CN101209507B - Copper strip welding method and lithium cell adopting the copper polar ear - Google Patents
Copper strip welding method and lithium cell adopting the copper polar ear Download PDFInfo
- Publication number
- CN101209507B CN101209507B CN200610064570A CN200610064570A CN101209507B CN 101209507 B CN101209507 B CN 101209507B CN 200610064570 A CN200610064570 A CN 200610064570A CN 200610064570 A CN200610064570 A CN 200610064570A CN 101209507 B CN101209507 B CN 101209507B
- Authority
- CN
- China
- Prior art keywords
- plate
- copper
- polar ear
- lithium battery
- pressing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 51
- 239000010949 copper Substances 0.000 title claims abstract description 51
- 238000003466 welding Methods 0.000 title claims abstract description 40
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 26
- 239000012212 insulator Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 3
- 208000007442 rickets Diseases 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a lithium battery adopting a copper tab, which comprises a battery cover assembly and a cell unit. The battery cover assembly comprises a pressure plate, a cover plate, a connecting member and a sealing insulation member. The pressure plate is positioned on the inner side of the cover plate and the sealing insulation member is positioned between the cover plate and the pressure plate for the insulating isolation therebetween. The positive plate and the negative plate of the cell unit are respectively connected with a positive tab and a negative tab. At least one of the positive tab and the negative tab is a copper tab. The lithium battery also comprises a nickel sheet and a pressure plate positioned on the inner side of the cover plate. One copper tab and the positioned are sequentially overlapped with each other and then are welded together through spot welding. According to the invention, copper strips can be conveniently welded and the rickets problem when the copper tab is welded with a pressure plate is solved. Meanwhile, the production cost of the lithium battery is reduced.
Description
Technical field
The present invention relates to the welding method of copper strips, particularly the lithium battery of the welding method of copper polar ear and employing copper polar ear in the lithium battery.
Background technology
Because copper has good electrical conductivity, has been widely used in various electricity consumptions place.But, because there is the shortcoming be difficult to weld in copper, this to a great extent limit its application.For example, lithium battery is a kind of big capacity, high-power battery, has been widely used on the various mini-plants, particularly mobile phone, laptop computer, portable power tool etc.As shown in Figure 1, lithium ion battery is generally formed by battery cover board assembly, battery container, electrolyte and by the battery unit that positive and negative plate and diaphragm paper are wound into.The structure of battery cover board assembly comprises pressing plate 1, connector 2, cover plate 5 and sealing insulator 3, and cover plate 5 is provided with liquid injection hole 6.Pressing plate 1 is positioned at the side of cover plate assembly towards enclosure interior; Connector 2 one ends and pressing plate 1 are electrical connected; The other end runs through the outside that cover plate 5 is positioned at cover plate assembly; Sealing insulator 3 is used for insulation cover plate 5 and connector 2 and pressing plate 1, and the position of simultaneously cover plate 5 upper connectors 2 being run through seals, and battery unit 7 electrically connects through lug 7 and pressing plate 1.If consider from the angle of electric conductivity and manufacturing cost, it should be first-selected that lug 7 adopts copper polar ear.But regrettably, because copper polar ear is difficult to welding, the rare metal nickel strap that generally adopts resource scarcity at present in the industry causes production cost higher as lug 7.
Summary of the invention
The object of the invention is intended to overcome the deficiency of above-mentioned prior art, a kind of method of can be easily copper strips being welded and the method that in lithium battery, also can adopt copper polar ear and pressing plate to weld easily is provided, to reduce the production cost of lithium battery.
Realize the technical scheme of above-mentioned purpose:
A kind of welding method of copper strips comprises the steps:
The first step: copper strips to be welded is placed on the metalwork that will be soldered;
Second step: on copper strips to be welded, place a nickel strap again;
The 3rd step: adopt spot-welding equipment that nickel strap is carried out spot welding, thereby nickel strap, copper strips and the metalwork that will be soldered are welded together.
Welding current 100～the 150KA of said spot welding, weld interval are 1～3ms.
