JPH049739Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a storage battery electrolyte supply device for injecting electrolyte into a storage battery consisting of a plurality of cells.

(Prior art) In ready-to-use storage batteries, which are equipped with charged plates and can be used immediately by simply injecting electrolyte into the storage battery when used without electrolyte, a predetermined amount of electrolyte is added to each cell. need to be injected. Nowadays, in order to prevent excessive or insufficient amount of liquid injected into each cell,
For example, an electrolyte container has been proposed in which the same number of cells as the number of cells are connected to each other, and each body is filled with electrolyte for each cell.
No. 74343).

However, in the past, the structure was such that electrolyte was poured by inserting the injection tube of the electrolyte container into the injection port of each cell chamber, so the tip of the injection tube had to be cut with scissors or nippers to open it. It takes a lot of time and effort. Furthermore, there is a risk that the cut portion will be scattered during cutting with scissors or nippers. Furthermore, in order to inject the electrolyte, it is necessary to unseal the tip of the liquid injection cylinder and then punch an air hole in the bottom of each body part with a pin or the like, which is even more time-consuming.

(Purpose of the invention) The purpose of the invention is to make it possible to reliably inject electrolyte without using a nipper or making an air hole in the electrolyte container, and to improve the gas-liquid displacement performance during injection. It is to aim for.

(Means for Achieving the Object) In order to achieve the above object, the present invention connects the same number of body parts as the number of cells, in which the electrolyte of each cell unit of the storage battery is sealed, and An electrolytic solution for a storage battery that consists of an electrolyte container having a liquid injection tube and a liquid injection part of a lid that forms the upper part of the storage battery, and in which the intervals between the liquid injection cylinders of the electrolyte container are made to match the intervals between the liquid injection parts of the lid. In the liquid supply device, a thin film part is formed at the tip of the liquid injection barrel, each body part is sealed by the thin film part, and a liquid injection port is provided at the bottom of each liquid injection part of the lid, respectively communicating with the cell. In addition to the above-mentioned liquid injection port, an air window is formed in the peripheral wall of the liquid injection part to communicate the inside of the liquid injection part and the cell chamber. An upwardly protruding liquid injection sleeve that can be freely fitted into the liquid injection sleeve is formed, an upper end surface of the liquid injection sleeve is formed as an inclined surface, a notch part for forming a cutting edge is formed at the distal end of the liquid injection sleeve, and An air groove is formed at a location offset in the circumferential direction from the most distal end, and a rib projecting outward in the radial direction is formed on the outer peripheral surface of the sleeve corresponding to the lower end portion of the air groove.

(Function) When the liquid injection tube of the electrolyte container is fitted into the liquid injection sleeve of the storage battery, the thin film portion is torn by the leading edge of the sleeve, which has a notch for forming a cutting edge.

During pouring, air is sent into the container through the air groove, and the electrolyte and air are smoothly replaced.

Since the air groove is formed at a position offset from the most extreme end of the sleeve, when a force is first created to break the thin film part, fragments of the thin film part are less likely to enter the air groove. In addition, when the injection tube is completely fitted into the sleeve, even if the cut end of the torn thin film part enters the air groove, the lower half of the air groove will become deeper because it forms a rib. so the air grooves will not get clogged.

(Example) FIG. 6 shows a state in which electrolyte is injected from an electrolyte container into a storage battery to which the present invention is applied, and the storage battery 10 is equipped with a monoblock battery case 13 and an upper battery case lid 14. The inside of the battery case 13 is divided into, for example, six cell chambers 12 by a partition wall 15, and a pole group made of an electrode plate, a separator, etc. is inserted into each cell chamber 12.

In FIG. 5 showing the electrolytic solution container 1, the electrolytic solution container 1 is made of polyolefin-based synthetic resin and has six substantially rectangular parallelepiped body portions 2. As shown in FIG. Each body part 2
are integrally connected to each other, and a cylindrical liquid injection tube 3 is integrally formed at the distal end portion (upper end portion in FIG. 5) of each body portion 2. The insides of all the body parts 2 are isolated cavities for each body part 2, and each body part 2 stores an electrolytic solution 5 for each cell of the storage battery. In addition, the electrolytic solution 5 is initially sealed in the body part 2, but due to vibrations during transportation, a portion 5a of the electrolytic solution 5 enters the injection tube 3, and remains as it is due to surface tension. In many cases, it is kept within 3. At the tip of each liquid injection tube 3, a thin film part (tape-shaped heat sealing part) 6 made of aluminum foil or synthetic resin whose back surface is coated with synthetic resin is provided. The upper end of 3 is sealed. The interval D between adjacent liquid injection tubes 3 corresponds to the interval between the concave liquid injection parts 17 formed for each cell of the storage battery shown in FIG. It can be inserted into the liquid injection part 17.

