CN203895512U

CN203895512U - Ultrathin soldering-lug button-type battery

Info

Publication number: CN203895512U
Application number: CN201420189217.7U
Authority: CN
Inventors: 周程林
Original assignee: WUHAN BONNE TECHNOLOGY Co Ltd
Current assignee: WUHAN BONNE TECHNOLOGY Co Ltd
Priority date: 2014-04-18
Filing date: 2014-04-18
Publication date: 2014-10-22
Anticipated expiration: 2024-04-18

Abstract

The utility model discloses an ultrathin soldering-lug button-type battery. The battery comprises a battery body and an insulation sleeve, wherein the top or/and the bottom of the insulation sleeve is provided with a notch, one end of a negative soldering lug or/and a positive soldering lug extends out from the notch in the same side to form a corresponding negative cover top surface or/and positive shell bottom surface, and the negative soldering lug or/and the positive soldering lug is/are fitted to the corresponding negative cover top surface or/and the positive shell bottom surface. The positive soldering lug or/and the negative soldering lug of the insulation sleeve is/are respectively provided with the notch, so that the thickness of the battery is reduced by the thickness of one or two layers of insulation sleeves; while the positive notch and the negative notch are arranged, the insulation sleeve tightly wraps a battery shell, so that the overall thickness of the battery is reduced on the basis that the good application performance of the soldering-lug button-type battery is guaranteed.

Description

Ultrathin weld tabs button cell

Technical field

The utility model relates to button cell technology, refers to particularly a kind of ultrathin weld tabs button cell.

Background technology

Weld tabs button cell is widely used in electronic product, at present, domestic button cell processor is when producing weld tabs button cell, conventionally the method adopting is: first at insulating coating of outer edge portion bag of button cell, then respectively positive plate and negative plate are welded on the positive and negative polarities shell of button cell with spot welding machine point, can complete the production of a weld tabs button cell.The gross thickness H of existing this final products as shown in Figure 1, H=h1+h2+h3+h4 * 2 (thickness that h1 is anodal weld tabs, h2 is the thickness of negative pole weld tabs, the thickness that h3 is battery body, h4 is the thickness of one deck insulating case).Along with electronic product towards ultra-thin, size is little, the development of light method, reduces the development trend that thickness becomes weld tabs button cell.But, construction package from weld tabs button cell, the thickness of battery itself is stipulated by industry standard, can not change, it is also little that thin possibility falls in the thickness of the insulating case using at present, and the full-scale requirement that also needs to meet client of single weld tabs, the thin confined space reducing gradually that adapts to will fall in the thickness of whole weld tabs button thus, its difficulty is well imagined, becomes weld tabs button cell technical problem urgently to be resolved hurrily.

Summary of the invention

The purpose of this utility model will provide a kind of ultrathin weld tabs button cell exactly, and this weld tabs button cell is guaranteeing, on the good basis of battery serviceability, to have reduced the gross thickness of battery.

For achieving the above object, the technical solution adopted in the utility model is: a kind of ultrathin weld tabs button cell, comprise battery body and insulating case, described battery body comprises battery case and is built in electrochemical reaction material and the electrode in described battery case, described insulating case coaxial package is in the periphery of described battery case, described battery case comprises top negative cover and the bottom anode cover of fastening, the end face of described insulating case is fitted in the end face outer of described negative cover, the bottom surface of described insulating case is fitted in the outer, bottom surface of described anode cover, described negative cover end face is welded with negative pole weld tabs, described anode cover bottom surface is welded with anodal weld tabs, described insulating case top is or/and bottom has breach, described negative pole weld tabs is or/and corresponding described negative cover end face is extended or/and described anode cover bottom surface from the described indentation, there of its homonymy in one end of described anodal weld tabs, and described negative pole weld tabs or/and its corresponding described negative cover end face of described anodal weld tabs or/and described anode cover bottom surface laminating.

