CN201307607Y

CN201307607Y - Sealing ring of alkaline button type battery

Info

Publication number: CN201307607Y
Application number: CNU2008202030158U
Authority: CN
Inventors: 许志建; 周华军
Original assignee: FOSHAN NANHAI SUNKING BATTERY MATERIALS Co Ltd
Current assignee: FOSHAN NANHAI SUNKING BATTERY MATERIALS Co Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-09-09
Anticipated expiration: 2018-11-07

Abstract

The utility model relates to the technical field of a battery, in particular to a sealing ring of an alkaline button type battery. The sealing ring comprises a sealing ring main body, the end at the bottom part of the sealing ring main body is extended upwards to form a convex ring, and a groove is formed by the inner side wall of the convex ring and the inner side wall as well as the inner bottom wall of the sealing ring main body. The groove is inosculated with the bottom part of a cathode cover. Compared with the traditional sealing ring, the sealing ring of the alkaline button type battery has good operability, avoids the leakage of electrolyte fluid between the cathode cover and the sealing ring after assembling, and has a fairly ideal effect to the sealing property of the battery.

Description

A kind of alkaline button cell sealing ring

Technical field:

The utility model relates to the battery technology field, is meant a kind of sealing ring of alkaline button cell especially.

Background technology:

The alkaline button cell sealing ring need play the effect of isolating negative pole cover and anode cover, the more important thing is to seal and prevent the effect of battery drain.In recent years, because the market demand of alkaline button cell constantly enlarges, alkaline button cell manufacturer comes up like the mushrooms after rain.But because the particularity of alkaline button cell structure, really can stop the producer such as the phoenix feathers and unicorn horns of battery drain fully, the saying of " no leakage the person get the world " was once arranged, the explanation of image the importance and the degree of difficulty of alkaline button cell leakproof.

Basically all producers all adopt conventional perpendicular type sealing ring (as Fig. 3) at present, and the defective of sealing circle has: one, the anticathode lid cooperates (as Fig. 4) very high with sealing ring.If cooperation is too tight, occur easily separating with sealing ring at the bottom of the negative cover; If cooperate too pine, then get loose easily, all can cause battery drain; Two: after adding negative pole zinc powder and electrolyte, electrolyte climbs from negative cover and sealing ring junction easily and causes leaking.Battery hermetization is difficult to guarantee to stablize, and this also is the difficult problem of the maximum that runs into of present most of alkaline button cell manufacturer.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of button cell sealing ring that can solve battery drain is provided.

For achieving the above object, the technical scheme that the utility model provides is: a kind of alkaline button cell sealing ring, it comprises the sealing ring body, and the end of sealing ring body bottom extends upward the formation bulge loop, and the madial wall of the madial wall of this bulge loop and sealing ring body and interior diapire form groove.

Described groove and negative cover bottom match.

Relatively have better operability with traditional sealing ring, and avoided assembling back electrolyte between negative cover and sealing ring, to leak, the sealing property of battery is had very desirable effect.

Description of drawings:

Fig. 1 is a cutaway view of the present utility model.

Fig. 2 is negative cover and the figure of cooperation of the present utility model.

Fig. 3 is the cutaway view of traditional alkaline battery perpendicular type sealing ring.

Fig. 4 is a negative cover and the figure that cooperates of traditional alkaline battery perpendicular type sealing ring.

Embodiment:

Present embodiment comprises sealing ring body 1, and the end of sealing ring body bottom 3 extends upward and forms bulge loop 6, and the madial wall 2 of this bulge loop forms groove 7 with the madial wall 4 of sealing ring body and interior diapire 5.Described groove 7 matches with the negative cover bottom.When sealing ring of the present utility model and the assembling of battery cathode lid, can be with sealing ring one by one by the tunnel that glue content is 10-15% sealing glue be housed, with negative cover indentation sealing circle, toasted 2-3 hour by 50-60 ℃ temperature again, this contraction of cycle basis to be sealed is complete, make it to combine well, can drop into Assembling Production with negative cover; Be that the fluid sealant water logging of 1-5% is steeped and dried up earlier with sealing ring perhaps with glue content with another kind of method, be placed on again in the anchor clamps of dress sealing ring, then, with magnetic sheet negative cover magnetic is risen, making the dark glue content of lid bottom contact 0.10-0.30mm is the glue of 25-35%, again with in the negative cover indentation sealing circle.After pressing the roasting mode baking of execution mode 1, also can drop into Assembling Production.

Claims

1, a kind of alkaline button cell sealing ring, it comprises sealing ring body (1), it is characterized in that: the end of sealing ring body bottom (3) extends upward and forms bulge loop (6), and the madial wall of this bulge loop (2) forms groove (7) with the madial wall (4) and the interior diapire (5) of sealing ring body.

2, according to a kind of alkaline button cell sealing ring of claim 1, it is characterized in that: described groove (7) matches with the negative cover bottom.