JP2002042763A - Storage metallic frame of control valve type lead-acid battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing cost and to increase longevity of a set battery main body 8 using a control valve type lead-acid battery 1. SOLUTION: A pressure plate 2 exists between a storage metallic frame 3 and the control valve type lead-acid battery 1 positioned at the top part. Thereafter, an upper surface of the control valve type lead-acid battery 1 positioned at the top part of the storage metallic frame 3 is pressurized by welding the presser plate 2 with pressure by fastening a bolt 4 set on an upper surface of the storage metallic frame 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal frame for accommodating a plurality of control valve type lead-acid batteries.

[0002]

2. Description of the Related Art A control valve type lead-acid battery is characterized by being inexpensive and highly reliable. Therefore, a plurality of battery cells are connected in series to produce an assembled battery body. Used as a power source for Recently, there has been a strong demand for a longer life of the assembled battery body used as these power supplies.

[0003] That is, the control valve type lead-acid battery used in these assembled battery bodies uses a paste-type positive electrode plate and a paste-type negative electrode plate, and is laminated and welded through a retainer to produce an electrode plate group. It is common to use it in a state where it is inserted in a battery case so that the plate surface of the plate group faces the horizontal direction.

The control valve type lead-acid battery uses a paste-type positive electrode plate, a paste-type negative electrode plate, and a retainer, each of which is impregnated with a diluted sulfuric acid electrolytic solution. The feature is that there is almost no problem.

[0005] Generally, a plurality of these control valve type lead-acid batteries are connected in series as described above to prepare and use an assembled battery body. That is, as shown in FIG. 3, a plurality of control valve type lead-acid batteries 1 are installed in each section of a metal storage metal frame 3 partitioned in a grid shape. Then, each of the control valve type lead-acid batteries 1 is connected in series using the connection terminal 9 to produce the assembled battery body 8.

After assembling the battery pack body 8 in a metal cubicle (not shown) or the like in order to ensure safety, as shown in FIG. 3, a positive electrode extraction terminal located above the battery pack body 8 A lead wire is drawn out from 10 or the negative electrode take-out terminal 11 and connected to an external load, a charger or the like.

[0007]

However, a grid-like section is provided in the above-mentioned metal housing metal frame 3, and a control valve type lead-acid battery is inserted and fixed in each of the sections. The method of assembling the assembled battery body has a problem that the cost is high.

In view of this, a method is considered in which the number of sections is reduced by removing the sections formed in the metal housing frame 3 in the vertical direction to reduce the number of sections, and a plurality of control valve type lead-acid batteries are vertically stacked and fixed. Was done.

However, when using this method, the pressure applied to the electrode group in the battery case is different between the control valve type lead-acid battery located at the upper part and the control valve type lead-acid battery located at the lower part in the stacked state. It will be different. In addition, the control valve type lead-acid battery located at the upper part of the assembled battery main body has a problem that the life of the battery is shortened because the pressing force of the electrode plate group is not sufficient and the active material is easily dropped.

An object of the present invention is to reduce the number of sections by improving the structure of the storage metal frame, thereby reducing the cost of the assembled battery main body and extending the life of the assembled battery main body.

[0011]

In order to solve the above-mentioned problems, the present invention is to improve the structure of a metal housing frame.

That is, the first invention uses an electrode group formed by laminating a positive electrode plate, a negative electrode plate and a retainer, and mounts the electrode plate group on a resin container so that the plate surface is horizontal. The control valve type lead-acid battery is inserted and assembled, and the control valve type lead-acid battery is housed in the housing frame of the control valve-type lead storage battery. It is stored in the frame, there is a holding plate between the inner surface of the upper part of the storage metal frame and the upper surface of the control valve type lead-acid battery located at the top, the upper surface of the storage metal frame It is characterized in that the upper surface of the control valve type lead-acid battery located at the top is pressurized by pressing the holding plate by tightening the installed bolts.

