JPH05190169A - Stabilization of electrolyte in battery and device therefor - Google Patents

Abstract

PURPOSE:To shorten the manufacturing time for battery and economize the space for aging by pouring an electrolyte into a battery jar by using a centrifugal force and speedily uniformalizing the specific gravity distribution of the electrolyte by applying a centrifugal force to the battery jar set in the reverse direction. CONSTITUTION:A battery jar 1 into which an electrolyte is poured by using a centrifugal force by the conventional method is put into a sealed state by installing a cap 11, and put onto a stabilizing device for the electrolyte in the battery. A prescribed number of battery jars 1 are installed in succession to the battery holders 13 installed at equal, intervals on a rotary board 12 driven through an index device 19 and a driving pulley 17 by an index motor 18, so that the cap 11 is set outside in the radial direction. After the completion of installation, a motor connected with the shaft through a clutch is driven to revolve the rotary board 12. At this time, the pulley 17 is kept in stop state by the clutch. The electrolyte in the battery jar 1 is applied with a centrifugal force in the reverse direction to the case of pouring liquid, and the specific gravity distribution is made uniform.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stabilizing an electrolytic solution in a battery and an apparatus used therefor.

[0002]

2. Description of the Related Art In general, injection of an electrolytic solution into a sealed battery is generally performed after inserting a group of electrodes into a battery case. Then, during the injection of the electrolytic solution, it takes a long time for the electrolytic solution to penetrate into the electrode group because the density of the electrode group inserted in the battery case is very high.

Therefore, conventionally, a method of rotating the battery container and the liquid container at high speed and applying centrifugal force to inject the liquid has been implemented. This conventional electrolytic solution injecting method will be described. As shown in FIG. 4, the pole group 2 is inserted into the battery case 1 and the battery case 1 is replaced with the one shown in FIG.
It was attached to the electrolytic solution centrifugal injecting device 3 shown in (3) to inject the electrolytic solution.

That is, the electrolytic solution container 4 containing a certain amount of electrolytic solution is brought into close contact with the opening of the battery case 1 via the valve body 5, and this is mounted on the holder 6. The holder 6 is attached to a rotating arm 8 by a support pin 7 so as to freely rotate, and the arm 8 is rotated by a motor 10 driven by a rotating shaft 9.

When the motor 10 is driven to rotate, the rotary shaft 9 rotates in the direction of arrow A to rotate the arm 8 as well, and the holder 6 is rotated about the support pin 7 by the action of centrifugal force. Shaken in the direction of.
As a result, the electrolytic solution in the electrolytic solution container 4 moves in the direction of arrow C through the valve body 5 and permeates into the pole group 2 in the battery case 1.

Thus, the electrolytic solution was made to permeate into the pole group in the battery case by utilizing the centrifugal force.

[0007]

However, in such a conventional electrolytic solution injecting method, the specific gravity distribution of the electrolytic solution in the electrolytic cell after injection is the centrifugal force direction C of the electrolytic cell 1 shown in FIG. There is a problem that the initial design performance cannot be achieved due to the non-uniformity of the specific gravity distribution because the height becomes higher as it gets closer to the bottom surface and lower as it gets closer to the opening.

Therefore, in order to eliminate the non-uniformity of the specific gravity distribution, conventionally, in battery manufacturing, a cap 11 is attached to the battery case 1 as shown in FIG. The internal specific gravity distribution was stabilized by including the aging step of leaving it, and then the charging step was started.

However, if such an aging process is included in the battery manufacturing process, in the case of mass-produced batteries, a wide space for leaving the device for aging is required, which requires a large amount of equipment and space. There was a problem that there was a lot of waste.

The present invention has been made in view of the above conventional problems, and the specific gravity distribution can be stabilized in a short time immediately after the injection of the electrolytic solution, which shortens the manufacturing time and saves the space. An object of the present invention is to provide a method for stabilizing an electrolytic solution in a battery and a device used therefor which can be achieved.

[0011]

The method for stabilizing an electrolytic solution in a battery according to the present invention is characterized in that, in the manufacturing process of a sealed battery, the electrolytic solution is injected into the battery case after the pole group is inserted by using centrifugal force. After that, attach a lid to this battery case to make it a hermetically sealed state, and then attach this battery container to the rotating pedestal in the centripetal direction opposite to the centrifugal direction at the time of electrolyte injection, and rotate this rotating pedestal. As a result, the centrifugal force in the opposite direction to that at the time of liquid injection is applied to the battery case.

