CN103579669B - A kind of high-capacity cylindrical or rectangular lithium ion battery - Google Patents
A kind of high-capacity cylindrical or rectangular lithium ion battery Download PDFInfo
- Publication number
- CN103579669B CN103579669B CN201310598505.8A CN201310598505A CN103579669B CN 103579669 B CN103579669 B CN 103579669B CN 201310598505 A CN201310598505 A CN 201310598505A CN 103579669 B CN103579669 B CN 103579669B
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- CN
- China
- Prior art keywords
- pole
- battery
- electrical core
- coiling body
- core coiling
- 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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Classifications
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
-
- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
-
- 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
- H01M50/543—Terminals
-
- 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 kind of high-capacity cylindrical lithium ion cell, comprise the battery electrode column on shell, setting electrical core coiling body, the end cover for battery cells being arranged on electrical core coiling body two ends and end cover for battery cells in the enclosure, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and described Positive Poles or anode end cap side corresponding with collector pole are provided with one or more sleeve joint hole or are socketed groove.The present invention is simple to operate, simplifies the assembling process of electrical core coiling body and end cap and housing, and simultaneously collector pole and the Positive Poles of battery or the conduction distance of negative pole pole shorten, and decrease the internal resistance of battery, decrease the heating of battery when discharge and recharge.
Description
Technical field
The present invention relates to the technical field of chemical power that new forms of energy are relevant with storage station, in particular for wind energy and the energy storage of solar energy and the high-capacity cylindrical of power or rectangular lithium ion battery.
Background technology
At present, along with wind energy, the fast development of solar energy, its electric energy produced is due to stable not, easily electrical network is produced and impact, therefore corresponding storage station is set up imperative, therefore need high capacity lithium ion battery that reliability is high for accumulation of energy, to store wind energy, the electricity that sun the subject of knowledge and the object of knowledge produces, storage station is very high to the requirement of battery, such as high reliability and long life (more than 10 years) etc., high-capacity cylindrical lithium ion cell has high-energy-density (≤130wh/kg), the advantages such as manufacturing process is simple.
But technically, high-capacity cylindrical lithium ion cell is due to capacity large (>30Ah ampere-hour), pole piece is long, not too be applicable to the method manufacture with common low capacity column lithium ion battery, gap coating is adopted when the positive/negative plate of existing common low capacity column lithium ion battery manufactures, the object of gap coating is to weld strip lug (nickel or aluminium or copper material), if high-capacity cylindrical lithium ion cell also adopts gap to be coated with, then pole piece roll-in hourly velocity is slow, the strip lug number of required welding is many, the welding job amount at strip lug and coating clearance place is large, and need insulating tape be pasted, complex process, efficiency is low, capacity density is also lowered thus.Therefore high-capacity cylindrical lithium ion cell pole piece is not suitable for adopting gap coating, but paper tinsel shape collector on pole piece left or right limit reserves uncoated district, form lug position end face after uncoated paper tinsel shape collector winding, the uncoated paper tinsel body effect of lug position end face is that electric current draws (output).
Prior art is as CN 102683634 A, 201210122201.X in the end face paper tinsel body shaping of electrical core coiling body lug position after, be welded on current collecting plates, all completed by laser-beam welding machine by tab welding to output pole at present this type of welding of battery again, cost is higher, need to turn connection by lug, welding times is many, and cost is high.
Prior art is as CN 102683634 A, battery case in 201210122201.X adopts circular aluminum pipe to add, and end cap and pole complete the manufacture of whole shell by welding or mechanical seal, aluminum pipe and end cap adopt High Power Laser Welding machine to weld together to reach hermetically sealed effect, as shown in the figure, end cap and pole adopt the fluorine-containing sealing rings such as PFA to complete encapsulation, its complex structure, and the cost making end cap and sealing ring is high, sealing effectiveness is also difficult to reach high yield requirement.
Fix with by the mode of bolt and nut between the brace that prior art Positive Poles and electric current export, although adopt the mode of Anti-slip nut, but under high/low temperature alternation and vibration environment, bolt and nut still can loosen the meeting sparking when there being electric current to export, if but Positive Poles or use laser welding mode between end cap and brace, because solder joint is little, the intensity of aluminium solder joint own is low, then easily disconnect at solder joint place under vibration environment.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides the simple column lithium ion battery of a kind of structure or rectangular lithium ion battery.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of high-capacity cylindrical lithium ion cell, comprise the battery electrode column on shell, setting electrical core coiling body, the end cover for battery cells being arranged on electrical core coiling body two ends and end cover for battery cells in the enclosure, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and described Positive Poles or anode end cap side corresponding with collector pole are provided with one or more sleeve joint hole or are socketed groove.
Wherein, the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles one, side corresponding with collector pole sleeve joint hole or be socketed groove.
Wherein, described shell and end cover for battery cells and battery electrode column is once extruded by aluminium or forging type is one-body molded.
Wherein, lug position, the plus or minus pole end face of described electrical core coiling body interfixes by welding with the shell of battery.
Wherein, the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery are connected and fixed by ultrasonic.
Wherein, the end cap of the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery is coupled to each other fixing by laser welding.
Wherein, the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery are by rivet or interference fit interfixes.
In order to realize foregoing invention object, another technical scheme that the present invention adopts is:
A kind of high-capacity square lithium ion battery, comprise shell, setting electrical core coiling body, the end cover for battery cells being arranged on electrical core coiling body two ends and battery electrode column in the enclosure, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and described Positive Poles or anode end cap side corresponding with collector pole are provided with one or individual above sleeve joint hole or are socketed groove.
Wherein, the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles one, side corresponding with collector pole sleeve joint hole or be socketed groove.
Beneficial effect of the present invention, Positive Poles or anode end cap side corresponding with collector pole are provided with one or individual above sleeve joint hole or are socketed groove, collector pole and sleeve joint hole or be socketed groove fit and be hermetically laser welded together, be conducive to the enforcement of laser welding, its operating surface is simple, simplify the assembling process of electrical core coiling body and end cap and housing, simultaneously collector pole and the Positive Poles of battery or the conduction distance of negative pole pole shorten, decrease the internal resistance of battery, decrease the heating of battery when discharge and recharge.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-capacity cylindrical lithium ion cell;
Fig. 2 is the structural representation of battery current output connecting structure in the embodiment of the present invention;
Fig. 3 is current collecting plates and shell ultra-sonic welded schematic diagram in the embodiment of the present invention;
Fig. 4 is current collecting plates and shell mechanical presses (riveted joint) schematic diagram in the embodiment of the present invention;
Fig. 5 is current collecting plates and shell interference fit schematic diagram in the embodiment of the present invention;
Fig. 6 is current collecting plates and shell machinery (slot rolling) schematic diagram in the embodiment of the present invention;
Fig. 7 is that in the embodiment of the present invention, current collecting plates and shell tapered pole bellmouth laser welding fix schematic diagram.
Label declaration:
1, shell; 2, electrical core coiling body; 21, lug position end face; 22, collector pole; 31, anode end cap; 32, negative pole end cap; 41, Positive Poles; 42, negative pole pole; 5, brace.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
See also Fig. 1, as shown in the figure, high-capacity cylindrical of the present invention or rectangular lithium ion battery, comprise shell 1, be arranged on the electrical core coiling body 2 in shell 1, be arranged on the battery electrode column on the end cover for battery cells at electrical core coiling body 2 two ends and end cover for battery cells, described battery electrode column comprises Positive Poles 41 and negative pole pole 42, described end cover for battery cells comprises anode end cap 31 and negative pole end cap 32, the positive pole ear position end face 21 of described electrical core coiling body 2 is provided with one or more collector pole 22, described Positive Poles 41 or anode end cap 31 side corresponding with collector pole 22 are provided with one or more sleeve joint hole or are socketed groove.The collector pole 22 of lug position end face 21 inserts sleeve joint hole or socket groove on Positive Poles 41 or anode end cap 31, is then welded and fixed with the seam exposed of laser by collector pole 22 and the sleeve joint hole in Positive Poles 41 or anode end cap 31 or the contact-making surface that is socketed groove.
In the present embodiment, adopt aluminium once to extrude stretching the shell 1 of battery and end cover for battery cells and battery electrode column or forging type one-body molded, make it into and be integrated, decrease the laser welding between shell 1 and end cap or mechanical seal operation, thus avoid welding or the leakage that causes of poor sealing, manufacture efficiency thus and be also improved.
When lug position of the present invention end face 21 is due to positive/negative plate and membrane winding, the end face of the limit formation of the Copper Foil of the non-coating portion of negative pole or the aluminium foil of the non-coating of positive pole, in fact be equal to the columniform bottom surface of electrical core coiling body 2, lug position, the plus or minus pole end face 21 of the electrical core coiling body 2 of lithium ion battery is directly welded with the shell 1 of battery, this welding procedure can be laser welding also can be ultra-sonic welded, as shown in Figure 3, decrease electrical core coiling body 2 by being directly welded and fixed and connecting operation with turning of flow collection sheet or lug between pole, improve manufacture efficiency, decrease the internal resistance of battery, improve the discharging efficiency of battery, for lug position, the plus or minus pole end face realizing the electrical core coiling body 2 of lithium ion battery directly welds with the shell of battery, have employed and the higher-order of oscillation is carried out to the paper tinsel body of lug position end face 21, and apply pressure, the paper tinsel body of the lug position end face of higher-order of oscillation moment is by softening, the paper tinsel body of the lug position end face 21 of described electrical core coiling body 2 both positive and negative polarity is compressed respectively and reduces 0.1-6.5 millimeter, the paper tinsel body of lug position end face 21 tangles mutually.
The present invention solves easily to loosen between brace that Positive Poles and electric current export to disconnect problem with solder joint place, as shown in Figure 2, described battery electrode column comprises Positive Poles 41 and negative pole pole 42, described end cover for battery cells comprises anode end cap 31 and negative pole end cap 32, with riveting between the brace 5 that Positive Poles 41 and electric current are exported, and the syndeton simultaneously new electric current that brace 5 and end cap or pole weld together exported by laser welding mode and method.
In the present embodiment, lug position, the plus or minus pole end face 21 of the electrical core coiling body 2 of high-capacity cylindrical of the present invention or rectangular lithium ion battery is not fix by welding with the shell 1 of battery, but is fixed by riveting method or interference fit.The mode of described riveting method and mechanical presses, as shown in Figure 4; Described interference fit is owing to leaning on the outer through larger than the internal diameter of aluminum hull (aluminum pipe) 12 (120 microns) of current collecting plates, make it expand to shell heating, make it shrink to current collecting plates liquid nitrogen cooling, then current collecting plates and coiling body are loaded aluminum hull, interference fit can be realized, as shown in Figure 5.Two kinds of fixed forms between described current collecting plates and shell, Yi Zhongwei: at shell in garden Zhou Shangyong machinery slot rolling mode, slot rolling on shell, current collecting plates extrudes by the interior recess after slot rolling, and making it has good contact with end cap, as shown in Figure 6.Another kind is: on current collecting plates, make a taper pillar, end cap makes bellmouth, and the tapered pole of current collecting plates coordinates fixing with the bellmouth on end cap, then fixes by laser welded seal, as shown in Figure 7.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a high-capacity cylindrical lithium ion cell, it is characterized in that: comprise shell, electrical core coiling body is in the enclosure set, be arranged on the battery electrode column on the end cover for battery cells at electrical core coiling body two ends and end cover for battery cells, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, described Positive Poles is provided with one or more sleeve joint hole with anode end cap side corresponding with collector pole or is socketed groove.
2. high-capacity cylindrical lithium ion cell according to claim 1, it is characterized in that: the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles side corresponding with collector pole is provided with a sleeve joint hole or is socketed groove.
3. high-capacity cylindrical lithium ion cell according to claim 1, is characterized in that: described shell and end cover for battery cells and battery electrode column is once extruded by aluminium or forging type is one-body molded.
4. high-capacity cylindrical lithium ion cell according to claim 3, is characterized in that: lug position, the plus or minus pole end face of described electrical core coiling body interfixes by welding with the shell of battery.
5. high-capacity cylindrical lithium ion cell according to claim 4, is characterized in that: the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery are connected and fixed by ultrasonic.
6. high-capacity cylindrical lithium ion cell according to claim 4, is characterized in that: the end cap of the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery is coupled to each other fixing by laser welding.
7. high-capacity cylindrical lithium ion cell according to claim 3, is characterized in that: the plus or minus pole lug position end face of described electrical core coiling body and the shell of battery are by rivet or interference fit interfixes.
8. a high-capacity square lithium ion battery, it is characterized in that: comprise shell, setting electrical core coiling body, the end cover for battery cells being arranged on electrical core coiling body two ends and battery electrode column in the enclosure, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and described Positive Poles is provided with one or more sleeve joint hole with anode end cap side corresponding with collector pole or is socketed groove.
9. high-capacity square lithium ion battery according to claim 8, it is characterized in that: the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles side corresponding with collector pole is provided with a sleeve joint hole or is socketed groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598505.8A CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598505.8A CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103579669A CN103579669A (en) | 2014-02-12 |
| CN103579669B true CN103579669B (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310598505.8A Expired - Fee Related CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428088A (en) * | 2015-12-18 | 2016-03-23 | 天津力神电池股份有限公司 | Supercapacitor |
| CN107482156B (en) * | 2017-08-29 | 2020-11-06 | 江苏英能新能源科技有限公司 | Large single lithium ion battery |
| CN112582755A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Battery module |
| CN113991186B (en) * | 2021-10-29 | 2023-10-27 | 蜂巢能源科技(无锡)有限公司 | Battery assembly method and lithium battery |
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| CN101188311A (en) * | 2007-09-30 | 2008-05-28 | 广州市鹏辉电池有限公司 | A novel lithium Fe battery and its making technology |
| CN101841059A (en) * | 2010-01-19 | 2010-09-22 | 徐敖奎 | High-power lithium ion battery |
| CN102549810A (en) * | 2009-12-25 | 2012-07-04 | 丰田自动车株式会社 | Battery |
| CN102683634A (en) * | 2012-04-24 | 2012-09-19 | 张贵萍 | High-capacity cylindrical lithium ion cell and production method thereof |
| CN203589162U (en) * | 2013-11-22 | 2014-05-07 | 江苏风迅新能源科技有限公司 | High-capacity cylindrical or square lithium ion battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007324015A (en) * | 2006-06-02 | 2007-12-13 | Matsushita Electric Ind Co Ltd | Secondary battery and its manufacturing method |
| JP2011159518A (en) * | 2010-02-02 | 2011-08-18 | Toyota Motor Corp | Battery and method of manufacturing battery |
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2013
- 2013-11-22 CN CN201310598505.8A patent/CN103579669B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188311A (en) * | 2007-09-30 | 2008-05-28 | 广州市鹏辉电池有限公司 | A novel lithium Fe battery and its making technology |
| CN102549810A (en) * | 2009-12-25 | 2012-07-04 | 丰田自动车株式会社 | Battery |
| CN101841059A (en) * | 2010-01-19 | 2010-09-22 | 徐敖奎 | High-power lithium ion battery |
| CN102683634A (en) * | 2012-04-24 | 2012-09-19 | 张贵萍 | High-capacity cylindrical lithium ion cell and production method thereof |
| CN203589162U (en) * | 2013-11-22 | 2014-05-07 | 江苏风迅新能源科技有限公司 | High-capacity cylindrical or square lithium ion battery |
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| CN103579669A (en) | 2014-02-12 |
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