Further, described breach comprises the negative pole breach being opened on described insulating case end face and is opened in the anodal breach on described insulating case bottom surface, described negative pole weld tabs and the laminating of described negative cover end face, and described negative cover end face is extended from described negative pole indentation, there in its one end; Described anodal weld tabs and the laminating of described anode cover bottom surface, and described anode cover bottom surface is extended from described anodal indentation, there in its one end.

Further, described insulating case is hollow ring body, and it comprises the described end face of annular and the described bottom surface of annular, between described end face and bottom surface, is connected with annular sidewall, and described side wall inner surfaces shape coordinates with described battery case sidewall external surface shape.

Further, described insulating case sidewall section is bending arc.

Compared with prior art, the utlity model has following advantage:

One, that two circle that extends to battery case end face and bottom surface because of insulating case has been to pack tightly fixation not play insulating effect, the utility model utilizes this feature, at the anodal weld tabs of insulating coating or/and negative pole weld tabs place offers breach, namely the part insulating case being originally pressed under weld tabs is removed, thereby make the existing weld tabs button cell of weld tabs button cell Thickness Ratio in the utility model thickness reduction one or the thickness of two-layer insulating case, make this weld tabs button cell can more be widely used for ultra-thin lightweight electronic product, significantly widened the range of application of weld tabs button cell, improved product competitiveness in the market.

Its two, the utility model, when offering anodal breach and negative pole breach, wraps tightly on battery case insulating case, has guaranteed the insulation between positive pole and negative pole, is guaranteeing, on the good basis of weld tabs button cell serviceability, to have reduced the gross thickness of battery.

Accompanying drawing explanation

Fig. 1 is a kind of plan structure schematic diagram of ultrathin weld tabs button cell.

Fig. 2 is the section structure schematic diagram of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail, is convenient to more clearly understand the utility model, but they do not form and limit the utility model.

As Fig. 1, shown in Fig. 2, a kind of ultrathin weld tabs button cell, comprise battery body and insulating case 1, described battery body comprises battery case and is built in electrochemical reaction material and the electrode in described battery case, described insulating case 1 coaxial package is in the periphery of described battery case, described battery case comprises top negative cover 2 and the bottom anode cover 3 of fastening, the end face 101 of described insulating case 1 is fitted in the end face outer of described negative cover 2, the bottom surface 102 of described insulating case 1 is fitted in the outer, bottom surface of described anode cover 3, described insulating case 1 is hollow ring body, it comprises the annular top surface 101 that is in battery case end face and the annular bottom surface 102 that is in battery case bottom surface, 102 of described end face 101 and bottom surfaces are connected with annular sidewall 103, described sidewall 103 inner surface configurations coordinate with described battery case sidewall external surface shape, these insulating case sidewall 103 sections are bending arc, described insulating case 1 top has negative pole breach 4, this negative pole breach 4 is opened on described end face 101, described negative cover 2 end faces are welded with negative pole weld tabs 5, described negative pole weld tabs 5 and described negative cover 2 end face laminatings, and described negative cover 2 end faces are extended from described negative pole breach 4 in its one end, negative pole breach 4 directly contacts negative pole weld tabs 5 with negative cover 2 end faces, and be not pressed on insulating case end face 101, thereby make battery reduce the thickness of one deck insulating case, described insulating case 1 bottom has anodal breach 6, this positive pole breach 6 is opened on described bottom surface 102, described anode cover 3 bottom surfaces are welded with anodal weld tabs 7, described anodal weld tabs 7 and described anode cover 3 bottom surface laminatings, and described anode cover 3 bottom surfaces are extended from described anodal breach 6 in its one end, anodal breach 6 connects with anode cover 3 bottom surfaces anodal weld tabs 7 to contact, and is not pressed on insulating case bottom surface 102, thereby makes battery reduce the thickness of one deck insulating case again.Therefore, the gross thickness of this weld tabs button cell should be H, H=h1+h2+h3 (thickness that h1 is anodal weld tabs, h2 is the thickness of negative pole weld tabs, the thickness that h3 is battery body).This button cell also can, only at a side gap of insulating case, now reduce the thickness of one deck insulating case.