The second invention uses an electrode group formed by laminating a positive electrode plate, a negative electrode plate, and a retainer, and inserts the electrode plate into a resin container so that the plate surface is horizontal. In the storage valve frame of the control valve type lead-acid battery that assembles the control valve type lead-acid battery and stores the control valve type lead-acid battery, the control valve type lead-acid battery is stacked on the storage metal frame in the up and down direction. A frame having compressed foam is present between the inner surface of the storage metal frame and the upper surface of the control valve type lead-acid battery located at the top. By body
It is characterized in that the upper surface of the control valve type lead storage battery located at the top is pressurized.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Manufacture of control valve type lead storage battery and assembled battery main body Using a conventionally used electrode group, insert it into a polypropylene resin container by a conventional method such that the plate surface of the electrode group is horizontal. Attach the lid, etc. to assemble the control valve type lead-acid battery. After that, a battery case was formed and the voltage became 2
V, a control valve type lead-acid battery having a rated capacity of 200 Ah was produced.

The 24 control-valve-type lead-acid batteries thus produced were inserted into three types of storage frames described later, respectively, and were placed in a state of being piled up by four to produce an assembled battery main body.

2. Test conditions In the following, the assembled battery body was tested in an atmosphere at an ambient temperature of 25 ± 2 ° C. That is, an assembled battery main body is manufactured using the control valve type lead-acid battery formed in the battery case, and supplementary charging is performed.
Discharge at 1 CA (discharge end voltage: 1.8 V / cell)
Measure the initial discharge capacity.

The assembled battery main body whose initial discharge capacity was measured was 20 V at 2.45 V / cell (limited current: 0.2 CA).
Charge for 0.1 hours and discharge at 0.1 CA (discharge end voltage: 1.8
(V / cell), a cycle life test was performed by repeating the charge / discharge pattern. When the discharge capacity of the assembled battery main body reached 70% of the initial discharge capacity described above, the life of the assembled battery main body was determined.

[0018]

(Embodiment 1) FIG. 1 shows a storage metal frame according to the present invention.
FIG. 4 is a schematic cross-sectional view of the structure of a battery pack main body 8 using 3. In the first embodiment, four control valve type lead-acid batteries 1 are inserted into a metal housing metal frame 3 in a stacked manner, and can be pressed downward from above by bolts 4 and holding plates 2. is there.

Since the holding plate 2 and the storage metal frame 3 need rigidity, they are processed and used for metal plates. The presser plate 2 is installed on the upper surface of the uppermost control valve type lead-acid battery 1, and the control valve type lead-acid battery 1 is pressurized from above by pressing the presser plate 2 downward using bolts 4. To form an assembled battery body 8.

That is, a screw hole (only two places are shown) is cut in advance on the upper surface of the housing metal frame 3, and a bolt 4 is passed through the screw hole and tightened via the holding plate 2.
This is a structure in which a control valve type lead storage battery 1 in which four units are stacked can be pressurized from above.

Then, the storage metal frame 3 containing the control valve type lead-acid battery 1 was covered with a frame 13 to form an assembled battery body 8 (FIG. 3). Other manufacturing methods and life test methods of the control valve type lead storage battery 1 and the assembled battery body 8 are as described above.

(Embodiment 2) FIG. 2 is a schematic sectional view showing the structure of a battery pack main body 8 using a storage metal frame 3 according to the present invention. In the second embodiment, similarly to the first embodiment, four control valve type lead-acid batteries 1 are inserted in the metal housing frame 3 in a stacked manner, and the frame 7 can pressurize the battery from above to below. It is like that.

In the space between the storage metal frame 3 and the lead-acid battery 1 of the control valve type, a frame 7 having a urethane foam material 6 is provided inside the space (FIG. 2). That is, by installing the frame 7 having the foam material 6 inside between the storage metal frame 3 and the control valve type lead storage battery 1, the control valve type lead storage battery 1 is added from above through the frame 7. It is a structure that can be pressed.

Then, the storage metal frame 3 containing the control valve type lead-acid battery 1 was covered with a frame 13 to form an assembled battery body 8 (FIG. 3). Other manufacturing methods and life test methods of the control valve type lead storage battery 1 and the assembled battery body 8 are as described above.

