CN102489857A - Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap - Google Patents
Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap Download PDFInfo
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- CN102489857A CN102489857A CN2011104052317A CN201110405231A CN102489857A CN 102489857 A CN102489857 A CN 102489857A CN 2011104052317 A CN2011104052317 A CN 2011104052317A CN 201110405231 A CN201110405231 A CN 201110405231A CN 102489857 A CN102489857 A CN 102489857A
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- nickel strap
- welding
- pole ears
- welded
- aluminium pole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a method for welding a positive electrode aluminum electrode tab of a lithium ion battery and a nickel strap. The nickel strap comprises a folding part and a welding part. The method comprises the following steps of: bending the folding part of the nickel strap, aligning the folding part with the welding part and overlapping; inserting the positive electrode aluminum electrode tab to be welded between the bent folding part and the welding part of the nickel strap, and aligning the nickel strap with the positive electrode aluminum electrode tab for combining; flattening the positive electrode aluminum electrode tab to be welded and the nickel strap which are combined horizontally; and welding the positive electrode aluminum electrode tab to be welded and the nickel strap by using resistance welding equipment to form the positive electrode aluminum electrode tab which is welded with the nickel strap fixedly. By the method for welding the positive electrode aluminum electrode tab of the lithium ion battery and the nickel strap, the positive electrode aluminum electrode tab can be welded with the nickel strap effectively and reliably, so that the positive electrode aluminum electrode tab and equipment such as a circuit board and the like can be subjected to tin welding conveniently, and the method is easy to operate.
Description
Technical field
The present invention relates to battery manufacturing technology field, particularly relate to the welding method between a kind of lithium ion cell positive aluminium pole ears and the nickel strap.
Background technology
At present; Polymer Li-ion battery is as a kind of novel lithium ion battery; Not only have advantages such as voltage height, specific energy height, good cycle; And compare traditional box hat lithium ion battery and improved its security performance more greatly, so polymer Li-ion battery has been widely used in various digital products such as notebook, mobile phone, digital camera, bluetooth earphone, portable media player.
Current, the positive pole of polymer Li-ion battery adopts aluminium as conductive electrode, and negative pole uses nickel as conductive electrode, possesses extraordinary relatively stable performance and electric conductivity, is the general both positive and negative polarity ear pole material of present polymer Li-ion battery.
Because battery need be connected on the host circuit board, need be welded to connect between lug and the circuit board, ordinary circumstance is used soldering to connect and is accomplished last connection.Nickel material possesses good soldering and connects performance, and the compatibility of aluminum and tin is very poor, can not directly carry out soldering and connect.In order to guarantee that aluminium pole ears obtains good welding effect in soldering connects, need aluminium pole ears be changeed being welded as nickel lug (being about to aluminium pole ears welds with nickel strap mutually) earlier, and then connect operation carrying out soldering between the equipment such as nickel lug and circuit board.
Therefore, press for a kind of method of developing at present, it can be effectively, reliably aluminium pole ears is welded with nickel strap mutually, and simple to operate, is easy to apply widely.
Summary of the invention
In view of this; The purpose of this invention is to provide the welding method between a kind of lithium ion cell positive aluminium pole ears and the nickel strap, it can be effectively, reliably anodal aluminium pole ears is welded with nickel strap mutually, thus convenient continue and equipment such as circuit board between carry out soldering and connect operation; And it is simple to operate; Can guarantee the whole serviceability of lithium ion battery, be applicable to large-scale production application, be of great practical significance.
For this reason, the invention provides the welding method between a kind of lithium ion cell positive aluminium pole ears and the nickel strap, said nickel strap includes folding part and weld part, comprises step:
At first, align the folding part overlapping with weld part then with the folding part bending of nickel strap;
Anodal aluminium pole ears to be welded is inserted between the said nickel strap folding part and this two-layer nickel strap of weld part after the bending, and said nickel strap and the alignment of anodal aluminium pole ears are lumped together;
Anodal aluminium pole ears said to be welded that will lump together then and said nickel strap carry out level and flatten;
After pressing, use resistance welding equipment that said anodal aluminium pole ears to be welded and said nickel strap are carried out welding operation, the final generation fixed the anodal aluminium pole ears that nickel strap is gone up in welding.
Wherein, said nickel strap is L shaped nickel strap.
Wherein, said folding part is positioned at said weld part left end top.
