CN201562719U - Cylindrical battery - Google Patents

Abstract

The utility model discloses a cylindrical battery which comprises a wound core, a cover cap and a positive ear which is bent and led out from the wound core and welded on a positive ear of the cover cap; after being secondary bent, the positive ear which is bent and led out from the wound core passes through the axis of the cover cap, and is welded on the connecting surface of the cover cap. The cylindrical battery can prevent the contact with the inner wall in the steel wheel to cause the possible internal short-circuit of an electricity core, so as to effectively overcome the problem that the electricity core cannot be charged in a charging procedure which is caused thereby.

Description

Cylindrical battery

Technical field

The utility model relates to battery and makes the field, relates in particular to a kind of cylindrical battery.

Background technology

Cylindrical battery is the very general battery structure of a kind of application, it is mainly by the volume core, block and the anode ear of drawing and being welded on the block from the bending of volume core constitute, with reference to figure 1 and Fig. 2, in the existing cylindrical battery structure, anode ear 2 twines district 201 by insulating tape, main body 202, and welding region 203 constitutes, after anode ear 2 bendings of drawing of volume core 1, its welding region 203 directly is welded on the solder side 31 of block 3 nearby, the shortcoming of this spot welding mode is that anode ear is long because of the lap that bending forms, and it is very near with the distance of box hat inwall, the insulating tape that adds insulating tape winding district 201 on the anode ear might come off, very easily cause anode ear to contact with the inwall of box hat, internal short-circuit before causing electric core uncharged makes electric core occur situation about can't charge often in the charging operation.

The utility model content

Technical problem to be solved in the utility model is: a kind of cylindrical battery is provided, and this battery can effectively be avoided causing the problem that electric core can't charge occurring in the charging operation because of anode ear contacts with the box hat inwall.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of cylindrical battery includes volume core, block, and draws and be welded on anode ear on the block from the volume core, and the anode ear of drawing from the bending of volume core is after the secondary bending, and the axle center through block is welded on the joint face of block.

The beneficial effects of the utility model are:

Example of the present utility model is welded on the block duralumin sheet by anode ear being passed the block axle center, thereby significantly reduced the lap length that anode ear forms because of bending, avoided it to contact and caused the possibility of internal short-circuit, effectively overcome and therefore occur the problem that to charge in the charging operation that produces with the box hat inwall.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Description of drawings

Fig. 1 is the cutaway view of the cylindrical battery structure of prior art.

Fig. 2 be in the cylindrical battery structure of prior art welding region with respect to the position view of block.

Fig. 3 is the cutaway view of the embodiment of cylindrical battery that provides of the utility model.

Fig. 4 be in example of cylindrical battery of providing of the utility model welding region with respect to the position view of block.

Embodiment

With reference to figure 1 and Fig. 2, present embodiment mainly includes volume core 1, block 3, and draws and be welded on anode ear on the block 3 from volume core 1 bending, the anode ear of drawing from volume core 1 bending through the axle center of block, is welded on the joint face 31 of block 3 after the secondary bending.Wherein, described joint face 31 is generally the duralumin sheet.

During specific implementation, will block a shot 3 is placed in the suitable mold, and anode ear 2 is floating, passes the axle center of block 3, after point is welded in joint face 31, will block a shot and 3 cover and rolling up on the core 1, can form the structure of this example.It should be noted that when welding and should guarantee to be welded in the joint face 31, can not exceed joint face.

In the example of the present utility model, anode ear 2 through bendings draw, secondary bending and some postwelding, " Z " font structure that forms has significantly reduced the lap length that anode ear forms because of bending, avoided it to contact and caused the possibility of internal short-circuit, effectively overcome and therefore occur the problem that to charge in the charging operation that produces with the box hat inwall.

The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.

Claims (3)

1. cylindrical battery includes volume core, block, and draws and be welded on anode ear on the block from the bending of volume core, it is characterized in that: the anode ear of drawing from the bending of volume core is after the secondary bending, and the axle center through block is welded on the joint face of block.

2. cylindrical battery as claimed in claim 1 is characterized in that, the joint face of block is the duralumin sheet.

3. cylindrical battery as claimed in claim 1 or 2 is characterized in that, the anode ear after the secondary bending forms " Z " font structure.

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