CN105742721A - High-energy-ratio low-internal-resistance cylindrical lithium ion battery - Google Patents
High-energy-ratio low-internal-resistance cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN105742721A CN105742721A CN201610268228.8A CN201610268228A CN105742721A CN 105742721 A CN105742721 A CN 105742721A CN 201610268228 A CN201610268228 A CN 201610268228A CN 105742721 A CN105742721 A CN 105742721A
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- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- negative plate
- positive plate
- cylindrical lithium
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a high-energy-ratio low-internal-resistance cylindrical lithium ion battery. The lithium ion battery comprises a cell, wherein the cell comprises a positive plate, a negative plate, an inner diaphragm and an outer diaphragm; the blank foil regions, used as conductive tabs, on the positive plate and the negative plate are positioned at the two ends of the cell respectively; the inner diaphragm, a material-coating region of the negative plate, the outer diaphragm, and a material-coating region of the positive plate are laminated and coiled in sequence to form the cell; and the two ends of the cell are ultrasonically kneaded to form full tabs. According to the high-energy-ratio low-internal-resistance cylindrical lithium ion battery provided by the invention, the positive electrode and the negative electrode take the blank foil regions of the positive plate and the negative plate as the conductive tabs; due to the full tab ultrasonic kneading design, the dense and compacted full tabs which can be subjected to subsequent laser welding conveniently are formed on the electrodes at the two ends of the cell; therefore, the internal resistance of the battery is greatly reduced, and the performance of the battery is improved; due to the coiling way, the efficiency of productivity is taken into consideration as well; and in addition, the lithium ion battery is simple in overall coiled cell design, excellent in electrical performance, high in productivity, and high in practicability.
Description
Technical field
The invention belongs to technical field of lithium batteries, particularly relate to the cylindrical lithium ion battery of a kind of high energy ratio, low internal resistance.
Background technology
At present, the core of cylindrical lithium ion battery is mainly the takeup type core of monopole ear or multi pole ears and stacked core.Although the takeup type core core of monopole ear or multi pole ears capacity efficiency when winding is high, but by core self lug number and area constraints, there is the electrical property aspect inferior positions such as mental retardation ratio, high internal resistance；Although stacked core has an advantage of the aspect of performances such as high energy ratio, low internal resistance, but when having that capacity efficiency is low, number of laminations increases, foil turns the problems such as welding electrode ear difficulty great Yi rosin joint.Therefore, it is necessary to develop a kind of cylindrical lithium ion battery taking into account the high energy ratio of core winding efficiency and battery electrical property, low internal resistance.
Summary of the invention
It is an object of the invention to provide the cylindrical lithium ion battery of a kind of high energy ratio, low internal resistance.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of high energy ratio, low internal resistance cylindrical lithium ion battery, including battery core, described battery core includes positive plate, negative plate, inner septum and outer barrier film, described positive plate and described negative plate lay respectively at the two ends of described battery core as the blank foil district of conduction lug, the dressing district of described inner septum, the dressing district of described negative plate, described outer barrier film and described positive plate fits successively and is wound into described battery core, and the full lug of flat formation is rubbed through ultrasonic respectively in the two ends of described battery core.
Preferably, the dressing district of described negative plate is positioned at the centre position of described inner septum, and the dressing district of described positive plate is positioned at the centre position of described outer barrier film.
Preferably, the width in the blank foil district of described positive plate is 2mm-10mm, and the width in the blank foil district of described negative plate is 2mm-10mm.
Preferably, 0.5mm-2mm is rubbed by ultrasonic square formula of rubbing by the two ends full lug of conduction of described battery core respectively in the blank foil district of described positive plate and the blank foil district of described negative plate.
Preferably, described battery core adopt determine diameter wind termination mode wind.
