CN207459049U - A kind of attachment device of lithium battery pole and lug - Google Patents

Abstract

The attachment device of a kind of lithium battery pole and lug, including lug, pole, tab welding is on pole, and the ultrasonic wave metal that is welded as of lug and pole welds, and pole includes a plate, and a column material stretched out out of housing is fixed on plate.Two one shape of core arrangement, between place pole, intermediate two lugs are all welded on the opposing bottom surface equipped with column material of pole.Compared with the prior art, the technique effect of the utility model is, the utility model is used tab welding in the side of pole, is increased the contact area of lug and pole, can be carried high current charge-discharge, meets the using effect and loading demand of lithium battery.

Description

A kind of attachment device of lithium battery pole and lug

Technical field

The utility model is related to be related to the connection method of a kind of lithium battery pole and lug, belong to technical field of lithium batteries.

Background technology

With the development of modern electronic technology, the equipment of miniaturization is increasing, and very high requirement is proposed to power supply.Electricity Chemical device enters the large-scale practical stage therewith.Electrochemical device early stage is used primarily in mobile phone and laptop etc. On people's compact electric apparatus articles for use, with the development of technology and the expansion in field, electrochemical device starts to motorcycle, automobile, electronic Instrument, electric automobiles development, particularly recent, as the lithium that automobile-used high-power charge and discharge power source development is rapid but traditional Battery design uses box hat, the designs such as aluminum plastic film or plastic housing, and the deriving structure of electric current is designed by low current charge and discharge, it is difficult to which carrying is big Current charging and discharging influences the using effect and loading demand of lithium battery.

Utility model content

Purpose to be solved in the utility model is：In view of the above-mentioned problems, propose a kind of welding of new pole and lug Method, this method make the internal resistance of cell lower, and highly conductive, high heat conduction can carry high current charge-discharge.

The technical solution of the utility model is specially：

The connection of a kind of lithium battery pole and lug, including lug, pole, tab welding is on pole, lug and pole Be welded as ultrasonic wave metal welding, pole 2 includes a plate, fixes a column material stretched out out of housing on plate.

Two one shape of core arrangement, between place pole, what intermediate two lugs were all welded on pole is equipped with column The opposing bottom surface of material.

Two core arrange that pole is placed in the end of cathode one side, and two lugs are respectively welded at the upper and lower of pole up and down Side.

Compared with the prior art, the technique effect of the utility model is that the utility model is used tab welding in pole Side, increase the contact area of lug and pole, high current charge-discharge can be carried, meet the using effect of lithium battery and negative Load demand.

Description of the drawings

Fig. 1 is the welding schematic diagram of core and pole.

Fig. 2 is the left view schematic diagram of Fig. 1 welds.

Fig. 3 is the welding schematic diagram of core 3 and pole.

Fig. 4 is the left view schematic diagram of Fig. 3 welds.

Fig. 5 is the structure diagram of this battery.

Fig. 6 is pole column structure schematic diagram.

Specific embodiment

Such as Fig. 5-6, a kind of battery, the housing 4 including both ends open is interior to be equipped with inner core 12, and the both ends of housing 4 are solid respectively Determine anode cover board 5 and cathode cover board 6, which is fixed on inner core 12 in housing 4, and housing 4 is left white region to extension It stretches to form lug 11, lug 11 is welded on pole 2, and there are two types of poles 2, and it is Positive Poles 22 to be located at anode one side, is located at Cathode one side is cathode pole 21.Pole 2 includes the plate being located in housing 4, and one is fixed out of housing 4 on plate The column material of stretching.

Inner core 12 includes two groups of core 1, and the lug 11 of the anode cathode of core 1 is all welded on pole 2.

The wherein welding of anode：Such as Fig. 1-2, two 1 one shape of core arrangements, between place pole 2, intermediate two Lug 11 is all welded on the opposing bottom surface equipped with column material of pole 2.

The welding of cathode：Such as Fig. 3-4, two core are arranged about 1, and pole 2, two lugs are placed in the end of cathode one side It is respectively welded at the upper and lower side of pole 2.

Cathode pole 21 is stretched out from cathode cover board 6, the end thread cooperation cathode nut 10 of extension, cathode nut Insulation spacer 8 is equipped between 10 and cathode cover board 6, sealing ring 7 is equipped between cathode pole 21 and cathode cover board 6.

Positive Poles 22 are stretched out from anode cover board 5, the end thread cooperation anode nut 9 of extension, anode nut 9 Insulation spacer 8 is equipped between anode cover board 5, sealing ring 7 is equipped between Positive Poles 22 and anode cover board 5.

Lug 11 is welded as ultrasonic wave metal welding, advantage with pole 2：

1）, welding material do not melt, not fragile metallic character.

2）, good conductivity after welding, resistance coefficient is extremely low or near-zero.

3）, to welding metal surface requirement it is low, oxidation or plating it is solderable.

4）, weld interval it is short, be not required to any scaling powder, gas, solder.

5）, welding no-spark, Environmental Safety.

Its processing method is：

Inner core 12 includes two groups of core 1, and the lug 11 of the anode cathode of core 1 is all welded on pole 2, this is welded and fixed In two steps：

The welding of anode：Such as Fig. 1-2, two 1 one shape of core arrangements, between place pole 2, intermediate two lugs 11 are all welded on the opposing bottom surface equipped with column material of pole 2, and two lugs weld at twice, and during welding, lug 11 contacts pole 2, soldering tip 91 is located at the top of lug 11, and weld nest 92 is located at the lower section of pole 2, and supersonic generator hair shake certain time is completed Welding.After the completion of welding, two core 1 are all flipped up 90 °, complete its being welded and fixed with pole 2.

The welding of cathode：Such as Fig. 3-4, two core are arranged about 1, and pole 2, two lugs are placed in the end of cathode one side The upper and lower side of pole 2, upside lug the upper surface of are contacted respectively as soldering tip 91, are weld nest 92, ultrasonic wave below the lug of downside Generator hair shake certain time, completes welding, completes its being welded and fixed with pole 2.

Housing 4 is made of the method for 1060 serial aluminium drawing and formings, and shaping rear surface is made using differential arc oxidization technique Surface forms fine and close, wear-resisting, heat conduction, the Al of insulation₂O₃Ceramic layer.

Anode cover board 5 and cathode cover board 6 are molded using 1060 serial aluminiums with process for stamping, and shaping rear surface is using micro- Arc oxidation technology makes surface form fine and close, wear-resisting, heat conduction, the Al of insulation₂O₃Ceramic layer.Shell is plugged in using agitating friction weldering Body both ends.

Inner core 4 is in housing, includes positive plate, negative plate and membrane.This example is using in the making of full lug winding method Core, when winding, are sequentially placed negative plate, membrane, positive plate, membrane.The Multilayer pole ear of inner core with pole is fit together, is welded Head pushes weld nest, and supersonic generator hair shake certain time completes the welding of inner core lug and pole.In order to ensure the electrochemistry Device can carry high current charge-discharge, ensure that 22 sectional area of Positive Poles is not less than the sectional area of the full lug of anode, cathode pole 21 sectional area of column is not less than the sectional area of the full lug of cathode.

In the production process, liquid injection hole fluid injection use is reserved on anode cover board, after the completion of fluid injection chemical conversion, then liquid injection hole is used Sealing nail closure, and liquid injection hole is fully sealed using stirring friction-welding technique, prevent the electrolyte in housing 1 from overflowing.

The material of the Positive Poles is aluminium nickel plating, and sectional area is not less than the sectional area of the full lug of the anode.

The material of the cathode pole is copper nickel plating, and sectional area is not less than the sectional area of the full lug of the cathode.

The anode nut and cathode nut material are copper nickel plating；

The application provides the welding method of a kind of pole and lug, including soldering tip, weld nest, lug, pole.By the more of inner core Layer lug fits together with pole, and soldering tip pushes weld nest, supersonic generator hair shake certain time, you can complete cell polar ear With the welding of pole.

The application, which realizes, welds the problem of inconvenient when a kind of full lug lithium battery coiling core pole is connected with lug.

Other are referring to the prior art.

Claims (3)

1. a kind of attachment device of lithium battery pole and lug, including lug（11）, pole（2）, lug（11）It is welded on pole （2）On, lug（11）With pole（2）Be welded as ultrasonic wave metal welding, pole（2）It is fixed on plate including a plate One from housing（4）The column material of interior stretching.

2. the attachment device of lithium battery pole as described in claim 1 and lug, it is characterised in that：Two core（1）One word Shape arrange, between place pole（2）, intermediate two lugs（11）All it is welded on pole（2）The offside bottom equipped with column material Face.

3. the attachment device of lithium battery pole as described in claim 1 and lug, it is characterised in that：Two core（1）Up and down Pole is placed in arrangement, the end of cathode one side（2）, two lugs are respectively welded at pole（2）Upper and lower side.