CN2416613Y

CN2416613Y - High-reliable battery with sealing structure

Info

Publication number: CN2416613Y
Application number: CN 99209692
Authority: CN
Inventors: 黎柏其
Original assignee: Shenzhen Yuebao Electronic Industry Corp
Current assignee: HYB Battery Co., Ltd.
Priority date: 1999-06-08
Filing date: 1999-06-08
Publication date: 2001-01-24
Anticipated expiration: 2009-06-08

Abstract

The utility model relates to a high-reliable battery with a sealing structure. A step is processed around the inner wall of an end face where a tubular housing 1 of the battery is connected with an upper cover 2 to get the upper cover 2 tightly connected with the inner wall of the housing 1 when the upper cover 2 is embedded into the step 3 of the tubular housing, and the housing 1 is sealed by laser welding at the joint. The sealing structure enhances the reliability of the sealing, and guarantees the sealing property, namely the leakage preventing property of the battery. Meanwhile, the utility model uses laser to conduct one-time continuous welding at the end face of the housing, which enhances work efficiency and reduces production cost.

Description

The battery of high reliability enclosuring structure

The utility model relates to battery technology, the battery of a kind of high reliability enclosuring structure of specific design.

Battery is that the application scope is wide, the great a kind of consumable products of demand, development along with new technology, manufacturing technology for battery has also had very big propelling, but the sealing problem of cell body is the key point that influences battery process and battery life always.Prior art adopts battery case outside termination loam cake to the sealing of battery unit body, carry out laser welding along loam cake with the periphery that is connected of shell, its shortcoming is that efficient is low, and sealing is difficult to guarantee and then influence the life-span of battery, meanwhile, the technology cost of the above conventional art is higher.

The purpose of this utility model is to provide a kind of battery of high reliability enclosuring structure, and the battery of this high reliability enclosuring structure can overcome the shortcoming of prior art, has good sealing and very low technology cost.

The utility model is to realize like this, construct a kind of battery of high reliability enclosuring structure, it is characterized in that, be processed with step 3 around the inwall of contact surface mutually at battery cylindrical case 1 and loam cake 2, join with described loam cake 2 and described shell 1 inwall driving fit when making described loam cake 2 be embedded on the step 3 in the cylindrical case, and 7 use laser welded seal in the joint.

Battery according to the utility model provides is characterized in that, the step 3 of described battery case 1 inwall is with the Mould Machining moulding or with the Milling Process moulding.

The battery that provides according to the utility model, it is characterized in that, described battery cylindrical case 1 is a rectangle, and described step 3 comprises four angle step parts 31 on the right angle and the limit step part 32 that is connected therebetween, and wherein the fillet of four angle step parts 31 forms positioning step less than the angle, garden of shell.

Battery according to the utility model provides is characterized in that, the rank width of described four limit step parts 32 can be very little, is guaranteeing that loam cake 2 and shell 1 are sealed under the prerequisite that closely cooperates, the rank width of four limit step parts 32 even can be zero.

Battery according to the utility model provides is characterized in that, the slit 7 that cooperates of described battery case 1 and loam cake 2 adopts that continuous laser is disposable to be welded.

The described battery that provides according to the utility model, it is characterized in that, comprise that also end face is the screw 4 of rectangle, square, garden shape, oval, this screw 4 is locked on the described loam cake 2 by insulated enclosure circle 8, insulation spacer 8 and the nut 10 of the band tapering that matches with these screw 4 shapes, constitutes conductive electrode.

The battery that provides according to the utility model, it is characterized in that, periphery in the outside of described loam cake 2 is provided with step 5, the inwall that described battery case 1 is gone into the same horizontal level of described loam cake 2 backs and described loam cake 2 steps 5 at setting-in is provided with second step 6 all around, the step 5 of described loam cake 2 and the joint portion of shell 1 second step 6 are driving fit seams 7 that laser welding forms.

Battery according to the utility model provides is characterized in that, described shell 1 second step 6 forms after shell cooperates the slit laser welding with loam cake with described loam cake 2 steps 5 and is marked with epoxy resin, lacquer fluid sealant 11 in the sulculus.

Battery according to the utility model provides is characterized in that, the driving fit seam of described battery case 1 second step 6 and the joint portion of loam cake 2 is to adopt that continuous laser is disposable to be welded.

The battery that provides according to the utility model, it is characterized in that, comprise that also end face is the screw 4 of rectangle, square, garden shape, oval, this screw is locked on the described loam cake 2 by insulated enclosure circle 8, insulation spacer 9 and the nut 10 of the band tapering that matches with this screw form, constitutes conductive electrode.

Implement the battery of the high reliability enclosuring structure that the utility model provides, can be applied to the rechargeable battery of all kinds of novel disposable or secondaries, this enclosuring structure and processing method have improved the reliability of sealing, and the sealing that guarantees battery i.e. leaks not.Use laser in the disposable continuous welding of shell end face simultaneously, improve working (machining) efficiency, reduced production cost.

In conjunction with the accompanying drawings and embodiments, further specify characteristics of the present utility model, in the accompanying drawing:

Fig. 1 is structure master's cutaway view of battery first embodiment of high reliability enclosuring structure of the present utility model:

Fig. 2 is the horizontal structure of the first embodiment shown in Figure 1 cutaway view of bowing;

Fig. 3 is structure master's cutaway view of battery second embodiment of high reliability enclosuring structure of the present utility model;

Fig. 4 is the horizontal structure of the second embodiment shown in Figure 3 cutaway view of bowing;

As shown in Figure 1, at first embodiment that is used for the square battery piece of the present utility model, by the sealing part of the battery cylindrical case 1 that sealed, die for processing machine-shaping all around or form a step 3 with Milling Process guarantees that loam cake 2 closely cooperates with it.As shown in Figure 2, there is the angle, garden at the place, four angles that battery case is square, angle, shell garden is big, angle, step part 31 garden is little, thereby formation positioning step, and the step width of four limit step parts 32 can be very little, guaranteeing that loam cake and shell are sealed under the prerequisite that closely cooperates, and four limit step parts 32 reach step width even can be zero.The above battery case 1 and loam cake 2 cooperate the disposable continuous welding of slit 7 usefulness laser, reach the purpose of sealing.In addition, the utility model is for improving sealing property, also on the sealing of electrode, done improvement, be and guarantee loam cake and insulation and the sealing of just (bearing) electrode, use end face as length, square, garden shape, oval shape and with the screw 4 of the screw cap of tapering, match with screw form sealing ring 8, insulation spacer 9 and nut 10 lockings of (band tapering), sealing ring 8 distortion this moment and reach the purpose of sealing, insulation.

In second embodiment shown in Fig. 3 and Fig. 4, in order to seal fully because the small pore that laser welded seam may occur, on the first embodiment basis, increased a sealing part by increasing by two steps 5 and 6, promptly be processed with second step 6 near port position at battery case 1 sealing part, and in loam cake 2 embeds shells be processed with step 5 on the same horizontal level of second step, step width is all greater than 0, but less than the thickness of loam cake 2.Described shell 1 second step 6 and loam cake step 5 through shell 1 with form sulculus after loam cake 2 cooperates the slit laser welding, (as shown), and can in sulculus, inject fluid sealant 11 (as epoxy resin, lacquer etc.), reach the purpose of sealing fully to cover laser welded seam 7.

Claims

1, a kind of battery of high reliability enclosuring structure, it is characterized in that, be processed with step 3 around the inwall of contact surface mutually at battery cylindrical case 1 and loam cake 2, described loam cake 2 joins with described shell 1 inwall driving fit when making described loam cake 2 be embedded on the step 3 in the cylindrical case 1, and 7 uses laser welded seal in the joint.

2, battery according to claim 1 is characterized in that, the step 3 of described battery case 1 inwall is with the Mould Machining moulding or with the Milling Process moulding.

3, according to the described battery of claim 1, it is characterized in that, described battery cylindrical case 1 cross section is a rectangle, described step 3 comprises four angle step parts 31 on the right angle and the limit step part 32 that is connected therebetween, and wherein the fillet of four angle step parts 31 forms positioning step less than the angle, garden of shell.

According to the described battery of claim 3, it is characterized in that 4, the rank width of described four limit step parts 32 can be very little, guaranteeing that loam cake 2 and shell 1 are sealed under the prerequisite that closely cooperates, the rank width of four limit step parts 32 even can be zero.

According to the described battery of claim 1, it is characterized in that 5, the slit 7 that combines of described battery case 1 and loam cake 2 adopts that continuous laser is disposable to be welded.

6, according to the described battery of claim 1, it is characterized in that, comprise that also end face is the screw 4 of rectangle, square, garden shape, oval, this screw 4 is locked on the described loam cake 2 by insulated enclosure circle 8, insulation spacer 9 and the nut 10 of the band tapering that matches with this screw form, constitutes conductive electrode.

7, battery according to claim 1, it is characterized in that, periphery in the outside of described loam cake is provided with step 5, the inwall that described battery case 1 is gone into the same horizontal level of described loam cake 2 backs and described loam cake 2 steps 5 at setting-in is provided with second step 6 all around, and the step 5 of described loam cake 2 is driving fit seams 7 that laser welding forms with the joint portion of shell 1 second step 6.

8, battery according to claim 7 is characterized in that, described shell 1 second step 6 forms after shell cooperates the slit laser welding with loam cake with described loam cake 2 steps 5 and is marked with epoxy resin, lacquer fluid sealant 11 in the sulculus.

According to the described battery of claim 7, it is characterized in that 9, the driving fit seam 7 of described battery case 1 second step 6 and the joint portion of loam cake 2 is to adopt that continuous laser is disposable to be welded.

10. according to the described battery of claim 7, it is characterized in that, comprise that also end face is the screw 4 of rectangle, square, garden shape, oval, this screw 4 is locked on the described loam cake 2 by insulated enclosure circle 8, insulation spacer 9 and the nut 10 of the band tapering that matches with screw form, constitutes conductive electrode.