Each liquid injection part 17 is provided on the lid 14 of the storage battery, and an upwardly protruding liquid injection sleeve 1 is provided at the center bottom of the lid 14
9, and the sleeve 19 is integrally formed with the lid 14 via a plurality of radial connecting portions 27, as shown in FIG.

In FIG. 1 showing the II cross section of FIG. 3, a cylindrical projection 21 extending downward is integrally formed at the lower end of the liquid injection sleeve 19.
9 and the cylindrical protrusion 21 contain the lower cell chamber 1.
A liquid injection port 18 communicating with 2 is formed. The diameter of the liquid injection port 18 is such that, for example, the inner diameter of the lower portion is reduced in order to adjust the injection speed. The injection speed is preferably 0.5 to 2.0 cc/sec because if it is too fast, the electrolyte may overflow from the battery or the desired battery performance may not be achieved. An air window 23 is formed between the connecting parts 27, and the air window 23 communicates between the cell chamber 12 and the inside of the liquid injection part 17.

Also, on the top surface of the lid 14 before the electrolyte is injected, there is an aluminum foil 2 coated with synthetic resin on the lid 14 side.
4 is fixed, and the liquid injection part 17 is sealed with aluminum foil 24, thereby preventing the charged electrode plate in the cell chamber 12 from coming into contact with the outside air.

The upper end of the liquid injection sleeve 19 is cut diagonally to form an inclined surface, and a notch 22 for forming a cutting edge is formed at the tip end thereof.
The edge of the electrolyte container 1 forms a sharp cutting edge like a saw blade, thereby creating a tight spot for breaking the thin film portion 6 of the electrolyte container 1.

An air groove 20 extending in the vertical direction is formed on the outer circumferential surface of the liquid injection sleeve 19 at a position offset in the circumferential direction from the most distal end where the notch 22 is located. It spans the entire length of the direction. The air groove 20 is located between the connecting parts 27.

Furthermore, an air groove 20 is provided on the outer peripheral surface of the sleeve 20.
As shown in FIG. 3, a rib 26 that extends roundly outward in the radial direction is integrally formed at a portion corresponding to the lower end portion of. Therefore, the lower half of the air groove 20 passing through the rib 26 is deeper as shown in FIG.

Next, how to use it will be explained. In order to start using the storage battery, it is necessary to inject electrolyte into the storage battery. First, the aluminum foil 24 shown in FIG. 4 is peeled off from the lid 14 to expose the liquid injection part 17.

Next, as shown in FIG. 1, the electrolyte container 1 is turned upside down, and each liquid injection cylinder 3 is inserted into each liquid injection part 17, and by fitting to the outer periphery of the liquid injection sleeve 19, a cutout part 22 is formed. A force is made to break the thin film part 6 at the most distal end, and then the entire thin film part 6 is broken with a liquid injection sleeve 19 as shown in FIG.
Fit the liquid injection cylinder 3 into the holder. When the thin film part 6 is torn, by providing the notch part 22 at the most extreme part, the thin film part 6 can be easily torn by the edge of the notch part 22 by simply pushing the container 1 lightly. That is, the breaking strength can be reduced. Furthermore, notch part 2
2, the fragments at the cut end of the torn thin film portion 6 become circular, making it difficult for them to enter the air groove 20.

In addition, when the liquid injection tube 3 is fitted into the liquid injection sleeve 19 as shown in FIG. 2, even if fragments from the cut end of the torn thin film portion 6 try to enter the air groove 20, the fragments will be blocked by the overhang of the ribs 26. is pushed to one side to prevent its intrusion, and even if fragments of the thin film portion 6 enter the air groove 20, the rib 26
Since the depth of the air groove 20 in the part is deeper,
The air groove 20 will not be clogged.

In the above-mentioned fitted state, injection of the electrolytic solution 5 from the electrolytic solution container 1 into each cell chamber 12 is started. That is, the electrolytic solution 5 in the electrolytic solution container 1 is replaced by air flowing into the container 1 from the air groove 20, and the electrolytic solution 5 in the electrolytic solution container 1 is replaced by air flowing into the container 1 from the air groove 20.
Supplied within 2 days. Therefore, the electrolytic solution can be smoothly supplied without creating an air hole in the bottom of the electrolytic solution container 1 as in the conventional case. Furthermore, the air within the cell chamber 12 is exhausted from the air window 23.