COMPARATIVE EXAMPLE As a comparative example, a control valve type lead-acid battery 1 was placed in a metal housing 3 without a pressurizing mechanism.
The battery packs were inserted one by one and covered with a frame 13 to form an assembled battery body 8 (FIG. 3). That is, in the comparative example, only the pressurization of the control valve type lead-acid battery 1 by its own weight is used, and this structure has been used conventionally. Other manufacturing methods and life test methods of the control valve type lead storage battery 1 and the assembled battery body 8 are as described above.

A cycle life test was performed using these assembled battery bodies 8. The life of the comparative example is set to 10
Table 1 shows the life of Examples 1 and 2 when 0 was set. From Table 1, it can be seen that when the present invention is used, the life of the battery pack body 8 can be extended.

When the present invention is used, the pressure applied to the electrode plate group 5 of the control valve type lead-acid battery 1 constituting the assembled battery body 8 is sufficient, so that the active material is less likely to fall off the grid, and It is considered that the cycle life of the valve-type lead storage battery has been improved.

On the other hand, when the frame 7 in which the foam material 6 shown in Example 2 is used as the pressurizing material is used, even if the thickness of the positive electrode plate or the negative electrode plate varies during the manufacturing, the presence of the foam material 6 As a result, a substantially uniform pressing force can be applied to each control valve type lead-acid battery, and more preferable results are obtained.

Further, according to the present invention, since the control valve type lead-acid battery 1 is used in an overlapping manner, the number of sections used in the vertical direction can be reduced, and the manufacturing cost of the assembled battery body 8 can be reduced. can do.

In this embodiment, the case where an inexpensive polypropylene resin is used as the material of the battery case is shown, but an acrylonitrile-butadiene-styrene resin (hereinafter, ABS) is used.
Called resin. ) Or a resin having a rigidity such as a resin-modified polyphenyl ether resin (hereinafter, referred to as a PPE resin) -based resin, the same good results were obtained.

[0031]

[Table 1]

[0032]

As described above, by using the present invention, the manufacturing cost of the assembled battery body can be reduced,
It is industrially superior in that the service life can be extended.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a battery pack main body using a storage metal frame according to a first embodiment.

FIG. 2 is a schematic sectional view of an assembled battery main body using a storage metal frame according to a second embodiment.

FIG. 3 is a schematic view showing a battery pack main body.

[Explanation of symbols]

1: Control valve type lead-acid battery, 2: Holding plate, 3: Storage frame,
4: bolt, 5: electrode group, 6: foam, 7: frame, 8:
Assembled battery body, 9: connection terminal, 10: positive electrode extraction terminal, 1
1: negative electrode extraction terminal, 12: H steel base, 13: frame

Claims (2)

[Claims] An electrode group formed by laminating a positive electrode plate, a negative electrode plate, and a retainer is inserted into a resin container so that the plate surface of the electrode plate is horizontal, and a control valve type is provided. Assembling the lead-acid battery and storing the control-valve-type lead-acid battery in the storage-metal frame of the control-valve-type lead-acid battery. ,
A presser plate exists between the inner surface of the upper part of the storage metal frame and the upper surface of the control valve type lead-acid battery located at the top, and by tightening a bolt installed on the upper surface of the storage metal frame. A storage frame for a control valve type lead-acid battery, wherein an upper surface of the control valve type lead-acid battery located at the uppermost position is pressurized by pressing the holding plate. 2. A control valve system comprising: an electrode group formed by laminating a positive electrode plate, a negative electrode plate, and a retainer, and inserted into a resin container so that the plate surface of the electrode plate group is horizontal. Assembling the lead-acid battery and storing the control-valve-type lead-acid battery in the storage-metal frame of the control-valve-type lead-acid battery. ,
A frame having a compressed foam material is present between the inner surface of the upper portion of the storage metal frame and the upper surface of the lead-acid battery of the control valve type located at the uppermost portion. A storage frame for a control valve type lead-acid battery, characterized in that the upper surface of the control valve type lead-acid battery located at the top is pressurized.