Further, also comprise the step that unnecessary nickel strap is cut off at weld.
Further, the said metalwork that is soldered is the nickel plate.
Further, the said metalwork that is soldered is the electrical conductivity alloy plate.
The welding method of copper polar ear comprises the steps: in a kind of lithium battery
The first step: copper polar ear to be welded is placed on the pressing plate that will be soldered;
Second step: on copper polar ear to be welded, place a nickel strap again;
The 3rd step: adopt spot-welding equipment that nickel strap is carried out spot welding, thereby nickel strap, copper polar ear and the pressing plate that will be soldered are welded together.
Welding current 100～the 150KA of said spot welding, weld interval are 1～3ms.
Further, also comprise the step that unnecessary nickel strap is cut off at weld.
Further, the said pressing plate that is soldered is the nickel plate.
Further, the said pressing plate that is soldered is the electrical conductivity alloy plate.
A kind of lithium battery that uses copper polar ear; Comprise battery cover board assembly, electric core unit and nickel strap; Wherein battery cover board assembly comprises pressing plate, cover plate, connector and sealing insulator; Said pressing plate is positioned at the inboard of cover plate, and said sealing insulator is between cover plate and pressing plate and to they isolation of insulating, and said electric core unit is connected with anode ear and negative electrode lug; At least one is a copper polar ear in anode ear and the negative electrode lug, is positioned at cover plate inboard pressing plate, one of them copper polar ear and nickel strap and is docile and obedient the mode of the overlapping back of preface through spot welding and welds together.
Welding current 100～the 150KA of said spot welding, weld interval are 1～3ms.
Further, before said spot welding, earlier nickel sheet and connector are riveted together.
Further, described pressing plate is the nickel plate.
Beneficial technical effects of the present invention is:
1) do not receive any theoretic restriction, the inventor proves through repetition test many times, as long as on copper strips, place nickel strap, directly at the enterprising spot welding of nickel strap, can dexterously copper strips and the metalwork that is soldered be welded together securely.
2) in lithium battery,, can dexterously copper polar ear and pressing plate be welded together securely through the nickel sheet being set on copper polar ear and adopting the mode of spot welding; Thereby replaced expensive nickel lug with copper polar ear; Reduce production cost, and can also the nickel sheet have been cut after the welding, practiced thrift resource.
3) not only production process is simple to adopt copper polar ear, but also can improve the cycle performance of lithium battery.
Description of drawings
Fig. 1 is a kind of structural representation of existing lithium battery.
Fig. 2 is structure (analysing and observe) enlarged drawing of Fig. 1 cover plate assembly.
Fig. 3 is a kind of flow chart of welding method of copper strips.
Fig. 4 is a kind of battery structure sketch map that uses copper polar ear of the present invention.
Fig. 5 is structure (analysing and observe) enlarged drawing of Fig. 4 cover plate assembly.
The specific embodiment
The welding method of embodiment 1, a kind of copper strips, as shown in Figure 3, comprise the steps:
The first step: copper strips to be welded is placed on the conducting metal spare that will be soldered;
Second step: on copper strips to be welded, place a nickel strap again;
The 3rd step: adopt spot-welding equipment that nickel strap is carried out spot welding; Nickel strap, copper strips and the metalwork that will be soldered are welded together; Wherein welding current 100～150KA, weld interval and the pulsewidth of spot welding are 1～3ms, and preferred: welding current 115～135KA, weld interval and pulsewidth are 1.5～2.5ms.
The 4th step: unnecessary nickel strap is cut off at weld.
Further, as required, before spot welding, weld again after also can be earlier nickel sheet and connector 2 being riveted together.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to the scope of patent protection that the present invention is confirmed by claims of being submitted to.
Claims (4)
1. lithium battery that uses copper polar ear; Comprise battery cover board assembly and electric core unit; Wherein battery cover board assembly comprises pressing plate, cover plate, connector and sealing insulator, and said pressing plate is positioned at the inboard of cover plate, and said sealing insulator is between cover plate and pressing plate and to they isolation of insulating; The positive plate of said electric core unit and negative plate correspondence respectively are connected with anode ear and negative electrode lug; At least one is a copper polar ear in anode ear and the negative electrode lug, it is characterized in that: also comprise the nickel sheet, be positioned at cover plate inboard pressing plate, one of them copper polar ear and nickel sheet and be docile and obedient the mode of the overlapping back of preface through spot welding and weld together.
