CN101373823A

CN101373823A - Multifunctional battery cathode pole with capping structure

Info

Publication number: CN101373823A
Application number: CNA2007100452047A
Authority: CN
Inventors: 熊雪松; 聂辉祥
Original assignee: SHANGHAI HUAWU BO'ER BATTERY TECHNOLOGY Co Ltd
Current assignee: Jiangxi poly power energy Co., Ltd.
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2009-02-25

Abstract

The invention discloses a cathode pole with a cap structure, which can protect the explosion-proof copper foil of a battery from cracking under the action of external force. A battery (casing) is usually provided with an explosion valve, which easily causes high pressure at high temperature or in short circuit. If explosion-proof copper foil is not provided, explosion is possible to happen; but after the copper foil is arranged (as shown in figure 1), once the pressure proceeds 8-10 kilograms, the copper foil cracks naturally, the substances in the battery such as electrolyte leak out, therefore, explosion can be not caused; and the copper foil is easy to crack in the working procedures of production, assembly and maintenance. The structure can not only protect the explosion-proof copper foil, but also ensure that the cathode is led out through the cap structure. The cathode pole adopts the structure that a round (or rectangular) stainless steel cap is firstly designed, as shown in figure 2, the middle of the cap is convex, three to five leaking holes (the aperture is 1-2 millimeters) are formed on the edge of the convex part, and the outer edge is 0.5 mm larger than the opening of the explosion-proof copper foil. The cap is used for covering the opening of the explosion-proof copper foil to ensure that the copper foil is about 3 mm away from the top of the cap, and then the structure is spot-welded on the battery casing.

Description

A kind of multi-functional battery cathode pole with capping structure

Technical field

The present invention relates to a kind of multi-functional battery cathode pole with capping structure, is that protection battery anti-explosion Copper Foil is not subjected to the effect of external force and breaks, and allows it be subjected to inside battery to produce HTHP and breaks naturally, thereby reach explosion-proof function.Battery cathode can directly be drawn by this capping structure lead simultaneously.After particularly installing this block, make things convenient for greatly battery between each operation and assembling maintenance etc. convenient, can be because of not damaging Copper Foil because of carelessness and causing battery to damage.Being specially adapted to less the requirement again of volume is provided with on the battery of rupture pressure disc.

Background technology

At present, the battery anti-explosion Copper Foil on the market all is that exposed and Copper Foil itself just is subjected to the external force effect easily outside, in case and the Copper Foil just damage and can't repairing of battery of breaking.The available dynamic battery generally has positive terminal and negative terminal; and in battery manufacturing process; in order to protect explosion-proof Copper Foil not to be damaged; each operation should be prepared some frock clamps especially or hold with purpose-made pallet; need SC, particularly battery shortcoming such as the explosion-proof Copper Foil of the easiest damage when assembling welding and dismounting maintenance simultaneously.

Summary of the invention

The battery cathode pole purpose of the capping structure that the present invention relates to is that the explosion-proof Copper Foil of protection is not subjected to the external force effect and breaks, and has guaranteed the original function of Copper Foil; Can also replace simultaneously original negative pole pole to use; Improved operating efficiency; Reduced production cost.

Technical scheme of the present invention is: add the steel block of the band leak that welds a special projection on the circle between available dynamic anode post and the negative terminal (or square) leak (hole that seals with Copper Foil), feasible block has been protected Copper Foil not to be subjected to the external force effect and has been broken.The steel block here generally has circular or square, and there is bossing the centre, and the area of bossing is the area of leak, and the marginal portion mainly is directly to contact with battery container, is convenient to welding.And bossing and knee, marginal portion have 3～5 leak apertures (for leak under the Copper Foil 1/3～1/5), individual area is arranged at the top is the big isosceles triangle in Copper Foil hole 1/4, two waist limits are cut, and the angle that backfin is down cut becomes 90 ° to form the explosion-proof pin structure with the top, steel block point is welded in the top (3 points of circular weldering, 6 points of square weldering) of Copper Foil.

