CN1195203A

CN1195203A - Electrolyte injection system

Info

Publication number: CN1195203A
Application number: CN97109387A
Authority: CN
Inventors: 洪懿善
Original assignee: Samsung Electron Devices Co Ltd
Current assignee: Samsung SDI Co Ltd
Priority date: 1997-03-31
Filing date: 1997-12-29
Publication date: 1998-10-07
Anticipated expiration: 2017-12-29
Also published as: KR19980075541A; CN1094259C

Abstract

Disclosed is an electrolyte injection system, a device is formed in the head part, the anode plates of a secondary battery and the top surface of the curling edge part can be prevented from being soaked by the electrolyte by injecting the electrolyte into an electrode assembly directly through an injection port during the electrolyte injection process.

Description

Electrolyte injection system

The present invention relates to a kind of electrolyte injection system that is used for secondary cell, particularly a kind of electrolyte that can prevent in the electrolyte injection technology is injected into the electrolyte injection system on anode strip and the crimping position.

The battery that has two kinds of citation forms, i.e. charging and the primary cell that after consuming its electric charge, discharges and can charge once more with the secondary cell of continuous use in process for making by the user.These two kinds of batteries can be cylindrical, square and rectangle.

Secondary cell generally includes: have the electrode assemblie of positive plate and minus plate and be folded in therebetween dividing plate, the shade assembly that is connected with the positive plate of electrode assemblie, electrode assemblie inserts in it and the shell that is connected with minus plate, be inserted in the sealing gasket that makes its insulation and sealing between shade assembly and the shell, be used as the insulator between shell and the electrode assemblie and the dead ring of the insulator between electrode assemblie and the shade assembly.

In this secondary cell, before shade assembly is packed shell into, in the electrode assemblie that inserts shell, form vacuum, use the electrolyte injector electrolyte injecting electrode assembly.

There is following shortcoming in traditional secondary battery by above-mentioned formation, and when electrolyte injecting electrode assembly, electrolyte is infected with at anode strip and crimping position, because electrolyte makes on the crimping position salt marsh is arranged, so be difficult to shade assembly can closely.And be difficult to make anode strip to engage with shade assembly.As a result, need be from the additional process of anode strip and crimping position removal electrolyte.And even after this electrolyte is removed operation, the salt marsh in the electrolyte also can be stayed on anode strip and the crimping position, causes secondary cell to get rusty.

Produced the present invention in order to address the above problem, the object of the present invention is to provide a kind of electrolyte injection system, it is in injecting the electrolyte into the electrode assemblie of secondary cell the time, can prevent that electrolyte is injected on anode strip and the crimping position, so that because the electrolyte that does not need to clean anode strip and crimping position is removed operation, thereby injection efficiency is improved, simplified manufacturing process.

To achieve these goals, the invention provides a kind of electrolyte injection system, comprise the pedestal that battery is installed and have the head part of the coupler of extension, so that when head part is installed on the pedestal, electrolyte directly is injected in the electrode assemblie of secondary cell.This electrolyte injection system is by pressing down anode strip and crimping position after electrode assemblie is vacuumized, electrolyte is injected the electrode assemblie of secondary cell, and by from the beginning the part in coupler the direct injecting electrode assembly of electrolyte, thereby prevent that in electrolyte injection technology process electrolyte is injected on anode strip and the crimping position.

Can understand the present invention all sidedly by following specifying with accompanying drawing of providing, but this only being exemplary, is not limitation of the present invention therefore.

Fig. 1 is illustrated under the preceding state of electrolyte injecting electrode assembly the electrolyte injection system according to a preferred embodiment of the invention and the profile of secondary cell;

Fig. 2 is under the state when being illustrated in electrolyte injecting electrode assembly, the electrolyte injection system shown in Figure 1 and the profile of secondary cell.

Below will specify the preferred embodiments of the present invention, its example is showed in accompanying drawing.Anywhere, identical reference number will be used for identical parts in whole specification.

Referring to Fig. 1 and 2, showed the secondary cell 1 of the electrolyte injection system that places the preferred embodiments of the present invention.Crimping position 3 is formed at the top of the shell 2 of secondary cell 1, and the positive plate that inserts the electrode assemblie (not shown) of shell 2 is connected with anode strip 5.

The electrolyte injector 7 of the preferred embodiments of the present invention is used for injecting electrolyte to electrode assemblie.Electrolyte injector 7 comprises the pedestal 11 with the arranging batteries position 9 that is used to keep battery 1 and is arranged at head part 15 on the pedestal 11 that the head part 15 that forms coupler 13 is used for injecting electrolyte to electrode assemblie.

Endless member 17 can be installed in top at pedestal 11, and when head part 15 dropped on the pedestal, the bottom of head part 15 was in contact with it (see figure 2).

In head part 15, be provided with a kind of device, be used for to prevent that passing through coupler 13 when electrode assemblie injects electrolyte electrolyte is injected on the anode strip 5 and crimping position 3 of secondary cell 1.

Said apparatus comprises: form the bias voltage part 19 of the certain angle that is inclined upwardly, promptly become big towards its top, when head part 15 drops to pedestal 11 anode strip 5 is pushed to a side; With with certain size towards the outstanding downwards cylinders 21 that form of pedestal 11, when injecting electrolyte, it is positioned at the upper surface (Fig. 2) at crimping position 3.

Circle ring part 23 is installed in the basal surface of cylinder 21, closely contacts with the upper surface at crimping position 3, as shown in Figure 2.

Sidewall by cylinder 21 forms hole 25, so that in the space 10 between the outer surface of head part 15 and cylinder 21, forms vacuum with the inside of shell 2.

In pressing the electrolyte injection system of above-mentioned formation, in the time need injecting electrolyte to the electrode assemblie of secondary cell 1, the head part 15 of electrolyte injector 7 drops on the pedestal 11, and the shell 2 that forms secondary cell 1 is arranged in the state of battery installation section position 9.

As shown in Figure 2, when head part dropped on the pedestal 11, the basal surface of circle ring part 23 and head part 15 closely contacted with the upper surface at crimping position 3 and the endless member 17 of pedestal 11 respectively.

Under this state, the anode strip 5 of secondary cell 1 is positioned at the outer surface of contiguous bias voltage part 19.By this location, in electrode, form vacuum, inject electrolyte by coupler 13 to electrode.This device that is used to prevent that secondary cell from being soaked by electrolyte is positioned at the upper end of electrode assemblie when closely contacting with the anode strip bottom, under this state, and electrode assemblie and being evacuated on every side.When electrolyte offered coupler, electrolyte was from coupler injecting electrode assembly.

With this device that prevents that secondary cell from being soaked by electrolyte, can under the situation of not soaked on anode strip and the crimping position, inject electrolyte by electrolyte.As the result of said structure, utilize bias voltage part 19, cylinder 21 and circle ring part 23, can under the situation of not polluting anode strip 5 and crimping position 3, inject electrolyte to secondary cell 1.

Although the present invention has been described in conjunction with the most practical situation and preferred embodiment, should understand that the present invention is not limited to described embodiment, phase reaction covers marrow and interior various improvement and the equivalent of scope that is included in claim.

Claims

1. an electrolyte injection system is characterized in that it comprises: the pedestal that battery is installed; Head part with coupler of extension is so that head part when being installed on the pedestal, can prevent that electrolyte is injected under the anode strip and the situation on the crimping position of battery, directly is injected into electrolyte in the electrode assemblie of secondary cell.

2. electrolyte injection system according to claim 1 is characterized in that, forms the bias voltage part around described coupler, and it is inclined upwardly to top from the bottom of coupler at a certain angle, so that the anode strip of battery is pushed to a side direction.

3. electrolyte injection system according to claim 2 is characterized in that, described bias voltage partly is a cone shape.

4. electrolyte injection system according to claim 1 is characterized in that also comprising the cylinder that forms around described coupler, and it is outstanding downwards from described head part, and when head part was placed on the pedestal, it was positioned on the crimping position of battery.

5. electrolyte injection system according to claim 4 is characterized in that also comprising the circle ring part that is installed on the described cylinder bottom, and its upper surface with described crimping position closely contacts.

6. electrolyte injection system according to claim 3 is characterized in that, the sidewall formation hole by described cylinder is used for producing vacuum in head part.