2. according to the lithium battery of the said use copper polar ear of claim 1, it is characterized in that: the welding current 100～150KA of said spot welding, weld interval are 1～3ms.
3. according to the lithium battery of the said use copper polar ear of claim 1, it is characterized in that: before said spot welding, earlier nickel sheet and connector are riveted together.
4. according to the lithium battery of any said use copper polar ear of claim 1～3, it is characterized in that: described pressing plate is the nickel plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610064570A CN101209507B (en) | 2006-12-28 | 2006-12-28 | Copper strip welding method and lithium cell adopting the copper polar ear |
| HK08113346.6A HK1120465A1 (en) | 2006-12-28 | 2008-12-09 | Lithium battery with copper tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610064570A CN101209507B (en) | 2006-12-28 | 2006-12-28 | Copper strip welding method and lithium cell adopting the copper polar ear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101209507A CN101209507A (en) | 2008-07-02 |
| CN101209507B true CN101209507B (en) | 2012-10-17 |
Family
ID=39609860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610064570A Expired - Fee Related CN101209507B (en) | 2006-12-28 | 2006-12-28 | Copper strip welding method and lithium cell adopting the copper polar ear |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101209507B (en) |
| HK (1) | HK1120465A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059438B (en) * | 2010-11-17 | 2013-02-13 | 周俊雄 | Affluence column welding device of lithium battery |
| CN108172748A (en) * | 2017-12-30 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | Lug and manufacturing method, the lithium battery and manufacturing method with the lug |
| CN109473617A (en) * | 2018-10-30 | 2019-03-15 | 珠海鹏辉能源有限公司 | A kind of welding structure and its welding procedure of rectangular lithium ion battery ear-pole and pole |
| WO2023092441A1 (en) * | 2021-11-26 | 2023-06-01 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and device therefor, battery, and electrical device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722493A (en) * | 2004-07-14 | 2006-01-18 | 谢振华 | Ear-pole of battery inner and electric sheet metal between batteries and processing method |
| CN1805174A (en) * | 2005-01-14 | 2006-07-19 | 谢振华 | Method of processing electrode lugs in cell or conductive metal plates between cells |
| CN201017924Y (en) * | 2006-12-28 | 2008-02-06 | 深圳市比克电池有限公司 | Lithium battery using copper pole ear |
| CN101383406A (en) * | 2007-09-06 | 2009-03-11 | 深圳市比克电池有限公司 | Battery lead wire and manufacturing method |
-
2006
- 2006-12-28 CN CN200610064570A patent/CN101209507B/en not_active Expired - Fee Related
-
2008
- 2008-12-09 HK HK08113346.6A patent/HK1120465A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722493A (en) * | 2004-07-14 | 2006-01-18 | 谢振华 | Ear-pole of battery inner and electric sheet metal between batteries and processing method |
| CN1805174A (en) * | 2005-01-14 | 2006-07-19 | 谢振华 | Method of processing electrode lugs in cell or conductive metal plates between cells |
| CN201017924Y (en) * | 2006-12-28 | 2008-02-06 | 深圳市比克电池有限公司 | Lithium battery using copper pole ear |
| CN101383406A (en) * | 2007-09-06 | 2009-03-11 | 深圳市比克电池有限公司 | Battery lead wire and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101209507A (en) | 2008-07-02 |
| HK1120465A1 (en) | 2009-04-03 |
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Effective date of registration: 20160912 Address after: An Zhen Zhongmu County 451470 Henan city of Zhengzhou Province Liu Zheng Qiao Village Patentee after: ZHENGZHOU BIKE BATTERY CO., LTD. Address before: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: Shenzhen Bak Battery Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20121017 Termination date: 20181228 |