CN2459761Y

CN2459761Y - End cap positioning structure for square shape secondary lithium oil cell

Info

Publication number: CN2459761Y
Application number: CN 00265237
Authority: CN
Inventors: 孙心伟
Original assignee: Nengyuan Science & Technology Co Ltd
Current assignee: Nengyuan Science & Technology Co Ltd
Priority date: 2000-12-12
Filing date: 2000-12-12
Publication date: 2001-11-14
Anticipated expiration: 2010-12-12

Abstract

The utility model relates to an end cap positioning structure for a square type secondary lithium oil cell and comprises a tank body and a end cap, wherein, at the turning points of four end angles at the open end of the tank body, a end angle with a smaller bended cambered surface is punched and formed at the top end of a bended cambered surface with a larger inner edge, which causes a horizontal supporting surface is formed between the big and the small bended cambered surfaces; the four end angles of the end cover are designed in order to match the size of the smaller bended cambered surface of the tank body so that the end cover can be clamped and positioned on the supporting surface after sheathed in the inner edge of the open end of the tank body. In this way, the utility model has the advantages that the end cover can be quickly and exactly positioned at the open end of the tank body and a laser device can be used to directly carry out sealing weld at the seaming point of the top surface, achieving the increased efficiency of simple processing.

Description

The end cap location structure of square secondary lithium battery

The utility model relates to the end cover for battery cells location structure in a kind of parts of instrument field instrument, particularly relate to a kind of combined and instant and and can be above end cap the convenient end cap location structure that carries out the square secondary lithium battery with novel tank structure of soldering and sealing.

Secondary lithium battery is owing to have high-energy-density, high-output power, quickly-chargeable, and free of contamination characteristic, has therefore become compact portable telecommunications product, such as indispensable outfits such as mobile phone, notebook computers.

The end cap compound mode of the end cap of square secondary lithium battery, existing traditional processing mode is the openend inner edge that end cap is pressed into tank body, causes tight pressing, presses commissure soldering and sealing with low power laser edge above top cover subsequently; Because its end cap is to adopt closely to be press-fitted the openend that frame mode is fixed on tank body, be press-fitted in the process above-mentioned, if end cap is undersized, therefore it is absorbed in the tank body, and there is following defective in size such as excessively then can't be pressed into or cause distortion, except the precision size degree of its top cover and tank body need strictly be controlled, its automatic mechanism that is press-fitted action is also quite complicated, cause its production capacity to reduce, and cost improves relatively.

Other the novel bulletin in Taiwan No. 265904 " the package assembly improvement of TunePower box hat ", it is improved at the problems referred to above, as shown in Figure 1 and Figure 2, its improvement place is that end cap 1 is made and the same size of tank body 2 outer rim length, be placed on the openend top then, then utilize laser aid 3 to carry out end cap 1 and the involution of tank body 2 openends at the joint close place in the face down bonding mode.

This utilizes the frame mode of face down bonding involution end cap 1, though the more traditional urgent pressing structure mode of precision requirement for end cap 1 and tank body 2 has bigger appearance nargin, but its greatest drawback is that the mode of face down bonding is very time-consuming, because of laser aid 3 must be around moving around tank body 2 outsides, compared to above end cap, the be shifted mode of soldering and sealing of tradition, more time-consuming, and end cap 1 or tank body 2 its thickness all only have the little concave point of circle 11 in order to the location, but only utilize little concave point 11 screens, add at face down bonding and still have easy skew and inaccurate defective man-hour.Therefore, announce " the package assembly improvement of TunePower box hat " patent case No. 265904, utilize the mode of face down bonding, still have many not attaining to improve part, cause it in practical application, to fail to reach best result of use with the assembling end cap.This shows that the end cap combining structure mode of the end cap of above-mentioned existing square secondary lithium battery still has many defectives, and the assistant officer waits to be improved.

Because the defective that the end cap combining structure of the end cap of above-mentioned existing square secondary lithium battery exists, the design people is based on abundant practical experience and professional knowledge, actively studied innovation, through constantly research, design, and after studying sample and improvement repeatedly, create the utility model finally.

Main purpose of the present utility model is, overcome the defective that the end cap combining structure mode of the end cap of existing square secondary lithium battery exists, and a kind of end cap location structure of novel square secondary lithium battery is provided, make it have the effect that can make end cap conveniently be positioned the tank body openend.

Another purpose of the present utility model is, a kind of end cap location structure of square secondary lithium battery is provided, and makes it have the effect that can directly carry out soldering and sealing above tank body.

Another purpose of the present utility model is, a kind of end cap location structure of square secondary lithium battery is provided, and it is had make end cap can accurately locate the effect of non-migration.