The manufacture method of the circular or square steel block of mentioning among the present invention is: the punch forming of first die sinking tool, carry out deburring again.A thickness is struck out circular or square small pieces at 1～1.5 millimeter stainless steel, small pieces are struck out the block of aperture and projection again, and block is welded in the explosion-proof leak Copper Foil top of battery container, block can be made the negative pole pole and uses simultaneously.As adopt the method, can economize a negative terminal, thereby reach the invention function after the improvement.

The present invention's beneficial effect compared with prior art is: the production technology of not only having improved battery (box hat battery), enhance productivity greatly, do not delay and damage explosion-proof Copper Foil in process of production, and can allow explosion-proof Copper Foil bring into play original function, save the negative pole pole simultaneously, reduced production cost.Work as battery like this and in assembling and maintenance procedures, can not touched, play the effect of protection battery anti-explosion Copper Foil by external force.

Description of drawings

Accompanying drawing 1 is the battery structure figure of band circle and square Copper Foil.

Accompanying drawing 2 is structure charts of circular and square steel block.

Accompanying drawing 3 is the battery structure figure after the assembling of circular and square steel block.

The number in the figure explanation:

The 1-Copper Foil; 2-negative pole pole; The 3-Positive Poles; 4-leaks aperture;

The 5-lug of blocking a shot; The 6-raised cap; The 7-explosion-proof pin; The 8-block; The 9-battery container.

Embodiment

Earlier steel plate is washed into some little steel discs, then little steel disc is washed into the structure that band leaks the steel block 8 of aperture 4 and raised cap 6 (Copper Foil is size generally).Then will block a shot and 8 lie on the battery Copper Foil 1, remain in the 3mm by the distance of above-mentioned full-length Copper Foil 1 with raised cap 6, blocking a shot simultaneously 8 can replace original negative pole pole 2 to use, and uses as the negative lug of new construction at the high spot welding block lug 5 of block 8.Bossing and knee, marginal portion are opened 3～5 and are leaked apertures 4, and individual area is arranged at the top is the big isosceles triangle in Copper Foil hole 1/4, two waist limits are cut, and the angle of cutting of backfin down become the structures of 90 ° of formation explosion-proof pins 7 with the top.Carry out spot welding with will block a shot outward flange and Copper Foil place edge battery container 9 of spot welding machine at last, point is welded in the top (3 points of circular weldering, 6 points of square weldering) of Copper Foil, has so just constituted the battery cathode pole of the capping structure that we want.

Claims

1. the capping structure negative pole pole protecting the battery anti-explosion Copper Foil not to be subjected to the external force effect and break is the stainless steel block of band negative pole pad, has square and circular two kinds.This block shape intermediate projections, the isosceles triangle opening of a length of side less than 3mm arranged at the boss top.According to two equilateral incisions, and become 90 ° to form the explosion-proof pin structures with the top drift angle backfin down on triangle.Open 3～5 at the high spot edge and leak apertures, the high spot edge is not the same with explosion-proof Copper Foil mouth place edge contour size, and crowning and crowning not are apart from should reaching 4mm, and interior distance is about 3mm.

2. a kind of capping structure negative pole pole of protecting the battery anti-explosion Copper Foil not to be subjected to the external force effect and breaking according to claim 1; it is characterized in that: block is buckled on the explosion-proof Copper Foil of battery; make it identical, go up (being no more than 6～10 solder joints) with the spot welding machine welding again.

3. according to claim 1,2 described a kind of capping structure negative pole poles of protecting the battery anti-explosion Copper Foil not broken by the external force effect; it is characterized in that: block is natural zone negative electricity (because housing band negative electricity); battery need not to draw the negative pole pole in addition, is that negative lug is welded on the block high spot.

4. a kind of capping structure negative pole pole of protecting the battery anti-explosion Copper Foil not to be subjected to the external force effect and breaking according to claim 1; it is characterized in that: in case outside batteries is when producing HTHP; be that natural leak is not obstructed, can be subjected to applied external force to cause the Copper Foil damage battery that breaks in addition.