Further, in the apparatus for stabilizing the electrolytic solution in the battery according to the present invention, after the electrolytic solution is injected by using centrifugal force, the battery case in a sealed state is reversed from the centrifugal direction when the electrolytic solution is injected. A rotating pedestal equipped with a battery case fixing jig that is fixed in the centripetal direction of
And a drive device for rotationally driving the rotary base.

[0013]

In the method for stabilizing the electrolytic solution in the battery according to the present invention, the centrifugal force is applied to the battery case mounted on the rotating pedestal in the direction opposite to the centrifugal force at the time of injecting the electrolytic solution to rotate the centrifugal force. The specific gravity distribution of the electrolyte, which had been higher in the centrifugal direction because it was injected by using it, was made uniform by the centrifugal force applied in the opposite direction, and after this stabilization process, it became possible to immediately enter the charging process. The manufacturing time can be shortened.

Further, in the apparatus for stabilizing the electrolytic solution in the battery of the present invention, after the electrolytic solution is injected by using centrifugal force, the sealed battery case is placed in a direction opposite to the centrifugal direction when the electrolytic solution is injected. Since the rotating pedestal is provided with a battery case fixing jig for fixing in the centripetal direction and a drive device for rotationally driving the rotating pedestal, the battery case after injecting the electrolytic solution is applied to this stabilizing device. As a result, the specific gravity distribution of the electrolytic solution can be made uniform.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 show an apparatus for realizing the method for stabilizing an electrolytic solution in a battery according to the present invention, and show an embodiment of the stabilizing apparatus according to the present invention.

First, the battery case 1 injected with centrifugal force in the state shown in FIG. 4 is then sealed by attaching a cap 11 as shown in FIG. Then, the battery case 1 in the hermetically sealed state is put on the stabilizing device for the electrolytic solution in the battery described below.

In the apparatus for stabilizing the electrolytic solution in the battery shown in FIGS. 1 and 2, reference numeral 12 is a rotary disk.
A required number of battery holders 13 are provided at positions spaced apart by the above equal angles. The battery holder 13 supports the battery case 1 with the cap 11 thereof facing outward in the radial direction.

The rotary disk 12 is provided with a rotary shaft 15 which is rotatably supported by a shaft support portion 14. A driven pulley 17 is rotatably mounted on the rotary shaft 15 via a one-way clutch 16. ing. This driven pulley 17 is
The battery holder 1 indexed by the index device 19 is rotatably connected to the drive pulley 20 index-rotated by the index device 19 of the index motor 18 via a transmission means such as a toothed belt 21.
The index rotation operation is performed by each angle according to the number of the three mounted.

A clutch 22 and a brake 23 are provided at the lower end of the rotary shaft 15, and a rotational force is received from a motor 24 via the brake 23 and the clutch 22.

Next, the operation of the apparatus for stabilizing the electrolytic solution in the battery, which is an embodiment of the method for stabilizing the electrolytic solution in the battery according to the present invention, will be described.

As described in the conventional example, the electrolytic solution is injected into the battery case 1 by using the centrifugal force, and the cap 1 is inserted as shown in FIG.
A suitable number of battery cases 1 sealed in 1 are put on a turntable 12
Attach to the upper battery holder 13 at equal intervals. At this time, the cap 11 of the battery case 1 is attached so as to come to the outside in the radial direction.

When the battery case 1 is attached, the index motor 19 is rotated to set the index device 19 so that the drive pulley 20 rotates by the angle determined according to the number of attachments. As a result, the drive pulley 20 is rotated by the angle set in the index device 19 by the rotation of the index motor 18, and the driven pulley 17 is also index-rotated by this, and the rotational force is transmitted to the rotary shaft 15 via the one-way clutch 16. It is transmitted, and the turntable 12 is index-rotated.

Therefore, the first battery case 1 is attached to one battery holder 13. Then, by rotating the index motor 18, when the next battery holder 13 rotates to the attachment position and stops, the next battery case 1 is attached, and thus a predetermined number of battery containers 1 are sequentially mounted on the turntable 12. The battery holders 13 are attached to the battery holder 13 at positions equiangularly separated from each other.