The purpose of this utility model is realized by following technical scheme.End cap location structure according to a kind of square secondary lithium battery that the utility model proposes, it includes: a tank body, it is constituted by metals such as steel nickel plating material or aluminium matter, stainless steels, and be made as square on demand, rectangle or oblong shape sample attitude; One end cap is by the shape that cooperates the tank body openend is constituted; It is characterized in that this tank body, four ends of its openend turning, angle, edge is than the top of big curved arc face within it, and punching press forms and is provided with an end angle than the small arc face, and formation is provided with a horizontal supporting surface between this large and small curved arc face; This end cap, its four end angles are made and are formed for the size than the small arc face of cooperation tank body, this end cap is sheathed go into the inner edge of tank body openend after blocking be positioned on this supporting surface.Whereby, it has the end cap of making rapidly and be accurately positioned in the tank body openend, and can utilize laser aid directly to carry out soldering and sealing at the seam crossing of end face, and can reach the enhancement effect of convenient processing.

The utility model compared with prior art has tangible advantage and good effect.By above technical scheme as can be known, the utlity model has and to make end cap conveniently be positioned the effect of tank body openend, and has the effect that above tank body, directly to carry out soldering and sealing, and can make end cap can accurately locate the effect of non-migration, and have easy making process, improve the good effect of working (machining) efficiency greatly.It is in limited field, technical development space, no matter structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and has the effect of enhancement really, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.

Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is the STRUCTURE DECOMPOSITION stereogram of existing end cap and tank body.

Fig. 2 is existing end cap and the tank body schematic diagram with the laser face down bonding.

Fig. 3 is the exploded perspective view of the preferable possible embodiments of the utility model.

Fig. 4 is the schematic diagram of the preferable possible embodiments of the utility model with laser soldering and sealing.

Fig. 5 is the tank structure vertical view of the preferable possible embodiments of the utility model.

Fig. 6 is the tank structure stereogram of the preferable possible embodiments of the utility model.

Fig. 7 is the local enlarged diagram of A portion among Fig. 5.

Fig. 8 is the tank body part schematic diagram of the preferable possible embodiments of the utility model.

Fig. 9 is the end cap of the preferable possible embodiments of the utility model and the part enlarged diagram of tank body integrated structure.

Below in conjunction with accompanying drawing and preferred embodiment, to its concrete structure of end cap location structure, feature and effect thereof according to the square secondary lithium battery that the utility model proposes, describe in detail as after.

See also Fig. 3 to shown in Figure 9, the end cap location structure of the utility model square secondary lithium battery, its possible embodiments includes:

One tank body 4, it is to utilize steel nickel plating or metals such as aluminium matter, stainless steel to constitute, and be made as square on demand, rectangle or oblong shape sample attitude;

One end cap 5 is made of the shape that cooperates tank body 4 openends;

It is characterized in that:

This tank body 4, four of its openends end turning, angle, the top of the big curved arc face R1 of edge within it, punching press forms and is provided with an end angle than small arc face R2, make big, than forming a horizontal supporting surface 41 between small arc face R1, R2;

This end cap 5, its four end angles 51 are made and are formed for the size than small arc face R2 of cooperation tank body 4, so that after it is inserted in the inner edge of tank body 4 openends, is able to blocking and is positioned on the supporting surface 41.

Whereby, it has makes the end cap 5 can be rapidly and be accurately positioned in the openend of tank body 4, and can utilize laser aid 6 directly to carry out soldering and sealing at the seam crossing 42 of end face, and can reach the enhancement effect of easy making process.

The technical characterictic of the above-mentioned announcement of the utility model seems simply, but it is through just finishing after the long-term test improvement, because of the thickness of tank body 4 generally only about 0.4mm, so how to make it have positioning supports face not a duck soup; And the utility model is to utilize the radian of curved arc face R1, R2 of the different sizes in its end angle poor, can form the supporting surface 41 of a level, and therefore, end cap 5 can not be absorbed in the tank body 4 when inserting the inner edge of openend.Therefore, end cap 5 has bigger tolerance with the precision requirement of tank body 4 than traditional mode of closely cooperating, and end cap 5 is inserted in easily in the openend of tank body 4 rapidly, and need not the process that is press-fitted via complexity, so can save time, and can reduce cost.

Again, the utility model in the prior art with the method for " face down bonding " assembling end cap 1, because of can directly utilizing laser aid 6 to carry out soldering and sealing at the seam crossing 42 of end face, so it does not need to carry out soldering and sealing around four lateral surfaces of tank body, thereby can reduce the time and the program of laser soldering and sealing, and then can improve working ability.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of end cap location structure of square secondary lithium battery, it includes:

One tank body, it is constituted by metals such as steel nickel plating material or aluminium matter, stainless steels, and be made as square on demand, rectangle or oblong shape sample attitude;

One end cap is by the shape that cooperates the tank body openend is constituted;

It is characterized in that:

This tank body, four ends of its openend turning, angle, edge is than the top of big curved arc face within it, and punching press forms and is provided with an end angle than the small arc face, and formation is provided with a horizontal supporting surface between this large and small curved arc face;

This end cap, its four end angles are made and are formed for the size than the small arc face of cooperation tank body, this end cap is sheathed go into the inner edge of tank body openend after blocking be positioned on this supporting surface.