Wherein, the connecting portion right ends has semicircular breach between said folding part and the weld part, has one to crease line between said two breach.
Wherein, said nickel strap is the nickel strap with matte surface.
Wherein, said resistance welding equipment is a mash welder.
Wherein, Said use resistance welding equipment is specially the step that said anodal aluminium pole ears to be welded and said nickel strap carry out welding operation: be arranged at intervals with two pads at said folding part and the weld part overlapping position that aligns; Use mash welder earlier with said anodal aluminium pole ears to be welded and one of them pad of said nickel strap welding; Then at another pad point of mobile continued welding, realize that finally two means of spot welds fix.
Visible by above technical scheme provided by the invention, compared with prior art, the invention provides the welding method between a kind of lithium ion cell positive aluminium pole ears and the nickel strap; It can be effectively, reliably anodal aluminium pole ears is welded with nickel strap mutually; Thereby convenient continue and equipment such as circuit board between carry out soldering and connect operation, and simple to operate, can guarantee the whole serviceability of lithium ion battery; Be applicable to large-scale production application, be of great practical significance.
Description of drawings
Fig. 1 is the flow chart of the welding method between a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap;
Fig. 2 is the appearance assumption diagram of employed nickel strap in the welding method between a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap;
Fig. 3 is the welded condition sketch map of welding method when nickel strap not being wrapped the battery aluminium pole ears between utilization a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap;
Fig. 4 is wrapping nickel strap in the welded condition sketch map of battery aluminium pole ears when welding for the welding method between utilization a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap;
Among the figure, 1 is nickel strap, and 2 is anodal aluminium pole ears, and 11 is the folding part, and 12 is weld part, and 13 is breach, and 14 is to crease line, and 15 is pad, and 20 is jig.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Referring to Fig. 1 to Fig. 4; The invention provides the welding method between a kind of lithium ion cell positive aluminium pole ears and the nickel strap; Said lithium ion battery comprises anodal aluminium pole ears 2, and said nickel strap 1 is L shaped nickel strap, and said nickel strap 1 includes folding part 11 and weld part 12; Said folding part 11 is positioned at said weld part 12 left end tops, and this method may further comprise the steps:
Step S101: at first with folding part 11 bendings of nickel strap 1, it is overlapping to be alignd with weld part 12 in folding part 11 then, referring to Fig. 3, shown in Figure 4;
Step S102: anodal aluminium pole ears 2 to be welded is inserted between said nickel strap 1 folding part 11 and weld part 12 these two-layer nickel straps after the bending; And said nickel strap 1 and anodal aluminium pole ears 2 alignment are lumped together; Thereby guarantee that nickel strap 1 is good with anodal aluminium pole ears 2 parcels; Welding position contact simultaneously is good, referring to Fig. 3, shown in Figure 4;
Step S103: the anodal aluminium pole ears said to be welded 2 and the said nickel strap 1 that will lump together then carries out level and flattens;
Step S104: after pressing; Use resistance welding equipment that said anodal aluminium pole ears to be welded 2 is carried out welding operation with said nickel strap 1; Final generate the anodal aluminium pole ears (promptly having formed the nickel lug) that nickel strap 1 is gone up in fixing welding, convenient follow-up proceeding connects operation with the soldering between the equipment such as the anode ear of lithium battery and circuit board.
In the present invention; The nickel sheet punching that said nickel strap 1 is L shaped shape; Be specially and use the nickel strap processing and fabricating of 0.075mm thickness to form; And said nickel strap 1 is for having the nickel strap of matte surface, and the connecting portion right ends has semicircular breach 13 between said folding part 11 and the weld part 12, has one to crease line 14 between said two breach 12.Chamfering is opened in each bending place of said nickel strap 1, guarantees that crooked place is definite and is convenient to operation, and outside wedge angle partly carries out fillet to be handled, protection battery outward appearance.Carry out surperficial frosted before the punching of nickel sheet and handle, the anaerobic packing is carried out in the finished product punching, and to guarantee the good excellent contact performance during with welding of whole nickel sheet electric conductivity, welding energy is in the welding position in the active set.
In the present invention, for step S101, on concrete the realization, said nickel strap 1 is for carry out anaerobic packing and nickel strap before the deadline in advance, and the cleaning surfaces of said nickel strap 1 is pollution-free, to guarantee follow-up welding effect.