When the mounting of the predetermined number of battery cases 1 is completed,
Next, the motor 24 is driven to rotationally drive the rotary shaft 15 via the clutch 22 to rotate the turntable 12.

At this time, the driven pulley 17 is kept stopped by the one-way clutch 16.

In this way, when the turntable 12 is driven to rotate, the electrolytic solution in each battery case 1 receives a centrifugal force in the opposite direction to the centrifugal injection, that is, the arrow shown in FIG. The specific gravity distribution is uniformized by receiving the centrifugal force in the direction opposite to C.

Thus, after the rotation for a predetermined time, the clutch 2
2 and the brake 23, the turntable 12 is stopped in phase so that one of the battery holders 13 is just stopped at the take-out position, and the index motor 1 is turned on again.
8 and the index device 19 rotate the turntable 12 by an equal angle to index each battery case 1 to the take-out position and take it out from the battery holder 13.
I will pass it to the next charging process.

In parallel with the removal of the battery case 1, if the new battery case 1 in which the electrolyte has been injected is sequentially attached to the battery holder 13, the stabilizing device can be operated efficiently. You can

In the above embodiment, the number of rotations and the rotation time for rotating the turntable for stabilizing the electrolytic solution vary depending on the size of the battery case, the amount of electrolytic solution, the specific gravity, the structure of the pole group, and the like. Therefore, it cannot be unambiguously decided, but it is decided experimentally.

Further, the method for stabilizing the electrolytic solution in the battery of the present invention is not limited to the method using the stabilizing device of the above-mentioned embodiment, and after the electrolytic solution is injected, the centrifugal force opposite to the centrifugal force when the electrolytic solution is injected is applied. It can be widely used as long as it is a device that can apply the centrifugal force of No. 1 to a battery case.

[0032]

As described above, according to the method for stabilizing the electrolytic solution in the battery of the present invention, after the electrolytic solution is injected into the battery case by using the centrifugal force, the centrifugal force opposite to the centrifugal force is applied. Since it is placed in a battery case, the specific gravity distribution of the electrolyte solution can be made uniform more quickly than in the case where the specific gravity distribution of the electrolyte solution is made uniform by leaving it in the aging process as in the conventional case. The manufacturing time can be shortened and the space for aging can be saved.

Further, according to the stabilizing device for the electrolytic solution in the battery of the present invention, after the electrolytic solution is injected into the battery case by using the centrifugal force, the centrifugal force opposite to the centrifugal force is applied to the battery case. The specific gravity of the electrolytic solution in the battery can be made uniform in a short time.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a stabilizing device for an electrolytic solution in a battery according to the present invention.

FIG. 2 is a sectional view of the above embodiment.

FIG. 3 is a front view of a generally used electrolytic solution centrifugal injection device.

FIG. 4 is a cross-sectional view of a general electrolytic solution pouring cell.

FIG. 5 is a cross-sectional view of a general electrolyte solution injection battery.

[Explanation of symbols]

 1 Battery Case 2 Pole Group 11 Cap 12 Rotating Disk 13 Battery Holder 14 Shaft Support 15 Rotating Shaft 16 One-way Clutch 17 Driven Pulley 18 Index Motor 19 Index Device 20 Drive Pulley 21 Toothed Belt 22 Clutch 23 Brake 24 Motor

Claims (2)

[Claims] 1. In the process of manufacturing a sealed battery, an electrolytic solution is injected into the battery case after inserting the pole group by using a centrifugal force, and then a lid is attached to the battery case to make a sealed state. , This centrifuge is installed on the rotating pedestal in the centripetal direction opposite to the centrifugal direction at the time of electrolyte injection, and by rotating this rotating pedestal, centrifugal force in the opposite direction to that at the time of liquid injection is applied to the electrolytic basin A method for stabilizing an electrolytic solution in a battery, comprising: 2. A rotary pedestal having a battery case fixing jig for fixing the closed battery case in a centripetal direction opposite to the centrifugal direction at the time of injecting an electrolyte, and a drive device for rotationally driving the rotary pedestal. A device for stabilizing an electrolytic solution in a battery, comprising: