CN100337346C - Rectangular lithium ion battery ear-pole and its making method, battery - Google Patents
Rectangular lithium ion battery ear-pole and its making method, battery Download PDFInfo
- Publication number
- CN100337346C CN100337346C CNB2005100207173A CN200510020717A CN100337346C CN 100337346 C CN100337346 C CN 100337346C CN B2005100207173 A CNB2005100207173 A CN B2005100207173A CN 200510020717 A CN200510020717 A CN 200510020717A CN 100337346 C CN100337346 C CN 100337346C
- Authority
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- China
- Prior art keywords
- section
- lithium ion
- pole ear
- cover plate
- pole
- Prior art date
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 description 10
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
Abstract
The present invention discloses a pole ear of square lithium ion battery and a manufacturing method thereof, wherein the pole ear of the square lithium ion battery is a strip-shaped pole ear of which the widths of both ends are different, a section near one end is wider, and a section near the other end is narrow. During manufacture, one end of the pole ear, which is used for being connected with a cover plate, is made to be wide enough, so that the pole ear can be conveniently connected with the cover plate in manner of electrical connection; the other end of the pole ear, which is used for being connected with a positive plate or a negative plate, is made to be narrow enough, so that a sheet of diaphragm paper can be prevented from being punctured by the pole ear when a battery core is manufactured, and the pole ear is convenient for the battery core to be packaged in a shell. Furthermore, the present invention also discloses a square lithium ion battery which comprises a pole piece, a strip-shaped pole ear and a cover plate, wherein the section of the strip-shaped pole ear near one end is wide, a section near the other end is narrow, and moreover, the wide section is connected with the cover plate, and the narrow section is connected with the pole piece. By adopting the technical scheme, the present invention has the advantages that the pole ear is firmly connected with the cover plate, so that the pole ear can not drop easily, and the occurrence of open circuit of the battery can be avoided; in addition, the diaphragm paper is not easy to be punctured by the pole ear, the battery core can be easily packaged in the shell, and as a result, the occurrence of the phenomenon of short circuit is reduced.
Description
[technical field]
The present invention relates to a kind of rectangular lithium ion battery ear-pole and lithium ion battery.
[background technology]
Lithium rechargeable battery because have the operating voltage height, outstanding features such as specific energy is big, self discharge is little, temperature limit is wide, stable operating voltage, storage life are long, countries in the world all illustrate great interest and enthusiasm to the application table of lithium rechargeable battery at aspects such as communication field, portable type electronic product, electric motor car and space flight and aviation, and have carried out continuous exploration and improvement at the performance and the manufacturing process of lithium rechargeable battery.
In present battery manufacturing process, all be that wide bar shaped lug is welded on the pole piece, carry out the coiling of electric core then, operations such as flattening, lug all is in the side of electric core body broad, when lug and cover plate are welded, because the bad control of length of lug, be easy to contact and cause short circuit with battery container, therefore, our company develops so a kind of battery, be the narrower side of the electric core body of lug (anode ear or negative electrode lug) behind coiling, overcome the shortcoming of above-mentioned battery, but also have following deficiency: 1) if the lug broad, carry out the coiling of electric core, flatten, when going into operations such as shell, because bending radius is limited, punctures the diaphragm paper that is positioned at lug dual-side edge easily, make the positive/negative plate contact cause short circuit; 2) if lug is narrower, increased welding or riveted joint difficulty between lug and the cover plate, cause welding easily or rivet insecurely, lug comes off easily, causes and opens circuit.
[summary of the invention]
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, propose a kind of rectangular lithium ion battery ear-pole, make it be difficult for puncturing diaphragm paper at the coiling that carries out electric core, when flattening, going into operations such as shell, again can with cover plate firm welding, difficult drop-off.
Further, the objective of the invention is to propose a kind of rectangular lithium ion battery that adopts above-mentioned lug.
The object of the present invention is achieved like this:
A kind of manufacture method of rectangular lithium ion battery ear-pole, it is characterized in that: an end that will be used for the lug that is connected with cover plate is done enough widely, it is electrically connected with cover plate easily, what will be used for that the other end of the lug that is connected with positive plate or negative plate does enough is narrow, makes it avoid puncturing diaphragm paper and be convenient to electric core when making electric core going into shell.
A kind of rectangular lithium ion battery ear-pole is the bar shaped lug, and the width difference at the two ends of described bar shaped lug is near one section broad of an end, near a section narrower of other end.
A kind of rectangular lithium ion battery comprises pole piece, bar shaped lug and cover plate, one section broad near an end of described bar shaped lug, and near one section narrower of the other end, one section of broad connects cover plate, and narrower one section connects pole piece.
Further, described bar shaped lug by separately wide two sections form, one section broad, another section is narrower, is connected as a single entity between two sections.
The present invention is owing to be designed to lug one section broad of a close end, near a section narrower of other end, its beneficial effect is: an end that 1) will be used for the lug that is connected with cover plate is done enough widely, one section with broad is used for welding or riveting with cover plate, make between the two welding or the easier operation of riveted joint, thereby connect more firm.2) owing to be connected firmly between lug and the cover plate, make the lug difficult drop-off, can prevent effectively that battery from opening circuit.3) owing to be connected firmly between lug and the cover plate, make to contact well between lug and the cover plate, can significantly reduce the possibility that causes internal resistance of cell drift because of not prison welding, guaranteed the stability of internal resistance.What 4) will be used for that the other end of the lug that is connected with positive plate or negative plate does enough is narrow, makes it at the coiling that carries out electric core, when flattening, going into operation such as shell, because this section lug is narrower, can reduce the possibility that lug punctures diaphragm paper greatly.5) because narrower with this section lug of pole piece welding, shared locus when further having reduced to go into shell, it is easier to make that electric core is gone into shell, has reduced the possibility of the phenomenon that is short-circuited.
The present invention is described in detail below in conjunction with accompanying drawing:
[description of drawings]
Fig. 1 is a kind of structural representation of rectangular lithium ion battery ear-pole.
Fig. 2 is a kind of structural representation of rectangular lithium ion battery.
[embodiment]
The manufacture method of embodiment one, a kind of rectangular lithium ion battery ear-pole and rectangular lithium ion battery ear-pole, one end that will be used for the lug that is connected with cover plate is done enough widely, it is electrically connected with cover plate easily, what will be used for that the other end of the lug that is connected with positive plate or negative plate does enough is narrow, makes it avoid puncturing diaphragm paper and be convenient to electric core when making electric core going into shell.As shown in Figure 1, rectangular lithium ion battery ear-pole is a bar shaped lug 1, and bar shaped lug 1 is made up of section 2 and section 3, and section 2 broads of the close upper end of bar shaped lug are narrower near the section 3 of lower end, and respectively do for oneself wide section 2 and section 3 are connected as a single entity.
Embodiment two, 1000 models of manufacturing are the square box hat lithium ion battery electricity core body of 033448S, as depicted in figs. 1 and 2, comprise electric core body 5, positive pole ear 1, negative lug 6 and cover plate 4, the structure of anode ear 1 bar shaped lug as shown in Figure 1, the upper wider section 2 of positive pole ear 1 and cover plate 4 welding or riveted joint, section 3 that the bottom of positive pole ear 1 is narrower and positive plate weld and are positioned at the narrower side of electric core body 5, and negative lug 6 is welded on the negative plate (not label) of electric core body 5.Production method obtains lithium ion battery routinely then, is made as group 1, measures its short circuit ratio.
Adopt the lithium ion battery of wide lug, be made as group 2, measure its short circuit ratio with same 1000 equal models of method manufacturing.
Table 1 short circuit ratio relatively
As can be seen from Table 1, the lithium ion battery that utilizes lug of the present invention to make, short circuit ratio obviously reduces than the equal lithium ion battery short circuit ratio with wide lug manufacturing, this be because and positive plate welding be narrower one section of anode ear, when electric core body being flattened, going into operation such as shell, the lug edge need not be crooked, therefore is difficult for the broken diaphragm paper of card, and it is easy that electric core is gone into shell, reduced short circuit ratio.
Simultaneously, utilize lug of the present invention to make battery, because the lug broad that is connected with cover plate, the firm welding between lug and the cover plate, difficult drop-off; And contact well between lug and cover plate and the pole piece, guaranteed internal resistance of cell stability.
Must be pointed out, above-mentionedly just illustrate, can not limit protection scope of the present invention in view of the above.For industry technical staff, also have various variations and remodeling, as long as these change and modification does not break away from the scope of the invention, they include in claimed scope of the present invention.As: above-mentioned section 2 and section also can be provided with the interim form of different in width or curve shape etc. between 3.
Claims (6)
1, a kind of rectangular lithium ion battery ear-pole is the bar shaped lug, it is characterized in that: described bar shaped lug is formed by two sections, one section broad, another section is narrower, is connected as a single entity between two sections, one section of broad is used for being connected with cover plate, and narrower one section is used for being connected with positive plate or negative plate.
2, rectangular lithium ion battery ear-pole as claimed in claim 1 is characterized in that: described bar shaped lug by separately wide two sections form, one section broad, another section is narrower, is connected as a single entity between two sections.
3, rectangular lithium ion battery ear-pole as claimed in claim 1 or 2 is characterized in that: described lug is positioned at the narrower side of lithium-ion electric core body.
4, a kind of rectangular lithium ion battery, comprise pole piece, bar shaped lug and cover plate, it is characterized in that: described bar shaped lug is formed by two sections, one section broad, another section is narrower, be connected as a single entity between two sections, one section of broad is used for being connected with cover plate, and narrower one section is used for being connected with positive plate or negative plate.
5, rectangular lithium ion battery as claimed in claim 4 is characterized in that: described bar shaped lug by separately wide two sections form, one section broad, another section is narrower, is connected as a single entity between two sections.
6, a kind of manufacture method of rectangular lithium ion battery ear-pole, it is characterized in that: an end that will be used for the lug that is connected with cover plate is done enough widely, it is electrically connected with cover plate easily, what will be used for that the other end of the lug that is connected with positive plate or negative plate does enough is narrow, makes it avoid puncturing diaphragm paper and be convenient to electric core when making electric core going into shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100207173A CN100337346C (en) | 2005-04-11 | 2005-04-11 | Rectangular lithium ion battery ear-pole and its making method, battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100207173A CN100337346C (en) | 2005-04-11 | 2005-04-11 | Rectangular lithium ion battery ear-pole and its making method, battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1770506A CN1770506A (en) | 2006-05-10 |
| CN100337346C true CN100337346C (en) | 2007-09-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100207173A Active CN100337346C (en) | 2005-04-11 | 2005-04-11 | Rectangular lithium ion battery ear-pole and its making method, battery |
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| Country | Link |
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| CN (1) | CN100337346C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509301B (en) * | 2020-05-26 | 2021-11-19 | 苏州凌威新能源科技有限公司 | Short-circuit battery processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002008625A (en) * | 2000-06-27 | 2002-01-11 | Shin Kobe Electric Mach Co Ltd | Lead-acid battery |
| JP2002025534A (en) * | 2000-07-03 | 2002-01-25 | Yuasa Corp | Forming method of strap of electrode plate group for lead-acid battery |
| CN1381912A (en) * | 2001-12-27 | 2002-11-27 | 深圳市雄韬电源科技有限公司 | Technology for connecting plate electrode of battery with its leading-out lug and its product |
| CN1444303A (en) * | 2002-03-08 | 2003-09-24 | 居永明 | Repeatedly chargeable-dischargeable lithium ion power cell and its production method |
| CN2582186Y (en) * | 2002-12-06 | 2003-10-22 | 东莞新能源电子科技有限公司 | Safety polymer lithium ion cell |
| CN2686105Y (en) * | 2003-03-04 | 2005-03-16 | 河南环宇集团有限公司 | Power battery current-collecting connecting structure |
-
2005
- 2005-04-11 CN CNB2005100207173A patent/CN100337346C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002008625A (en) * | 2000-06-27 | 2002-01-11 | Shin Kobe Electric Mach Co Ltd | Lead-acid battery |
| JP2002025534A (en) * | 2000-07-03 | 2002-01-25 | Yuasa Corp | Forming method of strap of electrode plate group for lead-acid battery |
| CN1381912A (en) * | 2001-12-27 | 2002-11-27 | 深圳市雄韬电源科技有限公司 | Technology for connecting plate electrode of battery with its leading-out lug and its product |
| CN1444303A (en) * | 2002-03-08 | 2003-09-24 | 居永明 | Repeatedly chargeable-dischargeable lithium ion power cell and its production method |
| CN2582186Y (en) * | 2002-12-06 | 2003-10-22 | 东莞新能源电子科技有限公司 | Safety polymer lithium ion cell |
| CN2686105Y (en) * | 2003-03-04 | 2005-03-16 | 河南环宇集团有限公司 | Power battery current-collecting connecting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1770506A (en) | 2006-05-10 |
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Effective date of registration: 20160519 Address after: An Zhen Zhongmu County 450000 Henan city of Zhengzhou Province Liu Zheng Qiao Village Patentee after: ZHENGZHOU BAK 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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Effective date of registration: 20191022 Granted publication date: 20070912 |
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Date of cancellation: 20221022 Granted publication date: 20070912 |
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