid battery. 4. The control valve type according to claim 1, wherein a hollow cylindrical body that communicates between the liquid injection chamber and the cell chamber is disposed in the liquid injection chamber in addition to the communication hole. Lead acid battery.

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