When the liquid injection is completed, the container 1 is removed from the liquid injection part 17, and a sealing plug (not shown) is fitted into the liquid injection part 17. As the sealing plug, for example, one in which a number of plug bodies corresponding to the number of liquid injection parts 17 (six in this case) are connected together via a flexible part is used.

(Effects of the invention) As explained above, according to the invention: (1) A thin film portion 6 is provided at the tip of each injection tube 3 of the electrolyte container 1.
, and an upwardly projecting liquid injection sleeve 19 is formed at the liquid injection port of each cell, so that the liquid injection cylinder 3 of the electrolyte container 1 can be inserted into the liquid injection sleeve 1 from above.
9, the liquid injection sleeve 19 can tear the thin film part 6 and open the seal, and the liquid injection tube 3 can be connected to the liquid injection sleeve 19, and in this state, the liquid injection operation can be started immediately.

Furthermore, cutting tools such as scissors and nippers are no longer required, making the liquid injection work easier and eliminating the scattering of the cut portion when cutting with scissors or nippers.

(2) An air groove 20 is formed on the outer peripheral surface of the liquid injection sleeve 19, and the air groove 20 replaces the electrolyte in the electrolyte container 1 with air. There is no need to make an air hole at the bottom of the container, making the injection process even easier.

(3) Since the notch 22 for forming a cutting edge is formed at the leading edge of the sleeve 19, the thin film part 6 can be easily removed by simply pressing the container 1 lightly and lightly pressing the thin film part 6 against the leading edge of the sleeve. It can be broken. That is, the breaking strength can be reduced.
Furthermore, by providing the notch 22,
Since the cut end of the torn thin film portion 6 has a circular shape, it becomes difficult for the fragment to enter the air groove 20.

(4) Since the air groove 20 is formed at a position offset from the leading edge in the circumferential direction, when a force is first created to break the thin film part 6, fragments of the thin film part 6 will not enter the air groove 20. The air groove 20 is not easily clogged.

(5) Since the rib 26 is formed at the lower end of the air groove 20 to increase the depth of the lower half of the air groove 20, when the liquid injection tube 3 is completely fitted into the sleeve 19, Even if fragments from the cut end of the torn thin film portion 6 try to enter the air groove 20, the overhanging ribs 26 push the fragments to one side and prevent the fragments from entering, and furthermore, the fragments of the thin film portion 6 enter the air groove 20. Even if this happens, the air groove 20 will not become clogged because the air groove 20 is deep at the rib 26 portion.

That is, good gas-liquid replacement performance can be maintained during liquid injection.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of an electrolyte supply device to which the present invention is applied (cross-sectional view taken along line II in Fig. 3), and Fig. 2 is a diagram showing a state in which the liquid injection tube is connected to the liquid injection sleeve. A vertical sectional view of the same part, Figure 3 is a top view of the liquid injection part,
FIG. 4 is a partial cross-sectional view of FIG. 3, FIG. 5 is a vertical cross-sectional view of the electrolyte container, and FIG. 6 is a front view of the storage battery showing the state of liquid injection. 1... Electrolyte container for storage battery, 5... Electrolyte, 10... Storage battery, 12...
Cell chamber, 17...Liquid injection part, 18...Liquid injection port, 19
... Liquid injection sleeve, 20 ... Air groove, 22 ... Notch, 26 ... Rib.

Claims (1)

[Scope of utility model registration request] An electrolyte container that connects the same number of body parts as the number of cells filled with electrolyte for each cell of the storage battery, and has a liquid injection tube for each body part, and a lid that forms the upper part of the storage battery. In the electrolyte supply device for a storage battery, which is made of Each body part is sealed by a thin film part, and the bottom of each liquid injection part of the lid is provided with a liquid injection port that communicates with each cell, and the peripheral wall of the liquid injection part is provided with a hole inside the liquid injection part separately from the liquid injection port. and an air window communicating with the inside of the cell chamber, and each liquid injection port has an upwardly protruding liquid injection sleeve that can be freely fitted to the inner periphery of the liquid injection tube of the electrolyte container. The upper end surface is formed into an inclined surface, a notch for forming a cutting blade is formed at the most extreme end of the liquid injection sleeve, and an air groove is formed at a location offset in the circumferential direction from the aforementioned most extreme end to allow air to flow through the sleeve. An electrolyte supply device for a storage battery, characterized in that a rib extending radially outward is formed on the outer circumferential surface of the sleeve corresponding to the lower end portion of the groove.