In the present invention, for step S101, on concrete the realization, along folding part 11 bendings of breach 13 nickel straps 1 of connecting portion between said folding part 11 and the weld part 12.
In the present invention; Said step S103 is specially: the anodal aluminium pole ears said to be welded 2 and the said nickel strap 1 that will lump together are placed on the horizontal plane; Through pressing plate said anodal aluminium pole ears to be welded 2 is carried out downward extruding with said nickel strap 1 then, be driven plain with said nickel strap 1 up to said anodal aluminium pole ears to be welded 2.Pressing operation through step S103 can prevent the said anodal aluminium pole ears to be welded and the slight perk and the injustice of said nickel strap 1, guarantees well contact between nickel strap and the anodal aluminium pole ears to be welded.
In the present invention, said resistance welding equipment can be equipment such as mash welder, projection welder, seam welder and butt welding machine, and on concrete the realization, the present invention is preferably mash welder, and the employed capillary of said mash welder is preferably the capillary that diameter is 0.75mm.
Therefore; For step S104; In the lump referring to Fig. 4; Use mash welder that the welding operation that said anodal aluminium pole ears to be welded and said nickel strap 1 carry out is specially: said folding part 11 and the weld part 12 overlapping position that aligns is arranged at intervals with two pads 15, use mash welder earlier will said anodal aluminium pole ears to be welded and said nickel strap 1 weld one of them pad 15 point, then after shift position (promptly behind the segment distance); Continue another pad 15 points of welding, carry out two means of spot welds and fix.
Referring to Fig. 3, Fig. 4, on concrete the realization, the specific operation process of welding method provided by the invention can be following:
At first, carry out the nickel strap inspection, whether anaerobic is packed also before the deadline surface no-pollution;
Then, on jig 20, carry out the operation of nickel strap parcel, at first nickel strap is alignd with anodal aluminium pole ears,, anodal aluminium pole ears is wrapped in the centre of nickel strap then along two breach 13 bendings;
Then, use pressing plate to flatten, prevent slight perk and injustice, guarantee well contact between nickel strap and the aluminium pole ears;
Then, use resistance welding equipment to weld, a bit, the shift position is welded another point more then below welding earlier in the time of spot weld operation, and the final welding operation is accomplished.
Therefore, for the welding method between a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap, it has following advantage:
1, weld strength is big; On welding material processing and welding implementation method, has the effect of good preventing failure welding; And common means of spot welds mode has higher rosin joint to connect and cross the welding phenomena generation; These all will cause properties of product bad, and welding method provided by the invention has effectively been avoided these bad phenomenon, can guarantee firm welding property;
2, excellent electric performance, full contact between anodal aluminium pole ears among the present invention and the nickel strap, effectively contact area is big, possesses excellent electric performance;
3, easy and simple to handle, welding method provided by the invention simple to operate is convenient to commercial production and used;
4, with low cost, welding method provided by the invention does not need special welding equipment, helps commercial production.
In sum, compared with prior art, the welding method between a kind of lithium ion cell positive aluminium pole ears provided by the invention and the nickel strap; It can be effectively, reliably anodal aluminium pole ears is welded with nickel strap mutually; Thereby convenient continue and equipment such as circuit board between carry out soldering and connect operation, and simple to operate, can guarantee the whole serviceability of lithium ion battery; Be applicable to large-scale production application, be of great practical significance.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. the welding method between lithium ion cell positive aluminium pole ears and the nickel strap is characterized in that said nickel strap includes folding part and weld part, comprises step:
At first, align the folding part overlapping with weld part then with the folding part bending of nickel strap;
Anodal aluminium pole ears to be welded is inserted between the said nickel strap folding part and this two-layer nickel strap of weld part after the bending, and said nickel strap and the alignment of anodal aluminium pole ears are lumped together;
Anodal aluminium pole ears said to be welded that will lump together then and said nickel strap carry out level and flatten;
After pressing, use resistance welding equipment that said anodal aluminium pole ears to be welded and said nickel strap are carried out welding operation, the final generation fixed the anodal aluminium pole ears that nickel strap is gone up in welding.
2. welding method as claimed in claim 1 is characterized in that, said nickel strap is L shaped nickel strap.
3. welding method as claimed in claim 2 is characterized in that, said folding part is positioned at said weld part left end top.
4. welding method as claimed in claim 3 is characterized in that the connecting portion right ends has semicircular breach between said folding part and the weld part, has one to crease line between said two breach.
5. welding method as claimed in claim 1 is characterized in that, said nickel strap is the nickel strap with matte surface.
6. welding method as claimed in claim 1 is characterized in that, said resistance welding equipment is a mash welder.
7. welding method as claimed in claim 1; It is characterized in that; Said use resistance welding equipment is specially the step that said anodal aluminium pole ears to be welded and said nickel strap carry out welding operation: be arranged at intervals with two pads at said folding part and the weld part overlapping position that aligns; Use the mash welder earlier will said anodal aluminium pole ears to be welded and one of them pad of said nickel strap welding, weld another pad point in mobile continued then, realize that finally two means of spot welds fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104052317A CN102489857A (en) | 2011-12-08 | 2011-12-08 | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104052317A CN102489857A (en) | 2011-12-08 | 2011-12-08 | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102489857A true CN102489857A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104052317A Pending CN102489857A (en) | 2011-12-08 | 2011-12-08 | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140032A (en) * | 2013-02-04 | 2013-06-05 | 山东润峰集团新能源科技有限公司 | Battery pack series-parallel PCB board with pseudo tabs |
| CN105406106A (en) * | 2015-12-28 | 2016-03-16 | 天津力神特种电源科技股份公司 | Polymer lithium ion battery |
| CN107775165A (en) * | 2016-08-31 | 2018-03-09 | 上海拜骋电器有限公司 | Welding method and device for lithium battery |
| CN109494496A (en) * | 2017-09-13 | 2019-03-19 | 河北银隆新能源有限公司 | Be flexible coupling piece and its square housing battery |
| CN115000640A (en) * | 2018-07-05 | 2022-09-02 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10146679A (en) * | 1996-11-13 | 1998-06-02 | Denso Corp | Electric resistance welding method for different kinds of materials |
| CN1394362A (en) * | 2000-11-01 | 2003-01-29 | 索尼株式会社 | Cell, cell production method, welded article production method and pedestal |
| JP2008243719A (en) * | 2007-03-28 | 2008-10-09 | Sanyo Electric Co Ltd | Battery |
| CN201556658U (en) * | 2009-07-23 | 2010-08-18 | 东莞新能源科技有限公司 | Lithium ion battery anode adapter structure |
| CN201796991U (en) * | 2010-08-31 | 2011-04-13 | 福建师范大学 | Integral positive pole piece containing plating lug |
-
2011
- 2011-12-08 CN CN2011104052317A patent/CN102489857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10146679A (en) * | 1996-11-13 | 1998-06-02 | Denso Corp | Electric resistance welding method for different kinds of materials |
| CN1394362A (en) * | 2000-11-01 | 2003-01-29 | 索尼株式会社 | Cell, cell production method, welded article production method and pedestal |
| JP2008243719A (en) * | 2007-03-28 | 2008-10-09 | Sanyo Electric Co Ltd | Battery |
| CN201556658U (en) * | 2009-07-23 | 2010-08-18 | 东莞新能源科技有限公司 | Lithium ion battery anode adapter structure |
| CN201796991U (en) * | 2010-08-31 | 2011-04-13 | 福建师范大学 | Integral positive pole piece containing plating lug |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140032A (en) * | 2013-02-04 | 2013-06-05 | 山东润峰集团新能源科技有限公司 | Battery pack series-parallel PCB board with pseudo tabs |
| CN103140032B (en) * | 2013-02-04 | 2015-08-19 | 山东润峰集团新能源科技有限公司 | Battery pack series-parallel PCB board with pseudo tabs |
| CN105406106A (en) * | 2015-12-28 | 2016-03-16 | 天津力神特种电源科技股份公司 | Polymer lithium ion battery |
| CN107775165A (en) * | 2016-08-31 | 2018-03-09 | 上海拜骋电器有限公司 | Welding method and device for lithium battery |
| CN109494496A (en) * | 2017-09-13 | 2019-03-19 | 河北银隆新能源有限公司 | Be flexible coupling piece and its square housing battery |
| CN115000640A (en) * | 2018-07-05 | 2022-09-02 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
| CN115000640B (en) * | 2018-07-05 | 2024-03-26 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
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Application publication date: 20120613 |