JPH08124555A - Funnel device - Google Patents

Abstract

PURPOSE: To provide a funnel device simplifying a structure, reducing a cost, further lightening weight, and facilitating maintenance. CONSTITUTION: This is a funnel device, for pouring a liquid by placing an opening part 40 upward, of a vessel 23 having the opening part 40. The device comprises a funnel part 20 connected to the opening part 40 for pouring the liquid and a seal member 60 provided on the tip side of the funnel part 20 for sealing the space between the funnel part 20 and an internal peripheral surface 77 of the vessel 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a funnel device suitable for injecting an electrolytic solution into a battery container, for example.

[0002]

2. Description of the Related Art In recent years, there has been a movement toward practical use of lithium ion secondary batteries. A lithium ion secondary battery uses a non-aqueous electrolytic solution in which a carbonaceous material capable of doping and de-doping lithium is used as a negative electrode, a composite oxide of lithium and a transition metal is used as a positive electrode, and an electrolyte is added to a non-aqueous solvent. Non-aqueous electrolyte secondary battery.

The lithium-ion secondary battery is a rechargeable battery, and is a next-generation battery that can replace the conventional nickel-cadmium battery as a battery that can prolong the driving time of a portable personal computer or can reduce the weight if the driving time is the same. Seen as a strong candidate. For example, in the case of the same volume, new products are being released one after another with a driving time that is approximately 1.6 times longer than that of a conventional nickel-cadmium battery. further,
Improving the positive electrode, negative electrode, and electrolyte that make up the battery,
By efficiently generating energy, the driving time is expected to double in 1995. Also,
Compared to nickel-cadmium batteries, the weight of the battery is
It is about 20% lighter when the driving time is 1.6 times, and is almost the same when the driving time is twice.

On the other hand, in the conventional manufacturing process of a lithium ion secondary battery or the like, in order to inject the electrolytic solution into the battery container,
In the case of a product whose impregnation time is extremely slow, the method of injecting the electrolytic solution in several times was adopted. Further, in the manufacturing process of the capacitor, after the element is directly immersed in the electrolytic solution in a vacuum state, the vacuum is released and the electrolytic solution is injected into the can.

However, in the manufacturing process of the above-mentioned conventional lithium ion secondary battery or the like, in the case of a product in which the impregnation time is extremely slow to inject the electrolytic solution into the battery container, the electrolytic solution is divided into several times. Depending on the method of injecting or in the manufacturing process of the capacitor, such as immersing the element directly in the electrolytic solution in a vacuum state, then releasing the vacuum and injecting the electrolytic solution into the can, There was a problem that the precision fell and the cost of the manufacturing machine became very high.

[0006] Therefore, the applicant of the present invention has disclosed in Japanese Patent Laid-Open No. 6-1246
In Japanese Patent Publication No. 99, the electrolytic solution is set to 1 regardless of the injection amount.
We propose a funnel device that can be injected in a single operation. As shown in FIGS. 4 and 5, this funnel device 7 of the prior art is configured such that a cylindrical container 6 having a narrowed portion 6b in the vicinity of an opening 6a is provided with a liquid from the opening 6a with the opening 6a facing upward. It is a funnel device for pouring (electrolyte). The funnel device 7 includes a funnel portion 2 that serves as a liquid injection guide by being pressed against the opening 6a of the cylindrical container 6 from the inside via a seal member 11 arranged at the tip, and the constriction of the cylindrical container 6. Part 6
Clamping means for clamping and non-clamping the vertical movement of the cylindrical container 6 by pressing b from the outside, and a pressure contacting means for applying pressure to press the tip of the funnel portion 2 against the opening 6a of the cylindrical container 6. Is provided with a funnel support.

The clamping means has a plurality of rod-shaped bodies 9 lying in a plane perpendicular to the central axis of the funnel device 7, and the side surfaces of the rod-shaped bodies 9 are engaged with the narrowed portion 6b of the cylindrical container 6 during clamping. The engagement is released when not clamped. The funnel support part has a slide mechanism 3 that inscribes the funnel part 2 and slides up and down, and a spring 10 for applying a pressure to press the funnel part 2 into the opening 6 a of the cylindrical container 6.

[0008]

However, as shown in FIG. 4 and FIG.
The conventional funnel device shown in (1) has the following problems. As described above, since the seal member 11 is pressed against the narrowed portion 6b of the cylindrical container 6 and the lock rod 9 is pressed to obtain a seal, the structure is very complicated. It is expensive and poor in maintainability. Since the cylindrical container 6 receives the reaction force of the locking rod-shaped body 9, a mechanism for fixing the funnel portion 2 and the cylindrical container 6 such as the locking spring holder 4 is required. Furthermore, when attaching and detaching the funnel unit 2, it is necessary to perform a lock and unlock operation. As described above, the conventional funnel device has a problem that it has an extremely large number of parts, is expensive, and has poor maintainability.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a funnel device having a simple structure, a low cost, a light weight, and easy maintenance.

[0010]

According to the present invention, there is provided a funnel device for pouring a liquid with an opening facing up, for a container having an opening, the object being connected to the opening. Funnel device including a funnel portion for pouring the liquid, and a seal member provided on the tip end side of the funnel portion for sealing between the funnel portion and the inner peripheral surface of the container. Is achieved by In the present invention, the container is preferably a cylindrical container. This container is preferably a battery container. In the present invention, the funnel portion is preferably held in the container via a seal.

[0011]

According to the above construction, the funnel portion is connected to the opening of the container, and the seal member seals the funnel portion and the inner peripheral surface of the container. Then, the liquid in the funnel portion is poured into the container once through the opening. At this time, the funnel portion is preferably held in the container by a seal.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The examples described below are
Since it is a preferred specific example of the present invention, various technically preferable limitations are attached, but the scope of the present invention is, unless otherwise stated to limit the present invention, in the following description.
It is not limited to these modes.

FIG. 1 shows a state in which the funnel device 20 of the present invention is mounted on a cylindrical container 23 (hereinafter referred to as a work). The container 23 is a cylindrical container and is detachably attached to the transport jig 24. The work 23 is a battery container in this embodiment, and an electrolytic solution is injected into the work 23. Figure 3 shows this work 2
3 and the sheet winding 26 inserted into the work 23. The sheet winding 26 is a sheet coated with an active material, and is wound in a columnar shape. And this sheet winding 26
Are secured by tape 27.

The work 6 shown in FIGS. 1 and 3 is also referred to as a cylindrical electrode housing, and the narrowed portion 30 is formed over the entire circumferential direction. FIG. 2 shows a part A in FIG. 1 in an enlarged manner. In FIG. 2, the narrowed portion 30 is preferably a recess having a semicircular cross section. The work piece 23 has an opening 40 and a bottom 42, as particularly shown in FIGS. 1 and 3. The opening portion 40 is a portion that is opened in the diametrical direction in the vicinity of the narrowed portion 30 described above.

Next, the funnel portion 20 to be attached to the opening 40 of the work 23 will be described. This funnel portion 20 is also called a jogo, and the electrolytic solution is a work 23.
It acts as a so-called funnel that holds the electrolyte until the injection is complete. In the process of injecting the electrolytic solution, it also plays a role of generating a pressure for injecting the electrolytic solution once by utilizing the head difference of the electrolytic solution. As shown in FIG. 1, the funnel portion 20 has a flange portion 50 formed at one end thereof. A concave portion 53 is formed at the other end of the funnel portion 20 as particularly shown in FIG.
The recess 53 is formed over the entire circumference on the outer side of the tapered portion 55 of the funnel portion 20. Outer diameter D of this tapered portion 55
Is slightly smaller than the inner diameter L of the opening 40 of the work 23.

A seal member 60 is placed in the recess 53 by being fitted therein. The sealing member 60 is also called packing, and preferably has a circular cross section. The seal member 60 is a so-called O-ring. The seal member 60 can be made of an elastic material such as rubber or plastic.

The seal member 60 can elastically deform to seal between the taper portion 55 of the funnel portion 20 and the inner peripheral surface of the work 23. Moreover, the seal member 60 can hold the taper portion 55 of the funnel portion 20 against the inner peripheral surface of the work 23 by a frictional force. Thereby, when the electrolytic solution is injected into the work 23 at one time using the funnel portion 20, there is no fear that the funnel portion 20 will come off from the work 23. When the taper portion 55 of the funnel portion 20 is fitted and held on the inner peripheral surface 77 of the work 23, it is desirable to guide and fit the two parallel linear guides 80 and 82 shown in FIG. 1, for example. Thus, the operation of attaching and detaching the funnel portion 20 to and from the inner peripheral surface 77 near the opening 40 of the work 23 can be performed accurately and with one touch.

Further, since the seal member 60 tightly adheres and seals between the taper portion 55 of the funnel portion 20 and the inner peripheral surface 77 of the work 23, the electrolytic solution is supplied to the inside of the work 23 through the funnel portion 20. The electrolyte solution does not leak from between the taper portion 55 and the inner peripheral surface 77 of the work 23 when it is injected into. As a method of injecting the electrolytic solution into the container, in FIG. 1, a certain amount of the electrolytic solution is filled in the funnel portion 20, and the head difference of the electrolytic solution is used to inject into the work 23.

As a method of injecting the electrolytic solution, in addition to the method described above, it is possible to put the electrolytic solution in the funnel portion 20 and then to make a vacuum. Of course, it is also possible to fill the funnel portion 20 with the electrolyte solution and then inject it after the vacuum state.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the seal member 60 also called packing has a circular cross section. However, not limited to this, the cross section is Y-shaped or the cross section is U.
Of course, it is also possible to use a mold or other shaped seal member.

Although the work 23 is a cylindrical container in the embodiment, the work 23 is not limited to this, but may have a polygonal shape such as a quadrangle, a pentagon, a triangle or the like in cross section or other shapes. I do not care. In that case, the seal member 6
By making the shape of 0 in conformity with the shape of the inner peripheral surface of the work 23, the sealing property between the funnel portion 20 and the inner peripheral surface of the work 23 is secured, and the funnel portion 20 is attached to the work 23. It can be firmly fitted and fixed.

[0022]

As described above, according to the present invention, the structure is simple, the cost is low, the weight is light, and the maintenance is easy.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a funnel device of the present invention is attached to a container.

FIG. 2 is an enlarged view showing a portion A of FIG.

FIG. 3 is a perspective view showing an example of the container of FIG. 1 and one inserted therein.

FIG. 4 is a view showing a conventional funnel device and a container.

5 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 20 Funnel 23 Container (Work) 24 Conveying Jig 30 Squeezing Part 40 Opening 60 Seal Member 77 Inner Surface of Container

Claims (4)

[Claims] 1. A funnel device for pouring a liquid with an opening facing upwards with respect to a container having an opening, a funnel part for pouring the liquid by connecting to the opening, and the funnel part. A sealing member provided on the tip side of the sealing member for sealing between the funnel portion and the inner peripheral surface of the container,
A funnel device comprising: 2. The funnel device according to claim 1, wherein the container is a cylindrical container. 3. The container is a battery container.
The funnel device described in. 4. The funnel device according to claim 1, wherein the funnel portion is held by the container via the seal.