The production method of above-mentioned ultrathin weld tabs button cell, comprises the following steps:

1) get the cylindrical shape insulating sleeve (positive pole-face coding) matching with battery case size, in cannula tip, cut negative pole breach, at casing shoe, cut anodal breach, the flat shape of described negative pole breach is rectangle, the width of its length >=described negative pole weld tabs, its length is 3～10mm preferably, and width is 1/3 of battery body thickness, and width is 0.5～1.5mm preferably; The flat shape of described anodal breach is rectangle, the width of its length >=described anodal weld tabs, and its length is 3～10mm preferably, and width is 1/2 of battery body thickness, and width is 0.8～2.5mm preferably.The height of described sleeve pipe is determined according to battery size, is preferably cut into 5.2～7.2mm;

2) battery body is placed on locating module, and by the sleeve pipe coaxial package cutting on battery body, sleeve pipe is positioned;

3) battery body is put into heat shrink wrapping machine together with suit sleeve pipe thereon and carry out thermal contraction, sleeve pipe laminating is wrapped in battery body periphery, form the insulating case between negative cover and anode cover, wherein, need in advance heat shrink wrapping machine temperature to be adjusted between 90 ℃～120 ℃, the pyrocondensation time is adjusted to 2 minutes;

4) battery body of the tape insulation cover forming in step 3) is put into jig, at the negative cover end face point of the battery case negative pole weld tabs of burn-oning, this negative pole weld tabs is fitted with negative cover end face, and negative cover end face is extended from negative pole indentation, there in its one end; And at the anode cover bottom surface of the battery case point anodal weld tabs of burn-oning, this positive pole weld tabs and the laminating of anode cover bottom surface, and anode cover bottom surface is extended from anodal indentation, there in its one end.

The utility model, guaranteeing, under the prerequisite of button cell performance, to make existing weld tabs button cell thickness reduction, has been widened product range of application, and has been promoted the competitiveness of product in market.

Claims

1. a ultrathin weld tabs button cell, comprise battery body and insulating case (1), described battery body comprises battery case and is built in electrochemical reaction material and the electrode in described battery case, described insulating case (1) coaxial package is in the periphery of described battery case, described battery case comprises top negative cover (2) and the bottom anode cover (3) of fastening, the end face (101) of described insulating case (1) is fitted in the end face outer of described negative cover (2), the bottom surface (102) of described insulating case (1) is fitted in the outer, bottom surface of described anode cover (3), it is characterized in that: described negative cover (2) end face is welded with negative pole weld tabs (5), described anode cover (3) bottom surface is welded with anodal weld tabs (7), described insulating case (1) top is or/and bottom has breach, described negative pole weld tabs (5) is or/and corresponding described negative cover (2) end face is extended or/and described anode cover (3) bottom surface from the described indentation, there of its homonymy in one end of described anodal weld tabs (7), and described negative pole weld tabs (5) or/and its corresponding described negative cover (2) end face of described anodal weld tabs (7) or/and described anode cover (3) bottom surface laminating.

2. ultrathin weld tabs button cell according to claim 1, it is characterized in that: described breach comprises the negative pole breach (4) being opened on described insulating case (1) end face (101) and is opened in the anodal breach (6) on described insulating case (1) bottom surface (102), described negative pole weld tabs (5) and the laminating of described negative cover (2) end face, and described negative cover (2) end face is extended from described negative pole breach (4) in its one end; Described anodal weld tabs (7) and the laminating of described anode cover (3) bottom surface, and described anode cover (3) bottom surface is extended from described anodal breach (6) in its one end.

3. ultrathin weld tabs button cell according to claim 1 and 2, it is characterized in that: described insulating case (1) is hollow ring body, it comprises the described end face (101) of annular and the described bottom surface (102) of annular, between described end face (101) and bottom surface (102), be connected with annular sidewall (103), described sidewall (103) inner surface configuration coordinates with described battery case sidewall external surface shape.

4. ultrathin weld tabs button cell according to claim 3, is characterized in that: described insulating case sidewall (103) section is bending arc.