Compared with prior art, the invention has the beneficial effects as follows: a kind of high energy ratio of the present invention, low internal resistance the both positive and negative polarity of cylindrical lithium ion battery using the blank foil district of positive plate and negative plate as conduction lug, adopt the ultrasonic full lug rubbing the compact that flat design makes the electrode formation at battery core two ends be easy to post laser welding of full lug, greatly reduce the internal resistance of battery, improve the performance of battery, adopt winding method, take into account capacity efficiency；Whole core design is simple, and electrical property is good, and productivity is high, practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
Embodiment:
As shown in Figure 1, a kind of high energy ratio of the present embodiment, low internal resistance cylindrical lithium ion battery, including battery core, battery core includes positive plate 1, negative plate 2, inner septum 3 and outer barrier film 4, laying respectively at the two ends of battery core as the blank foil district 11 and 21 of conduction lug on positive plate 1 and negative plate 2, the employing of fit successively of the dressing district 12 of inner septum 3, the dressing district 22 of negative plate 2, outer barrier film 4 and positive plate 1 is determined diameter and is wound termination mode and be wound into battery core.The width in the blank foil district 11 of positive plate 1 is 2mm-10mm.The width in the blank foil district 21 of negative plate 2 is 2mm-10mm.The two ends of battery core flat make the blank foil district 11 of positive plate 1 and the blank foil district 21 of negative plate 2 rub 0.5mm-2mm respectively to form full lug through ultrasonic rubbing respectively.The dressing district 22 of negative plate 2 is positioned at the centre position of inner septum 3, and the dressing district 12 of positive plate 1 is positioned at the centre position of outer barrier film 4.
During application the present embodiment, positive plate 1 and negative plate 2 adopt continuous coating, dressing district 12 and 22 respectively to stay at two ends the blank foil of convenient width, toasted, roll, cut into front end and stay the blank foil district 11 and 21 of 2mm-10mm.Adjust up-coiler, negative plate 2 is added after first pre-roll 2 circle of inner septum 3, the dressing district 22 of negative plate 2 is placed in the middle of inner septum 3, the blank foil district 21 of negative plate 2 extends along the left side of the width of inner septum 3, inner septum 3, positive plate 1 is added after outer barrier film 4 and negative plate 2 one roll set 1.5 circle, the dressing district 12 of positive plate 1 is placed in the middle of outer barrier film 4, the blank foil district 11 of positive plate 1 extends along the right side of the width of outer barrier film 4, with negative plate 2, inner septum 3, outer barrier film 4 winds together, last terminate winding determining diameter mode, cut off barrier film and electrode plates, again by the blank foil district 11 and 21 at the two ends of battery core by ultrasonic rub to divide equally do not rub 0.5mm-2mm and form full lug, high energy ratio can be obtained, the cylindrical lithium ion battery of low internal resistance.Negative plate 2 is for the negative pole of battery, when battery electrical property is tested between its layer of charcoal of lithium ion deintercalation, inner septum 3 and outer barrier film 4 are used for isolating positive and negative electrode and prevent battery internal short-circuit, and positive plate 1 is for the positive pole of battery, when battery electrical property is tested between the main material such as its LiFePO4 of the deintercalation of lithium ion.
A kind of high energy ratio of the present embodiment, low internal resistance the both positive and negative polarity of cylindrical lithium ion battery using the blank foil district 11 and 21 of positive plate 1 and negative plate 2 as conduction lug, adopt the ultrasonic full lug rubbing the compact that flat design makes the electrode formation at battery core two ends be easy to post laser welding of full lug, greatly reduce the internal resistance of battery, improve the performance of battery, adopt winding method, take into account capacity efficiency；Whole core design is simple, and electrical property is good, and productivity is high, practical.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (5)
1. the cylindrical lithium ion battery of a high energy ratio, low internal resistance, including battery core, it is characterized in that: described battery core includes positive plate, negative plate, inner septum and outer barrier film, described positive plate and described negative plate lay respectively at the two ends of described battery core as the blank foil district of conduction lug, the dressing district of described inner septum, the dressing district of described negative plate, described outer barrier film and described positive plate fits successively and is wound into described battery core, and the full lug of flat formation is rubbed through ultrasonic respectively in the two ends of described battery core.
2. the cylindrical lithium ion battery of a kind of high energy ratio according to claim 1, low internal resistance, it is characterised in that: the dressing district of described negative plate is positioned at the centre position of described inner septum, and the dressing district of described positive plate is positioned at the centre position of described outer barrier film.
3. the cylindrical lithium ion battery of a kind of high energy ratio according to claim 1, low internal resistance, it is characterised in that: the width in the blank foil district of described positive plate is 2mm-10mm, and the width in the blank foil district of described negative plate is 2mm-10mm.
4. the cylindrical lithium ion battery of a kind of high energy ratio according to claim 3, low internal resistance, it is characterised in that: 0.5mm-2mm is rubbed by ultrasonic square formula of rubbing by the two ends full lug of conduction of described battery core respectively in the blank foil district of described positive plate and the blank foil district of described negative plate.
5. the cylindrical lithium ion battery of a kind of high energy ratio according to claim 1, low internal resistance, it is characterised in that: the employing of described battery core is determined diameter winding termination mode and is wound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268228.8A CN105742721A (en) | 2016-04-27 | 2016-04-27 | High-energy-ratio low-internal-resistance cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268228.8A CN105742721A (en) | 2016-04-27 | 2016-04-27 | High-energy-ratio low-internal-resistance cylindrical lithium ion battery |
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| CN105742721A true CN105742721A (en) | 2016-07-06 |
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| CN201610268228.8A Pending CN105742721A (en) | 2016-04-27 | 2016-04-27 | High-energy-ratio low-internal-resistance cylindrical lithium ion battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| CN108550896A (en) * | 2018-05-29 | 2018-09-18 | 江苏海基新能源股份有限公司 | A kind of full lug coiling column lithium ion battery assembly method |
| CN108808114A (en) * | 2018-05-29 | 2018-11-13 | 江苏海基新能源股份有限公司 | A kind of rectangular multi pole ears wound lithium-ion battery assembly method |
| CN110718665A (en) * | 2019-09-24 | 2020-01-21 | 国轩新能源(庐江)有限公司 | Lithium battery pole lug combined flattening method |
| CN111725552A (en) * | 2020-08-05 | 2020-09-29 | 广州鹏辉能源科技股份有限公司 | Button cell and manufacturing method thereof |
| CN113410528A (en) * | 2021-08-04 | 2021-09-17 | 深圳市信宇人科技股份有限公司 | Full-tab lithium battery and packaging preparation process thereof |
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| CN101312236A (en) * | 2007-05-22 | 2008-11-26 | 日立车辆能源株式会社 | Lithium-ion secondary battery |
| CN101517787A (en) * | 2006-09-19 | 2009-08-26 | 松下电器产业株式会社 | Method of producing electrode for secondary battery, and secondary battery |
| CN103633378A (en) * | 2013-12-04 | 2014-03-12 | 合肥国轩高科动力能源股份公司 | Coiled lithium battery and preparation method thereof |
| CN103779528A (en) * | 2014-01-15 | 2014-05-07 | 合肥国轩高科动力能源股份公司 | Assembly process of cylindrical lithium-ion cell |
| CN205646032U (en) * | 2016-04-27 | 2016-10-12 | 国轩新能源（苏州）有限公司 | High energy compares, cylindrical lithium ion battery of low internal resistance |
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2016
- 2016-04-27 CN CN201610268228.8A patent/CN105742721A/en active Pending
Patent Citations (5)
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| CN101517787A (en) * | 2006-09-19 | 2009-08-26 | 松下电器产业株式会社 | Method of producing electrode for secondary battery, and secondary battery |
| CN101312236A (en) * | 2007-05-22 | 2008-11-26 | 日立车辆能源株式会社 | Lithium-ion secondary battery |
| CN103633378A (en) * | 2013-12-04 | 2014-03-12 | 合肥国轩高科动力能源股份公司 | Coiled lithium battery and preparation method thereof |
| CN103779528A (en) * | 2014-01-15 | 2014-05-07 | 合肥国轩高科动力能源股份公司 | Assembly process of cylindrical lithium-ion cell |
| CN205646032U (en) * | 2016-04-27 | 2016-10-12 | 国轩新能源（苏州）有限公司 | High energy compares, cylindrical lithium ion battery of low internal resistance |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342440A (en) * | 2017-06-26 | 2017-11-10 | 合肥国轩高科动力能源有限公司 | A kind of high-power lithium ion battery core and preparation method thereof |
| CN108550896A (en) * | 2018-05-29 | 2018-09-18 | 江苏海基新能源股份有限公司 | A kind of full lug coiling column lithium ion battery assembly method |
| CN108808114A (en) * | 2018-05-29 | 2018-11-13 | 江苏海基新能源股份有限公司 | A kind of rectangular multi pole ears wound lithium-ion battery assembly method |
| CN110718665A (en) * | 2019-09-24 | 2020-01-21 | 国轩新能源(庐江)有限公司 | Lithium battery pole lug combined flattening method |
| CN111725552A (en) * | 2020-08-05 | 2020-09-29 | 广州鹏辉能源科技股份有限公司 | Button cell and manufacturing method thereof |
| CN113410528A (en) * | 2021-08-04 | 2021-09-17 | 深圳市信宇人科技股份有限公司 | Full-tab lithium battery and packaging preparation process thereof |
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Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |